CN203202108U - Damping force controllable viscous damper and intelligent monitoring and control system thereof - Google Patents
Damping force controllable viscous damper and intelligent monitoring and control system thereof Download PDFInfo
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- CN203202108U CN203202108U CN 201320164987 CN201320164987U CN203202108U CN 203202108 U CN203202108 U CN 203202108U CN 201320164987 CN201320164987 CN 201320164987 CN 201320164987 U CN201320164987 U CN 201320164987U CN 203202108 U CN203202108 U CN 203202108U
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Abstract
The utility model discloses a damping force controllable viscous damper and an intelligent monitoring and control system thereof. The damper comprises a cylinder body, a piston and a piston rod, wherein the inside of the cylinder body is separated into a main cylinder and an auxiliary cylinder; the main cylinder is filled with a damping medium consisting of polyethylene glycol and nano-scale silicon dioxide particles together; the silicon dioxide particles are suspended and dispersed in the polyethylene glycol; the piston is arranged inside the main cylinder and can move back and forth along the axial direction of the main cylinder so as to drive the piston rod connected with the piston to move together; and one end of the piston rod penetrates through a damping hole formed in the piston and the other end of the piston rod extends into the auxiliary cylinder. The utility model also discloses the corresponding intelligent monitoring and control system. By the damping force controllable viscous damper and the intelligent monitoring and control system thereof, effective control on a damping force of the damper can be realized and real-time detection and feedback adjustment on the operating state of the damper are realized, so that further protection on safety of a engineering structure is achieved.
Description
Technical field
The utility model belongs to the structural damping technical field, more specifically, relates to a kind of damping force controllable type viscous damper and intellectual monitoring and control system.
Background technique
Damper is the device that provides resistance to motion to realize the depletion kinergety with a kind of.After nineteen seventies, damping begins progressively to be used for the structural engineerings such as building, bridge, railway, and has obtained swift and violent development.At present, damper mainly is divided into spring-damper, hydraulic damper, rotation damper, viscous damper etc., wherein the working principle of viscous damper is according to fluid motion, and particularly fluid can produce the effect of viscous resistance when the throttle orifice and the damper made.Also can reduce advantage such as reaction displacement etc. because it possesses indefinite, the anti-Hou Xinghao of self rigidity, both can reduce structural stress, therefore be widely used in the fields such as tall building, bridge, building structure aseismatic transformation, industrial pipeline equipment antivibration and military project.
The fundamental formular of viscous damper is F=CVa, and wherein F represents damping force, and C is damping constant, and V represents the speed of piston movement, and a is the speed index.Can find out from formula, viscous damper belongs to the velocity profile damper, and its speed index directly has influence on the energy-dissipating property of damper.For the damping energy dissipation material of viscous damper, the present normally used types such as silica gel and silicone oil that mainly comprise.Although silica gel possesses preferably sticking warm nature, moistureproof insulation, compressive strain is little, has the defective of the poor-performings such as temperature stabilization; Silicone oil is owing to possessing good heat-resisting, resistance to oxidation and resistance to low temperature, simultaneously not volatile, compression resistant power is large, shows that tension force is little, chemical stabilization is therefore at present in the industry cycle as the viscous power consumption material of main flow.
Yet the operating rate of viscous damper of the prior art all is to design in advance, in case the vibration of structural engineering, just may cause the damage of damper greater than the design load of viscous damper and the Security of engineering structure is made a big impact; In addition, after viscous damper was installed on the structural engineering, the vibration of engineering structure the situation stressed and displacement that produces can not effectively be monitored, thereby can't the vibrational state of engineering structure be carried out in time, effectively monitors and corresponding control.Correspondingly, in association area, exist the structure of the above-mentioned type damper and the mode that supports the use thereof are made further improved technical need.
The model utility content
Above defective or Improvement requirement for prior art, the purpose of this utility model is to propose a kind of viscous damper and intellectual monitoring and control system of damping force controllable type, wherein pass through the improvement to formation and the critical performance parameters of damper, can realize the effective control to the damper damping force; In addition by design relevant monitoring and control system, can realize in real time the damper running state, Intelligent Measurement and adjust control, thereby reach the better protection to engineering structure safety.
According to an aspect of the present utility model, a kind of viscous damper of damping force controllable type is provided, this damper comprises cylinder body, piston and piston rod, it is characterized in that:
Cylinder interior is separated into master cylinder and secondary cylinder, wherein be filled with the resisting medium that jointly is comprised of polyethyleneglycol and nanometer scale silicon dioxide granule in the master cylinder, and the silicon dioxide granule suspended dispersed is in polyethyleneglycol;
Described piston is arranged on master cylinder inside and can moves around along its axial direction, drives thus the piston rod that is attached thereto together mobile; One end of described piston rod runs through the damping hole that is opened on the piston, and an other end stretches in the secondary cylinder.
