CN105081705B - The preparation method of high pressure nitrogen spheric holder - Google Patents
The preparation method of high pressure nitrogen spheric holder Download PDFInfo
- Publication number
- CN105081705B CN105081705B CN201510594928.1A CN201510594928A CN105081705B CN 105081705 B CN105081705 B CN 105081705B CN 201510594928 A CN201510594928 A CN 201510594928A CN 105081705 B CN105081705 B CN 105081705B
- Authority
- CN
- China
- Prior art keywords
- test
- pressure
- lower hemisphere
- heat treatment
- forging
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The present invention relates to a kind of preparation method of high pressure nitrogen spheric holder.Comprise the steps：--- --- --- --- --- --- assembling of manhole cover --- general assembly and frock --- is heat-treated and pressure test for the secondary operation of manhole and adapter postwelding for forging machining for the outer committee shaping of upper and lower hemisphere for the blanking requirement of upper and lower hemisphere for the blanking unfolding calculation of upper and lower hemisphere for the setting of upper and lower hemisphere wall thickness.Solve and process many difficult points existing for spheric holder technique in the prior art.
Description
Technical field
The present invention relates to a kind of preparation method of nitrogen basin, more particularly to a kind of preparation side of high pressure nitrogen spheric holder
Method.
Background technology
High pressure nitrogen basin normally shape has tubular and spherical two kinds, and high pressure nitrogen basin presented here generally refers to
High pressure nitrogen spheric holder.High-pressure bottle is mainly used in special industry, is the equipment for needing particular pressure, has voltage stabilizing, buffering,
The effect such as water removal.High-pressure bottle is different from general steel vessel, and its application is not extensive, be only applied to war industry gun barrel,
Nuclear power unit and chemical industry, the high-pressure buffer and nuclear reactor, the electric storage means of storage and power industry of petroleum industry synthetic reaction
Deng.But prior art, the critical technological point of processing high pressure nitrogen spheric holder is more, and major embodiment is as follows：
1. the setting of wall thickness；
2. the expansion of upper and lower hemisphere；
3. the secondary operation of manhole and adapter postwelding；
4. the assembling of manhole cover；
5. general assembly and self-made tooling；
6. heat treatment and pressure test.
The content of the invention
The present invention is directed to above-mentioned problems of the prior art, there is provided a kind of preparation side of high pressure nitrogen spheric holder
Method, solve the problems, such as that processing spheric holder critical technological point is more in the prior art.
The preparation method of the present invention comprises the steps：
Step 1, the setting of upper and lower hemisphere wall thickness：
Upper and lower hemisphere thickness of steel product adds finish allowance equal to nominal thickness, and upper and lower hemispherical head finish allowance is end socket
The reduction of forming thickness, reduction are the 13%~14% of steel plate nominal thickness；
Step 2, the blanking radius of upper and lower hemisphere：
Theoretical value adds technique additional amount, and hemisphere cake blanking radius formula is：
R=1.414r+2 δ n (nominal thickness)+50mm
Step 3, the blanking requirement of upper and lower hemisphere：
(1) it is not allow for crackle first to carrying out super spy outside four side 50mm of whole plate before upper and lower hemisphere expansion line, divides
The defects of layer, it can be carried out after confirmation to be tested, bulb first draws center line when ruling in sheet material, then marks again outside biscuit
Circle, pays attention to conceding 50mm away from sheet material edge；
(2) when using gas flame cuttiug blanking, slag and objectionable impurities should be removed, and uses emery wheel or other instruments by periphery
Process smooth, expose metallic luster, need to be preheating to 125 DEG C before gas flame cuttiug；
Step 4, the outer committee shaping of upper and lower hemisphere：
(1) hemispherical head HHA is according to GB/T25198-2010《Pressure vessel head》Standard press is molded, and does not allow to spell
Seam；Need to carry out normalizing heat treatment after hemispherical head shaping, and have the mother metal heat treatment of heating technique identical with hemispherical head
Test plate (panel)；The Magnetic testing of surface 100% is carried out after hemispherical head shaping, provides that evaluation rank is I according to JB/T4730.4-2005
Level is qualified；
