CN212030158U - Heating and dehumidifying device used before steel rail welding - Google Patents
Heating and dehumidifying device used before steel rail welding Download PDFInfo
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- CN212030158U CN212030158U CN202020124198.5U CN202020124198U CN212030158U CN 212030158 U CN212030158 U CN 212030158U CN 202020124198 U CN202020124198 U CN 202020124198U CN 212030158 U CN212030158 U CN 212030158U
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- air
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- rail
- heating
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 238000003466 welding Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 16
- 238000005422 blasting Methods 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000010953 base metal Substances 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The utility model discloses a heating dehydrating unit before rail welding has air compressor, gas holder, air heater and rail blast box. The air compressor stores air in the air storage tank, then the air is heated by the air heater and enters the steel rail air injection box, and the air is injected to the steel rail passing through the steel rail air injection box through the air holes in the inner layer of the steel rail air injection box. The utility model discloses can make moisture on the rail pass through the rapid evaporation of heated air, guarantee that the rail base metal full length is in the dry state before the welding.
Description
Technical Field
The utility model relates to a railway rail welding heating dehumidification technical field specifically is a heating dehydrating unit before rail welding.
Background
According to the regulation of TB/T1632.2-2014, the steel rail is required to be in a dry state in the whole length during welding, the temperature of the steel rail is not lower than 10 ℃ before welding, the welding current is reduced due to the fact that the steel rail is in contact with an electrode of a welding machine in a wet state after rain in summer, the temperature of the steel rail is lower than 10 ℃ in winter, the welding machine current is changed, welding quality is directly influenced, in order to guarantee that the welding quality and a workshop production task are completed, the temperature of the steel rail is not lower than 10 ℃ before welding as soon as possible, the whole length of the steel rail is in the dry state before welding, a natural airing method is used on site to remove water on the surface of the steel rail at present, but the method has the.
SUMMERY OF THE UTILITY MODEL
In order to solve the rail temperature and be less than 10 ℃ before the welding to and there is water problem on the rail surface, the utility model provides a heating dehydrating unit before the rail welding can detach rail surface moisture fast to rail base metal temperature is not less than 10 ℃ before guaranteeing the welding.
The utility model relates to a heating dehydrating unit before rail welding, including air compressor, gas holder, air heater and rail blast box.
And the air outlet end of the air compressor is communicated with the air inlet end of the air storage tank through a pipeline. The air outlet end of the air storage tank is connected with the air inlet end of the air heater through a pipeline. The air outlet end of the air heater is connected with the air inlet end of the main air inlet pipe of the steel rail air blasting box through a pipeline.
The steel rail air blasting box is of a double-layer tubular pile structure with an inner air blasting box layer and an outer air blasting box layer, and a closed air cavity is formed between the inner air blasting box layer and the outer air blasting box layer. The inner layer of the air injection box is evenly distributed with air holes.
The air compressor stores air in the air storage tank, and then the air is heated by the air heater and enters the steel rail air injection box and is injected to the steel rail passing through the steel rail air injection box through the air holes in the inner layer of the steel rail air injection box. The utility model discloses can make moisture on the rail pass through the rapid evaporation of heated air, guarantee that the rail base metal full length is in the dry state before the welding.
The utility model has the advantages that: the utility model discloses heating dehydrating unit before rail welding can get rid of rail surface moisture fast, improves and welds rail production efficiency, guarantees welding quality.
Drawings
FIG. 1 is a schematic view of the overall structure of the heating and dehumidifying device before welding the steel rail of the present invention;
in the figure:
1-air compressor 2-air storage tank 3-air heater
4-steel rail air blasting box 5-pressure regulating valve 6-pressure gauge
401-inner layer 402 of air-jet box-outer layer 403 of air-jet box-air cavity
404-upper intake vent 405-lower intake vent 406-bottom intake vent
407-branch inlet pipe 408-total inlet pipe
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The utility model discloses heating dehydrating unit before rail welding, including air compressor 1, gas holder 2, air heater 3 and rail blast box 4, as shown in figure 1.
