CN115077830A - Metal damping vibration isolation system for steam pipeline and testing method - Google Patents
Metal damping vibration isolation system for steam pipeline and testing method Download PDFInfo
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- CN115077830A CN115077830A CN202210733100.XA CN202210733100A CN115077830A CN 115077830 A CN115077830 A CN 115077830A CN 202210733100 A CN202210733100 A CN 202210733100A CN 115077830 A CN115077830 A CN 115077830A
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- 238000002955 isolation Methods 0.000 title claims abstract description 75
- 238000013016 damping Methods 0.000 title claims abstract description 55
- 239000002184 metal Substances 0.000 title claims abstract description 55
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 230000005284 excitation Effects 0.000 claims abstract description 27
- 229920001967 Metal rubber Polymers 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 238000010998 test method Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000013480 data collection Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention relates to a steam pipeline metal damping vibration isolation system and a testing method, wherein the steam pipeline metal damping vibration isolation system comprises a base, test benches are respectively arranged on two sides of the base, metal damping vibration isolation devices used for being connected with a steam pipeline are respectively arranged on the test benches, an output force sensor is arranged on one test bench, the steam pipeline is connected with a high-temperature steam generator, an electromagnetic vibration excitation device used for applying vibration excitation to the steam pipeline is arranged between the two test benches, an input force sensor is arranged on the electromagnetic vibration excitation device, and the input force sensor and the output force sensor are respectively connected with a computer through a data collector. The vibration isolation system can simulate the actual working condition of the steam pipeline and measure the vibration isolation performance of the steam pipeline in real time.
Description
Technical Field
The invention relates to a steam pipeline metal damping vibration isolation system and a testing method.
Background
The steam pipeline is used as a medium transmission and energy transfer carrier, is widely applied to the field of ships and is an essential component in a ship system. The arrangement of ship system equipment is complex and dispersed, and the steam pipeline is inevitably complex and changeable when being installed and used. The traditional method is to weld the pipeline and some wall surfaces directly, to carry out rigid connection, and then to install the vibration isolation device at a proper position. Due to fluid flow and mechanical excitation of pumps, valves and the like, steam pipelines can generate vibration and are directly transmitted to the wall surface through the traditional welding type ship structure, and then transmitted to other systems and equipment, and the performance and the service life of certain equipment in the ship system are seriously influenced. Meanwhile, the vibration of the steam pipeline can reduce the comfort of the cabin and pollute the environment.
In addition, the steam line vibration isolation device has the following problems and disadvantages:
1) the existing steam pipeline has less vibration isolation performance tests on a steam pipeline system under high temperature and high pressure, the pipeline is firstly connected with high temperature and high pressure steam during the tests, then the pipeline vibration isolation performance is tested, the actual working condition cannot be simulated, the test result and the actual working condition result have great difference, and the accuracy of the test result is difficult to ensure.
2) Most of the existing steam pipeline vibration isolation devices are rubber vibration isolation devices which are seriously influenced by factors such as temperature and pressure, and the vibration isolation devices are easy to deform and lose efficacy at high temperature and high pressure, so that the vibration isolation effect is influenced.
3) Most damping elements adopted by the existing vibration isolation device only carry out vibration isolation in a single direction, the deformation is small, the damping effect is not ideal, and the requirement of multidirectional vibration isolation under complex working conditions cannot be met.
Disclosure of Invention
The invention aims to provide a steam pipeline metal damping vibration isolation system and a testing method.
The technical scheme of the invention is as follows: the utility model provides a steam line metal damping vibration isolation system, includes the base, the test bench is installed respectively to the base both sides, all install the metal damping vibration isolation device who is used for connecting steam line on the test bench, and install output force transducer on one of them test bench, steam line is connected with high temperature steam generator, is located to be provided with between two test benches to be used for applying the electromagnetism excitation device of excitation to steam line, be provided with input force transducer on the electromagnetism excitation device, input force transducer and output force transducer are connected with the computer through data collection station respectively.
Further, metal damping vibration isolation device includes a pair of connection sheet metal that is connected with the test bench, the downside of connection sheet metal all is provided with the installing frame, the upper and lower downside of the upper ledge portion of installing frame all is provided with toper metal rubber, toper metal rubber overcoat has set conical spring, toper metal rubber, conical spring link to each other with the locking shim earlier then are connected with the connection sheet metal, are located and install the connection snap ring that is used for connecting the steam line between the lower ledge portion of two installing frames.
