A method for assembling a threaded ring

Abstract

The application discloses a kind of assembly methods of thread ring, based on the dismounting tool of thread ring, dismounting tool includes connecting disc, movable block and connecting rod;Connecting disc includes oppositely arranged first surface and second surface;First surface of connecting disc is provided with several sliding grooves, and sliding groove extends along the radial direction of connecting disc;Second surface of connecting disc is coaxially provided with connecting portion, and connecting portion is suitable for interfacing with torque tool, and torque tool can drive connecting disc to rotate by connecting portion;Movable block is slidably arranged in corresponding sliding groove, and movable block is positioned by abutting with connecting disc by bolt;Movable block is provided with clamping block matched with the clamping groove of thread ring;Connecting rod is arranged along the radial direction of connecting disc, and its end is screw-connected with connecting portion.The application cooperates connecting disc, movable block and connecting rod to effectively tighten thread ring on high-pressure inner cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of assembly, in particular to a threaded ring assembly method. BACKGROUND

[0002] The steam turbine is a rotary external combustion engine that converts the heat energy of steam into mechanical work. The steam from the boiler enters the steam turbine and passes through a series of annularly arranged nozzles and moving blades, converting the heat energy of the steam into mechanical energy for the rotation of the steam turbine rotor. The steam turbine usually operates under high temperature, high pressure and high speed conditions, and is a relatively precise heavy machinery.

[0003] As shown in Figures 1-2 The high-pressure inner cylinder 6 of the steam turbine is a hollow structure. A plurality of installation holes are formed in the side wall of the high-pressure inner cylinder 6, and the installation holes are in communication with the inner cavity of the high-pressure inner cylinder 6. The installation holes are used to install the threaded ring 5. In the prior art, the inner ring of the threaded ring is smooth, and there is no structure on the inner ring of the threaded ring suitable for docking with a wrench, i.e. there is no suitable tool to assist the worker to install the threaded ring on the side wall of the high-pressure inner cylinder. It is difficult to install the threaded ring on the side wall of the high-pressure inner cylinder. SUMMARY

[0004] The technical problem to be solved by the present application is that there is no suitable tool to install the threaded ring on the high-pressure inner cylinder.

[0005] The present application discloses a threaded ring assembly method based on a threaded ring dismounting tool, which is used to install the threaded ring on the high-pressure inner cylinder.

[0006] A plurality of clamping grooves are formed on the side of the threaded ring away from the inner cavity of the high-pressure inner cylinder, and the clamping grooves are located at the edge of the inner ring of the threaded ring. The clamping groove includes a bottom wall and side walls arranged on both sides of the bottom wall, and the included angle between the bottom wall and the end face of the threaded ring is 120°-150°.

[0007] The dismounting tool includes a connecting disc, a movable block and a connecting rod.

[0008] The connecting disc includes a first face and a second face arranged opposite to each other. A plurality of sliding grooves are formed in the first face of the connecting disc, and the sliding grooves extend along the radial direction of the connecting disc. The second face of the connecting disc is coaxially provided with a connecting portion, and the connecting portion is suitable for docking with a torque tool. The torque tool can drive the connecting disc to rotate through the connecting portion. A first threaded hole is formed in the center of the connecting disc, and the first threaded hole is arranged along the axial direction of the connecting disc and extends to the outside of the connecting portion. The first threaded hole is suitable for hoisting and weight reduction.

[0009] The movable block is slidably disposed in the corresponding groove, and the movable block is positioned by abutting against the connecting plate by bolts; the movable block is provided with a locking block that matches the locking groove of the threaded ring; the movable block includes a locking block and a slider body;

[0010] The slider body extends radially along the connecting plate and is slidably connected to the groove; the threaded end of the bolt is threadedly connected to the slider body and abuts against the connecting plate.

