CN107887041A - Nuclear power plant main pipeline temperature measuring equipment - Google Patents
Nuclear power plant main pipeline temperature measuring equipment Download PDFInfo
- Publication number
- CN107887041A CN107887041A CN201711082506.1A CN201711082506A CN107887041A CN 107887041 A CN107887041 A CN 107887041A CN 201711082506 A CN201711082506 A CN 201711082506A CN 107887041 A CN107887041 A CN 107887041A
- Authority
- CN
- China
- Prior art keywords
- main pipeline
- power plant
- measuring equipment
- measurement portion
- nuclear power
- 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
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
- G21C17/022—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of Nuclear power plant main pipeline temperature measuring equipment, it includes：Located at the pressure inlet of main pipeline, including the measurement portion inside main pipeline of interconnection and the fixed part on main pipeline tube wall；And nuclear grade platinum resistance fast-response thermometer, it is plugged in fixed part, including temperature probe；Wherein, temperature probe is located in measurement portion, and measurement portion is provided with inlet opening and apopore, the cooling agent of main pipeline is flowed into measurement portion from inlet opening contact with temperature probe after from apopore outflow.Relative to prior art, Nuclear power plant main pipeline temperature measuring equipment of the present invention has advantages below：By setting at least one pressure inlet on the same cross section of main pipeline, to measure the temperature of cooling agent in main pipeline, simplify main pipeline thermometric pipeline, nuclear island arrangement space is saved, the change of main pipeline tested segment temperature can not only directly quick, be truly measured, and slow down impact of the cooling agent to nuclear grade platinum resistance fast-response thermometer.
Description
Technical field
The invention belongs to technical field of nuclear power, it is more particularly related to a kind of Nuclear power plant main pipeline temperature measuring equipment.
Background technology
In nuclear power station, cooling agent is used to take away heat in reactor in main pipeline, and is delivered to secondary side steam generation
Device, the temperature of main pipeline cooling agent not only play an important role to the temperature for controlling reactor-loop, and to nuclear power generating sets
Normal operation and monitoring have very important effect.By setting narrow range temperature measuring equipment, energy on main pipe hot leg
The temperature (also referred to as main pipe hot leg temperature) of enough quick measurement main pipe hot leg cooling agents.
At present, prior art measures main pipeline by setting narrow range temperature measuring equipment on main pipeline to reach quick
The purpose of coolant temperature.For the narrow range temperature survey of main pipeline mainly using bypass temp measuring method, bypass temp measuring method is in master
Three thermometrics are set to bypass pressure inlet on pipeline, during normal reactor operation, from one time of reactor pressure vessel outflow
Road cooling agent part bypasses pressure inlet by thermometric and flows into bypass adapter line, and the coolant flow after mixing is through being located at thermometric shunt valve
Thermometric fast-response thermometer on line, the temperature of main pipeline cooling agent is measured, and then realize the temperature of control reactor-loop.
But there is problems with existing bypass temp measuring method：
First, using by-pass line temperature measurement structure, main pipeline auxiliary piping is added, occupies arrangement space, is increased
Operation and the cost safeguarded, turn into potential source of leakage；Further, since measured primary Ioops cooling agent is drawn from main pipeline
And thermometric by-pass line is flow to, in the coolant temperature and main pipeline measured there is deviation in the true temperature of cooling agent, has and prolongs
Chi Xing.
In view of this, it is necessory to provide a kind of core simple in construction, testing efficiency is high, simple in construction, testing efficiency is high
Power station main pipeline temperature measuring equipment.
The content of the invention
It is an object of the invention to：The defects of overcoming prior art, there is provided one kind is simple in construction, testing efficiency is high, structure
Simply, the high Nuclear power plant main pipeline temperature measuring equipment of testing efficiency.
To achieve these goals, the invention provides a kind of Nuclear power plant main pipeline temperature measuring equipment, it includes：
Located at the pressure inlet of main pipeline, including the measurement portion inside main pipeline of interconnection and located at supervisor's deferent
Fixed part on wall；And
Nuclear grade platinum resistance fast-response thermometer, is plugged in fixed part, including temperature probe；
Wherein, temperature probe is located in measurement portion, and measurement portion is provided with inlet opening and apopore, and cooling agent flows from inlet opening
Enter and flowed out after being contacted in measurement portion with temperature probe from apopore.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, the pressure inlet and the main pipeline one into
Type or the pressure inlet are fixedly connected on the main pipeline.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the measurement portion is the tubulose knot of one end closing
Structure.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the measurement portion is included close to main pipeline axis
Blind end and close to the openend of main pipeline tube wall, the diameter of the outer wall of measurement portion from blind end to openend gradually increases.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the fixed part is provided with cavity, the opening
End is connected with cavity, and the nuclear grade platinum resistance fast-response thermometer is plugged in cavity and contacted with flowing into the cooling agent of measurement portion.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and described measurement portion the same side is provided with multiple water inlets
Hole, in inlet opening the flow direction vector of cooling agent with the flow direction vector of cooling agent in main pipeline in -35 °~35 ° settings.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the junction of the measurement portion and fixed part is set
Have an apopore, in apopore the flow direction vector of cooling agent with the flow direction vector of cooling agent in main pipeline in 30 °~60 ° settings.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the nuclear grade platinum resistance fast-response thermometer is close
Envelope is connected to fixed part.
As Nuclear power plant main pipeline temperature measuring equipment of the present invention one kind improve, the nuclear grade platinum resistance fast-response thermometer with
Fixed part is connected through a screw thread, and the outer surface of threaded connection place passes through welded seal.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the inlet opening and apopore are oppositely arranged,
The inlet opening and apopore are located at the both sides of measurement portion respectively.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and described measurement portion the same side is provided with five water inlets
Hole, in five inlet openings the flow direction vector of cooling agent and the flow direction vector of cooling agent in main pipeline from blind end to openend successively
In 30 °, 15 °, 0 °, -15 °, -30 ° of settings.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the inlet opening is cylindrical hole, the cylinder
A diameter of 6~10mm in hole.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the side of the measurement portion is provided with and inlet opening
Corresponding apopore, apopore are located at the junction of measurement portion and fixed part, in apopore the flow direction vector of cooling agent with it is main
The flow direction vector of cooling agent is in 45 ° of settings in pipeline.
One kind as Nuclear power plant main pipeline temperature measuring equipment of the present invention is improved, and the apopore is cylindrical hole, the cylinder
A diameter of 14~18mm in hole.
Relative to prior art, Nuclear power plant main pipeline temperature measuring equipment of the present invention has the advantages that：By being responsible for
At least one pressure inlet is set on the same cross section in road, pressure inlet rear end is tightly connected with nuclear grade platinum resistance fast-response thermometer,
From reactor pressure vessel outflow primary Ioops cooling agent part flow into pressure inlet in mix, and with nuclear grade platinum resistance fast-response temperature
The temperature probe contact of degree meter, to measure the temperature of cooling agent in main pipeline, simplifies main pipeline thermometric pipeline, has saved nuclear island
Arrangement space, the change of main pipeline tested segment temperature can directly quick, be truly measured, also slow down cooling agent to core level platinum
The impact of resistance fast-response thermometer.
Brief description of the drawings
With reference to the accompanying drawings and detailed description, Nuclear power plant main pipeline temperature measuring equipment of the present invention and its Advantageous are imitated
Fruit is described in detail, wherein：
Fig. 1 be Nuclear power plant main pipeline temperature measuring equipment of the present invention in along A flow direction partial schematic sectional view (A is cooling agent
Flow direction).
Fig. 2 is Fig. 1 close-up schematic view.
Fig. 3 is the assembling schematic diagram of main pipeline and pipe nipple in Nuclear power plant main pipeline temperature measuring equipment of the present invention.
Wherein, reference is described as follows：
The inlet opening of 10 main pipeline 210
The apopore of 20 pressure inlet 212
The nuclear grade platinum resistance fast-response thermometer of 202 measurement portion 30
The temperature probe of 204 fixed part 302
Embodiment
In order that the purpose of the present invention, technical scheme and its advantageous effects become apparent from, below in conjunction with accompanying drawing and tool
Body embodiment, the present invention will be described in further detail.It should be appreciated that the specific embodiment party described in this specification
Formula is not to limit the present invention just for the sake of explaining the present invention.