(2) during all retaining wall on slope, according to JB/T4730.3-2005 regulations 100% surpass at groove preset lines 100mm
Sound wave inspection, flawless, slag inclusion, crackle；100% Magnetic testing is carried out according to JB/T4730.4-2005 after retaining wall on slope, nothing is split
Line；
Step 5, forging is machined：
Forging should meet III grade of requirement of NB/T47008-2010 defineds, and groove is carried out by JB/T4730.5-2005
100% infiltration/Magnetic testing, I grade qualified；Forging to carry out stretching and Charpy (v-notch) impact test (0 DEG C) AKv >=
34J；100% ultrasound examination is carried out after forging roughing, II grade qualified；JB/T4730.5- is pressed on surface after forging process
2005 carry out 100% infiltration/Magnetic testing, and I grade qualified；
Step 6, the secondary operation of manhole and adapter postwelding：
According to GB150 and HG/T20583 requirements, tank body reserves secondary operation allowance with manhole or adapter group postwelding；
Step 7, the assembling of manhole cover：
Need to load manhole cover in episphere before upper and lower hemisphere general assembly, advanced pedestrian's port lid prepackage, pre-installed position determines
Afterwards, journal stirrup is positioned and welded with episphere, then again remove all connectors of manhole cover, treat upper and lower hemisphere general assembly simultaneously
After being heat-treated, after the sandblasting of dress tank inner surface, derusting, cleaning out, then all manhole cover parts are assembled again,
It is ready for the pressure test of subsequent processing；
Step 8, general assembly：
Upper and lower hemisphere carries out general assembly；
Step 9, heat treatment and pressure test：
(1) during bulk heat treatmet, the anti-oxidation class paste of graphite is smeared to flange sealing surface, sealing surface is rushed with water after heat treatment
Wash clean；
(2) pressure test
During the water pressure test, safety valve is not installed, relief valve port is closed with technique plug, airtight after the water pressure test terminates
Property experiment before safety valve is installed again, progress air-tight test；Hydraulic test pressure：20.63MPa, fluid temperature are 5 DEG C；Gas
Tightness test pressure：16MPa.
Advantages of the present invention effect is as follows：
1. accurately calculate the setting of the wall thickness to feed intake；
2. accurately calculate the expansion of upper and lower hemisphere；
3. accurately complete the secondary operation of manhole and adapter postwelding；
4. accurately complete the assembling of manhole cover；
5. accurately complete general assembly and self-made tooling；
6. accurately complete heat treatment and pressure test.
Brief description of the drawings
Fig. 1 is the structural representation of tun of the present invention.
Fig. 2 is Fig. 1 overlooking the structure diagram.
Embodiment
Referring to the drawings, the present invention is described in detail.
The technology of the present invention parameter setting is as follows：
Step 1, the setting of upper and lower hemisphere wall thickness：
Thickness is the most important structural parameters of pressure vessel, is under defined load-up condition, ensures structural strength and knot
One of primary condition of structure rigidity and service life.Five kinds of thickness are defined in GB150, and designs and leads in drawings marked
Often finish allowance, hemispherical are added to the nominal thickness and design thickness for only going out container wall thickness, thickness of steel product equal to nominal thickness
End socket finish allowance is that seal head forming thickness thinning rate is usually the 13%~14% of steel plate thickness, and the present embodiment is with design drawing
Given nominal thickness is 50mm, exemplified by radius r is 1000mm.
Reduction thickness 50mm × 0.13=6.5mm；
Draw steel plate Raising directly=nominal thickness 50mm+ reduction thickness 6.5mm=56.5mm；
Thickness of steel product is 57mm after rounding；Because market does not have 57mm thick steel products；
Thickness of steel product is 58mm after secondary rounding.
Step 2, the blanking unfolding calculation of upper and lower hemisphere：
The blanking unfolding calculation of dome head is as follows.
Sphere area：4πr2=π D2
Hemisphere area：4πr2÷ 2=2 π r2
Hemisphere cake area：S=π R2That is hemisphere cake area：S=π R2=2 π r2
∴ hemisphere cake radiuses R=1.414r=1.414 × 1000=1414
But this is simply by the theoretical value that provides of calculating, it is impossible to as the blank size in produce reality, also to add
The additional amount that upper technique is given just can guarantee that the overall dimensions of hemispherical head.Therefore hemisphere cake blanking radius formula is：
R=1.414r+2 δ n (nominal thickness)+50mm
∴ hemisphere cake blankings：R=1.414 × 1000+2 × 50+50 ≈ 1565mm.