Furthermore, the lower end of the conical spring positioned on the lower side is provided with a locking gasket, the upper end of the conical spring positioned on the upper side is provided with a locking gasket, and the connecting thin plate is provided with a bolt which sequentially penetrates through the locking gasket, the two conical metal rubbers and the mounting frame to be connected with the connecting thin plate.
Further, electromagnetism vibration excitation device is including the installation rack that can lift adjustment, the electromagnetism vibration exciter is installed to the upper end of installation rack, input force sensor installs in the upper end of electromagnetism vibration exciter, installs on the input force sensor be used for with the exciting rod of steam conduit downside contact.
Furthermore, the lower end of the mounting rack is fixedly connected with the base through a bolt, and the upper part of the mounting rack is in threaded connection with a base plate for mounting an electromagnetic vibration exciter.
Furthermore, the electromagnetic vibration exciter is in threaded connection with the input force sensor, and the input force sensor is in threaded connection with the vibration exciting rod.
Furthermore, the computer is connected with a power amplifier through a data connecting line, the power amplifier is connected with the electromagnetic vibration exciter through a data connecting line, the input force sensor and the output force sensor are connected with a data collector through data connecting lines, and the data collector and the computer transmit data through the data connecting lines.
Furthermore, the test bed is in an inverted U shape and is detachably connected with the base through bolts; the metal damping vibration isolation device and the output force sensor are connected with the upper part of the test bed through bolts.
Furthermore, two ends of the steam pipeline are connected with the high-temperature steam generator through a steam transmission hose.
A test method for metal damping vibration isolation of a steam pipeline comprises a metal damping vibration isolation system of the steam pipeline, and comprises the following steps:
(1) completing the construction of a test system, adjusting the height of the electromagnetic vibration exciter, and performing centering adjustment on the positions of the electromagnetic vibration exciter and the vibration exciter when the vibration exciter is completely contacted with the steam pipeline;
(2) generating steam through a high-temperature steam generator, and filling flowing steam into the steam pipeline;
(3) when the surface of the steam pipeline reaches a set temperature and the pressure in the steam pipeline reaches a set pressure, applying excitation with fixed frequency or rated load at the central position of the steam pipeline;
(4) the input force sensor monitors the input force in real time, the output force sensor monitors the output force in real time, received signals are transmitted to the data acquisition unit to be subjected to data acquisition, and the acquired data are transmitted to the computer to be subjected to subsequent data identification and data processing, so that the vibration reduction and isolation effect of the pipeline vibration isolation system is judged.
Compared with the prior art, the invention has the following advantages:
1. the steam pipeline metal damping vibration isolation system and the test method can simulate the actual working condition of a steam pipeline, can measure the vibration isolation performance of the steam pipeline metal damping vibration isolation system at the temperature of 300 ℃ and below 2MPa in real time, can adjust the working temperature and pressure through the high-temperature steam generator, simulate the specific working state of the steam pipeline, and further perform performance test.
2. The method can simulate the actual vibration isolation requirement, change the installation span of the metal damping vibration isolation device on the steam pipeline, further measure the vibration isolation performance of the metal damping vibration isolation device of the steam pipeline under different spans, change the vibration excitation position of the electromagnetic vibration exciter, further measure the vibration isolation performance of the steam pipeline vibration isolation system under excitation in different directions, greatly save the cost and provide a reference basis for the engineering application of the steam pipeline vibration isolation system.
3. The metal damping vibration isolation device is manufactured by processing pure metal materials. Because the metal damping vibration isolation system is manufactured by pure metal processing, the metal damping vibration isolation system cannot deform and lose efficacy when working at high temperature and high pressure, and thus the vibration isolation use requirement of a steam pipeline during working is met.
4. The conical metal rubber and the conical spring are symmetrically arranged about the mounting frame after being connected in parallel, and the conical spring mounting structure has the advantages of large damping, large rigidity and the like. The metal rubber adopts a conical structure, can resist three-dimensional large deformation, and has a three-dimensional vibration isolation effect. The conical metal rubber is an elastic porous material, the internal pores are uniform and regular, and the internal porosity can be changed by changing the density of the metal rubber so as to adapt to the requirements of different degrees of vibration reduction.
