CN103196641A - Hot-blast stove leakproofness pressure test method - Google Patents
Hot-blast stove leakproofness pressure test method Download PDFInfo
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- CN103196641A CN103196641A CN2013101051608A CN201310105160A CN103196641A CN 103196641 A CN103196641 A CN 103196641A CN 2013101051608 A CN2013101051608 A CN 2013101051608A CN 201310105160 A CN201310105160 A CN 201310105160A CN 103196641 A CN103196641 A CN 103196641A
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Abstract
Provided is a hot-blast stove leakproofness pressure test method. A cold air pipe blind plate and a hot air pipe blind plate are manufactured, and then an air inlet pipe and an air discharge pipe are arranged on the cold air pipe blind plate in a holing mode. A cold air pipe and a hot air pipe which are connected with a shell are installed on the position of a first valve. An air source pipe is connected with the air inlet pipe on the blind plate, an air inlet ball valve is opened, pressure rises to 50 percent of test pressure slowly and maintained, meanwhile, a hot-blast stove is checked, if the hot-blast stove is checked to be error-free, the pressure rises continuously step by step according to 10 percent of the test pressure, pressure stabilization is carried out on each step for 5 minutes, when the pressure reaches the test pressure, the pressure is maintained for 15 minutes, then the pressure is reduced to work pressure and maintained for 30 minutes, meanwhile, the hot-blast stove is checked, and if deformation and air leakage do not occur, the hot-blast stove is qualified. After the hot-blast stove is qualified through pressure tests, a ball valve on the air discharge pipe on the blind plate is opened. The hot-blast stove leakproofness pressure test method is simple to operate, convenient to construct and high in pressure test efficiency, shortens hot-blast stove leakproofness pressure test time greatly, creates conditions for building and constructing of hot-blast stoves, shortens a construction period and lowers cost.
Description
Technical field
The present invention relates to bulk container tightness pressure test technology field, is a kind of heat generator tightness pressure-measuring method specifically, is particularly useful for bulky housings tightness pressure testings such as heat generator.
Background technology
In the existing metallurgical construction, hot blast stove system is the important process system that matches with blast furnace, the work pressure test of carrying out hot blast stove system is to satisfy the design and use requirement, guarantee that heat generator normally moves when putting into production, avoid because of gas leak influence safety in production, cause casualties and necessity work of economic loss.
Summary of the invention
Purpose of the present invention will overcome the above problems exactly, and a kind of heat generator tightness pressure-measuring method is provided, and can guarantee quality, can shorten the pressure testing time again, reduces cost.
Technical scheme of the present invention is achieved like this: a kind of heat generator tightness pressure-measuring method, be characterized in: make its corresponding cool air hose blind plate and warm-air pipe blind plate according to the cool air hose flange that is connected with the heat generator housing and the size of warm-air pipe flange earlier, cool air hose blind plate and warm-air pipe blind plate are made of δ 16mm steel plate, the end face of cool air hose blind plate and warm-air pipe blind plate carries out grid with δ 14mm gusset and reinforces, open two holes at the cool air hose blind plate again DN25 draft tube and DN50 bleeder pipe are set, 0.4Mpa tensimeter and the DN25 ball valve of assay approval are set on the DN25 draft tube, the DN50 ball valve is set on the DN50 blowdown piping; Cool air hose, the warm-air pipe that will be