CN113984186A - Steam turbine cylinder body vibration frequency testing device - Google Patents
Steam turbine cylinder body vibration frequency testing device Download PDFInfo
- Publication number
- CN113984186A CN113984186A CN202111045037.2A CN202111045037A CN113984186A CN 113984186 A CN113984186 A CN 113984186A CN 202111045037 A CN202111045037 A CN 202111045037A CN 113984186 A CN113984186 A CN 113984186A
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- vibration frequency
- steam turbine
- cylinder body
- pedestal
- testing device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a vibration frequency testing device for a steam turbine cylinder body, wherein an electric hoist is arranged on a side arm of a support plate to drive a lifting plate to lift, vibration frequency testers are distributed at the bottom of the lifting plate, and measuring heads at the bottoms of all the vibration frequency testers are arranged in an arc shape matched with the cylinder body, so that the side heads are contacted with the cylinder body, and the vibration frequency of the steam turbine cylinder body can be tested in an all-dimensional manner.
Description
Technical Field
The invention relates to the field of steam turbines, in particular to a device for testing the vibration frequency of a steam turbine cylinder body.
Background
The steam turbine is also called as a steam turbine engine, and is a rotary steam power device.A high-temperature high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. The cylinder body part of the steam turbine vibrates in the engineering process, and the document 'Shanxi electric power' 2021.2 first discloses the diagnosis and treatment of abnormal problems of a vibration measurement system of a steam turbine generator unit, which indicates that the vibration of the steam turbine needs to be measured when the steam turbine works. Prior art patent CN2865179Y discloses a loudspeaker diaphragm resonant frequency tester, and prior art patent CN106918388A discloses a frequency test system of a steering column, and both of the two patents disclose instruments for carrying out frequency test, but for a steam turbine cylinder body, the cylinder body is cylindrical and needs to test vibration frequency in an all-round way, so that the problem is very necessary to solve.
Disclosure of Invention
In order to solve the problems, the invention provides a device for testing the vibration frequency of a steam turbine cylinder body, wherein an electric hoist is arranged on a side arm of a support plate to drive a lifting plate to lift, vibration frequency testers are distributed at the bottom of the lifting plate, and measuring heads at the bottom of all the vibration frequency testers are arranged in an arc shape matched with the cylinder body, so that the side heads are contacted with the cylinder body, the vibration frequency of the steam turbine cylinder body can be tested in an all-dimensional manner, and the problems in the background technology are solved.
The invention aims to provide a vibration frequency testing device for a steam turbine cylinder body, which comprises a fixed pedestal, wherein a longitudinal support plate extends upwards from the right side of the pedestal, a side arm is arranged at the right end of the top of the support plate, and a vibration frequency tester is arranged at the bottom of the side arm;
both ends all are provided with the electric hoist about the side arm top, and the rope of two electric hoists passes the side arm downwards and is connected with the lifter plate, and lifter plate bottom transverse distribution has the vibration frequency tester, and the gauge head of all vibration frequency testers bottom is the arc range that matches the cylinder body, and there is the installation piece of highly differing at the vibration frequency tester top to install and make the gauge head be the arc range that matches the cylinder body in the lifter plate bottom.
The further improvement lies in that: the bottom end of the support plate is movably connected to the inner bottom end of the pedestal; pedestal open-top, left side swing joint has the upset cylinder in the pedestal, upset cylinder top piston rod swing joint is in the extension board side.
The further improvement lies in that: the pedestal bottom is fixed subaerial through the mounting panel.
The further improvement lies in that: the right side of the side arm is detachably provided with an inclined supporting leg.
The further improvement lies in that: each vibration frequency tester is coated with an installation box, a heat insulation layer is arranged in each installation box and wrapped outside the vibration frequency tester, and a measuring head at the bottom of the vibration frequency tester extends below the installation box; the installation box is fixed in the lifter plate bottom, and the installation piece sets up in the installation box.
The further improvement lies in that: a through opening for the rope to pass through is arranged in the side arm.
The invention has the beneficial effects that: according to the invention, the electric hoist is arranged on the side arm of the support plate to drive the lifting plate to lift, the vibration frequency testers are distributed at the bottom of the lifting plate, and the measuring heads at the bottoms of all the vibration frequency testers are arranged in an arc shape matched with the cylinder body, so that the side heads are contacted with the cylinder body, and the vibration frequency of the steam turbine cylinder body can be comprehensively tested; the support plate can be driven by the turnover cylinder to retract and rotate to the pedestal around the bottom end to the left side, so that the lifting plate is far away from the cylinder body and does not interfere with the cylinder body to perform other operations; the vibration frequency tester is used for insulating heat by coating a heat insulation layer, so that the influence caused by high temperature around the cylinder body is reduced; the lifting plate is driven by the two electric hoists to lift, so that the lifting plate can be inclined, and the adaptability is better; the side arm is supported on the ground through a detachable supporting leg to ensure stability.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the inventive stage.
