CN212316195U - On-site high-precision heat treatment device for turbine blade - Google Patents
On-site high-precision heat treatment device for turbine blade Download PDFInfo
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- CN212316195U CN212316195U CN202021254839.5U CN202021254839U CN212316195U CN 212316195 U CN212316195 U CN 212316195U CN 202021254839 U CN202021254839 U CN 202021254839U CN 212316195 U CN212316195 U CN 212316195U
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Abstract
The utility model discloses an on-site high-precision heat treatment device for a turbine blade, which comprises an infrared heater shell, an infrared reflecting-mounting base body sleeved in the infrared heater shell, and an infrared heating pipe arranged in the infrared reflecting-mounting base body through an infrared lamp pipe clamp; wherein, two ends of the infrared reflection-mounting base body are used for protecting the infrared heating pipe through end limiting protection plates; a heating space is formed between the infrared heating pipe and the infrared reflection-mounting base body, a joint mounting hole is formed in the top of the infrared reflection-mounting base body, a cooling pipeline joint is arranged on the top of the infrared reflection-mounting base body, the cooling pipeline joint is communicated with the heating space, a plurality of cooling ports communicated with the heating space are formed in the side wall of the infrared reflection-mounting base body, and a gap communicated with the cooling ports is formed between the outer shell of the infrared heater and the two side faces of the infrared reflection-mounting base body. The utility model has the advantages of large heating area, high heating precision, good temperature uniformity and cleanness without pollution.
Description
Technical Field
The utility model belongs to the technical field of steam turbine blade heat treatment, concretely relates to on-spot high accuracy heat treatment device for steam turbine blade is particularly useful for the thermal treatment process after steam turbine blade welding restores, and the device is based on quartz lamp infrared radiation heating technique, and more traditional gas adds hot type heat treatment device and resistance area parcel and adds hot type heat treatment device and compare and have that heating area is big, heating accuracy is high, temperature homogeneity is good and clean pollution-free advantage.
Background
The steam turbine is the core power equipment of modern thermal power factory, also applies to metallurgical industry, chemical industry in boats and ships power device equally, mainly drives turbine blade and externally does work through high temperature high pressure steam. As a core power device in the energy field, the output power can reach dozens of to hundreds of megawatts, the average manufacturing cost exceeds one hundred million yuan RMB, and the turbine blade is used as one of the core components of the steam turbine, and the single piece manufacturing cost is high. However, in the service process of the steam turbine, the turbine blades are corroded by high-temperature gas and damaged and destroyed at the ends of the blades, so that the blades need to be repaired and remanufactured after being operated for a period of time (usually half a year to one year), which is an important means for prolonging the service life of the steam turbine and reducing the operation and maintenance cost.
At present, one of the main means for repairing and remanufacturing the blade is to weld the damaged part. After welding, local heat treatment is carried out on the welding part, thermal stress is released and the microstructure is toughened in a mode of annealing the new welding part, the stress mismatching between the new welding part and the original blade part is relieved, and the service life of the blade is prolonged. In order to accelerate the maintenance progress and shorten the maintenance period, the repair and remanufacture of the steam turbine must be carried out on the operation site of the steam turbine, and the blades cannot be disassembled, which puts high requirements on the site heat treatment of the steam turbine blades.
The main means of heat treatment after the repair of the current turbine blade is as follows:
1. heating oxyacetylene or oxypropylene gas. The specific operation process is that workers hold oxyacetylene or oxypropylene gas guns to heat welding parts, and the oxygen acetylene or oxypropylene gas guns have the advantage of high heating speed. However, the gas gun has the defects of small heating area, uneven temperature of a heating part, large temperature error (plus or minus 20 ℃) and the like because the nozzle of the gas gun is small and can only heat the area with the diameter within 30 mm; and because the gas is introduced, the pollution can be caused, the noise is high, and the dependence on the manual experience and the skill level is strong.
2. And heating the resistance tape in a wrapping manner. The method adopts the resistance band to wrap the whole welding area and heats the welding area through the thermal resistance effect, has the advantages of realizing full-field heating on the welding part and having the defects of low heating speed, poor temperature uniformity (plus or minus 20 ℃) and uncontrollable low-temperature section.
In summary, the existing heat treatment means after the repair of the turbine blade has the common defects of low precision, large error, low efficiency and the like. Simultaneously, there is not the special equipment of high accuracy that can be applied to steam turbine blade and restore back thermal treatment in section yet on the world, to sum up, utility model one set has that heating area is big concurrently, heating accuracy is high and pollution-free blade restores back thermal treatment equipment very necessary.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a scene high accuracy heat treatment device for steam turbine blade has realized the high accuracy full field heating to the welding position through quartz lamp infrared radiation technique, and its heating range can reach 300mm x 40mm, and heating accuracy can reach 1-2 ℃.