connected with housing 1 is mounted to first valve location then, treat cool air hose flange, warm-air pipe flange respectively with cool air hose, warm-air pipe firm welding after, cold air duct blind plate, its corresponding flange of hot air duct blind plate made are connected with bolt, and cool air hose flange, warm-air pipe flange are used bolted respectively and after adding the graphite packing between cool air hose blind plate, warm-air pipe blind plate; The hot air duct top is established the tensimeter of an assay approval 0.4Mpa in addition; The source of the gas pipe is connected with DN25 draft tube on the blind plate, open air inlet DN25 ball valve, slowly rise to 50% of test pressure, keep-up pressure and check, confirm that errorless back continues to boost step by step by 10% of test pressure, every grade of voltage stabilizing 5 minutes reached the test pressure pressurize 15 minutes, check not have distortion, do not have gas leakage for qualified being down to the working pressure pressurize after 30 minutes; After treating that pressure testing is qualified, open the DN50 ball valve on the blowdown piping on the blind plate, thereby realize the pressure testing of heat generator tightness; Heat generator tightness pressure-measuring method carries out as follows:
The first step, make blind plate, the turnover feed channel is set: make its corresponding blind plate according to the cool air hose that is connected with heat generator housing 1 and the flange size of warm-air pipe earlier, two blind plates are all made of δ 16mm steel plate, the blind plate end face all carries out grid with δ 14mm gusset and reinforces, perforate arranges DN25 draft tube 7 and DN50 bleeder pipe 8 on the cold air duct blind plate again, 0.4Mpa tensimeter 5 and the DN25 ball valve 6 of assay approval are set on the air inlet pipeline, DN50 ball valve 9 is set on the blowdown piping;
Second step, blind plate is installed: cool air hose 2, the warm-air pipe 10 that will be connected with housing 1 are mounted to first valve location, after treating cool air hose flange 3, warm-air pipe flange 11 and cool air hose 2, warm-air pipe 10 firm welding, cool air hose blind plate 4, the warm-air pipe blind plate 12 its corresponding flanges made are connected with bolt, and cool air hose flange 3, warm-air pipe flange 11 add fastening bolt behind the graphite packing with cool air hose blind plate 4,12 of warm-air pipe blind plates respectively.Hot air duct 10 tops are established the tensimeter 13 of an assay approval 0.4Mpa in addition;
The 3rd step, tightness pressure testing: the source of the gas pipe is connected with draft tube 7 on the blind plate, open air intake valve 6, slowly rise to 50% of test pressure, keep-uping pressure checks, confirms that errorless back continues to boost step by step by 10% of test pressure, every grade of voltage stabilizing 5 minutes, reached the test pressure pressurize 15 minutes, and checked after 30 minutes being down to the working pressure pressurize, do not have distortion, do not have gas leakage for qualified; After treating that pressure testing is qualified, open the DN50 ball valve 9 of blowdown piping on the blind plate, thereby realize the pressure testing of heat generator tightness.
The present invention is simple to operate, easy construction, and pressure testing efficient height has shortened the heat generator tightness pressure testing time greatly, has created condition for the heat generator building construction, has shortened the duration, has reduced cost.
Description of drawings
Fig. 1 is heat generator pressure testing elevation drawing.
Among the figure: 1, heat generator housing 2, cool air hose 3, cool air hose flange 4, cool air hose blind plate 5, tensimeter 6, DN25 ball valve 7, DN25 draft tube 8, DN50 bleeder pipe 9, DN50 ball valve 10, warm-air pipe 11, warm-air pipe flange 12, warm-air pipe blind plate 13, tensimeter.
