CN219779587U - Portable operation device for overhauling metal parts of power station - Google Patents
Portable operation device for overhauling metal parts of power station Download PDFInfo
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- CN219779587U CN219779587U CN202320311039.XU CN202320311039U CN219779587U CN 219779587 U CN219779587 U CN 219779587U CN 202320311039 U CN202320311039 U CN 202320311039U CN 219779587 U CN219779587 U CN 219779587U
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- metal parts
- separation block
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 40
- 239000002184 metal Substances 0.000 title claims abstract description 40
- 238000000926 separation method Methods 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910001245 Sb alloy Inorganic materials 0.000 claims description 3
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 3
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 claims description 3
- 239000002140 antimony alloy Substances 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 230000005347 demagnetization Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims description 3
- 229910000889 permalloy Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 16
- 238000003466 welding Methods 0.000 abstract description 11
- 238000007689 inspection Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 8
- 230000001788 irregular Effects 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model provides a portable operation device for overhauling a metal part of a power station, which comprises a base, a base and a base, wherein the base is used for being adsorbed and fixed on the outer wall of the metal part to be overhauled; symmetrically arranged hinges are fixedly arranged on the outer side wall of the base through bolts, and pedals are rotatably arranged on the hinges through bearings; hooks which are symmetrically arranged are arranged on the end surfaces of two sides of the pedal, the hooks are combined with pull rod hooks hinged on the outer side wall of the base, and the pedal is hinged on the outer wall of the base at a fixed angle; the pedal is provided with a plurality of groups of hanging holes which are arranged in parallel, and binding bands are connected between the adjacent hanging holes. The device can be used as an auxiliary device for rapidly treating the defects of the metal parts, and effectively solves the problems of long time consumption, low efficiency, equipment damage and the like caused by erecting a scaffold or welding a corner block.
Description
Technical Field
The utility model relates to the technical field of power station equipment overhaul, in particular to a portable operation device for power station metal part overhaul.
Background
The metal parts of the power station are subjected to fatigue damage or failure damage under the actions of high temperature and high pressure and cyclic load for a long time, scheduled maintenance is required to be carried out regularly, and the base metal, the welding line and the like of the main stressed part are mainly inspected and evaluated for safety.
Thermal power stations regularly carry out inspection or detection on metal components such as a boiler heating surface, a header, four pipelines and the like, and a large number of scaffold platforms are required to be erected to enable inspection staff to reach designated positions so as to carry out corresponding inspection work. However, in order to inspect a small spot, a lot of manpower and material costs are required. When the rotating wheel of the hydropower station detects, the tail water overhauling platform is erected and disassembled, and the work occupies very large proportion of the whole overhauling workload. The mixed-flow water turbine often has defects such as cracks, pits and the like at the positions of the upper crown and the lower ring R of the rotating wheel, and if the defects are not treated in time, the efficiency and the equipment safety of the unit are greatly influenced. The power station can also need to be salvaged after the metal part is invalid, whether the power station is planned to overhaul or is in temporary stop to repair, strict requirements are met on the processing time, and the defects are processed in the shortest time so as to avoid electric quantity loss.
When a metal part is inspected or subjected to defect repair, a common mode that a technician reaches a designated position is to set up a scaffold platform, and for a position which is difficult to reach by the scaffold, a corner block is welded on the surface of the metal part, and the technician steps on the corner block to observe or construct. However, this approach has the disadvantages of long time consumption and low economy, and the welding and cutting of corner blocks will cause damage to the metal parts. Taking the defect repair of the turbine runner as an example: defects such as penetrating cracks, corrosion pits, partial cavitation corrosion and the like often appear at the positions of the upper crown weld joint, the R angle of the upper crown and the lower ring and the water outlet edge of the blade of the mixed-flow turbine runner, and the common treatment mode is to repair the defects.
