CN219103943U

CN219103943U - Rotatable positioning device for measuring head of target gun for laser measurement

Info

Publication number: CN219103943U
Application number: CN202223121498.6U
Authority: CN
Inventors: 苏江华; 余漩; 蓝祝山; 麦云坤; 王汉洮; 杨钦尧
Original assignee: Zhiwei Power Wuxi Co ltd
Current assignee: Zhiwei Power Wuxi Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-05-30
Anticipated expiration: 2032-11-23

Abstract

The utility model relates to the technical field of turbine overhaul, in particular to a rotatable positioning device for a target gun measuring head for laser measurement, which comprises an outer sleeve, wherein an inner sleeve is movably arranged in the outer sleeve, a positioning pipe is fixedly arranged at the lower end part of the inner sleeve, a clamping sleeve is movably arranged in the outer sleeve above the inner sleeve, the target gun measuring head is movably arranged in the clamping sleeve, a lower target gun measuring head rod is fixedly arranged at the lower end part of the target gun measuring head, and the lower section of the lower target gun measuring head rod is arranged in the positioning pipe. According to the utility model, the target gun measuring head is installed into the mounting groove formed in the clamping sleeve, the lower target gun measuring head rod at the lower end part of the target gun measuring head is inserted under the mounting groove, and finally three fastening bolts are adopted to be installed into the side wall of the outer sleeve, the inner sleeve and the clamping sleeve can be fixed on the target gun measuring head by the three fastening bolts, the inner sleeve can freely rotate in the outer sleeve by using the axle center, and the clamping sleeve can prevent the fastening bolts from damaging the target gun measuring head during fastening and locking.

Description

Rotatable positioning device for measuring head of target gun for laser measurement

Technical Field

The utility model relates to the technical field of maintenance of steam turbines, in particular to a rotatable positioning device for a target gun measuring head for laser measurement.

Background

The steam turbine is a key device of the power plant, and the steam turbine overhaul is an important work in the power plant overhaul, and has great influence on the safe production and overhaul period of the power plant. The dynamic and static gaps of the steam turbine reach the optimal state, and the dynamic and static gaps have very important significance for improving the stability and the thermal efficiency of the unit. Under the 'full cylinder' state, along with the screw fastening, the metal cylinder body can produce the deformation, leads to former clearance to change, can not reach the setting value, influences unit efficiency. In the prior art, in the face of the situation, only the mode of sticking adhesive tape to tooth tips, plastering red lead on a rotor and turning the rotor by using a full cylinder is adopted, and the cylinder is repeatedly opened to repair the size of the choke piece and adjust the steam seal gap so as to ensure that the full cylinder gap reaches the standard. The period is long, and the labor is consumed. The target gun is an important component for laser measurement, the measuring head is a sphere, the highest point of the sphere needs to be placed at the tooth tip position, the head of the target gun is aligned with the laser tracker, a data signal is sent, and the laser tracker can accurately measure the size. When measuring the baffle choke piece and leaf top gland seal size under the large-scale steam turbine "full real jar" state, because the jar space is narrow and small, the baffle diameter is too big, and light is dim, personnel's operation difficulty influences the measurement accuracy.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a rotatable positioning device for a target gun measuring head for laser measurement.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a rotatable positioner of target rifle gauge head for laser measurement, includes the overcoat, the inside movable mounting of overcoat has the endotheca, the lower tip fixed mounting of endotheca has the registration tube, is located the inside movable mounting of overcoat of endotheca top has the cutting ferrule, the inside movable mounting of cutting ferrule has the target rifle gauge head, the lower tip fixed mounting of target rifle gauge head has lower target rifle gauge head pole, the lower segment of lower target rifle gauge head pole is installed in the registration tube inside, the lower tip fixed mounting of lower target rifle gauge head pole has laser contact sensor, the circumference surface of overcoat has three fastening bolt through screw thread installation.

As a preferable technical scheme of the utility model, the upper end part of the outer sleeve is provided with a third inner diameter groove, the inner wall of the third inner diameter groove is provided with a second inner diameter groove, the bottom of the second inner diameter groove is provided with a first inner diameter groove in a penetrating way, the positioning pipe is arranged in the first inner diameter groove formed in the outer sleeve, and the inner sleeve is arranged in the second inner diameter groove formed in the outer sleeve.

