CN104554689A - Method for supplying natural gas to wharf boat - Google Patents
Method for supplying natural gas to wharf boat Download PDFInfo
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- CN104554689A CN104554689A CN201510055324.XA CN201510055324A CN104554689A CN 104554689 A CN104554689 A CN 104554689A CN 201510055324 A CN201510055324 A CN 201510055324A CN 104554689 A CN104554689 A CN 104554689A
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- landing stage
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Abstract
The invention relates to a method for supplying natural gas to a wharf boat. The method comprises the steps of determining the maximum water level on the surface of a river and the farthest drifting distance from the wharf boat to a river bank in a flood season, mounting a pressure-regulating measuring cabinet at a site, higher than the maximum water level, of the river bank, regulating medium-pressure gas to be low-pressure fuel gas required by the wharf boat, and supplying fuel gas to the wharf boat through a fuel gas control device and a special metal gas supply flexible tube for the wharf boat. The special metal gas supply flexible tube for the wharf boat has the advantages that a tube body can be tightly combined, and the special metal gas supply flexible tube is flexible to use and low in pressure deformation and has circumnutation resistance, so that the problem that a common conveying steel tube cannot be bent is solved, and meanwhile, the disadvantages that a traditional conveying flexible tube is insufficient in gas supply quantity and poor in pressure resistance are overcome. Besides, urgent disconnecting devices are respectively mounted at two ends of the special metal gas supply flexible tube for the wharf boat, so that valves can be rapidly closed by the urgent disconnecting device no matter which end of the special metal gas supply flexible tube for the wharf boat is accidentally snapped in the flood season or when the wharf boat is impacted, and the safety loopholes such as fire disaster and explosion caused by the leakage of natural gas can be prevented.
Description
Technical field
The present invention relates to natural gas supply method, particularly relate to a kind of method to landing stage supply natural fuels.
Background technology
Landing stage is the rectangle flat-bottomed boat of unpowered device, is usually fixed on bank, only uses as floating landing stage at first, for handling goods or upper and lower for pedestrian, after along with the development in epoch, the raising of people's quality of the life, more and more makes earnest efforts amusement on water gradually.Based on so, landing stage is also used as the use such as business, amusement.
At present, most landing stage is all provided with the restaurant for people's food and drink.Because landing stage swims on rivers, if directly connect natural gas line from land for the gas supply in kitchen, restaurant on landing stage, existing problem is, natural gas line generally adopts steel pipe, to ensure the air-tightness of body, rigidity and impregnability, thus avoid gases did escape phenomenon.If but running into flood season, river surface raises, and landing stage is just subjected to displacement change thereupon, and because steel pipe quality is hard, the ground that natural gas line is connected with landing stage is convenient crack can occur, thus causes the problem of Leakage Gas.And if adopt flexible pipe transport gas body, because caliber is little, tube wall is thin, the pressure of combustion gas in pipe cannot be born, and the gas consumption on landing stage can not be met.
So the general autogas that adopts carries out air feed at present, but it is far from being enough that the autogas for a tank net weight 13kg will meet nearly 2,000 people diet consumption amount all day, so need when in use ceaselessly to change Gas Pipe, problem existing for this mode is, if be in the cooking stage when dying, the mouthfeel of vegetable can be affected, thus affect the sales volume of businessman; And belong to explosive material due to autogas, not easily collectd and be placed on landing stage, carried a few tank autogas on landing stage so need artificial every day, again liquid gas storage tank is moved down ship after being finished and go to change, this mode complex operation and labor intensive.The calorific value that can produce after the liquefied petroleum gas combustion of one tank net weight 13kg, only with 16m
3the calorific value produced after combustion of natural gas is suitable.One tank autogas price is generally at about 90 yuan, and natural fuels is by Chongqing region business gas price lattice 2.96 yuan/m
3calculate, 16m
3gas Prices only needs about 50 yuan.So from price, the cost of autogas is far away higher than gasification gas cost.So based on above shortcoming, what operation commercial city, each landing stage was urgent wants to find a kind of method supplying natural fuels directly to landing stage.
