Rotor jacking device of steam turbine generator unit
By designing a rotor lifting device of the steam turbine generator set including a jack and a lifting mechanism, the problem of delay in construction period caused by inability to perform other operations after lifting is solved, and a more stable and wider function lifting effect is achieved.
Patent Information
- Application Number
- CN202421494288.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-27
AI Technical Summary
After the rotor of the steam turbine generator set is lifted, other operations cannot be carried out due to high maintenance accuracy, tight construction period and complex processes, resulting in delays in construction period.
A rotor lifting device of the steam turbine generator set including a jack and a lifting mechanism is designed. The lifting mechanism consists of a support, a copper-plated roller, a fixing bolt slide and a bolt. It is contacted with the rotor through a copper-plated roller to achieve stable lifting, and is fixed by bolts, allowing the rotor to move and perform adjustment, grinding and other work.
Improves the stability and functional expansion of the device, allowing the lifted rotor to perform multiple tasks, and reduces construction period delays.
Smart Images
Figure CN222809169U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steam turbine generator sets, and in particular relates to a rotor jacking device for a steam turbine generator set. Background Art
[0002] At present, steam turbine generator sets use rotor jacking devices made by the unit manufacturer. During the unit overhaul, the device is used to jack up the rotor, so as to carry out work such as turning the tiles, disassembling or connecting the wheel bolts, grinding and repairing the rotor shaft diameter, etc. The overhaul accuracy of steam turbine generator sets is high, with an accuracy of 0.01mm, a short overhaul period, and a net overhaul period of about 28 days. The overhaul process and logic are complex, and the next step cannot be carried out without completing the previous step. When the rotor jacking work is required, other work cannot be carried out after the rotor is jacked up, causing delays in the construction period. Utility Model Content
[0003] The utility model aims to provide a turbine generator rotor jacking device to solve the problem of delay in construction period caused by inability to carry out other operations due to high maintenance precision, tight construction period and complex procedures after the turbine generator rotor is jacked up.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A rotor jacking device for a steam turbine generator set includes a jack and a jacking mechanism arranged above the jack, the jacking mechanism includes a support and a copper-plated roller symmetrically arranged in the support, the support is a box structure with an open top surface, the bottom plate of the support is fixedly connected to the jack, connecting holes are arranged in the front and rear end walls of the support, the two ends of the roller shaft of the copper-plated roller are respectively inserted into the connecting holes, a plurality of fixing bolt slide grooves are arranged on the side walls of the support, the fixing bolt slide grooves are arranged in one-to-one correspondence with the bolt holes on the vertical surface of the bearing seat, and a bolt connection is arranged between the fixing bolt slide grooves and the bolt holes on the vertical surface of the bearing seat.
[0006] In order to further realize the utility model, isosceles inverted trapezoidal notches are symmetrically arranged on the front and rear end walls of the support, the upper base length of the notch is greater than the outer diameter of the rotor, the waist of the notch is parallel to the tangent line at the intersection of the copper-plated roller and the rotor, and the waist of the notch is lower than the tangent line.
[0007] In order to further realize the utility model, reinforcing plates are arranged between the two ends of the upper bottom of the notch and the side walls of the support, and the reinforcing plates are parallel to the bottom plate.
[0008] In order to further realize the utility model, the jacks include at least two, and the two jacks are symmetrically arranged below the support.
[0009] Compared with the prior art, the utility model has the following beneficial effects:
[0010] The utility model is suitable for the jacking operation of the rotor of the steam turbine generator set. The designed copper-plated roller and the fixing bolt hole slide groove can effectively improve the stability of the device and expand the function of the jacking device.