The utility model discloses a following technical scheme realizes:
a field high-precision heat treatment device for a turbine blade comprises an infrared heater shell, an infrared reflecting-mounting base body sleeved in the infrared heater shell, and an infrared heating pipe arranged in the infrared reflecting-mounting base body through an infrared lamp pipe clamp; wherein, two ends of the infrared reflection-mounting base body are used for protecting the infrared heating pipe through end limiting protection plates; a heating space is formed between the infrared heating pipe and the infrared reflection-mounting base body, a joint mounting hole is formed in the top of the infrared reflection-mounting base body, a cooling pipeline joint is arranged on the top of the infrared reflection-mounting base body, the cooling pipeline joint is communicated with the heating space, a plurality of cooling ports communicated with the heating space are formed in the side wall of the infrared reflection-mounting base body, and a gap communicated with the cooling ports is formed between the outer shell of the infrared heater and the two side faces of the infrared reflection-mounting base body.
The utility model discloses a further improvement lies in, infrared heater shell, infrared reflection of light-installation base member and infrared heating pipe's cross-section all is the U type form.
The utility model discloses further improvement lies in, and the interior arc surface radius of the spacing guard plate of end is less than infrared heating pipe inner arc radius.
The utility model discloses a further improvement lies in, infrared fluorescent tube anchor clamps include anchor clamps under infrared fluorescent tube and the infrared fluorescent tube anchor clamps on the infrared fluorescent tube.
The utility model discloses a further improvement lies in, infrared heater shell and the infrared reflection of light-installation base member top welding.
The utility model discloses a further improvement lies in, installation shell mounting pad piece in the middle of infrared heater shell and the both sides face of infrared reflection-installation base member forms the gap of predetermined thickness, lets in cooling gas through the cooling tube joint, and cooling gas goes out from the cooling port, gets into the gap passageway of infrared heater shell and infrared reflection-installation base member side, finally comes out from the bottom.
The utility model discloses further improvement lies in, the device's heating range reaches 300mm x 40mm, and the heating precision reaches 1-2 ℃.
The utility model discloses at least, following profitable technological effect has:
the utility model provides a pair of on-spot high accuracy heat treatment device for steam turbine blade mainly includes key parts such as infrared heater, cooling pipe joint, the spacing guard plate in end. The device is designed aiming at the preheating treatment during the circumferential installation of the blades, is a small infrared heater and is convenient to be assembled with the blades for heating. The infrared heaters are fixed in the infrared reflecting-mounting base body through the infrared lamp tube upper clamp and the infrared lamp tube lower clamp, and are used for heating the blades in the heating space. The infrared heater shell is welded with the top of the infrared reflection-installation base body, and a gap with one-degree thickness is formed between the two side faces. And cooling gas is introduced into the gap through the cooling port to cool the two sides, so that the surface of the shell of the infrared heater can reach the required temperature. The end limiting protection plates are arranged on two end faces of the infrared reflection-mounting base body to limit the blades and prevent the blades from impacting the infrared heating pipe.
To sum up, the utility model relates to an on-spot high accuracy heat treatment device for steam turbine blade has realized through quartz lamp infrared radiation technique that the gas that is more traditional adds hot type heat treatment device and resistance area parcel and adds hot type heat treatment device and compare and have that heating area is big, heating accuracy is high, temperature homogeneity is good and clean pollution-free advantage to the local high accuracy full-field heating of blade.
Drawings
Fig. 1 is a structural assembly diagram of the present invention.
Fig. 2 is a structural axial view of the present invention.
Fig. 3 is a front view of the structure of the present invention.
Description of reference numerals:
the structure comprises a cooling pipeline joint 1, an infrared heater shell 2, an end limiting protection plate 3, an infrared reflecting-mounting base body 4, an infrared lamp tube upper clamp 5, a shell mounting gasket 6, an infrared lamp tube lower clamp 7, an infrared heating pipe 8, a cooling port 9 and a joint mounting hole 10.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, the utility model provides a field high precision heat treatment device for turbine blade, which mainly comprises 10 parts: the infrared heating device comprises a cooling pipeline joint 1, an infrared heater shell 2, an end limiting protection plate 3, an infrared reflection-mounting base body 4, an infrared lamp tube upper clamp 5, a shell mounting gasket 6, an infrared lamp tube lower clamp 7, an infrared heating tube 8, a cooling opening 9 and a joint mounting hole 10.
