Bonding device special for KB type runner blade sealing

Abstract

The utility model discloses a special bonding device for KB-type runner blade seals, which comprises two groups of KB-type runner blade seals, the KB-type runner blade seals are oppositely arranged and are respectively fixed through a clamping assembly, a stable pushing assembly is arranged in the clamping assembly, the KB-type runner blade seals are arranged on the stable pushing assembly, and the KB-type runner blade seals are arranged on the stable pushing assembly. The bottoms of the clamping assemblies are fixedly connected through alignment clamping plates. The KB type runner blade sealing and bonding device has the advantages of being simple in structure, low in cost, easy to operate, safe, reliable, convenient and fast to machine and manufacture and convenient to use; the device integrates multiple functions of clamping, aligning and bonding, so that the operation steps are simplified, the bonding quality of the sealing strip is improved, and the error of manual operation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of the overhaul of hydro-generator units, in particular to a special bonding device for the KB type runner blade seal. Background Art

[0002] In a Kaplan hydro-generator unit, there is a key seal at the connection part between the runner hub and the runner blade. It can not only prevent external water from infiltrating through this gap, but also prevent the hydraulic oil in the runner from leaking out, avoid the "three leakage problems" of the runner components, and ensure the safe and stable operation of the unit. The KB type sealing technology is widely used in industries such as energy and chemical engineering, aerospace, etc. due to its high sealing performance and durability. At the installation and overhaul site of hydro-generator units, it is usually necessary to manually bond the KB type sealing strip. However, due to reasons such as the large size of the KB type seal and the relatively hard sealing material, relying solely on manual bonding by workers often causes problems such as misalignment of the interfaces and misalignment of the seals, ultimately resulting in an unsatisfactory bonding effect of the KB type seal and affecting the subsequent installation and use quality. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above deficiencies and provide a special bonding device for the KB type runner blade seal that integrates clamping, centering, and bonding functions to improve the pasting quality of the KB type blade seal.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: it includes a centering fixture sleeved on the surface of the KB type runner blade seal. The outer side of the centering fixture is slidably matched with the inside of the clamping groove body. One end of the adjusting screw is threadedly matched with the surface of the clamping groove body. The two clamping groove bodies are connected by a positioning card board.

[0005] Preferably, the centering fixture is a cuboid structure made of silica gel.

[0006] Preferably, the clamping groove body is a U-shaped groove body structure.

[0007] Preferably, one side of the clamping groove body is provided with a connecting plate, and screw holes are opened on the surface of the connecting plate and the surface of the positioning card board.

[0008] Preferably, both ends of the positioning card board are U-shaped structures that fit with the bottom of the clamping groove body, and screw holes are opened on the U-shaped structures of the positioning card board.

[0009] Preferably, an operating handle is arranged at the top of the adjusting screw.

[0010] Preferably, the end of the KB type runner blade seal is set as an irregular arc to increase the adhesion area.

[0011] Advantages of the Utility Model

[0012] The KB - type runner blade seal bonding device provided by the present utility model has the advantages of simple structure, low cost, simple operation, safety and reliability, convenient processing and production, and easy use; this device integrates multiple functions such as clamping, alignment, and bonding, simplifies the operation steps, improves the quality of seal strip bonding, and reduces the error of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present utility model;

[0014] Figure 2 It is a schematic diagram of the first connection relationship of the clamping groove body of the present utility model;

[0015] Figure 3 It is a schematic diagram of the second connection relationship of the clamping groove body of the present utility model;

[0016] 1. KB - type runner blade seal; 2. Centering fixture; 3. Clamping groove body; 4. Adjusting screw; 5. Alignment card board. 31. Connecting plate; 41. Operating handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0018] As Figure 1 shown, it includes a centering fixture 2 sleeved on the surface of the KB - type runner blade seal 1. The outer side of the centering fixture 2 is in sliding fit with the inside of the clamping groove body 3. One end of the adjusting screw 4 is in threaded fit with the surface of the clamping groove body 3. The two clamping groove bodies 3 are connected by an alignment card board 5. In this embodiment, the KB - type runner blade seals 1 are arranged oppositely with a gap in the middle. The adhesive surfaces of the two groups of KB - type runner blade seals 1 are ensured to be aligned through the fixation of the clamping assembly, and then one group of KB - type runner blade seals 1 is pushed towards the other group by the stable pushing assembly to achieve abutment.

