CN107477371A - A kind of natural gas leaking detector - Google Patents
A kind of natural gas leaking detector Download PDFInfo
- Publication number
- CN107477371A CN107477371A CN201710469954.0A CN201710469954A CN107477371A CN 107477371 A CN107477371 A CN 107477371A CN 201710469954 A CN201710469954 A CN 201710469954A CN 107477371 A CN107477371 A CN 107477371A
- Authority
- CN
- China
- Prior art keywords
- umbrella
- detector
- natural gas
- housing
- battery
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/03—Control means
- F17C2250/036—Control means using alarms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0447—Composition; Humidity
- F17C2250/0452—Concentration of a product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of natural gas leaking detector, it includes：Housing, methane detector, getter device, solar cell module, battery, radio transmitting device, controller and alarm；Housing tip sets solar cell module, and enclosure interior sets methane detector, battery, radio transmitting device, controller and warning device；Getter device includes horn-like air entry, wind wheel and motor；Solar cell module is arranged to umbrella, including umbrella cover, umbrella handle and connection umbrella cover and umbrella handle and the umbrella frame that makes umbrella cover to strut and pack up, and solar panel is set on umbrella cover；Controller is connected with methane detector, solar cell module, radio transmitting device, motor and alarm respectively.The natural gas leaking detector of the present invention can convert the solar into electric energy and be powered for it, it is not necessary to which external power supply, detection sensitivity is high, simple in construction, small volume, is easy to carry with, and is detected suitable for long term outdoor.
Description
Technical field
The present invention relates to natural gas leak hunting technology field, and in particular to a kind of natural gas leaking detecting instrument.
Background technology
With the rapid development of urban construction and economic construction, the generally raising of living standards of the people and petro chemical industry
Development, since particularly West-East National Gas Transmission Project puts into operation, natural gas progressively turns into as high-quality and efficient clean energy resource
The leading source of the gas of city gas, promotes the development of social economy, and reduces the pollution to environment.Due to using natural gas
User and unit are more and more, and scope is more and more wider, once accident occurs, will seriously endanger public security.Natural gas be with
Methane is the admixture of gas of main component, simultaneously containing alkane such as a small amount of ethane, propane, butane, also containing carbon dioxide,
Oxygen, nitrogen, hydrogen sulfide, moisture etc..Natural gas composition determines that it is a kind of larger fuel gas of fire risk, is mixed with air
Afterwards, when concentration reaches 5% to 15% in atmosphere, fire explosion may be occurred by running into burning things which may cause a fire disaster, or even cause great wound
Die.
At present, the natural gas leaking measuring method generally used in the transportation storage system of natural gas for：Use combustible gas
Bulk measurement instrument measures to each flange of natural gas system, interface etc..For the sake of security, general natural gas transportation storage
System all carries out outdoor arrangement, smoothly can be diffused in order to the natural gas of leakage in air.But this outdoor arrangement
So that fuel gas measuring instrument its small leakage rate when being measured to outdoor natural gas system flange, interface etc. is difficult
It is measured, because a small amount of natural gas, quickly just by Dilution air, in the case where there is wind, the natural gas of micro- leakage is easy to
It is blown away, causes fuel gas measuring instrument can not accurately measure each flange of natural gas system, interface etc. with the presence or absence of natural
Gas leakage situation.Existing detection of natural gas instrument is required for greatly external power supply, and power circuit once contacts with the natural gas leaked,
The accident of fire explosion etc will certainly occur, therefore, it should avoid external power supply as far as possible.Meanwhile detection of natural gas instrument is most
It is disposed in the outdoor, is monitored in real time on the feed-line and storage tank in field for a long time, external power supply is difficult, even if using electricity
Pond, the electricity of battery are limited, it is also desirable to which periodic replacement battery charges to battery, adds workload, applicability has to be hoisted.
The content of the invention
It is an object of the invention to solve at least the above and/or defect, and provide at least will be described later it is excellent
Point.
A further object of the invention is that solve detection of natural gas instrument in the prior art to need external power supply, or uses electricity
Pond is powered, it is necessary to which battery or charging are frequently changed in timing, are unfavorable for outdoor field detection for a long time and the technical problem such as are used.
In order to realize these purposes and further advantage of the invention, there is provided a kind of natural gas leaking detector, it includes：Shell
Body, methane detector, getter device, solar cell module, battery, radio transmitting device, controller and alarm；
The housing is rigid square casing, and housing front sets display screen and operation button, and housing tip sets the sun
Energy battery component, and the accommodating chamber for storing solar cell module is offered in housing tip, enclosure interior sets methane
Detector, battery, radio transmitting device, controller and warning device；
The getter device include being arranged at the horn-like air entry of housing one side, the wind wheel in housing and with
The motor of wind wheel connection, the tracheae of air entry connection extends to the detection mouth of methane detector, and housing another side is provided with out
Gas port；
The solar cell module is arranged to umbrella, including umbrella cover, umbrella handle and connection umbrella cover and umbrella handle and makes umbrella cover
The umbrella frame that can be strutted and pack up, the umbrella handle are Collapsible structure, and umbrella handle bottom is connected with housing tip, are set on umbrella cover flexible
Solar panel, solar panel be connected with battery the battery respectively with methane detector, radio transmitting device,
Controller, motor and alarm connection；
The controller connects with methane detector, solar cell module, radio transmitting device, motor and alarm respectively
Connect.
Preferably, the back side of shell is additionally provided with the groove for placing reserve battery, and groove is provided with removable cover, institute
Reserve battery is stated to be connected with methane detector, motor, radio transmitting device, controller and alarm respectively.
Preferably, the alarm is audible-visual annunciator.
Preferably, the umbrella cover, umbrella handle and umbrella frame are made up of lightweight PC materials.
Preferably, the umbrella handle bottom and housing tip be hinged or detachable connection.
Preferably, the umbrella handle bottom is connected through a screw thread with housing tip, and concrete structure is：Umbrella handle bottom sets outer
Screw thread, housing tip open up the circular hole that can accommodate umbrella handle bottom, and circular-hole internal-wall face is set to match with umbrella handle bottom external screw thread
Internal thread.
Preferably, the flexible solar panel is arranged to fan-shaped, the splicing of several piece sector flexible solar panel
It is attached to the outer surface of umbrella cover.
Preferably, the connecting line of connection solar panel and battery is provided with inside the umbrella handle.
Compared with prior art, the invention has the advantages that：
Solar cell module is set on one, housing, electric energy is converted the solar into and is supplied for natural gas leaking detector
Electricity, normal detection work is maintained, solar cell module is arranged to contractile umbrella, and solar panel is arranged on umbrella cover
On, big with sunshine contact area, not changed by sun moving direction is influenceed, and light utilization efficiency is high；Without using solar-electricity
Solar cell module can be contracted to volume minimum, storage is positioned in housing, saves space during pond；Run into rainy day or inflammation
Hot summer, umbrella battery component can also be that natural gas leaking detector keeps off the rain or sunshade as umbrella or parasols, avoid examining
Instrument is surveyed to drench with rain or be exposed to the sun infringement.
Secondly, horn-like air entry in getter device is aligned to flange, the interface of natural-gas transfer pipeline and storage tank, lead to
Motor driving suction effort is crossed, surrounding air suction detector is subjected to analysis detection, monitoring sensitivity is high, can avoid
In the case of wind, the natural gas of leakage is blown away so that concentration of methane gas is inaccurate in the gas leakage detected, or even examines
Leakage problem is not measured.
Thirdly, back side of shell be provided with the groove for placing reserve battery, occur in rainy weather or solar cell module therefore
During barrier, when solar cell can not provide the electric energy of abundance, reserve battery can be used.