Figure 3 is a side view of a side arm of the present invention.
Wherein: 1-pedestal, 2-support plate, 3-side arm, 4-vibration frequency tester, 5-electric hoist, 6-rope, 7-lifting plate, 8-measuring head, 9-mounting block, 10-overturning cylinder, 11-piston rod, 12-mounting plate, 13-supporting foot, 14-mounting box, 15-thermal insulation layer and 16-through port.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1-3, the present embodiment provides a device for testing a vibration frequency of a steam turbine cylinder, which includes a fixed pedestal 1, the bottom of the pedestal 1 is fixed on the ground through a mounting plate 12, a longitudinal support plate 2 extends upward from the right side of the pedestal 1, a side arm 3 is disposed at the right end of the top of the support plate 2, and an inclined support leg 13 is detachably disposed at the right side of the side arm 3. Both ends all are provided with electric hoist 5 about 3 tops of side arm, and rope 6 of two electric hoists 5 passes downwards the mouth 16 that passes through of side arm 3 is connected with lifter plate 7, and 7 bottom transverse distribution of lifter plate have vibration frequency tester 4, and the gauge head 8 of 4 bottoms of all vibration frequency testers is the arc range of matcing the cylinder body, and there is the installation piece 9 of highly disparity to install in lifter plate 7 bottom at vibration frequency tester 4 top and makes gauge head 8 be the arc range of matcing the cylinder body. Thus, the lifting plate 7 is driven to lift by the electric hoist 5, the vibration frequency testers 4 are distributed at the bottom of the lifting plate 7, the measuring heads 8 at the bottoms of all the vibration frequency testers 4 are arranged in an arc shape matched with the cylinder body, and the side heads are contacted with the cylinder body, so that the vibration frequency of the steam turbine cylinder body can be comprehensively tested; the lifting plate 7 is driven by the two electric hoists 5 to lift, so that the lifting plate 7 can be inclined, and the adaptability is better; the side arm 3 is also supported on the ground by means of detachable support feet 13 to ensure stability.
The bottom end of the support plate 2 is movably connected with the bottom end in the pedestal 1; the top opening of pedestal 1, left side swing joint has upset cylinder 10 in the pedestal 1, and 11 swing joint of upset cylinder 10 top piston rod are in extension board 2 sides. Therefore, the support plate 2 can be driven by the overturning cylinder 10 to retract and rotate to the pedestal 1 around the bottom end to the left side, and the lifting plate 7 is far away from the cylinder body and does not interfere with the cylinder body to perform other operations
Each vibration frequency tester 4 is coated with a mounting box 14, a heat insulation layer 15 is arranged in each mounting box 14, the heat insulation layer 15 is coated outside the vibration frequency tester 4, and a measuring head 8 at the bottom of the vibration frequency tester 4 extends below the mounting box 14; the mounting box 14 is fixed at the bottom of the lifting plate 7, and the mounting block 9 is arranged in the mounting box 14. Thus, each vibration frequency tester 4 is insulated by being coated with the heat insulating layer 15, and the influence of high temperature around the cylinder is reduced.
In actual use: firstly, the support plate 2 is in a vertical state, the lifting plate 7 is positioned above the cylinder body, the lifting plate 7 is driven to move downwards by starting the two electric hoists 5, so that the side heads 8 of all the vibration frequency testers 4 are in surface contact with the cylinder body, the vibration frequency in the working process of the cylinder body is tested, when the vibration frequency does not need to be tested, the overturning air cylinder 10 is started to drive the piston rod 11 to retract, the support plate 2 rotates leftwards around the movable connection part at the bottom end of the support plate, and therefore the support plate 2 and the part of the side arm 3 on the right side of the support plate are all moved leftwards to the pedestal 1, the vibration frequency testers are far away from the cylinder body, and other operations can be carried out on the cylinder body at the moment.