Summary of the invention
The object of this invention is to provide a kind of method to landing stage supply natural fuels, cannot to the problem of supply gas natural fuels on landing stage in prior art to solve.
In order to solve the problems of the technologies described above, the invention provides a kind of method to landing stage supply natural fuels, the step of described method includes:
Step 1: the maximum distance L rice on drift offshore limit, landing stage during setting river surface flood season;
Step 2: setting river surface highest water level in flood season H rice;
Step 3: higher than water level (H+ H
1) rice river bank on bury middle pressure steel gas pipe underground underground, and combustion gas input end interface that is reserved and gas pressure adjusting metering cabinet, wherein H
1>=20 meters, the design pressure of middle pressure steel gas pipe underground is 0.4MPa;
Step 4: the pre-buried low pressure steel gas pipe underground to landing stage air feed on river bank, and interface that is reserved and pressure adjusting metering cabinet combustion gas mouth, the design pressure of its mesolow steel gas pipe underground is 10KPa;
Step 5: higher than water level (H+ H
1) rice river bank on pressure adjusting metering cabinet is installed, and setting pressure adjusting metering cabinet, to export the delivery pressure of combustion gas to low-pressure line be 2.2KPa-2.8KPa;
Step 6: the spare interface of the combustion gas input end of pressure adjusting metering cabinet with middle pressure steel gas pipe underground is communicated with, and the combustion gas mouth of pressure adjusting metering cabinet is communicated with the spare interface of low pressure steel gas pipe underground;
Step 7: install controller for gas in the gas transmission terminal of low pressure steel gas pipe underground, be reserved with landing stage air supply opening in described controller for gas, setting controller for gas is T rice apart from the distance on water bank;
Step 8: one end landing stage special-purpose metal air supply hose being provided with emergency separating device is arranged on the landing stage air supply opening described in step 7, wherein the resistance to pressure pressure of landing stage special-purpose metal air supply hose is 8MPa, operating temperature is-30 DEG C to 100 DEG C, its length is greater than (T+L) rice, and the diameter of landing stage special-purpose metal air supply hose is 50mm to 200mm;
Step 9: according to national standard CJJ94-2009 on landing stage, combustion gas steam line and various security system in design and installation ship, and reserved communicate with landing stage special-purpose metal air supply hose connect gas port;
Step 10: what the hose coupling of the landing stage special-purpose metal air supply hose other end is arranged on the reserved landing stage special-purpose metal air supply hose of step 9 communicates connects on gas port;
Step 11: open the steam supply valve of pressure adjusting metering cabinet and the control cock of controller for gas, can realize to landing stage air feed object.
Adopt technique scheme, by by from press dry line natural gas via pressure adjusting metering cabinet carry out pressure regulation after obtain natural fuels needed for landing stage.Natural fuels after pressure regulation is input in low pressure steel gas pipe underground.Low pressure steel gas pipe underground be connected by landing stage special-purpose metal air supply hose between landing stage, and landing stage special-purpose metal air supply hose has body and combines closely, uses softness, is out of shape the advantage of little, resistance to circumnutating property and fatigue durability under stress.So landing stage special-purpose metal air supply hose overcomes the not bent property of common conveying steel pipe, overcome the shortcoming that traditional delivery hose air demand is not enough, pressure resistance is bad simultaneously.By using landing stage special-purpose metal air supply hose to the connection of natural fuels in landing stage and control system, the LPG cyoinders (the additional 13kg fuel cartridge of autogas of net weight 13kg) just without the need to carrying the 26kg that weighs again enters landing stage, decreases human cost.Analyze from price on the other hand, because pipe natural gas price is well below autogas, so the cost that this method will reduce greatly to landing stage supply natural fuels.
