Vertical centering device for centering gas turbine cylinder
The design of the vertical centering device solves the problems of cylinder wall deformation and accuracy when centering the gas turbine cylinder in a horizontal state, realizing high-precision and convenient vertical centering operation and improving the accuracy of gas turbine assembly.
Patent Information
- Application Number
- CN202520490545.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-20
AI Technical Summary
When aligning the turbine cylinder and exhaust cylinder of a gas turbine in a horizontal position, there are problems such as cylinder wall deformation, difficulty in center adjustment, and difficulty in ensuring accuracy. In addition, the lack of a dedicated vertical centering device leads to poor convenience.
A vertical centering device is adopted, with cylinders arranged vertically. The measuring component of the vertical centering device corresponds to the part of the cylinder to be measured in the height direction. The measuring component is driven by the rotation of the central shaft to measure and adjust the position of the cylinder. Combined with a circumferentially rotatable base and multiple bearing structures, rotational stability and accuracy are ensured.
It improves the accuracy and convenience of centering, simplifies the operation process, enhances rotational stability and measurement accuracy, and ensures the accuracy of assembly.
Smart Images
Figure CN223910200U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of gas turbine assembly, specifically, a vertical centering device for gas turbine cylinder centering. BACKGROUND
[0002] The turbine cylinder and the exhaust cylinder of the gas turbine are assembled by the way of axial partial nesting, and centering needs to be strictly carried out during the assembly process, and the traditional centering is carried out in a horizontal state, and since the turbine cylinder and the exhaust cylinder usually adopt a single-layer cylinder structure and the cylinder wall is thin, deformation is prone to occur during the centering process, and the center of the turbine cylinder and the exhaust cylinder is not easy to adjust in the horizontal state, and errors are prone to occur during the adjustment process.
[0003] In order to solve the technical problems existing in the centering in the horizontal state, the industry selects the vertical centering method, however, this method lacks a special centering device, needs to rely on the subjective experience of the operator for judgment, and the convenience is poor, and the centering accuracy is difficult to guarantee, thereby affecting the assembly accuracy. UTILITY MODEL CONTENTS
[0004] The technical purpose of the utility model is to provide a vertical centering device for gas turbine cylinder centering, which can effectively guarantee the centering accuracy and has high convenience.
[0005] The technical scheme adopted by the utility model is as follows:
[0006] A vertical centering device for gas turbine cylinder centering has a base, a central shaft and a measuring assembly, the central shaft is vertically assembled on the base and can rotate in the circumferential direction of the base, and the measuring assembly is assembled on the central shaft and extends in the radial direction of the central shaft.
[0007] When the cylinder is centered, the cylinder is arranged vertically, the vertical centering device is arranged in the space surrounded by the inner hole of the cylinder, and the measuring assembly of the vertical centering device corresponds to the to-be-measured part of the cylinder in the height direction.
[0008] The above technical measures arrange the cylinder vertically, arrange the vertical centering device in the space surrounded by the inner hole of the cylinder, and make the measuring assembly of the vertical centering device correspond to the to-be-measured part of the cylinder in the height direction, measure by rotating the central shaft to drive the measuring assembly, adjust the position of the cylinder according to the data measured by the measuring assembly, and thus complete the centering.
[0009] The vertical centering device in the above technical measures has simple structure, simple operation and high convenience, the measuring assembly corresponds to the to-be-measured part of the cylinder in the height direction, and the centering accuracy can be effectively guaranteed.
[0010] Further, the base is a circumferential rotation structure, having a bottom plate, a shaft sleeve and a rotation shaft;
[0011] The bottom plate and the shaft sleeve are fixedly connected together to form an inverted T-shaped structure.
[0012] The rotation shaft is assembled in the space surrounded by the shaft sleeve through a plurality of bearings, and the upper end of the rotation shaft extends axially out of the shaft sleeve.
[0013] The base is fixedly connected with the central shaft through the upper end of the rotation shaft.
[0014] In the above technical measures, the bottom plate and the shaft sleeve are fixedly connected together to form an inverted T-shaped structure, which is beneficial to ensure the stability during rotation. The rotation shaft is assembled in the space surrounded by the shaft sleeve through a plurality of bearings, which effectively ensures the stability and accuracy of the rotation shaft during rotation. At the same time, the plurality of bearings can share the load, reducing the stress on a single bearing, thereby reducing the wear of the bearing and prolonging the service life.
[0015] Further, a hole for assembling the lower end of the rotation shaft is formed in the bottom plate of the base.
[0016] The rotation shaft is rotatably assembled with the upper end of the shaft sleeve through a deep groove ball bearing.
[0017] The rotation shaft is rotatably assembled with the bottom plate through a tapered roller bearing.