Four, natural gas leaking detector of the invention be applied to be disposed in the outdoor or the conveyance conduit in field on and liquefy
Monitored on-line on natural gas storage tank, without having to worry about the powerup issue of detector, detecting can report automatically during leakage problem
It is alert, in order to staff's timely processing；Safety check tour personnel can also be carried with to the place of any need detection, carried out
Natural gas leaking detects work.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
The overall appearance structure chart of natural gas leaking detector in Fig. 1 embodiments；
The longitudinal sectional drawing of natural gas leaking detector in Fig. 2 embodiments；
The partial enlarged drawing for the part that the umbrella handle of solar cell module is connected with housing in Fig. 3 one embodiment.
Label in figure：
Housing 100, methane detector 200, getter device 300, solar cell module 400, battery 500, wireless biography
Defeated device 600, controller 700, alarm 800, display screen 110, operation button 120, accommodating chamber 130, air entry 310, wind wheel
320th, motor 330, gas outlet 340, umbrella cover 410, umbrella handle 420, umbrella frame 430, connecting line 440, solar panel 450, outer spiral shell
Line 421, internal thread 422.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of individual other elements or its combination.
As shown in Figure 1, Figure 2 and Figure 3, the invention provides a kind of natural gas leaking detector, it includes：Housing 100, first
Alkane detector 200, getter device 300, solar cell module 400, battery 500, radio transmitting device 600, controller 700
And alarm 800.The alarm 800 is audible-visual annunciator.
The housing 100 is the shell that the rectangular shape with internal cavities formed is combined by front, the back side and side
Body, front set display screen 110 and operation button 120, can intuitively check that methane detector 200 detects on display screen 110
The concentration of the Methane in Air gas arrived, detection staff pass through the operation setting natural gas leaking detector of operation button 120
Function.The top of housing 100 sets solar cell module 400, and is offered on the top of housing 100 for storing solar-electricity
The accommodating chamber 130 of pond component 400.When solar cell module 400 need not be used, minimum volume can be contracted to
Afterwards, it is positioned in accommodating chamber 130, saves space.The inside of housing 100 sets methane detector 200, battery 500, is wirelessly transferred
Device 600, controller 700 and alarm 800.
The getter device 300 includes being arranged at the horn-like air entry 310 of the one side of housing 100, in housing 100
Wind wheel 320 and the motor 330 that is connected with wind wheel 320, the breather pipe that air entry 310 connects extend to methane detector 200
Detection mouth, and the another side of housing 100 is provided with gas outlet 340.It is defeated that horn-like air entry 310 is directed at natural gas to be detected
Flange, the interface of pipeline and storage tank are sent, motor 330 drives wind wheel 320 to rotate, and then produces suction effort, and surrounding is empty
Aspiration enters detector and carries out analysis detection, analyzes methane concentration content therein.In the case of can so wind having been avoided, leakage
Natural gas is blown away so that concentration of methane gas is inaccurate in the gas leakage detected, or even inspection does not measure leakage problem.
The solar cell module 400 is arranged to umbrella, including umbrella cover 410, umbrella handle 420 and connection umbrella cover 410 and
Umbrella handle 420 and the umbrella frame 430 for making umbrella cover 410 to strut and pack up.The umbrella cover 410, umbrella handle 420 and umbrella frame 430 are by lightweight PC
Material is made.The umbrella handle 420 is Collapsible structure, placement convenient for collecting.The bottom of umbrella handle 420 and the top of housing 100 it is be hinged or
Detachable connection, flexible solar panel 450 is set on umbrella cover 410, and the flexible solar panel 450 is arranged to fan
Shape, several piece sector flexible solar panel splice the outer surface for being attached to umbrella cover 410.Solar cell panel assembly and battery
500 connections.The connecting line 440 of connection solar panel 450 and battery 500 is additionally provided with inside umbrella handle 420.Solar-electricity
Pond plate 450 converts the solar into electrical energy transportation into battery 500, is each part power supply of natural gas leaking detector, maintains
Normal detection work.Solar panel 450 is arranged on umbrella cover 410, big with sunshine contact area, is not moved by the sun
Whenever the influence that direction changes, daytime can receive sunshine, and light utilization efficiency is high；When solar-electricity need not be used
During the component 400 of pond, solar cell module 400 can be contracted to volume minimum as shrinking umbrella, be positioned over housing 100
Accommodating chamber 130 in, save space；Even, rainy day or hot summer are run into, umbrella battery component is also used as umbrella or screening
Sunshade is kept off the rain for natural gas leaking detector or sunshade, avoids detector from drenching with rain or be exposed to the sun and damage.