Drawings
FIG. 1 is a schematic structural view of a steam pipe metal damping vibration isolation system according to the present invention;
FIG. 2 is an enlarged view of region A of FIG. 1 (an enlarged view of an electromagnetic exciter) according to the present invention;
FIG. 3 is an enlarged view of the output force sensor of the present invention;
FIG. 4 is a structural view of the metal damping vibration isolation device of the present invention;
FIG. 5 is an enlarged view of area B of FIG. 4 in accordance with the present invention;
in the figure: 10-base 20-test bench 30-metal damping vibration isolation device 31-connecting thin plate 32-mounting frame 33-conical metal rubber 34-conical spring 35-connecting snap ring 36-locking gasket 40-steam pipeline 41-high temperature steam generator 50-electromagnetic vibration excitation device 51-mounting bench 52-electromagnetic vibration exciter 53-vibration excitation rod 54-base plate 60-computer 61-output force sensor 62-input force sensor 63-data collector 64-power amplifier 65-frame plate.
Detailed Description
In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
Refer to fig. 1 to 5
The utility model provides a steam line metal damping vibration isolation system, includes base 10, test bench 20 is installed respectively to the base both sides, all install the metal damping vibration isolation device 30 that is used for connecting steam line 40 on the test bench, and install output force sensor 61 on one of them test bench, steam line is connected with high temperature steam generator 41, is located to be provided with between two test benches and is used for applying the electromagnetism vibration excitation device 50 of excitation to steam line's downside, be provided with input force sensor 62 on the electromagnetism vibration excitation device, input force sensor and output force sensor are connected with computer 60 through data collection station 63 respectively to the data of input force sensor and output force sensor collection carry out analysis processes in the computer.
In this embodiment, the metal damping vibration isolation device includes a pair of connection sheets 31 fixedly connected with the test bed through bolts, the lower sides of the connection sheets are respectively provided with an installation frame 32, the upper and lower sides of the upper frame portion of the installation frame are respectively provided with a tapered metal rubber 33, a tapered spring 34 is sleeved outside the tapered metal rubber, and the tapered metal rubber and the tapered spring are connected with the locking gasket and then connected with the connection sheets. The conical metal rubber, the conical spring and the locking gasket are symmetrically arranged relative to the upper frame of the mounting frame, and the symmetric arrangement can ensure that the metal damping vibration isolation device has higher rigidity and damping effect, so that the vibration isolation requirement of a pipeline system is better met. And a connecting snap ring 35 used for connecting a steam pipeline is detachably arranged between the lower frame parts of the two mounting frames through bolts. The steam pipeline is fixed by locking the two semicircular rings, so that the installation of the steam pipeline and the metal damping vibration isolation device is completed.
In this embodiment, the lower end of the conical spring located at the lower side is provided with a locking gasket 36, and the connecting thin plate is provided with a bolt which sequentially penetrates through the locking gasket, the two conical metal rubbers and the mounting frame to be connected with the connecting thin plate, so as to realize fixation.
In the embodiment, 65Mn is selected as a raw material for the conical spring, the conical metal rubber is formed by spirally winding and blank-winding a stainless steel wire and then performing cold stamping forming, and the wire diameter is 0.3 mm. Preferably, the density of the sample piece is ensured to be uniform, and the metal rubber stamping molding adopts a method of prepressing and then stamping molding. The locking gasket and the conical metal rubber clamping ring are both processed by adopting stainless steel raw materials.
In this embodiment, the frame plate 65 sleeved on the upper portion of the test bed is installed at the upper end of one of the metal damping vibration isolators, that is, the connecting thin plate of the one of the metal damping vibration isolators is connected with the lower end surface of the frame plate through a bolt, the output force sensor is fixed on the upper end surface of the test bed, and the upper end of the output force sensor is connected with the lower side surface of the upper frame portion of the frame plate, so as to monitor the output force. The upper end of the other metal damping vibration isolation device is connected with the lower end face of a frame plate arranged on the upper part of the test bench.