For penetrating cracks with longer length and positioned at the R angle of the upper crown, the treatment process generally comprises the steps of firstly removing cracks with a certain depth from one surface of the blade, then performing repair welding, then thoroughly back gouging the cracks from the other surface of the blade, then performing repair welding, and finally polishing the surface to restore the molded line. The constructor stands on the runner maintenance platform to treat the crack on the back surface of the blade generally has no problem, but for the crack on the back surface of the blade, the constructor can not stand on the maintenance platform to treat the crack, the position space of the crack is relatively narrow and irregular, and more limits exist on the construction view angle and the operation space. Generally, the angle plates are welded on the surface of the upstream surface of the blade, constructors step on the angle plates for construction, and after the crack is dug and repaired, the angle plates are cut one by one and then the surface is polished. The main disadvantage of this treatment is to inspect the running wheel with good running condition of the unit, and because of setting up and dismantling the maintenance platform, precious maintenance resources are occupied. When the defect is processed, the maintenance period is prolonged due to the fact that the angle plates are welded and cut on the surfaces of the blades, and residual welding defects on the surfaces of the blades after the angle plates are cut can be gradually exposed in the long-term running process of the unit, so that potential safety hazards of equipment are caused. Meanwhile, because the direction and the position of the foot plate are relatively fixed, a constructor is difficult to obtain a better visual field and an operation space, and the repair quality is possibly caused to be problematic.
Disclosure of Invention
The portable operation device for overhauling the metal parts of the power station can be used as an auxiliary device for rapidly processing the defects of the metal parts, and the problems of long time consumption, low efficiency, equipment damage and the like caused by erecting a scaffold or welding a corner block are effectively solved; in addition, the device has the characteristics of safety, reliability, convenient disassembly and repeated use, is suitable for the inspection and defect treatment of various metal parts of a power station, and is particularly suitable for inspecting metal parts with irregular space areas or irregular surface shapes.
In order to achieve the technical characteristics, the aim of the utility model is realized in the following way: the portable operation device for overhauling the metal parts of the power station comprises a base which is used for being adsorbed and fixed on the outer wall of the metal parts to be overhauled; symmetrically arranged hinges are fixedly arranged on the outer side wall of the base through bolts, and pedals are rotatably arranged on the hinges through bearings; hooks which are symmetrically arranged are arranged on the end surfaces of two sides of the pedal, the hooks are combined with pull rod hooks hinged on the outer side wall of the base, and the pedal is hinged on the outer wall of the base at a fixed angle; the pedal is provided with a plurality of groups of hanging holes which are arranged in parallel, and binding bands are connected between the adjacent hanging holes.
The base consists of a soft magnet, a round hole, a bar magnet and a knob switch; the base is divided into an upper half part and a lower half part by a middle separation block positioned in the middle part and is symmetrically arranged; the upper half part is divided into two parts which are symmetrically arranged through an upper separation block positioned at the middle part; the lower half part is divided into two parts which are symmetrically arranged through a lower separation block positioned at the middle part;
the base is provided with a round hole in the middle of the upper separation block and the lower separation block, a bar magnet is rotatably arranged in the round hole, and a rotary switch for rotating the bar magnet is arranged at the end part of the bar magnet.
The bottom of the base is a plane or a curved surface with a certain angle, so that the base can be tightly attached to the working surface.
The pull rod is provided with a plurality of hook holes which are matched with the hooks and are arranged at equal intervals; the binding band adopts an elastic rope.
The soft magnet is made of a material with quick magnetization and demagnetization.
The soft magnet adopts silicon steel sheet, permalloy or ferrite.
The round hole tip processing has the internal thread, is cylindrically, makes bar magnet can free rotation, and the round hole tip processing has the screw thread, cooperatees with the knob switch.
The upper separation block, the middle separation block and the lower separation block are made of non-magnetic materials.
The upper separation block, the middle separation block and the lower separation block are made of brass, aluminum zinc alloy or lead-antimony alloy.
The knob switch inner ring is provided with external threads, the external threads are matched with the internal threads at the end part of the round hole, when the knob switch is screwed, the N-S pole direction of the bar magnet is perpendicular to the middle separation block, and when the knob switch is unscrewed, the N-S pole direction of the bar magnet is parallel to the middle separation block.
The utility model has the following beneficial effects:
1. the operation device can effectively solve the problems of prolonged maintenance period, poor repair quality, welding defects and the like caused by the fact that a large number of scaffolds and welding corner blocks are required to be erected due to irregular inspection space or irregular surface shape of the part in the process of inspecting the metal part and repairing the defects of the power station.
2. The utility model designs a portable device for overhauling a metal part of a power station, which is used for assisting in overhauling the metal part of the power station, and when the irregular or irregularly-shaped part of an inspection space is inspected and constructed, a technician can obtain a better observation view angle and construction posture by adjusting the position and the direction of the device, so that the inspection and construction quality is ensured.
