CN109519578A - A kind of natural gas temperature-control safety valve - Google Patents
A kind of natural gas temperature-control safety valve Download PDFInfo
- Publication number
- CN109519578A CN109519578A CN201811597301.1A CN201811597301A CN109519578A CN 109519578 A CN109519578 A CN 109519578A CN 201811597301 A CN201811597301 A CN 201811597301A CN 109519578 A CN109519578 A CN 109519578A
- Authority
- CN
- China
- Prior art keywords
- temperature
- valve
- valve body
- function
- natural gas
- 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.)
- Withdrawn
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000003345 natural gas Substances 0.000 title claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002737 fuel gas Substances 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000008358 core component Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000006870 function Effects 0.000 description 22
- 239000007789 gas Substances 0.000 description 13
- 238000004880 explosion Methods 0.000 description 5
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
Abstract
A kind of natural gas temperature-control safety valve, the side of temperature controlled safe valve body are equipped with block valve, and the upper setting function of temperature control module of block valve, top is provided with solenoid valve functional module.The core component of function of temperature control module is temperature-sensing element；Solenoid valve functional module is made of solenoid valve casing, electromagnetic coil, electromagnetic core, pedestal etc., and the bottom of iron core is fixed by circlip；Function of temperature control module and solenoid valve functional module it is whole independently of temperature controlled safe valve body except.The drive mechanism of valve is made of inner valve stem and external valve bonnet, and for inner valve stem in temperature controlled safe valve body, stem bottom is equipped with sealing element, and inner valve stem and external casing interior are equipped with magnet.One end of temperature control valve body is equipped with outlet passageway, and the other end of temperature control valve body is equipped with inlet channel.
Description
Technical field
The present invention relates to machinery field more particularly to natural gas valve, especially a kind of natural gas temperature-control safety valve.
Background technique
With the development of natural gas, natural gas is as a kind of Novel clean-fuel, and the use in resident living is increasingly
Extensively, natural gas is a kind of combustible material, when content reaches a certain concentration range in air, meets open fire and explodes, although now
Many occasions using natural gas are fitted with natural air valve, but structure is simple, has a single function, only with the work of ordinary tap
With, can not play anti-leak, it is anti-kindling etc. multiple functions, practicability is poor, safety is lower.
Summary of the invention
The purpose of the present invention is to provide natural gas temperature-control safety valves, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of natural gas temperature-control safety valve, including temperature control are pacified
Full valve ontology, inlet channel, outlet passageway, outer valve rod, function of temperature control module, electromagnet functional module, solenoid valve casing, first
Magnet, valve rod, valve port pad, spring, housing, the second magnet, circlip, gasket, wherein pacify the side of the temperature controlled safe valve body
Equipped with the function of temperature control module, the top of the function of temperature control module is provided with the electromagnet functional module, the electromagnetism
Electromagnetic coil is installed, cored, the two sides of iron core bottom end are installed at the middle part of electromagnet functional module on the inside of iron functional module
Circlip is installed, the inside of the function of temperature control module is equipped with temperature-sensing element, and housing coaxial arrangement is in the upper end of outer valve rod, cover
The inside of shell is equipped with second magnet and the circlip, and the function of temperature control module is mounted on the outside of the outer valve rod, cover
The top of shell, the inside of the outer valve rod are equipped with the valve rod, and the top of the valve rod is equipped with first magnet, described
The bottom end of valve rod is equipped with the valve port pad；One end of the temperature controlled safe valve body is equipped with the outlet passageway, the temperature
The other end for controlling safe valve body is equipped with the inlet channel.
Further, use temperature shape memory alloy block as temperature-sensing element, existed using temperature shape memory alloy block
The thrust that deformation generates when temperature increases, when environment temperature reaches 60 DEG C ± 3 DEG C, the outer valve rod of driving is mobile, and outer valve rod drives valve
Bar movement, closes valve, and valve is automatically closed without external force, closes gas source.
Further, the outside of the temperature controlled safe valve body is equipped with fuel gas alarm, the fuel gas alarm packet
An action signal output end has been included, has passed through control between the action signal output end and the control terminal of electromagnet functional module
Line connection processed.When gas leakage occurs, fuel gas alarm can link with natural gas temperature-control safety valve, in solenoid valve functional module
Iron core push outer valve rod, rapid-closure damper, closing gas source.The fuel gas alarm is using known skill in the prior art
Art scheme, those skilled in the art have understood the known solution of fuel gas alarm, details are not described herein.
Further, electromagnetic coil is powered using 12V DC electricity, and safe operation is reliable.
Further, the temperature controlled safe valve body is integrally formed design.
Further, the temperature controlled safe valve body is cooperated based on the magnet of inside and outside valve rod, and structure is simple, and engaging is secured,
It is easy to implement the manual switch of temperature controlled safe valve body, the closing and unlatching of valve can be realized by lifting or pressing, safety
Reliably, time saving and energy saving.
