Safety optimization device for IGV / CV1 actuating mechanism of gas turbine

Abstract

The utility model relates to a gas turbine IGV / CV1 actuating mechanism safety optimizing device which comprises a rotating ring, a roller arc plate, guide rail side plates and sliding blocks, the roller arc plate and the two guide rail side plates are fixedly arranged in a guide rail groove of the rotating ring, and the sliding blocks are arranged between the roller arc plate and the two guide rail side plates in a sliding mode. The roller arc surface, facing the central axis of the rotating ring, of the roller arc plate is concentric with the rotating ring, a roller set protruding out of the roller arc surface is arranged on the roller arc surface, and the roller set is connected with the abutting arc surface on the sliding block in an abutting mode; the two side faces, adjacent to the guide rail side plates, of the sliding block are provided with a plurality of balls protruding out of the two side faces, the balls can be embedded into ball grooves in the guide rail side plates, the balls and the rotating ring are arranged in the same circle, and the ball grooves and the rotating ring are arranged in the same circle. The roller arc plates and the guide rail side plates are used for forming the sliding rails, the sliding blocks are used for replacing middle rolling wheels in the prior art, the sliding blocks are not prone to being disengaged from the sliding rails, and therefore the overall safety margin of the rotating ring is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas turbines, in particular to a safety optimization device for an IGV / CV1 actuator of a gas turbine. Background Art

[0002] The adjustable guide vanes (IGV) / adjustable stator vanes (CV1) of a gas turbine are used to adjust and control the gas entering the gas turbine. Generally, the adjustment is achieved by rotating the guide vanes through a rotating ring. For example, the drive ring assembly of the gas turbine inlet guide vanes and the gas turbine disclosed in China Authorization Announcement No. CN 208918600 U, the drive ring assembly avoids the wear problem caused by sliding connection through the cooperation of roller rails and rollers, thereby facilitating the maintenance of the equipment.

[0003] However, there are still some problems with the solutions using roller rails and rollers in the above-mentioned public documents. After the rotating ring has been running for a long time and the roller rails and rollers have been worn accordingly, the rollers may be separated from the roller rails because there are no corresponding limiting measures for the rollers, causing safety hazards. Utility Model Content

[0004] The purpose of the utility model is to provide a safety optimization device for a gas turbine IGV / CV1 actuator, which is used to solve the above-mentioned problems existing in the prior art.

[0005] In order to solve the above problems, the utility model provides a safety optimization device for the IGV / CV1 actuator of a gas turbine, comprising a rotating ring, a roller arc plate, a guide rail side plate and a sliding block, the roller arc plate and the two guide rail side plates are fixedly arranged in the guide rail groove of the rotating ring, and a sliding block is slidably arranged between the roller arc plate and the two guide rail side plates; the roller arc surface of the roller arc plate facing the central axis of the rotating ring is cocircular with the rotating ring, the roller arc surface is provided with a roller group protruding from the surface, and the roller group is contact-connected with the contact arc surface on the sliding block; the two side surfaces of the sliding block adjacent to the guide rail side plates are provided with a plurality of balls protruding from the two side surfaces, and the balls can be embedded in the ball grooves on the guide rail side plates, the arrangement of the balls is cocircular with the rotating ring, and the ball groove is cocircular with the rotating ring.

[0006] The gas turbine IGV / CV1 actuator safety optimization device provided by the utility model also has the following technical features:

[0007] Furthermore, an arc plate groove in which the roller arc plate can be embedded is provided in the guide rail groove of the rotating ring, and the guide rail side plate is also embedded in the arc plate groove at the same time.

[0008] Furthermore, the roller group is arranged in an equidistant array along the circumference of the roller arc surface, the roller group is arranged in the middle position of the circumference of the roller arc surface, and mounting holes that can cooperate with countersunk bolts are provided on both sides of the roller group.

[0009] Furthermore, the sliding block is provided with ball tracks at the parts on both sides of the abutting arc surface, and the balls are filled in the ball tracks so that the balls can be alternately embedded in the ball grooves.

[0010] Furthermore, the ball track is in the shape of an oblong hole.

[0011] Furthermore, two ball grooves are provided on a single guide rail side plate, and four ball tracks are correspondingly provided on the sliding block; a ball cover plate is also provided on the sliding block, and the ball is fixed in the ball track by the ball cover plate.

[0012] Furthermore, the two ball bearing cover plates are arranged on both sides of the abutting arc surface.

[0013] Furthermore, a connecting rod is fixedly provided on the surface of the sliding block opposite to the abutting arc surface, and the two ball bearing cover plates are arranged on both sides of the connecting rod.

[0014] The utility model has the following beneficial effects: the device uses roller arc plates and guide rail side plates to form a sliding track, and uses a sliding block to replace the middle roller in the prior art, which can greatly reduce the wear of the rotating ring during long-term operation and eliminate the influence caused by deformation. On the other hand, because the ball on the sliding block is clamped in the ball groove of the guide rail side plate, when the sliding block slides circumferentially, the sliding block as a whole is limited by the guide rail side plate in the radial direction and the axial direction at the same time, the sliding block is not easy to fall off the sliding track, and thus the overall safety margin of the rotating ring is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 Detailed diagram of a single device combination;

[0017] Figure 3 for Figure 2 Schematic diagram of structural decomposition;

[0018] Figure 4 for Figure 3 Schematic diagram of roller arc plate, guide rail side plate and sliding block structure decomposition;

[0019] Figure 5 for Figure 4 Structural details of the roller arc plate and guide rail side plate;

[0020] Figure 6 for Figure 4 Schematic diagram of the slider structure decomposition in . DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0022] like Figures 1 to 6 In the embodiment of the gas turbine IGV / CV1 actuator safety optimization device of the utility model shown in the figure, the gas turbine IGV / CV1 actuator safety optimization device includes a rotating ring 1, a roller arc plate 2, a guide rail side plate 3 and a sliding block 4, the roller arc plate 2 and the two guide rail side plates 3 are fixed in the guide rail groove 101 of the rotating ring 1 by bolts, and a sliding block 4 is slidably arranged between the roller arc plate 2 and the two guide rail side plates 3, that is, the roller arc plate 2 and the two guide rail side plates 3 form a sliding track so that the sliding block 4 slides therein; the roller arc surface of the roller arc plate 2 facing the central axis of the rotating ring 1 is cocircular with the rotating ring 1, and a roller group 21 protruding from the roller arc surface is provided on the roller arc surface, and the roller group 21 is in contact with the contact arc surface on the sliding block 4; the two side surfaces of the sliding block 4 adjacent to the guide rail side plate 3 are provided with a plurality of balls 41 protruding from the two side surfaces, and the balls 41 can be embedded in the ball grooves 301 on the guide rail side plate 3, and the arrangement of the balls 41 is cocircular with the rotating ring 1, and the ball grooves 301 are cocircular with the rotating ring 1.

[0023] When the rotating ring 1 rotates, the sliding block 4 is connected to the roller group 21 in the radial direction of the rotating ring 1, and the sliding block 4 is clamped in the ball groove 301 on the guide rail side plate 3 using the ball 41 in the axial direction of the rotating ring 1, so that the sliding block 4 slides on the ball groove 301 composed of the roller arc plate 2 and the guide rail side plate 3 through the roller group 21 and the ball 41.

[0024] The roller arc plate 2 and the guide rail side plate 3 form a sliding track, and the sliding block 4 is used to replace the middle roller in the prior art, which can greatly reduce the wear of the rotating ring 1 during long-term operation and eliminate the influence caused by deformation. On the other hand, because the ball 41 on the sliding block 4 is clamped in the ball groove 301 of the guide rail side plate 3, when the sliding block 4 slides circumferentially, the sliding block 4 as a whole is limited by the guide rail side plate 3 in the radial direction and the axial direction at the same time, the sliding block 4 is not easy to fall off the sliding track, thereby improving the overall safety margin of the rotating ring 1.

[0025] In one embodiment of the present application, preferably, an arc plate groove 102 in which the roller arc plate 2 can be embedded is provided in the guide rail groove 101 of the rotating ring 1, and the guide rail side plate 3 is also embedded in the arc plate groove 102 at the same time; the provision of the arc plate groove 102 can further firmly fix the roller arc plate 2 and the guide rail side plate 3 on the rotating ring 1, thereby further improving the safety margin.

[0026] In one embodiment of the present application, preferably, the roller group 21 is arranged in an equidistant array along the circumference of the roller arc surface, and the roller group 21 is arranged in the middle position of the circumference of the roller arc surface. Both sides of the roller group 21 are provided with mounting holes that can cooperate with countersunk bolts; that is, the roller group 21 on the roller arc plate 2 is placed in the middle, and cooperates with the balls 31 on both sides to effectively support and limit the sliding block 4, so that the sliding block 4 is not easy to fall off, and it is also convenient to install and fix the roller arc plate 2.

[0027] In one embodiment of the present application, preferably, the sliding block 4 is provided with ball tracks 401 on the parts on both sides of the contact arc surface, and the balls 41 are filled in the ball tracks 401; the ball tracks 401 are arranged on the parts on both sides of the contact arc surface, which will not reduce the structural strength of the sliding block 4 when it contacts the roller group 21; the balls 41 are filled in the ball tracks 401, so that the balls 41 can be alternately embedded in the ball grooves 301 to reduce sliding and / or rolling resistance.

[0028] In one embodiment of the present application, preferably, the ball track 401 is in the shape of an oblong hole, and the ball track 401 does not exceed the range of the part that contacts the two sides of the arc surface, so that the balls 41 can be effectively rotated.

[0029] In one embodiment of the present application, preferably, two ball grooves 301 are provided on a single guide rail side plate 3, and four ball tracks 401 are correspondingly provided on the sliding block 4; on the one hand, the ball grooves 301 are placed on two opposite surfaces adjacent to the sliding block 4, so that the overall structural strength of the sliding block 4 is guaranteed; on the other hand, the paired ball grooves 301 provided on the single guide rail side plate 3 can improve the stability of the sliding block 4 during sliding and prevent wear; a ball cover plate 42 is also provided on the sliding block 4, and the ball 41 is fixed in the ball track 401 by the ball cover plate 42, and the ball cover plate 42 is fixed to the sliding block 4 by bolts.

[0030] In one embodiment of the present application, preferably, the two ball cover plates 42 are arranged on both sides of the abutting arc surface, that is, the ball cover plates 42 will not be released from the roller assembly 21 to prevent the ball cover plates 42 from being damaged.

[0031] In one embodiment of the present application, preferably, a connecting rod 43 is fixedly provided on the surface of the sliding block 4 opposite to the said abutting arc surface, and the two said ball cover plates 42 are arranged on both sides of the connecting rod 43, and the connecting rod 43 is used to fix the inner cylinder of the gas turbine, so that the sliding block 4 supports the rotating ring 1; the ball cover plates 42 are arranged on both sides of the connecting rod 43, so that the ball track 401 and the ball cover plates 42 will not affect the structural strength of the connecting rod.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A gas turbine IGV / CV1 actuator safety optimization device, characterized in that: The invention comprises a rotating ring (1), a roller arc plate (2), a guide rail side plate (3) and a sliding block (4); the roller arc plate (2) and two guide rail side plates (3) are fixedly arranged in a guide rail groove (101) of the rotating ring (1); a sliding block (4) is slidably arranged between the roller arc plate (2) and the two guide rail side plates (3); a roller arc surface of the roller arc plate (2) facing the central axis of the rotating ring (1) is cocircular with the rotating ring (1); a convex A roller group (21) protrudes from the surface, and the roller group (21) is contact-connected with the contact arc surface on the sliding block (4); two side surfaces of the sliding block (4) adjacent to the guide rail side plate (3) are provided with a plurality of balls (41) protruding from the two side surfaces, and the balls (41) can be embedded in ball grooves (301) on the guide rail side plate (3), and the arrangement of the balls (41) is cocircular with the rotating ring (1), and the ball groove (301) is cocircular with the rotating ring (1).

2. The gas turbine IGV / CV1 actuator safety optimization device according to claim 1 is characterized in that: An arc plate groove (102) in which the roller arc plate (2) can be embedded is provided in the guide rail groove (101) of the rotating ring (1), and the guide rail side plate (3) is also embedded in the arc plate groove (102) at the same time.

3. The gas turbine IGV / CV1 actuator safety optimization device according to claim 2 is characterized in that: The roller group (21) is arranged in an equidistant array along the circumference of the roller arc surface, the roller group (21) is arranged at a middle position in the circumference of the roller arc surface, and mounting holes capable of matching countersunk bolts are provided on both sides of the roller group (21).

4. The gas turbine IGV / CV1 actuator safety optimization device according to claim 3 is characterized in that: The sliding block (4) is provided with ball tracks (401) at the parts on both sides of the abutting arc surface, and the balls (41) are filled in the ball tracks (401), so that the balls (41) can be alternately embedded in the ball grooves (301).

5. The gas turbine IGV / CV1 actuator safety optimization device according to claim 4 is characterized in that: The ball track (401) is in the shape of an oblong hole.

6. The gas turbine IGV / CV1 actuator safety optimization device according to claim 5 is characterized in that: Two ball grooves (301) are provided on a single guide rail side plate (3), and four ball tracks (401) are provided on the sliding block (4) accordingly; a ball cover plate (42) is also provided on the sliding block (4), and the ball (41) is fixed in the ball track (401) by the ball cover plate (42).

7. The gas turbine IGV / CV1 actuator safety optimization device according to claim 6 is characterized in that: The two ball bearing cover plates (42) are arranged on both sides of the abutting arc surface.

8. The gas turbine IGV / CV1 actuator safety optimization device according to claim 7 is characterized in that: A connecting rod (43) is fixedly provided on the surface of the sliding block (4) opposite to the abutting arc surface, and the two ball bearing cover plates (42) are arranged on both sides of the connecting rod (43).

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