CN107607266A - A kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure - Google Patents
A kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure Download PDFInfo
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- CN107607266A CN107607266A CN201711064763.2A CN201711064763A CN107607266A CN 107607266 A CN107607266 A CN 107607266A CN 201711064763 A CN201711064763 A CN 201711064763A CN 107607266 A CN107607266 A CN 107607266A
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- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 238000002474 experimental method Methods 0.000 title claims abstract description 17
- 238000004088 simulation Methods 0.000 claims abstract description 65
- 238000007789 sealing Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 230000011218 segmentation Effects 0.000 claims abstract description 13
- 241000973497 Siphonognathus argyrophanes Species 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 description 1
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Abstract
The invention discloses a kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure, it is characterized in that, including simulation doorframe, simulation sluice gate and corollary equipment, corollary equipment includes liquid level gauge, filling device, inflating device, pressure bladder aerating device and leakage water collecting container.The segmented sluice gate seal test device of the present invention can realize the experiment of rubber seal and both crossover sites sealing properties between pressure bladder, segmentation simultaneously；Can be with Adjustment Tests hydraulic pressure, consequently facilitating sealing property of the checking sealing structure under different hydraulic pressure heads；Meanwhile experimental rig is compact-sized, it is easy to fabricate.
Description
Technical field
The present invention relates to nuclear power station field, is tried more particularly to a kind of segmented sluice door sealing of adjustable experiment hydraulic pressure
Experiment device.
Background technology
AP1000 nuclear power plants refuelling pool sluice gate uses segmentation structure (referring to Fig. 1 and Fig. 2).Used between each segmentation
Bolt group connects, and sealing surface 100 sets rubber seal between segmentation, is sealed by the thrust of bolt；Whole sluice
The U-shaped sealing surface 210 of door door body 200 periphery sets two pass rubber seal air bag 220, fills~0.25MPa in rubber seal air bag
Compressed air, and the phase top pressure of doorframe sealing surface 230 on sluice gate gate slot, carried out by the pressure on top surface of rubber seal air bag close
Envelope.
Rubber seal and rubber seal air bag collectively form the water-stop border of refuelling pool sluice gate, rubber seal
Sealing with rubber seal air bag crossover sites 110 is that the key issue of concern is needed in design and manufacturing process.Technically need
A set of segmented sluice gate seal test device is provided, in order to which the parameter related to sealing structure and sealing property is carried out
Checking and optimization.
The content of the invention
In view of the deficiencies in the prior art, it is close that the technical problems to be solved by the invention are to provide a set of segmented sluice gate
Testing sealing device, in order to which the parameter related to sealing structure and sealing property is verified and is optimized.
To achieve the above object, the present invention proposes a kind of segmented sluice gate leakage test dress of adjustable experiment hydraulic pressure
Put, for the checking and optimization of segmented sluice door sealing structure and sealing property relevant parameter.Specifically, the present invention carries
The technical scheme of confession is as follows：
A kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure, including simulation doorframe, simulation sluice gate
And corollary equipment；Described simulation doorframe one end is enclosed construction, and the other end is Open architecture, in the enclosed construction
Water-filling ozzle, exhaust nozzle and pressure air-inflating tube mouth are provided with the top of one end；It is provided with and encloses on the downside of one end of Open architecture
Weir, bottom are provided with draining ozzle；The simulation sluice gate periphery is provided with pressure bladder, and body is made up of two segmentations, institute
Rubber seal is simulated in setting between stating segmentation, and the simulation sluice gate can be placed into the simulation doorframe；It is described with being arranged
It is standby to include filling device, inflating device, pressure bladder aerating device and leakage water collecting container, the filling device connection
To the water-filling ozzle, the inflating device is connected to the pressure air-inflating tube mouth, and the pressure bladder aerating device connects
It is connected on the inflation tube nozzle of the pressure bladder side, the leakage water collecting container is connected to the draining ozzle.
Preferably, the simulation doorframe is a cylinder-like structure；A simulation sluice gate generally disc-shaped structure, institute
State two and be segmented into upper half disk and lower half disk；The pressure bladder is annular.
Preferably, the corollary equipment also includes liquid level gauge, under one end of the enclosed construction of the simulation doorframe
Side is provided with liquid level gauge ozzle, and the liquid level gauge is connected to the liquid level gauge ozzle, for monitoring the simulation left half space of doorframe
Water level.
Preferably, the upper half disk and the lower half disk of the simulation doorframe and the simulation sluice gate use steel
Structure is made.
Preferably, the stage casing of the simulation doorframe is provided with locating ring and positioned fastener, for fixing the simulation water
Gate.
Further, the positioned fastener is along the uniform bolt group of the simulation doorframe ring.
Preferably, the both sides of the pressure bladder are provided with blend stop.
Preferably, the pressure bladder aerating device has pressure gauge and pressure regulator valve, can monitor in the pressure bladder
Air pressure, and adjust the blowing pressure.
A kind of segmented sluice gate seal test device test method, uses segmented sluice as claimed in claim 1
Door sealing experimental rig, it is characterised in that comprise the following steps：
A. simulation sluice gate assembling is completed, simulation sluice gate is placed into simulation doorframe, and is inflated by pressure bladder
Ozzle completes pressurization inflation, and in this case, simulation sluice gate is divided into leftward space and rightward space by doorframe is simulated, and is revolving
The tight axially position bolt group being arranged on simulation doorframe, completes the axially position to simulating sluice gate；
B. water-filling is carried out to simulation doorframe left side by simulating the water-filling ozzle on top on the left of doorframe, now should be by analog gate
The Exhaust Open on top on the left of frame；
C. by simulating the pressure air-inflating tube mouth on top on the left of doorframe to being carried out pneumatic compression on the left of simulation doorframe so that mould
The water surface top for intending doorframe leftward space is the forced air of setup pressure value, should will now simulate the exhaust on top on the left of doorframe
Mouth is closed；
D. according to the pressure, the pressure of pressure bladder, the structure of pressure bladder that need to adjust pressure air-inflating tube road of experiment
The design factors such as form, the structure type for connecting sealing gasket, the structure type of seal groove, doorframe OR gate page sealing surface roughness,
Leakage situation to be observed, and the volume of water leakage is measured by leaking water collecting container, the binding tests time calculates slip, so as to
Grasp the sealing property of corresponding sealing structure.
The solution have the advantages that：
1) experiment of rubber seal and both crossover sites sealing properties between pressure bladder, segmentation can be realized simultaneously；
2) can be with Adjustment Tests hydraulic pressure, consequently facilitating sealing property of the checking sealing structure under different hydraulic pressure heads；
3) experimental rig is compact-sized, is easy to fabricate.
The method of the present invention and caused technique effect are described further below with reference to accompanying drawing, to be fully understood from
The purpose of the present invention, feature and effect.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the elevation of segmented refuelling pool sluice gate
Fig. 2 is the top view of segmented refuelling pool sluice gate
Fig. 3 is the overall structure figure of the preferred embodiment of the segmented sluice gate seal test device of the present invention
Fig. 4 is Fig. 3 A-A faces sectional view
Fig. 5 is the partial enlarged drawing in Fig. 3 B portions
Fig. 6 is the simulation doorframe of the preferred embodiment of the segmented sluice gate seal test device of the present invention
Fig. 7 is the simulation sluice gate of the preferred embodiment of the segmented sluice gate seal test device of the present invention
Fig. 8 is the partial enlarged drawing in Fig. 7 C portions
Description of reference numerals：
Sealing surface between 100- segmentations；110- crossover sites；200- sluice gate door body；The U-shaped sealing of 210- door body periphery
Face；220- two pass rubber seal air bags；230- doorframe sealing surfaces；10- simulates doorframe；11- water-filling ozzles；12- pressure air-inflating tubes
Mouth；13- exhaust nozzles；14- axially position rings；15- bolt groups；16- cofferdam；17- draining ozzles；18- liquid level gauge ozzles；19-
Cylinder；20- simulates sluice gate；21- blend stops；22- pressure bladders；23- pressure bladder inflation tube nozzles；On 24- simulation sluice gates
Semi-disc；25- rubber seal；26- simulates sluice gate lower half circle disk；30- forced airs；40- water；50- water leakages.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The present embodiment using one it is columnar structured simulate doorframe, cylinder-like structure one end is enclosed construction, set simultaneously
Some interfaces are put, the other end is Open architecture, sets cofferdam.Sluice gate is simulated using a disc-shaped structure, it is discoid
Structure is divided into upper half disk and lower half disk, for simulating two segmentations of sluice gate, is set between upper half disk and lower half disk
Rubber seal is put, whole disk periphery sets pressure bladder, and the inflation tube nozzle of pressure bladder is arranged on outside.
