CN103669631A - Novel tuning gas-liquid column damper with damping and frequency dual regulation function and structural vibration control system - Google Patents
Novel tuning gas-liquid column damper with damping and frequency dual regulation function and structural vibration control system Download PDFInfo
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Abstract
The invention discloses a novel tuning gas-liquid column damper with a damping and frequency dual regulation function and a structural vibration control system. The damper can be used for regulating damping and frequency conveniently, thereby achieving the optimal vibration / shock reduction effect on a controlled structural object in different construction phases under different intensities of loads. The novel damper has two characteristics, wherein one characteristic is that a damper valve which can regulate damping force is arranged on a horizontal section of a U-shaped pipe, and the damper valve is a magneto-rheological friction-type damper valve or an electromagnet friction-type damper valve; the other characteristic is that a gas column is further closed at vertical sections on the two sides of the U-shaped pipe, an air pressure regulation device is also installed, and the frequency of the damper is changed by means of regulating air pressure. The structural vibration control system is composed of at least one damper, at least one sensor used for measuring a structural vibration state and at least one controller, and can achieve the optimal vibration control effect on a structure in different construction phases under different use conditions and different intensities of imposed loads.
Description
Technical field
The present invention relates to for building, novel tuning gas column damper and the Structural Vibration Control Systems with damping and frequency dual regulating functions of the field of vibration control such as bridge, ocean platform, power transmission tower, by the real-time adjusting to damping and frequency, realize the optimal effectiveness to structural vibration control.
Background technology
Due to features such as self flexibility are large, damping is low, easily there is significantly vibration in highrise building, large-span structure, vibration damping/shake that application damper carries out structure is effective method under the External Force Actings such as wind, earthquake, service load.
Tuning column damper (Tuned Liquid Column Damper, TLCD) be to develop and the effective vibration absorber of formation on Tuned Liquid basis, TLCD device is made U-shaped conventionally, by two vertical sections and a horizontal segment, formed, when structure is subject to External Force Acting, liquid in U-shaped pipe occurs to flow or vibration, produces the active force with structural vibration opposite direction, thereby reaches the object of vibration damping/shake.By designing and regulating the characteristic propertiess such as U-shaped liquid in pipe length, can realize the best vibration damping effect under certain vibration mode to ad hoc structure.But the systematic parameter of this traditional TLCD is relatively fixing, cannot makes adjusting easily and fast for different construction stages of structure and varying strength load action, thereby cannot realize best vibration damping/shake effect.
Traditional TLCD is improved, or combine with other novel energy-consumption members, there is engineering significance.These improved TLCD are being known in the art.The US Patent No. 2004/0201153A1 of " the tuning column damper of active that Propeller-controlled active tuned-liquid-column damper(propeller is controlled) " that the Chinese patent CN2610162Y of " the active harmony column damper that propeller is controlled " by name submitted on April 7th, 2004 as: Chen Yongxiang and Yung-Hsiang Chen thereof submitted on April 9th, 2004; By king, repaiied the Chinese patent CN101070893A that is called " magnetic-fluid change type regulation-liquid column damper " that dares to submission on June 4th, 2007; The use such as Wang magnetorheological (MR) liquid replaces the water in traditional TLCD to make the performance that MR-TLCD improves damper, and Shum etc. [2] adopt the TLCD device of supercharging to controlling in the vibration under wind action across cable stayed bridge greatly.
