CN106967870A - High temperature and high pressure steam valve sealing face scene burning optimization on line system - Google Patents
High temperature and high pressure steam valve sealing face scene burning optimization on line system Download PDFInfo
- Publication number
- CN106967870A CN106967870A CN201710289340.4A CN201710289340A CN106967870A CN 106967870 A CN106967870 A CN 106967870A CN 201710289340 A CN201710289340 A CN 201710289340A CN 106967870 A CN106967870 A CN 106967870A
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- Prior art keywords
- power supply
- heating power
- water
- medium frequency
- pressure steam
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a kind of live burning optimization on line system of high temperature and high pressure steam valve sealing face, it includes heating power supply in Medium frequency induction, Medium frequency induction external heat power supply, first water-cooling heating power supply, second water-cooling heating power supply, air-cooled cable, induction coil, being heat-treated lowering or hoisting gear includes stepper motor, slide unit, L-type coil fixed flange, bonnet end face, slide unit locating piece, device fixing threaded hole, induction coil includes high silica cloth, dish-type coil, micarex, micarex fixing bolt, heating power supply is located at the right side of the first water-cooling heating power supply in Medium frequency induction, Medium frequency induction external heat power supply is located at the lower section of heating power supply in Medium frequency induction.The present invention can be according to live high temperature and high pressure steam valve sealing face structure and the complexity of environment, ensure to meet Technology for Heating Processing requirement in welding or repair process, and accomplish lightness, miniaturization, it is easy to in-site installation and operation, it is to avoid due to the too big caused sealing surface crack tendence of valve body wall thickness.
Description
Technical field
The present invention relates to a kind of heat treatment system, more particularly to a kind of high temperature and high pressure steam valve sealing face scene is online
Heat treatment system.
Background technology
When scene high temperature and high pressure steam valve sealing face needs to weld and repaired at present, mainly take outer wall heat transfer or
Person will integrally enter the heat treatment method of heating furnace under work piece cut, still, and these methods not only waste time and energy, and heat treatment
Technological requirement can not be also met.
The content of the invention
The technical problems to be solved by the invention are to provide at a kind of online heat in high temperature and high pressure steam valve sealing face scene
Reason system, it can be according to live high temperature and high pressure steam valve sealing face structure and the complexity of environment, it is ensured that is welding or is repairing
Technology for Heating Processing requirement is met during multiple, and accomplishes lightness, miniaturization, is easy to in-site installation and operation, it is to avoid due to
The too big caused sealing surface crack tendence of valve body wall thickness.
The present invention is to solve above-mentioned technical problem by following technical proposals：A kind of high temperature and high pressure steam valve seal
Face scene burning optimization on line system, it includes heating power supply in Medium frequency induction, Medium frequency induction external heat power supply, the first water-cooling heating
Power supply, the second water-cooling heating power supply, air-cooled cable, heat treatment lowering or hoisting gear, heat-preservation cotton, valve body, induction coil, heat treatment lifting
Device include stepper motor, slide unit, L-type coil fixed flange, bonnet end face, move horizontally fixation steel plate, screw mandrel fix spiral shell
Mother, slide unit locating piece, device fixing threaded hole, handwheel, mobile screw mandrel, support member, fixation steel plate, induction coil include high silica
Heating electricity in cloth, dish-type coil, micarex, micarex fixing bolt, insulating flange plate, water-cooled copper, cross, Medium frequency induction
Source is located at the right side of the first water-cooling heating power supply, and Medium frequency induction external heat power supply is located at the lower section of heating power supply in Medium frequency induction,
Connected between first water-cooling heating power supply and the second water-cooling heating power supply by heating power supply in Medium frequency induction, the second water-cooling heating
Power supply is located at the lower section of the first water-cooling heating power supply, and air-cooled cable is connected with Medium frequency induction external heat power supply, heat treatment lifting dress
Setting in the left side of the first water-cooling heating power supply, heat-preservation cotton is located at the lower section of heat treatment lowering or hoisting gear, and valve body is located at induction coil
Left side, induction coil be located at the second water-cooling heating power supply lower section, connected between stepper motor and slide unit locating piece by slide unit
Connect, slide unit is located at the bottom of stepper motor, L-type coil fixed flange is located at the right side of slide unit, and bonnet end face is located at slide unit
Bottom, moves horizontally the top that fixation steel plate is located at mobile screw mandrel, is connected between screw mandrel fixing nut and handwheel by mobile screw mandrel
Connect, slide unit locating piece is located at the lower section of screw mandrel fixing nut, device fixing threaded hole is located at the right side of support member, and handwheel is located at movement
The right side of screw mandrel, mobile screw mandrel is located at the right side of screw mandrel fixing nut, and support member is located at the top of mobile screw mandrel, fixation steel plate position
In the left side of stepper motor, high silica cloth is located at the top in the left side of micarex, and dish-type coil is located at the bottom of high silica cloth, cloud
Connected between motherboard and insulating flange lid by water-cooled copper, micarex fixing bolt is located at the top of water-cooled copper, insulate method
Blue disk is located at the right side of water-cooled copper, and water-cooled copper is located at the right side of micarex, and cross is located at the top of high silica cloth.
