Turbine blade detection device

Abstract

The utility model discloses a steam turbine blade detection device, an adjusting mechanism comprises a fixed seat, one end of the bottom surface of the inner wall of the fixed seat is fixedly connected with a supporting spring, the bottom of the supporting spring is fixedly connected with an adjusting seat, one end of the surface of the adjusting seat is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with a rotating shaft. The other end of the rotating shaft is rotationally connected with the inner wall of the fixing seat, a threaded hole is formed in one end of the inner wall of the adjusting seat, the inner wall of the threaded hole is in threaded connection with a threaded abutting rod, the upper end and the lower end of the threaded abutting rod both extend to the outer side of the adjusting seat, and the lower end of the threaded abutting rod is in movable contact with the inner side of the fixing seat; the measuring instrument on the side edge is supported through the supporting frame, the adjusting base at the bottom of the supporting frame can rotate in the fixing base through the rotating shaft, and when the measuring instrument is adjusted to move to a proper position, the orientation of the supporting frame can be gradually and finely adjusted by rotating the threaded abutting rod in the supporting frame; therefore, the measuring instrument can be moved to a proper measuring position more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring devices, and particularly relates to a steam turbine blade detection device. Background Art

[0002] The detection technology of steam turbine blades mainly focuses on the measurement of shape error and the correctness of mutual position. For the measurement of shape error, a dial indicator or a micrometer is usually used. The blade is fixed on a measurement platform, and the actual measurement values are obtained by scanning different parts of the blade and compared with the design standard to judge shape errors such as camber and twist. To measure the correctness of the mutual position of the blades, tools such as a dial indicator and a measurement base are used to ensure its consistency with the design requirements by measuring the relative positions between key points of the blade.

[0003] In the prior art, when measuring steam turbine blades with different structural types, it is difficult to control the adjustment range, so it may be necessary to frequently adjust the dial indicator. Moreover, the adjustment stroke of the common bracket for dial indicator measurement is small, which is not conducive to the rapid detection of steam turbine blades. Summary of the Utility Model

[0004] The technical problems to be solved by the utility model are as follows: when measuring steam turbine blades with different structural types, it is necessary to frequently adjust the dial indicator, and the adjustment stroke of the common bracket for dial indicator measurement is small.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A steam turbine blade detection device includes an adjustment mechanism, a clamping mechanism is arranged above the adjustment mechanism, and a measuring instrument is arranged on the side of the clamping mechanism;

[0007] It further includes:

[0008] Among them, the adjustment mechanism includes a fixed seat, one end of the inner bottom surface of the fixed seat is fixedly connected with a support spring, the bottom of the support spring is fixedly connected with an adjustment seat, one end of the surface of the adjustment seat is fixedly connected with a rotating shaft, and the other end of the rotating shaft is rotatably connected with the inner wall of the fixed seat;

[0009] Among them, a threaded hole is opened at one end of the inner wall of the adjustment seat, a threaded abutting rod is threadedly connected to the inner wall of the threaded hole, the upper and lower ends of the threaded abutting rod extend to the outside of the adjustment seat, and the lower end of the threaded abutting rod is in movable contact with the inner side of the fixed seat.

[0010] As a further scheme of the utility model: a support frame is fixedly connected to the top of the adjustment seat and away from the threaded abutting rod, the support frame extends upward as a whole, and a first chute is opened in the inner wall of the support frame, and the length direction of the first chute is the same as the length direction of the support frame.

[0011] As a further solution of the present utility model: on one side of the outer wall of the fixed seat, an instrument box is fixedly installed. A plurality of slots are opened at the top of the instrument box, and the inner diameter of each slot gradually decreases along the length direction of the instrument box. A storage slot is also opened on one side of the top of the instrument box, and the bottom surface of the instrument box is flush with the bottom surface of the fixed seat.

[0012] As a further solution of the present utility model: the clamping mechanism includes a rotating frame. A second chute is opened on the inner wall of the rotating frame, and the length direction of the second chute is consistent with the length direction of the rotating frame. One end of the rotating frame is rotatably connected with a connecting head, and a fastening screw penetrates through the outer wall of the connecting head, and the end of the fastening screw is threadedly connected with the inner wall of the rotating frame.

