CN105300334A - Transmission line icing thickness measuring device - Google Patents
Transmission line icing thickness measuring device Download PDFInfo
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- CN105300334A CN105300334A CN201510779544.7A CN201510779544A CN105300334A CN 105300334 A CN105300334 A CN 105300334A CN 201510779544 A CN201510779544 A CN 201510779544A CN 105300334 A CN105300334 A CN 105300334A
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- transmission line
- power transmission
- support bar
- icing
- housing
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Abstract
A monitoring and measuring device for icing of a transmission line comprises a fixing base plate, a fixing base or wheel, an optical path prolonging device, a monitoring device set, a monitoring device set pallet, a first supporting rod, an optical detector, an optical detector pallet, an elevating supporting rod and a computer.
Description
Technical field
The present invention relates to a kind of monitoring and thickness measure of ice covering on transmission lines, belong to the power transmission and distribution field of electric power.
Background technology
Power transmission line in the winter time time there will be icing phenomenon, this is called optical imaging, after freezing the harm that produces mainly comprise following some: 1) damage shaft tower.Line ice coating is blocked up, and the loading of shaft tower machinery can be made more to carry and fracture; 2) line tripping.For the circuit of wire homeotropic alignment, when the icing instantly on layer conductor first comes off (icing on wire not necessarily comes off simultaneously), wire will rise rapidly or upper and lower jump, causes phase fault, line switching is tripped, power failure; 3) insulator chain tilts, wire is seriously sagging.When ice covering thickness in each span of circuit is uneven, conducting wire sag will great changes will take place, and cause suspension insulator to tilt, gold utensil bears larger horizontal direction acting force.In the span that icing is blocked up, wire can be caused seriously sagging and ground fault occurs; 4), after insulator chain icing, greatly insulating property can be reduced.When suspension insulator icing dissolves, may icicle be formed, make insulator chain short circuit, cause ground fault.So after power transmission line appearance is frozen, should remove icing in time, to avoid the generation of above-mentioned situation, the judgement for icing mainly comprises 2 points, be exactly a bit want freezing of Timeliness coverage power transmission line, accurately will measure the thickness of icing layer more exactly.The ubiquitous problem of prior art is exactly judge to be forbidden for ice covering thickness; there is time error also very large; judgement often can be caused to make a fault; thus causing the error in decision-making. the present invention puts forward for this problem just, and object is just to provide a kind of device and method accurately can measuring transmission line icing thickness.
Summary of the invention
According to one embodiment of the invention, provide a kind of transmission line icing thickness measurement mechanism, it is characterized in that: comprise hollow housing, this housing comprises bottom surface, is positioned at the upper side wall of bottom surface, and is positioned at the top cover on sidewall; The weighing scale be positioned on bottom surface is comprised in hollow housing inside, the top of this weighing scale and this weighing scale are connected with conical hopper, the liftable support bar being provided with and being positioned on bottom surface is close in the both sides of conical hopper and the outermost edges of conical hopper, liftable support bar is two, power transmission line is connected between two liftable support bars, the length of power transmission line is a bit larger tham the spacing between two liftable support bars, to make power transmission line be installed to after between described support bar, the height in the middle of power transmission line is not higher than the height of two ends supporting bar top; The top cover of housing is made up of two symmetrical half top covers, on each half top cover, the position corresponding with support bar is provided with half recess, the diameter of half recess is a bit larger tham the size of support bar, and two symmetrical half top covers can move forward docking closure casing and open the space of exposing enclosure interior respectively towards rear movement; Like this, after two symmetrical half top cover docking, half recess docking formation one of two and half top covers is just by the whole recess of support bar; Described enclosure interior also has well heater, is converted into water for being melted by the icing on power transmission line.
According to one embodiment of the invention, the shape of described housing is rectangular parallelepiped or right cylinder.
According to one embodiment of the invention, described well heater is arranged on described sidewall.
According to one embodiment of the invention, after described support bar rises, the height on top is higher than described top cover at least 10cm.
According to one embodiment of the invention, described power transmission line is installed to after between support bar, and the height in the middle of power transmission line is lower than supporting bar top 5mm.
According to one embodiment of the invention, the water after the icing on selected power transmission line melts all enters conical hopper, and support bar can not enter in described conical hopper after icing with it melts.