Further, the structure of the landing stage special-purpose metal air supply hose described in step 8, step 9, step 10 is as follows: it comprises metallic hose body, metallic hose body two ends are provided with hose coupling, the two ends of described metallic hose are embedded in hose coupling respectively, wherein the hose coupling of one end has emergency separating device by Flange joint, and described emergency separating device is tightly connected by the landing stage air supply opening described in flange and step 7; The hose coupling of the other end is tightly connected by the gas port that connects described in flange and step 9.There is flange at emergency separating device two ends, landing stage special-purpose metal air supply hose and steam line conducting is realized by flange, artificial dismounting can be realized, special-purpose metal air supply hose two ends, landing stage embed hose coupling respectively, this avoid coming off of hose coupling, emergency separating device can when emergency case occurs, emergency separating device is forced to disconnect, two parts emergency separating device disconnected can realize the sealing of respective pipeline, prevent the leakage of natural fuels, owing to adopting landing stage special-purpose metal air supply hose as steam line, landing stage special-purpose metal air supply hose has elasticity, landing stage normal displacement on the water surface can be adapted to.
Further, for avoiding middle pressure steel gas pipe underground and low pressure steel gas pipe underground to be damaged, when pressing steel gas pipe underground in step 3 and step 4 and low pressure steel gas pipe underground is embedded in below traffic way, laying depth is 0.9m, when being embedded in below non-traffic way, laying depth is 0.6m.
Further, in order to support landing stage special-purpose metal air supply hose, avoiding it to be immersed in river, to extend its service life, between landing stage and river bank, a landing stage special-purpose metal air supply hose pontoon being set at interval of 1 meter.
Further, in order to prevent controller for gas by Exposure to Sunlight, drench with rain, controller for gas of the present invention is also provided with combustion gas control housing cover, the structure of described combustion gas control housing cover is as follows: it comprises cabinet and is arranged at the mounting base below cabinet, and cabinet is threaded connection on mounting base; Described cabinet front and rear wall is provided with the through hole matched with controller for gas supply air line, described mounting base is provided with controller for gas supply air line positioning chamber with through hole opposite position place, be provided with the i shaped steel with supply air line form fit in described positioning chamber, described i shaped steel is threaded connection on mounting base.So, ensure that the stable of controller for gas on the one hand, avoid the pollution to rivers on the other hand.
Further, in order to avoid thunder and lightning is to the destruction of pressure adjusting metering cabinet, and electrostatic is on its impact, in steps of 5, installs lightning protection device cashier's office in a shop at pressure regulation metering, anti static grounding measure, and its grounding resistance is less than 10
.
Further, described landing stage special-purpose metal air supply hose is enclosed with antiultraviolet material, to avoid ultraviolet, corrosion phenomenon is caused to landing stage special-purpose metal air supply hose.
Detailed description of the invention
The technical program provides a kind of method to landing stage supply natural fuels, and the step of described method includes:
Step 1: the maximum distance supposing drift offshore limit, landing stage during river surface flood season is 50 meters;
Step 2: suppose to measure river surface highest water level in flood season 180 meters;
Step 3: the river bank so higher than water level 200 meters of is buried middle pressure steel gas pipe underground underground, and interface that is reserved and gas pressure adjusting metering cabinet, the design pressure of middle pressure steel gas pipe underground is 0.4MPa;
Step 4 is the pre-buried low pressure steel gas pipe underground to landing stage air feed on river bank, and interface that is reserved and pressure adjusting metering cabinet, the design pressure of its mesolow steel gas pipe underground is 10KPa;
When pressing steel gas pipe underground in handle and low pressure steel gas pipe underground is embedded in below traffic way, its laying depth is 0.9m, and when being embedded in below non-traffic way, laying depth is 0.6m.When middle pressure steel gas pipe underground and low pressure steel gas pipe underground pass in drain hose, thermal pipe and other various uses grooves, should be laid in sleeve pipe by middle pressure steel gas pipe underground and low pressure steel gas pipe underground, sleeve pipe stretches out the net level length that component beyond the region of objective existence wall should not be less than 6.3.3-1 gas pipeline and construction in specification GB50028-2006.Sleeve pipe two ends should adopt flexible corrosion protection, waterproof material to seal.
To be embedded in ground press steel gas pipe underground and low pressure steel gas pipe underground to carry out soldered time, must 100% radiographic examination (complete) and supersonic test be carried out.Radiographic examination (complete) must not lower than grade requirements for quality of II in existing national standards GB-T 12605; Supersonic test must not lower than grade requirements for quality of I in existing national standards GB 11345.
