CN210293549U - Tuyere pressure test blind plate structure of Ou metallurgical furnace - Google Patents
Tuyere pressure test blind plate structure of Ou metallurgical furnace Download PDFInfo
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- CN210293549U CN210293549U CN201921312618.6U CN201921312618U CN210293549U CN 210293549 U CN210293549 U CN 210293549U CN 201921312618 U CN201921312618 U CN 201921312618U CN 210293549 U CN210293549 U CN 210293549U
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- blind plate
- gusset
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- rib plate
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Abstract
The utility model discloses an air port pressure testing blind plate structure of ou ye stove, including the stove wall steel sheet and install the big set of big flange on the stove wall steel sheet, through bolted connection pressure testing blind plate flange on the big set of big flange, the outer terminal surface of pressure testing blind plate flange is gone up inside and outside full weld and is being connected a circular cone, and the outside end of circular cone is setting up blind plate lid, and the inside and outside full weld respectively on the surface of blind plate lid is setting up gusset one, gusset two, gusset three, gusset four, wherein gusset three, gusset four are the cross and arrange. The utility model discloses can solve the problem of frequent dismouting tuyere cover, practice thrift repair time, improve production efficiency.
Description
Technical Field
The utility model relates to a tuyere pressure testing blind plate structure of Ou smelt stove.
Background
After the intermediate maintenance or the overhaul of the Euro-metallurgical furnace or the blast furnace, an air tightness test needs to be carried out before the furnace is opened so as to detect the sealing strength of a gas pipeline and equipment and ensure that a gas system has no leakage after the furnace is opened and no serious accident of emergency stop is caused. The preparation work for opening the furnace is carried out according to the following sequence: baking furnace → cooling furnace → pressure test → sleeper filling → installing tuyere big sleeve. When the sleeper is filled, people need to frequently enter the furnace to pave the sleeper, before the sleeper is filled by pressure testing, the air port sleeve needs to be installed by pressure testing, the air port sleeve needs to be disassembled when the sleeper is filled, the maintenance time is prolonged by frequently disassembling and assembling the air port sleeve, and manpower and material resources are wasted. Particularly, after the cooling of the stove, the euler stove needs to perform a nitrogen-oxygen switching blowing-down experiment, so that a device and a technology which can conveniently and quickly replace a tuyere sleeve are adopted, the pressure test and sleeper safety are ensured without frequently dismounting the tuyere sleeve, and the purpose of saving maintenance time is achieved.
Disclosure of Invention
An object of the utility model is to provide an Ou smelt stove's wind gap pressure testing blind plate structure can solve the problem of frequent dismouting wind gap cover, practices thrift repair time, improves production efficiency.
The utility model aims at realizing like this, a tuyere pressure testing blind plate structure of ou smelt stove, including the stove wall steel sheet and install the big set of big flange on the stove wall steel sheet, through bolted connection pressure testing blind plate flange on the big set of big flange, a circular cone is being connected to inside and outside full weld on the outer terminal surface of pressure testing blind plate flange, and the outside end of circular cone is setting up blind plate lid, and the inside and outside full weld respectively on the surface of blind plate lid is setting up gusset one, gusset two, gusset three, gusset four, wherein gusset three, gusset four is the cross and arranges, gusset one, gusset two are inside and outside concentric ring shape and arrange.
The device is mainly characterized in that a flange depending on a tuyere large sleeve is manufactured, is matched with a tuyere large sleeve arranged on a furnace wall in the same specification and size, is connected through bolts and is tightly arranged on the upper part of the large flange of the tuyere large sleeve.
And the side surface of the pressure test blind flange is welded with a large-size section of a cone frustum, and the welding requirements are full welding and internal and external welding. The small-size end face of the cone frustum is welded with the blind plate cover, and the welding requirements are full welding and internal and external welding. In order to improve the strength of the inner surface and the outer surface of the blind plate cover, rib plates are welded on the inner surface and the outer surface of the blind plate cover, the rib plates are arranged on the basis of the center of the blind plate cover, welding is distributed in a cross manner, and the welding requirement is that two ends are fully welded. When needing the pressure testing, can not install the big cover earlier, will the utility model discloses pass through the supporting installation of bolted connection with big set of flange, compress tightly. The utility model discloses be pressure vessel head form design, have high pressure resistant function, take welding seam double-sided welding simultaneously, the blind plate lid adopts cross gusset to strengthen the atress, and appearance characteristic has can bear bigger pressure than ordinary blind plate, and fail safe nature is higher. Before the pressure test of the Ou metallurgical furnace or the blast furnace, the pressure test blind plate is connected through the bolts and installed on the flange of the large sleeve, and the air tightness test can be carried out after the bolts are fastened.
Use this device to carry out the gas tightness test after, can practice thrift the repair time, and this device simple manufacture, safe and reliable, if carry out airtight experiment dismouting at the ou metallurgical stove and once the big cover needs 16h, the dismouting needs 48h for 3 times, and this device of installation only needs 2h, can practice thrift repair time 30 hours, if ou metallurgical stove is carrying out the nitrogen oxygen and switches and baker, frequent dismouting wind gap, the repair time of saving can be longer.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of the structure of the present invention;
fig. 2 is a schematic side view of the present invention.
Detailed Description
The utility model provides a wind gap pressure testing blind plate structure of ou smelt stove, as shown in figure 1, figure 2, including furnace wall steel sheet 1 and install the big set of large flange 2 on furnace wall steel sheet 1, pressure testing blind plate flange 3 is being connected through bolt 4 on the big set of large flange 2, a circular cone 5 is being connected to full welding inside and outside on the outer terminal surface of pressure testing blind plate flange 3, the outside end of circular cone 5 is setting up blind plate lid 6, full welding respectively is setting up gusset one 7 on the inside and outside surface of blind plate lid 6, gusset two 8, gusset three 9, gusset four 10, wherein gusset three 9, gusset four 10 are the cross and arrange, gusset one 7, gusset two 8 are inside and outside concentric ring shape and arrange.
Claims (1)
1. The utility model provides a wind gap pressure testing blind plate structure of ou ye stove, includes the brickwork steel sheet and installs the big flange of cover on the brickwork steel sheet, characterized by: the large-sleeve large flange is connected with a pressure test blind flange through a bolt, the outer end face of the pressure test blind flange is internally and externally connected with a cone frustum in a full welding mode, a blind plate cover is arranged at the outer end of the cone frustum, and a rib plate I, a rib plate II, a rib plate III and a rib plate IV are respectively arranged on the inner surface and the outer surface of the blind plate cover in a full welding mode, wherein the rib plate III and the rib plate IV are arranged in a cross mode, and the rib plate I and the rib plate II are arranged in an internal and external concentric circular mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312618.6U CN210293549U (en) | 2019-08-14 | 2019-08-14 | Tuyere pressure test blind plate structure of Ou metallurgical furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312618.6U CN210293549U (en) | 2019-08-14 | 2019-08-14 | Tuyere pressure test blind plate structure of Ou metallurgical furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210293549U true CN210293549U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921312618.6U Active CN210293549U (en) | 2019-08-14 | 2019-08-14 | Tuyere pressure test blind plate structure of Ou metallurgical furnace |
Country Status (1)
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| CN (1) | CN210293549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2019
- 2019-08-14 CN CN201921312618.6U patent/CN210293549U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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