Steam turbine rotor blade capable of being positioned and installed

Abstract

The utility model discloses a steam turbine moving blade capable of being positioned and installed, relates to the technical field of steam turbine moving blade structures, and solves the problem that the existing steam turbine moving blade can not be positioned and installed well, so that the steam turbine moving blade is likely to loosen and fall off in the working process, and large potential safety hazards exist. According to the key points of the technical scheme, the blade mounting device comprises a mounting shaft body, connecting seats are arranged at the two ends of the mounting shaft body, fixing shafts are arranged on one sides of the connecting seats, positioning mounting grooves are formed in the outer wall of the mounting shaft body, fixing screw holes are formed in the positioning mounting grooves, and blades are mounted outside the mounting shaft body; first positioning sliding seats are arranged at the two ends of each blade, side blades are installed on the outer portions of the two ends of the installation shaft body, two side blocking seats are installed on one sides of the side blades, and a fixing end is arranged at one end of each side blocking seat. And the effect of positioning and mounting the moving blade of the steam turbine is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine rotor blade structures, in particular to a steam turbine rotor blade that can be positioned and installed. Background Art

[0002] Steam turbine blades are a general term for the steel used for the moving and static blades in steam turbines. Blades are key components of steam turbines and are also one of the most delicate and important parts. They withstand high temperature, high pressure, huge centrifugal force, steam force, steam excitation force, corrosion and vibration, as well as water droplet erosion in the wet steam zone under extremely harsh conditions. Their aerodynamic performance, processing geometry, surface roughness, installation clearance, operating conditions, scaling and other factors all affect the efficiency and output of the steam turbine; their structural design, vibration intensity and operating mode have a decisive influence on the safety and reliability of the unit.

[0003] After searching, the authorization announcement number CN211573603U discloses a turbine moving blade that can be positioned and installed. Its structure includes a blade body, and the bottom of the blade body is provided with a mounting surface connected to the outside world. A mounting protrusion is formed on the mounting surface, and symmetrical down-pressure components are provided on both sides of the mounting protrusion. A groove for accommodating the down-pressure component is provided on the mounting surface, and the groove is located directly below the down-pressure component. Symmetrical detection mechanisms are provided at both ends of the mounting surface. This utility model not only ensures the symmetry of the installation of the moving blade body and the external mounting position, but also ensures the firmness of the installation of the moving blade body and the external mounting position.

[0004] However, the existing turbine blades cannot be well positioned and installed, so that the turbine blades may become loose and fall off during operation, which will pose a great safety hazard. Therefore, the market is in urgent need of a turbine blade that can be positioned and installed to solve these problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a steam turbine rotor blade that can be positioned and installed, so as to solve the problem proposed in the above background technology that the existing steam turbine rotor blades cannot be well positioned and installed, so that the steam turbine rotor blades may become loose and fall off during operation, which will pose a great safety hazard.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A turbine rotor blade that can be positioned and installed includes a mounting shaft body, connecting seats are provided at both ends of the mounting shaft body, a fixed shaft is provided on one side of the connecting seat, a positioning mounting groove is provided inside the outer wall of the mounting shaft body, a fixing screw hole is provided inside the positioning mounting groove, a blade is installed on the outside of the mounting shaft body, a positioning slide is provided at both ends of the blade, side blades are installed on the outside of both ends of the mounting shaft body, and a side stop seat is installed on one side of the side blade.

[0008] By adopting the above technical solution, the turbine rotor blades can be conveniently positioned and installed.

[0009] Furthermore, a limiting wheel is installed at one end of the outer wall of the connecting seat, and two limiting wheels are provided. The two limiting wheels are symmetrical with respect to the vertical center line of the mounting shaft.

[0010] By adopting the above technical solution, the turbine rotor blades can be conveniently rotated through the limiting wheel.

[0011] Furthermore, there are four positioning and mounting grooves, which are symmetrical with respect to a vertical center line of one end of the mounting shaft, and there are a plurality of fixing screw holes.

[0012] By adopting the above technical solution, the blades and side blades can be conveniently positioned and installed through the provided positioning and installation grooves.

[0013] Furthermore, the positioning slide 1 is an integral structure with the blade, and four positioning slides 1 are provided, and the four positioning slides 1 are symmetrical with respect to the vertical center line of the blade.

[0014] By adopting the above technical solution, the structure between the positioning slide and the blade can be made more solid.

[0015] Furthermore, the positioning slide 1 is located inside the positioning installation slot, and a mounting screw hole corresponding to the fixing screw hole is provided inside the positioning slide 1. The positioning slide 1 is fixedly connected to the positioning installation slot by a fixing screw.

[0016] By adopting the above technical solution, a pair of blades can be positioned and installed through the positioning slide.

[0017] Furthermore, two side blades are provided, and a second positioning slide is provided at one end of the side blade. The second positioning slide is located inside the positioning installation groove, and the second positioning slide is fixedly connected to the positioning installation groove by installing screws.

[0018] By adopting the above technical solution, the side blades can be positioned and installed in the positioning and installation grooves.

[0019] Furthermore, two side stoppers are provided, one end of each side stopper is provided with a fixed end, and the fixed end is fixedly connected to the mounting shaft by a connecting screw.

[0020] By adopting the above technical solution, the side blades can be limited and blocked to avoid the blades from falling off and separating from the mounting shaft during operation, thereby affecting the working effect.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] (1) The utility model aligns the positioning slide 1 provided on the blade with the positioning installation groove provided on the installation shaft, and then slides the positioning slide 1 into the interior of the positioning installation groove, so that the blade can be positioned and installed. Finally, the positioning slide 2 provided on the side blade is installed on both sides of the installation shaft, so that the positioning slide 2 is located inside the positioning installation groove, so that the side blade can be positioned and installed, thereby preventing the blade and the side blade from shaking during operation, thereby affecting the working effect of the blade and the side blade;

[0023] (2) The utility model installs the side stop seat on one side of the side blade and fixes the side stop seat to the mounting shaft through connecting screws. The side stop seat can improve the safety effect and prevent the blade or side blade from falling off and separating from the mounting shaft, thereby causing greater safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0025] Figure 2 This is the overall front view of the utility model;

[0026] Figure 3 This is the main view of the installation shaft of the utility model;

[0027] Figure 4 It is an overall side sectional view of the utility model;

[0028] Figure 5 For the utility model Figure 2 A partial enlarged view of area A;

[0029] Figure 6 For the utility model Figure 4 A partial enlarged view of area B.

[0030] In the figure: 1. Mounting shaft; 101. Positioning mounting groove; 102. Fixing screw hole; 2. Connecting seat; 3. Limiting wheel; 4. Fixed shaft; 5. Blade; 501. Positioning slide 1; 502. Mounting screw hole; 6. Fixing screw; 7. Side blade; 701. Positioning slide 2; 8. Mounting screw; 9. Side stop seat; 901. Fixed end; 10. Connecting screw. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely 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, rather than all the embodiments.

[0032] See also Figure 1-6 , the utility model provides an embodiment: a turbine rotor blade that can be positioned and installed, including a mounting shaft body 1, a connecting seat 2 is provided at both ends of the mounting shaft body 1, a limiting wheel 3 is installed at one end of the outer wall of the connecting seat 2, and two limiting wheels 3 are provided. The two limiting wheels 3 are symmetrical about the vertical center line of the mounting shaft body 1, and a fixed shaft 4 is provided on one side of the connecting seat 2. A positioning mounting groove 101 is provided inside the outer wall of the mounting shaft body 1, and a fixing screw hole 102 is provided inside the positioning mounting groove 101. There are four positioning mounting grooves 101, and the four positioning mounting grooves 101 are symmetrical about the vertical center line of one end of the mounting shaft body 1. A plurality of fixing screw holes 102 are provided. A blade 5 is installed on the outside of the mounting shaft body 1, and a positioning slide 501 is provided at both ends of the blade 5. A side blade 7 is installed on the outside, and a side stop seat 9 is installed on one side of the side blade 7. There are two side stop seats 9, and a fixed end 901 is provided at one end of the side stop seat 9. The fixed end 901 is fixedly connected to the mounting shaft 1 by a connecting screw 10, wherein the limiting wheel 3 can enable the external device to drive the turbine moving blade to rotate, and the positioning and mounting groove 101 can be used to conveniently position and install the blade 5 and the side blade 7, and the side stop seat 9 can limit the blade 5 and the side blade 7 to avoid the blade 5 and the side blade 7 from falling off and separating from the mounting shaft 1, thereby bringing a greater safety hazard. It should be noted that in order to save space and highlight the innovative elements of this patent, such as the working principle of how the turbine moving blade is specifically installed and used, it will not be repeated in this patent.

