Assembly tool for steam inlet valve short pipe and high-pressure cylinder

Abstract

The utility model relates to an assembly tool for a steam inlet valve short pipe and a high-pressure cylinder. The assembly tool comprises a first semicircular plate, a second semicircular plate, a first fastener and a second fastener. The first semicircular plate and the second semicircular plate are used for being arranged at a welding gap between a steam inlet valve short pipe and a steam inlet valve body in a sleeving mode, and the first semicircular plate and the second semicircular plate can be oppositely arranged and detachably connected through a first fastener. The second fastening piece is arranged on the first semicircular plate and / or the second semicircular plate and used for being tightly attached to the outer wall of the steam inlet valve short pipe and the outer wall of the steam inlet valve body. Due to the arrangement of the first semicircular plate and the second semicircular plate, stress between the steam inlet valve short pipe and the steam inlet valve body can be uniform, extrusion displacement is prevented, and a slope surface at a welding gap between the steam inlet valve short pipe and the steam inlet valve body is effectively protected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of steam turbine assembly, and in particular to an assembly tool for a steam inlet valve short pipe and a high-pressure cylinder. Background Art

[0002] In the related technology, the steam inlet valve and the high-pressure cylinder are designed to be connected by a large cover nut. There is an external threaded short-circuit on the high-pressure cylinder side. There are two U-shaped sealing rings between the steam inlet valve short pipe and the sealing surface of the external threaded short-circuit of the high-pressure cylinder to prevent steam leakage. After the steam inlet valve short pipe is fitted with the sealing surface of the threaded short-circuit on the high-pressure cylinder side, it is connected and locked by a large cover nut.

[0003] However, in actual operation, the steam inlet valve short pipe and the high-pressure cylinder side threaded short connection are in a high-temperature state for a long time, the internal and external threads are severely squeezed, and oxide scale will appear on the threads, resulting in the internal and external thread gaps being completely filled. Sometimes the threads will be bitten. During the disassembly process, the large cover nut must be destructively removed. When reinstalling, the steam inlet valve short pipe must be cut open and replaced with a new large cover nut, and the steam inlet valve short pipe must be re-welded.

[0004] Among them, when the steam intake valve is pulled toward the high-pressure cylinder side using the steam intake valve connection stretching tool to assemble the steam intake valve short tube and the cylinder sealing surface, uneven force is likely to occur at the welding gap between the steam intake valve short tube and the steam intake valve body, and the groove at the welding point cannot be effectively protected. Utility Model Content

[0005] The purpose of the present disclosure is to provide an assembly tool for a steam intake valve short pipe and a high-pressure cylinder to solve the technical problems existing in the related art.

[0006] In order to achieve the above-mentioned object, the present disclosure provides an assembly tool for a steam inlet valve short pipe and a high-pressure cylinder, the tool comprising a first semicircular ring plate, a second semicircular ring plate, a first fastener, and a second fastener;

[0007] The first semicircular ring plate and the second semicircular ring plate are used to be sleeved on the welding gap between the steam inlet valve short pipe and the steam inlet valve body, and the first semicircular ring plate and the second semicircular ring plate can be abutted against each other and detachably connected by the first fastener;

[0008] The second fastener is provided on the first semicircular ring plate and / or the second semicircular ring plate, and the second fastener is used to be closely attached to the outer wall of the steam inlet valve short tube and the outer wall of the steam inlet valve body.

[0009] Optionally, the two side surfaces of the first semicircular ring plate along the axial direction include a first side surface and a second side surface, the first side surface and the second side surface are both configured as inclined surfaces, the first side surface is configured to be fitted with the groove surface of the steam inlet valve short pipe, and the second side surface is configured to be fitted with the groove surface of the steam inlet valve body;

[0010] The two axial side surfaces of the second semicircular ring plate include a third side surface and a fourth side surface, and the third side surface and the fourth side surface are both constructed as inclined surfaces. The third side surface is used to fit together with the groove surface of the steam inlet valve short pipe, and the fourth side surface is used to fit together with the groove surface of the steam inlet valve body.