Refer to shown in Fig. 1 to Fig. 3, Nuclear power plant main pipeline temperature measuring equipment of the present invention includes：
Located at the pressure inlet 20 of main pipeline 10, including the measurement portion 202 inside main pipeline 10 of interconnection with set
Fixed part 204 on the tube wall of main pipeline 10；And
Nuclear grade platinum resistance fast-response thermometer 30, is plugged in fixed part 204, including temperature probe 302；
Wherein, temperature probe 302 is located in measurement portion 202, and measurement portion 202 is provided with inlet opening 210 and apopore 212,
The cooling agent of main pipeline 10 flows out after being contacted out of the inflow of inlet opening 210 measurement portion 202 with temperature probe 302 from apopore 212.
According to an embodiment of the invention, inlet opening 210 and apopore 212 are oppositely arranged, inlet opening 210 and water outlet
Hole 212 is located at the both sides of measurement portion 202 respectively.
According to an embodiment of the invention, pressure inlet 20 is integrally formed with main pipeline 10 or pressure inlet 20 is fixedly connected
In main pipeline 10.
According to an embodiment of the invention, measurement portion 202 is the tubular structure of one end closing, and measurement portion 202 includes
Close to the blind end of main pipeline 10 axis and close to the openend of the tube wall of main pipeline 10, the outer wall of measurement portion 202 from blind end to
The diameter of openend gradually increases, and fixed part 204 is provided with cavity, and the openend of measurement portion 202 is connected with cavity, nuclear grade platinum resistance
Fast-response thermometer 30 is plugged in cavity and the cooling agent with flowing into measurement portion 202 contacts, nuclear grade platinum resistance fast-response temperature
Meter 30 is sealedly attached to fixed part 204.
In the embodiment shown in Fig. 1 to Fig. 3, in the same cross section of main pipeline 10 be provided with four be evenly arranged connect
Ozzle 20, pressure inlet 20 are connected with main pipeline 10 using complete penetraction and fusion in welding form, and the axis and horizontal plane shape of each pressure inlet 20 are at 45 °
Angle.Measurement portion 202 is on same axis with fixed part 204, in inlet opening 210 in the flow direction vector and main pipeline 10 of cooling agent
The flow direction vector of cooling agent is set in -35 °~35 °, the flow direction vector of cooling agent and cooling agent in main pipeline 10 in apopore 210
Flow direction vector in 30 °~60 ° settings, the temperature probe 302 of nuclear grade platinum resistance fast-response thermometer 30 more leans on than apopore 212
The blind end of nearly measurement portion 202, to ensure that enough cooling agents into measurement portion 202 contact with temperature probe 302.Measurement
The same side of portion 202 is provided with five inlet openings 210, and the flow direction vector of cooling agent in main pipeline 10 with cooling down in five inlet openings 210
The flow direction vector of agent from blind end to openend successively in 30 °, 15 °, 0 °, -15 °, -30 ° of settings, distinguish by five inlet openings 210
It is a diameter of 6~10mm cylindrical hole.The side of measurement portion 202 is provided with the apopore 212 corresponding with inlet opening 210, water outlet
Hole 212 is located at the junction of measurement portion 202 and fixed part 204, in apopore 212 the flow direction vector of cooling agent with main pipeline 10
For the flow direction vector of cooling agent in 45 ° of settings, apopore 212 is a diameter of 14~18mm cylindrical hole.Nuclear grade platinum resistance fast-response
Thermometer 30 includes signal cable (not shown), and nuclear grade platinum resistance fast-response thermometer 30 is plugged in the cavity of fixed part 204,
The temperature probe of nuclear grade platinum resistance fast-response thermometer 30 is located at the openend of measurement portion 202, the cooling with flowing into measurement portion 202
Agent is contacted, and pressure inlet 20 is connected through a screw thread with nuclear grade platinum resistance fast-response thermometer 30, and surface is using close after threaded connection
Soldering and sealing is handled.
Below in conjunction with the workflow that Nuclear power plant main pipeline temperature measuring equipment of the present invention shown in Fig. 1 to Fig. 3, is described in detail：
At least one pressure inlet 20 is provided with 10 same cross section of main pipeline, pressure inlet 20 is integrally formed with main pipeline 10
Or pressure inlet 20 is fixedly connected on main pipeline 10, pass through inlet opening from the primary Ioops cooling agent part of reactor pressure vessel outflow
210 enter pressure inlet 20 and are back to main pipeline 10 from apopore 212, and the cooling agent into pressure inlet 20 mixes rear and core level platinum
The temperature probe 302 of resistance fast-response thermometer 30 contacts, and measures the temperature of cooling agent in main pipeline 10.