[0033] See Figure 2-6, the positioning slide 501 and the blade 5 are an integral structure, and four positioning slides 501 are provided. The four positioning slides 501 are symmetrical about the vertical center line of the blade 5, and the positioning slide 501 is located inside the positioning mounting groove 101. The interior of the positioning slide 501 is provided with mounting screw holes 502 corresponding to the fixing screw holes 102, and the positioning slide 501 is fixedly connected to the positioning mounting groove 101 by fixing screws 6. There are two side blades 7, and one end of the side blade 7 is provided with a positioning slide 2 701, which is located inside the positioning mounting groove 101, and the positioning slide 2 701 is fixedly connected to the positioning mounting groove 101 by mounting screws 8. The positioning slide 1 501 can be used to conveniently position and install the blade 5, and the positioning slide 2 701 can be used to conveniently position and install the side blade 7, which can make the installation more secure.

[0034] Working principle: When in use, align the positioning slide 1 501 set on the blade 5 with the positioning installation groove 101 set on the mounting shaft 1, and then slide the positioning slide 1 501 into the inside of the positioning installation groove 101, so that the blade 5 can be positioned and installed, and finally install the positioning slide 2 701 set on the side blade 7 on both sides of the mounting shaft 1, so that the positioning slide 2 701 is located inside the positioning installation groove 101, so that the side blade 7 can be positioned and installed, and finally install the side stop 9 on one side of the side blade 7, and fix the side stop 9 to the mounting shaft 1 by connecting the screws 10. The side stop 9 can improve the safety effect and prevent the blade 5 or the side blade 7 from falling off and separating from the mounting shaft 1, thereby posing a greater safety hazard.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A turbine rotor blade capable of being positioned and mounted, comprising a mounting shaft (1), characterized in that: Both ends of the mounting shaft (1) are provided with a connecting seat (2), one side of the connecting seat (2) is provided with a fixed shaft (4), the interior of the outer wall of the mounting shaft (1) is provided with a positioning mounting groove (101), the interior of the positioning mounting groove (101) is provided with a fixing screw hole (102), the outside of the mounting shaft (1) is provided with a blade (5), both ends of the blade (5) are provided with a positioning slide (501), the outside of both ends of the mounting shaft (1) are provided with a side blade (7), and one side of the side blade (7) is provided with a side stop seat (9).

2. The positionable steam turbine rotor blade according to claim 1, characterized in that: A limiting wheel (3) is installed at one end of the outer wall of the connecting seat (2), and two limiting wheels (3) are provided. The two limiting wheels (3) are symmetrical with respect to the vertical center line of the mounting shaft (1).

3. The positionable steam turbine rotor blade according to claim 2, characterized in that: There are four positioning and mounting grooves (101), and the four positioning and mounting grooves (101) are symmetrical with respect to the vertical center line of one end of the mounting shaft (1). There are a plurality of fixing screw holes (102).

4. The positionable steam turbine rotor blade according to claim 3, characterized in that: The positioning slide one (501) and the blade (5) are an integrated structure, and four positioning slides (501) are provided. The four positioning slides (501) are symmetrical with respect to the vertical center line of the blade (5).

5. The positionable steam turbine rotor blade according to claim 4, characterized in that: The positioning slide seat 1 (501) is located inside the positioning installation groove (101), and a mounting screw hole (502) corresponding to the fixing screw hole (102) is provided inside the positioning slide seat 1 (501). The positioning slide seat 1 (501) is fixedly connected to the positioning installation groove (101) by a fixing screw (6).

6. The positionable steam turbine rotor blade according to claim 5, characterized in that: Two side blades (7) are provided, and a second positioning slide (701) is provided at one end of the side blade (7). The second positioning slide (701) is located inside the positioning installation groove (101), and the second positioning slide (701) is fixedly connected to the positioning installation groove (101) by means of a mounting screw (8).

7. The positionable steam turbine rotor blade according to claim 6, characterized in that: There are two side blocks (9), one end of which is provided with a fixed end (901). The fixed end (901) is fixedly connected to the mounting shaft (1) via a connecting screw (10).

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