CN216049656U

CN216049656U - Turbine blade measuring device

Info

Publication number: CN216049656U
Application number: CN202121784172.4U
Authority: CN
Inventors: 曹雪飞; 孙磊
Original assignee: Nanjing Zhibo Measurement And Control Technology Co ltd
Current assignee: Nanjing Zhibo Measurement And Control Technology Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-03-15
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a turbine blade measuring device, which relates to the field of detection and comprises a workbench, a clamping device, a bottom plate, a translation device and a detection device, wherein the clamping device is used for clamping and fixing a blade; the contact block is designed between the front measuring plate and the rear measuring plate, the surface contact of the detection rod and the blade is driven to offset through the driving device, the contact block is pushed to move between the front measuring plate and the rear measuring plate in a reaction mode, the detection devices on two sides of the blade detect simultaneously, the thickness of multiple points of the blade can be detected quickly, the problem that manual detection reading is wrong is avoided, the detection efficiency is high, and automation is convenient to realize.

Description

Turbine blade measuring device

Technical Field

The utility model relates to the field of measurement, in particular to a turbine blade measuring device.

Background

Turbine blades are important components of turbomachinery (e.g., steam turbines, gas turbines, water turbines, etc.) for directing fluid flow in a certain direction and for propelling a rotor to rotate.

The thickness of the blade of the turbine blade needs to be measured after the blade is produced, the traditional measurement is carried out by manually using some measuring tools such as calipers, gauges and the like, a plurality of point positions are generally selected for measurement in the measuring mode, and then the measurement mode is compared with a standard tolerance range to judge whether the thickness of the blade meets the standard or not. Because the blade quantity on a steam turbine rotor is more, so make artifical measurement work load great, efficiency is lower, and secondly artifical measurement reading can the error sometimes appear, makes the measuring result inaccurate.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a turbine blade measuring device in order to solve the above-mentioned problems occurring in the prior art.

The specific scheme is as follows: a turbine blade measuring device comprises a workbench, clamping devices, a bottom plate, a translation device and detection devices, wherein the clamping devices are used for clamping and fixing blades;

detection device includes curb plate and measuring subassembly, the curb plate is equipped with two, measuring subassembly is equipped with 3, and sets up between two curb plates, measuring subassembly includes preceding measuring plate, back measuring plate and deflector, measuring plate, back measuring plate and deflector from inside to outside in proper order with curb plate fixed connection, sliding connection has a plurality of measuring sticks on the deflector, the front end of measuring stick is equipped with the ball, and its rear end passes the notch fixedly connected with contact block of the n shape of preceding measuring plate, the contact block is located between preceding measuring plate and the back measuring plate, preceding measuring plate with be equipped with the contact one that corresponds with the contact block, back measuring plate is equipped with the contact two that corresponds with the contact block, still be equipped with resetting means on the measuring stick, resetting means is used for the restoration of measuring stick.

Preferably, the clamping device comprises a concave fixing block and a clamping cylinder, an output shaft of the clamping cylinder is fixedly connected with a clamping block, the clamping block is fixedly connected with a sliding rod, and the sliding rod is connected with a guide block fixedly connected with the bottom plate in a sliding manner.

Preferably, the translation device includes translation cylinder and translation board, the translation board passes through guide rail and bottom plate sliding connection, curb plate and translation board fixed connection, the output shaft and the translation board fixed connection of translation cylinder, translation cylinder fixed connection is on the bottom plate.

Preferably, the resetting device comprises a blocking ring and a spring, the blocking ring is fixedly connected with the detection rod, and the spring is sleeved on the detection rod and is positioned between the blocking ring and the guide plate.

Preferably, the plurality of detection rods on the guide plate are different in length.

The utility model has the advantages that:

the contact block is designed between the front measuring plate and the rear measuring plate, the surface contact of the detection rod and the blade is driven to offset through the driving device, the contact block is pushed to move between the front measuring plate and the rear measuring plate in a reaction mode, the detection devices on two sides of the blade detect simultaneously, the thickness of multiple points of the blade can be detected quickly, the problem that manual detection reading is wrong is avoided, the detection efficiency is high, and automation is convenient to realize.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the detection device;

FIG. 3 is a schematic view of the structure of the clamping device;

fig. 4 is a schematic structural view of a front measuring board.

