CN218136211U - Drilling and removing device for blow pipe temporary pipeline connecting bolt buckled on main throttle flange - Google Patents
Drilling and removing device for blow pipe temporary pipeline connecting bolt buckled on main throttle flange Download PDFInfo
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- CN218136211U CN218136211U CN202222034616.3U CN202222034616U CN218136211U CN 218136211 U CN218136211 U CN 218136211U CN 202222034616 U CN202222034616 U CN 202222034616U CN 218136211 U CN218136211 U CN 218136211U
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Abstract
The utility model discloses a drilling and removing device for a blow pipe temporary pipeline connecting bolt buckled on a main valve flange, which solves the problem of how to safely and quickly remove the bolt left in a bolt hole; a main throttle valve supporting iron plate (4) is arranged on a main throttle valve flange (1) of the steam turbine, a right convex tongue (6) and a left convex tongue (7) are respectively arranged on the main throttle valve supporting iron plate (4), the main throttle valve supporting iron plate (4) is fixed on the main throttle valve flange (1) of the steam turbine by connecting bolts arranged on the two convex tongues, a magnetic electric drill (12) for controlling the stroke of a drill bit by hand is arranged on the main throttle valve supporting iron plate (4), and a drill bit (13) on the magnetic electric drill (12) for controlling the stroke of the drill bit by hand is abutted against the exposed top end surface of a fastened bolt (3); the utility model discloses can demolish fast by the interim bolt of being held in the bolt hole, the time of having practiced thrift, protected the interior knot of screw on the steam turbine main throttle flange.
Description
Technical Field
The utility model relates to a remove device of connecting bolt, in particular to device that removal was bored to the interim pipeline connecting bolt of blowpipe that can't take out on the main throttle.
Background
Before a thermal generator set is installed and put into operation, in order to ensure safe and economic operation of the generator set, purging operation must be carried out on a main steam pipeline and a superheater pipeline in the generator set, so that rust, welding slag, iron oxide and other impurities in the pipelines are discharged out of the pipeline of the generator set under the hypochondriac flushing of high-temperature steam flow; when the operation is carried out on site, a boiler blow pipe temporary pipeline is fixed and sealed on a flange plate of a main throttle valve of the steam turbine by using a temporary bolt, so that high-temperature steam flows enter a generator set through the boiler blow pipe temporary pipeline, and the main steam pipeline and a superheater pipeline are cleaned; after the pipeline of the unit is washed clean through multiple times of pipe blowing operation, connecting bolts on a main throttle flange of the steam turbine connected with a temporary pipeline need to be detached, so that the main throttle flange of the steam turbine is restored to the original state, and the subsequent installation work is completed; because the purging operation is performed at high temperature and high pressure, some bolts and screw holes are tightly combined together after the purging operation is performed at high temperature and high pressure, and cannot be detached; when the situation is met, the cleaning pipeline connected to the main valve flange of the steam turbine is cut off on site, the cleaning pipeline is separated from the main valve flange of the steam turbine, and the phenomenon that connecting bolts which cannot be detached are left in bolt holes is caused by the treatment mode; in the prior art, the bolt is baked by adopting a mode that the air handle is left in the bolt hole, the inner buckle of the bolt hole is easy to damage by the operation method, and the air handle is long in time consumption for baking the bolt, sometimes up to more than ten hours; how to safely remove the bolt left in the bolt hole quickly is a difficult problem to be solved in field operation.
Disclosure of Invention
The utility model provides a by the interim pipeline connecting bolt's of blowpipe boring that is detained device is removed on main valve flange, has solved how swiftly to leave over the technical problem that the bolt safety in the bolt hole was got rid of safely.