In this embodiment, the electromagnetic vibration excitation device includes an installation rack 51 capable of being adjusted in a lifting manner, an electromagnetic vibration exciter 52 is installed at the upper end of the installation rack, the input force sensor is installed at the upper end of the electromagnetic vibration exciter, and a vibration excitation rod 53 used for contacting with the lower side surface of the steam pipeline is installed on the input force sensor. In order to facilitate disassembly and assembly, the electromagnetic vibration exciter is in threaded connection with the input force sensor, and the input force sensor is in threaded connection with the vibration exciting rod.
In this embodiment, in order to facilitate the assembly and disassembly, the lower end of the mounting rack is fixedly connected with the base through bolts and nuts, and the upper portion of the mounting rack is in threaded connection with a base plate 54 for mounting an electromagnetic vibration exciter, so that the height of the vibration exciter can be adjusted according to actual needs.
In this embodiment, the computer is connected to a power amplifier 64 via a data connection line, so that the vibration analysis software on the computer generates a signal source, and the signal source is amplified by the power amplifier and then transmitted to the electromagnetic vibration exciter. The power amplifier is connected with the electromagnetic vibration exciter through a data connecting line, the input force sensor and the output force sensor are connected with the data collector through a data connecting line, and the data collector and the computer transmit data through the data connecting line, so that data transmission is realized through the data connecting line.
In the embodiment, in order to facilitate the assembly and disassembly of each part, the base and the test bench are respectively provided with a through hole capable of being fixedly connected with the part, and the test bench is inverted U-shaped and is detachably connected with the base through bolts; the metal damping vibration isolation device and the output force sensor are connected with the upper part of the test bed through bolts.
In this embodiment, in order to better transmit steam, two ends of the steam pipeline are connected with the high-temperature steam generator through a steam transmission hose.
In this embodiment, the test bed and the electromagnetic excitation device may be respectively mounted on a base, or may be mounted on a large base together.
A test method for metal damping vibration isolation of a steam pipeline comprises a metal damping vibration isolation system of the steam pipeline, and comprises the following steps:
(1) and (3) completing the construction of a test system:
(1.1) the base and the test platform are fixedly connected through bolts, the test platform and the metal damping vibration isolation device are fixedly connected through bolts, the metal damping vibration isolation device is fixedly connected with the connection clamp ring and the steam pipeline through bolts, the installation rack and the base are fixedly connected through bolts, the adjustable electromagnetic vibration exciter installation rack and the electromagnetic vibration exciter are fixedly connected through bolts, and the height of the electromagnetic vibration exciter can be adjusted by rotating the upper base plate of the installation rack. When the exciting rod is in full contact with the steam pipeline, the positions of the electromagnetic exciter and the exciting rod need to be centered and adjusted, and the mounting rack is locked through a nut or a bolt after centering is completed;
(1.2) connecting a computer, a power amplifier, an electromagnetic vibration exciter, an input force sensor, a data acquisition unit and an output force sensor through a data connecting line;
(1.3) connecting the steam pipeline with the high-temperature steam device through a steam transmission hose;
and (1.4) after the whole test system is built, checking the test system to determine whether the conditions of missing installation, missing connection and the like exist.
(2) And starting the high-temperature steam generator to generate steam, and filling flowing steam into the steam pipeline.
(3) When the surface of the steam pipeline reaches a set temperature and the pressure in the steam pipeline reaches a set pressure, applying excitation with a fixed frequency or a rated load at the central position of the steam pipeline; the specific excitation mode is as follows: a signal source is generated through vibration analysis software installed on a computer, the signal source is amplified by a power amplifier and then transmitted to an electromagnetic vibration exciter, and the electromagnetic vibration exciter receives the amplified signal and then excites the steam pipeline.
(4) In the vibration exciting process, the input force sensor monitors the input force in real time, the output force sensor monitors the output force in real time, received signals are transmitted to the data acquisition unit for data acquisition, and the acquired data are transmitted to the computer for subsequent data identification and data processing, so that the vibration reduction and isolation effect of the pipeline vibration isolation system is judged.
It will be apparent to those skilled in the art that the above-described embodiments of the present invention are merely preferred, and it is not necessary to invent in any way to design a different type of metal damping vibration isolation system and test method for steam pipes according to the teachings of the present invention, and all equivalent changes, modifications, substitutions and alterations made in the scope of the claims of the present invention should be covered by the present invention without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a steam line metal damping vibration isolation system, includes the base, its characterized in that, the test bench is installed respectively to the base both sides, all install the metal damping vibration isolation device who is used for connecting the steam line on the test bench, and install output force transducer on one of them test bench, the steam line is connected with high temperature steam generator, is located to be provided with between two test benches to be used for applying the electromagnetism vibration excitation device of excitation to the steam line, be provided with input force transducer on the electromagnetism vibration excitation device, input force transducer and output force transducer are connected with the computer through data collection station respectively.
