CN102535470B - Water jet sprayer assisting offshore platform in sinking pile - Google Patents
Water jet sprayer assisting offshore platform in sinking pile Download PDFInfo
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- CN102535470B CN102535470B CN201210012890.9A CN201210012890A CN102535470B CN 102535470 B CN102535470 B CN 102535470B CN 201210012890 A CN201210012890 A CN 201210012890A CN 102535470 B CN102535470 B CN 102535470B
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Abstract
The invention discloses a water jet sprayer assisting an offshore platform in sinking a pile. The water jet sprayer comprises a barrel body with a water inlet and a water outlet, and a core tube arranged in an inner cavity of the barrel body, wherein a hollow core tube inner cavity is formed in the core tube; a plugging member for selectively plugging the water inlet is arranged on the top of the core tube; an annular baffle plate with a plurality of water holes, a plurality of water channels extending along an axial direction of the core tube, a guide impeller with spiral guide blades and a spiral nozzle which is arranged at the bottom of the core tube and provided with a spiral channel are sequentially arranged on the core tube below the plugging member; and an outer ring nozzle is formed between the outer wall of the spiral nozzle and the inner wall of the water outlet of the barrel body. During pile sinking, the water jet sprayer jets high-pressure water at high speed in the form of combined jet flow to scour a soil body in the pile, so that soil blockage in the pile can be removed effectively, the power pile sinking resistance is reduced, the pile sinking efficiency is improved, and aims of shortening the platform construction period and reducing the construction cost are fulfilled.
Description
Technical field
The high-pressure water jet equipment technical field that the present invention relates to auxiliary power method pile sinking in Pile Foundation of Offshore Platforms construction, relates in particular to the Water jet sprayer that a kind of auxiliary pile sinking breaks ground.
Background technology
Water jet auxiliary pile sinking is that the soil that utilizes water jet to form in to stake in dynamic method pile driving process is filled in row and abolished, thereby reduces penetrating resistance, improves a kind of novel pile sinking technology of pile sinking efficiency.In water jet auxiliary pile sinking system, Water jet sprayer is the generating device of jet, is also the key in system, and the static pressure that its function not only provides high-pressure pump is converted to the dynamic pressure of water, has also determined flow behavior and the power performance of water jet.
At present, high pressure water jet has been widely used in the industrial circles such as cutting, cleaning, fragmentation, de-sludging, rust cleaning and surfacing, according to the difference of its application, form the also difference to some extent of nozzle structure of water jet, be mainly divided into three kinds: (1) forces rotation and self-rotation shower nozzle; (2) internal rotation type shower nozzle; (3) multiinjector fixed sprinkler.For Pile Foundation of Offshore Platforms construction, because pile body diameter is large, pile body is long, require Water jet sprayer to there is larger impact area, and can realize and breaking ground with stake, and the shower nozzle of existing structure all can not meet above-mentioned requirements.Therefore, be necessary to design a kind of Water jet sprayer that is specifically designed to ocean platform water jet auxiliary pile sinking.
Summary of the invention
Technical problem to be solved by this invention is: for the problems referred to above, provide a kind of and have larger impact area, can realize the Water jet sprayer that is applicable to assisting offshore platform in sinking pile breaking ground with stake.
For solving the problems of the technologies described above, technical scheme of the present invention is: Water jet sprayer assisting offshore platform in sinking pile, comprise: cylindrical shell, described cylindrical shell has the cylinder lumen of hollow, the upper end of described cylindrical shell is provided with the water inlet that connects described cylinder lumen, and the lower end of described cylindrical shell is provided with the delivery port that connects described cylinder lumen, be arranged at the core pipe in described cylinder lumen, described core pipe has the core tube cavity of hollow, described Xin Guan top is provided with the closeouts of water inlet described in selectively shutoff, the below that is positioned at described closeouts on described core pipe is provided with the ring baffle vertical with the axis direction of core pipe, on described ring baffle, be provided with a plurality of water holes, be positioned on the tube wall of core pipe of described ring baffle below and be provided with the mistake water flow passage that a plurality of axis directions along core pipe extend, on the outer wall of described core pipe, be positioned at the described below of crossing water flow passage guide vane wheel is installed, on described guide vane wheel, be provided with spiral helicine guide vane, the below of described guide vane wheel is provided with the nozzle of putting english that is arranged on described Xin Guan bottom, on the inwall of the described nozzle of putting english, be provided with the runner of putting english, the described nozzle of putting english is corresponding with the delivery port position of described cylindrical shell, described in put english and form outer shroud nozzle between the outer wall of nozzle and the inwall of the delivery port of described cylindrical shell.