3. Compared with the traditional overhaul mode, the device has the characteristics of safety, reliability, convenient disassembly and repeated utilization, can greatly improve the working efficiency, saves a great deal of time, labor and production cost, and has very wide applicability and very good economy.
Drawings
The utility model is further described below with reference to the drawings and examples.
Fig. 1 is a three-dimensional view of the present utility model.
In the figure: the pedal comprises a base 1, a pedal 2, a hinge 3, a bearing 4, a bolt 5, a hook 6, a pull rod 7, a hanging hole 8, a binding belt 9, a soft magnet 11, a round hole 12, a bar magnet 13, a lower separation block 14, a knob switch 15, a middle separation block 16 and an upper separation block 17;
a first hanging hole 81, a second hanging hole 82, a third hanging hole 84, and a fourth hanging hole 85.
Detailed Description
Example 1:
referring to fig. 1, a portable working device for overhauling a metal part of a power station comprises a base 1 for being adsorbed and fixed on the outer wall of the metal part to be overhauled; symmetrically arranged hinges 3 are fixedly arranged on the outer side wall of the base 1 through bolts 5, and pedals 2 are rotatably arranged on the hinges 3 through bearings 4; hooks 6 which are symmetrically arranged are arranged on the end surfaces of two sides of the pedal 2, the hooks 6 are hooked and combined with a pull rod 7 hinged on the outer side wall of the base 1, and the pedal 2 is hinged on the outer wall of the base 1 at a fixed angle; the pedal 2 is provided with a plurality of groups of hanging holes 8 which are arranged in parallel, and binding bands 9 are connected between the adjacent hanging holes 8. By adopting the operation device, the problems of prolonged maintenance period, poor repair quality, welding defects and the like caused by the fact that a large number of scaffolds and welding corner blocks are required to be erected due to irregular inspection space or irregular surface shape of the part in the process of inspecting and repairing the metal parts of the power station can be effectively solved. In the concrete installation and use process, the pedal 2 is convenient for operators to stand by adsorbing and fixing the pedal on the outer wall of the metal part to be overhauled by magnetic force.
Further, the base 1 is composed of a soft magnet 11, a round hole 12, a bar magnet 13 and a knob switch 15; the base 1 is divided into an upper half part and a lower half part by a middle dividing block 16 positioned at the middle part and is symmetrically arranged; the upper half part is divided into two parts which are symmetrically arranged through an upper dividing block 17 positioned at the middle part; the lower half is divided into two symmetrically arranged parts by a lower dividing block 14 positioned at the middle part. The base 1 is provided with a round hole 12 at the middle part of the upper separation block 17 and the lower separation block 14, a bar magnet 13 is rotatably arranged in the round hole 12, and a rotary switch 15 for rotating the bar magnet 13 is arranged at the end part of the bar magnet 13. Magnetic force can be generated through the base 1, and then the whole base 1 is fixed on the outer wall of the metal part to be overhauled through magnetic force adsorption. And further ensures the reliability and stability of magnetic force adsorption.
Furthermore, the bottom of the base 1 is a plane or a curved surface with a certain angle, so that the base is tightly attached to the working surface. Through foretell curved surface structural style, guaranteed that base 1 can be fine adaptation on the metal part outer wall that waits to overhaul of different appearance structures, and then strengthened its adaptability.
Further, the soft magnetic body 11 is made of a material having magnetization and demagnetization speed. By adopting the soft magnet 11, the magnetic force lines can be closed, and the whole base 1 is fixed on the outer wall of the metal part to be overhauled.
Further, the soft magnetic body 11 is made of silicon steel sheet, permalloy or ferrite. The adaptability is enhanced by the material.
Further, the end of the round hole 12 is provided with an internal thread, and is cylindrical, so that the bar magnet 13 can rotate freely, and the end of the round hole 12 is provided with a thread, and is matched with the knob switch 15. The knob switch 15 can be used for adjusting the angle of the bar magnets 13, so that the two bar magnets 13 can be matched, and then closed magnetic lines of force are formed, thereby achieving the effect of magnetic attraction.
Further, the upper separation block 17, the middle separation block 16 and the lower separation block 14 are made of non-magnetic materials. The magnetic force lines are conveniently controlled to be formed by adopting a non-magnetic conductive material, and finally the effect of magnetic force adsorption is achieved.