[0018] In the above technical measures, the rotation shaft is rotatably assembled with the upper end of the shaft sleeve through a deep groove ball bearing, which can bear radial load. The rotation shaft is rotatably assembled with the bottom plate through a tapered roller bearing, which can bear radial load and axial load. Through the deep groove ball bearing and the tapered roller bearing, the carrying capacity is enhanced, and the stability and accuracy of the rotation shaft during rotation are ensured.
[0019] Further, the upper end of the rotation shaft is detachably connected with the central shaft.
[0020] A plurality of reserved screw holes for bolts are formed in the upper end of the rotation shaft.
[0021] In the above technical measures, the upper end of the rotation shaft is detachably connected with the central shaft, and the connection is achieved through bolts, which effectively ensures the reliability of the connection between the rotation shaft and the central shaft, and facilitates disassembly and assembly, thereby improving convenience.
[0022] Further, a plurality of radial extension moving handles are arranged on the rotation shaft and / or the shaft sleeve of the base along the circumference.
[0023] The above technical measures provide moving handles, which facilitate the movement of the base by the operator and can be moved to a specified position as needed.
[0024] Further, a plurality of screw holes are arranged on the center shaft at axial intervals and serve to connect corresponding position measuring assemblies.
[0025] The above technical measures can meet the measurement requirements of different height measuring parts, can realize all-around measurement of the cylinder, and are beneficial to improving the measurement accuracy.
[0026] Further, the center shaft is composed of multiple sections in the axial direction.
[0027] In the above technical measures, the center shaft is composed of multiple sections in the axial direction, can be adjusted according to the size of the cylinder, meets different measurement requirements, and effectively improves the convenience.
[0028] Further, the measuring assembly has a support rod and a dial gauge.
[0029] The support rod is used for fixed connection on the center shaft.
[0030] The dial gauge is connected to the end of the support rod away from the center shaft.
[0031] In the above technical measures, the measuring assembly has a simple structure, the dial gauge is connected to the end of the support rod away from the center shaft, operation is facilitated, and the measurement accuracy is high.
[0032] Further, the support rod is composed of multiple sections.
[0033] The adjacent two sections of the support rod are assembled in a staggered manner through a clamp, and each threaded hole of the clamp is locked by a disc-type bolt.
[0034] In the above technical measures, the support rod is composed of multiple sections, can be adjusted according to the size of the cylinder and the corresponding position of the support rod arrangement, meets different measurement requirements, and effectively improves the convenience; the adjacent two sections of the support rod are assembled in a staggered manner through a clamp, which can improve the stability, and each threaded hole of the clamp is locked by a disc-type bolt, which ensures the stability of the connection.
[0035] Further, the support rod is connected to the corresponding screw hole on the center shaft in a threaded structure.
[0036] In the above technical measures, the support rod is connected to the corresponding screw hole on the center shaft in a threaded structure, so that the connection between the support rod and the screw hole is stable and reliable, and at the same time, the support rod is convenient to disassemble and assemble, and the convenience is effectively improved.
[0037] The one or more technical solutions of the utility model have at least the following technical effects or advantages:
[0038] The utility model discloses a vertical type centering device which is arranged in the space surrounded by the inner hole of the cylinder and corresponds to the to-be-measured part of the cylinder in the height direction.
[0039] The vertical type centering device has simple structure, simple operation and high convenience, and the measuring assembly corresponds to the to-be-measured part of the cylinder in the height direction, so that the centering accuracy can be effectively ensured. BRIEF DESCRIPTION OF DRAWINGS
[0040] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and do not limit the present application.
[0041] Figure 1 is the use state schematic diagram of the utility model;
[0042] Figure 2 is the structure schematic diagram of the base of the utility model;
[0043] Figure 3 is the sectional view of the base of the utility model;
[0044] Figure 4 is the structure schematic diagram of the center axis and the rotation shaft connection of the utility model;
[0045] Figure 5 is the sectional view of the center axis of the utility model;
[0046] Figure 6 is the structure schematic diagram of the measuring assembly and the center axis connection of the utility model;
[0047] Wherein, 1-base;11-bottom plate;12-shaft sleeve;13-rotation shaft;14-deep groove ball bearing;15-tapered roller bearing;16-movable handle;2-center axis;3-measuring assembly;31-supporting rod;32-clamp;4-front cylinder;5-rear cylinder. DETAILED DESCRIPTION
[0048] In order to make the above-mentioned purpose, features and advantages of the present application more comprehensible, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0049] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be practiced according to other embodiments that are not specifically described herein, and the present application is not limited to the specific embodiments described herein.
[0050] Embodiment 1
[0051] With reference to Figures 1-6 The embodiment provides a vertical centering device for centering a gas turbine cylinder, the vertical centering device has a base 1, a central shaft 2 and a measuring assembly 3, the central shaft 2 is vertically assembled on the base 1 and can rotate in the circumferential direction of the base 1, and the measuring assembly 3 is assembled on the central shaft 2 and extends in the radial direction of the central shaft 2.
[0052] When the cylinder is centered, the cylinder is arranged in a vertical position, the vertical centering device is arranged in the space surrounded by the inner hole of the cylinder, and the measuring assembly 3 of the vertical centering device corresponds to the to-be-measured part of the cylinder in the height direction.
[0053] The base 1 is a circumferentially rotatable structure and has a bottom plate 11, a shaft sleeve 12 and a rotating shaft 13.
[0054] The bottom plate 11 and the shaft sleeve 12 are fixedly connected together and form an inverted T-shaped structure.
[0055] The bottom plate 11 and the shaft sleeve 12 are connected together through bolts.
[0056] The rotating shaft 13 is assembled in the space surrounded by the shaft sleeve 12 through a plurality of bearings, and the upper end of the rotating shaft 13 extends out of the shaft sleeve 12 in the axial direction.
[0057] The base 1 is fixedly connected with the central shaft 2 through the upper end of the rotating shaft 13.
[0058] The upper end of the rotating shaft 13 is connected with the central shaft 2 in a detachable manner.
[0059] A plurality of reserved bolt holes for bolts are formed in the upper end of the rotating shaft 13.
[0060] A plurality of radially extending moving handles 16 are arranged on the rotating shaft 13 of the base 1 in the circumferential direction.
[0061] A hole for assembling the lower end of the rotating shaft 13 is formed in the bottom plate 11 of the base 1.
[0062] The rotating shaft 13 is rotatably assembled with the upper end of the shaft sleeve 12 through a deep groove ball bearing 14.
[0063] The rotating shaft 13 is rotatably assembled with the bottom plate 11 through a tapered roller bearing 15.
[0064] A plurality of screw holes for connecting corresponding position measuring assemblies 3 are arranged on the central shaft 2 at axial intervals.
[0065] The central shaft 2 is combined by a plurality of sections in the axial direction.
[0066] The number of sections of the central shaft 2 is not limited in the embodiment and can be determined according to actual requirements.
[0067] The measuring assembly 3 has a support rod 31 and a dial gauge.
[0068] The support rod 31 is used for fixed connection on the central shaft 2.
[0069] The dial gauge is connected to the end of the support rod 31 away from the central shaft 2.
[0070] The support rod 31 is combined by a plurality of sections.
[0071] The number of sections of the support rod 31 is not limited in the embodiment and can be determined according to actual requirements.
[0072] The adjacent two sections of the support rod 31 are assembled by clamps 32 in a staggered manner, and each threaded hole of the clamp 32 is locked by a disc-type bolt.
[0073] The support rod 31 is connected to the corresponding screw hole on the central shaft 2 in a threaded structure.
[0074] The vertical centering device in the embodiment is applied according to the following steps:
[0075] 1. Adjust and fix the base 1 to a specified position on the assembly site, and check that the rotating shaft 13 can rotate smoothly without any abnormality.
[0076] 2. Install a specified number of central shafts 2 according to the size of the front cylinder 4, install the central shaft 2 on the rotating shaft 13, and fix it by bolts.
[0077] 3. Arrange a plurality of pad boxes around the base 1, and vertically hang the front cylinder 4 on the pad boxes.
[0078] 4. According to the position height and diameter of the center measuring point section of the front cylinder 4, install the measuring assembly 3 at the corresponding screw hole position on the central shaft 2, so that the measuring assembly 3 corresponds to the center measuring surface of the front cylinder 4, and the measuring rod of the dial gauge of the measuring assembly 3 is pre-pressed 5mm to the center measuring surface of the front cylinder 4. Rotate the rotating shaft 13 to rotate the central shaft 2 for one revolution, and ensure that the dial gauge reading is consistent with the initial value, otherwise adjust the dial gauge.
[0079] 5. Slowly and uniformly rotate the rotating shaft 13, and record the data of the dial gauge at the circumferential 0°, 90°, 180°, and 270° positions.