By above description, relative to prior art, Nuclear power plant main pipeline temperature measuring equipment of the present invention has and following had
Beneficial effect：By setting at least one pressure inlet 20, the fixed part 204 and core of pressure inlet 20 on 10 same cross section of main pipeline
Grade platinum resistance fast-response thermometer 30 is tightly connected, and adapter is flowed into from the primary Ioops cooling agent part of reactor pressure vessel outflow
Mix in mouth 20, and contacted with the temperature probe 302 of nuclear grade platinum resistance fast-response thermometer 30, cooled down with measuring in main pipeline 10
The temperature of agent, simplify the thermometric pipeline of main pipeline 10, saved nuclear island arrangement space, can it is directly quick, truly measure
The change of the tested segment temperature of main pipeline 10, it also slow down impact of the cooling agent to nuclear grade platinum resistance fast-response thermometer 30.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, the invention is not limited in embodiment disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.In addition, although this specification
In used some specific terms, but these terms are merely for convenience of description, do not form any restrictions to the present invention.
Claims (15)
- A kind of 1. Nuclear power plant main pipeline temperature measuring equipment, it is characterised in that including：Located at the pressure inlet of main pipeline, including the measurement portion inside main pipeline of interconnection and on main pipeline tube wall Fixed part；AndNuclear grade platinum resistance fast-response thermometer, is plugged in fixed part, including temperature probe；Wherein, the temperature probe is located in measurement portion, and the measurement portion is provided with inlet opening and apopore, the cooling of main pipeline Agent is flowed out after being contacted out of inlet opening inflow measurement portion with temperature probe from apopore.
- 2. Nuclear power plant main pipeline temperature measuring equipment according to claim 1, it is characterised in that the pressure inlet and the supervisor Road is integrally formed or the pressure inlet is fixedly connected on the main pipeline.
- 3. Nuclear power plant main pipeline temperature measuring equipment according to claim 1, it is characterised in that the measurement portion is closed for one end Tubular structure.
- 4. Nuclear power plant main pipeline temperature measuring equipment according to claim 3, it is characterised in that the measurement portion is included close to main The blind end of conduit axis and close to the openend of main pipeline tube wall, the diameter of the outer wall of measurement portion from blind end to openend by It is cumulative big.
- 5. Nuclear power plant main pipeline temperature measuring equipment according to claim 4, it is characterised in that the fixed part is provided with cavity, The openend is connected with cavity.
- 6. Nuclear power plant main pipeline temperature measuring equipment according to claim 5, it is characterised in that the nuclear grade platinum resistance fast-response Contacted in thermometer insertion cavity with flowing into the cooling agent of measurement portion.
- 7. Nuclear power plant main pipeline temperature measuring equipment according to claim 1, it is characterised in that described measurement portion the same side is provided with Multiple inlet openings, in inlet opening the flow direction vector of cooling agent with the flow direction vector of cooling agent in main pipeline in -35 °~35 ° settings.
- 8. Nuclear power plant main pipeline temperature measuring equipment according to claim 1, it is characterised in that the measurement portion and fixed part Junction is provided with apopore, and the flow direction vector of the flow direction vector of cooling agent and cooling agent in main pipeline is in 30 °~60 ° in apopore Set.
- 9. Nuclear power plant main pipeline temperature measuring equipment according to claim 1, it is characterised in that the nuclear grade platinum resistance fast-response Thermometer is sealedly attached to fixed part.
- 10. Nuclear power plant main pipeline temperature measuring equipment according to claim 9, it is characterised in that the nuclear grade platinum resistance rings soon Thermometer is answered to be connected through a screw thread with fixed part, the outer surface of threaded connection place passes through welded seal.
- 11. Nuclear power plant main pipeline temperature measuring equipment according to claim 1, it is characterised in that the inlet opening and apopore It is oppositely arranged, the inlet opening and apopore are respectively positioned at the both sides of measurement portion.