[0013] As a further solution of the present utility model: an insertion hole is opened at one end of the inner wall of the connecting head, and the inner wall of the insertion hole is penetrated and connected with a measuring instrument. A blocking block is slidably connected to the inner wall of the connecting head near the insertion hole. One side of the blocking block is fixedly connected with a return spring, and the other end of the return spring is fixedly connected with the inner wall of the connecting head. The end of the blocking block away from the return spring is fixedly connected with a gasket, and the side wall of the gasket abuts against the measuring instrument, and the top of the blocking block is provided as an inclined surface.

[0014] As a further solution of the present utility model: a threaded lifting rod is threadedly connected to the inner wall of the connecting head above the blocking block. The top of the threaded lifting rod penetrates upward through the connecting head and is fixedly connected with a knob. The other end of the threaded lifting rod is located inside the connecting head and is fixedly connected with a pressing head. The pressing head is integrally spherical, and the bottom surface of the pressing head abuts against the top surface of the blocking block.

[0015] As a further solution of the present utility model: a bolt penetrates through the inner wall of the first chute, and the outer wall of the bolt penetrates through the inner side of the second chute. A nut is threadedly connected to the end of the bolt, and the surface of the nut abuts against the rotating frame.

[0016] The beneficial effects of the present utility model:

[0017] The present utility model supports the measuring instrument on the side through a support frame. The adjusting seat at the bottom of the support frame can rotate in the fixed seat through a rotating shaft. When adjusting the measuring instrument to move to a suitable position, by rotating the threaded abutting rod inside the support frame, the orientation of the support frame can be gradually finely adjusted, so that the measuring instrument can be moved to a more accurate measuring position, and the operation is simple;

[0018] A rotating frame is arranged on the surface of the support frame for connecting measuring instruments, and the support frame and the rotating frame are fastened by bolts and nuts. This connection method can not only facilitate the adjustment of the height of the measuring instrument in the vertical direction, but also effectively increase the measuring stroke and expand the measuring range of the workpiece by adjusting the relative position between the support frame and the rotating frame.

[0019] An instrument box is arranged on the outside of the fixed seat. Through the various slots and storage grooves opened on the surface, the instrument box can hold measuring instruments of different models, such as functional instruments like dial indicators, lever dial indicators, scribing needles, etc., to meet different measurement requirements and scribing marking functions. Brief Description of the Drawings

[0020] The following further describes the present utility model with reference to the drawings.

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is a sectional structure schematic diagram of the adjusting mechanism in the present utility model;

[0023] Figure 3 is a schematic diagram of the overall structure of the rotating frame in the present utility model;

[0024] Figure 4 is Figure 3 an enlarged structure schematic diagram of area A of

[0025] Figure 5 is a top view structure schematic diagram of the instrument box in the present utility model.

[0026] In the figure: 1. Adjusting mechanism; 101. Fixed seat; 102. Support spring; 103. Adjusting seat; 104. Rotating shaft; 105. Threaded hole; 106. Threaded abutting rod; 107. Instrument box; 108. Slot; 109. Storage groove; 110. Support frame; 111. First chute; 112. Bolt; 113. Nut; 2. Clamping mechanism; 201. Rotating frame; 202. Second chute; 203. Fastening screw; 204. Connector; 205. Insertion hole; 206. Abutting block; 207. Return spring; 208. Gasket; 209. Threaded lifting rod; 210. Knob; 211. Extrusion head; 3. Measuring instrument. Detailed Embodiment

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] As Figures 1-5 shown, a steam turbine blade detection device includes an adjustment mechanism 1. Above the adjustment mechanism 1, a clamping mechanism 2 is provided. On the side of the clamping mechanism 2, a measuring instrument 3 is provided. It also includes: Among them, the adjustment mechanism 1 includes a fixed seat 101. One end of the inner bottom surface of the fixed seat 101 is fixedly connected to a support spring 102. The bottom of the support spring 102 is fixedly connected to an adjustment seat 103. One end of the surface of the adjustment seat 103 is fixedly connected to a rotating shaft 104. The other end of the rotating shaft 104 is rotatably connected to the inner wall of the fixed seat 101. Among them, a threaded hole 105 is opened at one end of the inner wall of the adjustment seat 103. A threaded abutting rod 106 is threadedly connected to the inner wall of the threaded hole 105. The upper and lower ends of the threaded abutting rod 106 extend to the outside of the adjustment seat 103, and the lower end of the threaded abutting rod 106 is in movable contact with the inner side of the fixed seat 101. As Figure 2 shown, the support spring 102 pushes the adjustment seat 103 to rotate clockwise within the fixed seat 101;