As preferably, described cylindrical shell comprises main cylinder, and the threaded one end of described main cylinder is connected with top connection, and the lower surface of described top connection relies on the upper surface of described ring baffle, the lower contact that has been threaded of the other end of described main cylinder.
As further preferred, described top connection has the top connection inner chamber of hollow, and described top connection inner chamber comprises the first cylindrical section, conical section and the second cylindrical section being connected successively, the water inlet that described the first cylindrical section is described cylindrical shell from top to bottom.
As further preferred, described closeouts comprises non retern valve, the upper end of described non retern valve has the frustum portion suitable with the conical section of described top connection inner chamber, described core tube cavity is inserted from described Xin Guan top in the lower end of described non retern valve, leans the spring being set on described core pipe between described frustum Bu bottom surface and described ring baffle.
As further preferred, described lower contact has the lower contact inner chamber of hollow, and described lower contact inner chamber has the lower contact inner chamber contraction section shrinking gradually from top to bottom.
As further preferably, described Xin Guan bottom is provided with internal thread, described in the put english upper end of nozzle be provided with external screw thread, described Xin Guan bottom with described in the nozzle threads of putting english be connected.
As further preferably, described in the put english inner chamber of nozzle there is the nozzle chamber contraction section shrinking gradually, the below of the runner of putting english described in described nozzle chamber contraction section is positioned at from top to bottom.
As further preferably, on the installation endoporus of described guide vane wheel, be provided with internal spline, on the corresponding site of described core pipe, be provided with external splines, spline joint between described guide vane wheel and described core pipe.
As further preferred, the outer wall of described main cylinder is provided with a plurality of ear shape draw rings that circumferentially arrange along it, on the outer wall of described top connection, by bearing pin, is hinged with drop handle.
As further preferred, on the outer wall corresponding to described top connection inner chamber the first cylindrical section of described top connection, be provided with for the installation portion with outer water tube installation, described installation portion comprises the annular boss that protrudes from described outer wall, and is arranged on the external screw thread on the tube wall of described annular boss top.
Owing to having adopted technique scheme, the invention has the beneficial effects as follows: Water jet sprayer assisting offshore platform in sinking pile of the present invention is when pile sinking operation, water under high pressure is pushed closeouts open from the water inlet of cylindrical shell upper end and is entered cylinder lumen, through descending after the water hole on ring baffle, a plurality of water flow passage of crossing that wherein a part of water under high pressure arranges on core tube wall enter core tube cavity, come downwards to while putting english nozzle, under the guide effect of the runner of putting english, produce eddy flow, and form rotating jet from the nozzle ejection of putting english; When another part water under high pressure in cylinder lumen comes downwards to guide vane wheel, through spiral helicine guide vane, add supination, finally spouting in the form of a ring from outer shroud nozzle, form external-ring jetting-flow; External-ring jetting-flow and rotating jet acting in conjunction form multiple jet flow, act on an interior soil body, in soil body surface, form large-area water jet erosion district, the soil body is carried out to erosion, and with pile sinking, constantly eliminate the soil plug producing in stake, thereby reduce the resistance of power pile sinking, realize smoothly auxiliary pile sinking.
Cylindrical shell wherein adopts the fabricated structure being comprised of main cylinder, top connection and lower contact, makes Water jet sprayer assisting offshore platform in sinking pile of the present invention manufacture simple in structure, easy, cost low.