When carrying out leakage test, among simulation sluice gate is placed into simulation doorframe, simulation sluice gate will be simulated in doorframe
Space be divided into two.After the inflation of pressure bladder is completed, you can carry out water-filling to the closing space on the left of simulation sluice gate
And inflating pressure, examine the leakage situation for simulating sluice gate.
Specifically, referring to shown in Fig. 3-8, the segmented sluice door sealing for the adjustable experiment hydraulic pressure that the present embodiment provides tries
Experiment device includes simulation doorframe 10, simulation sluice gate 20 and corollary equipment (not shown).Wherein corollary equipment mainly includes
Liquid level gauge, filling device, inflating device, pressure bladder aerating device and leakage water collecting container.
It is preferably a cylinder 19 to simulate doorframe 10, can use structure steel fabrication.The left end of cylinder 19 has bottom, is closed
Structure, right-hand member do not have bottom, are Open architecture.Left side top is provided with water-filling ozzle 11, exhaust nozzle 13 and pressurization inflation
Ozzle 12；Liquid level gauge ozzle 18 is set on the downside of left end, and connection liquid level gauge simulates the water level of the left half space of doorframe to monitor.Right-hand member
Downside sets a cofferdam 16, and sets a draining ozzle 17 in bottom right side, can be connected to leakage water collecting container.Analog gate
The stage casing of frame is provided with axially position ring 14 and axial fastener, preferred for fixed-analog sluice gate, wherein axial fastener
For the uniform bolt group 15 of edge simulation doorframe ring.
It is preferably a disc-shaped structure that it is overall, which to simulate sluice gate 20, and disk periphery sets an annular enclosed type pressure bladder
22, the both sides of pressure bladder 22 are provided with blend stop 21, and pressure bladder inflation tube nozzle 23 is arranged on the side of pressure bladder 22.The sheet of disk
Body can use structure steel fabrication, be made up of two segmentations, i.e. upper half disk 24 and lower half disk 26, upper half disk 24 and lower half circle
Simulation rubber seal 25 is set between disk 26.
Filling device, it is connected to the water-filling ozzle 11 on simulation doorframe 10 left side top.
Inflating device, it is connected to the pressurization inflatable interface 12 on simulation doorframe 10 left side top, the device band pressure gauge
And pressure regulator valve, the air pressure of the simulation leftward space of doorframe 10 can be measured and adjust the blowing pressure.
Pressure bladder aerating device, it is connected to the gas tube for the side of pressure bladder 22 for being arranged on simulation sluice gate 20 periphery
On mouth 23, the device band pressure gauge and pressure regulator valve, the air pressure in pressure bladder can be monitored, and adjust the blowing pressure.
Water collecting container is leaked, for collecting water leakage 50, and the volume of measurable water leakage 50.
The segmented sluice gate seal test device of the present embodiment forms adjustable experiment hydraulic pressure using forced air 30.Should
Experimental rig can realize the experiment of rubber seal and both crossover sites sealing properties between pressure bladder, segmentation simultaneously；Also
Can be with Adjustment Tests hydraulic pressure, consequently facilitating sealing property of the checking sealing structure under different hydraulic pressure heads；Meanwhile experimental rig
It is compact-sized, it is easy to fabricate.
The segmented sluice gate seal test device test method of the present embodiment is as follows：
Simulation sluice gate 20 is completed to assemble.I.e. by the close of upper half disk 24, lower half disk 26, rubber seal 25 and annular
Envelope air bag 22 and blend stop 21 are assembled into a complete simulation sluice gate 20.
Simulation sluice gate 20 is placed into simulation doorframe 10, and the pressure bladder by being arranged on side (right side) is inflated
Ozzle 23 completes the pressurization inflation to pressure bladder 22, and in this case, simulation sluice gate 20 is divided into two by doorframe 10 is simulated
Individual space：Leftward space and rightward space.Screw be arranged on simulation doorframe 10 on axially position bolt group 15, complete to mould
Intend the axially position of sluice gate 20.
