CN206832399U - The anemometry of transmission tower model - Google Patents
The anemometry of transmission tower model Download PDFInfo
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- CN206832399U CN206832399U CN201720357687.3U CN201720357687U CN206832399U CN 206832399 U CN206832399 U CN 206832399U CN 201720357687 U CN201720357687 U CN 201720357687U CN 206832399 U CN206832399 U CN 206832399U
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Abstract
A kind of anemometry of transmission tower model is the utility model is related to, including for placing the measuring cylinder of transmission tower model, the foil gauge being pasted onto on measuring cylinder barrel and the strain analysis instrument being connected with foil gauge；Measuring cylinder is placed longitudinally, make one end of measuring cylinder upward, transmission tower model is placed on the end, strain analysis instrument gathers the strain Value Data of foil gauge, according to the change of the strain value of the foil gauge before and after the corresponding relation and application wind-force of model stress and the strain value of foil gauge, the size for the wind-force that acquisition model is subject to.The utility model mainly measures the wind-force that transmission tower model is subject to by the foil gauge in measuring cylinder, measuring cylinder can be according to the concrete shape designed size of transmission tower model, measured suitable for the wind-force for the complicated transmission tower model that volume is big, quality is heavy, and measurement process is simple, it is easy to accomplish.
Description
Technical field
Electric power pylon detection technique field is the utility model is related to, is surveyed more particularly to a kind of wind-force of transmission tower model
Measure device.
Background technology
In recent years, the problem of electric power pylon is by typhoon influence is paid close attention to by everybody, and coastal area is caused by typhoon
The Frequent Accidents of falling tower, the stable operation of power network is had a strong impact on.Therefore electric power pylon wind force proofing design research and wind hazard prevention are carried out
Study on Measures, the appearance of security, reduction electric power pylon collapse accident of the electric power pylon under high wind hazard weather is improved, is ensured
The reliability of power supply is extremely urgent.
Wind tunnel test simulation wind flow field, design are generally utilized in the practical engineering applications such as building, structure and bridge at present
Corresponding wind tunnel model carries out correlation test research.Due to the limitation of wind tunnel experiment chamber size, corresponding object construction in experiment
Using contracting scale model, that is, contract than elastic wind tunnel model, and wind-force measurement is carried out to it using precision balance, utilize precision balance
The right and left imbalance difference determines twisting resistance that model is subject to.
But the range of precision balance and finite capacity, the segmentation for big, quality weight the labyrinth use of volume are complete
Dimension model, precision balance can not be used to carry out wind-force measurement.
Utility model content
Based on this, it is necessary to for traditional electric power pylon model in wind tunnel wind-force measuring method is big to volume, matter
A kind of the problem of complicated transmission tower model of amount weight can not carry out wind-force measurement, there is provided the wind-force measurement dress of transmission tower model
Put.
A kind of anemometry of transmission tower model, including measuring cylinder, foil gauge and strain analysis instrument；
Measuring cylinder is longitudinally disposed during measurement, and one end of measuring cylinder is used to place transmission tower model；
Strain gauge adhesion is connected on the barrel of measuring cylinder, and with strain analysis instrument；
When foil gauge is for there is wind-force and without wind-force, answering for measuring cylinder is measured under the conditions of transmission tower model is placed
Become, strain analysis instrument is used for the dependent variable data for gathering foil gauge.
According to the anemometry of above-mentioned transmission tower model, it includes being used for the measurement for placing transmission tower model
Cylinder, the foil gauge being pasted onto on measuring cylinder barrel and the strain analysis instrument being connected with foil gauge；During specific implementation, measurement
Cylinder is placed longitudinally, and the one end for making measuring cylinder upward, transmission tower model is placed on the end, keep level, makees without wind-force
Used time, foil gauge have corresponding initial strain value ε0；When there is wind-force effect, foil gauge has corresponding test strain value ε1.It is and preceding
Strain value difference (Δ ε=ε afterwards1-ε0) be by the wind-force zone of action being subject to Lai, strain analysis instrument gather foil gauge strain value
Data, according to the corresponding relation of the strain value of the stress and strain piece of foil gauge, the size for the wind-force that acquisition model is subject to, and
The distribution situation for the wind-force that transmission tower model is subject to can also be obtained according to the situation of change of strain value difference.The utility model master
If measuring the wind-force that transmission tower model is subject to by the foil gauge in measuring cylinder, measuring cylinder can be according to electric power pylon mould
The concrete shape designed size of type, measure, and measure suitable for the wind-force for the complicated transmission tower model that volume is big, quality is heavy
Process is simple, it is easy to accomplish.