In the figure: 1-a workbench, 2-a clamping device, 21-a fixed block, 22-a clamping cylinder, 23-a clamping block, 24-a sliding rod, 25-a guide block, 3-a bottom plate, 4-a translation device, 41-a translation cylinder, 42-a translation plate and 43-a guide rail;

5-detection device, 50-side plate, 51-measurement component, 511-front measurement plate, 512-rear measurement plate, 513-guide plate, 514-detection rod, 515-contact block, 516-contact one, 517-contact two, 518-stop ring and 519-spring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

A turbine blade measuring device comprises a workbench 1, a clamping device 2, a bottom plate 3, a translation device 4 and a detection device 5, wherein the clamping device 2 is used for clamping and fixing a blade, the bottom plate 3 is provided with the two detection devices 5, and the translation device 4 is used for driving the detection devices 5 to move back and forth on the bottom plate 3;

the detection device 5 comprises a side plate 50 and a measuring component 51, the side plate 50 is provided with two, the measuring component 51 is provided with 3, and is arranged between the two side plates 50, the measuring component 51 comprises a front measuring plate 511, a rear measuring plate 512 and a guide plate 513, the front measuring plate 511, the rear measuring plate 512 and the guide plate 513 are fixedly connected with the side plate 50 from inside to outside in sequence, the guide plate 513 is connected with a plurality of detecting rods 514 in a sliding manner, the front end of each detecting rod 514 is provided with a ball, the rear end of each detecting rod passes through an n-shaped notch 5110 fixedly connected with a contact block 515 on the front measuring plate 511, the contact block 515 is positioned between the front measuring plate 511 and the rear measuring plate 512, the front measuring plate 511 is provided with a contact point one 516 corresponding to the contact block 515, the rear measuring plate 512 is provided with a contact point two 517 corresponding to the contact block 515, and the detecting rod 514 is also provided with a reset device, the reset device is used to detect the reset of the lever 514. The n-shaped notch 5110 facilitates the installation of the test rod.

Preferably, the clamping device 2 comprises a concave fixed block 21 and a clamping cylinder 22, an output shaft of the clamping cylinder 22 is fixedly connected with a clamping block 23, a sliding rod 24 is fixedly connected to the clamping block 23, and the sliding rod 24 is slidably connected with a guide block 25 fixedly connected to the bottom plate 3. The purpose of the sliding rod 24 and the guide block 25 is to increase the stability of the movement of the clamping block 23.

Preferably, the translation device 4 includes a translation cylinder 41 and a translation plate 42, the translation plate 42 is slidably connected to the bottom plate 3 through a guide rail 43, the side plate 50 is fixedly connected to the translation plate 42, an output shaft of the translation cylinder 41 is fixedly connected to the translation plate 42, and the translation cylinder 41 is fixedly connected to the bottom plate 3.

Preferably, the resetting device includes a stop ring 518 and a spring 519, the stop ring 518 is fixedly connected with the detection rod 514, and the spring 519 is sleeved on the detection rod 514 and is located between the stop ring 518 and the guide plate 513. The spring 519 is used to detect that the lever 514 is automatically returned after being out of contact with the blade.

Preferably, the length of the plurality of detection rods 514 on the guide plate 513 is different, and the length of the detection rods 514 is determined according to the thickness of the actual blade sampling point.

The working process and the principle thereof are as follows:

the blade root of the blade is firstly placed into the fixed block 21, the output shaft of the clamping cylinder 22 extends to push the clamping block 23 to slide towards the blade root, the blade root is clamped, and the sliding rod 24 and the guide block 25 can play a good role in guiding and stabilizing the clamping block.

After the blade root is clamped, the blade is positioned between the two detection devices 5, the initial detection block is in contact conduction with the contact I516, and the background computer can detect the conduction signal.

Then the translation cylinder 41 pushes the translation plate 42 to move a preset distance on the bottom plate 3, if the thickness of the blade is qualified, each detection rod 514 is in contact with the surface of the blade, the blade reacts on the detection rod 514 to force the detection rod 514 to slide and retract a certain distance in the guide plate 513, the spring 519 is compressed under the action of the baffle ring 518 and the guide plate 513, the contact block 515 at this time is separated from the contact conduction state with the first contact 516 and is not in contact conduction with the second contact 517, and the background computer judges that the thickness of the blade is qualified.