[0011] After the utility model is installed in place and the jacking height is adjusted, bolts are used to connect and fix the utility model with the bolt holes on the vertical surface of the bearing bush seat, thereby improving the stability of the device after jacking up and allowing the rotor to rotate after jacking up, so as to meet the conditions for corresponding adjustment, grinding, measurement, bushing turning and the like. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model;
[0013] The meanings of the accompanying numbers are as follows: 1. Jack; 2. Support; 3. Copper-plated roller; 4. Connecting hole; 5. Fixing bolt slide; 6. Bolt; 7. Notch; 8. Rotor; 9. Reinforcement plate; 10. Base plate; 11. Roller. DETAILED DESCRIPTION
[0014] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0015] like Figure 1 As shown, a rotor jacking device for a steam turbine generator set includes a jack 1 and a jacking mechanism arranged above the jack 1, the jacking mechanism includes a support 2 and a copper-plated roller 3 symmetrically arranged in the support 2, the support 2 is a box structure with an open top surface, the jack 1 includes at least two, the two jacks 1 are symmetrically arranged below the support 2, the bottom plate 10 of the support 2 is fixedly connected to the jack 1, the front and rear end walls of the support 2 are provided with connecting holes 4, the two ends of the roller shaft 11 of the copper-plated roller 3 are respectively inserted into the connecting holes 4, and the front and rear ends of the support 2 are respectively provided with connecting holes 4. An isosceles inverted trapezoidal notch 7 is symmetrically arranged on the end wall, the upper base length of the notch 7 is greater than the axial diameter of the rotor 8, the waist of the notch 7 is parallel to the tangent line at the intersection of the copper-plated roller 3 and the rotor 8, and the waist of the notch 7 is lower than the tangent line. A reinforcing plate 9 is arranged between the two ends of the upper base of the notch 7 and the side wall of the support 2, and the reinforcing plate 9 is parallel to the bottom plate 10. A plurality of fixing bolt slots 5 are arranged on the side wall of the support 2, and the fixing bolt slots 5 are arranged one by one corresponding to the bolt holes on the vertical surface of the bearing seat, and bolts 6 are arranged between the fixing bolt slots 5 and the bolt holes on the vertical surface of the bearing seat to connect.
[0016] The jacking mechanism is jacked up by the jack 1, so that the copper-plated roller 3 is in contact with the rotor 8, and a dial indicator is set up. The rotor 8 is jacked up to the required height by the jack 1 as required. After the jacking height reaches the required height, the bolts 6 corresponding to the bolt holes on the vertical surface of the bearing seat are used to fix the fixing bolt slots 5 to the bearing seat. At this time, the jacking work is completed, and the rotor 8 is jacked up by the device of the utility model. While the rotor is jacked up, corresponding work such as turning, adjusting, grinding, measuring, and turning over of bearings can be performed.
Claims
1. A rotor jacking device for a steam turbine generator set, characterized in that: The invention comprises a jack (1) and a lifting mechanism arranged above the jack (1), wherein the lifting mechanism comprises a support (2) and a copper-plated roller (3) symmetrically arranged in the support (2), the support (2) being a box structure with an open top surface, the bottom plate (10) of the support (2) being fixedly connected to the jack (1), the front and rear end walls of the support (2) being provided with connecting holes (4), the two ends of the roller shaft (11) of the copper-plated roller (3) being respectively passed through the connecting holes (4), a plurality of fixing bolt slide grooves (5) being arranged on the side wall of the support (2), the fixing bolt slide grooves (5) being arranged one-to-one with the bolt holes on the vertical surface of the bearing seat, and bolts (6) being arranged between the fixing bolt slide grooves (5) and the bolt holes on the vertical surface of the bearing seat.
2. The rotor jacking device for a steam turbine generator set according to claim 1, characterized in that: Isosceles inverted trapezoidal notches (7) are symmetrically arranged on the front and rear end walls of the support (2); the length of the upper base of the notch (7) is greater than the outer diameter of the rotor (8); the waist of the notch (7) is parallel to the tangent line at the intersection of the copper-plated roller (3) and the rotor (8); and the waist of the notch (7) is lower than the tangent line.
3. The rotor jacking device for a steam turbine generator set according to claim 2, characterized in that: A reinforcing plate (9) is provided between the two ends of the upper bottom of the notch (7) and the side wall of the support (2), and the reinforcing plate (9) is parallel to the bottom plate (10).
4. The rotor jacking device for a steam turbine generator set according to claim 3, characterized in that: The jacks (1) include at least two jacks, and the two jacks (1) are symmetrically arranged below the support (2).