Auxiliary device for installing balance weight of steam turbine rotor

Abstract

A steam turbine rotor counterweight installation auxiliary device. The current counterweight installation tool is usually a long rod connected with the counterweight. Since the counterweight needs to be inserted into the insertion hole during installation, the accurate insertion position cannot be found due to the darkness in the insertion hole. The utility model discloses a sleeve, the outer sleeve end is fixed with the connecting plate, the connecting plate is fixed with the screw rod, the outer sleeve is slidably connected with the inlaying puller, the outer sleeve outer wall is fixed with the lamp cylinder, and the lamp cylinder is fixed with the illuminating lamp. The first reflector, the second reflector, the third reflector and the fourth reflector are fixed in the outer sleeve, the first reflector is arranged in parallel with the second reflector, and the third reflector is arranged in parallel with the fourth reflector. The utility model is used for steam turbine rotor counterweight installation.

Description

Technical Field

[0001] This utility model relates to an auxiliary device for installing counterweight blocks on a steam turbine rotor. Background Technology

[0002] During the operation of power plant units, excessive vibration can occur due to high-speed dynamic imbalance of the turbine rotor and wear of the bearings. Adjusting the counterweights through dynamic balancing tests is a common and effective method to eliminate this vibration. After the unit is shut down, counterweights are added to the designated balance screw holes on the turbine rotor. The counterweights are typically screws that mate with the balance screw holes. Since the installation of counterweights is usually done immediately after shutdown, the work is often inconvenient due to high temperatures and limited space. Currently, the tool used for installing counterweights is usually a long rod connected to the counterweight. Because the counterweight needs to be inserted into the insertion hole and the screw hole needs to be accurately located, the insertion position is often difficult to find due to the darkness inside the insertion hole. Summary of the Invention

[0003] The purpose of this utility model is to solve the above-mentioned technical problems and provide an auxiliary device for installing the counterweight block of a steam turbine rotor.

[0004] The above objectives are achieved through the following technical solutions:

[0005] An auxiliary device for installing counterweights on a steam turbine rotor comprises: an outer sleeve, a connecting plate fixed to the end of the outer sleeve, a screw fixed to the connecting plate, a puller slidably connected inside the outer sleeve, a lamp tube fixed to the outer wall of the outer sleeve, and a lighting lamp fixed inside the lamp tube.

[0006] The outer sleeve contains a first reflector, a second reflector, a third reflector, and a fourth reflector. The first reflector is arranged in parallel with the second reflector, and the third reflector is arranged in parallel with the fourth reflector.

[0007] The turbine rotor counterweight installation auxiliary device includes two tie rods, which are fixed together by a crossbar, and each tie rod has a plate fixed to its end.

[0008] The turbine rotor counterweight installation auxiliary device has two hand grips fixed to the outside of the outer sleeve.

[0009] The beneficial effects of this utility model are:

[0010] 1. By setting up a lighting lamp and four reflectors, this utility model can illuminate the position of the screw plug hole when the counterweight is inserted. The continuous reflection of the four reflectors makes it easy for people to see the insertion position, ensuring the accuracy of the insertion position. Attached Figure Description

[0011] Appendix Figure 1 This is the front view of this utility model;

[0012] Appendix Figure 2 This is the right view of this utility model;

[0013] Appendix Figure 3 It is attached Figure 1 Sectional view of section AA;

[0014] Appendix Figure 4 It is attached Figure 1 BB section sectional view;

[0015] Appendix Figure 5 It is attached Figure 1 A cross-sectional view of the CC section;

[0016] Appendix Figure 6 It is attached Figure 2 DD section view;

[0017] Appendix Figure 7 It is attached Figure 5 Enlarged view of part E;

[0018] Appendix Figure 8 This is a schematic diagram of the counterweight structure;

[0019] Appendix Figure 9 This is a schematic diagram of the structure of this utility model and the counterweight block being fixed.

