CN219351089U - Maintenance platform for vertical secondary filter screen of power station - Google Patents
Maintenance platform for vertical secondary filter screen of power station Download PDFInfo
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- CN219351089U CN219351089U CN202223269038.8U CN202223269038U CN219351089U CN 219351089 U CN219351089 U CN 219351089U CN 202223269038 U CN202223269038 U CN 202223269038U CN 219351089 U CN219351089 U CN 219351089U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model belongs to the technical field of mechanical design, and particularly relates to an overhaul platform for a vertical secondary filter screen of a power station, which comprises a special small ladder, a lifting appliance, an overhaul platform main body, a clamp and a lifting ring, wherein the overhaul platform main body comprises a middle area platform module and an edge platform module; the middle area platform module is connected with the edge platform module through a clamp; hanging rings are symmetrically and fixedly connected to the middle area platform module, and the hanging tool is installed on the middle area platform module through the hanging rings; the special small ladder is arranged on one side of the overhaul platform main body and used for installing the overhaul platform. The device can effectively improve the field working efficiency, avoid the construction of the scaffold and reduce the industrial safety risk in the operation process.
Description
Technical Field
The utility model belongs to the technical field of mechanical design, and particularly relates to an overhaul platform for a vertical secondary filter screen of a power station.
Background
The Tian Wan nuclear power station three-phase engineering single unit is designed with 6 vertical secondary filter screens which are arranged at the seawater inlet side of the condenser and are used for removing marine organisms and other solid foreign matters in circulating water of the condenser. The secondary filter screen of the vertical structure can utilize gravity to enhance the pollution discharge effect, saves the space cost, and improves the difficulty of disassembly and overhaul.
Traditional maintenance mode is that personnel utilize the rope ladder to descend circulating water pipeline bottom, and the scaffold work platform is built step by step from pipeline bottom to the top, and this mode is built and the material transportation degree of difficulty is high, and work cycle is long, and is very big at the risk of building in-process damage pipeline anticorrosive coating.
Disclosure of Invention
The utility model aims to provide an overhaul platform for a vertical secondary filter screen of a power station, which is of a pure mechanical structure, adopts a high-strength special aluminum alloy material to manufacture a modularized overhaul platform, and is assembled by taking an I-shaped steel supported by a secondary filter screen bin partition plate as a lifting point for installing the overhaul platform, connecting the I-shaped steel through a lifting appliance with adjustable height and utilizing a clamp and a bolt to match the lifting point. The device can effectively improve on-site work efficiency, avoid scaffold building, and reduce industrial safety risk in the operation process.
The technical scheme for realizing the purpose of the utility model comprises the following steps:
the maintenance platform comprises a special small ladder, a lifting appliance, a maintenance platform main body, a clamp and a lifting ring, wherein the maintenance platform main body comprises a middle area platform module and an edge platform module; the middle area platform module is connected with the edge platform module through a clamp; hanging rings are symmetrically and fixedly connected to the middle area platform module, and the hanging tool is installed on the middle area platform module through the hanging rings; the special small ladder is arranged on one side of the overhaul platform main body and used for installing the overhaul platform.
The maintenance platform further comprises a bolt, and the edge platform module is connected with the central area platform module through the bolt.
The main body of the lifting appliance is a safety rope, the upper part of the lifting appliance is connected with an anti-falling safety hook, and the lower part of the lifting appliance is connected with a screw rod structure with adjustable length.
The special small ladder comprises a vertical supporting piece, an upper arc-shaped piece and a lower platform, wherein the upper arc-shaped piece and the lower platform are perpendicular to the vertical supporting piece, the upper arc-shaped piece and the lower platform are respectively located on two sides of the vertical supporting piece, the upper arc-shaped piece is connected with the vertical supporting piece, and the lower platform is connected with the vertical supporting piece.
The upper arc-shaped piece is connected with the vertical supporting piece through welding.
The lower platform is connected with the vertical support member by a hinge.
The edge periphery of the edge platform module is provided with a plastic material protective sleeve.
And a skirting board structure is arranged on the periphery of the edge platform module.
Two handles are mounted on each of the middle region platform module and the edge platform module.
The middle area platform module comprises a platform module A, a platform module B and a platform module D, the edge platform module comprises a platform module C, a platform module E, a platform module F and a platform module G, the platform module A, the platform module B and the platform module D are located in the middle area of the overhaul platform main body, the platform module C, the platform module E, the platform module F and the platform module G are located in the peripheral area of the overhaul platform main body, adjacent platform modules are connected through clamps, and the platform module C and the platform module F are respectively connected with the platform module A through bolts.
