CN210625841U - Online measurement high and medium pressure rotor gap bridge steam seal vibration device - Google Patents
Online measurement high and medium pressure rotor gap bridge steam seal vibration device Download PDFInfo
- Publication number
- CN210625841U CN210625841U CN201921231768.4U CN201921231768U CN210625841U CN 210625841 U CN210625841 U CN 210625841U CN 201921231768 U CN201921231768 U CN 201921231768U CN 210625841 U CN210625841 U CN 210625841U
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- medium pressure
- gap bridge
- pressure rotor
- steam turbine
- steam
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model relates to an online measurement high and medium pressure rotor gap bridge steam seal vibration device, which comprises an eddy current sensor, a fixed bracket and a preamplifier; the eddy current sensor is arranged at the gap bridge steam seal of the high and medium pressure rotor of the unit through the fixed support, is connected with the steam turbine monitoring system through the preamplifier, and is used for acquiring vibration data of the gap bridge steam seal of the high and medium pressure rotor of the unit in real time and transmitting the acquired vibration data to the steam turbine monitoring system for real-time monitoring. The utility model discloses can the actual vibration condition of on-line measurement steam turbine high and medium pressure rotor gap bridge vapor seal department, for measuring and evaluating the guarantee on the actual vibration condition of steam turbine rotor provides equipment, ensure the operation of steam turbine safety and stability.
Description
Technical Field
The utility model belongs to the technical field of thermal power generation, especially, relate to an online measurement high and medium voltage rotor gap bridge gland sealing vibrating device.
Background
In recent years, the rapid soaring of Chinese economy leads to the continuous expansion and development of electric power industry, and with the increasing number of power generation enterprises, how to ensure the safe and stable operation of the unit becomes a problem for many electric power practitioners, the potential problems can be found in advance according to the quality of the vibration condition of the steam turbine, so that the recognition and attention degree of the vibration of the steam turbine is improved, for high and medium pressure rotors of steam turbines, the existing equipment generally measures the vibration of bearings at two ends of the rotor, but under the condition of first-order critical rotating speed of the turbine rotor, the maximum vibration position is at the gap bridge steam seal position of the high-medium pressure rotor of the turbine, the prior means can not realize the actual measurement requirement, and simultaneously, when the turbine rotor has first-order critical mass unbalance, the gap bridge steam seal position of the high-medium pressure rotor is the best position for implementing high-speed dynamic balance of the rotor, therefore, it is necessary to arrange a rotating shaft vibration measuring device at the gap bridge steam seal of the high and medium pressure rotor of the steam turbine.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an online measurement high and medium pressure rotor gap bridge gland sealing vibrating device realizes the actual vibration condition of online measurement steam turbine high and medium pressure rotor gap bridge gland sealing department, provides the guarantee on the equipment for measuring and evaluating the actual vibration condition of steam turbine rotor.
The utility model provides a high and medium pressure rotor gap bridge steam seal vibration device for online measurement, which comprises an eddy current sensor, a fixed bracket and a preamplifier; the eddy current sensor is installed at the gap bridge steam seal position of the high and medium pressure rotor of the unit through a fixed support, is connected with the steam turbine monitoring system through a preamplifier, and is used for acquiring vibration data of the gap bridge steam seal position of the high and medium pressure rotor of the unit in real time and transmitting the acquired vibration data to the steam turbine monitoring system for real-time monitoring.
Furthermore, a fixed support is fixedly connected with the outer cylinder of the steam turbine, and the eddy current sensor is fixedly connected with the fixed support through a bolt.
By means of the scheme, the actual vibration condition of the gap bridge steam seal of the high and medium pressure rotor of the steam turbine can be measured on line through the online measurement high and medium pressure rotor gap bridge steam seal vibration device, the guarantee on equipment is provided for measuring and evaluating the actual vibration condition of the steam turbine rotor, and the safe and stable operation of the steam turbine is ensured.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is the utility model discloses online measurement high and medium pressure rotor gap bridge gland sealing vibrating device's schematic structure diagram.
Reference numbers in the figures:
1-a high pressure cylinder; 2-intermediate pressure cylinder; 3-measuring vibration points of the gap bridge gland sealing rotating shaft; 4-a preamplifier; 5-a turbine monitoring system.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1, the embodiment provides a high and medium pressure rotor gap bridge steam seal vibration device for online measurement, which includes an eddy current sensor (a rotating shaft vibration measurement sensor), a fixed bracket, and a preamplifier 4 (for signal amplification); the eddy current sensor is arranged at a gap bridge steam seal position (gap bridge steam seal rotating shaft vibration measuring point 3) of the high and medium pressure rotor of the unit through a fixed support, is connected with a steam turbine monitoring system 5 through a preamplifier 4, is used for acquiring vibration data of the gap bridge steam seal position of the high and medium pressure rotor of the unit in real time and transmitting the acquired vibration data to a TSI (transient state instrumentation)
(Turbine Supervisory Instruments, TSI, Turbine monitoring System) were monitored in real time. The vibration level of the high-medium pressure rotor of the steam turbine can be measured on line, meanwhile, the assistance is provided for the maximum vibration data of the steam turbine rotor to be measured accurately, the bending degree of the rotor can be measured under the turning state of the steam turbine rotor, and data support is provided for operation and maintenance of the steam turbine.
In this embodiment, the fixed bracket is fixedly connected with the outer cylinder of the steam turbine, and the eddy current sensor is fixedly connected with the fixed bracket through a bolt.
This online measurement high and medium pressure rotor gap bridge gland sealing vibrating device has following technological effect:
1) the vibration data of the gap bridge steam seal of the high and medium pressure rotor of the unit can be monitored in real time, before the unit is started, the bending degree of the high and medium pressure rotor can be measured through the device, data support is provided for the starting data of the unit, meanwhile, after the unit is stopped and overhauled, the data are measured in a turning state, and data support and data comparison can be provided for whether the bending degree of the high and medium pressure rotor needs to be maintained or not;
2) the measuring device can realize on-line measurement of the vibration level of the high-medium pressure rotor of the steam turbine, provides assistance for accurate measurement of the maximum vibration data of the steam turbine rotor and dynamic balance calculation, and can measure the bending degree of the rotor in a turning state of the steam turbine rotor so as to provide data support for operation and maintenance of the steam turbine;
3) the maximum vibration condition of the gap bridge steam seal of the high and medium pressure rotor can be monitored in real time, data support is provided for unit starting data, meanwhile, after the unit is stopped and overhauled, the data are measured in a turning state, and data support and data comparison can also be provided for whether the bending degree of the high and medium pressure rotor needs to be maintained or not.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (2)
1. A high and medium pressure rotor gap bridge steam seal vibration device for online measurement is characterized by comprising an eddy current sensor, a fixed support and a preamplifier; the eddy current sensor is arranged at the gap bridge steam seal of the high and medium pressure rotor of the unit through the fixed support, is connected with the steam turbine monitoring system through the preamplifier, and is used for acquiring vibration data of the gap bridge steam seal of the high and medium pressure rotor of the unit in real time and transmitting the acquired vibration data to the steam turbine monitoring system for real-time monitoring.
2. The on-line measurement high and medium pressure rotor gap bridge gland seal vibrating device according to claim 1, wherein the fixing support is fixedly connected with an outer cylinder of a steam turbine, and the eddy current sensor is fixedly connected with the fixing support through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921231768.4U CN210625841U (en) | 2019-08-01 | 2019-08-01 | Online measurement high and medium pressure rotor gap bridge steam seal vibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921231768.4U CN210625841U (en) | 2019-08-01 | 2019-08-01 | Online measurement high and medium pressure rotor gap bridge steam seal vibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210625841U true CN210625841U (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921231768.4U Expired - Fee Related CN210625841U (en) | 2019-08-01 | 2019-08-01 | Online measurement high and medium pressure rotor gap bridge steam seal vibration device |
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| CN (1) | CN210625841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812465A (en) * | 2020-06-28 | 2020-10-23 | 大唐东北电力试验研究院有限公司 | External transformer partial discharge sensor device based on extrinsic optical fiber method |
-
2019
- 2019-08-01 CN CN201921231768.4U patent/CN210625841U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812465A (en) * | 2020-06-28 | 2020-10-23 | 大唐东北电力试验研究院有限公司 | External transformer partial discharge sensor device based on extrinsic optical fiber method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 Termination date: 20210801 |