TLCD is to being had close relationship by the vibration damping/shock stability of control structure and its intrinsic frequency and damping.Conventionally, need to design the intrinsic frequency of TLCD and certain fundamental frequency of structure and approach, meanwhile, the damping of TLCD also need to be carried out optimal design according to different frequencies.The two complements each other, and vibration isolation effect is played to conclusive effect.The existing improvement of carrying out for traditional TLCD and research, be all for the single factors in frequency or damping, fail to have the function of dual regulation, limited to the range of application of TLCD and effect improvement, can not realize the best vibration damping/shake effect under the different operating modes of structure and different load.Meanwhile, as the MR-TLCD of the propositions such as Wang has good performance to damping adjusting, but it involves great expense, and does not possess the function of regulating frequency, and when structural vibration frequency is during away from natural frequency of damper, vibration damping/shake successful declines; King repaiies the patent (CN101070893A) of brave submission, just at U-shaped pipe horizontal segment, adopt magnetic flow liquid, reduced the consumption of magnetic flow liquid, but due to the strong nonlinearity characteristic of MR damper, in actual modeling and application, there is restriction, nor possess the function of regulating frequency.Thereby, in engineering in the urgent need to a kind of TLCD with damping and frequency dual regulating functions.
Summary of the invention
The present invention's technical problem first to be solved is to provide a kind of tuning gas column damper with frequency and the dual adjustable function of damping, and have power consumption little, cost is low, model is simple, be easy to control and the high feature of efficiency.For this reason, the present invention is by the following technical solutions:
A kind of novel tuning gas column damper with damping and frequency dual regulating functions, comprise the U-shaped pipe with bottom level pipeline section, it is characterized in that described damper be also provided be placed in U-shaped pipe bottom level pipeline section damping force adjusting device, be positioned at the motion fluid column in damping force adjusting device both sides of U-shaped pipe and act on respectively two lateral movement fluid column outer ends for changing the closed at both ends gas column of damper frequency; Closed at both ends gas column connects their barometric control unit.
Adopting on the basis of technique scheme, the present invention also can adopt following further technical scheme:
The damping force adjusting device of U-shaped pipe bottom level pipeline section adopts friction-type orifice valve.
The damping force adjusting device of U-shaped pipe bottom level pipeline section adopts magneto-rheological friction type orifice valve or electromagnet friction-type orifice valve, by regulating the input voltage of magneto-rheological friction type orifice valve and electromagnet friction-type orifice valve or the size that electric current changes the damping force of orifice valve.
Closed at both ends gas column is in respectively vertical section of the both sides of U-shaped pipe.
Closed air column also connects the device of measuring pressure or pressure.
Closed at both ends gas column connects respectively barometric control unit by the first conduit and the second conduit, between closed at both ends gas column, also by connecting duct, connects; The 5th valve is set on connecting duct and controls conducting and the isolation between closed at both ends gas column; The 1st valve and the 2nd valve are set respectively on the first conduit and the second conduit and control conducting and the isolation of closed at both ends gas column and its barometric control unit.
Described connecting duct is connected between the first conduit and the second conduit, the first conduit and the second conduit with connecting duct junction before the 3rd valve and the 4th valve are set respectively, the 1st valve and the 2nd valve are separately positioned on behind the first conduit and the second conduit and connecting duct junction.
Another technical problem to be solved of the present invention is to provide a kind of Structural Vibration Control Systems of using above-mentioned tuning gas column damper.For this reason, the present invention is by the following technical solutions:
A Structural Vibration Control Systems, is characterized in that it comprises:
The tuning gas column damper that at least one is claimed in claim 1; With
At least one sensor, for measuring the vibrational state of structure; With
At least one controller, be used for from sensor acknowledge(ment) signal and the curtage that changes damping force adjusting device according to signal with damping adjusting power, control closed air column extraction gas to change the air pressure closed air column.
Owing to adopting technical scheme of the present invention, the present invention is a kind of novel tuning gas column damper, compare with traditional TLCD, on original device, added friction damper, and at closed at both ends gas column, settled the air pump device of adjustable pressure, realized the frequency of TLCD and the dual regulating functions of damping, can implementation structure in the different construction stages best vibration damping/shake effect under different operating modes and different load; Meanwhile, application magneto-rheological friction type or electromagnet friction-type orifice valve are to change damping, and the closed air column of applying adjustable pressure changes frequency, realized that model is simply accurate, easy to operate precisely, vibration damping (shake) efficient energy-saving, changed simple and feasible advantage.