The beneficial technical effects of the utility model are as follows:
1. according to the maintenance platform for the vertical secondary filter screen of the power station, provided by the utility model, the fixture, the bolt and the platform are integrated through modularized assembly design of the maintenance platform, so that the design is exquisite, the installation is convenient, the modularized structural design has a certain popularization significance, and a beneficial thought can be provided for the design of a working platform with similar working conditions.
2. The lifting appliance design used in the overhaul platform of the vertical secondary filter screen of the power station provided by the utility model can be used for adjusting the height of the platform, and can be properly adjusted according to reality according to different working conditions on site, so that the vertical secondary filter screen has wider adaptability.
3. According to the overhaul platform for the vertical secondary filter screen of the power station, provided by the utility model, the skirting board is designed at the edge of the platform in detail design, so that tools and parts can be effectively prevented from falling in the operation process. The plastic protection is arranged on the periphery of the platform, so that equipment, an anticorrosive coating in a pipeline and the like can be effectively protected. Compared with the traditional platform, the detail design has higher safety and practicability.
4. According to the special small ladder provided by the utility model, the arc-shaped part at the upper part of the special small ladder used in the overhaul platform of the vertical secondary filter screen of the power station is clamped with the round manhole, the lower platform is hinged and unfolded, the lower platform and the vertical supporting part are just in steel-to-steel contact and fixed, the stress is supported, the overlarge stress of the hinge is avoided, the reliability of the special small ladder is improved, and the folding is convenient.
5. The maintenance platform for the vertical secondary filter screen of the power station is common in manufacturing materials and low in cost; the volume is small, the stacking placement is realized, and the transportation is convenient; the scattered parts are few, and the parts are not easy to lose.
6. According to the overhaul platform for the vertical secondary filter screen of the power station, the tool can be disassembled and assembled through the cooperation of two persons when the overhaul platform is installed, and the installation or the disassembly of a single platform can be completed within two hours; meanwhile, the maintenance platform after the installation is finished can form a complete circle, and the risk of foreign matter falling is reduced.
Drawings
FIG. 1 is a perspective view of an overhaul platform for a vertical secondary filter screen of a power station, provided by the utility model;
FIG. 2 is a top view of an inspection platform for a vertical secondary screen of a power station according to the present utility model;
FIG. 3 is a front view of an inspection platform for a vertical secondary screen of a power station, provided by the utility model;
FIG. 4 is a side view of an inspection platform for a vertical secondary screen of a power station provided by the utility model;
fig. 5 is a schematic installation diagram of each platform module in an overhaul platform for a vertical secondary filter screen of a power station.
In the figure: 1-a special small ladder; 2-lifting appliance; 3-a platform module a; 4-a platform module B; 5-a platform module C; 6-a platform module D; 7-a platform module E; 8-a platform module F; 9-a platform module G; 10-clamping devices; 11-a bolt; 12-hanging rings; 13-handle.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
As shown in fig. 1 to 5, the maintenance platform for a vertical secondary filter screen of a power station provided by the utility model comprises: the special small ladder 1, the lifting appliance 2, an overhaul platform main body, a clamp 10, a plug 11, a lifting ring 12 and a handle 13, wherein the overhaul platform main body comprises a middle area platform module and an edge platform module.
In this embodiment, the overhaul platform main body includes 7 platform modules, that is, a platform module A3, a platform module B4, a platform module C5, a platform module D6, a platform module E7, a platform module F8, and a platform module G9, where the 7 platform modules form a circular overhaul platform with a DN 2200. The middle area platform module comprises a platform module A3, a platform module B4 and a platform module D6, and the edge platform module comprises a platform module C5, a platform module E7, a platform module F8 and a platform module G9. Platform module A3, platform module B4 and platform module D6 are located the middle region of maintenance platform main part, and platform module C5, platform module E7, platform module F8 and platform module G9 are located the region all around of maintenance platform main part, connect through fixture 10 between the adjacent platform module.
Each platform module adopts an aluminum alloy framework, aluminum alloy plates are coated and paved on the surface of each platform module, an integral frame is formed by welding, combining and riveting, and the frame beams are used for supporting stress.
The fixture 10 is made of stainless steel, is riveted and fixed with the platform module, and has a plug-in structure and is convenient to assemble and disassemble. In this embodiment 7 platform modules are assembled by 12 clamps.