Preferably, the bottom of heating power supply is provided with screw in the Medium frequency induction.
Preferably, the bottom of the Medium frequency induction external heat power supply is provided with screw.
Preferably, the air-cooled cable is shaped as rectangle.
Preferably, the thickness of the heat-preservation cotton should be 40~60 millimeters.
Preferably, the induction coil should wrap up 2~~3 floor height silica cloth.
Preferably, the stepper motor is shaped as rectangle.
Preferably, the left side of the L-type coil fixed flange is provided with groove.
Preferably, the handwheel is provided with handle.
Preferably, the mobile screw mandrel be shaped as it is cylindric.
The positive effect of the present invention is：The present invention can be according to live high temperature and high pressure steam valve sealing face structure
With the complexity of environment, it is ensured that met in welding or repair process Technology for Heating Processing requirement, and accomplish lightness, it is small-sized
Change, be easy to in-site installation and operation, it is to avoid due to the too big caused sealing surface crack tendence of valve body wall thickness.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is side structure schematic diagram of the invention.
Fig. 3 is line of induction loop graph of the invention.
Fig. 4 is the left view of induction coil.
Fig. 5 is the structural representation for being heat-treated lowering or hoisting gear of the invention.
Fig. 6 is the left view of heat treatment lowering or hoisting gear.
Fig. 7 is the rearview of heat treatment lowering or hoisting gear.
Embodiment
Present pre-ferred embodiments are provided below in conjunction with the accompanying drawings, to describe technical scheme in detail.
As shown in Figures 1 to 7, the live burning optimization on line system of high temperature and high pressure steam valve sealing face of the present invention includes intermediate frequency
It is heating power supply 1 in sensing, Medium frequency induction external heat power supply 2, the first water-cooling heating power supply 3, the second water-cooling heating power supply 4, air-cooled
Cable 5, heat treatment lowering or hoisting gear 6, heat-preservation cotton 7, valve body 8, induction coil 9, heat treatment lowering or hoisting gear 6 include stepper motor 10,
Slide unit 11, L-type coil fixed flange 12, bonnet end face 13, move horizontally fixation steel plate 14, screw mandrel fixing nut 15, slide unit
Locating piece 16, device fixing threaded hole 17, handwheel 18, mobile screw mandrel 19, support member 20, fixation steel plate 21, induction coil 9 include height
Silica cloth 22, dish-type coil 23, micarex 24, micarex fixing bolt 25, insulating flange plate 26, water-cooled copper 27, cross
28, heating power supply 1 is located at the right side of the first water-cooling heating power supply 3 in Medium frequency induction, and Medium frequency induction external heat power supply 2 is located at intermediate frequency
The lower section of heating power supply 1 in sensing, by Medium frequency induction between the first water-cooling heating power supply 3 and the second water-cooling heating power supply 4
Heating power supply 1 is connected, and the second water-cooling heating power supply 4 is located at the lower section of the first water-cooling heating power supply 3, air-cooled cable 5 and intermediate frequency sense
External heat power supply 2 is answered to connect, heat treatment lowering or hoisting gear 6 is located at the left side of the first water-cooling heating power supply 3, heat-preservation cotton 7 is located at heat
The lower section of lowering or hoisting gear 6 is managed, valve body 8 is located at the left side of induction coil 9, and induction coil 9 is located under the second water-cooling heating power supply 4
Side, is connected between stepper motor 10 and slide unit locating piece 16 by slide unit 11, and slide unit 11 is located at the bottom of stepper motor 10, L-type
Coil fixed flange 12 is located at the right side of slide unit 11, and bonnet end face 13 is located at the bottom of slide unit 11, moves horizontally fixation steel plate
14 are located at the top of mobile screw mandrel 19, are connected between screw mandrel fixing nut 15 and handwheel 18 by mobile screw mandrel 19, slide unit positioning
Block 16 is located at the lower section of screw mandrel fixing nut 15, and device fixing threaded hole 17 is located at the right side of support member 20, and handwheel 18 is located at movement
The right side of screw mandrel 19, mobile screw mandrel 19 is located at the right side of screw mandrel fixing nut 15, and support member 20 is located at the top of mobile screw mandrel 19,
Fixation steel plate 21 is located at the left side of stepper motor 10, and high silica cloth 22 is located at the top in the left side of micarex 24, dish-type coil 23
Positioned at the bottom of high silica cloth 22, connected between micarex 24 and insulating flange lid 26 by water-cooled copper 27, micarex is fixed
Bolt 25 is located at the top of water-cooled copper 27, and insulating flange plate 26 is located at the right side of water-cooled copper 27, and water-cooled copper 27 is located at cloud
The right side of motherboard 24, cross 28 is located at the top of high silica cloth 22.
