CN219293806U - Compression tool for valve seat of bypass valve of steam turbine - Google Patents
Compression tool for valve seat of bypass valve of steam turbine Download PDFInfo
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- CN219293806U CN219293806U CN202223406124.9U CN202223406124U CN219293806U CN 219293806 U CN219293806 U CN 219293806U CN 202223406124 U CN202223406124 U CN 202223406124U CN 219293806 U CN219293806 U CN 219293806U
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- valve seat
- compression
- seat compression
- turbine bypass
- bypass valve
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Abstract
The utility model relates to a compression tool for a valve seat of a bypass valve of a steam turbine. In the assembling process of the valve seat of the bypass valve of the steam turbine, the valve cavity is deeper due to limited inner space of the valve body, the common tool is inconvenient to operate, and the problem that the assembling difficulty is high and the efficiency is low due to poor fastening effect in the assembling process is likely to occur. The utility model comprises a valve seat fastening device which is arranged on the valve seat and used for fixing the valve seat, wherein a pre-pressing amount is given to the valve seat by a pre-pressing part above the valve seat fastening device, the valve seat fastening device comprises an upper rotating plate, and the rotating plate is connected with an external plate rod. The valve seat can achieve the purpose of fastening the valve, is convenient to replace and disassemble and assemble quickly, and is suitable for valve seat sizes of different specifications.
Description
Technical Field
The utility model belongs to the valve manufacturing industry, relates to an auxiliary tool in the valve seat installation process, and particularly relates to a compression tool for a bypass valve seat of a steam turbine.
Background
At present, the main stream turbine bypass valve in China is very high in pressure and temperature, a valve body and a valve cover generally adopt a self-sealing structure, a valve seat cannot be tightly pressed on the valve body through a valve cover flange, and the valve seat can only be fixed on the valve body through a valve seat pressing ring, so that the valve seat is inconvenient to assemble and disassemble.
In the assembling process of the bypass valve seat of the steam turbine, the valve cavity is deeper due to limited inner space of the valve body, the common tool is inconvenient to operate, the fastening effect is poor, the stress is uneven in the assembling process, the assembling difficulty is high, the efficiency is low, the metal winding pad is seriously possibly worn, the assembling process is complex, the existing tool is mostly of an integrated design structure, the processing difficulty is high, and the flexibility and the adaptability are poor. Therefore, a new design of a turbine bypass valve seat compression tool is needed to solve the problems in the prior art.
Disclosure of Invention
The utility model aims at the problems and provides a turbine bypass valve seat compression tool, which can achieve the purpose of valve fastening, is convenient for quick replacement and disassembly and is suitable for valve seat sizes with different specifications.
The utility model adopts the following technical scheme: the utility model provides a steam turbine bypass valve disk seat compresses tightly frock, its characterized in that includes the disk seat fastener who is used for fixed disk seat of installing on the disk seat, disk seat fastener top preset pressure part give a pre-compaction volume of disk seat, disk seat fastener include the rotor plate on upper portion, the rotor plate connect outside spanner.
Preferably, the valve seat fastening device comprises a valve seat compression rod assembly pressed on the valve seat, wherein the valve seat compression rotary sleeve is sleeved outside the valve seat compression rod assembly, and the valve seat compression rotary sleeve is abutted against the valve seat compression ring at the lower part.
Preferably, a valve seat pressing cover plate is arranged at the upper part of the pressure component.
Preferably, the valve seat pressing cover plate is connected with the valve body at two sides through fasteners.
Preferably, a positioning rotating plate is arranged at the lower part of the rotating plate, and the positioning rotating plate is sleeved on the valve seat pressing rotating sleeve.
Preferably, the spanner bar is connected with the rotating plate through the upper hole of the rotating plate, and the spanner bar drives the rotating plate to rotate.
Preferably, the rotating plate is sleeved on the valve seat pressing rotating sleeve and is connected with the valve seat pressing rotating sleeve through a round-head common flat key.
Preferably, the lower part of the valve seat pressing rotary sleeve is connected with the valve seat pressing ring through a cylindrical pin.