Embodiment
As shown in Figure 1, the present invention makes its corresponding cool air hose blind plate 4 and warm-air pipe blind plate 12 according to the cool air hose flange 3 that is connected with heat generator housing 1 and the size of warm-air pipe flange 11 earlier, cool air hose blind plate 4 and warm-air pipe blind plate 12 usefulness δ 16mm steel plates are made, the end face of cool air hose blind plate 4 and warm-air pipe blind plate 12 carries out grid with δ 14mm gusset and reinforces, open two holes at cool air hose blind plate 4 again DN25 draft tube 7 and DN50 bleeder pipe 8 are set, 0.4Mpa tensimeter 5 and the DN25 ball valve 6 of assay approval are set on the DN25 draft tube 7, DN50 ball valve 9 is set on the DN50 blowdown piping 8.Cool air hose 2, the warm-air pipe 10 that will be connected with housing 1 is mounted to first valve location then, treat cool air hose flange 3, warm-air pipe flange 11 respectively with cool air hose 2, warm-air pipe 10 firm welding after, cold air duct blind plate 4, the hot air duct blind plate 12 its corresponding flanges made are connected with bolt, cool air hose flange 3, warm-air pipe flange 11 respectively and cool air hose blind plate 4,12 of warm-air pipe blind plates use bolted after adding the graphite packing.Hot air duct 10 tops are established the tensimeter 13 of an assay approval 0.4Mpa in addition.The source of the gas pipe is connected with DN25 draft tube 7 on the blind plate, open air inlet DN25 ball valve 6, slowly rise to 50% of test pressure, keep-up pressure and check, confirm that errorless back continues to boost step by step by 10% of test pressure, every grade of voltage stabilizing 5 minutes reached the test pressure pressurize 15 minutes, check not have distortion, do not have gas leakage for qualified being down to the working pressure pressurize after 30 minutes; After treating that pressure testing is qualified, open the DN50 ball valve 9 on the blowdown piping on the blind plate, thereby realize the pressure testing of heat generator tightness.
Heat generator tightness pressure-measuring method carries out as follows:
The first step is made blind plate, the turnover feed channel is set.Make its corresponding blind plate according to the cool air hose that is connected with heat generator housing 1 and the flange size of warm-air pipe earlier, two blind plates are all made of δ 16mm steel plate, the blind plate end face all carries out grid with δ 14mm gusset and reinforces, perforate arranges DN25 draft tube 7 and DN50 bleeder pipe 8 on the cold air duct blind plate again, 0.4Mpa tensimeter 5 and the DN25 ball valve 6 of assay approval are set on the air inlet pipeline, DN50 ball valve 9 is set on the blowdown piping.
In second step, blind plate is installed.Cool air hose 2, the warm-air pipe 10 that will be connected with housing 1 are mounted to first valve location, after treating cool air hose flange 3, warm-air pipe flange 11 and cool air hose 2, warm-air pipe 10 firm welding, cool air hose blind plate 4, the warm-air pipe blind plate 12 its corresponding flanges made are connected with bolt, and cool air hose flange 3, warm-air pipe flange 11 add fastening bolt behind the graphite packing with cool air hose blind plate 4,12 of warm-air pipe blind plates respectively.Hot air duct 10 tops are established the tensimeter 13 of an assay approval 0.4Mpa in addition.
The 3rd step, the tightness pressure testing.The source of the gas pipe is connected with draft tube 7 on the blind plate, open air intake valve 6, slowly rise to 50% of test pressure, keep-up pressure and check, confirm that errorless back continues to boost step by step by 10% of test pressure, every grade of voltage stabilizing 5 minutes reached the test pressure pressurize 15 minutes, check not have distortion, do not have gas leakage for qualified being down to the working pressure pressurize after 30 minutes; After treating that pressure testing is qualified, open the DN50 ball valve 9 of blowdown piping on the blind plate, thereby realize the pressure testing of heat generator tightness.