The utility model discloses a solve above technical problem through following technical scheme:
a drilling device for a blow pipe temporary pipeline connecting bolt buckled on a main valve flange comprises a main valve flange (1) of a steam turbine, the main valve flange bolt holes (2) are arranged on the main valve flange (1) of the steam turbine at equal intervals in a radian way, a buckled bolt (3) is arranged in one of the main valve flange bolt holes (2), a main valve supporting iron plate (4) is arranged on a main valve flange (1) of the steam turbine, a right convex tongue (6) and a left convex tongue (7) are respectively arranged on the main valve support iron plate (4), the right convex tongue (6) is arranged on the right side of the main valve flange bolt hole where the snapped bolt (3) is positioned, the left convex tongue (7) is arranged on the left side of the main valve flange bolt hole where the snapped bolt (3) is positioned, a right temporary bolt through hole (8) is arranged on the right tongue (6), a right temporary bolt (9) is connected in the right temporary bolt through hole (8) in a penetrating way, the right temporary bolt (9) is screwed with the main valve flange bolt hole (2) on the right side of the engaged bolt (3), a left temporary bolt through hole (10) is arranged on the left tongue (7), a left temporary bolt (11) penetrates through the left temporary bolt penetrating hole (10), and the left temporary bolt (11) is in threaded connection with the main valve flange bolt hole (2) on the left side of the engaged bolt (3); a magnetic electric drill (12) for controlling the drill stroke by hand is arranged on the main throttle supporting iron plate (4), and a drill bit (13) on the magnetic electric drill (12) for controlling the drill stroke by hand is abutted against the exposed top end surface of the engaged bolt (3).
A central mark groove is arranged on the exposed top end surface of the snapped bolt (3), and a drill bit (13) on a magnetic electric drill (12) for controlling the drill bit stroke by hand is abutted in the central mark groove.
After the interim pipeline of blowpipe is cut off, the utility model discloses can demolish fast by the interim bolt of stinging the knot in the bolt hole, practice thrift the time, protect the interior knot of screw on the steam turbine main throttle flange.
Drawings
Fig. 1 is a schematic structural view in a top view direction of the present invention;
fig. 2 is a schematic structural view in the front view direction of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
a drilling device for temporary pipeline connecting bolts of a hooked blowing pipe on a main valve flange comprises a main valve flange (1) of a steam turbine, the main valve flange bolt holes (2) are arranged on the main valve flange (1) of the steam turbine at equal intervals in a radian way, a buckled bolt (3) is arranged in one of the main valve flange bolt holes (2), a main valve supporting iron plate (4) is arranged on a main valve flange (1) of the steam turbine, a right convex tongue (6) and a left convex tongue (7) are respectively arranged on the main valve support iron plate (4), the right convex tongue (6) is arranged on the right side of the main valve flange bolt hole where the snapped bolt (3) is positioned, the left convex tongue (7) is arranged on the left side of the main valve flange bolt hole where the snapped bolt (3) is positioned, a right temporary bolt through hole (8) is arranged on the right tongue (6), a right temporary bolt (9) is connected in the right temporary bolt through hole (8) in a penetrating way, the right temporary bolt (9) is screwed with the main valve flange bolt hole (2) on the right side of the engaged bolt (3), a left temporary bolt through hole (10) is arranged on the left tongue (7), a left temporary bolt (11) penetrates through the left temporary bolt penetrating hole (10), and the left temporary bolt (11) is in threaded connection with the main valve flange bolt hole (2) on the left side of the engaged bolt (3); a magnetic electric drill (12) for controlling the drill stroke by hand is arranged on the main throttle supporting iron plate (4), and a drill bit (13) on the magnetic electric drill (12) for controlling the drill stroke by hand is abutted against the exposed top end surface of the engaged bolt (3).
A central marking groove is arranged on the top end surface of the exposed part of the engaged bolt (3), and a drill bit (13) on a magnetic electric drill (12) for controlling the drill bit stroke by hand is abutted in the central marking groove.