If the thickness of the blade is small, the detection rod 514 cannot contact and abut against the blade after the translation plate 42 moves a preset distance, and the contact block 515 and the contact point one 516 still keep a contact conduction state, then the background computer determines that the thickness is too small.

If the thickness of the blade is larger, the detection rod 514 will contact with the blade when the translation plate 42 has not reached the preset position, so that the contact block 515 will be switched from the state of contact conduction with the contact point one 516 to the state of contact conduction with the contact point two 517, once the contact block 515 is in contact conduction with the contact point two 517, the background computer will determine that the thickness is too large, and will close the command of continuing to move forward of the translation cylinder 41, so as to avoid the contact block 515 from being displaced too much and damaging the detection rod 514 and related components.

After the detection is finished, the translation cylinder 41 resets, the detection rod 514 automatically resets under the action of the spring 519, and finally the blade root is loosened by the clamping cylinder 22, so that the blade can be taken down.

Based on the above: will contact piece 515 design in the front between measuring board 511 and back measuring board 512, the surface contact through drive arrangement drive test rod 514 and blade offsets, the reaction promotes contact piece 515 and moves between measuring board 511 and back measuring board 512 in the front, detection device 5 simultaneous detection of blade both sides, can detect the thickness of blade multiple spot fast, the problem of artifical detection reading mistake has been avoided, and detection efficiency is high, be convenient for realize the automation.

It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims

1. A turbine blade measuring device is characterized by comprising a workbench (1), a clamping device (2), a bottom plate (3), a translation device (4) and a detection device (5), wherein the clamping device (2) is used for clamping and fixing a blade, the bottom plate (3) is provided with two detection devices (5), and the translation device (4) is used for driving the detection devices (5) to move back and forth on the bottom plate (3);

the detection device (5) comprises side plates (50) and measuring components (51), wherein the side plates (50) are provided with two, the measuring components (51) are provided with 3, and are arranged between the two side plates (50), each measuring component (51) comprises a front measuring plate (511), a rear measuring plate (512) and a guide plate (513), the measuring plates, the rear measuring plates (512) and the guide plates (513) are fixedly connected with the side plates (50) from inside to outside in sequence, a plurality of detecting rods (514) are connected onto the guide plates (513) in a sliding manner, the front ends of the detecting rods (514) are provided with balls, the rear ends of the detecting rods penetrate through n-shaped notches (5110) of the front measuring plates (511) and are fixedly connected with contact blocks (515), the contact blocks (515) are positioned between the front measuring plates (511) and the rear measuring plates (512), the front measuring plates (511) and the contact blocks (515) are provided with contacts (516) corresponding to the contact blocks (515), the rear measuring plate (512) is provided with a second contact (517) corresponding to the contact block (515), the detecting rod (514) is further provided with a resetting device, and the resetting device is used for resetting the detecting rod (514).

2. A turbine blade measuring device according to claim 1, characterised in that the clamping device (2) comprises a concave fixing block (21) and a clamping cylinder (22), the output shaft of the clamping cylinder (22) is fixedly connected with a clamping block (23), a slide rod (24) is fixedly connected to the clamping block (23), and the slide rod (24) is slidably connected with a guide block (25) fixedly connected to the base plate (3).

3. A turbine blade measuring device according to claim 1, wherein the translation device (4) comprises a translation cylinder (41) and a translation plate (42), the translation plate (42) is slidably connected with the bottom plate (3) through a guide rail (43), the side plate (50) is fixedly connected with the translation plate (42), an output shaft of the translation cylinder (41) is fixedly connected with the translation plate (42), and the translation cylinder (41) is fixedly connected with the bottom plate (3).

4. The turbine blade measuring device of claim 1, wherein the reset device comprises a stop ring (518) and a spring (519), the stop ring (518) is fixedly connected with the detection rod (514), and the spring (519) is sleeved on the detection rod (514) and is located between the stop ring (518) and the guide plate (513).

5. A turbine blade measuring device according to claim 1, characterised in that several measuring rods (514) on the guide plate (513) are of different lengths.