Step 3, the blanking requirement of upper and lower hemisphere：
(1) it is not allow for crackle first to carrying out super spy outside four side 50mm of whole plate before upper and lower hemisphere expansion line, divides
The defects of layer, it can be carried out after confirmation to be tested, bulb first draws center line when ruling in sheet material, then marks again outside biscuit
Circle, pays attention to conceding 50mm away from sheet material edge.
(2) when using gas flame cuttiug blanking, slag and objectionable impurities should be removed, and uses emery wheel or other instruments by periphery
Process smooth, expose metallic luster, need to be preheating to 125 DEG C before gas flame cuttiug.
Step 4, the outer committee shaping of upper and lower hemisphere：
(1) hemispherical head HHA is according to GB/T25198-2010《Pressure vessel head》Standard press is molded, and does not allow to spell
Seam；Need to carry out normalizing heat treatment after hemispherical head shaping, and have the mother metal heat treatment of heating technique identical with hemispherical head
Test plate (panel)；The Magnetic testing of surface 100% is carried out after hemispherical head shaping, provides that evaluation rank is I according to JB/T4730.4-2005
Level is qualified.
(2) during all retaining wall on slope, according to JB/T4730.3-2005 regulations 100% surpass at groove preset lines 100mm
Sound wave inspection, flawless, slag inclusion, crackle.100% Magnetic testing is carried out according to JB/T4730.4-2005 after retaining wall on slope, nothing is split
Line.
Step 5, forging is machined：
Forging should meet III grade of requirement of NB/T47008-2010 defineds, and groove is carried out by JB/T4730.5-2005
100% infiltration/Magnetic testing, I grade qualified；Forging to carry out stretching and Charpy (v-notch) impact test (0 DEG C) AKv >=
34J；100% ultrasound examination is carried out after forging roughing, II grade qualified；JB/T4730.5- is pressed on surface after forging process
2005 carry out 100% infiltration/Magnetic testing, and I grade qualified.
Step 6, the secondary operation of manhole and adapter postwelding：
According to GB150 and HG/T20583 requirements, tank body is also contemplated that secondary operation problem with manhole or adapter group postwelding.
By taking reinforcing plate and the weldering of episphere group as an example, consider to reserve secondary operation allowance from manufacturability：Reinforcing plate (manhole) and episphere
After welding, postwelding secondary operation is also carried out, technique is not required nothing more than so and is specially indicated in forging work order, also to be given
Go out preliminary working allowance.The main reason for postwelding secondary operation is the through welding structure for ensureing reinforcing plate (manhole) or adapter.
Step 7, the assembling of manhole cover：
Sealing structure is more special in high-pressure bottle, does not use common flange type of attachment, and uses following sealing
Form：
Need to load manhole cover in episphere before upper and lower hemisphere general assembly, advanced pedestrian's port lid prepackage, pre-installed position determines
Afterwards, journal stirrup is positioned and welded with episphere, then again remove all connectors of manhole cover, treat upper and lower hemisphere general assembly simultaneously
After being heat-treated, after the sandblasting of dress tank inner surface, derusting, cleaning out, then all manhole cover parts are assembled again,
It is ready for the pressure test of subsequent processing.
Step 8 general assembly and frock：
(1) group during general assembly is to size
Group is to gap：C=0+2
Unfitness of butt：b≤3.6mm
Angularity：E≤5.0mm
(2) frock
Ensure air inlet and the outgoing gas connection tube flange size and parallel with spherical tank main shaft stretched out, be easy to produce, effectively improve
Operating efficiency.
Step 9, heat treatment and pressure test：
(1) for prevent flange sealing surface because bulk heat treatmet be deformed, aoxidize the problems such as, must in bulk heat treatmet
Flange sealing surface must be protected, i.e., the anti-oxidation class paste of graphite, sealing surface water after heat treatment be smeared to flange sealing surface
Rinse well.To hardness requirement HB≤235 of weld seam, heat affected area and its connected mother metal after heat treatment；After equipment heat treatment
Must not welding.
(2) pressure test
The during pressure test it is noted that position that pressure gauge is laid, is then respectively placed at tank before two pieces of pressure watch tests of spherical tank
Top and each one piece of tank bottom, to observe the position of pressure change.