[0011] The card block is located at one end of the slider body away from the center of the connecting plate;

[0012] The slider body is adapted to abut against the inner ring of the threaded ring when the card block is engaged with the card slot;

[0013] The connecting rod is arranged radially along the connecting disc, and its end is threadedly connected to the connecting part;

[0014] The assembly method specifically includes the following steps:

[0015] S1. Place the movable block of the disassembly and assembly tool on the inner ring of the threaded ring, and adjust the relative position of the movable block and the slide groove so that the locking block engages with the corresponding locking groove;

[0016] S2. Place the threaded ring in the mounting hole of the high-pressure inner cylinder, and rotate the disassembly and assembly tool through the connecting rod to pre-tighten the threaded ring;

[0017] S3. Connect the torque tool to the connecting part and tighten the threaded ring into the mounting hole of the high-pressure inner cylinder using the torque tool. The threaded ring is effectively tightened onto the high-pressure inner cylinder through the cooperation of the connecting plate, the movable block, and the connecting rod.

[0018] Optionally, the end face of the slider body away from the center of the connecting plate is an arc surface, and the arc surface is made of copper. This design effectively protects the inner ring of the threaded ring.

[0019] Optionally, the cross-section of the locking block is triangular. This design allows the locking block to effectively drive the threaded ring to rotate.

[0020] Optionally, there are at least two slides, and the slides are distributed along the circumference of the connecting disc;

[0021] There are at least two movable blocks, and multiple movable blocks are distributed circumferentially along the connecting disc. This design ensures that the locking blocks effectively drive the threaded ring to rotate smoothly.

[0022] Optionally, the cross-section of the slide is T-shaped. This design prevents the movable block from accidentally separating from the slide.

[0023] Optionally, the outer diameter of the connecting disc is smaller than the inner diameter of the threaded ring;

[0024] The card block is positioned outside the connecting plate. This design prevents the connecting plate from interfering with the connection between the card block and the card slot.

[0025] Optionally, the connecting part is an internal hexagonal structure or an external hexagonal structure. This design allows for docking with a torque tool.

[0026] By adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0027] The threaded ring is effectively tightened onto the high-pressure inner cylinder through the cooperation of the connecting plate, the movable block, and the connecting rod.

[0028] By adjusting the relative position of the slide and the movable block, it can be matched with threaded rings of different specifications, and can also be adapted to threaded rings with irregular inner rings, effectively improving the compatibility.

[0029] The fit between the locking block and the slot, and the contact between the curved surface and the threaded ring, ensure that the disassembly tool will not accidentally fall off the threaded ring during the assembly process, thus improving safety.

[0030] The above description of the disclosure and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. Attached Figure Description

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Figure 1 A schematic diagram showing a threaded ring installed on a high-pressure inner cylinder;

[0033] Figure 2 This is a schematic diagram of a threaded ring;

[0034] Figure 3 A schematic diagram for disassembling the tooling (I);

[0035] Figure 4 Schematic diagram for disassembling the tooling (II);

[0036] Figure 5 This is a schematic diagram of the connecting plate and the connecting part;

[0037] Figure 6 This is a schematic diagram of the active block;

[0038] Figure 7 Schematic diagram for disassembling the tooling (III);

[0039] Figure 8 This is a schematic diagram of the threaded ring and disassembly tooling.

[0040] Explanation of icon numbers:

[0041] 1. Connecting plate; 11. Slide groove; 12. Weight reduction hole; 13. First threaded hole; 14. Second threaded hole; 2. Movable block; 21. Locking block; 22. Slider body; 221. Arc surface; 3. Connecting rod; 4. Connecting part; 5. Threaded ring; 51. Locking groove; 511. Bottom wall; 512. Side wall; 6. High-pressure inner cylinder. Detailed Implementation

[0042] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0043] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0044] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0045] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0046] This application discloses a method for assembling a threaded ring, based on a tooling for disassembling and assembling the threaded ring. The tooling is used to install the threaded ring 5 onto a high-pressure inner cylinder 6.