The middle area platform modules are main stress areas, lifting rings 12 are symmetrically riveted and fixed on each middle area platform module, lifting slings 2 are installed on the platform modules through the lifting rings 12, and the platform modules are connected with the I-shaped steel of the equipment body through the lifting slings 2.
In this embodiment, the middle area platform module includes three platform modules, namely, a platform module A3, a platform module B4 and a platform module D6, and a total of 8 lifting rings 12 are riveted and fixed on the three platform modules.
The lifting appliance 2 is used as a main stress part, the main body is a safety rope, and the single lifting appliance bears 800kg of weight. The upper part of the safety rope is connected with an anti-falling safety hook, and the lower part is connected with a screw rod structure with adjustable length. When the lifting device is installed for the first time, the lead screw structure with adjustable length is not connected, the length of the lifting device can be adjusted according to the field requirement, the lifting device is fixed after the adjustment is completed, and the subsequent installation is not needed to be adjusted. In the present embodiment, 8 slings 2 are provided in total corresponding to the number of slings 12.
The plastic material lag is installed to the border periphery of border platform module for prevent to overhaul the platform and collide with the equipment inner wall and cause the damage, and install the skirting board structure on the border periphery, prevent to overhaul the tool, spare part in-process and drop. In this embodiment, the plastic material protection is rubber strip, and baseboard structure height is 40mm.
The edge platform module is provided with a bolt 11 which is used for being connected with the central area platform module to prevent loose and edge tilting between the platforms after installation. In this embodiment, the edge of the platform module C5 and the platform module F8 is provided with a latch 11, and the platform module C5 and the platform module F8 are connected to the platform module A3 through the latch 11, respectively.
The two handles 13 are arranged on each platform module in the middle area platform module and the edge platform module to facilitate the installation and the transportation.
The special small ladder 1 is made of stainless steel and comprises a vertical supporting piece, an upper arc-shaped piece and a lower platform, wherein the upper arc-shaped piece and the lower platform are perpendicular to the vertical supporting piece, the upper arc-shaped piece and the lower platform are respectively located on two sides of the vertical supporting piece, the upper arc-shaped piece is connected with the vertical supporting piece through welding, and the lower platform is connected with the vertical supporting piece through hinging.
The special small ladder 1 is positioned at one side of the overhaul platform main body, an arc-shaped piece at the upper part of the special small ladder 1 is clamped with a round manhole of the secondary filter screen, and can be fixedly connected with a manhole seat flange through bolts; when the special small ladder 1 is installed, the lower platform is in a folded state, and after the special small ladder 1 stretches into the equipment through a manhole, the lower hinged lower platform can be unfolded for installing the overhaul platform. After the lower platform is unfolded, the lower platform and the vertical supporting piece are just in steel-to-steel contact and fixed, the stress is supported, the overlarge stress of the hinge is avoided, the reliability of the special small ladder 1 is improved, and the folding is convenient.
The special small ladder 1 is used as a tool for installing and overhauling the platform, and after the special small ladder 1 is installed first, personnel can stand on the platform at the lower part of the special small ladder 1 to install the platform module.
In this embodiment, the materials of the components selected for the inspection platform are shown in table 1 in combination with the stress analysis.
Table 1 materials for parts of inspection platform
| Part name | Units and quantity | |
| Platform module | ||
| 7 blocks | 6063 aluminium | |
| Lifting appliance | ||
| 8 roots of | 06Cr19Ni10+ synthetic | |
| Clamping apparatus | ||
| 12 | | |
| Bolt | ||
| 2 pieces of | 06Cr19Ni10 | |
| Special |
1 pair of | 06Cr19Ni10 |
The utility model provides a method for installing an overhaul platform for a vertical secondary filter screen of a power station, which comprises the following steps:
step 1.1, connecting 8 lifting appliances 2 with lifting rings 12 on 7 platform modules;
step 1.2, opening a manhole of a secondary filter screen, folding a lower platform of the special small ladder 1, extending into equipment, fixedly installing an upper arc-shaped part of the special small ladder 1 and a manhole seat, and naturally unfolding and paving the lower platform;
step 1.3, an installer transmits the safety belt in an external fit way, and the installer wears the safety belt to enter the equipment and stands on a lower platform of the special small ladder 1 to prepare an installation platform module;
step 1.4, when the platform module is installed, firstly installing the platform module A3, and connecting the upper parts of the four lifting appliances 2, namely completing the installation of the first platform module;
step 1.5, installing a platform module B4, a platform module D6, a platform module E7, a platform module C5, a platform module F8 and a platform module G9 in sequence, wherein the main stressed platform module A3, the platform module B4 and the platform module D6 are connected with the I-shaped steel supported by the secondary filter screen body by virtue of a lifting appliance 2, and the platform modules are fixed and stressed by virtue of a fixture 10;
and 1.6, finally, installing a bolt 11 to prevent the edge of the platform from being warped, and finishing the installation of the overhaul platform.