The pressure meter accuracy that high-pressure bottle uses is 1.6 grades, a diameter of 100mm of dial plate, and pressure dial scale limiting value is
1.5~3.0 times of maximum working pressure, preferably from 2 times.During the water pressure test, safety valve is not installed, relief valve port is blocked up with technique
Head closing, after the water pressure test terminates, again installs safety valve before air-tight test, carries out air-tight test.
During experiment, if it find that abnormal voice, pressure decline, pressure parts substantially deform, paint flake, safety it is attached
Part failure, fastener damage or pilot system break down, pressure gauge indicated value it is inconsistent wait abnormality when, should stop immediately
Only test, and analyze reason.When having pressure inside container, any repairing must not be carried out to pressure parts and fastening bolt works.
Forbid collision and Knock test container under test pressure.Confirming in container the detachable pilot system in no pressure rear and interim
Annex.
Hydraulic test pressure：20.63MPa, fluid temperature are 5 DEG C；Air tight test pressure：16MPa.
Main pressurized element material of the present invention:Sheet material：Q345R (normalizing)/GB713-2008；Forging：16Mn Ⅲ/NB/
T47008-2010。
Main pressurized element sheet material should check plate surface quality and marking on materials one by one, should have steel mill's quality of materials to prove
Book；Steel plate should carry out ultrasound examination by JB/T4730.3-2005 one by one, and II grade qualified；With smelting heat (batch) number with III be heat-treated
Level forging composition is a collection of, and every batch is inspected by random samples one, carries out stretching and Charpy (v-notch) impact test (0 DEG C) AKv >=34J；III grade
Forging carries out ultrasound examination piece by piece, and II grade qualified.
Require that banjo fixing butt jointing answers total cross-section to penetrate during welding, the joint between adapter and housing uses complete penetraction and fusion in welding pattern.Weldering
The bar trade mark：
Between Q345R or 16Mn III and carbon steel (between pressure containing part)：E4315；
E5015 between low-alloy steel, between carbon steel (between nonpressure parts)：E4303；
Submerged automatic arc welding wire：H10Mn2, solder flux：SJ101.
Welding point Non-Destructive Testing:
A, B classes are carried out by JB/T4730.2-2005, detect length 100%, and qualified rank RT is not less than AB levels, II grade of conjunction
UT is carried out after lattice and MT, UT are not less than B levels, and I grade qualified.
D classes are carried out by JB/T4730.5-2005, and qualified MT, 100%, I grade of rank is qualified.The connection of manhole and episphere
Weld seam carries out UT, and UT is not less than B levels, and 100%, I grade qualified.
Claims (3)
1. the preparation method of high pressure nitrogen spheric holder, it is characterised in that comprise the steps：
Step 1, the setting of upper and lower hemisphere wall thickness, upper and lower hemisphere thickness of steel product adds finish allowance equal to nominal thickness, upper and lower
Hemispherical head finish allowance is the reduction of seal head forming thickness, and reduction is the 13%~14% of steel plate nominal thickness；
Step 2, the blanking radius of upper and lower hemisphere, theoretical value add technique additional amount, and hemisphere cake blanking radius formula is：R=
1.414r +2δn+50mm；
In formula, r is the radius of a ball, and δ n are nominal thickness；
Step 3, the blanking requirement of upper and lower hemisphere, first to surpassing outside four side 50mm of whole plate before upper and lower hemisphere expansion line
Visit, be not allow for crackle, lamination defect, can be carried out after confirmation to be tested, bulb first draws center line when ruling in sheet material, so
It is cylindrical to mark biscuit again afterwards, pays attention to conceding 50mm away from sheet material edge；
During using gas flame cuttiug blanking, slag and objectionable impurities should be removed, and periphery is processed using emery wheel or other instruments and put down
It is whole, expose metallic luster, need to be preheating to 125 DEG C before gas flame cuttiug；
Step 4, the shaping of upper and lower hemisphere, hemispherical head HHA is according to GB/T25198-2010《Pressure vessel head》Standard pressure
Type is made, does not allow piece；Need to carry out normalizing heat treatment after hemispherical head shaping, and process one piece of mother metal heat treatment examination simultaneously