To sum up, the present invention has following plurality of advantages:
(1) simple in structure, take up space little, cost is low, easy for installation;
(2) utilize the adjustable character of magnetic flow liquid, by changing the magnetic field of voltage/current regulating action on magnetic flow liquid, change fast magnetic flow liquid condition, adopt the simple friction damper of model, realize the damping of easily and accurately adjusting damper;
(3) according to the character of electromagnet, the voltage on regulating magnet, changes magnetic force size, adjusts the frictional force between electromagnet and piston rod, realizes facilitating of damping force adjustable;
(4) there is closed air column and barometric control unit, can adjust according to architectural characteristic the frequency of damper.
(5) coordinate with sensor, controller, be easy to realize to the economy of structural vibration, efficient, safe, durable closed-loop control.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the novel tuning gas column damper embodiment of the dual regulation and control of damped frequency provided by the present invention.
Fig. 2 a is the schematic diagram of magneto-rheological friction type orifice valve while adopting circular slide bar, single valve dual Piston.
Fig. 2 b is the schematic diagram of magneto-rheological friction type orifice valve while adopting circular slide bar, bivalve list piston type.
Fig. 2 c is the B-B cross-sectional view of magneto-rheological friction type orifice valve while adopting circular slide bar.
Schematic diagram when Fig. 3 a is magneto-rheological friction type orifice valve employing rectangle slide bar, single valve dual Piston.
Schematic diagram when Fig. 3 b is magneto-rheological friction type orifice valve employing rectangle slide bar, bivalve list piston type.
C-C cross-sectional view when Fig. 3 c is magneto-rheological friction type orifice valve employing rectangle slide bar.
Schematic diagram when Fig. 4 a is electromagnet friction-type orifice valve employing single valve dual Piston.
Schematic diagram when Fig. 4 b is electromagnet friction resistance type Buddhist nun valve employing bivalve list piston type.
Fig. 4 c-1,4c-2 are the D-D cross-sectional view of electromagnet friction resistance type Buddhist nun valve, the situation while having shown respectively the rounded and rectangle of slide bar 8.
The A-A cross-sectional view that Fig. 5 a, 5b, 5c are piston.
Fig. 6 is the novel tuning gas-liquid post Damper Control system schematic of the dual regulation and control of damped frequency.
1---horizontal pipeline section, 2---adjustable resistance damper,
3,3 '---vertical pipeline section, 31---motion fluid column, 4,4 '---closed air column,
5,5 '---barometric control unit, 51,51 ', 52,52 ', 53---valve,
6,6 '---connecting tube, 7---piston,
8---slide bar, 9---the cavernous body of dipping magnetic flow liquid,
10---magnet exciting coil, 11---hold-down nut,
12---external power supply wire, 13---fixed bearing,
14---electromagnet, 15---stopping means,
16---piston baffle, 17---throttle orifice,
18---piston and horizontal pipeline section gap, 19---sensor,
20---controller
The specific embodiment
Novel tuning gas column damper (as shown in Figure 1) in the present invention, comprise U-shaped pipe 1, be installed on U-shaped pipe horizontal segment can damping adjusting power orifice valve 2, be positioned at the vertically closed air column 4,4 ' and regulate accordingly pressure apparatus 5 of section of U-shaped pipe, 5 ', and motion fluid column 31.
At the horizontal pipeline section place of this U-shaped pipe, install can damping adjusting power orifice valve 2 adopt friction-type orifice valves, for example adopt magneto-rheological friction type orifice valve or electromagnet friction-type orifice valve, orifice valve 2 is connected with external power source by external wire 12, the voltage/current that changes external power source, can play the effect of damping adjusting device damping.Vertical pipeline section 3 and 3 ' closed air column 4 and 4 ' above, by valve 52,52 ', 51,51 ' and connecting tube 6,6 ' be connected with 5 ' with barometric control unit 5, meanwhile, two sections of closed air columns connect by conduit 55, centre arranges valve 53.