Brief description of the drawings
Fig. 1 is the structural representation of the anemometry of the transmission tower model of one of embodiment；
Fig. 2 is the structural representation of the anemometry of the transmission tower model of one of embodiment；
Fig. 3 is the structural representation of the anemometry of the transmission tower model of one of embodiment；
Fig. 4 is the structural representation of the anemometry of the transmission tower model of one of embodiment；
Fig. 5 is the part-structure schematic diagram of the anemometry of the transmission tower model of one of embodiment；
Fig. 6 is the structural representation of the anemometry of the transmission tower model of one of embodiment；
Fig. 7 is the structural representation of the anemometry of the transmission tower model of one of specific embodiment；
Fig. 8 is that the anemometry wind-force of the transmission tower model of one of specific embodiment calculates schematic diagram.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, below in conjunction with drawings and Examples,
The utility model is described in further detail.It should be appreciated that embodiment described herein is only solving
The utility model is released, does not limit the scope of protection of the utility model.
It is shown in Figure 1, it is the structural representation of the anemometry of the transmission tower model of the utility model embodiment
Figure.The anemometry of transmission tower model in the embodiment, including measuring cylinder 100, foil gauge 200 and strain analysis instrument
300；
Measuring cylinder 100 is longitudinally disposed during measurement, and one end of measuring cylinder 100 is used to place transmission tower model；
Foil gauge 200 is pasted onto on the barrel of measuring cylinder 100, and is connected with strain analysis instrument 300；
When foil gauge 200 is for there is wind-force and without wind-force, measuring cylinder is measured under the conditions of transmission tower model is placed
Strain, strain analysis instrument 300 are used for the dependent variable data for gathering foil gauge.
In the present embodiment, the anemometry of transmission tower model, it includes being used to place transmission tower model
Measuring cylinder, the foil gauge being pasted onto on measuring cylinder barrel and the strain analysis instrument being connected with foil gauge；During specific implementation,
Measuring cylinder is placed longitudinally, and the one end for making measuring cylinder upward, transmission tower model is placed on the end, keep level, without wind
Masterpiece used time, foil gauge have corresponding initial strain value ε0；When there is wind-force effect, foil gauge has corresponding test strain value ε1。
And front and rear strain value difference (Δ ε=ε1-ε0) be the wind-force zone of action that is subject to by transmission tower model Lai, strain analysis instrument is adopted
Collect the strain Value Data of foil gauge, according to the corresponding relation of the strain value of the stress and strain piece of foil gauge, obtain electric power pylon
The size for the wind-force that model is subject to, and the wind that transmission tower model is subject to can also be obtained according to the situation of change of strain value difference
The distribution situation of power.The utility model mainly measures the wind that transmission tower model is subject to by the foil gauge in measuring cylinder
Power, measuring cylinder can be according to the concrete shape designed sizes of transmission tower model, suitable for the complicated transmission of electricity that volume is big, quality is heavy
The wind-force measurement of iron tower model, and measurement process is simple, it is easy to accomplish.
In one of the embodiments, as shown in Fig. 2 foil gauge 200 includes transverse strain piece 210 and longitudinal strain piece
220；
Longitudinal strain piece 210 and the diameter parallel of measuring cylinder 100, transverse strain piece 220 and the axis of measuring cylinder 100 hang down
Directly.
In the present embodiment, foil gauge 200 includes transverse strain piece 210 and longitudinal strain piece 220, can measure respectively
The horizontal and vertical strain of graduated cylinder 100, the wind-force for the different directions that transmission tower model is subject to can be not only tested, and respectively
By transverse strain and longitudinal strain measure can measurement result it is more accurate.
In one of the embodiments, as shown in figure 3, transverse strain piece 210 and longitudinal strain piece 220 connect, formed double
90 degree of foil gauges of axle.