[0020] Appendix Figure 10 This is a schematic diagram of the structure of this utility model in use;

[0021] In the diagram: 1. Screw; 2. Lighting lamp; 3. Outer sleeve; 4. Locking bolt; 6. Hand grip; 7. Pull-in device; 8. First reflector; 9. Second reflector; 10. Third reflector; 11. Fourth reflector; 12. Pull rod; 13. Guide sleeve; 15. Connecting plate; 16. Panel; 17. Lamp tube; 18. Positioning groove; 19. Threaded hole; 20. Counterweight; 21. Insertion hole; 22. Plug hole. Detailed Implementation

[0022] Reference Figures 1-7An auxiliary device for installing a turbine rotor counterweight includes: an outer sleeve 3, a connecting plate 15 fixed to the end of the outer sleeve, a screw 1 fixed to the connecting plate, a puller 7 slidably connected inside the outer sleeve, a lamp tube 17 fixed to the outer wall of the outer sleeve, the lamp tube being a cylindrical structure, a lighting lamp 2 fixed inside the lamp tube, the lighting lamp being inserted into the lamp tube and fixed thereto, the lighting lamp being a commonly used cylindrical high-intensity flashlight, which is placed inside the lamp tube and fixed by a locking bolt 4. The locking bolt only presses against the surface of the flashlight to fix its position, and does not need to be inserted into the flashlight.

[0023] The outer sleeve contains a first reflector 8, a second reflector 9, a third reflector 10, and a fourth reflector 11. The first reflector is arranged in parallel with the second reflector, and the third reflector is arranged in parallel with the fourth reflector. All four reflectors are plane reflectors.

[0024] The aforementioned puller includes two pull rods 12, which are fixed together by a crossbar 14. Each pull rod has a plate 16 fixed at its end. The plate is located in the rectangular hole of the connecting plate and cooperates with the positioning groove of the counterweight.

[0025] Two guide sleeves 13 are fixed inside the outer sleeve. Each guide sleeve has a through hole. The pull rod passes through the through hole of the guide sleeve. The guide sleeves can ensure the pulling limit of the pull rod.

[0026] The outer sleeve has two hand grips 6 fixed to its exterior.

[0027] Working principle: When using it, refer to... Figures 8-10 First, connect the device to the counterweight by threading the screw into the threaded hole of the counterweight. Stop when the mounting plate and the positioning groove of the counterweight are aligned. Then, hold the horizontal bar and push the inserter forward. After pushing, the mounting plate will be inserted into the positioning groove 18 of the counterweight. This completes the installation of the counterweight and the device. Next, turn on the flashlight switch and, holding the handle, insert the device face down through the insertion hole 21. The flashlight will provide illumination during insertion. Four reflectors are also provided; through continuous reflection, the counterweight and the… The position of the screw plug hole 22 is reflected to the human eye, allowing a clear view of the counterweight's location. This facilitates the insertion of the counterweight. After the counterweight is inserted into the screw plug hole, which is also a self-threaded hole, hold the crossbar and rotate the puller. This will cause the counterweight to rotate as well, allowing the counterweight to be threaded into the screw plug hole. After the connection is complete, pull the puller upwards to disengage its insert plate from the counterweight's positioning groove. Then, rotate the outer sleeve in the opposite direction to detach the device from the counterweight.

Claims

1. An auxiliary device for installing counterweight blocks on a steam turbine rotor, characterized in that: Its components include: an outer sleeve, a connecting plate fixed to the end of the outer sleeve, a screw fixed to the connecting plate, a puller slidably connected inside the outer sleeve, a lamp tube fixed to the outer wall of the outer sleeve, and a lighting lamp fixed inside the lamp tube; The outer sleeve contains a first reflector, a second reflector, a third reflector, and a fourth reflector. The first reflector is arranged in parallel with the second reflector, and the third reflector is arranged in parallel with the fourth reflector.

2. The turbine rotor counterweight installation auxiliary device according to claim 1, characterized in that: The puller includes two pull rods, which are fixed together by a crossbar, and each pull rod has a plate fixed to its end.

3. The turbine rotor counterweight installation auxiliary device according to claim 2, characterized in that: The outer sleeve has two hand grips fixed to its exterior.

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