Described frequency regulation function is realized with valve 51,51 ', 52,52 ', 53 by barometric control unit 5,5 '.
Gas in closed air column 4,4 ' can be chosen air or other gas with design as requested, and barometric control unit comprises the similar devices such as air pump, and closed air column 4,4 ' also can connect pressure tester, and pressure tester comprises the instruments such as pressure gage, pressure gauge.
The frequency of damper is determined by the static pressure of closed air column.Thereby, when needs change damper frequency, first valve 52,52 ', 53 is opened, make two ends gas column conducting, pressure equates, and gas column volume do not change with the motion of liquid, thus gas column pressure is now equal to static pressure.Afterwards, conducting valve 51,51 ', by bleeding or inflating, adjusts to desired value by gas column pressure by barometric control unit 5,5 '.Then, valve-off 51,51 '.At fluid column, move to equilbrium position, when vertically pipeline section liquid level is equal, valve-off 53, then valve-off 52,52 '.This process implementation the adjusting of frequency.By barometric control unit 5,5 ' bleed or inflate and can regulate gas column air pressure to be greater than or less than ambient pressure, but be difficult to realize air pressure, be zero (perfect vacuum).For this purpose, can valve-off 51,51 ', open valve 52,52 ', 53, by two ends gas column conducting, two ends, fluid column top air pressure is equated, the situation when damper frequency realizing is equivalent to closed air and is zero.
As mentioned above, closed at both ends gas column can be realized UNICOM or isolation by valve and conduit.When regulating closed air column initial static air pressure, the two is communicated with, thereby two ends initial static air pressure is equated, simplifies initial modeling and the operation easier of damper.After adjusting initial static air pressure, closed at both ends gas column is isolated to sealing by valve, closed at both ends gas column air pressure changes with fluid column motion, plays the effect of gas spring, thereby plays the effect of damping adjusting device frequency.To closed at both ends gas column space, by inflating or bleeding, can realize the adjusting to gas column initial static pressure.
Described magnetorheological wiping type orifice valve can adopt but be not limited to the implementation shown in Fig. 2 a-c and Fig. 3 a-c.
Fig. 2 a-c is depicted as circular slide bar orifice valve; Can adopt but be not limited to the bivalve list piston type shown in the single valve dual Piston shown in Fig. 2 a and Fig. 2 b.Fig. 2 c is depicted as the cross-sectional view of circular slide bar damper valves.The peripheral magnet exciting coil 10 that is wound around of cavernous body 9 at dipping magnetic flow liquid, is fixed in horizontal pipeline section by fixed bearing 13; There is Frictional Slipping with slide bar 8 in cavernous body 9, slide bar 8 is connected with piston 7, thereby motion liquid is played to throttling action.Magnet exciting coil 10 is connected with external power source by external power supply wire 12, and by adjustment outer power voltage/electric current, the condition of cavernous body 9 changes, and the frictional force between slide bar 8 also changes, thereby realizes the adjusting of damper damping.
Fig. 3 a-c is depicted as rectangle slide bar damper valves; Can adopt but be not limited to the bivalve list piston type shown in the single valve dual Piston shown in Fig. 3 a and Fig. 3 b.Fig. 3 c is depicted as the cross-sectional view of rectangle slide bar damper valves.Cavernous body 9 upper and lowers at dipping magnetic flow liquid respectively arrange electromagnet (magnet exciting coil) 14, by fixed bearing 13, are fixed in horizontal pipeline section; There is Frictional Slipping with slide bar 8 in cavernous body 9, slide bar 8 is connected with piston 7, thereby motion liquid is played to throttling action.Electromagnet 14 is connected with external power source by external power supply wire 12, and by adjustment outer power voltage/electric current, the condition of cavernous body 9 changes, and the frictional force between slide bar 8 also changes, thereby realizes the adjusting of damper damping.
Described electromagnet friction-type orifice valve can adopt but be not limited to the implementation shown in Fig. 4 a, b, c-1, c-2.