[0047] In this embodiment, please refer to Figure 1 and Figure 2 As shown, a plurality of slots 51 are provided on the side of the threaded ring 5 away from the inner cavity of the high-pressure inner cylinder 6. These slots 51 are located on the inner edge of the threaded ring 5. There are at least two slots 51. In this embodiment, there are four slots 51, evenly spaced along the circumference of the threaded ring 5.

[0048] Please see Figure 3 , Figure 4 and Figure 8 As shown, the assembly / disassembly fixture includes a connecting plate 1, a movable block 2, and a connecting rod 3. The connecting plate 1 has a disc-shaped structure. The connecting plate 1 includes a first surface and a second surface arranged opposite to each other. The first surface of the connecting plate 1 has several sliding grooves 11. The sliding grooves 11 extend radially along the connecting plate 1. The second surface of the connecting plate 1 has a connecting part 4 coaxially arranged. The connecting part 4 is suitable for docking with a torque tool. The torque tool can drive the connecting plate 1 to rotate through the connecting part 4. The movable block 2 is slidably disposed in the corresponding sliding groove 11. The movable block 2 is abutted and positioned against the connecting plate 1 by bolts. The movable block 2 is provided with a locking block 21 that matches the locking groove 51. The connecting rod 3 is arranged radially along the connecting plate 1. The end of the connecting rod 3 is threadedly connected to the connecting part 4.

[0049] The number of connecting rods 3 is several. In this embodiment, there are six connecting rods 3. The end of the connecting rod 3 away from the connecting part 4 is provided with an anti-slip protrusion for the operator to grip.

[0050] In this embodiment, torque tools include, but are not limited to, wrenches, torque wrenches, etc.

[0051] In some embodiments, both the connecting disc 1 and the connecting rod 3 are made of aluminum alloy.

[0052] In this embodiment, please refer to Figure 2 As shown, the slot 51 includes a bottom wall 511 and side walls 512 disposed on both sides of the bottom wall 511. The included angle between the bottom wall 511 and the end face of the threaded ring 5 is 120° to 150°. The cross-section of the locking block 21 is triangular.

[0053] Preferably, the included angle between the bottom wall 511 and the end face of the threaded ring 5 is 135°. The cross-section of the locking block 21 is an isosceles right triangle with a right-angled side length of 20mm. The side wall 512 of the slot 51 is an isosceles right triangle with a right-angled side length of 20mm.

[0054] Furthermore, there are at least two slide grooves 11, and multiple slide grooves 11 are distributed along the circumferential direction of the connecting disk 1. There are at least two locking blocks 21, and multiple locking blocks 21 are distributed along the circumferential direction of the connecting disk 1. There are at least two movable blocks 2, and multiple movable blocks 2 are distributed along the circumferential direction of the connecting disk 1.

[0055] In this embodiment, there are four slide grooves 11 and four movable blocks 2, which correspond one-to-one. The four slide grooves 11 are distributed at equal angular intervals along the circumference of the connecting disk 1.

[0056] In this embodiment, please refer to Figure 5 As shown, the cross-section of the slide 11 is T-shaped to prevent the movable block 2 from accidentally separating from the slide 11.

[0057] Please see Figure 6 As shown, the movable block 2 includes a locking block 21 and a slider body 22. Specifically, the slider body 22 extends radially along the connecting plate 1 and is slidably connected to the slide groove 11. The threaded end of the bolt is threadedly connected to the slider body 22 and abuts against the connecting plate 1 to position the slider body 22. The locking block 21 is located at the end of the slider body 22 away from the center of the connecting plate 1. When the locking block 21 is engaged with the slot 51, the slider body 22 is adapted to abut against the inner ring of the threaded ring 5.

[0058] Furthermore, in order to effectively protect the inner ring of the threaded ring 5, the end face of the slider body 22 away from the center of the connecting plate 1 is an arc surface 221, that is, the slider body 22 abuts against the inner ring of the threaded ring 5 through the arc surface 221.