[0029] At the top of the adjustment seat 103 and at the end away from the threaded abutting rod 106, a support frame 110 is fixedly connected. The support frame 110 extends upward as a whole, and a first chute 111 is opened on the inner wall of the support frame 110. The length direction of the first chute 111 is the same as the length direction of the support frame 110. On one side of the outer wall of the fixed seat 101, an instrument box 107 is fixedly installed. A plurality of slots 108 are opened at the top of the instrument box 107. The inner diameters of each of the slots 108 gradually decrease along the length direction of the instrument box 107. On one side of the top of the instrument box 107, a storage groove 109 is also opened. The bottom surface of the instrument box 107 is flush with the bottom surface of the fixed seat 101. As Figure 5 shown, dial indicators or other instruments of different models can be inserted into the slots 108 with different apertures. The instrument box 107 increases the grounding area of the fixed seat 101, thereby improving the stability of the device;

[0030] The clamping mechanism 2 includes a rotating frame 201. A second chute 202 is opened on the inner wall of the rotating frame 201. The length direction of the second chute 202 is the same as the length direction of the rotating frame 201. One end of the rotating frame 201 is rotatably connected to a connecting head 204. A fastening screw 203 penetrates through the outer wall of the connecting head 204. The end of the fastening screw 203 is threadedly connected to the inner wall of the rotating frame 201. As Figure 4 shown, by tightening the fastening screw 203, the angle between the connecting head 204 and the rotating frame 201 is fixed;

[0031] A socket 205 is provided at one end of the inner wall of the connector 204, and the inner wall of the socket 205 is connected to the measuring instrument 3 through the socket 205. A stopper 206 is slidably connected to the inner wall of the connector 204 near the socket 205. A return spring 207 is fixedly connected to one side of the stopper 206, and the other end of the return spring 207 is fixedly connected to the inner wall of the connector 204. A gasket 208 is fixedly connected to the end of the stopper 206 away from the return spring 207. The side wall of the gasket 208 is against the measuring instrument 3, and the top of the stopper 206 is set to an inclined surface, such as Figure 4 As shown, the return spring 207 pulls the stopper 206 to retract into the connector 204;

[0032] The inner wall of the connector 204 is threadedly connected with a threaded lifting rod 209 located above the stop block 206. The top of the threaded lifting rod 209 passes through the connector 204 upward and is fixedly connected with a knob 210. The other end of the threaded lifting rod 209 is located inside the connector 204 and is fixedly connected with an extrusion head 211. The extrusion head 211 is spherical as a whole, and the bottom surface of the extrusion head 211 is against the top surface of the stop block 206. Figure 4 As shown, the extrusion head 211 descends, and the stopper 206 is pushed to move to the left;

[0033] The inner wall of the slide groove 111 is penetrated by a bolt 112, and the outer wall of the bolt 112 is penetrated by the inner side of the slide groove 202. The end of the bolt 112 is threadedly connected with a nut 113, and the surface of the nut 113 is against the rotating frame 201. The nut 113 and the bolt 112 jointly clamp the support frame 110 and the rotating frame 201.

[0034] The working principle of this utility model:

[0035] When the device is in use, the measuring instrument 3 to be used is taken out from the instrument box 107, and the measuring instrument 3 is placed inside the socket 205, and then the knob 210 is rotated to drive the threaded lifting rod 209 to be screwed into the connector 204, and the extrusion head 211 is lowered to push the top surface of the stop block 206, so that the stop block 206 is pushed to move toward the inside of the socket 205, and then the gasket 208 clamps and fixes the measuring instrument 3;

[0036] Secondly, during adjustment, the angle between the rotating frame 201 and the connecting head 204 can be adjusted by loosening the fastening screw 203. After loosening the nut 113, the rotating frame 201 can be driven to rise and fall along the slide groove 111, and the horizontal distance between the connecting head 204 and the support frame 110 can be changed. In addition, when fine-tuning the position of the measuring instrument 3, by rotating the threaded push rod 106, the threaded push rod 106 pushes the fixed seat 101 and props up the adjustment seat 103, so that the adjustment seat 103 rotates in the fixed seat 101 through the rotating shaft 104, thereby changing the overall angle orientation of the support frame 110.