Preferably, the center of the valve seat pressing cover plate is connected with a lifting screw through threads.
Preferably, the pressure component is a hydraulic jack.
The utility model has the beneficial effects that:
1. the external pre-pressure on the valve seat fastening device meets the conditions of large resistance and uneven stress in the rotating process, reduces the abrasion problem in the actual assembly process, presses the valve seat in advance through the action of external force, and ensures that the valve seat fastening ring can rotate better to achieve the purpose of fastening.
2. The valve seat fastening device has the advantages that the connecting structure of each part is simple and reasonable, and meanwhile, the valve seat fastening device also has the flexibility of quick replacement and disassembly according to actual needs.
3. The assembled valve seat compression bar assembly solves the valve seat size of different conditions in the actual assembly process, and solves the problems of difficult replacement and processing, time and labor waste and material consumption of the valve seat compression bar assembly.
4. The rotor plate adopts the split connection mode of the porous external extension thickening spanner bar, and the porous difficult complex problem of rotatory in-process rotor plate and spanner bar has been solved, and the elongated structure has solved the assembly process moment little, and installation external force is big, and fastening effect is poor problem, and the thickening has solved the condition that bending fracture appears in the installation in-process of actual assembly process spanner bar intensity inadequately.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. the valve seat compression device comprises a cylindrical pin 2, a valve seat compression rod assembly 3, a valve seat compression rotary sleeve 4, a positioning rotary plate 5, a rotary plate 6, a round head common flat key 7, a spanner rod 8, a full-thread stud 9, a suspension ring screw 10, a valve seat compression cover plate 11 and a hexagonal nut.
Detailed Description
The utility model will be further illustrated with reference to specific examples.
The compression tool for the valve seat of the bypass valve of the steam turbine shown in fig. 1 comprises a valve seat fastening device which is arranged on the valve seat and used for fixing the valve seat, wherein a pre-pressing amount is given to the valve seat by a pre-pressing pressure part above the valve seat fastening device, the valve seat fastening device comprises a rotating plate 5 at the upper part, and the rotating plate is connected with an external spanner 7.
The tool in the embodiment adopts a mode that the 50T hydraulic jack (weight can be adjusted according to different valve seats) is combined with the valve seat fastening device, and realizes the pre-pressing amount of the valve seat through the external pressure, so that the problems of high resistance and low assembly efficiency in assembly work are solved, and the required external force in fastening is reduced. Meanwhile, the influence of resistance on the valve seat and the metal winding pad during installation is avoided, and larger abrasion in the assembly process is avoided.
In one embodiment, the valve seat fastening device comprises a valve seat compression rod assembly 2 pressed on the valve seat, wherein the valve seat compression rotary sleeve 3 is sleeved outside the valve seat compression rod assembly 2, and the valve seat compression rotary sleeve 3 is abutted against the valve seat compression ring at the lower part. The valve seat compression bar assembly adopts a bolt-assembled connection structure on structural connection, can cope with valve bodies of different sizes, is convenient to detach and replace, can be applied to more assembly conditions, and improves the flexibility and adaptability of the assembly tool.
In one embodiment, the upper part of the pressure member is provided with a valve seat hold-down cover plate 10. The valve seat pressing cover plate 10 is connected with the valve body through the full-thread stud 8 and the 2-type hexagonal nut. The whole stability of the valve seat fastening device is stronger, and the valve seat fastening device has a certain adjusting function.
In one embodiment, a positioning rotating plate 4 is arranged at the lower part of the rotating plate, and the positioning rotating plate 4 is sleeved on the valve seat pressing rotating sleeve 3.
In one embodiment, the wrench 7 is connected with the rotating plate 5 through the hole on the rotating plate 5, and the wrench 7 drives the rotating plate 5 to rotate. The rotor plate adopts the split connection mode of the porous external extension thickening spanner bar, and the porous cooperation that can provide rotation process spanner bar and rotor plate is better, adopts extension thickening spanner bar can provide bigger moment and intensity, and split type connection has improved the flexibility ratio when assembling.