2. The steam pipeline metal damping vibration isolation system according to claim 1, wherein the metal damping vibration isolation device comprises a pair of connection thin plates connected with a test bed, mounting frames are arranged on the lower sides of the connection thin plates, conical metal rubbers are arranged on the upper and lower sides of the upper frame portion of each mounting frame, conical springs are sleeved outside the conical metal rubbers, the conical metal rubbers and the conical springs are connected with the locking gaskets and then connected with the connection thin plates, and a connection snap ring for connecting a steam pipeline is arranged between the lower frame portions of the two mounting frames.
3. The metal damping and vibration isolating system for steam pipes according to claim 2, wherein the lower end of the conical spring at the lower side is provided with a locking washer, the upper end of the conical spring at the upper side is provided with a locking washer, and the connecting thin plate is provided with a bolt which passes through the locking washer, the two conical metal rubbers and the mounting frame in sequence to be connected with the connecting thin plate.
4. The steam pipeline metal damping vibration isolation system of claim 1, 2 or 3, wherein the electromagnetic vibration excitation device comprises a mounting rack capable of being adjusted up and down, an electromagnetic vibration exciter is mounted at the upper end of the mounting rack, the input force sensor is mounted at the upper end of the electromagnetic vibration exciter, and a vibration excitation rod for contacting with the lower side surface of the steam pipeline is mounted on the input force sensor.
5. The steam pipeline metal damping vibration isolation system according to claim 4, wherein the lower end of the mounting rack is fixedly connected with the base through a bolt, and the upper part of the mounting rack is in threaded connection with a base plate for mounting an electromagnetic vibration exciter.
6. The steam pipeline metal damping vibration isolation system according to claim 4, wherein the electromagnetic vibration exciter is in threaded connection with the input force sensor, and the input force sensor is in threaded connection with the exciting rod.
7. The steam pipeline metal damping vibration isolation system according to claim 1, wherein the computer is connected with a power amplifier through a data connection line, the power amplifier and the electromagnetic vibration exciter are connected through a data connection line, the input force sensor and the output force sensor are both connected with a data collector through a data connection line, and the data collector and the computer transmit data through the data connection line.
8. The steam line metal damping vibration isolation system of claim 1, 2, 3, 5 or 6, wherein said testbed is of inverted U shape and is detachably connected to the base via bolts; the metal damping vibration isolation device and the output force sensor are connected with the upper part of the test bed through bolts.
9. The metal damping and vibration isolating system for steam pipeline according to claim 1, 2, 3, 5 or 6, wherein the two ends of the steam pipeline are connected to the high temperature steam generator via a steam transmission hose.
10. A test method for metal damping vibration isolation of a steam pipeline comprises the metal damping vibration isolation system of claim 4, and is characterized by comprising the following steps of:
(1) completing the construction of a test system, adjusting the height of the electromagnetic vibration exciter, and performing centering adjustment on the positions of the electromagnetic vibration exciter and the vibration exciter when the vibration exciter is completely contacted with the steam pipeline;
(2) generating steam through a high-temperature steam generator, and filling flowing steam into the steam pipeline;
(3) when the surface of the steam pipeline reaches a set temperature and the pressure in the steam pipeline reaches a set pressure, applying excitation with fixed frequency or rated load at the central position of the steam pipeline;
(4) the input force sensor monitors the input force in real time, the output force sensor monitors the output force in real time, received signals are transmitted to the data acquisition unit to be subjected to data acquisition, and the acquired data are transmitted to the computer to be subjected to subsequent data identification and data processing, so that the vibration reduction and isolation effect of the pipeline vibration isolation system is judged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210733100.XA CN115077830B (en) | 2022-06-27 | 2022-06-27 | Method for testing metal damping vibration isolation of steam pipeline |
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| CN202210733100.XA CN115077830B (en) | 2022-06-27 | 2022-06-27 | Method for testing metal damping vibration isolation of steam pipeline |
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