Fixing and sealing a boiler blowing pipe temporary pipeline on a flange plate of a main throttle valve of the steam turbine by using a temporary bolt, and allowing high-temperature steam to enter a generator set through the boiler blowing pipe temporary pipeline to clean a main steam pipeline and a superheater pipeline; after the operation is finished, when temporary bolts between a boiler blowpipe temporary pipeline and a flange plate of a main throttle of a steam turbine are dismounted, if a certain bolt is buckled, and the boiler blowpipe temporary pipeline is difficult to dismount, the boiler blowpipe temporary pipeline can be removed only in a hot cutting mode, and the buckled temporary bolts are left in bolt holes; according to the inner diameter of a thread buckle on the buckled temporary bolt, a drill bit (13) with the same diameter is selected; then, a main throttle valve supporting iron plate (4) is processed, the size of the main throttle valve supporting iron plate can be supported on a main throttle valve of the steam turbine, a left temporary bolt through hole (10) is butted on a main throttle valve flange bolt hole on the left side of the snap-in temporary bolt, a right temporary bolt through hole (8) is butted on a main throttle valve flange bolt hole on the right side of the snap-in temporary bolt, the snap-in temporary bolt is arranged between a right convex tongue (6) and a left convex tongue (7), connecting bolts are respectively penetrated in the left temporary bolt through hole (10) and the right temporary bolt through hole (8), and the main throttle valve supporting iron plate (4) is fixed on a main throttle valve flange (1) of the steam turbine; adsorbing a magnetic electric drill (12) on a main throttle supporting iron plate (4), aligning a drill bit (13) with a gripped bolt (3), after the electric drill is started, downwards pushing a control drill bit (13) through a hand wheel on the magnetic electric drill, drilling the gripped bolt (3), dismounting a rod piece drilling pin in a screw thread of the gripped bolt (3), then pulling out the drill bit (13), and finally taking out spiral residues still left in the internal thread of a threaded hole; the utility model discloses a this kind of operation method can be taken out from the bolt hole by the snap bolt (3), has protected the interior spiral shell of threaded hole again and has buckled at this process and not damaged.
Claims (2)
1. A drilling device for a blow pipe temporary pipeline connecting bolt buckled on a main valve flange comprises a main valve flange (1) of a steam turbine, the main valve flange bolt holes (2) are arranged on the main valve flange (1) of the steam turbine at equal intervals in radian, a buckled bolt (3) is arranged in one of the main valve flange bolt holes (2), it is characterized in that a main throttle valve supporting iron plate (4) is arranged on a main throttle valve flange (1) of the steam turbine, a right convex tongue (6) and a left convex tongue (7) are respectively arranged on the main valve support iron plate (4), the right convex tongue (6) is arranged on the right side of the main valve flange bolt hole where the snapped bolt (3) is positioned, the left convex tongue (7) is arranged on the left side of the main valve flange bolt hole where the snapped bolt (3) is positioned, a right temporary bolt through hole (8) is arranged on the right tongue (6), a right temporary bolt (9) is connected in the right temporary bolt through hole (8) in a penetrating way, the right temporary bolt (9) is screwed with the main valve flange bolt hole (2) on the right side of the engaged bolt (3), a left temporary bolt through hole (10) is arranged on the left tongue (7), a left temporary bolt (11) penetrates through the left temporary bolt penetrating hole (10), and the left temporary bolt (11) is in threaded connection with the main valve flange bolt hole (2) on the left side of the engaged bolt (3); a magnetic electric drill (12) for controlling the drill stroke by hand is arranged on the main throttle supporting iron plate (4), and a drill bit (13) on the magnetic electric drill (12) for controlling the drill stroke by hand is abutted against the exposed top end surface of the engaged bolt (3).
2. A device for drilling out a temporary pipeline connection bolt of a blow pipe which is snapped on a main valve flange according to claim 1, characterized in that a central marking groove is arranged on the exposed top end surface of the snapped bolt (3), and a drill bit (13) of a magnetic electric drill (12) which controls the stroke of the drill bit by hand is abutted in the central marking groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222034616.3U CN218136211U (en) | 2022-08-03 | 2022-08-03 | Drilling and removing device for blow pipe temporary pipeline connecting bolt buckled on main throttle flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222034616.3U CN218136211U (en) | 2022-08-03 | 2022-08-03 | Drilling and removing device for blow pipe temporary pipeline connecting bolt buckled on main throttle flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218136211U true CN218136211U (en) | 2022-12-27 |
Family
ID=84597118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222034616.3U Active CN218136211U (en) | 2022-08-03 | 2022-08-03 | Drilling and removing device for blow pipe temporary pipeline connecting bolt buckled on main throttle flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218136211U (en) |
-
2022
- 2022-08-03 CN CN202222034616.3U patent/CN218136211U/en active Active
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