Plate detects for observation, and parent heat treatment test plant uses identical heating technique with hemispherical head；Carried out after hemispherical head shaping
The Magnetic testing of surface 100%, provide that evaluation rank is I grade qualified according to JB/T4730.4-2005；
During all retaining wall on slope, 100% ultrasonic wave inspection of progress is provided according to JB/T4730.3-2005 at groove preset lines 100mm
Look into, flawless, slag inclusion, crackle；After retaining wall on slope 100% Magnetic testing, flawless are carried out according to JB/T4730.4-2005；
Step 5, forging is machined, and forging should meet III grade of requirement of NB/T47008-2010 defineds, and groove presses JB/
T4730.5-2005 carries out 100% infiltration/Magnetic testing, and I grade qualified；Forging will carry out stretching and the Charpy impact of v-notch tries
Test, Charpy-type test is carried out under the conditions of 0 DEG C, AKv >=34J；To carry out 100% ultrasound examination after forging roughing, II grade
It is qualified；Surface carries out 100% infiltration/Magnetic testing by JB/T4730.5-2005 after forging process, and I grade qualified；
Step 6, the secondary operation of manhole and adapter postwelding, according to GB150 and HG/T20583 requirements, tank body and manhole or adapter
Group postwelding reserves secondary operation allowance；
Step 7, the assembling of manhole cover, manhole cover is loaded in episphere before upper and lower hemisphere general assembly, advanced pedestrian's port lid prepackage,
After pre-installed position determines, journal stirrup is positioned and welded with episphere, then again removes all connectors of manhole cover, treat,
Lower semisphere general assembly and after being heat-treated, after whole tank inner surface sandblasting, derusting, cleaning out, then again by owner
Port lid part assembles, and is ready for the pressure test of subsequent processing；
Step 8, general assembly, upper and lower hemisphere carry out general assembly；
Step 9, heat treatment and pressure test, during bulk heat treatmet, the anti-oxidation class paste of graphite smeared flange sealing surface, at heat
Sealing surface is rinsed well with water after reason；During the water pressure test, safety valve is not installed, relief valve port is closed with technique plug, treats hydraulic pressure
After off-test, safety valve is installed again before air-tight test, carries out air-tight test；Hydraulic test pressure：20.63MPa liquid
Temperature is 5 DEG C；Air tight test pressure：16MPa.
2. the preparation method of high pressure nitrogen spheric holder according to claim 1, it is characterised in that in described step 9,
To hardness requirement HB≤235 of weld seam, heat affected area and its connected mother metal after heat treatment；Must not welding after equipment heat treatment.
3. the preparation method of high pressure nitrogen spheric holder according to claim 1, it is characterised in that in described step 9,
During pressure test, tank deck and each one piece of tank bottom are respectively placed at before two pieces of pressure watch tests of spherical tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594928.1A CN105081705B (en) | 2015-09-17 | 2015-09-17 | The preparation method of high pressure nitrogen spheric holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594928.1A CN105081705B (en) | 2015-09-17 | 2015-09-17 | The preparation method of high pressure nitrogen spheric holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105081705A CN105081705A (en) | 2015-11-25 |
| CN105081705B true CN105081705B (en) | 2017-12-22 |
Family
ID=54563512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510594928.1A Expired - Fee Related CN105081705B (en) | 2015-09-17 | 2015-09-17 | The preparation method of high pressure nitrogen spheric holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105081705B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342202A (en) * | 2018-11-22 | 2019-02-15 | 沈阳航天新光集团有限公司 | Visualize pressure-bearing test tool |
| CN109519541B (en) * | 2018-12-10 | 2023-12-12 | 航天晨光股份有限公司 | Built-in high-pressure manhole device and opening and closing operation method thereof |
| CN115673691B (en) * | 2022-11-16 | 2023-07-18 | 兰州空间技术物理研究所 | Propellant storage tank flange shape and mounting hole precision mounting guaranteeing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5659941A (en) * | 1991-02-01 | 1997-08-26 | Institut Francais Du Petrole | Process for manufacturing a light structure through the expansion of a metallic tank in an armored corrugated pipe |
