Axial-flow propeller blade pivot sealing ring bonding tool

Abstract

The utility model provides an axial-flow propeller blade pivot sealing ring bonding tool. The axial-flow propeller blade pivot sealing ring bonding tool is characterized in that a lower convex structure A (102) at the bottom of an upper die A (1) is matched with a cavity structure A (202) at the top of a lower die A (2); one end of the upper die A (1) is provided with an oblique angle A (105); a wedge-shaped structure A (201) is arranged at the same end of the lower die A (2); a lower convex structure B (502) at the bottom of the upper die B (5) is matched with a cavity structure B (602) at the top of the lower die B (6); one end of the upper die B (5) is provided with an oblique angle B (505); a wedge-shaped structure B (601) is arranged at the same end of the lower die B (6); the mold A and the mold B are connected through a positioning pin (11) and can move along the pin shaft; when the wedge-shaped structure A (201) and the wedge-shaped structure B (601) are attached to each other, the bevel angle A (105) and the bevel angle B (505) can be tightly attached to each other in a face-to-face mode. Bonding reliability of the sealing ring can be improved, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of axial-flow impeller blades, in particular to a bonding tool for an axial-flow impeller blade pivot seal ring. Background Art

[0002] The axial-flow impeller blade pivot seal ring is made of rubber and is generally designed as a multi-channel, multi-layer V-shaped seal structure. It is installed between the axial-flow impeller turbine blade pivot and the runner body to act as a seal, preventing the hydraulic oil in the runner body from flowing out from between the runner body and the pivot during rotation and stationary periods of the pivot, and at the same time preventing the hydraulic water outside the runner body from flowing in from between the runner body and the pivot. During long-term operation, the pivot and the sealing ring interact and wear, and the sealing ring ages, causing the sealing ring to break and fail, resulting in hydraulic oil from the runner body flowing into the river channel or pressurized water in the river channel flowing into the runner body. The A-level maintenance cycle of the unit is 8-10 years. If the sealing ring fails during non-A-level maintenance, the sealing ring needs to be replaced without removing the pivot. During the replacement process, the sealing ring needs to be broken and bonded before installation and use.

[0003] The sealing ring acts as a seal between the pivot and the impeller body, and needs to have a certain degree of integrity and structural shape stability. Therefore, the sealing ring has high process requirements during the bonding process to ensure the integrity and structural shape of the sealing ring after bonding. The conventional method is to use a marker to mark the sealing ring and then use a material knife to cut along the line. After cutting, the bonding surface is trimmed with an angle grinder. After trimming, the bonding surface is coated with sealant and then manually extruded and docked. In the conventional method, it is difficult to manually mark the sealing ring, and it is difficult to ensure that the marked line is symmetrical and flush. It is also difficult to ensure that the cut surface is flat during cutting and grinding, resulting in the sealing ring joint surface not fitting perfectly after cutting, and the sealing ring deforms and debonds after bonding. In addition, during the extrusion and docking process, the bonding effect is often poor due to uneven manual force. Bonding deformation occurs in some locations with greater extrusion pressure, and weak bonding occurs in locations with less extrusion pressure. The whole body is misaligned or deformed. In summary, conventional methods for bonding sealing rings struggle to meet the requirements of the sealing ring bonding process, resulting in poor bonding results, structural deformation of the sealing ring after bonding, or insufficient integrity due to debonding. Ultimately, this leads to poor sealing performance after installation, resulting in water and oil leakage. Based on this, the present application proposes a sealing ring bonding tool with a simple structure that ensures the bonding process, sealing integrity, and sealing effect without causing deformation of the sealing ring. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a sealing ring bonding tool with a simple structure that can ensure the bonding process, sealing integrity, and sealing effect without causing deformation of the sealing ring. This is achieved specifically through the following technical solutions:

[0005] A tool for bonding an axial-flow impeller blade pivot seal ring, comprising a mold A, a mold B, and a positioning pin, wherein:

[0006] The mold A comprises an upper mold A and a lower mold A; the upper mold A is arranged on the top of the lower mold A; a lower convex structure A is provided at the bottom of the upper mold A; a cavity structure A is provided on the top of the lower mold A to match the lower convex structure A; an angle A is provided at one end of the upper mold A; and a wedge-shaped structure A is provided at the same end of the lower mold A.