Further, the upper separation block 17, the middle separation block 16 and the lower separation block 14 are made of brass, aluminum zinc alloy or lead antimony alloy. The adaptability is enhanced by the material.
Further, an external thread is machined on the inner ring of the knob switch 15 and is matched with the internal thread at the end part of the round hole 12, when the knob switch 15 is screwed, the N-S pole direction of the bar magnet 13 is perpendicular to the middle separation block 16, and when the knob switch 15 is unscrewed, the N-S pole direction of the bar magnet 13 is parallel to the middle separation block 16. Through the rotary matching of the bar magnets 13, magnetic force lines can be regulated conveniently, and finally the purpose of magnetic force adsorption is achieved.
Further, a plurality of equally spaced hook holes matched with the hooks 6 are formed in the pull rod 7; the binding band 9 adopts an elastic rope. Through the plurality of hook holes, the hook position between the pull rod 7 and the hook 6 can be conveniently adjusted, and the aim of adjusting the angle of the pedal 2 is fulfilled.
The application method of the portable operation device for overhauling the metal parts of the power station comprises the following steps:
step one, calculating magnetic attraction force:
according to the type and construction conditions of the metal parts of the power station to be overhauled, a base 1 type device with corresponding matching degree is selected;
step two, selecting mounting points:
selecting device mounting points on a working surface to be overhauled according to the technical requirements of inspection and construction;
step three, mounting the bar magnet 13:
the bar magnets 13 are respectively arranged in round holes 12 of the upper half part and the lower half part of the base 1, so that the threads of the two are crushed;
fourth, adjusting magnetic attraction force:
the knob switches 15 on the upper half part and the lower half part of the base 1 are rotated to enable the N-S pole direction of the bar magnet 13 to be parallel to the middle separation block 16, at the moment, magnetic lines of force form a closed loop in the bar magnet 13, and the base 1 has no magnetic attraction force and can move freely;
step five, fixing the upper half part of the base 1:
the bottom surface of the base 1 is tightly attached to a first mounting point, a knob switch 15 at the upper half part of the base 1 is screwed, the N-S pole direction of the bar magnet 13 is vertical to an upper separation block 17, at the moment, magnetic force lines are conducted from the N pole of the bar magnet 13 to the S pole of the bar magnet 13 through the soft magnet 11 and a workpiece, and strong magnetic attraction force is generated between the base 1 and the workpiece;
step six, fixing the lower half part of the base 1:
step five is carried out on the lower half part of the base 1, and the base 1 is tightly adsorbed on the surface of a workpiece;
step seven, adjusting the position of the pedal 2:
the pedal 2 is rotated downwards to a certain position, and corresponding holes of pull rods 7 at two sides penetrate into hooks 6 at two sides of the pedal 2;
step eight, fixing the steps of the operators:
the person steps on the pedal 2 with feet, the shoes are positioned between two adjacent hanging holes 8, and the front ends of the shoes are bound by using binding bands 9;
step nine, device installation of remaining installation points:
the rest mounting points execute the steps I-eight until reaching the target position;
step ten, personnel exit:
when the personnel withdraw, withdraw from along former mounting point reverse order, unscrew the upper half of base 1 and lower part knob switch 15, make bar magnet 13' S N-S utmost point direction and separate the piece parallel, base 1 magnetic attraction disappears, easily takes off the device, resumes initial condition.
Example 3:
specifically, the method is applied to mixed flow runner top flow channel inspection, personnel stand in the area between the movable guide vane and the runner blade, step 2-step 4 in embodiment 2 are implemented, a first mounting point is selected on the runner top flow channel surface, step 5-step 7 are implemented, and a safety belt is tied on the pull rod 7; and selecting a second mounting point on the upstream surface of the left blade in the standing direction, implementing step 2-step 7 in the embodiment 2, wherein the angle between the pedal 2 and the base 1 is larger than 90 degrees, selecting a third mounting point on the upstream surface of the adjacent blade, implementing step 2-step 7 in the embodiment 2, wherein the angle between the pedal 2 and the base 1 is smaller than 90 degrees, and implementing step 8 in the embodiment 2, so that a person can obtain a better inspection view angle.