| CN101417381A (en) * | 2008-11-05 | 2009-04-29 | 西安轨道交通装备有限责任公司 | Cylindrical shell sloping-bottom tank car body manufacture technique |
| CN102029503A (en) * | 2009-09-30 | 2011-04-27 | 西安轨道交通装备有限责任公司 | Method for forming right cone stainless steel tank |
| CN103600211A (en) * | 2013-12-06 | 2014-02-26 | 沈阳航天新光集团有限公司 | Preparation method of canister launcher |
| CN104191176A (en) * | 2014-08-25 | 2014-12-10 | 沈阳航天新光集团有限公司 | Method for manufacturing low-temperature flow weighing container |
-
2015
- 2015-09-17 CN CN201510594928.1A patent/CN105081705B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5659941A (en) * | 1991-02-01 | 1997-08-26 | Institut Francais Du Petrole | Process for manufacturing a light structure through the expansion of a metallic tank in an armored corrugated pipe |
| CN101417381A (en) * | 2008-11-05 | 2009-04-29 | 西安轨道交通装备有限责任公司 | Cylindrical shell sloping-bottom tank car body manufacture technique |
| CN102029503A (en) * | 2009-09-30 | 2011-04-27 | 西安轨道交通装备有限责任公司 | Method for forming right cone stainless steel tank |
| CN103600211A (en) * | 2013-12-06 | 2014-02-26 | 沈阳航天新光集团有限公司 | Preparation method of canister launcher |
| CN104191176A (en) * | 2014-08-25 | 2014-12-10 | 沈阳航天新光集团有限公司 | Method for manufacturing low-temperature flow weighing container |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105081705A (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101629912A (en) | Determination method of reliability of titanium welding seam of titanium steel composite board equipment | |
| CN105081705B (en) | The preparation method of high pressure nitrogen spheric holder | |
| CN109781754B (en) | Safety evaluation method for pipeline girth weld defects | |
| CN106624405B (en) | Method and system for repairing damage of tube plate and tube hole of steam generator of nuclear power station | |
| CN103506751A (en) | Method for welding vacuum electron beam of stainless steel cylinder body | |
| CN106270937A (en) | A kind of overlay cladding repair method | |
| CN109514056A (en) | A kind of assemble method of bellows component | |
| CN104191176B (en) | The preparation method of cryogenic flow weighing container | |
| CN108838573B (en) | Low-alloy steel and stainless steel composite repair welding method and system for nuclear power pressure vessel | |
| CN110542611A (en) | Equipment pressure test adapter tube and pressure test method | |
| CN102500886A (en) | High-strength nickel-iron-chromium alloy and chromium-nickel stainless steel plate welding method and application to preparation of polysilicon cold hydrogenation reactors | |
| CN111318851B (en) | Repair method for fillet weld of manhole neck joint of pressure vessel in nuclear power plant | |
| KR100509196B1 (en) | The method of lining of welding line for chemistry fluid tank made of high quality | |
| CN205504250U (en) | Double -deck leak -proof structure that follow -on zirconium or titanium metal clad sheet equipment were taken over | |
| CN106353116B (en) | The experimental cabin preparation method of closed thermal strength test system | |
| CN105689907A (en) | Assembly welding process for pressure vessel | |
| CN101403474A (en) | Security assessment method for pressure pipe containing incomplete fusion defect | |
| CN109764202A (en) | A kind of Bellows expansion section | |
| CN202100884U (en) | Bellows made from austenitic stainless steel and carbon steel composite board | |
| CN112045328B (en) | J-shaped welding seam repair method for pressure boundary of penetration piece of nuclear-grade pressure-bearing equipment | |
| CN109175898A (en) | Bearing device heavy caliber adapter tube hydraulic pressure surplus manufacturing method | |
| CN205137076U (en) | Spherical tank pillar is connected with double -deck U -shaped layer board structure with spherical shell | |
| CN109355105A (en) | A kind of segmented deslagging tank and its processing technology for high temperature and high pressure condition | |
| Focke et al. | The influence of the reeling installation method on the integrity of circumferential welds in tight fit pipe | |
| CN111337570B (en) | Ultrasonic flaw detection system for nuclear-grade stainless steel outer sleeve and flaw detection method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180212 Address after: 110043 Liaoning Province, Shenyang City District East Street No. 3 Patentee after: SHENYANG AEROSPACE XINGUANG PRESSURE VESSEL Co.,Ltd. Address before: 110043 Liaoning Province, Shenyang City District East Street No. 1 Patentee before: SHENYANG AEROSPACE XINGUANG GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |