CN214811878U

CN214811878U - On-spot spraying protection frock of steam turbine blade

Info

Publication number: CN214811878U
Application number: CN202120423808.6U
Authority: CN
Inventors: 邓超; 李洋; 高艳男; 宫伟兴; 张小伍; 王金春; 赵义瀚; 徐佰明; 郭鹏飞; 彭建强
Original assignee: Harbin Turbine Co Ltd
Current assignee: Harbin Turbine Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-11-23
Anticipated expiration: 2031-02-26

Abstract

A protection tool for on-site spraying of a turbine blade. The utility model particularly relates to a steam turbine blade field spraying protection frock. The utility model relates to a solve the problem that current blade spraying protection efficiency is low. Comprises a conformal baffle, a special clamp and a thermal spraying protective adhesive tape; the size of the conformal baffle is cut according to the length and the molded line of the blade, and the conformal baffle is attached to the blade to expose the spraying area; the upper portion processing of following the type baffle has crotch portion, special fixture fixes the crotch portion at following the type baffle, hot spraying protection sticky tape sets up the side in following type baffle and blade laminating department. The utility model is used for the on-spot spraying protection of steam turbine blade.

Description

On-spot spraying protection frock of steam turbine blade

Technical Field

The utility model particularly relates to a steam turbine blade field spraying protection frock.

Background

With the development of the power industry, more and more power plants supply heat or modify the flexibility of a steam turbine unit, when a low-pressure cylinder does not work, the steam outlet edge of a blade is very easy to be corroded by water, and the blade can be protected by spraying a water corrosion resistant coating by supersonic flame. When the hot spraying protection is carried out on the steam outlet edge area, other areas can be sprayed and protected through a certain tool, so that the coating layer is prevented from covering the non-spraying area. Traditionally, a thermal spraying protective adhesive tape is adopted to paste a non-spraying area, but when a rotor of a power plant is not disassembled and sprayed, the manual adhesive tape pasting efficiency is low due to the limitation of the position and the angle of a blade; and the blades are not cleaned, so that the adhesive tape is not easy to be firmly attached. Therefore, the protective tooling of the blade needs to be optimized during thermal spraying.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve the problem that current blade spraying protection efficiency is low, and provide a field spraying protection frock of steam turbine blade.

A protective tool for on-site spraying of a turbine blade comprises a conformal baffle, a special clamp and a thermal spraying protective adhesive tape; the size of the conformal baffle is cut according to the length and the molded line of the blade, and the conformal baffle is attached to the blade to expose the spraying area; the upper portion processing of following the type baffle has crotch portion, special fixture fixes the crotch portion at following the type baffle, hot spraying protection sticky tape sets up the side in following type baffle and blade laminating department.

The utility model has the advantages that:

the utility model has the characteristics of simple structure, convenient installation, low cost, high efficiency and the like, is convenient to operate and carry, and is very suitable for corrosion-resistant spraying of steam turbine blades for heat supply or flexibility improvement and the like;

the conformal baffle 1 can be adjusted conveniently according to the length and the profile of the blade, so that the coating can be uniformly distributed in the area needing spraying, and the conformal baffle is suitable for blades with various lengths and profiles.

Drawings

FIG. 1 is a schematic structural view of a protective tool for on-site spraying of a turbine blade; 1 is a free-form baffle, 2 is a special fixture, 3 is a thermal spraying protective adhesive tape, 4 is a blade and 5 is a coating area;

FIG. 2 is a schematic view of a conformal baffle structure;

FIG. 3 is a schematic structural view of a special fixture; 2-1 is a bow clamp, a screw rod 2-2, a rocker 2-3 and a clamping head 2-4.

Detailed Description

The first embodiment is as follows: with reference to fig. 1 and fig. 2, a turbine blade field spray protection tool according to the present embodiment includes a conformal baffle 1, a special fixture 2, and a thermal spray protection tape 3; the size of the conformal baffle 1 is cut according to the length and the molded line of the blade 4, the conformal baffle 1 is attached to the blade 4, and the spraying area is exposed; the upper portion processing of following type baffle 1 has hook portion, special fixture 2 fixes the hook portion at following type baffle 1, thermal spraying protection sticky tape 3 sets up the side in the department of following type baffle 1 and the laminating of blade 4.