This Water jet sprayer can effectively be abolished soil plug in stake, reduces the resistance of power pile sinking, improves pile sinking efficiency, solves the problems such as hammer, pile sinking be not in place of refusing that occur in pile driving process, reaches the object that shortens the platform construction cycle, reduces construction cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is the structure sectional view of the embodiment of the present invention;
Fig. 2 is the working state figure while utilizing Water jet sprayer auxiliary pile sinking of the present invention;
In figure: 1-drop handle; 2-top connection; 21-annular boss; 3-the first O-ring seals; 4-bearing pin; 5-non retern valve; 51-frustum portion; 6-spring; 7-water hole; 8-core pipe; 81-ring baffle; 9-crosses water flow passage; 10-main cylinder; 11-guide vane wheel; 111-guide vane; 12-the second O-ring seals; The 13-runner of putting english; 14-lower contact; The 15-nozzle of putting english; 151-nozzle chamber contraction section; 16-lower contact inner chamber contraction section; 161-outer shroud nozzle; 17-bottom ear shape draw ring; 18-core tube cavity; 19-cylinder lumen; 20-top ear shape draw ring; 22-high-pressure rubber pipe; 23-supporting leg stay cord; 24-righting supporting leg; 25-pile body; The 26-soil body; 27-shower nozzle stay cord.
The specific embodiment
As shown in Figure 1, Water jet sprayer assisting offshore platform in sinking pile, comprising: cylindrical shell, and described cylindrical shell has the cylinder lumen 19 of hollow, the upper end of described cylindrical shell is provided with the water inlet that connects described cylinder lumen 19, and the lower end of described cylindrical shell is provided with the delivery port that connects described cylinder lumen 19, be arranged at the core pipe 8 in described cylinder lumen, described core pipe 8 has the core tube cavity 18 of hollow, the top of described core pipe 8 is provided with the non retern valve 5 of water inlet described in selectively shutoff, the below that is positioned at described non retern valve 5 on described core pipe 8 is provided with the ring baffle vertical with the axis direction of core pipe 8 81, on described ring baffle 81, be provided with a plurality of water holes 7, be positioned on the tube wall of core pipe 8 of described ring baffle 81 belows and be provided with the mistake water flow passage 9 that a plurality of axis directions along core pipe 8 extend, in the present embodiment, be provided with four and cross water flow passage 9, top correspondence is provided with two, bottom also correspondence is provided with two, on described core pipe 8, be positioned at the described below of crossing water flow passage 9 guide vane wheel 11 is installed, on described guide vane wheel 11, be provided with spiral guide vane 111, 111 pairs of High-Pressure Waters of flowing through of this guide vane play the effect of putting english, the below of described guide vane wheel 11 is provided with the nozzle 15 of putting english that is arranged on described core pipe 8 bottoms, on the inwall of the described nozzle 15 of putting english, be provided with the runner 13 of putting english, these 13 pairs of High-Pressure Waters of flowing through of runner of putting english also play the effect of putting english, the described nozzle 15 of putting english is corresponding with the delivery port position of described cylindrical shell, described in put english and form outer shroud nozzle 161 between the outer wall of nozzle 15 and the inwall of the delivery port of described cylindrical shell.
Wherein, described cylindrical shell adopts fabricated structure, comprise main cylinder 10, described main cylinder 10 upper end is provided with internal thread, and the lower end of top connection 2 is provided with external screw thread, assembling is between the two threaded, the lower surface of described top connection 2 relies on the upper surface of described ring baffle 81, like this can be to core pipe 8 in axial location, and described main cylinder 10 lower end is provided with internal thread, lower contact 14 upper end is provided with external screw thread, and assembling is between the two threaded.Cylindrical shell adopts fabricated structure, makes Water jet sprayer assisting offshore platform in sinking pile of the present invention manufacture simple in structure, easy, cost low.
Wherein, described top connection 2 has the top connection inner chamber of hollow, and described top connection inner chamber comprises the first cylindrical section, conical section and the second cylindrical section being connected successively from top to bottom, and described the first cylindrical section is as water inlet.
Wherein, the upper end of described non retern valve 5 has the frustum portion 51 suitable with the conical section of described top connection inner chamber, be provided with the first O-ring seals 3 between the two, described core tube cavity 18 is inserted in the lower end of described non retern valve 5 from the top of described core pipe 8, between described frustum Bu51 bottom surface and described ring baffle 81, lean the spring 6 being set on described core pipe 8, described spring 6 is stage clip.Utilize spring 6 that the frustum portion of non retern valve 5 51 is compressed by the first O-ring seals 3 with the conical section of top connection 2 inner chambers.