[0007] The mold B includes an upper mold B and a lower mold B; the upper mold B is arranged on the top of the lower mold B; the bottom of the upper mold B is provided with a lower convex structure B; the top of the lower mold B is provided with a cavity structure B that matches the lower convex structure B; one end of the upper mold B is provided with an angled corner B; the same end of the lower mold B is provided with a wedge-shaped structure B;

[0008] The mold A and the mold B are connected by a positioning pin; the mold A and the mold B can move closer to or farther away from each other along the pin axis of the positioning pin;

[0009] The angle of the wedge-shaped structure A and the angle of the wedge-shaped structure B are complementary; when the mold A and the mold B are close to each other, the wedge-shaped structure A and the wedge-shaped structure B can be closely fitted together; the bevel A and the bevel B can be closely fitted together.

[0010] Optionally or preferably, it also includes a spring and a tightening nut; the spring and the tightening nut are both mounted on the positioning pin; the tightening nut presses the spring onto the outside of mold A or mold B; when the tightening nut is turned, the compression amount of the spring can be adjusted, thereby adjusting the clamping force between mold A and mold B.

[0011] Optionally or preferably, the upper mold A includes a flat plate structure A and a lower convex structure A; positioning screw holes A are provided at both ends of the flat plate structure A for fixing the upper mold A to the lower mold A via positioning bolts A; the lower convex structure A is provided at the bottom of the flat plate structure A, and the lower convex structure A is fastened and accommodated in the cavity structure A of the lower mold A;

[0012] The upper mold B includes a flat plate structure B and a lower convex structure B; positioning screw holes B are provided at both ends of the flat plate structure B for the upper mold B to be fixed to the lower mold B through positioning bolts B; the lower convex structure B is arranged at the bottom of the flat plate structure B, and the lower convex structure B is fastened and accommodated in the cavity structure B of the lower mold B.

[0013] Optionally or preferably, a lifting lug screw hole A is further provided in the middle of the flat plate structure A; and a lifting lug screw hole B is further provided in the middle of the flat plate structure B.

[0014] Optionally or preferably, the oblique angles of the wedge-shaped structure A and the wedge-shaped structure B are both 45°.

[0015] Optionally or preferably, the downward convex structure A and the downward convex structure B have the same structural shape, both being V-shaped bosses.

[0016] Based on the above technical solution, the following technical effects can be produced:

[0017] The utility model provides a tool for bonding a sealing ring of an axial-flow impeller blade pivot, which can ensure the bonding quality of the sealing ring and avoid water leakage, oil leakage and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 is a top view of mold A;

[0020] Figure 2 It is the main view of mold A;

[0021] Figure 3 AA sectional view of mold A;

[0022] Figure 4 is a top view of mold B;

[0023] Figure 5 This is the main view of mold B;

[0024] Figure 6 BB is the cross-sectional view of mold B;

[0025] Figure 7 A top view of the new invention;

[0026] Figure 8 This is the new main view for this utility;

[0027] Description of the accompanying drawings:

[0028] 1-upper die A, 2-lower die A, 3-positioning bolt A, 4-pin A, 5-upper die B, 6-lower die B, 7-positioning bolt B, 9-spring, 10-tightening nut, 11-positioning pin,

[0029] 101- flat plate structure A, 102- convex structure A, 103- positioning screw hole A, 104- ear screw hole A, 105- bevel A,

[0030] 201-wedge structure A, 202-cavity structure A,

[0031] 501-flat structure B, 502-convex structure B, 503-positioning screw hole B, 504-eye screw hole B, 505-bevel B,

[0032] 601-wedge-shaped structure B, 602-cavity structure B. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0034] In a preferred embodiment:

[0035] like Figure 1-Figure 3 As shown:

[0036] This embodiment provides an axial-flow impeller blade pivot seal ring bonding tool, comprising a mold A, a mold B, and a positioning pin 11, wherein:

[0037] The mold A includes an upper mold A1 and a lower mold A2; the upper mold A1 is arranged on top of the lower mold A2; a lower convex structure A102 is provided at the bottom of the upper mold A1; a cavity structure A202 is provided on the top of the lower mold A2 to cooperate with the lower convex structure A102; an oblique angle A105 is provided at one end of the upper mold A1; and a wedge-shaped structure A201 is provided at the same end of the lower mold A2;

[0038] The mold B includes an upper mold B5 and a lower mold B6; the upper mold B5 is arranged on top of the lower mold B6; the bottom of the upper mold B5 is provided with a downward convex structure B502; the top of the lower mold B6 is provided with a cavity structure B602 that cooperates with the downward convex structure B502; one end of the upper mold B5 is provided with an oblique angle B505; the same end of the lower mold B6 is provided with a wedge-shaped structure B601;