In one embodiment, the rotating plate 5 is sleeved on the valve seat pressing rotating sleeve 3 and is connected with the valve seat pressing rotating sleeve through a round-head common flat key 6. The valve seat pressing rotary sleeve 3 is also connected with the rotary plate 5 through a base groove. The method of flat key connection and assembly is structurally adopted, so that the difficulty in installation of the whole tool is reduced. The rotating plate is connected with the valve seat compression ring through the flat key, so that the rotating plate and the valve seat compression ring are easier to connect together, the installation and the disassembly are convenient, and the assembly process is economical and efficient.
Specifically, the lower part of the valve seat pressing rotary sleeve 3 is connected with a valve seat pressing ring through a cylindrical pin 1.
Specifically, the center of the valve seat pressing cover plate 10 is connected with the suspension screw 9 through threads.
The utility model meets the conditions of large resistance and uneven stress in the rotating process under the condition of externally applied pre-pressure, reduces the abrasion problem in the actual assembly process, presses the valve seat in advance under the action of external force, and ensures that the valve seat compression ring can rotate better to achieve the purpose of fastening.
In the use process, the rotating plate is directly driven to rotate through the spanner rod, the rotating plate drives the valve seat to press the rotating sleeve to rotate, and finally the valve seat pressing ring is driven to rotate to achieve the fastening effect.
It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.
Claims (10)
1. The utility model provides a steam turbine bypass valve disk seat compresses tightly frock, its characterized in that includes the disk seat fastener who is used for fixed disk seat of installing on the disk seat, disk seat fastener top preset pressure part give a pre-compaction volume of disk seat, disk seat fastener include rotor plate (5) on upper portion, rotor plate (5) connect outside spanner (7).
2. A turbine bypass valve seat compression tooling according to claim 1, characterized in that the valve seat fastening means comprises a valve seat compression bar assembly (2) pressed on the valve seat, the valve seat compression rotation sleeve (3) is sleeved outside the valve seat compression bar assembly (2), and the valve seat compression rotation sleeve (3) is butted with the valve seat compression ring at the lower part.
3. A turbine bypass valve seat compression tooling according to claim 1 or 2, characterized in that the upper part of the pressure part is provided with a valve seat compression cover plate (10).
4. A turbine bypass valve seat compression tooling according to claim 3, wherein the valve seat compression cover plate (10) is connected to the valve body at both sides by fasteners.
5. The turbine bypass valve seat compression tool according to claim 2, wherein a positioning rotary plate (4) is arranged at the lower part of the rotary plate, and the positioning rotary plate (4) is sleeved on the valve seat compression rotary sleeve (3).
6. The turbine bypass valve seat compression tool according to claim 1, wherein the spanner rod (7) is connected with the rotating plate (5) through an upper hole of the rotating plate (5), and the spanner rod (7) drives the rotating plate (5) to rotate.
7. The turbine bypass valve seat compression tool according to claim 6, wherein the rotating plate (5) is sleeved on the valve seat compression rotating sleeve (3) and is connected with the valve seat compression rotating sleeve through a round-head common flat key (6).
8. The turbine bypass valve seat compression tool according to claim 2, wherein the lower part of the valve seat compression rotary sleeve (3) is connected with a valve seat compression ring through a cylindrical pin (1).
9. A turbine bypass valve seat compression tooling according to claim 3, characterized in that the centre of the valve seat compression cover plate (10) is connected with a lifting screw (9) by threads.
10. The turbine bypass valve seat compression tool of claim 1, wherein the pressure component is a hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223406124.9U CN219293806U (en) | 2022-12-20 | 2022-12-20 | Compression tool for valve seat of bypass valve of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223406124.9U CN219293806U (en) | 2022-12-20 | 2022-12-20 | Compression tool for valve seat of bypass valve of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219293806U true CN219293806U (en) | 2023-07-04 |
Family
ID=86954573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223406124.9U Active CN219293806U (en) | 2022-12-20 | 2022-12-20 | Compression tool for valve seat of bypass valve of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219293806U (en) |
-
2022
- 2022-12-20 CN CN202223406124.9U patent/CN219293806U/en active Active
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