According on the other hand of the present utility model, corresponding damper monitoring and control system also are provided, this system comprises detection unit, data acquisition unit, AD conversion unit, photoelectric converter, telecommunication optical fiber and central unit, it is characterized in that:
Described detection unit comprises displacement transducer, velocity transducer and the pull pressure sensor that is arranged on the damper, and they are respectively applied to damper with respect to the relative shift of self tie point, detect in real time and obtain testing result with respect to the speed of related movement signal of self tie point and corresponding to the damping force of this rate signal;
Described data acquisition unit is used for the testing result that obtains is carried out collection of simulant signal, and the analogue signal that gathers through after AD conversion unit and the photoelectric converter processing, transfers to central processing unit via telecommunication optical fiber successively;
Described central processing unit is converted to digital signal with the optical signal that receives and is shown, thus the running state of damper is carried out Real Time Monitoring; In addition, this central processing unit can be adjusted the speed of related movement signal of damper as required, this speed is adjusted signal and is converted to optical signal by being returned by telecommunication optical fiber, then successively through feeding back to damper after photoelectric converter and the AD conversion unit processing, realize thus the corresponding control to damper.
As further preferably, described displacement transducer is the electromagnetic type displacement transducer, and described velocity transducer is magnetoelectric velocity transducer, and described pull pressure sensor is the piezoelectricity type pull pressure sensor.
As further preferably, when the speed of related movement signal that monitors damper when central processing unit surpasses the controlling value of its design objective, then its speed of related movement is locked as controlling value.
In general, according to damping force controllable type viscous damper of the present utility model and monitoring thereof and control system compared with prior art, mainly possess following technological merit:
1, improve by structure, formation and relevant parameter thereof to viscous damper, can realize in the controllability to damping force, and its damping force can keep relatively constant under specific speed, so damping protection better effects if, applicable surface is wider;
2, by to intellectual monitoring and the control system of damper designs based on the optical fiber remote transmission, can show real-time, accurately detection to the damper running state; In addition, can also come the rate signal of damper is adjusted fast according to the reply situation, realize thus the effective control to the damper Security, avoid the damage under rugged environment of damper and engineering structure thereof.
Description of drawings
Fig. 1 is the overall structure schematic diagram according to damping force controllability viscous damper of the present utility model;
Fig. 2 is according to the overall structure schematic diagram of damper monitoring of the present utility model with control system.
In institute's drawings attached, identical reference character is used for representing identical element or structure, wherein:
The secondary cylinder 3-of 1-master cylinder 2-piston rod 4-piston 5-resisting medium 6-damping hole 12-data acquisition unit 13-AD conversion unit 14-photoelectric converter 15-telecommunication optical fiber 16-central unit 111-displacement transducer 112-velocity transducer 113-pull pressure sensor
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Operating rate for all kinds of viscous dampers in the prior art is fixed, in case the vibration of structural engineering is greater than the design load of viscous damper, just may cause the damage of damper and the problem that the Security of engineering structure is made a big impact, the utility model expectation is made corresponding improvement to this type of viscous damper, to realize the effective control to the damper damping force.
Fig. 1 is the overall structure schematic diagram according to damping force controllability viscous damper of the present utility model.Shown in sharp Fig. 1, mainly comprise cylinder body, piston and piston rod etc. according to damping force controllability viscous damper of the present utility model, wherein cylinder interior be separated into such as be about the master cylinder 1 and the secondary cylinder 2 that distribute, be filled with the resisting medium 5 that is jointly formed by polyethyleneglycol and nanometer scale silicon dioxide granule in the master cylinder 1, and the silicon dioxide granule suspended dispersed is in polyethyleneglycol.Piston 4 is arranged on the inside of master cylinder 1 and can moves around along its axial direction, drives thus the piston rod 3 that is attached thereto together mobile.One end of piston rod 3 runs through the damping hole 6 that is opened on the piston 4, and an other end stretches in the secondary cylinder 2.In addition, can also be in each gap or the hole go out to arrange seal element, to improve the sealability of single unit system.
When according to damping force controllable type viscous damper of the present utility model work, piston can move back and forth in master cylinder and secondary cylinder, and resisting medium can produce viscous resistance during through damping hole, plays thus the effect of antidetonation drag reduction.Especially, owing to selecting to form resisting medium by polyethyleneglycol and suspension nano-silicon dioxide particle wherein, more liquid polyethyleneglycol is after hard silicon dioxide granule is combined, silicon dioxide microparticle can be fused in the polyethyleneglycol and consist of preferably coupling, form the very strong damping energy dissipation medium of a kind of and velocity-dependent: when the movement velocity of this medium is slower, hard particles can move around, and makes damping material integral body be rendered as liquid; And when movement velocity was accelerated, hard particles mutually collided and hinders each other motion, saw on the whole that thus the resisting medium toughness that becomes improves, and progressively was converted to solid phase from liquid phase.Correspondingly, this damper can not interfere with each other by the material particle when low speed, and plays the damping energy dissipation effect with normal mode; In case and damper is impacted or when rapid movement occurs, bump between the material particle and be converted to solid phase, produce thus larger damping force and play the power consumption effect with new model.In other words, can not interfere with each other by insulating particles when the low speed according to the constructed damper of the utility model, and mainly play the damping energy dissipation effect with fluid state; In case and damper is impacted or when rapid movement occurs, bump between the insulating particles and be converted to solid phase or near solid phase, produce thus larger damping force and play the power consumption effect.Correspondingly, can effectively realize in the controllability to damping force, and its damping force can keep relatively constant under specific speed.
The main improvements of another one of the present utility model are remote monitoring and the control system of damper.As shown in fig. 1, comprise detection unit, data acquisition unit 12, AD conversion unit 13, photoelectric converter 14, telecommunication optical fiber 15 and central unit 16 according to damper monitoring of the present utility model with control system.Particularly, monitoring cell comprises displacement transducer 111, velocity transducer 112 and the pull pressure sensor 113 that is arranged on the damper, wherein displacement transducer 111 be electromagnetic sensor for example, for the relative displacement with respect to self tie point (fixed installation point) detects to damper; Velocity transducer 112 is used for the relative velocity of damper with respect to self tie point detected, and pull pressure sensor 113 for example is piezoelectric transducer, for detection of the damping force of damper corresponding to this rate signal.
After detection unit is finished above parameter detecting to damper, data acquisition unit 12(for example, the sbRIO-9601 type) these testing signals is carried out the analogue signal high speed acquisition, and by AD conversion unit 13(for example, the NI9215 transition card) is digital signal with analog signal conversion, by photoelectric converter 14 digital signal is converted to optical signal again.This optical signal arrives central unit 16 via telecommunication optical fiber 15 remote transmission, and again converts optical signal to digital signal by photoelectric converter, and is presented on the supervisory control comuter, realizes thus the Real Time Monitoring to the running state of damper.
When meeting with the abominable situation such as earthquake or hurricane, can also adjust by central processing unit 16 the speed controlling value of damper, excessive and cause the damage of connection part with the motion speed of avoiding damper.When concrete the utilization, can also compare with the certain hour interval by acquisition testing data and the speed controlling value with the damper relative velocity, in case the speed monitoring data surpass controlling value, 16 of central processing unit are sent instruction, convert speed command to optical signal by photoelectric converter, and arrive on-the-spot via optical fibre transmission; This optical signal converts digital signal to by photoelectric converter again, and converts analogue signal to by AD conversion unit, then so that damper is carried out motion, the corresponding control that has realized the damper Security with the speed controlling value.
Can monitor in real time displacement, damping force and the speed of all kinds of viscous dampers that comprise above-mentioned damping force controllable type damper according to damper monitoring of the present utility model and control system, the total state is carried out continuous, real-time, online health status monitoring and assessment, the Security of structure is made in real time, estimated accurately.Thereby the while can controls the motion speed controller maximum damping force of damper temporarily at earthquake and hurricane, guarantees the safety of damper member.Correspondingly, greatly continuation Traditional Man monitoring-Control the content is realized predictive maintenance, improves the managerial skills of maintenance, ensures bridge and heavy construction reliability of structure, Security and durability, avoids potential catastrophic event to occur.
In order to realize aforementioned monitoring to damper and control, can also develop corresponding Monitoring and Controlling software, and be installed on the computer of central unit.For example, can come the functions such as settling signal collection, storage, playback and analysis by software, aspect control, the speed controlling value can be set independently.But the storage of signal free of discontinuities continuous acquisition, but store data playback, analysis.Use form that data acquisition channel is set, passage can divide into groups, but the mass change channel setting.Usage data library management sensor parameters is once proofreaied and correct and the parameter typing, repeatedly uses, and need not repeat the input pickup parameter.Automatically distribute the data capture physical channel of measuring passage.Auto-associating is measured passage and sensor.The classification debugging progressively guides the user to use correct setting, and signal analysis and display interface can be fully self-defined.In addition, for different application and personal preference, the freely combination of definition interfaces of user and outward appearance, signal disposal and analysis type, display format, algorithm parameter etc.
Those skilled in the art will readily understand; the above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. the viscous damper of a damping force controllable type, this damper comprises cylinder body, piston and piston rod, it is characterized in that:
Cylinder interior is separated into master cylinder (1) and secondary cylinder (2), wherein be filled with the resisting medium (5) that jointly is comprised of polyethyleneglycol and nanometer scale silicon dioxide granule in the master cylinder (1), and the silicon dioxide granule suspended dispersed is in polyethyleneglycol;
Described piston (4) is arranged on master cylinder inside and can moves around along its axial direction, drives thus the piston rod (3) that is attached thereto together mobile; One end of described piston rod (3) runs through the damping hole (6) that is opened on the piston (4), and an other end stretches in the secondary cylinder (2).
2. system that is used for damper as claimed in claim 1 is carried out intellectual monitoring and control, this system comprises detection unit, data acquisition unit (12), AD conversion unit (13), photoelectric converter (14), telecommunication optical fiber (15) and central unit (16), it is characterized in that:
Described detection unit comprises displacement transducer (111), velocity transducer (112) and the pull pressure sensor (113) that is arranged on the damper, and they are respectively applied to damper with respect to the relative shift of self tie point, detect in real time and obtain testing result with respect to the speed of related movement signal of self tie point and corresponding to the damping force of this rate signal;
Described data acquisition unit (12) is used for the testing result that obtains is carried out collection of simulant signal, the analogue signal that gathers transfers to central processing unit (16) via telecommunication optical fiber (15) after passing through successively AD conversion unit (13) and photoelectric converter (14) processing;
Described central processing unit (16) is converted to digital signal with the optical signal that receives and is shown, thus the running state of damper is carried out Real Time Monitoring; In addition, this central processing unit (16) can be adjusted the speed of related movement signal of damper as required, this speed is adjusted signal and is converted to optical signal by being returned by telecommunication optical fiber, then feed back to damper after passing through successively the processing of photoelectric converter (14) and AD conversion unit (13), realize thus the corresponding control to damper.
3. system as claimed in claim 2, it is characterized in that, described displacement transducer (111) is the electromagnetic type displacement transducer, and described velocity transducer (112) is magnetoelectric velocity transducer, and described pull pressure sensor (113) is the piezoelectricity type pull pressure sensor.
4. system as claimed in claim 2 or claim 3 is characterized in that, when the speed of related movement signal that monitors damper when central processing unit (16) surpasses the controlling value of its design objective, then its speed of related movement is locked as controlling value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320164987 CN203202108U (en) | 2013-04-03 | 2013-04-03 | Damping force controllable viscous damper and intelligent monitoring and control system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320164987 CN203202108U (en) | 2013-04-03 | 2013-04-03 | Damping force controllable viscous damper and intelligent monitoring and control system thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291803A (en) * | 2013-04-03 | 2013-09-11 | 华中科技大学 | Damping force controllable viscous damper and intelligent monitoring and control system of damping force controllable viscous damper |
| CN104154160A (en) * | 2014-08-11 | 2014-11-19 | 浙江建科减震科技有限公司 | Self-resetting viscous damper |
| CN106090440A (en) * | 2016-06-16 | 2016-11-09 | 清华大学 | One kind firm supporting damping framework |
| CN108386050A (en) * | 2018-04-27 | 2018-08-10 | 南京林业大学 | A kind of pressure controllable type fluid linking damper |
| CN109723755A (en) * | 2018-12-10 | 2019-05-07 | 北京矿冶科技集团有限公司 | Mining equiment vibrating isolation system |
| CN113984194A (en) * | 2021-10-29 | 2022-01-28 | 西南交通大学 | Cable-stay bridge cable vibration monitoring devices and system |
-
2013
- 2013-04-03 CN CN 201320164987 patent/CN203202108U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291803A (en) * | 2013-04-03 | 2013-09-11 | 华中科技大学 | Damping force controllable viscous damper and intelligent monitoring and control system of damping force controllable viscous damper |
| CN103291803B (en) * | 2013-04-03 | 2015-06-17 | 华中科技大学 | Damping force controllable viscous damper and intelligent monitoring and control system of damping force controllable viscous damper |
| CN104154160A (en) * | 2014-08-11 | 2014-11-19 | 浙江建科减震科技有限公司 | Self-resetting viscous damper |
| CN104154160B (en) * | 2014-08-11 | 2017-01-11 | 浙江建科减震科技有限公司 | Self-resetting viscous damper |
| CN106090440A (en) * | 2016-06-16 | 2016-11-09 | 清华大学 | One kind firm supporting damping framework |
| CN108386050A (en) * | 2018-04-27 | 2018-08-10 | 南京林业大学 | A kind of pressure controllable type fluid linking damper |
| CN109723755A (en) * | 2018-12-10 | 2019-05-07 | 北京矿冶科技集团有限公司 | Mining equiment vibrating isolation system |
| CN113984194A (en) * | 2021-10-29 | 2022-01-28 | 西南交通大学 | Cable-stay bridge cable vibration monitoring devices and system |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20140403 |