Example 4:
specifically, the method is applied to repairing the defects of the runner blades, and the device is arranged from the water inlet side to the water outlet side of the runner to reach the construction position. Step 2 to step 4 in the embodiment 2 are implemented, a first mounting point is selected on the upper edge of the water inlet side of the water facing surface of the defective blade, step 4 to step 6 in the embodiment 2 are implemented, and the safety belt is tied on the pull rod 7; and selecting a second mounting point at the lower side of the first mounting point, implementing the steps 2-7 in the embodiment 2, adjusting the angle between the pedal 2 and the base 1 to be smaller than 90 degrees, implementing the steps 8-9 in the embodiment 2, and enabling a constructor to obtain a better construction space and angle by adjusting the body direction, so that the repair quality is ensured.
Claims (9)
1. The portable operation device for overhauling the metal parts of the power station is characterized by comprising a base (1) which is used for being adsorbed and fixed on the outer wall of the metal parts to be overhauled; the outer side wall of the base (1) is fixedly provided with symmetrically arranged hinges (3) through bolts (5), and the hinges (3) are rotatably provided with pedals (2) through bearings (4); hooks (6) which are symmetrically arranged are arranged on the end surfaces of two sides of the pedal (2), the hooks (6) are hooked and combined with a pull rod (7) hinged on the outer side wall of the base (1), and the pedal (2) is hinged on the outer wall of the base (1) at a fixed angle; the pedal (2) is provided with a plurality of groups of hanging holes (8) which are arranged in parallel, and binding bands (9) are connected between the adjacent hanging holes (8).
2. The portable working device for service of power station metal parts according to claim 1, wherein: the base (1) consists of a soft magnet (11), a round hole (12), a bar magnet (13) and a knob switch (15); the base (1) is divided into an upper half part and a lower half part by a middle dividing block (16) positioned at the middle part and is symmetrically arranged; the upper half part is divided into two parts which are symmetrically arranged through an upper dividing block (17) positioned at the middle part; the lower half part is divided into two parts which are symmetrically arranged through a lower dividing block (14) positioned at the middle part;
the base (1) is provided with a round hole (12) at the middle part of the upper separation block (17) and the lower separation block (14), a bar magnet (13) is rotatably arranged in the round hole (12), and a knob switch (15) for rotating the bar magnet (13) is arranged at the end part of the bar magnet.
3. The portable working device for service of power station metal parts according to claim 2, wherein: the bottom of the base (1) is a plane or a curved surface with a certain angle, so that the base is tightly attached to a working surface;
a plurality of equally spaced hook holes matched with the hooks (6) are formed in the pull rod (7); the binding band (9) adopts an elastic rope.
4. The portable working device for service of power station metal parts according to claim 2, wherein: the soft magnetic body (11) is made of a material with quick magnetization and demagnetization.
5. The portable working device for service of power station metal parts according to claim 2, wherein: the soft magnet (11) is made of silicon steel sheet, permalloy or ferrite.
6. The portable working device for service of power station metal parts according to claim 2, wherein: the end part of the round hole (12) is provided with internal threads, the round hole is cylindrical, the bar magnet (13) can rotate freely, and the end part of the round hole (12) is provided with threads to be matched with the knob switch (15).
7. The portable working device for service of power station metal parts according to claim 2, wherein: the upper separation block (17), the middle separation block (16) and the lower separation block (14) are made of non-magnetic materials.
8. The portable working device for service of power station metal parts according to claim 2, wherein: the upper separation block (17), the middle separation block (16) and the lower separation block (14) are made of brass, aluminum zinc alloy or lead antimony alloy.
9. The portable working device for service of power station metal parts according to claim 2, wherein: the inner ring of the knob switch (15) is provided with external threads, the external threads are matched with internal threads at the end part of the round hole (12), when the knob switch (15) is screwed, the N-S pole direction of the bar magnet (13) is perpendicular to the middle separation block (16), and when the knob switch (15) is unscrewed, the N-S pole direction of the bar magnet (13) is parallel to the middle separation block (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320311039.XU CN219779587U (en) | 2023-02-24 | 2023-02-24 | Portable operation device for overhauling metal parts of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320311039.XU CN219779587U (en) | 2023-02-24 | 2023-02-24 | Portable operation device for overhauling metal parts of power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219779587U true CN219779587U (en) | 2023-09-29 |
Family
ID=88103692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320311039.XU Active CN219779587U (en) | 2023-02-24 | 2023-02-24 | Portable operation device for overhauling metal parts of power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219779587U (en) |
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2023
- 2023-02-24 CN CN202320311039.XU patent/CN219779587U/en active Active
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