Step 5: install pressure adjusting metering cabinet on the river bank higher than water level 200 meters of, and the delivery pressure to low-pressure line output combustion gas setting pressure adjusting metering cabinet is 2.5KPa; This pressure adjusting metering cabinet has " Changzhou letter power ", and producer makes finished product separately, and its model is RB4700 series, during installation, install lightning protection device, anti static grounding measure cashier's office in a shop, and its grounding resistance is less than 10 at pressure regulation metering
.
Step 6: the spare interface of the combustion gas input end of pressure adjusting metering cabinet with middle pressure steel gas pipe underground is communicated with, and the combustion gas mouth of pressure adjusting metering cabinet is communicated with the spare interface of low pressure steel gas pipe underground;
Step 7: install controller for gas in the gas transmission terminal of low pressure steel gas pipe underground, be reserved with landing stage air supply opening in described controller for gas, the distance measuring controller for gas distance water bank is 20 meters; Preferably, in order to avoid the time in flood season, under the impact of river, controller for gas is washed from initial position and enters in the body of river, described controller for gas arranges combustion gas control housing cover, described combustion gas control housing cover comprises cabinet and is arranged at the mounting base below cabinet, and cabinet is threaded connection on mounting base; Described cabinet front and rear wall is provided with the through hole matched with controller for gas supply air line, mounting base is provided with controller for gas supply air line positioning chamber with through hole opposite position place, be provided with the i shaped steel with supply air line form fit in described positioning chamber, described i shaped steel is threaded connection on mounting base.
Step 8: special-purpose metal air supply hose one end, landing stage is arranged on the landing stage air supply opening described in step 7, wherein the resistance to pressure pressure of landing stage special-purpose metal air supply hose is 8MPa, operating temperature is-30 DEG C to 100 DEG C, and its length is greater than 70 meters, and the diameter of landing stage special-purpose metal air supply hose is 100mm.In order to support landing stage special-purpose metal air supply hose, avoiding it to be immersed in river, to extend its service life, between landing stage and river bank, a landing stage special-purpose metal air supply hose pontoon being set at interval of 1 meter.Caliber due to landing stage special-purpose metal air supply hose its flexibility larger is poorer, so the flexibility in order to meet landing stage special-purpose metal air supply hose, thus make it can change with the fluctuating of river surface, the demand of landing stage to natural fuels will be met simultaneously, so employing at least two internal diameters are the landing stage special-purpose metal air supply hose of 100mm, be arranged on respectively in the control cock on controller for gas.Landing stage its operation pressure of special-purpose metal air supply hose of this internal diameter is 8Mpa, and bursting pressure is 12Mpa, and minimum bending radius is 630mm.
Generally, two internal diameters are that the landing stage special-purpose metal air supply hose of 100mm carries out air feed to landing stage and met the demand of landing stage to combustion gas, but in order to meet demand increasing to combustion gas after landing stage expansion scale, so arrange 3 blowing mouths and be communicated with landing stage special-purpose metal air supply hose.
The structure of landing stage special-purpose metal air supply hose is as follows: it comprises metallic hose body, metallic hose body two ends are provided with hose coupling, the two ends of described metallic hose are embedded in hose coupling respectively, wherein the hose coupling of one end has emergency separating device by Flange joint, and described emergency separating device is tightly connected by the landing stage air supply opening described in flange and step 7; The hose coupling of the other end is tightly connected by the gas port that connects described in flange and step 9.Emergency separating device can when emergency case occurs, emergency separating device is forced to disconnect, two parts emergency separating device disconnected can realize the sealing of respective pipeline, prevent the leakage of natural fuels, at the steam line adopting landing stage special-purpose metal air supply hose as gas station and landing stage, landing stage special-purpose metal air supply hose has elasticity, can adapt to landing stage normal displacement on the water surface.