Wherein, described lower contact 14 has the lower contact inner chamber of hollow, described lower contact inner chamber has the lower contact inner chamber contraction section 16 shrinking gradually from top to bottom, the flow through water under high pressure of outer shroud nozzle 161 of this 16 pairs of lower contact inner chamber contraction section plays contraction acceleration, the impact force of the water jet that can strengthen ejection to the soil body in stake.
Wherein, the bottom of described core pipe 8 is provided with internal thread, described in the nozzle 15 upper end of putting english be provided with external screw thread, the bottom of described core pipe 8 with described in the nozzle 15 of putting english be threaded, on both fitting faces, be provided with the second O-ring seals 12.
Wherein, described inner chamber of putting english nozzle 15 has the nozzle chamber contraction section 151 shrinking gradually from top to bottom, put english described in described nozzle chamber contraction section 151 the is positioned at below of runner 13, the current that 151 pairs of this nozzle chamber contraction sections add supination through the runner 13 of putting english shrink acceleration, thus the impact force of the water jet that strengthens ejection to the soil body in stake.
Wherein, on the installation endoporus of described guide vane wheel 11, be provided with internal spline, on the corresponding site of described core pipe 8, be provided with external splines, spline joint between described guide vane wheel 11 and described core pipe 8.Spline joint centering precision is high, and steering capability is good, has higher supporting capacity.
Wherein, on the outer wall of described main cylinder 10, be welded with a plurality of ear shape draw rings that circumferentially arrange along it, described ear shape draw ring comprises three uniform top ear shape draw rings 20 and three uniform bottom ear shape draw rings 17, on the outer wall of described top connection 2, by bearing pin 4, is hinged with drop handle 1.
Wherein, on the outer wall corresponding to described top connection inner chamber the first cylindrical section of described top connection 2, be provided with for the installation portion with outer water tube installation, described installation portion comprises the annular boss 21 that protrudes from described outer wall, and is arranged on the external screw thread on described annular boss 21 top tube walls.
Operating principle: as shown in Figure 2, while utilizing Water jet sprayer of the present invention to carry out assisting offshore platform in sinking pile operation, utilize shower nozzle stay cord 27 and drop handle 1 that whole nozzle system is suspended in steel pipe pile body 25, high-pressure rubber pipe 22 is connected with top connection 2, water under high pressure (pressure is 20～30Mpa conventionally) is after high-pressure rubber pipe 22 enters top connection 2, push non retern valve 5 open, by water hole 7, entered in cylinder lumen 19, part water under high pressure enters core tube cavity 18 by the mistake water flow passage 9 on core pipe 8, and be delivered to the nozzle 15 of putting english, under the guide effect of the runner 13 of putting english, produce eddy flow, and form rotating jet from nozzle 15 ejections of putting english, another part water under high pressure enters lower contact 14 along cylinder lumen 19 after the spirality guide vane 111 of guide vane wheel 11 is put english, along 16 rotations of lower contact inner chamber contraction section, contraction, accelerate, finally, from outer shroud nozzle 161 ejections of lower contact 14 and 15 formation of nozzle of putting english, form external-ring jetting-flow.In Fig. 1, arrow is depicted as the direction of High-Pressure Water, external-ring jetting-flow and rotating jet acting in conjunction form multiple jet flow, act on an interior soil body 26, on the soil body 26 surfaces, form large-area water jet erosion district, the soil body 26 is carried out to erosion, and with pile sinking, constantly eliminate the soil plug producing in stake, thereby reduce the resistance of power pile sinking, realize smoothly auxiliary pile sinking.
Three uniform bottom ear shape draw rings 17 of main cylinder 10 are hinged with righting supporting leg 24 one end respectively, medium position connection leg stay cord 23 one end of described righting supporting leg 24, and the other end of supporting leg stay cord 23 is connected on top ear shape draw ring 20.According to the diameter of steel pipe pile body 25, determine the open angle of righting supporting leg 24, utilize supporting leg stay cord 23 to adjust, thereby guarantee that Water jet sprayer is positioned at position, steel pipe pile body 25 axis in the course of the work all the time.