In the present embodiment, transverse strain piece 210 and longitudinal strain piece 220 form 90 degree of foil gauges of twin shaft, can survey
The measurement that the same position of the barrel of graduated cylinder 100 is strained to it, embodies a concentrated reflection of the change of stress, further improves measurement result
Accuracy.
In one of the embodiments, as shown in figure 4, foil gauge 200 also includes strain substrate 230；
Strain substrate 230 is affixed directly on the barrel of measuring cylinder 100, and transverse strain piece 210 and longitudinal strain piece 220 are equal
It is arranged in strain substrate 230；
Transverse strain piece 210, longitudinal strain piece 220 are identical with the strain property of strain substrate 230.
In the present embodiment, it is identical with the strain property of transverse strain piece 210, longitudinal strain piece 220 to strain substrate 230,
Dependent variable under identical stress is identical, and strain substrate 230 is affixed directly on the barrel of measuring cylinder 100, transverse strain piece 210
It is arranged at longitudinal strain piece 220 in strain substrate 230, transverse strain piece 210 and longitudinal strain piece 220 can't be influenceed
Test performance, and substrate 230 is strained with the contact area of the barrel of measuring cylinder 100 than transverse strain piece 210 and longitudinal strain
Piece 220 it is big, the barrel of measuring cylinder 100 is arranged on by straining substrate 230 by transverse strain piece 210 and longitudinal strain piece 220
On, stability is more preferable.
In one of the embodiments, foil gauge 200 is multiple to be evenly distributed on the barrel of measuring cylinder 100.
In the present embodiment, multiple foil gauges can be set, and be evenly distributed on the barrel of measuring cylinder, so as to
Than the strain for more fully measuring measuring cylinder 100, the local train of only measurement measuring cylinder 100 is avoided to influence the accuracy of measurement.
In one of the embodiments, as shown in figure 5, foil gauge 200 is four, four foil gauges 200 and measuring cylinder 100
One end bottom surface distance it is identical, and the angle that the vertical line of two neighboring foil gauge 200 and the axis of measuring cylinder 100 is formed is
90 degree.
In the present embodiment, the angle that the vertical line of two neighboring foil gauge 200 and the axis of measuring cylinder 100 is formed is 90
Degree, only four foil gauges 200 are needed just to be enough comprehensively to measure the measuring cylinder dependent variable of 100 1 weeks, and the quantity of foil gauge
Will not be excessive, also avoid increase to calculate the complexity of wind-force process while measurement cost is reduced.
In one of the embodiments, foil gauge 200 is pasted onto the inner tube wall of measuring cylinder 100.
In the present embodiment, foil gauge 200 is pasted onto on the inner tube wall of measuring cylinder 100, wind-force pair when can eliminate measurement
The influence of foil gauge in itself, further improve the accuracy of measurement.
In one of the embodiments, measuring cylinder 100 is cylinder.
In the present embodiment, cylindric measuring cylinder is advantageous to gather the stress of all directions, so as to be advantageous to iron of transmitting electricity
The wind-force measurement of tower model.
In one of the embodiments, measuring cylinder 100 is I-shaped cylinder.
In the present embodiment, I-shaped cylindric measuring cylinder is advantageous to gather the stress of all directions, so as to be advantageous to
The wind-force measurement of transmission tower model, and the bottom area of I-shaped cylinder is more than in general bottom of cylinder area, is easy to put
Put the larger transmission tower model of volume.
Optionally, the material of measuring cylinder 100 is stainless steel, and the relation between the stress and strain of stainless steel is relatively stable.
In one of the embodiments, as shown in fig. 6, the anemometry of transmission tower model also includes data processing
Terminal 400, data processing terminal 400 are connected with strain analysis instrument 300.
In the present embodiment, strain analysis instrument 300 is connected with data processing terminal 400, is answered what strain analysis instrument gathered
The strain data for becoming piece is transmitted to data processing terminal 400, and data processing terminal 400 is according to the stress and strain of foil gauge 300
Corresponding relation, handled to obtain the size of stress by the strain data of foil gauge, and then obtain the wind that transmission tower model is subject to
Power size.
In a specific embodiment, the anemometry of transmission tower model can be to the wind tunnel test of electric power pylon
Model carries out wind-force measurement.
As shown in fig. 7, measuring cylinder is I-shaped cylinder, cylinder upper and lower ends are not closed, on cylinder barrel and the bottom of parallel to
The intersecting position of the plane in face posts one group of foil gauge every 90 degree, and every group of foil gauge is biaxial strain piece, totally 4 groups, including is answered
Become piece 8, wherein 4 transverse strain pieces, for measuring transverse strain；4 longitudinal strain pieces, for measuring longitudinal strain.
Electric power pylon wind tunnel model is placed on the upper end disc of I-shaped cylinder, and when being acted on without wind-force, foil gauge has phase
The initial strain value ε answered0；When there is wind-force effect, foil gauge has corresponding initial strain value ε1.And front and rear strain value difference (Δ
ε=ε1-ε0) by the wind-force zone of action that is subject to Lai；Apply wind-force above measuring cylinder and transmission tower model, can so make
Measuring cylinder produces effective strain；
Strain analysis instrument gathers foil gauge strain value by data line, handles, will locate by simple error compensation
Strain value difference data after reason is preserved；
Strain analysis instrument is also connected with data processing terminal, and data processing terminal is according to the stress and strain piece of foil gauge
The corresponding relation of strain value, the size for the wind-force that transmission tower model is subject to is obtained, and according to the situation of change of strain value difference
The distribution situation for the wind-force that transmission tower model is subject to can also be obtained.Data processing terminal can be terminal or list
Piece machine etc..
Measuring cylinder can also use other shapes, such as cube, and the wind-force computational methods taken different shapes should
It is different.I-shaped this shape of cylinder is advantageous to gather the stress of all directions, and cylinder material can be stainless steel material.
As shown in figure 8, according to the synthesis of power, can obtain：
Longitudinal force：
Cross force：
WhereinRefer to the longitudinal stress and lateral stress of foil gauge 1 respectively；Refer to foil gauge 2 respectively
Longitudinal stress and lateral stress；Refer to the longitudinal stress and lateral stress of foil gauge 3 respectively；Point
Do not refer to the longitudinal stress and lateral stress of foil gauge 4.
It is hereby achieved that model is by wind-force
The corresponding relation of the strain value of the stress and strain piece of foil gauge can be obtained by coefficient correction experiment.
Different size of power F is applied to I-shaped cylinder using hydraulic test, foil gauge can occur to strain accordingly, by answering
Become analyzer measurement and obtain corresponding strain value ε, obtain the relation F=K ε of strain value and stress (ε is foil gauge strain value).Obtain
Strain value corresponding to multigroup different power is taken, the uphill process from zero to the power F of certain value is tested, then from certain force F to zero
Decline process tested, so repeat test of many times.Test to obtain the pass of stress and strain value by coefficient correction
It is f=k Δ ε=k (ε1-ε0), generally take ε0=0, then have：fi=kiε (4)
The result of the test of the power of same size is averaged, to reduce error.
When wind-force is acted on wind tunnel model, deformeter collects corresponding strain value ε, and the strain value is multiplied by accordingly
Strain value coefficient ki, the longitudinal force and cross force of foil gauge can be obtained, further according to power composition principle can obtain model by
The wind-force arrived.
Wind-force can be produced by wind tunnel laboratory, and laboratory includes power section, diffuser, contraction section, test section and steady
Determine section, cause surrounding air flowing to produce by large scale wind rotation, in the spatial flow of closing, just produce wind.Wind acts on
When on model, according to pressure, area and stress relation：F=P*S, wherein P are atmospheric pressures, S model front face areas, are passed through
Change power section rotating speed, change gas pressure intensity, and then change the purpose of model stress.
In above-mentioned each embodiment, the tester of the anemometry of transmission tower model is merely illustrated
Processing procedure is calculated, but the utility model is not rely on above-mentioned calculation processes, can just make when testing barrel shape difference
With different calculation processes, the wind-force measurement of transmission tower model can be equally realized, utilizes above-mentioned measuring cylinder, strain
Piece, strain analysis instrument and its annexation, it is possible to realize function of the present utility model, data processing terminal can have, also may be used
Not have, data processing terminal realizes that the calculating to data is handled and shown, integrated data can be handled in strain analysis instrument
Terminal, in the case of no data processing terminal, the data that can also correspond to change analyzer are manually calculated.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
- A kind of 1. anemometry of transmission tower model, it is characterised in that including measuring cylinder (100), foil gauge (200) and Strain analysis instrument (300)；The measuring cylinder (100) is longitudinally disposed during measurement, and one end of the measuring cylinder (100) is used to place transmission tower model；The foil gauge (200) is pasted onto on the barrel of the measuring cylinder (100), and is connected with the strain analysis instrument (300)；When the foil gauge (200) is for there is wind-force and without wind-force, institute is measured under the conditions of the transmission tower model is placed The strain of measuring cylinder (100) is stated, strain analysis (300) instrument is used for the dependent variable data for gathering the foil gauge (200).
- 2. the anemometry of transmission tower model according to claim 1, it is characterised in that the foil gauge (200) transverse strain piece (210) and longitudinal strain piece (220) are included；The diameter parallel of the longitudinal strain piece (210) and the measuring cylinder (100), the transverse strain piece (220) with it is described The axis of measuring cylinder (100) is vertical.
- 3. the anemometry of transmission tower model according to claim 2, it is characterised in that the transverse strain piece (210) connected with longitudinal strain piece (220), form 90 degree of foil gauges of twin shaft.
- 4. the anemometry of transmission tower model according to claim 2, it is characterised in that the foil gauge (200) strain substrate (230) is also included；It is described strain substrate (230) be affixed directly on the barrel of the measuring cylinder (100), the transverse strain piece (210) and The longitudinal strain piece (220) is arranged on the strain substrate (230)；The transverse strain piece (210), the longitudinal strain piece (220) are identical with the strain property of the strain substrate (230).
- 5. the anemometry of transmission tower model according to claim 1, it is characterised in that the foil gauge (200) it is multiple, is evenly distributed on the barrel of the measuring cylinder (100).
- 6. the anemometry of transmission tower model according to claim 5, it is characterised in that the foil gauge (200) it is four, four foil gauges (200) are identical with the distance of one end bottom surface of the measuring cylinder (100), and adjacent two The angle that the vertical line of individual foil gauge (200) and the axis of the measuring cylinder (100) is formed is 90 degree.
- 7. the anemometry of transmission tower model according to claim 1, it is characterised in that the foil gauge (200) it is pasted onto the inner tube wall of the measuring cylinder (100).
- 8. the anemometry of transmission tower model according to claim 1, it is characterised in that the measuring cylinder (100) it is cylinder.
- 9. the anemometry of transmission tower model according to claim 1, it is characterised in that the measuring cylinder (100) it is I-shaped cylinder.
- 10. the anemometry of transmission tower model as claimed in any of claims 1 to 9, it is characterised in that Also include data processing terminal (400), the data processing terminal (400) is connected with the strain analysis instrument (300).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720357687.3U CN206832399U (en) | 2017-04-06 | 2017-04-06 | The anemometry of transmission tower model |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101800A (en) * | 2017-04-06 | 2017-08-29 | 广东电网有限责任公司东莞供电局 | The wind-force measuring apparatus and its measuring method of transmission tower model |
| CN111948576A (en) * | 2020-08-05 | 2020-11-17 | 国网河北省电力有限公司沧州供电分公司 | Line monitoring equipment based on GIM |
| CN112033844A (en) * | 2020-07-28 | 2020-12-04 | 成都飞机工业（集团）有限责任公司 | Multi-working-condition simulated aircraft wire harness abrasion experimental equipment and experimental method |
-
2017
- 2017-04-06 CN CN201720357687.3U patent/CN206832399U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101800A (en) * | 2017-04-06 | 2017-08-29 | 广东电网有限责任公司东莞供电局 | The wind-force measuring apparatus and its measuring method of transmission tower model |
| CN107101800B (en) * | 2017-04-06 | 2020-04-21 | 广东电网有限责任公司东莞供电局 | Wind power measuring equipment and method for power transmission iron tower model |
| CN112033844A (en) * | 2020-07-28 | 2020-12-04 | 成都飞机工业（集团）有限责任公司 | Multi-working-condition simulated aircraft wire harness abrasion experimental equipment and experimental method |
| CN111948576A (en) * | 2020-08-05 | 2020-11-17 | 国网河北省电力有限公司沧州供电分公司 | Line monitoring equipment based on GIM |
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