[0039] The mold A and the mold B are connected by a positioning pin 11; the mold A and the mold B can move closer to or farther away from each other along the pin axis of the positioning pin 11;

[0040] The angle of the wedge structure A201 and the angle of the wedge structure B601 are complementary; when the mold A and the mold B are close to each other, the wedge structure A201 and the wedge structure B601 can be closely fitted together, and the bevel A105 and the bevel B505 can be closely fitted together to serve as a sealing ring combination surface.

[0041] Furthermore, in this embodiment, a spring 9 and a tightening nut 10 are also included; the spring 9 and the tightening nut 10 are both mounted on the positioning pin 11; the tightening nut 10 presses the spring 9 onto the outside of the mold A or the mold B; when the tightening nut 10 is turned, the compression amount of the spring 9 can be adjusted, thereby adjusting the clamping force between the mold A and the mold B.

[0042] Furthermore, in this embodiment, the upper mold A1 includes a flat plate structure A101 and a lower convex structure A102; positioning screw holes A103 are provided at both ends of the flat plate structure A101 for fixing the upper mold A1 to the lower mold A2 via positioning bolts A3; the lower convex structure A102 is provided at the bottom of the flat plate structure A101, and the lower convex structure A102 is fastened and accommodated in the cavity structure A202 of the lower mold A2;

[0043] The upper mold B5 includes a flat plate structure B501 and a lower convex structure B502; positioning screw holes B503 are provided at both ends of the flat plate structure B501 for fixing the upper mold B5 on the lower mold B6 through positioning bolts B7; the lower convex structure B502 is arranged at the bottom of the flat plate structure B501, and the lower convex structure B502 is fastened and accommodated in the cavity structure B602 of the lower mold B6.

[0044] Furthermore, in this embodiment, a lifting lug screw hole A104 is further provided in the middle of the flat plate structure A101; and a lifting lug screw hole B504 is further provided in the middle of the flat plate structure B501.

[0045] Furthermore, in this embodiment, the bevel angles of the wedge-shaped structure A201 and the wedge-shaped structure B601 are both 45°.

[0046] Furthermore, in this embodiment, the downward convex structure A102 and the downward convex structure B502 have the same structural shape, both being V-shaped bosses.

[0047] The axial-flow impeller blade pivot seal ring bonding tool provided in this embodiment has the following advantages:

[0048] (1) Simple structure and low manufacturing cost;

[0049] (2) The bonding steps are simple and the effect is reliable;

[0050] (3) It can avoid structural deformation and debonding after bonding;

[0051] (4) Effectively ensure the bonding quality of the sealing ring and the integrity of the seal.

[0052] The working principle of this embodiment is as follows:

[0053] 1. When cutting the sealing ring: first place the lower die A2 and the lower die B6 horizontally, then place the sealing ring to be bonded with the V-shaped mouth facing upward into the lower die A2 and the lower die B6, then align the upper die A1 with the lower die A2 and place it on the upper end of the lower die A2, align the upper die B5 with the lower die B6 and place it on the upper end of the lower die B6, adjust the die A and the die B back and forth along the sealing ring, and pass the positioning pin 11 through the die A and the die B; then adjust the lower die A2 and the lower die B6 so that the clearance between the combined surfaces of the wedge structure A201 and the wedge structure B601 is about 1 mm, then install and fix the upper die A1 and the lower die A2 with the positioning bolts A3, and install and fix the upper die B5 and the lower die B6 with the positioning bolts B7; finally, use a material knife to cut the sealing ring along the clearance between the combined surfaces of the wedge structure A201 and the wedge structure B601.