Step 9: according to national standard CJJ94-2009 on landing stage, combustion gas steam line and various security system in design and installation ship, and reserved communicate with landing stage special-purpose metal air supply hose connect gas port;
Step 10: what the landing stage special-purpose metal air supply hose other end is arranged on the reserved landing stage special-purpose metal air supply hose of step 9 communicates connects on gas port;
Step 11: open the steam supply valve of pressure adjusting metering cabinet and the control cock of controller for gas, can realize to landing stage air feed object.
Originally stating in technical scheme, by measuring the highest water level of river surface in flood season, pressure adjusting metering cabinet being arranged on the river bank place higher than highest water level, to ensure that pressure adjusting metering cabinet is not inundated with flood.Recycling pressure adjusting metering cabinet by the low-pressure fuel gas of middle pressure gas pressure regulating needed for landing stage, by controller for gas and landing stage special-purpose metal air supply hose by fuel gas transmission on landing stage.By measure landing stage when flood season drift from maximum distance, first choose the length of landing stage special-purpose metal air supply hose, be pulled off to avoid the landing stage special-purpose metal air supply hose when flood season.In addition, the junction of controller for gas and landing stage and landing stage special-purpose metal air supply hose installs an emergency separating device respectively, even if landing stage special-purpose metal air supply hose is by after unexpected breaking, emergency separating device just automatic fast speed closure valve, thus prevent the potential safety hazard such as fire, blast that causes because of natural gas leaking.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (7)
1., to a method for landing stage supply natural fuels, it is characterized in that, the step of described method includes:
Step 1: the maximum distance L rice on drift offshore limit, landing stage during setting river surface flood season;
Step 2: setting river surface highest water level in flood season H rice;
Step 3: higher than water level (H+ H
1) rice river bank on bury middle pressure steel gas pipe underground underground, and combustion gas input end interface that is reserved and gas pressure adjusting metering cabinet, wherein H
1>=20 meters, the design pressure of middle pressure steel gas pipe underground is 0.4MPa;
Step 4: the pre-buried low pressure steel gas pipe underground to landing stage air feed on river bank, and interface that is reserved and pressure adjusting metering cabinet combustion gas mouth, the design pressure of its mesolow steel gas pipe underground is 10KPa;
Step 5: higher than water level (H+ H
1) rice river bank on pressure adjusting metering cabinet is installed, and setting pressure adjusting metering cabinet, to export the delivery pressure of combustion gas to low-pressure line be 2.2KPa-2.8KPa;
Step 6: the spare interface of the combustion gas input end of pressure adjusting metering cabinet with middle pressure steel gas pipe underground is communicated with, and the combustion gas mouth of pressure adjusting metering cabinet is communicated with the spare interface of low pressure steel gas pipe underground;
Step 7: install controller for gas in the gas transmission terminal of low pressure steel gas pipe underground, be reserved with landing stage air supply opening in described controller for gas, setting controller for gas is T rice apart from the distance on water bank;
Step 8: one end landing stage special-purpose metal air supply hose being provided with emergency separating device is arranged on the landing stage air supply opening described in step 7, wherein the resistance to pressure pressure of landing stage special-purpose metal air supply hose is 8MPa, operating temperature is-30 DEG C to 100 DEG C, its length is greater than (T+L) rice, and the diameter of landing stage special-purpose metal air supply hose is 50mm to 200mm;
Step 9: according to national standard CJJ94-2009 on landing stage, combustion gas steam line and various security system in design and installation ship, and reserved communicate with landing stage special-purpose metal air supply hose connect gas port;
Step 10: what the hose coupling of the landing stage special-purpose metal air supply hose other end is arranged on the reserved landing stage special-purpose metal air supply hose of step 9 communicates connects on gas port;
Step 11: open the steam supply valve of pressure adjusting metering cabinet and the control cock of controller for gas, can realize to landing stage air feed object.
2. the method to landing stage supply natural fuels according to claim 1, it is characterized in that: the structure of the landing stage special-purpose metal air supply hose described in step 8, step 9, step 10 is as follows: it comprises metallic hose body, metallic hose body two ends are provided with hose coupling, the two ends of described metallic hose are embedded in hose coupling respectively, wherein the hose coupling of one end has emergency separating device by Flange joint, and described emergency separating device is tightly connected by the landing stage air supply opening described in flange and step 7; The hose coupling of the other end is tightly connected by the gas port that connects described in flange and step 9.