[0011] Optionally, the first side surface is inclined at 10 degrees relative to a vertical plane, the second side surface is inclined at 10 degrees relative to a vertical plane, and the planes where the first side surface and the second side surface are located can intersect;

[0012] The third side surface is inclined at 10 degrees relative to the vertical plane, the fourth side surface is inclined at 10 degrees relative to the vertical plane, and the planes where the third side surface and the fourth side surface are located can intersect.

[0013] Optionally, the first semicircular ring plate includes a first end face and a second end face, and the second semicircular ring plate includes a third end face and a fourth end face; the first end face is used to be opposite to and fit with the third end face, and the second end face is used to be opposite to and fit with the fourth end face.

[0014] Optionally, the first semicircular ring plate is formed with a first mounting hole passing through the first end surface and a second mounting hole passing through the second end surface; the second semicircular ring plate is formed with a third mounting hole passing through the third end surface and a fourth mounting hole passing through the fourth end surface;

[0015] The first fastener includes a first bolt and a second bolt. The first bolt passes through the first mounting hole and the third mounting hole and forms a threaded fit. The second bolt passes through the second mounting hole and the fourth mounting hole and forms a threaded fit.

[0016] Optionally, the second fastener is provided in at least one piece, and the second fastener comprises a threaded rod, a nut and a fitting block;

[0017] The first semicircular ring plate and / or the second semicircular ring plate are formed with fastening holes arranged in a one-to-one correspondence with the second fasteners;

[0018] The threaded rod is passed through the fastening hole, the fitting block is movably sleeved on the threaded rod and is located on the outer periphery of the first semicircular ring plate and / or the second semicircular ring plate, and the fitting block is used to be closely attached to the outer wall of the steam inlet valve short pipe and the outer wall of the steam inlet valve body;

[0019] The nut is sleeved on the threaded rod and abuts against the fitting block.

[0020] Optionally, the bonding block is constructed as an iron plate.

[0021] Optionally, the number of the second fasteners is two, and the number of the fastening holes is correspondingly two and is provided on the first semicircular ring plate;

[0022] Wherein, the axes of the two fastening holes are inclined 30 degrees relative to the vertical direction.

[0023] Optionally, the first semicircular ring plate and / or the second semicircular ring plate are constructed as an integrally formed structure.

[0024] Optionally, the first semicircular ring plate and / or the second semicircular ring plate are made of iron.

[0025] In the above technical solution, the first and second semicircular ring plates are designed in a semicircular shape, allowing them to be fitted over the weld gap between the steam inlet valve stub and the steam inlet valve body. The provision of these first and second semicircular ring plates ensures uniform force distribution between the steam inlet valve stub and the steam inlet valve body, preventing extrusion and displacement, and effectively protecting the slope of the weld gap between the steam inlet valve stub and the steam inlet valve body.

[0026] Secondly, the first fastener is used to connect the two semicircular ring plates to form a complete ring structure. This design allows for rapid assembly and disassembly of the tooling, improves work efficiency, and allows for easy removal of the tooling when inspection or maintenance of the weld gap is required.

[0027] In addition, the second fastener is designed to fit tightly against the outer wall of the steam inlet valve short tube and the outer wall of the steam inlet valve body, which means it provides additional stability and support, reduces the risk of displacement due to improper operation or external factors, and ensures the stability of the tooling during use.

[0028] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0030] Figure 1 This is a cross-sectional schematic diagram of an assembly tool for a steam intake valve short tube and a high-pressure cylinder according to an embodiment of the present invention in use, and the figure also shows a partial cross-sectional schematic diagram of the steam intake valve short tube and the steam intake valve body.

[0031] Figure 2 It is a partial structural schematic diagram of an assembly tool for a steam intake valve short pipe and a high-pressure cylinder according to an embodiment of the present invention.