[0059] Furthermore, the curved surface 221 is made of copper, which effectively prevents the slider body 22 from scratching the inner ring of the threaded ring 5.

[0060] In this embodiment, the outer diameter of the connecting disc 1 is smaller than the inner diameter of the threaded ring 5 so that it can be placed inside the threaded ring 5. The locking block 21 is placed outside the connecting disc 1 to prevent the connecting disc 1 from interfering with the connection between the locking block 21 and the locking groove 51.

[0061] Furthermore, the connecting part 4 is an internal hexagonal structure or an external hexagonal structure to facilitate docking with a torque tool. In this embodiment, the connecting part 4 is an external hexagonal sleeve. The inner hole of the connecting part 4 is an internal hexagonal hole.

[0062] In this embodiment, the connecting disk 1 and the connecting part 4 are integrally formed.

[0063] For further details, please refer to Figure 3 As shown, a first threaded hole 13 is provided at the center of the connecting plate 1. The first threaded hole 13 is suitable for lifting and weight reduction, that is, the first threaded hole 13 is a lifting hole. The first threaded hole 13 is arranged along the axial direction of the connecting plate 1 and extends to the outside of the connecting part 4. In this embodiment, the first threaded hole 13 is connected to the inner hole of the connecting part 4.

[0064] When the outer diameter of connecting disc 1 is large, please refer to Figure 3 As shown, the connecting plate 1 has a weight reduction hole 12 to reduce the weight of the connecting plate 1.

[0065] When the outer diameter of connecting disc 1 is small, please refer to Figure 7 As shown, the connecting plate 1 does not have a weight reduction hole 12.

[0066] For further details, please refer to Figure 3 As shown, the connecting plate 1 also has a second threaded hole 14, which is a lifting hole. The second threaded holes 14 are distributed near the outer edge of the connecting plate 1. In this embodiment, there are four second threaded holes 14, which are distributed at equal angular intervals along the circumference of the connecting plate 1.

[0067] This application discloses a method for assembling a threaded ring, specifically including the following steps:

[0068] S1. Place the movable block 2 of the disassembly and assembly fixture on the inner ring of the threaded ring 5, adjust the relative position of the movable block 2 and the slide groove 11, and use bolts to position the movable block 2 so that the locking block 21 engages with the corresponding locking groove 51; at this time, the disassembly and assembly fixture and the threaded ring are connected as one unit (e.g., Figure 8 (as shown)

[0069] S2. Place the threaded ring 5 into the mounting hole of the high-pressure inner cylinder 6. Rotate the disassembly and assembly tool by rotating the connecting rod 3, so that the connecting plate 1 drives the threaded ring 5 to rotate through the clamping block 21, thereby pre-tightening the threaded ring 5. When the connecting part 4 is relatively long and the connecting rod 3 is located at the end of the connecting part 4 closest to the connecting plate 1, after step S2, it is not necessary to remove the connecting rod 3 from the connecting part 4; proceed directly to step S3. When the connecting part 4 is relatively short, after step S2, the connecting rod 3 must be removed from the connecting part 4 before proceeding to step S3.

[0070] S3. Connect the torque tool to the connecting part 4, and tighten the threaded ring 5 into the mounting hole of the high-pressure inner cylinder 6 using the torque tool.