As a preferable technical scheme of the utility model, the lower end part of the positioning tube is provided with the tooth tip positioning opening, the clamping sleeve is arranged in the third inner diameter groove formed in the outer sleeve, the upper end part of the clamping sleeve is provided with the mounting groove in a penetrating way, the target gun measuring head is arranged in the mounting groove formed in the clamping sleeve, and the lower target gun measuring head rod is arranged in the positioning tube.

Compared with the prior art, the utility model has the following beneficial effects:

1. the rotatable positioning device of the target gun measuring head for laser measurement can easily place the highest point of the target gun ball measuring head at the highest point of the tooth tip when the large-diameter baffle choke plate and the blade top vapor seal are subjected to laser measurement in a dim environment under the limited space of a full-solid cylinder state after the cylinder body connecting screw rod is fastened, the inner sleeve can rotate along with the target gun, and the target gun can easily align with the laser tracker to send measurement data signals. The measuring error is reduced, the size of the choke piece and the steam seal clearance are accurately adjusted, the whole cylinder reaches the standard, and the overhaul efficiency is improved.

2. The target gun measuring head is installed into the mounting groove formed in the clamping sleeve, the lower target gun measuring head rod at the lower end of the target gun measuring head is inserted into the lower portion of the mounting groove, finally three fastening bolts are adopted to be installed into the side wall of the outer sleeve, the inner sleeve and the clamping sleeve can be fixed on the target gun measuring head through the three fastening bolts, the inner sleeve can freely rotate in the outer sleeve through the axle center, and the clamping sleeve can prevent the fastening bolts from damaging the target gun measuring head during fastening and locking.

Drawings

FIG. 1 is a schematic view of the jacket structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of a target gun probe according to the present utility model;

FIG. 3 is a schematic view of the structure of the fastening bolt of the present utility model;

fig. 4 is a schematic structural view of the inner sleeve of the present utility model.

Wherein: 1. a jacket; 11. a first inner diameter groove; 12. a second inner diameter groove; 13. a third inner diameter groove; 14. an inner sleeve; 15. a positioning tube; 16. a cutting sleeve; 17. a target gun gauge head; 18. a lower target gun head measuring rod; 19. the tooth tip positions the opening; 2. a fastening bolt; 21. a laser contact sensor; 22. and a mounting groove.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

The embodiment is that as shown in figures 1, 2, 3 and 4, the rotatable positioning device of the target gun measuring head for laser measurement comprises an outer sleeve 1, wherein an inner sleeve 14 is movably arranged in the outer sleeve 1, a positioning tube 15 is fixedly arranged at the lower end part of the inner sleeve 14, a clamping sleeve 16 is movably arranged in the outer sleeve 1 above the inner sleeve 14, a target gun measuring head 17 is movably arranged in the clamping sleeve 16, a lower target gun measuring head rod 18 is fixedly arranged at the lower end part of the target gun measuring head 17, the lower section of the lower target gun measuring head rod 18 is arranged in the positioning tube 15, a laser contact sensor 21 is fixedly arranged at the lower end part of the lower target gun measuring head rod 18, and three fastening bolts 2 are arranged on the circumferential surface of the outer sleeve 1 through threads.

The third internal diameter groove 13 has been seted up to the upper end of overcoat 1, the second internal diameter groove 12 has been seted up to the inner wall in third internal diameter groove 13, first internal diameter groove 11 has been run through to the bottom in second internal diameter groove 12, the registration arm 15 is installed in the inside of first internal diameter groove 11 that overcoat 1 was seted up, the endotheca 14 is installed in the inside of second internal diameter groove 12 that overcoat 1 was seted up, tooth point location opening 19 has been seted up to the lower tip of registration arm 15, the cutting ferrule 16 is installed in the inside of third internal diameter groove 13 that overcoat 1 was seted up, the mounting groove 22 has been run through to the upper end of cutting ferrule 16, target rifle gauge head 17 is installed in the inside of mounting groove 22 that cutting ferrule 16 was seted up, lower target rifle gauge head pole 18 is installed in the inside of registration arm 15.