Fig. 4 a is depicted as single valve dual Piston, and Fig. 4 b is depicted as the modes such as bivalve list piston type.Cross-sectional view when Fig. 4 c-1, c-2 are respectively the rounded and rectangle of slide bar 8.By fixed bearing 13, on horizontal segment tube wall, be fixed with electromagnet 14, the slide bar 8 of being made by ferromagnetic material makes it keep directly contacting with electromagnet 14 by stopping means 15; Slide bar 8 is connected with piston 7.The voltage of the external power supply of regulating magnet 14, changes the magnetic force of electromagnet, thereby changes the frictional force between electromagnet 14 and slide bar 8, and the damping that realizes damper regulates.
For the embodiment of piston 7, can adopt but be not limited to the form shown in Fig. 5 a-c.Piston baffle 16 can adopt totally enclosed type as shown in Figure 5 a; Also can adopt as shown in Figure 5 b semi-enclosed, baffle plate 16 is set to multi-disc, between each sheet, is provided with space; Also can adopt mode as shown in Figure 5 c, piston baffle 16 and horizontal pipeline section inwall are arranged to gap 18, also different quantity and big or small throttle orifice 17 can be set on piston baffle simultaneously.Although Fig. 5 be take circular slide bar as exemplifying the implementation of piston, similarly, when adopting rectangle slide bar, piston also can adopt totally enclosed type, semi-enclosed and throttling cellular type.
During actual use, according to specific needs, selecting tuning liquid, confining gas and U-shaped tube material, cross sectional shape; Select suitable orifice valve, according to the different operating modes of structure, regulating power source voltage and gas column air pressure, damping and the frequency of change damper.
Fig. 6 is the system signal of the present invention when being applied to closed loop vibration isolation.The present invention is placed in structure conventionally can there is the position compared with large amplitude, first, according to characteristics such as the intrinsic frequency of structure and dampings, chooses suitable frequency and damping.By being placed in structural sensor 19, obtain the vibrational state of structure, application controller 20 calculates required voltage/current and closed air column pressure, and by regulator and valve and the adjusting of external power supply realization to damper frequency and damping, to obtain optimum vibration damping/shake effect.
Claims (8)
1. a novel tuning gas column damper with damping and frequency dual regulating functions, comprise the U-shaped pipe with bottom level pipeline section, it is characterized in that described damper be also provided be placed in U-shaped pipe bottom level pipeline section damping force adjusting device, be positioned at the motion fluid column in damping force adjusting device both sides of U-shaped pipe and act on respectively two lateral movement fluid column outer ends for changing the closed at both ends gas column of damper frequency; Closed at both ends gas column connects their barometric control unit.
2. a kind of novel tuning gas column damper with damping and frequency dual regulating functions according to claim 1, is characterized in that, the damping force adjusting device of U-shaped pipe bottom level pipeline section adopts friction-type orifice valve.
3. a kind of novel tuning gas column damper with damping and frequency dual regulating functions according to claim 1, it is characterized in that, the damping force adjusting device of U-shaped pipe bottom level pipeline section adopts magneto-rheological friction type orifice valve or electromagnet friction-type orifice valve, by regulating the input voltage of magneto-rheological friction type orifice valve and electromagnet friction-type orifice valve or the size that electric current changes the damping force of orifice valve.
4. a kind of novel tuning gas column damper with damping and frequency dual regulating functions according to claim 1, is characterized in that, closed at both ends gas column is in respectively vertical section of the both sides of U-shaped pipe.
5. a kind of novel tuning gas column damper with damping and frequency dual regulating functions according to claim 1, is characterized in that, closed air column also connects the device of measuring pressure or pressure.
6. a kind of novel tuning gas column damper with damping and frequency dual regulating functions according to claim 1, it is characterized in that, closed at both ends gas column connects respectively barometric control unit by the first conduit and the second conduit, between closed at both ends gas column, also by connecting duct, connects; The 5th valve is set on connecting duct and controls conducting and the isolation between closed at both ends gas column; The 1st valve and the 2nd valve are set respectively on the first conduit and the second conduit and control conducting and the isolation of closed at both ends gas column and its barometric control unit.