According to the embodiment, the size of the baffle plate is adjustable according to the length and the profile of the blade, the baffle plate is cut according to the profile of the blade, and a special clamp and a thermal spraying protection adhesive tape are matched to protect the non-spraying area of the blade. The integral shape of the conformal baffle is similar to 7, the upper hook part can be used for protecting the non-spraying area at the top of the blade, and the conformal baffle can be conveniently fixed by using a special clamp. After the conformal baffle is attached to the blade, the conformal baffle is fixed on the blade by using a special clamp, and the distance between a chuck and the edge of a spraying area is 10-30 mm.

The thermal spraying protection adhesive tape is used for supplementing and fixing, is used for fixing the part of the baffle close to the blade root only when the length of the baffle is large and the special fixture cannot be independently fixed, and can be automatically adjusted according to actual conditions.

In the embodiment, firstly, the conformal baffle 1 is attached to the blade 4, the spraying area 5 is exposed, and the conformal baffle 1 is adjusted to a proper position; then, fixing the hook part of the conformal baffle 1 by using a special clamp 2; finally, the protection effect is checked, and a thermal spraying protective adhesive tape 3 is stuck on the area which is not firmly protected.

The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: the conformal baffle 1 is made of a copper plate and has a thickness of 0.5-2.0 mm. Other steps and parameters are the same as those in the first embodiment.

The third concrete implementation mode: referring to fig. 3, the difference between this embodiment and the first or second embodiment is: the special clamp 2 consists of an arch clamp 2-1, a screw rod 2-2, a rocker 2-3 and a chuck 2-4; a threaded hole is formed in the side wall of the opening side of the arched clamp 2-1, and the screw rod 2-2 penetrates through the threaded hole of the arched clamp 2-1 and the other side wall of the opening side of the arched clamp 2-1 to form a clamping opening; the rocker 2-3 is arranged at the tail part of the screw rod 2-2 and used for rotating the screw rod 2-3; the clamping heads 2-4 are installed at the head parts of the screw rods 2-2 through threaded connection and are used for being clamped on the blades 4. Other steps and parameters are the same as those in the first or second embodiment.

The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: and two ends of the rocker 2-3 are upset. Other steps and parameters are the same as those in one of the first to third embodiments.

The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: the screw rod 2-2, the rocker 2-3 and the chuck 2-4 are positioned on the same central line. Other steps and parameters are the same as those in one of the first to fourth embodiments.

Claims

1. A protective tool for on-site spraying of a turbine blade is characterized by comprising a conformal baffle (1), a special clamp (2) and a thermal spraying protective adhesive tape (3); the size of the conformal baffle (1) is cut according to the length and the molded line of the blade (4), and the conformal baffle (1) is attached to the blade (4) to expose a spraying area; processing along with the upper portion of type baffle (1) has crotch portion, special fixture (2) are fixed in the crotch portion of following type baffle (1), thermal spraying protection sticky tape (3) set up the side of following type baffle (1) and blade (4) laminating department.

2. The on-site spraying protection tool for the turbine blade according to claim 1, wherein the conformal baffle (1) is made of a copper plate and has a thickness of 0.5-2.0 mm.

3. The on-site spraying protection tool for the turbine blade according to claim 1, wherein the special clamp (2) consists of an arched clamp (2-1), a screw rod (2-2), a rocker (2-3) and a chuck (2-4); a threaded hole is formed in the side wall of the opening side of the arched clamp (2-1), and the screw rod (2-2) penetrates through the threaded hole of the arched clamp (2-1) and the other side wall of the opening side of the arched clamp (2-1) to form a clamping opening; the rocker (2-3) is arranged at the tail part of the screw rod (2-2) and is used for rotating the screw rod (2-2); the clamping heads (2-4) are installed at the heads of the screw rods (2-2) through threaded connection and are used for being clamped on the blades (4).

4. The on-site spray coating protection tool for the turbine blades as claimed in claim 3, wherein the two ends of the rocker (2-3) are upset.

5. The on-site spraying protection tool for the turbine blades according to claim 3, wherein the screw (2-2), the rocker (2-3) and the chuck (2-4) are located on the same central line.