The air compressor 1 selects a 22kw air compressor, the working pressure is 7bar, and the air displacement is 3.8m3Min, adjusting the displacement of the air compressor 1 to about 3.0m3And/min. The air outlet end of the air compressor 1 is communicated with the air inlet end of the air storage tank 2 through a pipeline, so that compressed air generated by the air compressor 1 enters the air storage tank 2.
The volume of the gas storage tank 2 is 3m3And the rated working pressure is 1.3MPa, and the air outlet end of the air storage tank 2 is connected with the air inlet end of the air heater 3 through a pipeline, so that the compressed air in the air storage tank 2 enters the air heater 3. A pressure regulating valve 5 is arranged on the gas outlet end pipeline of the gas storage tank 2, and the pressure at the gas outlet end of the gas storage tank 2 is regulated by regulating the pressure regulating valve to pressThe force is adjusted to 0.09-0.12 MPa.
The heating temperature range of the air heater 3 is 0-500 ℃, the power is 15-300 (KVA), the working voltage is 380V, and the volume is 1.2m3. The heating temperature is adjusted to 120-140 ℃ by adjusting the air heater 3, the specific temperature is also adjusted according to the moisture on the surface of the steel rail, and the air heater 3 heats the entering compressed air. The air outlet end of the air heater 3 is connected with the air inlet end of the main air inlet pipe 408 of the steel rail air blasting box 4 through a pipeline. And a pressure gauge is arranged on the air outlet end pipeline of the air heater 3 and used for displaying the pressure of the air outlet end of the air heater 3.
The steel rail air injection box 4 is of a double-layer tubular pile structure with an air injection box inner layer 401 and an air injection box outer layer 402, two ends of the air injection box inner layer 401 and the air injection box outer layer 402 are sealed, and therefore a closed air cavity 403 is formed between the air injection box inner layer 401 and the air injection box outer layer 402. The axial length of the steel rail air blasting box 4 is 520mm, the shape of the longitudinal section of the inner layer 401 of the air blasting box is matched with that of the steel rail longitudinal section to form a steel rail profile which is used for penetrating through a wet steel rail; and the longitudinal height of the inner layer 401 of the air-jet box is designed to be 226mm, the bottom width is 210mm, and the waist width is 40mm, so that the air-jet box can be suitable for steel rails with all sizes to penetrate through. Air holes with the diameter of phi 3mm are uniformly distributed on the inner layer 401 of the air spraying box.
An upper air inlet 404 is arranged at the front and rear positions of the upper part of the outer layer 402 of the air-jet box at the left side and the right side of the steel rail air-jet box 4, and the upper air inlet 404 is positioned at the side of the rail head of the steel rail profile formed by the inner layer 401 of the air-jet box; lower air inlets 405 are formed in the front and rear positions of the lower portion of the outer layer 402 of the air-jet box on the left side and the right side of the steel rail air-jet box 4, and the lower air inlets 405 are positioned on the side of the rail bottom of the steel rail profile formed by the inner layer 401 of the air-jet box; the front and back positions of the outer layer of the air-jet box at the bottom of the steel rail air-jet box 4 are provided with bottom air inlet holes 406. The upper air inlet 404, the lower air inlet 405 and the bottom air inlet 406 are all communicated with a main air inlet pipe 408 arranged below the steel rail air injection box 4 through an air inlet branch pipe 407 with the diameter of 30 mm. Therefore, after entering the main air inlet pipe 408, the heated high-temperature compressed air enters the air cavity 403 of the steel rail air injection box 4 through each air inlet branch pipe 407, and then is ejected through the air holes on the inner layer 401 of the air injection box. The outer layer 2 of the air-jet box can be designed into the same profile of the steel rail as the inner layer 401 of the air-jet box, so that high-temperature compressed air can be uniformly sprayed out from the air holes on the inner layer 401 of the steel rail air-jet box.