The utility model provides a dismantling method of an overhaul platform for a vertical secondary filter screen of a power station, which comprises the following steps:
step 2.1, pulling out the bolt 11, and then removing the platform module F8, the platform module C5, the platform module E7 and the platform module G9 in sequence;
step 2.2, according to the method of firstly pulling out the clamp 10 and then detaching the lifting appliance 2, detaching the platform module D6, the platform module B4 and the platform module A3 in sequence;
and 2.3, withdrawing the equipment by personnel, dismantling the special small ladder 1, and finishing the dismantling of the overhaul platform.
The present utility model has been described in detail with reference to the drawings and the embodiments, but the present utility model is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model. The utility model may be practiced otherwise than as specifically described.
Claims (10)
1. The overhaul platform for the vertical secondary filter screen of the power station is characterized by comprising a special small ladder (1), a lifting appliance (2), an overhaul platform main body, a clamp (10) and a lifting ring (12), wherein the overhaul platform main body comprises a middle area platform module and an edge platform module; the middle area platform module is connected with the edge platform module through a fixture (10); lifting rings (12) are symmetrically and fixedly connected to the middle area platform module, and the lifting appliance (2) is installed on the middle area platform module through the lifting rings (12); the special small ladder (1) is arranged on one side of the overhaul platform main body and is used for installing the overhaul platform.
2. An inspection platform for a vertical secondary screen for a power station according to claim 1, further comprising a pin (11), the edge platform module being connected to the central area platform module by the pin (11).
3. The overhaul platform for the vertical secondary filter screen of the power station according to claim 1, wherein the main body of the lifting appliance (2) is a safety rope, the upper part is connected with an anti-falling safety hook, and the lower part is connected with a screw rod structure with adjustable length.
4. The overhaul platform for the vertical secondary filter screen of the power station according to claim 1, wherein the special small ladder (1) comprises a vertical supporting piece, an upper arc-shaped piece and a lower platform, the upper arc-shaped piece and the lower platform are perpendicular to the vertical supporting piece, the upper arc-shaped piece and the lower platform are respectively positioned on two sides of the vertical supporting piece, the upper arc-shaped piece is connected with the vertical supporting piece, and the lower platform is connected with the vertical supporting piece.
5. The service platform for a vertical secondary screen for a power plant of claim 4, wherein the upper arcuate member is welded to the vertical support member.
6. The service platform for a vertical secondary screen for a power plant of claim 4, wherein the lower platform is connected to the vertical support by a hinge.
7. The overhauling platform for a vertical secondary filter screen of a power station as claimed in claim 1, wherein a plastic material protective sleeve is arranged on the periphery of the edge platform module.
8. The overhaul platform for a vertical secondary screen of a power station of claim 1, wherein a skirt plate structure is mounted on the periphery of the edge platform module.
9. An inspection platform for a vertical secondary screen for power stations according to claim 1, characterized in that two handles (13) are mounted on each of the middle zone platform module and the edge platform module.
10. The overhaul platform for the vertical secondary filter screen of the power station according to claim 2, wherein the middle area platform module comprises a platform module A (3), a platform module B (4) and a platform module D (6), the edge platform module comprises a platform module C (5), a platform module E (7), a platform module F (8) and a platform module G (9), the platform module A (3), the platform module B (4) and the platform module D (6) are positioned in the middle area of the overhaul platform main body, the platform module C (5), the platform module E (7), the platform module F (8) and the platform module G (9) are positioned in the peripheral area of the overhaul platform main body, the adjacent platform modules are connected through a clamp (10), and the platform module C (5) and the platform module F (8) are respectively connected with the platform module A (3) through bolts (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223269038.8U CN219351089U (en) | 2022-12-07 | 2022-12-07 | Maintenance platform for vertical secondary filter screen of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223269038.8U CN219351089U (en) | 2022-12-07 | 2022-12-07 | Maintenance platform for vertical secondary filter screen of power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219351089U true CN219351089U (en) | 2023-07-14 |
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ID=87106316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223269038.8U Active CN219351089U (en) | 2022-12-07 | 2022-12-07 | Maintenance platform for vertical secondary filter screen of power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219351089U (en) |
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2022
- 2022-12-07 CN CN202223269038.8U patent/CN219351089U/en active Active
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