Further, the temperature controlled safe valve body is isolated by the outer valve rod, function of temperature control module and electromagnetism
Except valve functional module entirety is independently of temperature controlled safe valve body, it is not directly contacted with the medium in pipeline, has prevented operating
Medium leakage when valve opening or closing.
Compared with prior art, the beneficial effects of the present invention are: this kind of natural gas temperature-control safety valve, collection quick closing valve function are lost
Fire heating function of self closing and leakage function of self closing are integrated, and in stopping gas, only need to gently lift solenoid valve casing or valve bonnet
, accident potential caused by avoiding user due to negligence forgets to close cylinder angle valve or be not closed completely, securely and reliably,
It is time saving and energy saving；Valve rod is respectively driven using electromagnet and temperature shape memory alloy block, it can or gas alarm excessively high in temperature
Automatic-closing valve when device detects gas leakage prevents from causing explosion accident.
Detailed description of the invention
Fig. 1 is the external schematic view of the front view of natural gas temperature-control safety valve；
Fig. 2 is the schematic diagram of the section structure of natural gas temperature-control safety valve；
Fig. 3 is the circuit diagram between natural gas temperature-control safety valve and fuel gas alarm；
In appended drawing reference: 1- temperature controlled safe valve body；2- inlet channel；3- outlet passageway；The outer valve rod of 4-；5- function of temperature control mould
Block；6- electromagnet functional module；7- solenoid valve casing；8- electromagnetic coil；9- iron core；10- pedestal；11- circlip；The first magnetic of 12-
Iron；13- valve rod；14- valve port pad；15- spring；16- housing；The second magnet of 17-, 18- circlip；19- temperature-sensing element；20- gasket；
21- fuel gas alarm.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 ~ 3, a kind of natural gas temperature-control safety valve of the invention, including temperature controlled safe valve body (1), air inlet is please referred to lead to
Road (2), outlet passageway (3), outer valve rod (4), function of temperature control module (5), electromagnet functional module (6), solenoid valve casing (7),
Electromagnetic coil (8), iron core (9), pedestal (10), circlip (11), the first magnet (12), valve rod (13), valve port pad (14), spring
(15), housing (16), the second magnet (12), circlip (18), temperature-sensing element (19), gasket (20), it is characterised in that: the temperature control
The side of safe valve body (1) is equipped with the function of temperature control module (5), and the top of the function of temperature control module (5) is provided with
The electromagnet functional module (6) is equipped with the electromagnetic coil (8), the electricity on the inside of the electromagnet functional module (6)
It is equipped in the middle part of magnet functional module (6) iron core (9), the two sides of iron core (9) bottom end are equipped with the circlip
(11)；The inside of the function of temperature control module (5) is equipped with the temperature-sensing element (19), and the inside of the housing (16) is equipped with institute
The second magnet (12) and the circlip (18) are stated, the function of temperature control module (5) is mounted on the outside of the outer valve rod (4), institute
The inside for stating outer valve rod (4) is equipped with the valve rod (13), and the top of the valve rod (13) is equipped with first magnet (12),
The bottom end of the valve rod (13) is equipped with the valve port pad (14)；One end of the temperature controlled safe valve body (1) is equipped with described
The other end of outlet passageway (3), the temperature controlled safe valve body (1) is equipped with the inlet channel (2).
Further, temperature controlled safe valve body (1) is equipped with temperature-sensing element (19), is made using temperature shape memory alloy
For temperature-sensing element (19), the thrust of generation is deformed when the temperature rises using temperature-sensing element (19), driving part is mobile, works as environment
When temperature reaches 60 DEG C ± 3 DEG C, temperature-sensing element (19) increases deformation since temperature raises and generates longitudinal thrust, in longitudinal thrust
Active force under, temperature-sensing element (19) pushes solenoid valve base (10) to move upwards, since solenoid valve base (10) is and housing
(16) it is connected as one, so housing (16) can move up together with the movement of solenoid valve base (10), due to inside and outside magnetic
The active force of iron, interior first magnet (12) can move down together with inner valve stem (13) and valve port pad (14), in the attached of spring (15)
Adding under active force, valve port pad (14) cuts off the channel of temperature controlled safe valve body (1), and gas source is cut off, and it is sensitive efficient, completely certainly
The movement of power formula, avoids the generation of explosion accident, improves the safety that temperature controlled safe valve body (1) uses.
Further, the outside of temperature controlled safe valve body (1) is equipped with fuel gas alarm (21), fuel gas alarm (21) with
It is electrically connected between the temperature controlled safe valve body (1), when fuel gas alarm (21) monitors combustible gas leakage, combustion gas report
Alert device (21) can be sent a signal to temperature controlled safe valve body (1) immediately, and electromagnetic coil (8) is powered immediately, solenoid valve base
(10) it can be moved up under the action of electromagnetic force with solenoid valve casing (7), since solenoid valve casing (7) is connected as with housing (16)
One, so housing (16) can move up together with the movement of solenoid valve casing (7), due to the active force of interior external magnet,
Interior first magnet (12) can move down together with inner valve stem (13) and valve port pad (14), under the additional forces of spring (15),
Valve port pad (14) cuts off the channel of temperature controlled safe valve body (1), and gas source is cut off, and sensitive efficient, high degree of automation avoids
The generation of explosion accident, improves the safety that temperature controlled safe valve body (1) uses.
Further, the outside of temperature controlled safe valve body (1) is equipped with fuel gas alarm (21), fuel gas alarm (21) with
It is electrically connected between electromagnetic coil (8) by 12V DC, 12V DC voltage is the safe voltage lower than 36V, and safe operation is reliable.
Further, temperature controlled safe valve body (1) is integrally formed design, beautiful and generous, is simple to manufacture, integral strength
Height, air-tightness is good, long service life.
Further, the magnetic force between the magnet based on inside and outside valve rod influences, and structure is simple, and engaging securely, is easy to implement
Valve can be realized by lifting or pressing solenoid valve casing (7) or housing (16) in the manual switch of temperature controlled safe valve body
It closes and opens, it is securely and reliably, time saving and energy saving.
Further, temperature controlled safe valve body is inside and outside is isolated by outer valve rod (4), function of temperature control module and solenoid valve
Except functional module entirety is independently of temperature controlled safe valve body, it is not directly contacted with, has prevented in operation valve with the medium in pipeline
Medium leakage when door opens or closes.
Working principle: the side of this kind of natural gas temperature-control safety valve, temperature controlled safe valve body (1) is equipped with function of temperature control mould
Block (5), the top of function of temperature control module (5) are provided with electromagnet functional module (6), the external peace of temperature controlled safe valve body (1)
Equipped with fuel gas alarm (21), it is electrically connected between fuel gas alarm (21) and the temperature controlled safe valve body (1), when combustion gas report
When alert device (21) monitor combustible gas leakage, fuel gas alarm (21) can send a signal to temperature controlled safe valve body immediately
(1), electromagnetic coil (8) is powered immediately, and solenoid valve base (10) and solenoid valve casing (7) can move up under the action of electromagnetic force,
Since solenoid valve casing (7) is connected as one with housing (16), so housing (16) can moving with solenoid valve casing (7)
Make and move up together, due to the active force of interior external magnet, interior first magnet (12) can be together with inner valve stem (13) and valve port pad (14)
It moves down, under the additional forces of spring (15), valve port pad (14) cuts off the channel of temperature controlled safe valve body (1), gas
Source is cut off, and sensitive efficient, high degree of automation avoids the generation of explosion accident, and improving temperature controlled safe valve body (1) makes
Safety.It is equipped on the inside of electromagnet functional module (6) electromagnetic coil (8), the middle part peace of electromagnet functional module (6)
Equipped with iron core (9), the two sides of iron core (10) bottom end are equipped with circlip (11)；The inside of function of temperature control module (5) is equipped with temperature-sensitive
Element (19) is used temperature shape memory alloy as temperature-sensing element (19), is become when the temperature rises using temperature-sensing element (19)
The thrust that shape generates, driving part is mobile, and when environment temperature reaches 60 DEG C ± 3 DEG C, temperature-sensing element (19) is since temperature raises
Increase deformation and generate longitudinal thrust, under the active force of longitudinal thrust, temperature-sensing element (19) push solenoid valve base (10) to
Upper movement, since solenoid valve base (10) is connected as one with housing (16), so housing (16) can be with solenoid valve bottom
The movement of seat (10) and move up together, due to the active force of interior external magnet, interior first magnet (12) can together with inner valve stem (13) and
Valve port pad (14) moves down, and under the additional forces of spring (15), valve port pad (14) leads to temperature controlled safe valve body (1)
Road cutting, gas source are cut off, and sensitive efficiently complete self-operated type acts, and are avoided the generation of explosion accident, are improved temperature controlled safe
The safety that valve body (1) uses.The inside of housing (16) is equipped with the second magnet (12) and circlip (18), function of temperature control module
(5) it is mounted on the outside of the outer valve rod (4), the inside of outer valve rod (4) is equipped with valve rod (13), the top installation of valve rod (13)
Have the first magnet (12), the bottom end of valve rod (13) is equipped with valve port pad (14)；One end of temperature controlled safe valve body (1) is equipped with out
Gas channel (3), the other end of temperature controlled safe valve body (1) are equipped with inlet channel (2).