[0080] 6. Adjust the position of the front cylinder 4 according to the data on the dial gauges until the data on the dial gauges at the four positions meet the requirements, so that the center of the front cylinder 4 and the vertical centering device meet the requirements;
[0081] 7. vertically lower the rear cylinder 5 to the vertical flange joint surface of the front cylinder 4, according to the position height and diameter of the section of the center measuring point of the rear cylinder 5, adjust the number of the center shaft 2 correspondingly, install the measuring assembly 3 on the center shaft 2 correspondingly to the center measuring surface of the rear cylinder 5, so that the measuring assembly 3 corresponds to the center measuring surface of the rear cylinder 5, and the measuring rod of the dial gauge of the measuring assembly 3 is pre-pressed 5mm to the center measuring surface of the rear cylinder 5, rotate the rotating shaft 13 to rotate the center shaft 2 for one circle, and ensure that the dial gauge reading is consistent with the initial value, otherwise adjust the dial gauge;
[0082] 8. rotate the rotating shaft 13 at a slow and uniform speed, and record the data of the two dial gauges at the four positions of 0°, 90°, 180° and 270°;
[0083] 9. compare and analyze the data on the two dial gauges, and adjust the position of the rear cylinder 5 until the data on the two dial gauges at the four positions meet the requirements, so that the center of the front cylinder 4 and the rear cylinder 5 meet the requirements.
[0084] Embodiment 2
[0085] The other contents of this embodiment are the same as those of Embodiment 1, and the difference lies in that:
[0086] A plurality of radially extending moving handles are arranged on the shaft sleeve of the base in a circumferential direction.
[0087] Embodiment 3
[0088] The other contents of this embodiment are the same as those of Embodiment 1, and the difference lies in that:
[0089] A plurality of radially extending moving handles are arranged on the rotating shaft and the shaft sleeve of the base in a circumferential direction.
[0090] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the present application and the preferred embodiments.
[0091] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.
Claims
1. A vertical centering device for centering a gas turbine cylinder, characterized in that: the vertical centering device comprises a base (1), a central shaft (2) and a measuring assembly (3), the central shaft (2) is vertically arranged on the base (1) and can rotate in the circumferential direction of the base (1), and the measuring assembly (3) is arranged on the central shaft (2) and extends in the radial direction of the central shaft (2); when centering the cylinder, the cylinder is arranged vertically, the vertical centering device is arranged in the space surrounded by the inner hole of the cylinder, and the measuring assembly (3) of the vertical centering device corresponds to the part to be measured of the cylinder in the height direction.
2. The vertical centering device for centering a gas turbine cylinder according to claim 1, characterized in that: the base (1) is a circumferentially rotatable structure comprising a base plate (11), a shaft sleeve (12) and a rotating shaft (13); the base plate (11) and the shaft sleeve (12) are fixedly connected together to form an inverted T-shaped structure; the rotating shaft (13) is arranged in the space surrounded by the shaft sleeve (12) through a plurality of bearings, and the upper end of the rotating shaft (13) extends out of the shaft sleeve (12) in the axial direction; and the base (1) is fixedly connected with the central shaft (2) through the upper end of the rotating shaft (13).
3. The vertical centering device for centering a gas turbine cylinder according to claim 2, characterized in that: a hole for arranging the lower end of the rotating shaft (13) is formed in the base plate (11) of the base (1); the rotating shaft (13) is rotatably arranged with the upper end of the shaft sleeve (12) through a deep groove ball bearing (14); and the rotating shaft (13) is rotatably arranged with the base plate (11) through a tapered roller bearing (15).
4. The vertical centering device for centering a gas turbine cylinder according to claim 2 or 3, characterized in that: the upper end of the rotating shaft (13) is connected with the central shaft (2) in a detachable manner; and a plurality of reserved screw holes for passing through bolts are formed in the upper end of the rotating shaft (13).
5. The vertical centering device for centering a gas turbine cylinder according to claim 2 or 3, characterized in that: a plurality of radially extending moving handles (16) are arranged on the rotating shaft (13) and / or the shaft sleeve (12) of the base (1) in the circumferential direction.
6. The vertical centering device for centering a gas turbine cylinder according to claim 1, characterized in that: a plurality of screw holes for connecting corresponding position measuring assemblies (3) are arranged on the central shaft (2) in the axial direction.
7. The vertical centering device for centering a gas turbine cylinder according to claim 1 or 6, characterized in that: the central shaft (2) is composed of a plurality of sections in the axial direction.
8. The vertical centering device for centering a gas turbine cylinder according to claim 1, characterized in that: the measuring assembly (3) comprises a support rod (31) and a dial indicator; the support rod (31) is used for fixedly connecting with the central shaft (2); and the dial indicator is connected to the end of the support rod (31) away from the central shaft (2). 9. The vertical centering device for centering the gas turbine cylinder according to claim 8, characterized in that: the support rod (31) is combined by multiple sections; the adjacent two sections of the support rod (31) are assembled in staggered position by the clamp (32), and each threaded hole of the clamp (32) is locked by a disc-type bolt.
10. The vertical centering device for centering the gas turbine cylinder according to claim 8 or 9, characterized in that: the support rod (31) is connected in the corresponding threaded hole on the central shaft (2) in a threaded structure.