CN108165718A - Power station large size bend pipe annealing device - Google Patents
Power station large size bend pipe annealing device Download PDFInfo
- Publication number
- CN108165718A CN108165718A CN201611114823.2A CN201611114823A CN108165718A CN 108165718 A CN108165718 A CN 108165718A CN 201611114823 A CN201611114823 A CN 201611114823A CN 108165718 A CN108165718 A CN 108165718A
- Authority
- CN
- China
- Prior art keywords
- bend pipe
- heater
- wall
- heat
- power station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- 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
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- 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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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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)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention is suitable for power station large size P91 class bend pipe heat treatment processes.For general factory, because without large-scale heat-treatment furnace, normalizing+temper can not be carried out to large-scale bend pipe, can only entrust outside has equipment manufacturer's heat treatment, and such Project Product delivery period is unsecured, and product expense increases, and production assurance is poor.This apparatus structure and the simple and practical convenience of heat treatment method, with reference to push-down heat-treatment furnace and heater operation principle, use push rod clearance transmission device, opposite opened heater, bend pipe runs opposing stationary in heater, the heating of different process section zonal cooling, cooling are carried out to bend pipe, solves problem above.Auxiliary device has thermocouple, temperature-controlled cabinet, cooling blower etc..
Description
Technical field
The design is designed for invention, belongs to power station bend pipe Field of Heat-treatment.
Background technology
At present, power station bend pipe heat treatment uses gas furnace substantially（Or resistance furnace）Carry out the side of whole heating normalizing, tempering
Method.During the bend pipe heat treatment of general factory, traditional method is whole shove charge normalizing, air-cooled to room temperature after heat preservation, reenters stove
Tempering, it is air-cooled after heat preservation.And for large-scale bend pipe especially caliber is big, the bend pipe of length length, because general factory is heat-treated
Equipment can not load, it has to which outer committee has large-scale Equipment for Heating Processing producer to be heat-treated, and the expense that often results in increases and product
Delivery period is delayed, and production assurance is poor.
Invention content
The present invention solves the above problem, it is proposed that one kind is for large-scale bend pipe heat-treating apparatus.This device is according to curved
Pipe outside diameter selects heater, and bend pipe length can be unlimited.During heating, bend pipe is pushed forward by push rod transport mechanism with gap, and one
Heater endoporus is stretched at end, forms relative closure greenhouse and is heated, and after first entering first heater preheating, push rod is conveyed into
Second heater heating, two heaters（Different process section）Heating rate, preheating, heating and thermal insulation temperature and time are according to work
Push rod transmission is opened depending on skill parameter, after heat preservation, after bend pipe stretches out one section of heater, it is air-cooled to open wind turbine progress（Normalizing
When, tempering can not use it is air-cooled, it is air-cooled）.Heat stepwise, cooling are until the processing of whole branch bend pipe is completed.
This apparatus system utilizes bending machine delivery device, increases opposite opened heater and cooling blower, and it is big not need to input
Amount fund purchases large-scale heat-treatment furnace, you can realizes large-scale bend pipe normalizing+tempering heat treatment, preferably meets production needs, add
The fast production cycle, expense is saved.
Description of the drawings
Fig. 1:Bend pipe heater heating installation sectional view.
Fig. 2:Bend pipe transmission, heating, chiller system vertical view.
Specific embodiment
（By taking P91 bend pipe wall thickness 35mm as an example）.
1：Normalizing.
（1）During work, bend pipe is pushed forward into first heater endoporus by push rod transport mechanism, starts to preheat,.Heater
Temperature control box setting heating rate, preheating temperature（850±20℃）, soaking time（60min）.
（2）Preheating insulation terminates, and the continuation of push rod transport mechanism pushes forward bend pipe, and front end enters second heater heating,
Heater temperature control box setting heating rate, heating temperature（1060±20℃）, soaking time（40min）.First heating simultaneously
Device continues to preheat two sections.
（3）Second heater heating and thermal insulation terminates, and the continuation of push rod transport mechanism pushes forward bend pipe, and it is cold that front end enters wind turbine
But wind turbine is opened to the back elbow section quenching that is heated by area.
（4）Section heating, cooling more than realization bend pipe are carried out according to upper continuous gap.Bend pipe has been completed cooling section and has been held with movable support bracket
It carries, in case bend pipe is tumbled.
2：Tempering.
Essentially identical with normalizing procedure, only the technological parameters such as set temperature, soaking time change, and cooling is cold using air
But.Preheating temperature（550±20℃）, soaking time（60min）；Heating temperature（770±10℃）, soaking time（90min）.
Claims (1)
1. power station bend pipe annealing device, structure feature are：
First, there is certain altitude heat-preservation cotton in cylinder type opposite opened heater, inward at both ends hole direction, and two halves annulus can be opened, handling
It is convenient, and both ends heat-preservation cotton to form greenhouse with soft contact of bend pipe outer wall, and bend pipe heating temperature can be protected not scatter and disappear；
2nd, it is preferably to reduce the temperature difference before and after bend pipe, the heater heating of bend pipe cold end side first to be distributed two heaters
Temperature can be less than another 150~200 DEG C of heater heating temperature；
3rd, thermocouple tail end is fixed on heater one end, thermometric end stretch between heater inner wall and bend pipe outer wall greenhouse with it is curved
Pipe outer wall contacts；
4th, 50 ± 10mm of distance between heater inner wall and bend pipe outer wall；
5th, fixed transport mechanism is push rod clearance transmission, and transmitting range and interval time are heated length and time tune according to bend pipe
Section；
This apparatus system ensure that entire bend pipe is continuously heated and cools down the normalized and tempered processing, it can be achieved that bend pipe, and reaching will
Seek quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114823.2A CN108165718A (en) | 2016-12-07 | 2016-12-07 | Power station large size bend pipe annealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114823.2A CN108165718A (en) | 2016-12-07 | 2016-12-07 | Power station large size bend pipe annealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108165718A true CN108165718A (en) | 2018-06-15 |
Family
ID=62526544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611114823.2A Pending CN108165718A (en) | 2016-12-07 | 2016-12-07 | Power station large size bend pipe annealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108165718A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453045A (en) * | 2019-09-06 | 2019-11-15 | 张家港市昆仑管业有限公司 | U-shaped heat exchange pipe bend heat treatment method |
| CN112658137A (en) * | 2020-10-29 | 2021-04-16 | 常熟安通机械成套设备制造有限公司 | Large-diameter steam pipeline bending process |
-
2016
- 2016-12-07 CN CN201611114823.2A patent/CN108165718A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453045A (en) * | 2019-09-06 | 2019-11-15 | 张家港市昆仑管业有限公司 | U-shaped heat exchange pipe bend heat treatment method |
| CN112658137A (en) * | 2020-10-29 | 2021-04-16 | 常熟安通机械成套设备制造有限公司 | Large-diameter steam pipeline bending process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180615 |
|
| WD01 | Invention patent application deemed withdrawn after publication |