Deformation monitoring device for hoisting hydro-generator rotor bolt

Abstract

The utility model provides a bolt deformation monitoring device for hoisting a hydro-generator rotor, which comprises a plurality of digital dial indicators (4), a data transmission mechanism (5) and a data receiving alarm mechanism, and each digital dial indicator (4) is fixed on the side of a rotor sling; each digital dial indicator (4) is in signal connection with a data transmission mechanism (5); and the data transmission mechanism (5) transmits data to an external data receiving alarm mechanism. The device can monitor the deformation of the connecting bolt of the lifting appliance and the rotor in real time, has an alarm function when the deformation is increased, and has the advantages of safety, reliability, simple structure and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of deformation measurement, in particular to a deformation monitoring device for hoisting a hydro-generator rotor bolt. Background Art

[0002] A hydropower station's turbine generator set is a massive mechanical assembly, and the turbine rotor is the heaviest component. During turbine generator maintenance, the rotor must be hoisted from the generator pit to the rotor maintenance station. The rotor can only be hoisted after securely connecting it to the rotor using a dedicated rotor hoisting tool on a crane (bridge crane). This dedicated rotor hoisting tool securely connects the rotor to the rotor using rotor bolts. During the hoisting process, the rotor bolts can deform due to factors such as gravity, stress, and metal fatigue. Before fatigue failure occurs, the connecting bolts don't exhibit noticeable macroscopic plastic deformation, making it difficult to detect with the naked eye. This failure is difficult to predict and poses a significant safety hazard. During rotor hoisting, the bolts, as crucial fasteners connecting the hoisting fixture to the rotor, are crucial for the safety of the entire process. Deformed bolts can compromise the tightness of the rotor-to-hoisting connection and may even break, potentially causing an accident. During the hoisting process, personnel cannot observe the deformation status of the bolts. In order to ensure the safety and reliability of the rotor bolts during the hoisting process, an efficient and accurate monitoring device for the deformation of the hoisted hydro-generator rotor bolts is developed, which is of great significance for ensuring the safety of the unit maintenance and hoisting process. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a device for monitoring the deformation of the bolts of the hoisting turbine generator rotor, which is specifically achieved through the following technical solutions:

[0004] A device for monitoring deformation of rotor bolts of a hoisting hydro-generator, comprising a plurality of digital dial gauges, a data transmission mechanism and a data receiving alarm mechanism, wherein:

[0005] Each of the digital dial indicators is fixed to the side of the rotor hanger;

[0006] Each of the digital micrometers is connected to a data transmission mechanism for signal transmission;

[0007] The data transmission mechanism transmits the data to an external data receiving alarm mechanism.

[0008] Optionally or preferably, each of the digital dial indicators is fixed to the rotor hanger flange via a magnetic connection.

[0009] Optionally or preferably, the number of the digital micrometers is 8; the digital micrometers are arranged on the edge of the rotor hanger flange.

[0010] Optionally or preferably, the data transmission mechanism transmits data to the data receiving alarm mechanism via WiFi or 5G signals.

[0011] Optionally or preferably, it further includes a power supply mechanism; the power supply mechanism is fixed on the rotor hanger flange, and the power supply mechanism is used to supply power to the digital micrometer and the data transmission mechanism.

[0012] Based on the above technical solution, the following technical effects can be produced:

[0013] The utility model provides a device for monitoring the deformation of bolts for hoisting a hydro-generator rotor. The device can monitor the deformation of the connecting bolts between the hoist and the rotor in real time by measuring the gap between the rotor hoist flange and the generator rotor connecting flange during the generator rotor hoisting process. The device has an alarm function when the deformation increases. The device has the advantages of safety, reliability, and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Description of the accompanying drawings:

[0017] 1-Connecting bolts, 2-Rotor hanger flange, 3-Generator rotor connecting flange, 4-Digital micrometer, 5-Data transmission mechanism, 6-Power supply mechanism. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0019] In a preferred embodiment:

[0020] like Figure 1 As shown:

[0021] This embodiment provides a device for monitoring deformation of rotor bolts of a hoisting hydro-generator, comprising a plurality of digital dial gauges 4, a data transmission mechanism 5, and a data receiving alarm mechanism, wherein:

[0022] Each of the digital dial gauges 4 is fixed to the side of the rotor hanger;

[0023] Each of the digital micrometers 4 is connected to the data transmission mechanism 5 for signal transmission;

[0024] The data transmission mechanism 5 transmits the data to an external data receiving alarm mechanism.

[0025] Furthermore, in this embodiment, each of the digital dial gauges 4 is fixed to the rotor hanger flange 2 via a magnetic connection.

[0026] Furthermore, in this embodiment, the number of the digital dial gauges 4 is 8; the digital dial gauges 4 are arranged on the edge of the rotor hanger flange 2 .

[0027] Furthermore, in this embodiment, the data transmission mechanism 5 transmits data to the data receiving alarm mechanism 0 via WiFi or 5G signals.

[0028] Furthermore, in this embodiment, a power supply mechanism 6 is further included; the power supply mechanism 6 is fixed on the rotor hanger flange, and the power supply mechanism 6 is used to supply power to the digital micrometer 4 and the data transmission mechanism 5 .

[0029] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A device for monitoring deformation of bolts used in hoisting a hydro-generator rotor, characterized in that: include: A plurality of digital micrometers (4), a data transmission mechanism (5) and a data receiving alarm mechanism, wherein: Each of the digital dial gauges (4) is fixed on the side of the rotor hanger; Each of the digital micrometers (4) is connected to a data transmission mechanism (5) for signal transmission; The data transmission mechanism (5) transmits the data to an external data receiving alarm mechanism.

2. The device for monitoring deformation of bolts used for hoisting a hydro-generator rotor according to claim 1, characterized in that: Each of the digital micrometers (4) is fixed on the rotor hanger flange through a magnetic connection.

3. The device for monitoring deformation of bolts used for hoisting a hydro-generator rotor according to claim 1, characterized in that: The number of the digital dial gauges (4) is 8; the digital dial gauges (4) are arranged on the edge of the rotor hanger flange.

4. The device for monitoring deformation of bolts used for hoisting a hydro-generator rotor according to claim 1, characterized in that: The data transmission mechanism (5) transmits the data to the data receiving alarm mechanism via WiFi or 5G signals.

5. The device for monitoring deformation of bolts used for hoisting a hydro-generator rotor according to claim 1, characterized in that: It also includes a power supply mechanism (6); the power supply mechanism (6) is fixed on the rotor hanger flange, and the power supply mechanism (6) is used to supply power to the digital micrometer (4) and the data transmission mechanism (5).

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