Water-filling ozzle 11 by simulating the left side top of doorframe 10 will should now simulate to simulating the left side water-filling 40 of doorframe 10
The exhaust nozzle 13 on top is opened on the left of doorframe.
By simulating the pressure air-inflating tube mouth 12 on the left side top of doorframe 10 to simulating the left side inflating pressure of doorframe 10 so that left
It is the forced air 30 of setup pressure value above the water surface of side, the exhaust nozzle 13 for simulating top on the left of doorframe should be now closed.
According to the pressure, the pressure of pressure bladder, the structure shape of pressure bladder that need to adjust pressure air-inflating tube road of experiment
The design factors such as formula, the structure type for connecting sealing gasket, the structure type of seal groove, doorframe OR gate page sealing surface roughness, see
Examine leakage situation.And the volume of water leakage can be measured by leaking water collecting container, and the binding tests time calculates slip, from
And grasp the sealing property of corresponding sealing structure.
Claims (5)
1. a kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure, it is characterised in that including simulation doorframe, mould
Intend sluice gate and corollary equipment；
Described simulation doorframe one end is enclosed construction, and the other end is Open architecture, is pushed up in one end of the enclosed construction
Portion is provided with water-filling ozzle, exhaust nozzle and pressure air-inflating tube mouth；Cofferdam, bottom are provided with the downside of one end of Open architecture
It is provided with draining ozzle；
The simulation sluice gate periphery is provided with pressure bladder, and body is made up of two segmentations, and simulation is set between the segmentation
Rubber seal, the simulation sluice gate can be placed into the simulation doorframe；
The corollary equipment includes filling device, inflating device, pressure bladder aerating device and leakage water collecting container, institute
State filling device and be connected to the water-filling ozzle, the inflating device is connected to the pressure air-inflating tube mouth, the sealing
Gas generator for air bag is connected on the inflation tube nozzle of the pressure bladder side, and the leakage water collecting container is connected to the row
Spout.
2. segmented sluice gate seal test device as claimed in claim 1, it is characterised in that the simulation doorframe is a circle
Tubular structure；A simulation sluice gate generally disc-shaped structure, it is described two to be segmented into upper half disk and lower half disk；Institute
State pressure bladder and be arranged at side for annular, inflation tube nozzle.
3. segmented sluice gate seal test device as claimed in claim 1, it is characterised in that the corollary equipment also includes
Liquid level gauge, one end downside of the enclosed construction of the simulation doorframe are provided with liquid level gauge ozzle, the liquid level gauge connection
To the liquid level gauge ozzle, for monitoring the water level of the simulation left half space of doorframe.
4. segmented sluice gate seal test device as claimed in claim 1, it is characterised in that the stage casing of the simulation doorframe
Locating ring and positioned fastener are provided with, for fixing the simulation sluice gate and bearing to test hydraulic pressure.
5. a kind of segmented sluice gate seal test device test method, uses segmented sluice gate as claimed in claim 1
Seal test device, it is characterised in that comprise the following steps：
A. simulation sluice gate assembling is completed, simulation sluice gate is placed into simulation doorframe, and pass through pressure bladder inflation tube nozzle
Pressurization inflation is completed, in this case, simulation sluice gate is divided into leftward space and rightward space by doorframe is simulated, then screws and set
The bolt group on simulation doorframe is put, completes the axially position to simulating sluice gate；
B. simulation sluice should be higher than that to progress water-filling on the left of simulation doorframe, water level by simulating the water-filling ozzle on top on the left of doorframe
The interface of door upper half disk and lower half disk, it should will now simulate the Exhaust Open on top on the left of doorframe；
C. by simulating the pressure air-inflating tube mouth on top on the left of doorframe to being carried out pneumatic compression on the left of simulation doorframe so that analog gate
It is the forced air of setup pressure value above the water surface of frame leftward space, the exhaust outlet for simulating top on the left of doorframe should be now closed
Close；
D. according to the pressure for needing to adjust pressure air-inflating tube road of experiment, the pressure of pressure bladder, the structure type of pressure bladder,
Design factor, the observations such as structure type, the structure type of seal groove, doorframe OR gate page the sealing surface roughness of sealing gasket is connected to let out
Leakage situation, and by leaking the volume of water collecting container measurement water leakage, the binding tests time calculates slip, so as to grasp phase
Answer the sealing property of sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064763.2A CN107607266A (en) | 2017-11-02 | 2017-11-02 | A kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064763.2A CN107607266A (en) | 2017-11-02 | 2017-11-02 | A kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107607266A true CN107607266A (en) | 2018-01-19 |
Family
ID=61085800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711064763.2A Pending CN107607266A (en) | 2017-11-02 | 2017-11-02 | A kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure |
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| CN (1) | CN107607266A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362442A (en) * | 2018-03-29 | 2018-08-03 | 山东和富工程检测有限公司 | A kind of fire-fighting plough groove type pipe joint reveals experimental rig without sealing ring |
| CN110095238A (en) * | 2019-05-31 | 2019-08-06 | 北京长城华冠汽车技术开发有限公司 | Electromechanical testing platform cooling system method for testing tightness and leak-testing apparatus |
| CN110907329A (en) * | 2019-12-04 | 2020-03-24 | 重庆大学 | Large-scale corrosion test system and test method thereof |
| CN113818553A (en) * | 2021-11-24 | 2021-12-21 | 北京清源华建环境科技有限公司 | Intelligent control efficient sealing hydraulic rotary weir gate |
| CN114703807A (en) * | 2022-04-11 | 2022-07-05 | 兰州安钧电子科技有限公司 | Novel excellent performance's irrigation gate start-stop control device |
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| CN102435398A (en) * | 2011-09-07 | 2012-05-02 | 中核华誉工程有限责任公司 | Test unit of cavity sluice gate of nuclear power station reactor |
| CN104019947A (en) * | 2014-06-16 | 2014-09-03 | 长沙金虹水工机械厂 | Gate detecting equipment for monitoring practical waterpower environment |
| KR20150000187A (en) * | 2013-06-24 | 2015-01-02 | 현대중공업 주식회사 | Semi-submersible barge access gate test method |
| CN205035770U (en) * | 2015-08-17 | 2016-02-17 | 上海核工程研究设计院 | A water gate that is used for pressurized -water nuclear power station pond of reloading |
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| US4617824A (en) * | 1985-06-21 | 1986-10-21 | R.R. Mcglogan Equipment Ltd. | Cylinder head pressure testing apparatus |
| CN102435398A (en) * | 2011-09-07 | 2012-05-02 | 中核华誉工程有限责任公司 | Test unit of cavity sluice gate of nuclear power station reactor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362442A (en) * | 2018-03-29 | 2018-08-03 | 山东和富工程检测有限公司 | A kind of fire-fighting plough groove type pipe joint reveals experimental rig without sealing ring |
| CN108362442B (en) * | 2018-03-29 | 2024-04-19 | 山东和富工程检测有限公司 | Sealing ring-free leakage test device for groove type pipe joint for fire control |
| CN110095238A (en) * | 2019-05-31 | 2019-08-06 | 北京长城华冠汽车技术开发有限公司 | Electromechanical testing platform cooling system method for testing tightness and leak-testing apparatus |
| CN110095238B (en) * | 2019-05-31 | 2021-04-23 | 北京长城华冠汽车技术开发有限公司 | Sealing detection equipment for cooling system of motor test bench |
| CN110907329A (en) * | 2019-12-04 | 2020-03-24 | 重庆大学 | Large-scale corrosion test system and test method thereof |
| CN113818553A (en) * | 2021-11-24 | 2021-12-21 | 北京清源华建环境科技有限公司 | Intelligent control efficient sealing hydraulic rotary weir gate |
| CN113818553B (en) * | 2021-11-24 | 2022-02-08 | 北京清源华建环境科技有限公司 | Intelligent control efficient sealing hydraulic rotary weir gate |
| CN114703807A (en) * | 2022-04-11 | 2022-07-05 | 兰州安钧电子科技有限公司 | Novel excellent performance's irrigation gate start-stop control device |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Applicant after: SHAANXI SPECIAL RUBBER PRODUCTS Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Applicant before: SHAANXI SPECIAL RUBBER PRODUCTS Co.,Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180119 |