The operation principle of the present invention is as follows：When needing heat treatment, frock is fixed on bonnet first with valve ending cover bolt
On, then heating coil is fixed in L-type mobile dish, the water-cooled cable of heating power supply and induction coil is connected, welds or repaiies
Before multiple, induction coil is first moved to the bonnet flange mouthful of valve body by lifting platform frock, then enters back into straight in valve cavity
To the interior hole site of sealing surface, it is heat-treated for outer wall, it is mainly by control system, 60KW intermediate frequency induction heating power supplies, flexibility
Air-cooled external heat cable composition, it, which heats cable, can be directly wound in irregular valve outer wall, be preheating to since valve whole
It is in running order always at the end of welding, in the formation of valve outer wall together " hot dam ", prevents excessively radiating, to ensure sealing
Face heating effect, inner and outer wall heat treatment starts simultaneously at work, after preheating temperature is constant, only exits interior heating coil, outer wall
Heat treatment continues steady temperature, to ensure the interlayer temperature in welding or repair process, after completing welding or repairing, interior heater wire
Circle enters, and post weld heat treatment is proceeded by with identical heating rate, constant temperature time, rate of temperature fall with additional heat coil, until
Whole heat treatment process is fully completed, and in actual heating process China and foreign countries, the flexible air-cooled coil cable of heating power supply is wrapped in valve
The outside in welding face, its work has five stages, wherein its heating-up temperature ensures solder side temperature during welding when heating is withdrawn from inside
Degree is not less than 300 DEG C~350 DEG C, and the first stage is the warm-up phase of welded seam area, and heating induction coil is through lifting in the stage
Platform frock, which drives, arrives valve inner repair surface position, and external heat works simultaneously in the stage, is heated position according to default liter
Warm speed carries out heating preheating, and second stage is preheating temperature constant temperature, in order to ensures welding or repairs the inside and outside of position
Wall temperature is consistent, the phase III, and interior heating induction coil is driven by lifting platform frock after preheating temperature is constant extracts valve out
The work of door inside cavity, the now lasting second stage of external heat, it is ensured that welding or repair process temperature are not less than 300 DEG C, directly
To welding or repair terminate, inside and outside the four to five stage simultaneously heat, work according to setting heat treatment cycle curve heating and
Cooling, so can be according to live high temperature and high pressure steam valve sealing face structure and the complexity of environment, it is ensured that welding or repairing
Technology for Heating Processing requirement is met during multiple.Heating power supply can start interior heating, Medium frequency induction outer-heating electric in Medium frequency induction
Source can start external heat, and the first water-cooling heating power supply can start water-cooling heating, and the second water-cooling heating power supply can start water
Cold heating, heat treatment lowering or hoisting gear can reach the effect of lifting in heat treatment, and heat-preservation cotton can be incubated, and stepper motor is provided
Electricity, slide unit is leaned against on slide unit locating piece, L-type coil fixed flange fixing-stable, easy to use, the letter of bonnet end face structure
Single, convenient use moves horizontally fixation steel plate and plays fixed effect, screw mandrel fixing nut fixes mobile screw mandrel, and device is fixed
Screw is fixed with screw fit, and the mobile screw mandrel of handwheel control, mobile screw mandrel can be rotated, and support member plays a part of support, Gu
Determine steel plate and play fixed effect, high silica cloth is wrapped on induction coil, and dish-type coil is internally wound, and micarex, which is played, to be closed
The effect of conjunction, micarex fixing bolt plays fixed effect, the convenient insulation of insulating flange plate and connection, prevents unexpected hair
It is raw, water-cooled copper can high temperature resistant, the inside of cross fixed inductor so accomplishes lightness, miniaturization, is easy to scene
Install and operate, it is to avoid due to the too big caused sealing surface crack tendence of valve body wall thickness.