Claims (6)
1. A vibration frequency testing device for a steam turbine cylinder body comprises a fixed pedestal (1), wherein a longitudinal support plate (2) extends upwards from the right side of the pedestal (1), a side arm (3) is arranged at the right end of the top of the support plate (2), and a vibration frequency tester (4) is arranged at the bottom of the side arm (3);
the method is characterized in that: both ends all are provided with electric hoist (5) about side arm (3) top, and rope (6) of two electric hoist (5) pass side arm (3) downwards and are connected with lifter plate (7), and lifter plate (7) bottom transverse distribution has vibration frequency tester (4), and gauge head (8) of all vibration frequency tester (4) bottom are the arc range that matches the cylinder body, and vibration frequency tester (4) top has installation piece (9) of height difference to install and makes gauge head (8) be the arc range that matches the cylinder body in lifter plate (7) bottom.
2. The steam turbine block vibration frequency testing device according to claim 1, characterized in that: the bottom end of the support plate (2) is movably connected with the inner bottom end of the pedestal (1); pedestal (1) open-top, left side swing joint has upset cylinder (10) in pedestal (1), and upset cylinder (10) top piston rod (11) swing joint is in extension board (2) side.
3. The steam turbine block vibration frequency testing device according to claim 2, characterized in that: the bottom of the pedestal (1) is fixed on the ground through a mounting plate (12).
4. The steam turbine block vibration frequency testing device according to claim 1, characterized in that: the right side of the side arm (3) is detachably provided with an inclined supporting leg (13).
5. The steam turbine block vibration frequency testing device according to claim 1, characterized in that: each vibration frequency tester (4) is coated with a mounting box (14), a heat insulation layer (15) is arranged in each mounting box (14), the heat insulation layer (15) is coated outside the vibration frequency tester (4), and a measuring head (8) at the bottom of the vibration frequency tester (4) extends below the mounting box (14); the installation box (14) is fixed at the bottom of the lifting plate (7), and the installation block (9) is arranged in the installation box (14).
6. The steam turbine block vibration frequency testing device according to claim 1, characterized in that: a through opening (16) for the rope (6) to pass through is arranged in the side arm (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111045037.2A CN113984186B (en) | 2021-09-07 | 2021-09-07 | Steam turbine cylinder body vibration frequency testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111045037.2A CN113984186B (en) | 2021-09-07 | 2021-09-07 | Steam turbine cylinder body vibration frequency testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113984186A true CN113984186A (en) | 2022-01-28 |
| CN113984186B CN113984186B (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111045037.2A Active CN113984186B (en) | 2021-09-07 | 2021-09-07 | Steam turbine cylinder body vibration frequency testing device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070044555A1 (en) * | 2005-08-26 | 2007-03-01 | Klaus-Joachim Busch | Device for performing vibration measurements on a test part having at least one rotor, especially a transmission |
| CN105352687A (en) * | 2015-10-20 | 2016-02-24 | 格兰达技术（深圳）有限公司 | Instrument vibration testing system and application thereof |
| CN205067040U (en) * | 2015-10-20 | 2016-03-02 | 格兰达技术（深圳）有限公司 | A vibrating device for instrument vibration testing |
| JP2018100948A (en) * | 2016-12-22 | 2018-06-28 | Ｊｆｅテクノリサーチ株式会社 | Vibration test method and vibration test equipment |
| CN108414080A (en) * | 2018-06-11 | 2018-08-17 | 河北冀研能源科学技术研究院有限公司 | Device for on-line measurement rotor of turbogenerator set diameter of axle absolute vibration |
| CN112763055A (en) * | 2020-12-29 | 2021-05-07 | 江柴发动机徐州有限公司 | Low-frequency vibration detection device of generator set and working method thereof |
-
2021
- 2021-09-07 CN CN202111045037.2A patent/CN113984186B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070044555A1 (en) * | 2005-08-26 | 2007-03-01 | Klaus-Joachim Busch | Device for performing vibration measurements on a test part having at least one rotor, especially a transmission |
| CN105352687A (en) * | 2015-10-20 | 2016-02-24 | 格兰达技术（深圳）有限公司 | Instrument vibration testing system and application thereof |
| CN205067040U (en) * | 2015-10-20 | 2016-03-02 | 格兰达技术（深圳）有限公司 | A vibrating device for instrument vibration testing |
| JP2018100948A (en) * | 2016-12-22 | 2018-06-28 | Ｊｆｅテクノリサーチ株式会社 | Vibration test method and vibration test equipment |
| CN108414080A (en) * | 2018-06-11 | 2018-08-17 | 河北冀研能源科学技术研究院有限公司 | Device for on-line measurement rotor of turbogenerator set diameter of axle absolute vibration |
| CN112763055A (en) * | 2020-12-29 | 2021-05-07 | 江柴发动机徐州有限公司 | Low-frequency vibration detection device of generator set and working method thereof |
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| CN113984186B (en) | 2022-05-13 |
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