- 12. Nuclear power plant main pipeline temperature measuring equipment according to claim 1, it is characterised in that described measurement portion the same side is set Have five inlet openings, in five inlet openings the flow direction vector of cooling agent and the flow direction vector of cooling agent in main pipeline from blind end to Openend is successively in 30 °, 15 °, 0 °, -15 °, -30 ° of settings.
- 13. Nuclear power plant main pipeline temperature measuring equipment according to claim 12, it is characterised in that the inlet opening is cylinder Hole, a diameter of 6~10mm of the cylindrical hole.
- 14. Nuclear power plant main pipeline temperature measuring equipment according to claim 12, it is characterised in that the side of the measurement portion is set There is an apopore corresponding with inlet opening, apopore is located at the junction of measurement portion and fixed part, the stream of cooling agent in apopore Set to the flow direction vector of vector and cooling agent in main pipeline in 45 °.
- 15. Nuclear power plant main pipeline temperature measuring equipment according to claim 15, it is characterised in that the apopore is cylinder Hole, a diameter of 14~18mm of the cylindrical hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082506.1A CN107887041A (en) | 2017-11-07 | 2017-11-07 | Nuclear power plant main pipeline temperature measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082506.1A CN107887041A (en) | 2017-11-07 | 2017-11-07 | Nuclear power plant main pipeline temperature measuring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107887041A true CN107887041A (en) | 2018-04-06 |
Family
ID=61779196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711082506.1A Pending CN107887041A (en) | 2017-11-07 | 2017-11-07 | Nuclear power plant main pipeline temperature measuring equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN107887041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267261A (en) * | 2021-06-21 | 2021-08-17 | 中国原子能科学研究院 | Protection structure and temperature measurement subassembly of temperature measuring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61260193A (en) * | 1985-05-15 | 1986-11-18 | 三菱原子力工業株式会社 | Measuring device for temperature of coolant |
| US5229065A (en) * | 1990-12-28 | 1993-07-20 | Framatome | Method and device for measuring the temperature of the primary coolant fluid of nuclear reactor |
| CN1912557A (en) * | 2006-08-15 | 2007-02-14 | 孙文忠 | Small inert IE grade platinum resistance thermometer |
| CN200972417Y (en) * | 2006-10-31 | 2007-11-07 | 上海自动化仪表股份有限公司 | Nut small inertia thermal cover platinum resistance thermometer |
| CN203024879U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Temperature measurement filler neck for main pipes |
| CN204242603U (en) * | 2014-11-11 | 2015-04-01 | 中科华核电技术研究院有限公司 | Hot channel temperature survey sleeve pipe |
| CN106816190A (en) * | 2015-12-02 | 2017-06-09 | 中广核工程有限公司 | Nuclear power plant reactor main pipeline coolant temperature measuring system and method |
-
2017
- 2017-11-07 CN CN201711082506.1A patent/CN107887041A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61260193A (en) * | 1985-05-15 | 1986-11-18 | 三菱原子力工業株式会社 | Measuring device for temperature of coolant |
| US5229065A (en) * | 1990-12-28 | 1993-07-20 | Framatome | Method and device for measuring the temperature of the primary coolant fluid of nuclear reactor |
| CN1912557A (en) * | 2006-08-15 | 2007-02-14 | 孙文忠 | Small inert IE grade platinum resistance thermometer |
| CN200972417Y (en) * | 2006-10-31 | 2007-11-07 | 上海自动化仪表股份有限公司 | Nut small inertia thermal cover platinum resistance thermometer |
| CN203024879U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Temperature measurement filler neck for main pipes |
| CN204242603U (en) * | 2014-11-11 | 2015-04-01 | 中科华核电技术研究院有限公司 | Hot channel temperature survey sleeve pipe |
| CN106816190A (en) * | 2015-12-02 | 2017-06-09 | 中广核工程有限公司 | Nuclear power plant reactor main pipeline coolant temperature measuring system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267261A (en) * | 2021-06-21 | 2021-08-17 | 中国原子能科学研究院 | Protection structure and temperature measurement subassembly of temperature measuring device |
| CN113267261B (en) * | 2021-06-21 | 2022-06-28 | 中国原子能科学研究院 | Protection structure and temperature measurement component of temperature measurement device |
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Application publication date: 20180406 |
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