Non retern valve 5 wherein, when not sending into water under high pressure, remains closed condition, its can prevent in Water jet sprayer decentralization process or the situation such as termination of pumping suddenly under, the silt in pile body 25 is circulated in shower nozzle, stops up shower nozzle inner flow passage.
The water under high pressure that auxiliary pile sinking Water jet sprayer provides high-pressure pump sprays at a high speed with multiple jet flow form, and the soil body in stake is carried out to erosion, eliminates soil plug, the automatic Shang Fanzhi of the silt fluid-mixing earth's surface producing in stake.The manufacture simple in structure, easy of auxiliary pile sinking Water jet sprayer, cost are low, this shower nozzle can effectively be abolished soil plug in stake, reduce power penetrating resistance, improve pile sinking efficiency, solve the problems such as hammer, pile sinking be not in place of refusing that occur in pile driving process, reach the object that shortens the platform construction cycle, reduces construction cost.
The above is only giving an example of best mode for carrying out the invention, and the part of wherein not addressing is in detail those of ordinary skills' common practise.Protection scope of the present invention is as the criterion with the content of claim, and any equivalent transformation carrying out based on technology enlightenment of the present invention, also within protection scope of the present invention.
Claims (10)
1. Water jet sprayer assisting offshore platform in sinking pile, is characterized in that, comprising:
Cylindrical shell, described cylindrical shell has the cylinder lumen of hollow, and the upper end of described cylindrical shell is provided with the water inlet that connects described cylinder lumen, and the lower end of described cylindrical shell is provided with the delivery port that connects described cylinder lumen;
Be arranged at the core pipe in described cylinder lumen, described core pipe has the core tube cavity of hollow, described Xin Guan top is provided with the closeouts of water inlet described in selectively shutoff, the below that is positioned at described closeouts on described core pipe is provided with the ring baffle vertical with the axis direction of core pipe, on described ring baffle, be provided with a plurality of water holes, be positioned on the tube wall of core pipe of described ring baffle below and be provided with the mistake water flow passage that a plurality of axis directions along core pipe extend, on the outer wall of described core pipe, be positioned at the described below of crossing water flow passage guide vane wheel is installed, on described guide vane wheel, be provided with spiral helicine guide vane, the below of described guide vane wheel is provided with the nozzle of putting english that is arranged on described Xin Guan bottom, on the inwall of the described nozzle of putting english, be provided with the runner of putting english,
The described nozzle of putting english is corresponding with the delivery port position of described cylindrical shell, described in put english and form outer shroud nozzle between the outer wall of nozzle and the inwall of the delivery port of described cylindrical shell.
2. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 1, it is characterized in that: described cylindrical shell comprises main cylinder, the threaded one end of described main cylinder is connected with top connection, the lower surface of described top connection relies on the upper surface of described ring baffle, the lower contact that has been threaded of the other end of described main cylinder.
3. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 2, it is characterized in that: described top connection has the top connection inner chamber of hollow, described top connection inner chamber comprises the first cylindrical section, conical section and the second cylindrical section being connected successively, the water inlet that described the first cylindrical section is described cylindrical shell from top to bottom.
4. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 3, it is characterized in that: described closeouts comprises non retern valve, the upper end of described non retern valve has the frustum portion suitable with the conical section of described top connection inner chamber, described core tube cavity is inserted from described Xin Guan top in the lower end of described non retern valve, leans the spring being set on described core pipe between described frustum Bu bottom surface and described ring baffle.
5. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 2, is characterized in that: described lower contact has the lower contact inner chamber of hollow, and described lower contact inner chamber has the lower contact inner chamber contraction section shrinking gradually from top to bottom.
6. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 1, is characterized in that: described Xin Guan bottom is provided with internal thread, described in the put english upper end of nozzle be provided with external screw thread, described Xin Guan bottom with described in the nozzle threads of putting english be connected.
7. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 1, is characterized in that: described in the put english inner chamber of nozzle there is the nozzle chamber contraction section shrinking gradually, the below of the runner of putting english described in described nozzle chamber contraction section is positioned at from top to bottom.
8. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 1, it is characterized in that: on the installation endoporus of described guide vane wheel, be provided with internal spline, on the corresponding site of described core pipe, be provided with external splines, spline joint between described guide vane wheel and described core pipe.
9. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 2, is characterized in that: the outer wall of described main cylinder is provided with a plurality of ear shape draw rings that circumferentially arrange along it, on the outer wall of described top connection, by bearing pin, is hinged with drop handle.
10. Water jet sprayer assisting offshore platform in sinking pile as claimed in claim 2, it is characterized in that: on the outer wall corresponding to described top connection inner chamber the first cylindrical section of described top connection, be provided with for the installation portion with outer water tube installation, described installation portion comprises the annular boss that protrudes from described outer wall, and is arranged on the external screw thread on the tube wall of described annular boss top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210012890.9A CN102535470B (en) | 2012-01-16 | 2012-01-16 | Water jet sprayer assisting offshore platform in sinking pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210012890.9A CN102535470B (en) | 2012-01-16 | 2012-01-16 | Water jet sprayer assisting offshore platform in sinking pile |
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| Publication Number | Publication Date |
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| CN102535470A CN102535470A (en) | 2012-07-04 |
| CN102535470B true CN102535470B (en) | 2014-01-15 |
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| CN201210012890.9A Expired - Fee Related CN102535470B (en) | 2012-01-16 | 2012-01-16 | Water jet sprayer assisting offshore platform in sinking pile |
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| CN103953048A (en) * | 2014-05-21 | 2014-07-30 | 济南高达信息技术有限公司 | Upper turbine driving rotary spraying device for ocean drilling platform pile shoe assistant lifting |
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| CN103982665B (en) * | 2014-05-21 | 2016-02-03 | 齐宝兰 | A kind of marine drilling platform assisting in lifting pile shoe dual rotary sprays flushing device |
| CN103967013B (en) * | 2014-05-21 | 2015-11-04 | 胡文超 | A kind of marine drilling platform assisting in lifting pile shoe rotating disc type spray apparatus |
| CN106688619A (en) * | 2016-12-06 | 2017-05-24 | 重庆维得鲜农业发展有限公司 | Water injection device for lentinus edodes sticks |
| WO2019104281A1 (en) * | 2017-11-27 | 2019-05-31 | Zentech, Inc. | Self sealing jetting valve |
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| CN111482298B (en) * | 2020-05-18 | 2021-10-22 | 台州壹品工业设计有限公司 | Tower crane spraying machine nozzle with anti-blocking function |
| CN114393519B (en) * | 2021-12-23 | 2023-05-12 | 武汉大学 | Target distance adjustable nozzle and method suitable for grinding material water jet steel rail grinding |
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| US2612405A (en) * | 1949-06-03 | 1952-09-30 | Ind Karlsruhe Ag | Spraying nozzle |
| JPS55116459A (en) * | 1979-03-02 | 1980-09-08 | Toshio Takagi | Water spray nozzle |
| CN1125163A (en) * | 1995-09-07 | 1996-06-26 | 华东理工大学 | Three-way channel combined water coal slurry gasification nozzle with cyclone |
| JP2002224592A (en) * | 2001-02-01 | 2002-08-13 | Ikeuchi:Kk | Nozzle |
| CN1405429A (en) * | 2002-10-30 | 2003-03-26 | 石油大学(华东) | High-pressure rotary jet rock-breaking drilling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2612405A (en) * | 1949-06-03 | 1952-09-30 | Ind Karlsruhe Ag | Spraying nozzle |
| JPS55116459A (en) * | 1979-03-02 | 1980-09-08 | Toshio Takagi | Water spray nozzle |
| CN1125163A (en) * | 1995-09-07 | 1996-06-26 | 华东理工大学 | Three-way channel combined water coal slurry gasification nozzle with cyclone |
| JP2002224592A (en) * | 2001-02-01 | 2002-08-13 | Ikeuchi:Kk | Nozzle |
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Granted publication date: 20140115 Termination date: 20210116 |