The battery 500 is chargeable lithium cell, its respectively with methane detector 200, radio transmitting device 600, control
Device 700, motor 330 and alarm 800 processed connect, and provide electric energy for above-mentioned part normal work.
The controller 700 be preferably single-chip microcomputer, its respectively with methane detector 200, solar cell module 400,
Radio transmitting device 600, motor 330 and alarm 800 connect.It is battery that controller 700, which controls solar cell module 400,
500 charging processes.The methane concentration value signal detected is sent to controller 700 by methane detector 200, and controller 700 is logical
Cross radio transmitting device 600 and methane concentration value is sent to Surveillance center, when methane concentration value exceedes setting value, controller 700
The attention of staff can also be caused, and find out day based on the alarm of the methane concentration value signal control alarm 800 received
Right gas leakage position timely processing.
In another embodiment, the back side of housing 100 is additionally provided with the groove (not shown) for placing reserve battery, on groove
Provided with removable cover (not shown), reserve battery respectively with methane detector 200, motor 330, radio transmitting device 600, control
Device 700 and alarm 800 connect.When rainy weather or solar cell module 400 break down, solar cell can not carry
During for sufficient electric energy, reserve battery can be used.
In another embodiment, as shown in figure 3, the bottom of the umbrella handle 420 is connected through a screw thread with the top of housing 100, specifically
Structure is：The bottom of umbrella handle 420 sets external screw thread 421, and the top of housing 100 opens up the circular hole that can accommodate the bottom of umbrella handle 420, circular hole
Internal face sets the internal thread 422 to match with the bottom external screw thread of umbrella handle 420.This connected mode is easy to solar cell module
Disassembly and installation between 400 and housing 100.
In summary, natural gas leaking detector of the invention dismounting simple in construction, reasonable in design, convenient or installation, into
This is low, and security reliability is strong；Suitable for be disposed in the outdoor or the conveyance conduit in field on and LNG tank on, Ke Yichang
Time monitors on-line, without considering powerup issue, it is not necessary to frequently changes battery or manual powered, and detection sensitivity is high, inspection
Survey when instrument detects leakage problem can automatic alarm, security reliability is strong；Safety check tour personnel can also carry with to appoint
It what is the need for the place to be detected, carry out natural gas leaking detection work, simple and easy to use, strong applicability.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With.It can be applied to various suitable the field of the invention completely., can be easily for those skilled in the art
Realize other modification.Therefore it is of the invention and unlimited under the universal limited without departing substantially from claim and equivalency range
In specific details and shown here as the legend with description.
Claims (8)
- A kind of 1. natural gas leaking detector, it is characterised in that including：Housing, methane detector, getter device, solar-electricity Pond component, battery, radio transmitting device, controller and alarm；The housing is rigid square casing, and housing front sets display screen and operation button, and housing tip sets solar-electricity Pond component, and the accommodating chamber for storing solar cell module is offered in housing tip, enclosure interior sets CH_4 detection Device, battery, radio transmitting device, controller and warning device；The getter device includes the horn-like air entry, the wind wheel in housing and and wind wheel for being arranged at housing one side The motor of connection, the tracheae of air entry connection extends to the detection mouth of methane detector, and housing another side is provided with gas outlet；The solar cell module is arranged to umbrella, including umbrella cover, umbrella handle and connection umbrella cover and umbrella handle and umbrella cover is supportted The umbrella frame opened and packed up, the umbrella handle are Collapsible structure, and umbrella handle bottom is connected with housing tip, and the flexible sun is set on umbrella cover Energy cell panel, solar panel are connected with battery；The battery is connected with methane detector, radio transmitting device, controller, motor and alarm respectively；The controller is connected with methane detector, solar cell module, radio transmitting device, motor and alarm respectively.