[0037] The above has described in detail an embodiment of the present utility model, but the above content is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made within the scope of the application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A steam turbine blade detection device, comprising an adjustment mechanism (1), a clamping mechanism (2) is arranged above the adjustment mechanism (1), and a measuring instrument (3) is arranged on the side of the clamping mechanism (2); Characterized in that, It further comprises: Wherein, the adjustment mechanism (1) includes a fixed seat (101), one end of the bottom surface of the inner wall of the fixed seat (101) is fixedly connected with a support spring (102), the bottom of the support spring (102) is fixedly connected with an adjustment seat (103), one end of the surface of the adjustment seat (103) is fixedly connected with a rotating shaft (104), and the other end of the rotating shaft (104) is rotatably connected to the inner wall of the fixed seat (101); Wherein, a threaded hole (105) is opened at one end of the inner wall of the adjustment seat (103), a threaded abutting rod (106) is threadedly connected to the inner wall of the threaded hole (105), the upper and lower ends of the threaded abutting rod (106) extend to the outside of the adjustment seat (103), and the lower end of the threaded abutting rod (106) is in movable contact with the inner side of the fixed seat (101).

2. The steam turbine blade detection device according to claim 1, characterized in that, A support frame (110) is fixedly connected to the top of the adjustment seat (103) and at the end away from the threaded abutting rod (106), the support frame (110) extends upward as a whole, and a first chute (111) is opened on the inner wall of the support frame (110), and the length direction of the first chute (111) is the same as the length direction of the support frame (110).

3. A steam turbine blade detection device according to claim 1, characterized in that, An instrument box (107) is fixedly installed on one side of the outer wall of the fixed seat (101), a plurality of slots (108) are opened on the top of the instrument box (107), the inner diameters of each of the slots (108) gradually decrease along the length direction of the instrument box (107), a storage groove (109) is also opened on one side of the top of the instrument box (107), and the bottom surface of the instrument box (107) is flush with the bottom surface of the fixed seat (101).

4. A steam turbine blade detection device according to claim 1, characterized in that, The clamping mechanism (2) includes a rotating frame (201), a second chute (202) is opened on the inner wall of the rotating frame (201), the length direction of the second chute (202) is the same as the length direction of the rotating frame (201), one end of the rotating frame (201) is rotatably connected to a connecting head (204), a fastening screw (203) passes through the outer wall of the connecting head (204), and the end of the fastening screw (203) is threadedly connected to the inner wall of the rotating frame (201).

5. The steam turbine blade detection device according to claim 4, wherein An insertion hole (205) is opened at one end of the inner wall of the connecting head (204), the inner wall of the insertion hole (205) is connected through the measuring instrument (3), a blocking block (206) is slidably connected to the inner wall of the connecting head (204) and near the insertion hole (205), one side of the blocking block (206) is fixedly connected with a return spring (207), the other end of the return spring (207) is fixedly connected to the inner wall of the connecting head (204), a gasket (208) is fixedly connected to the end of the blocking block (206) away from the return spring (207), the side wall of the gasket (208) abuts against the measuring instrument (3), and the top of the blocking block (206) is set as an inclined surface.

6. The turbine blade detection device according to claim 4, characterized in that, A threaded lifting rod (209) is threadedly connected to the inner wall of the connector head (204) and above the abutting block (206). The top of the threaded lifting rod (209) passes upward through the connector head (204) and is fixedly connected to a knob (210). The other end of the threaded lifting rod (209) is located inside the connector head (204) and is fixedly connected to an extrusion head (211). The extrusion head (211) is spherical as a whole, and the bottom surface of the extrusion head (211) abuts against the top surface of the abutting block (206).

7. The steam turbine blade detection device according to claim 2, characterized in that, A bolt (112) is penetratingly connected to the inner wall of the first chute (111). The outer wall of the bolt (112) is penetratingly connected to the inside of the second chute (202). A nut (113) is threadedly connected to the end of the bolt (112), and the surface of the nut (113) abuts against the rotating frame (201).

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