7. a kind of novel tuning gas column damper with damping and frequency dual regulating functions according to claim 6, it is characterized in that, described connecting duct is connected between the first conduit and the second conduit, the first conduit and the second conduit with connecting duct junction before the 3rd valve and the 4th valve are set respectively, the 1st valve and the 2nd valve are separately positioned on behind the first conduit and the second conduit and connecting duct junction.
8. a Structural Vibration Control Systems, is characterized in that it comprises:
At least one tuning gas column damper claimed in claim 1; With
At least one sensor, for measuring the vibrational state of structure; With
At least one controller, be used for from sensor acknowledge(ment) signal and the curtage that changes damping force adjusting device according to signal with damping adjusting power, control closed air column extraction gas to change the air pressure closed air column.
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| CN104806455A (en) * | 2015-02-26 | 2015-07-29 | 上海交通大学 | Deepwater semi-submersible platform type wind power plant |
| CN105064526A (en) * | 2015-08-07 | 2015-11-18 | 安徽农业大学 | Tuned liquid damper with earthquake pre-warning and intensity measuring functions |
| CN108035599A (en) * | 2017-12-22 | 2018-05-15 | 横琴国际知识产权交易中心有限公司 | Anti-seismic structure and shear beam for shear beam |
| CN108468459A (en) * | 2018-04-23 | 2018-08-31 | 天津大学 | Liquid column type damping device is tuned with generating function |
| CN108698674A (en) * | 2016-03-02 | 2018-10-23 | Ifp新能源公司 | Systems stabilisation including multiple U-shaped damping devices, particularly for the systems stabilisation of Floating support |
| CN108698675A (en) * | 2016-03-02 | 2018-10-23 | Ifp新能源公司 | The systems stabilisation for including at least three interconnection liquid storage devices, is especially used for the systems stabilisation of Floating support |
| EP3589793A4 (en) * | 2017-02-28 | 2020-06-17 | Hummingbird Kinetics LLC | Tuned liquid damper with a membrane liquid-gas interface |
| CN112554359A (en) * | 2020-11-17 | 2021-03-26 | 同济大学 | Offshore wind power generation high tower controlled and protected by semi-active frequency modulation PTLCD |
| CN114909010A (en) * | 2022-04-18 | 2022-08-16 | 中国长江三峡集团有限公司 | Tuning air pressure liquid column damper and tower |
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| CN104806455A (en) * | 2015-02-26 | 2015-07-29 | 上海交通大学 | Deepwater semi-submersible platform type wind power plant |
| CN105064526A (en) * | 2015-08-07 | 2015-11-18 | 安徽农业大学 | Tuned liquid damper with earthquake pre-warning and intensity measuring functions |
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| US11993951B2 (en) | 2017-02-28 | 2024-05-28 | Hummingbird Kinetics LLC | Tuned liquid damper with a membrane liquid-gas interface |
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| CN108468459A (en) * | 2018-04-23 | 2018-08-31 | 天津大学 | Liquid column type damping device is tuned with generating function |
| CN108468459B (en) * | 2018-04-23 | 2023-12-19 | 天津大学 | Tuning liquid column type damping device with power generation function |
| CN112554359A (en) * | 2020-11-17 | 2021-03-26 | 同济大学 | Offshore wind power generation high tower controlled and protected by semi-active frequency modulation PTLCD |
| CN112554359B (en) * | 2020-11-17 | 2021-11-16 | 同济大学 | Offshore wind power generation high tower controlled and protected by semi-active frequency modulation PTLCD |
| CN114909010A (en) * | 2022-04-18 | 2022-08-16 | 中国长江三峡集团有限公司 | Tuning air pressure liquid column damper and tower |
| CN114909010B (en) * | 2022-04-18 | 2023-06-02 | 中国长江三峡集团有限公司 | Tuned air pressure liquid column damper and tower |
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