[0032] Description of Reference Numerals

[0033] 1. First semicircular ring plate; 11. First side surface; 12. Second side surface; 13. First end surface; 14. Second end surface; 101. First mounting hole; 102. Second mounting hole;

[0034] 2. Second semicircular ring plate; 21. Third side surface; 22. Fourth side surface; 23. Third end surface; 24. Fourth end surface; 201. Third mounting hole; 202. Fourth mounting hole;

[0035] 3. First fastener; 31. First bolt; 32. Second bolt;

[0036] 4. Second fastener; 41. Threaded rod; 42. Nut; 43. Fitting block; 40. Fastening hole;

[0037] 10. Steam inlet valve short pipe; 20. Steam inlet valve body; 30. Welding gap. DETAILED DESCRIPTION

[0038] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0039] Reference Figures 1 to 2 As shown, the present disclosure provides an assembly tool for a steam intake valve short pipe and a high-pressure cylinder, the tool comprising a first semicircular ring plate 1, a second semicircular ring plate 2, a first fastener 3, and a second fastener 4. The first semicircular ring plate 1 and the second semicircular ring plate 2 are configured to be sleeved over a welding gap 30 between the steam intake valve short pipe 10 and the steam intake valve body 20. The first semicircular ring plate 1 and the second semicircular ring plate 2 can be aligned with each other and detachably connected via the first fastener 3. The second fastener 4 is disposed on the first semicircular ring plate 1 and / or the second semicircular ring plate 2 and is configured to be in close contact with the outer wall of the steam intake valve short pipe 10 and the outer wall of the steam intake valve body 20.

[0040] In the above technical solution, the first and second semicircular ring plates 1 and 2 are designed in a semicircular shape, allowing them to be fitted over the weld gap 30 between the steam inlet valve stub 10 and the steam inlet valve body 20. The provision of the first and second semicircular ring plates 1 and 2 ensures uniform force distribution between the steam inlet valve stub 10 and the steam inlet valve body 20, preventing extrusion and displacement, and effectively protecting the slope of the weld gap 30 between the steam inlet valve stub 10 and the steam inlet valve body 20.

[0041] Secondly, the first fastener 3 is used to connect the two semicircular ring plates to form a complete annular structure. This design allows for rapid assembly and disassembly of the tooling, improves work efficiency, and allows the tooling to be easily removed when the welding gap 30 needs to be inspected or maintained.

[0042] In addition, the second fastener 4 is designed to fit tightly against the outer wall of the steam inlet valve short pipe 10 and the outer wall of the steam inlet valve body 20, which means that it provides additional stability and support, reduces the risk of displacement due to improper operation or external factors, and ensures the stability of the tooling during use.

[0043] In one embodiment, reference Figure 1 and Figure 2 As shown, the first semicircular ring plate 1 includes a first side surface 11 and a second side surface 12 along its axial direction. Both the first side surface 11 and the second side surface 12 are configured as inclined surfaces. The first side surface 11 is configured to be aligned with the groove surface of the steam inlet valve short pipe 10, and the second side surface 12 is configured to be aligned with the groove surface of the steam inlet valve body 20. The second semicircular ring plate 2 includes a third side surface 21 and a fourth side surface 22 along its axial direction. Both the third side surface 21 and the fourth side surface 22 are configured as inclined surfaces. The third side surface 21 is configured to be aligned with the groove surface of the steam inlet valve short pipe 10, and the fourth side surface 22 is configured to be aligned with the groove surface of the steam inlet valve body 20.

[0044] That is, by setting the first side surface 11 and the second side surface 12 as inclined surfaces, and setting the third side surface 21 and the fourth side surface 22 as inclined surfaces, they can be fitted with the groove surface of the steam intake valve short pipe 10 and the groove surface of the steam intake valve body 20, thereby improving the uniformity of force.

[0045] Optionally, refer to Figure 1 As shown, the first side surface 11 is inclined 10 degrees relative to the vertical plane, and the second side surface 12 is inclined 10 degrees relative to the vertical plane. The planes of the first side surface 11 and the second side surface 12 can intersect. The third side surface 21 is inclined 10 degrees relative to the vertical plane, and the fourth side surface 22 is inclined 10 degrees relative to the vertical plane. The planes of the third side surface 21 and the fourth side surface 22 can intersect. However, this disclosure does not limit the specific inclination angles of each side surface. The specific inclination angle can be set according to the bevel surface of the steam inlet valve short pipe 10 and the bevel surface of the steam inlet valve body 20.