[0054] 2. Sealing ring bonding: After cutting the sealing ring, separate the two cut sealing rings and grind the sealing rings along the 45° combined bevel of the wedge structure A201 and the wedge structure B601 respectively; then loosen the tightening nut 10, move the polished sealing ring combination surface 1mm away from the combined surface of the wedge structure A201 and the wedge structure B601, and then re-clamp the sealing ring; then put the spring 9 in the thread direction of the positioning pin 11, and screw in the tightening nut 10 to form an appropriate extrusion pressure on the combined surface of the wedge structure A201 and the wedge structure B601; hold the two ends of the mold A and the mold B, stretch the extrusion spring 9, and separate the sealing ring combined surfaces by about 10mm; Apply adhesive evenly to the combined surface of the sealing ring, slowly loosen mold A and mold B, so that the combined surface of the sealing ring contacts, and under the action of spring 9, the combined surface of the sealing ring always has a constant extrusion pressure until the sealing ring is completely and firmly bonded; after bonding, remove the tightening nut 10, remove the spring force of spring 9, take out the spring 9 and the positioning pin 11, and then remove the positioning bolt A3 and the positioning bolt B7, and install the ear screw in the ear screw hole A104, remove the upper mold A1, and install the ear screw in the ear screw hole B03, and remove the upper mold B5; take out the bonded sealing ring, remove the excess adhesive and rubber around the combined surface of the sealing ring, and the sealing ring bonding work is completed.

[0055] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A bonding tool for an axial flow impeller blade pivot seal ring, characterized in that: include: Mold A, mold B, positioning pin (11), wherein: The mold A comprises an upper mold A (1) and a lower mold A (2); the upper mold A (1) is arranged on the top of the lower mold A (2); a lower convex structure A (102) is provided at the bottom of the upper mold A (1); a cavity structure A (202) is provided on the top of the lower mold A (2) to match the lower convex structure A (102); an oblique angle A (105) is provided at one end of the upper mold A (1); and a wedge-shaped structure A (201) is provided at the same end of the lower mold A (2); The mold B comprises an upper mold B (5) and a lower mold B (6); the upper mold B (5) is arranged on the top of the lower mold B (6); the bottom of the upper mold B (5) is provided with a lower convex structure B (502); the top of the lower mold B (6) is provided with a cavity structure B (602) that matches the lower convex structure B (502); one end of the upper mold B (5) is provided with an oblique angle B (505); the same end of the lower mold B (6) is provided with a wedge-shaped structure B (601); The mold A and the mold B are connected via a positioning pin (11); the mold A and the mold B can move closer to or farther away from each other along the pin axis of the positioning pin (11); The angle of the wedge-shaped structure A (201) and the angle of the wedge-shaped structure B (601) are complementary; when the mold A and the mold B are close to each other, the wedge-shaped structure A (201) and the wedge-shaped structure B (601) can be closely fitted together; the bevel angle A (105) and the bevel angle B (505) can be closely fitted together.

2. The axial flow impeller blade pivot seal ring bonding tool according to claim 1, characterized in that: The invention also includes a spring (9) and a tightening nut (10); the spring (9) and the tightening nut (10) are both sleeved on the positioning pin (11); the tightening nut (10) presses the spring (9) onto the outside of the mold A or the mold B; when the tightening nut (10) is turned, the compression amount of the spring (9) can be adjusted, thereby adjusting the pressing force between the mold A and the mold B.

3. The axial flow impeller blade pivot seal ring bonding tool according to claim 1, characterized in that: The upper mold A (1) comprises a flat plate structure A (101) and a lower convex structure A (102); positioning screw holes A (103) are provided at both ends of the flat plate structure A (101) for the upper mold A (1) to be fixed to the lower mold A (2) through positioning bolts A (3); the lower convex structure A (102) is arranged at the bottom of the flat plate structure A (101), and the lower convex structure A (102) is fastened and accommodated in the cavity structure A (202) of the lower mold A (2); The upper mold B (5) comprises a flat plate structure B (501) and a lower convex structure B (502); positioning screw holes B (503) are provided at both ends of the flat plate structure B (501) for the upper mold B (5) to be fixed to the lower mold B (6) through positioning bolts B (7); the lower convex structure B (502) is arranged at the bottom of the flat plate structure B (501), and the lower convex structure B (502) is fastened and accommodated in the cavity structure B (602) of the lower mold B (6).

4. The axial flow impeller blade pivot seal ring bonding tool according to claim 3, characterized in that: The middle of the flat plate structure A (101) is also provided with a lug screw hole A (104); the middle of the flat plate structure B (501) is also provided with a lug screw hole B (504).

5. The axial flow impeller blade pivot seal ring bonding tool according to claim 1, characterized in that: The oblique angles of the wedge-shaped structure A (201) and the wedge-shaped structure B (601) are both 45°.

6. The axial flow impeller blade pivot seal ring bonding tool according to claim 1, characterized in that: The downward convex structure A (102) and the downward convex structure B (502) have the same structural shape, both being V-shaped bosses.

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