CN104599568A - Wind and rain vibration simulation experiment device for transmission conductor - Google Patents

Wind and rain vibration simulation experiment device for transmission conductor Download PDF

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Publication number
CN104599568A
CN104599568A CN201410743206.3A CN201410743206A CN104599568A CN 104599568 A CN104599568 A CN 104599568A CN 201410743206 A CN201410743206 A CN 201410743206A CN 104599568 A CN104599568 A CN 104599568A
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CN
China
Prior art keywords
wind
conductor
frame
rain
vibration
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Application number
CN201410743206.3A
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Chinese (zh)
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CN104599568B (en
Inventor
周超
孟超
刘衍平
李力
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华北电力大学
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Priority to CN201410743206.3A priority Critical patent/CN104599568B/en
Publication of CN104599568A publication Critical patent/CN104599568A/en
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Publication of CN104599568B publication Critical patent/CN104599568B/en

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
    • G09B23/188Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution

Abstract

The invention discloses a wind and rain vibration simulation experiment device for a transmission conductor. The device is used for researching wind and rain vibration possibly induced by the wind and rain coupling function of the transmission conductor and comprises a test bench body structure, a rainfall simulation device, a wind speed simulation system, a conductor frame structure and a conductor position adjusting and testing device. A sprayer of the rainfall simulation device can horizontally move along with a pipeline support to adjust the distance between the sprayer and an air outlet. A device water source comes from a water tank and is supplied by a side water pump. Rainfall simulated by the sprayer passes a diversion trench and then is recovered to a water tank, so that water is recycled. A conductor frame is arranged on two sides of a middle experiment area, has two height adjustment stages and comprises a support, a rough adjustment screw and a fine adjustment screw, the rough adjustment screw and the fine adjustment screw are arranged at the joint of the support and the base, and the transmission conductor is hung in a rectangular frame of the conductor frame through a spring. In addition, a pressure sensor, a displacement sensor, a speed sensor and an acceleration sensor are arranged at two ends of the transmission conductor respectively and used for measuring aerodynamic coefficient, vibration displacement, displacement speed and acceleration.

Description

A kind of transmission pressure wind and rain causes the analogue experiment installation that shakes

Technical field

The invention provides one and cause the analogue experiment installation that shakes, particularly a kind of transmission pressure wind and rain causes the analogue experiment installation that shakes.

Background technology

Along with the development of power industry, high pressure, the scale gradually of UHV transmission network, intellectuality, this makes transmission of electricity tower-line system generation great variety, mainly presents the problems such as tower bar is towering, conductor cross-section is thick.This makes tower line system flexible characteristic more highlight, and is vulnerable to external load impact.In the environment that UHV transmission wire is coupled at wind and rain, repeatedly present significantly oscillation phenomenon.Domestic and international minority scholar has carried out studying targetedly, finds that it brings out mechanism and may cause transmission pressure aerodynamic force unstability for wind and rain.The safe and stable operation of this significantly oscillation phenomenon serious threat transmission line of electricity is be about to the UHV transmission line engineering built one large hidden danger.And the domestic wind and rain that there is no for a kind of transmission pressure causes the related experiment equipment that jolt ramming is tested.Therefore, bringing out mechanism for disclosing it, being necessary that building transmission pressure wind and rain causes the analogue experiment installation that shakes.

Summary of the invention

The object of this invention is to provide a kind of simulation transmission pressure wind and rain and cause jolt ramming experiment device.It can high wind, rainfall, gentle breeze is rainy, the various working such as the rainy and high wind of apoplexy is rainy.Under various working, aerodynamic coefficient, vibration amplitude, speed and acceleration in the face being measured transmission pressure by displacement transducer, pressure transducer and acceleration transducer etc., and the out-of-plane vibration aerodynamic coefficient of transmission pressure, vibration amplitude, speed and acceleration can be measured as required.

For achieving the above object, the present invention takes four groups of mechanisms: circulation rainfall system realizes recycling rainwater, saving water resource, and can test away from water source; Directed wind system provides stable directed wind; Scaleplate structure can show the lateral slip angle of transmission pressure, ensures that rainwater can not splash test block simultaneously; Lead frame is that transmission pressure and sensor provide support, and its height adjustable, can complete the fore-and-aft tilt of wire.

The present invention, owing to taking technique scheme, has the following advantages:

1. experiment table compact overall structure, floor area is 7m only 2left and right;

2. have independently rain cycle system, can test away from water source, semi-closed structure makes water circulation loss greatly reduce;

3. flow field afterbody is open, prevents interference wake effect aerodynamic parameter;

4. lead location and move towards adjustable within the specific limits, meets the different angle of attack and angle of wind deflection requirement;

5. lead frame is provided with transverse vibration extending bore, and easily extensible measures transverse vibration simultaneously.

Accompanying drawing explanation

Fig. 1 is that transmission pressure wind and rain causes the experiment table schematic diagram that shakes.

Fig. 2 is wire limit wind inclined angle β position view.

Fig. 3 is wire limit inclination alpha position view.

Fig. 4 is simulation wind speed system schematic.

Wherein, 1 is air duct, 2 is blower fan, 3 is wind speed adjustment frequency conversion box, 4 is rainfall regulating box, 5 is fanman's station, 6 is lead frame support, 7 is spring, 8 is lead frame coarse adjustment screw, 9 is lead frame base, 10 is rainfall frame, 11 is gutter worktable, 12 is air-out oralia, 13 is water inlet pipe, 14 is tank, 15 is inlet air oralia, 16 is wire, 17 is GB_M5-S screw, 18 is turning locking pin, 19 side subplates, 20 is scaleplate, 21 is GB_M6-S screw, 22 is side mainboard, 23 is gutter, 24 is water pump, 25 is fanman's station, 26 is blower fan, 27 is wind speed adjustment frequency conversion box, 28 is rainfall regulating box, 29 is air duct.

Embodiment

By reference to the accompanying drawings each structure of the present invention is described in detail.

1. lead frame mechanism: be made up of lead frame support [6], spring [7], lead frame coarse adjustment screw [8], lead frame base [9], fine adjustment screw (M6-S) [21] and wire.Lead frame base is connected with lead frame support, by lead frame coarse adjustment screws clamp, can unclamp, tighten after adjustment during coarse height.Wire pulls the middle part to lead frame rectangle support by its upper and lower two springs, can do free vibration.Be connected with lead frame support by fine adjustment screw above high-order spring, adjust high-order spring tension by rotary fine adjustment joint screw, thus fine setting conductor height.

2. scaleplate structure: be made up of scaleplate [20] and side mainboard [22].Beat slightness hole in the middle part of scaleplate, pass in order to wire, there is scale on limit, hole, can refer to reading during adjustment wire inclination angle; Scaleplate can transfer to slide on the mainboard of side with wire horizontal rotary, and sliding distance can be read, in order to calculate angle of wind deflection by the scale value near the mainboard sliding pair of side.

3. simulate wind speed system: regulate frequency conversion box [3] and fanman's station [5] to form by air duct [1], blower fan [2], wind speed.Blower fan is fixed in fanman's station, and table surface reserves the groove of two governing boxs by cabinet door place, is used for placing wind speed and regulates frequency conversion box and rainfall regulating box.Air duct is connected with blower fan, and air duct ensures homogeneity and the stability of wind.During experiment, wind is blown into test block by air duct, and wind speed is regulated by regulating box.

4. rain cycle system: be made up of rainfall frame [10], gutter worktable [11], water inlet pipe [13], tank [14], gutter [23] and water pump [24].Rainfall frame top is provided with shower nozzle needed for rainfall, support body hollow, directly can make conduit and use; It is connected with exit of pump by flexible pipe.Gutter is arranged on gutter worktable, and middle part dimpling goes out, and ensures that rainfall can be taken advantage of a situation and slips in the groove of limit, and flow out from the outlet of gutter afterbody.Tank is positioned at below the afterbody of gutter, for accepting the rainfall of outflow gutter and storing it, in order to cycling and reutilization.

Be described in detail below in conjunction with accompanying drawing with to experiment flow of the present invention:

1. fixing cord: with reference to the accompanying drawings 1, wire [16] is through both sides scaleplate [20], and two ends are fixed on lead frame support [6] middle part by 4 springs [7];

2. adjust lead location:

A) horizontal adjustment: movable conducting wire frame base [9] adjustable angle of wind deflection β as shown in Figure 2, simultaneously scaleplate [20] moves to correct position with conductor flat and fixes, and in reading both sides, scaleplate sliding pair position side-play amount, thus can determine β angle;

B) height control: adjustment coarse adjustment screw [8] and fine adjustment screw (M6-S screw) [21] regulate the inclination alpha of wire as shown in Figure 3 respectively sequentially, and its reading can read according to the scale of scaleplate strip through hole;

3. regulating wind speed: putting in blast after blower fan [2] energising, by regulating the frequency conversion box [3] on fanman's station [5] to change blower fan [2] rotating speed, thus changing air quantity and wind speed;

4. adjustment rainfall: after energising, water pump [24] starts draw water from tank [14] and send into rainfall frame [10].Regulate the rainfall regulating box [4] on fanman's station [5], the rotating speed of water pump [24] can be changed, thus regulate rainfall amount.

Claims (4)

1. a transmission pressure wind and rain causes the analogue experiment installation that shakes, comprise testing table agent structure, simulated rainfall system, simulation wind speed system, conducting wire frame structure and acquisition system, it is characterized in that: complete circulation rainer, comprise water pump, tank, shower nozzle, conduit pipeline, tank limit, rear, test site settled by described water pump, is connected with flexible pipe with conduit pipeline; Conducting wire frame structure, comprises thick, thin tuning screw, base and support; Testing table main body, comprise diversion trench, movable weather shield, described diversion trench is arranged on pilot region lower end, comprises edge water diversion part, and described weather shield is arranged on middle part, pilot region both sides, is connected with peripheral enclosure wall, can do horizontal shift; Vibration of power transmission line proving installation, described device is arranged on lead frame, is connected with wire.
2. rain cycle system according to claim 1, is characterized in that: weather shield is connected with peripheral enclosure wall, can be free to slide, conveniently regulate lead location, and middle part strip through hole is that oscillation space reserved by wire.
3. conducting wire frame structure according to claim 1, is characterized in that: lead frame is provided with two-stage height and regulates, and comprises the thick bar screw of support and base junction and the micrometer adjusting screw of cradle top; Transmission pressure hangs in the rectangle frame of lead frame through spring.
4. vibration of power transmission line proving installation according to claim 1, it is characterized in that: pressure, displacement, speed and acceleration transducer are placed in the two ends of transmission pressure respectively, in order to measure aerodynamic coefficient, vibration displacement, velocity of displacement and acceleration.
CN201410743206.3A 2014-12-08 2014-12-08 A kind of transmission pressure wind and rain causes the analogue experiment installation that shakes CN104599568B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410743206.3A CN104599568B (en) 2014-12-08 2014-12-08 A kind of transmission pressure wind and rain causes the analogue experiment installation that shakes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410743206.3A CN104599568B (en) 2014-12-08 2014-12-08 A kind of transmission pressure wind and rain causes the analogue experiment installation that shakes

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CN104599568A true CN104599568A (en) 2015-05-06
CN104599568B CN104599568B (en) 2017-06-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104964808A (en) * 2015-07-02 2015-10-07 华北电力大学 Method for calculating unsteady aerodynamic coefficient of wind and rain induced vibration of power transmission line
CN104991147A (en) * 2015-07-21 2015-10-21 浙江康宇电缆有限公司 Cable test device
CN105068449A (en) * 2015-08-20 2015-11-18 国网山东省电力公司烟台供电公司 Numerical control swinging experimental device of overhead transmission line
CN109443687A (en) * 2018-10-30 2019-03-08 重庆大学 A kind of wind-induced vibration energy absorbing device of the freely adjustable wind angle of attack and wind angle

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JP3662830B2 (en) * 2000-07-04 2005-06-22 昌子 野村 tent
CN202014073U (en) * 2011-03-30 2011-10-19 河南省电力公司济源供电公司 Vibration-reducing connecting part of overhead electric wire
CN202720155U (en) * 2012-08-07 2013-02-06 惠州住成电装有限公司 Auxiliary device for wire vibration test
CN203433701U (en) * 2013-04-03 2014-02-12 华北电力大学(保定) Closed-type conductor erosion simulation device
CN104050860A (en) * 2014-05-28 2014-09-17 河海大学 Cable rope wind and rain excitation function simulation experiment device

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JP3662830B2 (en) * 2000-07-04 2005-06-22 昌子 野村 tent
CN202014073U (en) * 2011-03-30 2011-10-19 河南省电力公司济源供电公司 Vibration-reducing connecting part of overhead electric wire
CN202720155U (en) * 2012-08-07 2013-02-06 惠州住成电装有限公司 Auxiliary device for wire vibration test
CN203433701U (en) * 2013-04-03 2014-02-12 华北电力大学(保定) Closed-type conductor erosion simulation device
CN104050860A (en) * 2014-05-28 2014-09-17 河海大学 Cable rope wind and rain excitation function simulation experiment device

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高压输电线风雨激振特性研究及数值分析;周超 等;《振动与冲击》;20131231;第32卷(第6期);第173-175页 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104964808A (en) * 2015-07-02 2015-10-07 华北电力大学 Method for calculating unsteady aerodynamic coefficient of wind and rain induced vibration of power transmission line
CN104991147A (en) * 2015-07-21 2015-10-21 浙江康宇电缆有限公司 Cable test device
CN104991147B (en) * 2015-07-21 2017-10-27 浙江康宇电缆有限公司 Cable testing apparatus
CN105068449A (en) * 2015-08-20 2015-11-18 国网山东省电力公司烟台供电公司 Numerical control swinging experimental device of overhead transmission line
CN105068449B (en) * 2015-08-20 2017-07-07 国网山东省电力公司烟台供电公司 Experimental provision is waved in a kind of overhead transmission line numerical control
CN109443687A (en) * 2018-10-30 2019-03-08 重庆大学 A kind of wind-induced vibration energy absorbing device of the freely adjustable wind angle of attack and wind angle

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