3. the method to landing stage supply natural fuels according to claim 1, it is characterized in that, when pressing steel gas pipe underground in step 3 and step 4 and low pressure steel gas pipe underground is embedded in below traffic way, laying depth is 0.9m, when being embedded in below non-traffic way, laying depth is 0.6m.
4. the method to landing stage supply natural fuels according to claim 1, it is characterized in that, step 10 also comprises: between landing stage and river bank, arrange a landing stage special-purpose metal air supply hose pontoon at interval of 1 meter.
5. the method to landing stage supply natural fuels according to claim 1, it is characterized in that, also comprise in step 7: combustion gas control housing cover is set on described controller for gas, the structure of described combustion gas control housing cover is as follows: it comprises cabinet and is arranged at the mounting base below cabinet, and cabinet is threaded connection on mounting base; Described cabinet front and rear wall is provided with the through hole matched with controller for gas supply air line, described mounting base is provided with controller for gas supply air line positioning chamber with through hole opposite position place, be provided with the i shaped steel with supply air line form fit in described positioning chamber, described i shaped steel is threaded connection on mounting base.
6. the method to landing stage supply natural fuels according to claim 1, it is characterized in that, install lightning protection device cashier's office in a shop at pressure regulation metering, anti static grounding measure, and its grounding resistance is less than 10
.
7. the method to landing stage supply natural fuels according to claim 1, is characterized in that, described landing stage special-purpose metal air supply hose is enclosed with antiultraviolet material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055324.XA CN104554689B (en) | 2015-02-03 | 2015-02-03 | A kind of method to landing stage supply natural gas |
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|---|---|---|---|
| CN201510055324.XA CN104554689B (en) | 2015-02-03 | 2015-02-03 | A kind of method to landing stage supply natural gas |
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| CN104554689A true CN104554689A (en) | 2015-04-29 |
| CN104554689B CN104554689B (en) | 2016-09-28 |
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| CN102458977A (en) * | 2009-04-30 | 2012-05-16 | 机械工程欧洲公司 | Arrangement for transferring a fluid to a ship and system for transferring fluid between two ships, one of which is provided with the arrangement of the invention |
| CN103608259A (en) * | 2011-04-11 | 2014-02-26 | Fmc技术股份有限公司 | Offshore fluid transfer system and method |
| CN103987621A (en) * | 2011-05-06 | 2014-08-13 | 国民油井华高丹麦公司 | Offshore system |
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2015
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080110091A1 (en) * | 2000-12-14 | 2008-05-15 | Small Ventures Usa Llc | Method and apparatus for delivering natural gas to remote locations |
| GB2399320A (en) * | 2003-03-10 | 2004-09-15 | Malcolm Newell | Semi-submersible jetty for transferring LNG from a production vessel to a transport vessel |
| CN101500887A (en) * | 2006-06-19 | 2009-08-05 | 泰克尼普法国公司 | System for transferring a fluid to a ship |
| CN201014196Y (en) * | 2007-03-05 | 2008-01-30 | 上海燃气工程设计研究有限公司 | Gas supply pipeline for floating refectory above water |
| WO2009044052A2 (en) * | 2007-09-12 | 2009-04-09 | Technip France | Installation for transferring a fluid between a tanker and a fixed structure |
| CN102458977A (en) * | 2009-04-30 | 2012-05-16 | 机械工程欧洲公司 | Arrangement for transferring a fluid to a ship and system for transferring fluid between two ships, one of which is provided with the arrangement of the invention |
| CN103608259A (en) * | 2011-04-11 | 2014-02-26 | Fmc技术股份有限公司 | Offshore fluid transfer system and method |
| CN103987621A (en) * | 2011-05-06 | 2014-08-13 | 国民油井华高丹麦公司 | Offshore system |
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| CN104554689B (en) | 2016-09-28 |
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