Claims (1)
1. heat generator tightness pressure-measuring method, it is characterized in that: make its corresponding cool air hose blind plate and warm-air pipe blind plate according to the cool air hose flange that is connected with the heat generator housing and the size of warm-air pipe flange earlier, cool air hose blind plate and warm-air pipe blind plate are made of δ 16mm steel plate, the end face of cool air hose blind plate and warm-air pipe blind plate carries out grid with δ 14mm gusset and reinforces, open two holes at the cool air hose blind plate again DN25 draft tube and DN50 bleeder pipe are set, 0.4Mpa tensimeter 5 and the DN25 ball valve of assay approval are set on the DN25 draft tube, the DN50 ball valve is set on the DN50 blowdown piping; Cool air hose, the warm-air pipe that will be connected with housing is mounted to first valve location then, treat cool air hose flange, warm-air pipe flange respectively with cool air hose, warm-air pipe firm welding after, cold air duct blind plate, its corresponding flange of hot air duct blind plate made are connected with bolt, and cool air hose flange, warm-air pipe flange are used bolted respectively and after adding the graphite packing between cool air hose blind plate, warm-air pipe blind plate; The hot air duct top is established the tensimeter of an assay approval 0.4Mpa in addition; The source of the gas pipe is connected with DN25 draft tube on the blind plate, open air inlet DN25 ball valve, slowly rise to 50% of test pressure, keep-up pressure and check, confirm that errorless back continues to boost step by step by 10% of test pressure, every grade of voltage stabilizing 5 minutes reached the test pressure pressurize 15 minutes, check not have distortion, do not have gas leakage for qualified being down to the working pressure pressurize after 30 minutes; After treating that pressure testing is qualified, open the DN50 ball valve 9 on the blowdown piping on the blind plate, thereby realize the pressure testing of heat generator tightness; Heat generator tightness pressure-measuring method carries out as follows:
The first step, make blind plate, the turnover feed channel is set: make its corresponding blind plate according to the cool air hose that is connected with the heat generator housing and the flange size of warm-air pipe earlier, two blind plates are all made of δ 16mm steel plate, the blind plate end face all carries out grid with δ 14mm gusset and reinforces, perforate arranges DN25 draft tube and DN50 bleeder pipe on the cold air duct blind plate again, 0.4Mpa tensimeter and the DN25 ball valve of assay approval are set on the air inlet pipeline, the DN50 ball valve is set on the blowdown piping;
Second step, blind plate is installed: cool air hose, the warm-air pipe that will be connected with housing are mounted to first valve location, after treating cool air hose flange, warm-air pipe flange and cool air hose, warm-air pipe firm welding, cool air hose blind plate, its corresponding flange of warm-air pipe blind plate made are connected with bolt, cool air hose flange, warm-air pipe flange respectively and add fastening bolt behind the graphite packing between cool air hose blind plate, warm-air pipe blind plate, the hot air duct top is established the tensimeter of an assay approval 0.4Mpa in addition;
The 3rd step, tightness pressure testing: the source of the gas pipe is connected with draft tube on the blind plate, open air intake valve, slowly rise to 50% of test pressure, keep-uping pressure checks, confirms that errorless back continues to boost step by step by 10% of test pressure, every grade of voltage stabilizing 5 minutes, reached the test pressure pressurize 15 minutes, and checked after 30 minutes being down to the working pressure pressurize, do not have distortion, do not have gas leakage for qualified; After treating that pressure testing is qualified, open the DN50 ball valve of blowdown piping on the blind plate, thereby realize the pressure testing of heat generator tightness.
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| CN2013101051608A CN103196641A (en) | 2013-03-29 | 2013-03-29 | Hot-blast stove leakproofness pressure test method |
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| CN2013101051608A CN103196641A (en) | 2013-03-29 | 2013-03-29 | Hot-blast stove leakproofness pressure test method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231150A (en) * | 2018-03-06 | 2019-09-13 | 兰州兰石重型装备股份有限公司 | A kind of pressure-measuring method of pressure container flange and companion flange |
| CN110887613A (en) * | 2019-12-06 | 2020-03-17 | 华能山东石岛湾核电有限公司 | Sealing detection method for air pressure test of large pressure container |
| CN112484930A (en) * | 2020-12-21 | 2021-03-12 | 山东钢铁集团日照有限公司 | Method for testing air tightness before blow-in of blast furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231150A (en) * | 2018-03-06 | 2019-09-13 | 兰州兰石重型装备股份有限公司 | A kind of pressure-measuring method of pressure container flange and companion flange |
| CN110887613A (en) * | 2019-12-06 | 2020-03-17 | 华能山东石岛湾核电有限公司 | Sealing detection method for air pressure test of large pressure container |
| CN112484930A (en) * | 2020-12-21 | 2021-03-12 | 山东钢铁集团日照有限公司 | Method for testing air tightness before blow-in of blast furnace |
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Application publication date: 20130710 |