In the device, an infrared heating tube 8 is fixed in an infrared reflection-mounting base 4 by an infrared lamp tube upper clamp 5 and an infrared lamp tube lower clamp 7, forming a heating space. The infrared heater shell 2 is welded with the top of the infrared reflection-mounting base body 4, and the shell mounting gasket 6 is mounted in the middle of two side faces, so that a gap with one-degree thickness is formed. The cooling pipeline joint 1 is arranged on the joint mounting hole 10, cooling gas is introduced, and the cooling gas flows out from the cooling hole 9, enters a gap channel between the infrared heater shell 2 and the side surface of the infrared reflection-mounting base body 4 and finally flows out from the bottom. Thus, the cooling gas is cooled at the two side surfaces, and the surface of the shell 2 of the infrared heater can reach the required temperature. The end limiting protection plates 3 are arranged on two end faces of the infrared reflection-mounting base body 4, the radius of the inner arc surface of each end limiting protection plate is smaller than that of the inner arc of the infrared heating pipe 8, so that the position limitation is carried out on the blades, and meanwhile, the blades can be prevented from impacting the infrared heating pipe 8.
The utility model provides a pair of on-spot high accuracy heat treatment device for steam turbine blade has realized the whole field heating of the local high accuracy of blade through quartz lamp infrared radiation technique, and its heating range can reach 300mm 40mm, and heating accuracy can reach 1-2 ℃, more traditional gas heating formula heat treatment device and resistance area parcel heating formula heat treatment device compare have heating area big, heating accuracy is high, temperature homogeneity is good and clean pollution-free advantage, belong to field weld post treatment facility under the steam turbine blade heat treatment technical field.
Claims (7)
1. A field high-precision heat treatment device for a turbine blade is characterized by comprising an infrared heater shell (2), an infrared reflecting-mounting base body (4) sleeved in the infrared heater shell (2), and an infrared heating pipe (8) mounted in the infrared reflecting-mounting base body (4) through an infrared lamp pipe clamp; wherein the content of the first and second substances,
two ends of the infrared reflection-mounting base body (4) pass through the end limiting protection plate (3) and are used for protecting the infrared heating pipe (8); a heating space is formed between the infrared heating pipe (8) and the infrared reflection-mounting base body (4), a joint mounting hole (10) is formed in the top of the infrared reflection-mounting base body (4), a cooling pipeline joint (1) is arranged on the top of the infrared reflection-mounting base body, the cooling pipeline joint (1) is communicated with the heating space, a plurality of cooling ports (9) communicated with the heating space are formed in the side wall of the infrared reflection-mounting base body (4), and gaps communicated with the cooling ports (9) are formed in the middles of the two side faces of the infrared heater shell (2) and the infrared reflection-mounting base body (4).
2. The on-site high-precision heat treatment device for steam turbine blades according to claim 1, characterized in that the infrared heater casing (2), the infrared reflection-mounting base (4) and the infrared heating pipe (8) are all U-shaped in cross section.
3. The on-site high-precision heat treatment device for the steam turbine blades as claimed in claim 2, wherein the radius of the inner arc surface of the end limiting protection plate (3) is smaller than that of the inner arc surface of the infrared heating pipe (8).
4. The on-site high-precision heat treatment device for the turbine blades according to claim 1, characterized in that the infrared lamp tube clamp comprises an infrared lamp tube upper clamp (5) and an infrared lamp tube lower clamp (7).
5. The on-site high-precision heat treatment device for steam turbine blades according to claim 1, characterized in that the infrared heater case (2) is welded to the top of the infrared reflection-mounting base (4).
6. The on-site high-precision heat treatment device for the steam turbine blade according to claim 1, characterized in that a shell mounting gasket (6) is mounted between the infrared heater shell (2) and the two side surfaces of the infrared reflection-mounting base body (4) to form a gap with a predetermined thickness, cooling gas is introduced through the cooling pipe joint (1), and the cooling gas flows out from the cooling port (9), enters the gap channel between the infrared heater shell (2) and the side surfaces of the infrared reflection-mounting base body (4), and finally flows out from the bottom.
7. The on-site high-precision heat treatment device for the steam turbine blade according to claim 1, wherein the device is heated within a range of 300mm x 40mm with a heating precision of 1-2 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021254839.5U CN212316195U (en) | 2020-07-01 | 2020-07-01 | On-site high-precision heat treatment device for turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021254839.5U CN212316195U (en) | 2020-07-01 | 2020-07-01 | On-site high-precision heat treatment device for turbine blade |
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| Publication Number | Publication Date |
|---|---|
| CN212316195U true CN212316195U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021254839.5U Active CN212316195U (en) | 2020-07-01 | 2020-07-01 | On-site high-precision heat treatment device for turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212316195U (en) |
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2020
- 2020-07-01 CN CN202021254839.5U patent/CN212316195U/en active Active
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