CN205817124U - Steel pipe seam inner wall temperature equivalent measurement device - Google Patents
Steel pipe seam inner wall temperature equivalent measurement device Download PDFInfo
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- CN205817124U CN205817124U CN201620504303.1U CN201620504303U CN205817124U CN 205817124 U CN205817124 U CN 205817124U CN 201620504303 U CN201620504303 U CN 201620504303U CN 205817124 U CN205817124 U CN 205817124U
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- steel pipe
- wall
- wall temperature
- measurement device
- thermocouple
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Abstract
A kind of steel pipe seam inner wall temperature equivalent measurement device, including heater and thermocouple, described heater covers at outer wall of steel pipe and centered by described weld seam, the half of the width of described heater is more than or equal to 5.5t, t is thickness of steel pipe, at described outer wall of steel pipe away from thermocouple described in the location arrangements that axis of a weld axial distance is t.This utility model provides the steel pipe seam inner wall temperature equivalent measurement device of a kind of accurate estimation steel pipe seam inner wall temperature.
Description
Technical field
This utility model relates to a kind of steel pipe seam inner wall temperature equivalent measurement device.
Background technology
At some steel-pipe welding, need butt welded seam to carry out local heat treatmet after welding, generally arrange on pipeline and add
Hot device, each heating region layout temperature-control heat couple, described temperature-control heat couple is laid in the outer wall of steel pipe, it is impossible to accurately measure steel
The temperature of pipe weld seam inwall.
Summary of the invention
In order to overcome existing steel pipe cannot detect the deficiency of steel pipe seam inner wall temperature, this utility model provides a kind of accurate
Really estimate the steel pipe seam inner wall temperature equivalent measurement device of steel pipe seam inner wall temperature.
This utility model solves its technical problem and be the technical scheme is that
A kind of steel pipe seam inner wall temperature equivalent measurement device, including heater and thermocouple, described heater covers
Covering at outer wall of steel pipe and centered by described weld seam, the half of the width of described heater is steel pipe walls more than or equal to 5.5t, t
Thickness, at described outer wall of steel pipe away from thermocouple described in the location arrangements that axis of a weld axial distance is t.
Further, described thermocouple by thin stainless steel substrates pressure welding on heating region surface.
The beneficial effects of the utility model are mainly manifested in: accurately estimation steel pipe seam inner wall temperature.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of steel pipe seam inner wall temperature equivalent measurement device, does not show the structure of heater.
Fig. 2 is the side view of Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.
Seeing figures.1.and.2, a kind of steel pipe seam inner wall temperature equivalent measurement device, including heater and thermocouple, institute
Stating heater to cover at outer wall of steel pipe and centered by described weld seam, the half of the width of described heater is more than or equal to
5.5t, t are thickness of steel pipe, at described outer wall of steel pipe away from thermocouple described in the location arrangements that axis of a weld axial distance is t.
Further, described thermocouple by thin stainless steel substrates pressure welding on heating region surface.
With reference to Fig. 1, temperature-control heat couple can also be installed in commissure.
In the present embodiment, the postwelding high tempering heat treatment of pipe fitting welding joint: be with certain heating rate by weldment
Being heated to below steel phase transition temperature Ac1, be incubated the setting time, then weldment is cooled to room temperature, to improve weldering with the speed set
A kind of welding Technology for Heating Processing of the metallographic structure of joint, performance and elimination residual stress.
The heater of the present embodiment uses Far infrared heating method heating, should make every effort to inside and outside wall and weld seam both sides temperature is equal
Even；Thermocouple calibration is qualified and before the deadline, and thermocouple uses thin stainless steel substrates to use the method for energy storage pressure welding to be fixed on weldering
Part surface, it is necessary to assure the hot junction of thermocouple contacts well with weldment.
Owing to steel pipeline wall thickness is big, inside and outside wall temperature extent directly affects thermal effectiveness.In order to grasp pipeline heat
Inner wall temperature during process We conducted simulation and actual measurement, and the width of heat-insulation layer and thickness directly affect inner wall temperature, research
And result of the test: as long as the width of heating tape is more than 5.5 times of wall thickness, the outer surface axial distance away from axis of a weld is t's
Position is substantially equal with the temperature of the inner surface root of weld.
T is that temperature estimation herein is weld seam inner wall temperature at this, and this thermocouple is away from one times of wall thickness of Weld pipe mill
Effect thermocouple.
Owing to generally cannot realize in installing monitoring thermocouple heat treatment at the scene at steel pipe internal-surface, therefore can be by outward
Surface is installed one " equivalent heat galvanic couple " and is monitored the design temperature scope whether inner wall temperature reaches minimum, described " equivalent heat
Galvanic couple " position be under certain condition test obtain, can be according to its actual heat treatment condition, part dimension to vitals
Deng the heterogeneity phantom and the installation of " equivalent heat galvanic couple " that more accurately determine parts by the way of finite element modelling or test
Position.
Claims (2)
1. a steel pipe seam inner wall temperature equivalent measurement device, it is characterised in that: described measurement apparatus include heater and
Thermocouple, described heater covers at outer wall of steel pipe and centered by described weld seam, the half of the width of described heater
It is thickness of steel pipe more than or equal to 5.5t, t, at described outer wall of steel pipe away from described in the location arrangements that axis of a weld axial distance is t
Thermocouple.
2. steel pipe seam inner wall temperature equivalent measurement device as claimed in claim 1, it is characterised in that: described thermocouple passes through
Thin stainless steel substrates pressure welding is on heating region surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504303.1U CN205817124U (en) | 2016-05-30 | 2016-05-30 | Steel pipe seam inner wall temperature equivalent measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504303.1U CN205817124U (en) | 2016-05-30 | 2016-05-30 | Steel pipe seam inner wall temperature equivalent measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205817124U true CN205817124U (en) | 2016-12-21 |
Family
ID=57558233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620504303.1U Active CN205817124U (en) | 2016-05-30 | 2016-05-30 | Steel pipe seam inner wall temperature equivalent measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205817124U (en) |
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2016
- 2016-05-30 CN CN201620504303.1U patent/CN205817124U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |