Gas turbine blade root boss arc detection tool

Abstract

The utility model belongs to the technical field of gas turbine blade root boss arc detection, and especially relates to a gas turbine blade root boss arc detection tool comprising a positioning body and a measuring body, the measuring body is provided with a detection tool, the detection tool is provided with a blade root to be detected, a clamping mechanism is arranged between the positioning body and the measuring body, and the clamping mechanism is connected with the positioning body and the measuring body. Symmetrical positioning mechanisms are arranged at the upper end of the side, away from the measuring body, of the positioning body, the positioning mechanisms are matched with the two sides and the upper surface of the blade root, and the two positioning mechanisms are distributed on the two sides of a tooth-shaped groove in the positioning body; firstly, the arranged clamping mechanism can facilitate quick disassembly and assembly of the positioning body and the measuring body, and meanwhile, the connection reliability can be ensured, so that maintenance of the positioning body and the measuring body is facilitated; and secondly, the positioning mechanism can guide and position the blade root, so that the blade root can be quickly butted with the tooth-shaped groove in the positioning body, and the detection convenience and efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circular arc detection of blade root boss of a gas turbine blade, and in particular relates to a circular arc detection tool of a blade root boss of a gas turbine blade. Background Art

[0002] In the production of palm leaf-shaped turbine blades, arc-shaped bosses are generally provided on the air inlet and outlet sides of both ends of the blade root for assembly positioning. The arc-shaped surface dimensions are required to be high to ensure assembly accuracy. Therefore, it is very important to conduct dimensional inspection and approval during the production process to avoid leaving problems in the assembly process and affecting production progress.

[0003] After checking the public (announcement) number: CN203053376U, a gas turbine blade root boss circular arc detection tool is disclosed. This technology discloses "including a positioning body and a measuring body, the positioning body is provided with a toothed groove, the bottom of the toothed groove is provided with a top screw, the measuring body is fixed on the positioning body at one end of the toothed groove, the measuring body has an arc-shaped measuring surface on the upper surface, and the arc radius of the arc-shaped measuring surface is equal to the arc radius of the blade root boss circular arc detection tool, etc. When in use, the blade root is inserted into the toothed groove, the blade root boss circular arc detection tool is exposed, and the top screw is used to lift it up and firmly combine it with the toothed groove, which is the same as the load-bearing surface during actual assembly. Then, through light leakage detection and feeler gauge detection, it can be obtained whether the gap between the arc surface of the blade root boss circular arc detection tool and the arc measuring surface is within the required range. At the same time, it can also play the role of a stop gauge to measure the size of the tooth shape, which is less affected by tolerance, the detection result is stable, the detection is easy for one person, the structure is simple and the cost is low, it is easy to make, and the effect is significant. Technical effects such as ";

[0004] However, the blade root is not convenient to be plugged into the toothed groove on the positioning body, and it needs to be very accurately connected before it can be plugged in, which is not conducive to the detection work during actual processing and affects efficiency; secondly, the detection tools need to be regularly maintained, especially the positioning body and the measuring body, and the bolt fixing method between the two is not convenient to operate and is not conducive to rapid maintenance;

[0005] In order to solve the above problems, the present application proposes a gas turbine blade root boss arc detection tool. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides a gas turbine blade root boss arc detection tool, which has the characteristics of improving detection efficiency and facilitating maintenance.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas turbine blade root boss arc detection tool, comprising a positioning body and a measuring body, the measuring body is provided with a detection tool, the detection tool has a blade root to be detected, a locking mechanism is provided between the positioning body and the measuring body, a symmetrical positioning mechanism is provided at the upper end of the positioning body away from the measuring body, the positioning mechanism cooperates with both sides and the upper surface of the blade root, and the two positioning mechanisms are distributed on both sides of the toothed groove on the positioning body.

[0008] As a preferred technical solution of the utility model, the locking mechanism includes a locking slot provided in the positioning body and a socket provided on the positioning body, and a locking block arranged at the front end of the measuring body and cooperating with the locking slot. The locking mechanism also includes a connecting frame sliding in the measuring body and a locking spring arranged between the connecting frame and the measuring body. One end of the connecting frame is fixed to the locking block, and the other end is fixed to the pressure plate.

[0009] As a preferred technical solution of the utility model, the pressure plate is located on the side of the measuring body, and the clamping block is clamped with the inside of the clamping slot through a clamping spring.

[0010] As a preferred technical solution of the utility model, the engaging mechanism also includes an insertion rod fixedly arranged on a side of the measuring body close to the positioning body, the insertion rod is plugged into the slot, and the slot and the insertion rod are two groups arranged diagonally.

[0011] As a preferred technical solution of the utility model, the positioning mechanism includes a positioning seat fixed on the positioning body, a side positioning plate hinged on the positioning seat, and an upper positioning plate fixed on the top of the side positioning plate. A baffle is fixed on the positioning seat, and a return spring is also arranged between the end of the side positioning plate hinged to the positioning seat and the positioning seat, and the end of the side positioning plate away from the return spring is in contact with the baffle.

[0012] As a preferred technical solution of the utility model, the side positioning plates cooperate with the two side surfaces of the blade root, and the upper positioning plate cooperates with the top surface of the blade root.

[0013] Compared with the prior art, the beneficial effects of the utility model are: firstly, the locking mechanism can facilitate the rapid disassembly and assembly of the positioning body and the measuring body, while ensuring the reliability of the connection, thereby facilitating the maintenance and maintenance of the positioning body and the measuring body; secondly, the positioning mechanism can guide and position the blade root, which is convenient for rapid docking with the toothed groove on the positioning body, thereby improving the convenience and efficiency of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model in the detection state;

[0016] Figure 2 It is a structural schematic diagram of the main view of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the partial decomposition of the engaging mechanism in the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the enlarged part A of the utility model;

[0019] In the figure: 1. positioning body; 2. measuring body; 3. detection tool; 4. blade root; 5. locking mechanism; 51. slot; 52. socket; 53. clamping block; 54. connecting frame; 55. locking spring; 56. pressure plate; 57. insertion rod; 6. positioning mechanism; 61. positioning seat; 62. side positioning plate; 63. upper positioning plate; 64. baffle; 65. reset spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] See also Figure 1-4 The utility model provides the following technical solutions: a gas turbine blade root boss arc detection tool, comprising a positioning body 1 and a measuring body 2, a detection tool 3 is provided on the measuring body 2, a blade root 4 to be detected is provided on the detection tool 3, a locking mechanism 5 is provided between the positioning body 1 and the measuring body 2, a symmetrical positioning mechanism 6 is provided on the upper end of the positioning body 1 away from the measuring body 2, the positioning mechanism 6 cooperates with both sides and the upper surface of the blade root 4, and the two positioning mechanisms 6 are distributed on both sides of the toothed groove on the positioning body 1.

[0023] Specifically, the locking mechanism 5 includes a locking slot 51 provided in the positioning body 1 and a socket 52 provided on the positioning body 1, and a locking block 53 arranged at the front end of the measuring body 2 and cooperating with the locking slot 51. The locking mechanism 5 also includes a connecting frame 54 sliding in the measuring body 2 and a locking spring 55 arranged between the connecting frame 54 and the measuring body 2. One end of the connecting frame 54 is fixed to the locking block 53, and the other end is fixed to the pressure plate 56. In this embodiment, the locking mechanism 5 can facilitate the rapid disassembly and assembly of the positioning body 1 and the measuring body 2, while ensuring the connection reliability, thereby facilitating the maintenance and maintenance of the positioning body 1 and the measuring body 2.

[0024] Specifically, the pressure plate 56 is located on the side of the measuring body 2, and the clamping block 53 is clamped with the inside of the clamping slot 51 through the clamping spring 55. In this embodiment, the pressure plate 56 is a built-in hidden structure to avoid accidental touch.

[0025] Specifically, the engaging mechanism 5 further comprises an insert rod 57 fixedly arranged on a side of the measuring body 2 close to the positioning body 1 , the insert rod 57 is plugged and connected with the engaging slot 51 , and the engaging slot 51 and the insert rod 57 are two sets arranged diagonally.

[0026] Specifically, the positioning mechanism 6 includes a positioning seat 61 fixed on the positioning body 1, a side positioning plate 62 hinged on the positioning seat 61, and an upper positioning plate 63 fixed on the top of the side positioning plate 62. The positioning mechanism 6 can guide and position the blade root 4, facilitate rapid docking with the toothed groove on the positioning body 1, and improve the convenience and efficiency of detection. A baffle 64 is fixed on the positioning seat 61, and a return spring 65 is also arranged between the end of the side positioning plate 62 hinged to the positioning seat 61 and the positioning seat 61. The end of the side positioning plate 62 away from the return spring 65 contacts the baffle 64, and the hinged side positioning plate 62 cooperates with the return spring 65. The front end of the upper positioning plate 63 is set upward, all of which facilitate the docking of the blade root 4.

[0027] Specifically, the side positioning plates 62 cooperate with the two side surfaces of the blade root 4, and the upper positioning plates 63 cooperate with the top surface of the blade root 4. In this embodiment, after the blade root 4 enters between the detection tool 3, the side positioning plates 62, and the upper positioning plates 63, it just forms a shape for the blade root 4 to pass horizontally, thereby positioning the blade root 4 and facilitating the rapid docking of the blade root 4 with the toothed groove on the positioning body 1, thereby improving the detection efficiency.

[0028] The working principle and use process of the utility model: the side positioning plate 62 contacts the baffle 64 in the reset state, and the two side positioning plates 62 are opened in an "eight" shape;

[0029] During the inspection, the inspection tool 3 is installed first, and then the blade root 4 is placed on the upper end of the inspection tool 3 and slid in the direction of the positioning body 1, and the stacked side positioning plates 62 are in contact with the blade root 4. Under the action of the width of the blade root 4, the side positioning plates 62 at this time rotate on the positioning seat 61 at a certain angle, and the return spring 65 is compressed. Finally, the two side positioning plates 62 are parallel, and the two sides of 94 are positioned by the side positioning plates 62, and the upper positioning plate 63 positions the top edge of the blade root 4. After the blade root 4 is positioned, it is precisely docked with the toothed groove on the positioning body 1;

[0030] After the blade root 4 is inspected, it is removed from the positioning body 1, and the side positioning plate 62 is reset under the action of the reset spring 65, waiting for the next guiding and positioning work;

[0031] When the positioning body 1 and the measuring body 2 need to be disassembled for maintenance, the pressure plates 56 at both ends are pushed inward at the same time, the connecting frame 54 and the clamping block 53 follow the moving rod, the clamping spring 55 is compressed, the clamping block 53 is disengaged from the insertion groove 51, and then the measuring body 2 is pulled outward, the clamping block 53 is completely disengaged from the inside of the clamping groove 51, and the insertion rod 57 is also disengaged from the inside of the insertion hole 52, and the disassembly is completed;

[0032] During installation, the pressing plate 56 is also pressed to insert the clamping block 53 into the clamping slot 51 , and then the clamping block 53 and the clamping slot 51 are clamped and locked under the action of the clamping spring 55 .

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tool for detecting the circular arc of a blade root boss of a gas turbine blade, comprising a positioning body (1) and a measuring body (2), wherein a detection tool (3) is provided on the measuring body (2), and a blade root (4) to be detected is provided on the detection tool (3), wherein: A locking mechanism (5) is provided between the positioning body (1) and the measuring body (2); a symmetrical positioning mechanism (6) is provided at the upper end of the positioning body (1) away from the measuring body (2); the positioning mechanism (6) cooperates with both sides and the upper surface of the blade root (4); the two positioning mechanisms (6) are distributed on both sides of the toothed groove on the positioning body (1); The engaging mechanism (5) comprises a slot (51) provided in the positioning body (1), a socket (52) provided on the positioning body (1), and a block (53) provided at the front end of the measuring body (2) and cooperating with the slot (51); The positioning mechanism (6) comprises a positioning seat (61) fixed on the positioning body (1), a side positioning plate (62) hinged on the positioning seat (61), and an upper positioning plate (63) fixed on the top of the side positioning plate (62).

2. A gas turbine blade root boss arc detection tool according to claim 1, characterized in that: The engaging mechanism (5) further comprises a connecting frame (54) sliding in the measuring body (2) and an engaging spring (55) arranged between the connecting frame (54) and the measuring body (2); one end of the connecting frame (54) is fixed to the engaging block (53) and the other end is fixed to the pressing plate (56).

3. A gas turbine blade root boss arc detection tool according to claim 2, characterized in that: The pressing plate (56) is located on the side of the measuring body (2), and the clamping block (53) is clamped with the inside of the clamping slot (51) via a clamping spring (55).

4. A gas turbine blade root boss arc detection tool according to claim 1, characterized in that: The locking mechanism (5) further comprises an insertion rod (57) fixedly arranged on a side of the measuring body (2) close to the positioning body (1), the insertion rod (57) being plug-connected with the locking slot (51), and the locking slot (51) and the insertion rod (57) being two groups arranged diagonally.

5. A gas turbine blade root boss arc detection tool according to claim 1, characterized in that: A baffle (64) is fixed on the positioning seat (61), and a return spring (65) is arranged between one end of the side positioning plate (62) hinged to the positioning seat (61) and the positioning seat (61), and the end of the side positioning plate (62) away from the return spring (65) is in contact with the baffle (64).

6. A gas turbine blade root boss arc detection tool according to claim 5, characterized in that: The side positioning plates (62) cooperate with the two side surfaces of the blade root (4), and the upper positioning plate (63) cooperates with the top surface of the blade root (4).

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