- 2. natural gas leaking detector as claimed in claim 1, it is characterised in that it is standby that the back side of shell is additionally provided with placement With the groove of battery, groove is provided with removable cover, the reserve battery respectively with methane detector, motor, be wirelessly transferred dress Put, the connection of controller and alarm.
- 3. natural gas leaking detector as claimed in claim 1, it is characterised in that the alarm is audible-visual annunciator.
- 4. natural gas leaking detector as claimed in claim 1, it is characterised in that the umbrella cover, umbrella handle and umbrella frame are by lightweight PC materials are made.
- 5. natural gas leaking detector as claimed in claim 4, it is characterised in that the umbrella handle bottom is hinged with housing tip Or detachable connection.
- 6. natural gas leaking detector as claimed in claim 5, it is characterised in that the umbrella handle bottom passes through with housing tip Threaded connection, concrete structure are：Umbrella handle bottom sets external screw thread, and housing tip opens up the circular hole that can accommodate umbrella handle bottom, circle Hole internal face sets the internal thread to match with umbrella handle bottom external screw thread.
- 7. natural gas leaking detector as claimed in claim 6, it is characterised in that the flexible solar panel is arranged to Sector, several piece sector flexible solar panel splice the outer surface for being attached to umbrella cover.
- 8. natural gas leaking detector as claimed in claim 7, it is characterised in that connection solar energy is provided with inside the umbrella handle The connecting line of cell panel and battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710469954.0A CN107477371A (en) | 2017-06-20 | 2017-06-20 | A kind of natural gas leaking detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710469954.0A CN107477371A (en) | 2017-06-20 | 2017-06-20 | A kind of natural gas leaking detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107477371A true CN107477371A (en) | 2017-12-15 |
Family
ID=60594071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710469954.0A Pending CN107477371A (en) | 2017-06-20 | 2017-06-20 | A kind of natural gas leaking detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107477371A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118856A (en) * | 2019-05-17 | 2019-08-13 | 重庆德旭企业管理有限公司 | A kind of environmental protection CH_4 detection device |
| CN111458383A (en) * | 2019-01-21 | 2020-07-28 | 中国石油天然气股份有限公司 | Combustible gas detection device |
| CN111596013A (en) * | 2020-07-08 | 2020-08-28 | 宁夏诺克银丰智能科技有限公司 | Gaseous detector that detects of online all-in-one arbitrary combination of high in clouds thing allies oneself with |
| CN112730519A (en) * | 2020-12-21 | 2021-04-30 | 哈尔滨工业大学 | Portable methane trace leakage quantitative detector and detection method thereof |
-
2017
- 2017-06-20 CN CN201710469954.0A patent/CN107477371A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458383A (en) * | 2019-01-21 | 2020-07-28 | 中国石油天然气股份有限公司 | Combustible gas detection device |
| CN110118856A (en) * | 2019-05-17 | 2019-08-13 | 重庆德旭企业管理有限公司 | A kind of environmental protection CH_4 detection device |
| CN111596013A (en) * | 2020-07-08 | 2020-08-28 | 宁夏诺克银丰智能科技有限公司 | Gaseous detector that detects of online all-in-one arbitrary combination of high in clouds thing allies oneself with |
| CN112730519A (en) * | 2020-12-21 | 2021-04-30 | 哈尔滨工业大学 | Portable methane trace leakage quantitative detector and detection method thereof |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171215 |
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| WD01 | Invention patent application deemed withdrawn after publication |