[0071] In summary, this application utilizes the cooperation of the connecting disc, movable block, and connecting rod to effectively tighten the threaded ring onto the high-pressure inner cylinder; by adjusting the relative position of the sliding groove and the movable block, it can match threaded rings of different specifications, and can also adapt to threaded rings with irregular inner rings, effectively improving compatibility; through the cooperation between the locking block and the locking groove, and the abutment between the arc surface and the threaded ring, the disassembly tooling will not accidentally fall off the threaded ring during the assembly process, improving safety performance and preventing the tooling from injuring workers.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method of assembling a threaded ring, based on a dismounting tool for a threaded ring (5) for mounting the threaded ring (5) on a high-pressure inner cylinder (6), characterized in that, The threaded ring (5) is provided with a plurality of clamping grooves (51) on the side away from the inner cavity of the high-pressure inner cylinder (6), and the clamping grooves (51) are located on the inner edge of the threaded ring (5); the clamping groove (51) comprises a bottom wall (511) and a side wall (512) arranged on both sides of the bottom wall (511), and the included angle between the bottom wall (511) and the end face of the threaded ring (5) is 120°-150°; The dismounting tool comprises a connecting disc (1), a movable block (2) and a connecting rod (3); The connecting disc (1) comprises a first face and a second face arranged oppositely; the first face of the connecting disc (1) is provided with a plurality of sliding grooves (11), and the sliding grooves (11) extend along the radial direction of the connecting disc (1); the second face of the connecting disc (1) is coaxially provided with a connecting part (4), the connecting part (4) is suitable for being connected with a torque tool, and the torque tool can drive the connecting disc (1) to rotate through the connecting part (4); the center of the connecting disc (1) is provided with a first threaded hole (13), the first threaded hole (13) is arranged along the axial direction of the connecting disc (1) and extends to the outside of the connecting part (4); and the first threaded hole (13) is suitable for hoisting and weight reduction; The movable block (2) is slidingly arranged in the corresponding sliding groove (11), and the movable block (2) is positioned by abutting against the connecting disc (1) through a bolt; the movable block (2) is provided with a clamping block (21) matched with the clamping groove (51) of the threaded ring (5); the movable block (2) comprises the clamping block (21) and a sliding block body (22); The sliding block body (22) extends along the radial direction of the connecting disc (1) and is slidingly connected with the sliding groove (11); the threaded end of the bolt is threadedly connected with the sliding block body (22) and abuts against the connecting disc (1); The clamping block (21) is located at one end of the sliding block body (22) away from the center of the connecting disc (1); The sliding block body (22) is suitable for abutting against the inner ring of the threaded ring (5) when the clamping block (21) and the clamping groove (51) are clamped together; The connecting rod (3) is arranged along the radial direction of the connecting disc (1), and the end portion of the connecting rod (3) is threadedly connected with the connecting part (4); The assembly method specifically comprises the following steps: S1, the movable block (2) of the dismounting tool is placed in the inner ring of the threaded ring (5), and the relative position of the movable block (2) and the sliding groove (11) is adjusted so that the clamping block (21) and the corresponding clamping groove (51) are clamped together; S2, the threaded ring (5) is placed in the mounting hole of the high-pressure inner cylinder (6), and the threaded ring (5) is pre-tightened by rotating the dismounting tool through the connecting rod (3); S3, the torque tool is connected with the connecting part (4), and the threaded ring (5) is tightened in the mounting hole of the high-pressure inner cylinder (6) through the torque tool.

2. The method of assembling according to claim 1, wherein, The end face of one end of the sliding block body (22) away from the center of the connecting disc (1) is an arc face (221), and the arc face (221) is made of copper.

3. The method of assembling according to claim 1, wherein, The section of the clamping block (21) is triangular.

4. The method of assembling according to claim 1, wherein, The chute (11) is at least two, and multiple chutes (11) are distributed along the circumference of the connecting disc (1). The movable block (2) is at least two, and multiple movable blocks (2) are distributed along the circumference of the connecting disc (1).

5. The method of assembling according to claim 1, wherein, The section of the chute (11) is T-shaped.

6. The method of assembling according to claim 1, wherein, The outer diameter of the connecting disc (1) is smaller than the inner diameter of the threaded ring (5). The clamping block (21) is placed outside the connecting disc (1).

7. The method of assembling according to claim 1, wherein, The connecting part (4) is an inner hexagonal structure or an outer hexagonal structure.

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