[0046] In another embodiment, referring to Figure 1As shown, the first semicircular ring plate 1 includes a first end face 13 and a second end face 14, and the second semicircular ring plate 2 includes a third end face 23 and a fourth end face 24; the first end face 13 is used to be opposite to and fit with the third end face 23, and the second end face 14 is used to be opposite to and fit with the fourth end face 24.

[0047] In this embodiment, the first end face 13 and the third end face 23 are opposite and fitted together. This design enables the first semicircular ring plate 1 and the second semicircular ring plate 2 to be tightly butted together when combined, thereby improving the rigidity and stability of the entire tooling.

[0048] Optionally, refer to Figure 1 and Figure 2 As shown, the first semicircular annular plate 1 is formed with a first mounting hole 101 extending through the first end surface 13 and a second mounting hole 102 extending through the second end surface 14. The second semicircular annular plate 2 is formed with a third mounting hole 201 extending through the third end surface 23 and a fourth mounting hole 202 extending through the fourth end surface 24. The first fastener 3 includes a first bolt 31 and a second bolt 32. The first bolt 31 passes through the first mounting hole 101 and the third mounting hole 201 and forms a threaded engagement therewith. The second bolt 32 passes through the second mounting hole 102 and the fourth mounting hole 202 and forms a threaded engagement therewith.

[0049] In this embodiment, bolts are used as fasteners, allowing for fine-tuning of the relative positions of the first and second semicircular annular plates 1 and 2 during assembly by adjusting the bolt positions. This helps adapt to varying working conditions and expands the applicability of the tooling. Furthermore, the threaded fastener design simplifies and expedited assembly and disassembly. Workers only need to tighten or loosen bolts to complete installation or disassembly, eliminating the need for complex tools and saving time and labor.

[0050] In other embodiments, referring to Figure 1 and Figure 2 As shown, at least one second fastener 4 is provided, and the second fastener 4 includes a threaded rod 41, a nut 42 and a fitting block 43; the first semicircular ring plate 1 and / or the second semicircular ring plate 2 are formed with fastening holes 40 arranged in a one-to-one correspondence with the second fastener 4; the threaded rod 41 is passed through the fastening hole 40, and the fitting block 43 is movably sleeved on the threaded rod 41 and is located on the outer periphery of the first semicircular ring plate 1 and / or the second semicircular ring plate 2, and the fitting block 43 is used to be tightly attached to the outer wall of the steam inlet valve short pipe 10 and the outer wall of the steam inlet valve body 20; the nut 42 is sleeved on the threaded rod 41 and abuts against the fitting block 43.

[0051] In this embodiment, the threaded rod 41 is designed to pass through the fastening hole 40, so that the second fastener 4 can be firmly fixed to the semicircular ring plate. This fixation has higher strength and can effectively prevent the tooling from sliding or loosening during use. The fitting block 43 can move on the threaded rod 41, and its position can be adjusted according to actual needs. This design enables the fitting block 43 to fit tightly on the outer wall of the steam inlet valve short pipe 10 and the steam inlet valve body 20, so as to better adapt to components of different diameters and ensure that the contact between the fitting block 43 and the components is closer. The fitting block 43 is used to fit tightly against the outer wall of the steam inlet valve short pipe 10 and the outer wall of the steam inlet valve body 20: the design of the fitting block not only improves the fit, but also enhances the stability of the tooling during use.

[0052] Optionally, the above-mentioned bonding block 43 is constructed of an iron plate. Since the iron plate has high strength and wear resistance, it can still maintain its original shape and function after multiple uses, thereby improving the reusability of the tooling. However, this disclosure does not limit the specific material of the bonding block 43.

[0053] Optionally, two second fasteners 4 are provided, and two corresponding fastening holes 40 are provided on the first semicircular ring plate 1; wherein the axes of the two fastening holes 40 are inclined 30 degrees relative to the vertical direction. However, this disclosure does not limit the number of second fasteners 4, fastening holes 40, or the inclination angle of fastening holes 40.

[0054] Optionally, the first semicircular annular plate 1 and / or the second semicircular annular plate 2 are constructed as an integrally molded structure. This integrally molded structure has the advantages of increased strength and rigidity, reduced failure points, improved precision, simplified manufacturing processes, improved surface quality, enhanced sealing performance, and reduced maintenance costs, thereby helping to improve the performance and reliability of the tooling.

[0055] Optionally, the first semicircular ring plate 1 and / or the second semicircular ring plate 2 are made of iron, but the present disclosure does not limit the specific material of the first semicircular ring plate 1 and the second semicircular ring plate 2.

[0056] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0058] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An assembly tool for a steam inlet valve short pipe and a high-pressure cylinder, characterized in that: The tooling includes a first semicircular ring plate, a second semicircular ring plate, a first fastener and a second fastener; The first semicircular ring plate and the second semicircular ring plate are used to be sleeved on the welding gap between the steam inlet valve short pipe and the steam inlet valve body, and the first semicircular ring plate and the second semicircular ring plate can be abutted against each other and detachably connected by the first fastener; The second fastener is provided on the first semicircular ring plate and / or the second semicircular ring plate, and the second fastener is used to be closely attached to the outer wall of the steam inlet valve short tube and the outer wall of the steam inlet valve body.

2. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to claim 1, characterized in that: The first semicircular ring plate has two axial side surfaces including a first side surface and a second side surface, wherein the first side surface and the second side surface are both configured as inclined surfaces, the first side surface being configured to be fitted with the groove surface of the steam inlet valve short pipe, and the second side surface being configured to be fitted with the groove surface of the steam inlet valve body; The two axial side surfaces of the second semicircular ring plate include a third side surface and a fourth side surface, and the third side surface and the fourth side surface are both constructed as inclined surfaces. The third side surface is used to fit together with the groove surface of the steam inlet valve short pipe, and the fourth side surface is used to fit together with the groove surface of the steam inlet valve body.

3. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to claim 2, characterized in that: The first side surface is inclined 10 degrees relative to the vertical plane, the second side surface is inclined 10 degrees relative to the vertical plane, and the planes where the first side surface and the second side surface are located can intersect; The third side surface is inclined at 10 degrees relative to the vertical plane, the fourth side surface is inclined at 10 degrees relative to the vertical plane, and the planes where the third side surface and the fourth side surface are located can intersect.

4. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to any one of claims 1 to 3, characterized in that: The first semicircular ring plate includes a first end face and a second end face, and the second semicircular ring plate includes a third end face and a fourth end face; the first end face is used to be opposite to and fit with the third end face, and the second end face is used to be opposite to and fit with the fourth end face.

5. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to claim 4, characterized in that: The first semicircular ring plate is formed with a first mounting hole penetrating the first end surface and a second mounting hole penetrating the second end surface; the second semicircular ring plate is formed with a third mounting hole penetrating the third end surface and a fourth mounting hole penetrating the fourth end surface; The first fastener includes a first bolt and a second bolt. The first bolt passes through the first mounting hole and the third mounting hole and forms a threaded fit. The second bolt passes through the second mounting hole and the fourth mounting hole and forms a threaded fit.

6. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to any one of claims 1 to 3, characterized in that: There is at least one second fastener, and the second fastener includes a threaded rod, a nut, and a fitting block; The first semicircular ring plate and / or the second semicircular ring plate are formed with fastening holes arranged in a one-to-one correspondence with the second fasteners; The threaded rod is passed through the fastening hole, the fitting block is movably sleeved on the threaded rod and is located on the outer periphery of the first semicircular ring plate and / or the second semicircular ring plate, and the fitting block is used to be closely attached to the outer wall of the steam inlet valve short pipe and the outer wall of the steam inlet valve body; The nut is sleeved on the threaded rod and abuts against the fitting block.

7. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to claim 6, characterized in that: The fitting block is constructed as an iron plate.

8. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to claim 6, characterized in that: There are two second fasteners, and there are two corresponding fastening holes provided on the first semicircular ring plate; Wherein, the axes of the two fastening holes are inclined 30 degrees relative to the vertical direction.

9. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to any one of claims 1 to 3, characterized in that: The first semicircular ring plate and / or the second semicircular ring plate are constructed as an integrally formed structure.

10. The assembly tool for the steam inlet valve short pipe and the high-pressure cylinder according to any one of claims 1 to 3, characterized in that: The first semicircular ring plate and / or the second semicircular ring plate are made of iron.

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