The bottom of heating power supply 1 is provided with screw in Medium frequency induction, can so play fixed effect.
The bottom of Medium frequency induction external heat power supply 2 is provided with screw, can so play fixed effect.
The connection for being shaped as rectangle, so convenient and Medium frequency induction external heat power supply 2 of air-cooled cable 5.
The thickness of heat-preservation cotton 7 should be 40~60 millimeters, can so be incubated, convenient use.
Induction coil 9 should wrap up 2~~3 floor height silica cloth, high silica cloth thickness is less than or equal to 0.8 millimeter.
Stepper motor 10 is shaped as rectangle, so simple in construction, convenient use.
The left side of L-type coil fixed flange 12 is provided with groove, can so facilitate the connection with slide unit 11.
Handwheel 18 is provided with handle, can so facilitate and be shaken.
Being shaped as mobile screw mandrel 19 is cylindric, so facilitates and is rotated.
In summary, the present invention can according to live high temperature and high pressure steam valve sealing face structure and the complexity of environment,
Ensure to meet Technology for Heating Processing requirement in welding or repair process, and accomplish lightness, miniaturization, be easy to in-site installation and
Operation, it is to avoid due to the too big caused sealing surface crack tendence of valve body wall thickness.
Particular embodiments described above, technical problem, technical scheme and beneficial effect to the solution of the present invention are carried out
It is further described, should be understood that the specific embodiment that the foregoing is only of the invention, be not limited to
The present invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in this
Within the protection domain of invention.
Claims (10)
1. the live burning optimization on line system of a kind of high temperature and high pressure steam valve sealing face, it is characterised in that it includes Medium frequency induction
Interior heating power supply, Medium frequency induction external heat power supply, the first water-cooling heating power supply, the second water-cooling heating power supply, air-cooled cable, Re Chu
Lowering or hoisting gear, heat-preservation cotton, valve body, induction coil are managed, heat treatment lowering or hoisting gear includes stepper motor, slide unit, L-type coil fixation
Blue disk, bonnet end face, move horizontally fixation steel plate, screw mandrel fixing nut, slide unit locating piece, device fixing threaded hole, handwheel, movement
Screw mandrel, support member, fixation steel plate, induction coil include high silica cloth, dish-type coil, micarex, micarex fixing bolt, insulation
Heating power supply is located at the right side of the first water-cooling heating power supply, Medium frequency induction in ring flange, water-cooled copper, cross, Medium frequency induction
External heat power supply is located at the lower section of heating power supply in Medium frequency induction, between the first water-cooling heating power supply and the second water-cooling heating power supply
Connected by heating power supply in Medium frequency induction, the second water-cooling heating power supply is located at the lower section of the first water-cooling heating power supply, air-cooled electricity
Cable is connected with Medium frequency induction external heat power supply, and heat treatment lowering or hoisting gear is located at the left side of the first water-cooling heating power supply, heat-preservation cotton position
In the lower section of heat treatment lowering or hoisting gear, valve body is located at the left side of induction coil, and induction coil is located at the second water-cooling heating power supply
Lower section, is connected between stepper motor and slide unit locating piece by slide unit, and slide unit is located at the bottom of stepper motor, and L-type coil is fixed
Ring flange is located at the right side of slide unit, and bonnet end face is located at the bottom of slide unit, moves horizontally fixation steel plate and is located at the upper of mobile screw mandrel
Side, is connected between screw mandrel fixing nut and handwheel by mobile screw mandrel, and slide unit locating piece is located at the lower section of screw mandrel fixing nut, dress
The right side that fixing threaded hole is located at support member is put, handwheel is located at the right side of mobile screw mandrel, and mobile screw mandrel is located at screw mandrel fixing nut
Right side, support member is located at the top of mobile screw mandrel, and fixation steel plate is located at the left side of stepper motor, and high silica cloth is located at micarex
The top in left side, dish-type coil is located at the bottom of high silica cloth, is connected between micarex and insulating flange lid by water-cooled copper,
Micarex fixing bolt is located at the top of water-cooled copper, and insulating flange plate is located at the right side of water-cooled copper, and water-cooled copper is located at cloud
The right side of motherboard, cross is located at the top of high silica cloth.
2. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that institute
The bottom for stating heating power supply in Medium frequency induction is provided with screw.
3. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that institute
The bottom for stating Medium frequency induction external heat power supply is provided with screw.
4. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that institute
That states air-cooled cable is shaped as rectangle.
5. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that institute
The thickness for stating heat-preservation cotton should be 40~60 millimeters.
6. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that institute
2 should be wrapped up~~3 floor height silica cloth by stating induction coil.
7. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that institute
That states stepper motor is shaped as rectangle.
8. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that institute
The left side for stating L-type coil fixed flange is provided with groove.
9. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that institute
Handwheel is stated provided with handle.
10. the live burning optimization on line system of high temperature and high pressure steam valve sealing face as claimed in claim 1, it is characterised in that
Being shaped as the mobile screw mandrel is cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710289340.4A CN106967870B (en) | 2017-04-27 | 2017-04-27 | High temperature and high pressure steam valve sealing face scene burning optimization on line system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710289340.4A CN106967870B (en) | 2017-04-27 | 2017-04-27 | High temperature and high pressure steam valve sealing face scene burning optimization on line system |
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| Publication Number | Publication Date |
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| CN106967870A true CN106967870A (en) | 2017-07-21 |
| CN106967870B CN106967870B (en) | 2018-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710289340.4A Active CN106967870B (en) | 2017-04-27 | 2017-04-27 | High temperature and high pressure steam valve sealing face scene burning optimization on line system |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055388A (en) * | 2019-04-11 | 2019-07-26 | 禹州市鼎锋机械科技有限公司 | A kind of heat treating castings cooling device |
| CN114369712A (en) * | 2021-12-06 | 2022-04-19 | 中车株洲电机有限公司 | Induction heating method for bearing chamber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5459644A (en) * | 1977-10-20 | 1979-05-14 | Mitsubishi Electric Corp | Induction heating device |
| CN1368559A (en) * | 2001-02-03 | 2002-09-11 | 杨松鹤 | Quenching apparatus of rod parts |
| CN102382953A (en) * | 2011-09-30 | 2012-03-21 | 安徽明雁齿轮有限公司 | Rotary lifting-type gear sleeve automatic high frequency quenching device |
| CN206902187U (en) * | 2017-04-27 | 2018-01-19 | 上海电力股份有限公司吴泾热电厂 | High temperature and high pressure steam valve sealing face scene burning optimization on line system |
-
2017
- 2017-04-27 CN CN201710289340.4A patent/CN106967870B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5459644A (en) * | 1977-10-20 | 1979-05-14 | Mitsubishi Electric Corp | Induction heating device |
| CN1368559A (en) * | 2001-02-03 | 2002-09-11 | 杨松鹤 | Quenching apparatus of rod parts |
| CN102382953A (en) * | 2011-09-30 | 2012-03-21 | 安徽明雁齿轮有限公司 | Rotary lifting-type gear sleeve automatic high frequency quenching device |
| CN206902187U (en) * | 2017-04-27 | 2018-01-19 | 上海电力股份有限公司吴泾热电厂 | High temperature and high pressure steam valve sealing face scene burning optimization on line system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055388A (en) * | 2019-04-11 | 2019-07-26 | 禹州市鼎锋机械科技有限公司 | A kind of heat treating castings cooling device |
| CN114369712A (en) * | 2021-12-06 | 2022-04-19 | 中车株洲电机有限公司 | Induction heating method for bearing chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106967870B (en) | 2018-07-17 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170721 Assignee: Shanghai Wujing Electric Power Engineering Co., Ltd. Assignor: WUJING THERMAL POWER PLANT, SHANGHAI ELECTRIC POWER CO., LTD. Contract record no.: 2018310000059 Denomination of invention: High-temperature high-pressure steam valve sealing face on-site online heat treatment system Granted publication date: 20180717 License type: Exclusive License Record date: 20181122 |
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