Working principle:

in the first step, during installation, an inner sleeve 14 is installed inside an outer sleeve 1 in an axial mode, the inner sleeve 14 is installed inside a second inner diameter groove 12 formed in the outer sleeve 1, a positioning pipe 15 at the lower end portion of the inner sleeve 14 penetrates through a first inner diameter groove 11 formed in the outer sleeve 1, a clamping sleeve 16 is installed inside the outer sleeve 1, the clamping sleeve 16 is installed in a third inner diameter groove 13 formed in the outer sleeve 1, a target gun measuring head 17 is installed into an installation groove 22 formed in the clamping sleeve 16, a lower target gun measuring head rod 18 at the lower end portion of the target gun measuring head 17 is inserted below the installation groove 22, finally three fastening bolts 2 are installed into the side wall of the outer sleeve 1, the inner sleeve 14 and the clamping sleeve 16 can be fixed on the target gun measuring head 17, the inner sleeve 14 can freely rotate in the outer sleeve 1 in the axial mode, and the clamping sleeve 16 can prevent the target gun measuring head 17 from being damaged when the fastening bolts 2 are fastened and locked.

Secondly, three bolt holes are evenly distributed on the outer side wall of the outer sleeve 1, the fastening bolts 2 are matched with the clamping sleeve 16, the target gun measuring head 17 is fastened on the target gun, the tooth tip positioning opening 19 formed in the positioning tube 15 can easily position the laser contact sensor 21 at the tooth tip, a certain gap is reserved between the inner sleeve 14 and the clamping sleeve 16 and positioned on the tooth tip, the target gun direction can be rotated at will, the laser tracker can be easily aligned, a measuring data signal is transmitted, the device is used for the target gun measuring head rotatable positioning device for laser measurement, and the highest point of the target gun sphere measuring head can be easily placed at the highest point of the tooth tip when the large-diameter baffle plate choke plate and the blade top vapor seal are subjected to laser measurement in a dim environment after the cylinder body connecting screw is fastened, and the target gun can be easily aligned with the target gun to the laser tracker to transmit the measuring data signal. The measuring error is reduced, the size of the choke piece and the steam seal clearance are accurately adjusted, the whole cylinder reaches the standard, and the overhaul efficiency is improved.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a rotatable positioner of target rifle gauge head for laser measurement, includes overcoat (1), its characterized in that, the inside movable mounting of overcoat (1) has endotheca (14), the lower tip fixed mounting of endotheca (14) has registration tube (15), is located the inside movable mounting of overcoat (1) of endotheca (14) top has cutting ferrule (16), the inside movable mounting of cutting ferrule (16) has target rifle gauge head (17), the lower tip fixed mounting of target rifle gauge head (17) has lower target rifle gauge head pole (18), the lower segment of lower target rifle gauge head pole (18) is installed in registration tube (15) inside, the lower tip fixed mounting of lower target rifle gauge head pole (18) has laser contact sensor (21), the circumference surface of overcoat (1) is through screw thread installation three fastening bolt (2).

2. The rotatable positioning device for a target gun measuring head for laser measurement according to claim 1, wherein a third inner diameter groove (13) is formed in the upper end portion of the outer sleeve (1), a second inner diameter groove (12) is formed in the inner wall of the third inner diameter groove (13), and a first inner diameter groove (11) is formed in the bottom of the second inner diameter groove (12) in a penetrating mode.

3. The rotatable positioning device for a target gun measuring head for laser measurement according to claim 2, wherein the positioning tube (15) is installed inside a first inner diameter groove (11) formed in the outer sleeve (1), and the inner sleeve (14) is installed inside a second inner diameter groove (12) formed in the outer sleeve (1).

4. The rotatable positioning device of a target gun probe for laser measurement according to claim 1, wherein the lower end of the positioning tube (15) is provided with a tooth tip positioning opening (19).

5. The rotatable positioning device for a target gun measuring head for laser measurement according to claim 4, wherein the clamping sleeve (16) is installed inside a third inner diameter groove (13) formed in the outer sleeve (1), and an installation groove (22) is formed in the upper end portion of the clamping sleeve (16) in a penetrating manner.

6. The rotatable positioning device for a target gun probe for laser measurement according to claim 5, wherein the target gun probe (17) is mounted inside a mounting groove (22) formed in a clamping sleeve (16), and the lower target gun probe rod (18) is mounted inside a positioning tube (15).