When the heating and dehumidifying device of the utility model is applied, the steel rail is conveyed to pass through the steel rail air blasting box 4, and the steel rail conveying feed speed is adjusted to 0.2-0.3 m/s; after the wet steel rail passes through the steel rail air blasting box 4, high-temperature compressed air is sprayed through the air holes in the inner layer 401 of the air blasting box, and the designed steel rail air blasting box 4 can spray the high-temperature compressed air to each part of the steel rail body, so that water on the surface of the steel rail is evaporated instantly, and the surface of the steel rail is in a dry state.
Claims (6)
1. The utility model provides a heating dehydrating unit before rail welding which characterized in that: comprises an air compressor, an air storage tank, an air heater and a steel rail air injection box;
the air outlet end of the air compressor is communicated with the air inlet end of the air storage tank through a pipeline; the air outlet end of the air storage tank is connected with the air inlet end of the air heater through a pipeline; the air outlet end of the air heater is connected with the air inlet end of a main air inlet pipe of the steel rail air blasting box through a pipeline;
the steel rail air blasting box is of a double-layer tubular pile structure with an inner air blasting box layer and an outer air blasting box layer, and a closed air cavity is formed between the inner air blasting box layer and the outer air blasting box layer; the inner layer of the air injection box is evenly distributed with air holes.
2. A heating and dehumidifying device for use before rail welding according to claim 1, wherein: a pressure regulating valve is arranged on a pipeline at the air outlet end of the air storage tank; and a pressure gauge is arranged on a pipeline at the air outlet end of the air heater.
3. A heating and dehumidifying device for use before rail welding according to claim 1, wherein: the longitudinal section of the inner layer of the air blasting box is matched with the longitudinal section of the steel rail in shape to form a steel rail profile which is used for penetrating through the wet steel rail.
4. A heating and dehumidifying device for use before rail welding according to claim 1, wherein: the longitudinal height of the inner layer of the air blasting box is designed to be 226mm, the width of the bottom is 210mm, and the width of the waist is 40 mm.
5. A heating and dehumidifying device for use before rail welding according to claim 1, wherein: the diameter of the air hole is phi 3 mm.
6. A heating and dehumidifying device for use before rail welding according to claim 1, wherein: the front and back positions of the upper part of the outer layer of the air-jet box on the left and right sides of the steel rail air-jet box are provided with upper air inlets; lower air inlets are arranged at the front and rear positions of the lower part of the outer layer of the air-jet box at the left and right sides of the steel rail air-jet box; the front and back positions of the outer layer of the air-jet box at the bottom of the steel rail air-jet box are provided with bottom air inlets; the upper air inlet, the lower air inlet and the bottom air inlet are communicated with the main air inlet pipe through air inlet branch pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124198.5U CN212030158U (en) | 2020-01-19 | 2020-01-19 | Heating and dehumidifying device used before steel rail welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124198.5U CN212030158U (en) | 2020-01-19 | 2020-01-19 | Heating and dehumidifying device used before steel rail welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212030158U true CN212030158U (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020124198.5U Active CN212030158U (en) | 2020-01-19 | 2020-01-19 | Heating and dehumidifying device used before steel rail welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369061A (en) * | 2021-06-21 | 2021-09-10 | 中铁十一局集团桥梁有限公司 | Automatic spraying machine for waterproof paint |
-
2020
- 2020-01-19 CN CN202020124198.5U patent/CN212030158U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369061A (en) * | 2021-06-21 | 2021-09-10 | 中铁十一局集团桥梁有限公司 | Automatic spraying machine for waterproof paint |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221014 Address after: 100000F12, Block A, Dingxing Building, No. 5 Fenghuangzui Road, Fengtai District, Beijing Patentee after: CHINA RAILWAY MATERIALS TECHNOLOGY Co.,Ltd. Patentee after: China Railway Material General operation and Maintenance Technology Co.,Ltd. Address before: 13 / F, block C, Guohai Plaza, 17 Fuxing Road, Haidian District, Beijing 100031 Patentee before: CHINA RAILWAY MATERIALS TECHNOLOGY Co.,Ltd. |