[0019] Preferably, the centering fixture 2 is a cuboid structure made of silica gel. In this embodiment, the clamping block is a cuboid, and through - holes corresponding to the interfaces of the KB - type runner blade seal 1 are provided therein, facilitating the movement of the KB - type runner blade seal 1 along the inside of the clamping block. The material of the centering fixture 2 can also be, for example, rubber, gel, foam liquid crystal, etc., facilitating the stable movement of the KB - type runner blade seal 1 therein. At the same time, it is easy to tear the silica gel after the sealing is completed.

[0020] Preferably, the clamping groove body 3 is a U - shaped groove body structure. This solution belongs to the prior art. During use, the centering fixture 2 is clamped inside the clamping groove body 3 to ensure the alignment of the centering fixture 2.

[0021] Preferably, as Figure 2As shown, a connecting plate 31 is provided on one side of the clamping groove body 3. Screw holes are formed on the surface of the connecting plate 31 and the surface of the alignment clamping plate 5. This solution is the first connection method between the clamping plate 5 and the clamping groove body 3. The fixed connection is achieved through the threaded cooperation between the connecting plate 31 and the alignment clamping plate 5. The width of the alignment clamping plate 5 is the same as that of the clamping groove body 3, which is convenient for adjusting the positions of the clamping groove bodies 3 during installation to ensure that the interfaces of the KB type runner blade seals 1 are opposite to each other.

[0022] Preferably, as Figure 3 shown, both ends of the alignment clamping plate 5 are U-shaped structures that cooperate with the bottom of the clamping groove body 3. Screw holes are formed on the U-shaped structure of the alignment clamping plate 5. This solution is the second connection method between the clamping plate 5 and the clamping groove body 3. By setting both ends of the alignment clamping plate 5 as U-shaped, during use, the U-shaped ends of the alignment clamping plate 5 are sleeved on the bottom of the clamping groove body 3 and fixed by threading.

[0023] Preferably, an operating handle 41 is provided at the top of the adjusting screw 4. Since the target of this application is the runner blade, usually the blade has a large volume, and it is more labor-saving to set the handle 41 to rotate the adjusting screw 4.

[0024] Preferably, the end of the KB type runner blade seal 1 is set as an irregular arc, which is used to increase the adhesion area. Increasing the adhesion area can make the adhesion of the KB type runner blade seal 1 more firm.

[0025] The operation steps of this embodiment are as follows: During use, first insert two groups of KB type runner blade seals 1 into the centering fixture 2 respectively, then place each centering fixture 2 into the clamping groove body 3, tighten and fix them through the tightening mechanism, then align the two clamping groove bodies 3 through the alignment clamping plate 5 and fix them with the alignment clamping plate 5. This ensures that all components are in an aligned state. Then, apply adhesive to the interface surface of the KB type runner blade seal 1. Finally, slightly loosen the tightening mechanism on one of the clamping groove bodies 3 and push the KB type runner blade seal 1 inside towards the other KB type runner blade seal 1 to make them adhesively sealed.

[0026] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The embodiments and the features in the embodiments in this application can be arbitrarily combined with each other without conflict. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A special bonding device for the seal of a KB type runner blade, comprising a centering fixture (2) sleeved on the surface of the KB type runner blade seal (1), characterized in that, The outside of the centering fixture (2) is in sliding fit with the inside of the clamping groove body (3), the surface of the clamping groove body (3) is in threaded fit with one end of the adjusting screw (4), and the two clamping groove bodies (3) are connected by a positioning card plate (5).

2. The special bonding device for the seal of the KB type runner blade according to claim 1, characterized in that, The centering fixture (2) is a cuboid structure made of silica gel.

3. The special bonding device for the seal of the KB type runner blade according to claim 1, characterized in that, The clamping groove body (3) is a U-shaped groove body structure.

4. The special bonding device for the seal of the KB type runner blade according to claim 3, characterized in that, One side of the clamping groove body (3) is provided with a connecting plate (31), and screw holes are formed on the surface of the connecting plate (31) and the surface of the positioning card plate (5).

5. The special bonding device for the seal of the KB type runner blade according to claim 1, characterized in that, Both ends of the positioning card plate (5) are U-shaped structures that fit with the bottom of the clamping groove body (3), and screw holes are formed in the U-shaped structure of the positioning card plate (5).

6. The special bonding device for the seal of the KB type runner blade according to claim 1, characterized in that, An operation handle (41) is arranged at the top of the adjusting screw (4).

7. A special bonding device for the seal of a KB type runner blade, according to claim 1, characterized in that, The end of the KB type runner blade seal (1) is set as an irregular arc to increase the adhesion area.

Images