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of natural gas temperature-control safety valve, including temperature controlled safe valve body (1), inlet channel (2), outlet passageway (3), outer valve
Bar (4), function of temperature control module (5), electromagnet functional module (6), solenoid valve casing (7), the first magnet (12), valve rod (13),
Valve port pad (14), spring (15), housing (16), the second magnet (12), circlip (18), gasket (20), it is characterised in that: the temperature
The side for controlling safe valve body (1) is equipped with the function of temperature control module (5), the top setting of the function of temperature control module (5)
There is the electromagnet functional module (6), electromagnetic coil (8), electromagnet function are installed on the inside of the electromagnet functional module (6)
Cored (9) are installed at the middle part of energy module (6), and the two sides of iron core (9) bottom end are equipped with circlip (11), the function of temperature control module
(5) inside is equipped with temperature-sensing element (19), and housing (16) is coaxially disposed in the upper end of outer valve rod (4), the inside of housing (16)
Equipped with second magnet (12) and the circlip (18), the function of temperature control module (5) is mounted on the outer of the outer valve rod (4)
Portion, housing (16) top, the inside of the outer valve rod (4) is equipped with the valve rod (13), the top peace of the valve rod (13)
Equipped with first magnet (12), the bottom end of the valve rod (13) is equipped with the valve port pad (14)；The temperature-control safety valve sheet
One end of body (1) is equipped with the outlet passageway (3), and the other end of the temperature controlled safe valve body (1) is equipped with the air inlet
Channel (2).
2. natural gas temperature-control safety valve according to claim 1, it is characterised in that: temperature-sensing element (19) is remembered by temperature shape
Recall alloy block composition.
3. natural gas temperature-control safety valve according to claim 1, it is characterised in that: the temperature controlled safe valve body (1)
Outside is equipped with fuel gas alarm, and the fuel gas alarm includes an action signal output end, the action signal
It is connect between output end and the control terminal of electromagnet functional module (6) by control line.
4. natural gas temperature-control safety valve according to claim 1, it is characterised in that: the temperature controlled safe valve body (1) is
It is integrally formed.
5. natural gas temperature-control safety valve according to claim 1, it is characterised in that: pass through institute inside and outside temperature controlled safe valve body
Outer valve rod (4) isolation is stated, except function of temperature control module (5) and electromagnet functional module (6) are independently of temperature controlled safe valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811597301.1A CN109519578A (en) | 2018-12-26 | 2018-12-26 | A kind of natural gas temperature-control safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811597301.1A CN109519578A (en) | 2018-12-26 | 2018-12-26 | A kind of natural gas temperature-control safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109519578A true CN109519578A (en) | 2019-03-26 |
Family
ID=65796900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811597301.1A Withdrawn CN109519578A (en) | 2018-12-26 | 2018-12-26 | A kind of natural gas temperature-control safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109519578A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD253859A1 (en) * | 1986-11-24 | 1988-02-03 | Mertik Veb | CONTROL VALVE WITH A HAND ADJUSTING DEVICE |
| CN1061464A (en) * | 1987-04-03 | 1992-05-27 | 轨道动力机专卖有限公司 | Improved apparatus for delivering fuel to internal combustion engine |
| CN2535619Y (en) * | 2002-02-28 | 2003-02-12 | 李志辉 | Combustible gas safety electromagnetic valve |
| CN2660242Y (en) * | 2002-11-21 | 2004-12-01 | 刘红梅 | Temp control valve |
| WO2017096515A1 (en) * | 2015-12-08 | 2017-06-15 | 山东博日明能源科技有限公司 | Self-actuated emergency shut-off valve |
| CN109084077A (en) * | 2018-10-30 | 2018-12-25 | 上海喆焰能源科技有限公司 | A kind of liquefied gas temperature-control safety valve |
-
2018
- 2018-12-26 CN CN201811597301.1A patent/CN109519578A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD253859A1 (en) * | 1986-11-24 | 1988-02-03 | Mertik Veb | CONTROL VALVE WITH A HAND ADJUSTING DEVICE |
| CN1061464A (en) * | 1987-04-03 | 1992-05-27 | 轨道动力机专卖有限公司 | Improved apparatus for delivering fuel to internal combustion engine |
| CN2535619Y (en) * | 2002-02-28 | 2003-02-12 | 李志辉 | Combustible gas safety electromagnetic valve |
| CN2660242Y (en) * | 2002-11-21 | 2004-12-01 | 刘红梅 | Temp control valve |
| WO2017096515A1 (en) * | 2015-12-08 | 2017-06-15 | 山东博日明能源科技有限公司 | Self-actuated emergency shut-off valve |
| CN109084077A (en) * | 2018-10-30 | 2018-12-25 | 上海喆焰能源科技有限公司 | A kind of liquefied gas temperature-control safety valve |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190326 |