According to another embodiment, provide a kind of method of carrying out transmission line icing thickness measurement, it is characterized in that comprising the following steps:
1) choose the power transmission line of material identical with tested power transmission line and size, length is a bit larger tham the spacing between enclosure interior two support bar;
2) risen by support bar, until the top of support bar reaches the outside of housing, and the height of supporting bar top distance Casing top is greater than more than 10cm, is then arranged on two support bars by the power transmission line chosen, more closed top cover; Or in advance power transmission line is arranged on two support bars, when needs are measured, opens top cover, support bar is risen, thus it is outer and make the height of power transmission line distance Casing top be greater than more than 10cm power transmission line to be risen from housing;
3) whole measurement be placed in the outdoor position contour with tested power transmission line and keep the regular hour, making selected power transmission line produces the icing structure identical with tested power transmission line;
4) decent strut, closes at the power transmission line on support bar and support bar in housing, and then docks two and half top covers, thus closure shell;
5) using the well heater in housing to carry out heating, the icing on selected power transmission line is melted is water, water on power transmission line after icing thawing is all received by the conical hopper under power transmission line, thus measured the quality of water outlet by the weighing scale that is positioned under conical hopper, and by the mass transport that the measures controller to outside;
6) controller calculates the thickness of ice covering on transmission lines according to following mathematical expression:
icing on power transmission line wherein measured by m melt the quality of rear water, ρ is the density of ice, and r is the radius of power transmission line, and l is the length of selected power transmission line.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of measurement mechanism of the present invention in the first state;
Accompanying drawing 2 is measurement mechanism of the present invention structural representations in the second state;
Accompanying drawing 3 is structural representations of measurement mechanism Casing top of the present invention;
In above-mentioned accompanying drawing, 1 represents housing, and 2 represent power transmission line, and 3 represent liftable support bar, and 4 represent weighing scale, and 5 represent conical hopper, and 6 represent well heater.
Embodiment
First on the basis of 1-3 by reference to the accompanying drawings, transmission line icing thickness measurement mechanism of the present invention is described below, as shown in Figure 1-2, transmission line icing thickness measurement mechanism of the present invention comprises the rectangle housing 1 of hollow, this housing comprises bottom surface, be positioned at four sidewalls on bottom surface, and is positioned at the top cover on four sidewalls.The weighing scale 4 be positioned on bottom surface is comprised in hollow rectangular housing 1 inside, top and this weighing scale of this weighing scale 4 are connected with conical hopper 5, be close in the both sides of conical hopper 5 and the outermost edges of conical hopper and be provided with liftable support bar 3, liftable support bar 3 is two, power transmission line is connected between two liftable support bars 3, the length of power transmission line 2 is a bit larger tham the spacing between two liftable support bars, be installed to after between two support bars to make power transmission line 2, height in the middle of power transmission line is not higher than the height of two ends support bar, preferably lower than the height 5mm of supporting bar top.No matter liftable support bar 3 is in rise or falls state, and the height on support bar 3 top is all higher than the height of conical hopper 5.Wherein Fig. 1 is that under support bar 3 is in the first state of rise with power transmission line 2, Fig. 2 is under support bar and power transmission line are in the state fallen, and under two states, the top of support bar 3 and the power transmission line 2 being in supporting bar top are all positioned on conical hopper 5.As shown in Figure 3, the top cover of housing 1 is made up of two symmetrical half top covers, on each half top cover, the position corresponding with support bar is provided with semi-circular indentation, the diameter of semi-circular indentation is a bit larger tham the diameter of support bar, two symmetrical half top covers can dock closure casing 1, respectively towards rear movement, thus the space of exposing enclosure interior can also be opened, with the outside facilitating two support bars power transmission line to be risen to housing 1.Like this, after two symmetrical half top cover docking, semi-circular indentation docking formation circle just by support bar of two and half top covers.Also have well heater 6 in the inside of housing 1, the position of well heater 6 can be arranged on sidewall, and certainly, other suitable positions are also fine, as long as can realize the function heated, quantity can be one or more.Meanwhile, the shape of top cover upper notch can be other shapes, as long as corresponding with the shape of support bar.
Describe this device below in detail for measuring the method for transmission line icing thickness.The method comprises the following steps:
1) choose the power transmission line of material identical with tested power transmission line and size, length equals the spacing between inner two support bars of hollow rectangular housing 1;
2) top cover of housing 1 is opened, also namely two and half top covers retreat two support bars exposing housing 1 inside respectively, then support bar is risen, until support bar is raised to the outside of housing, and the height of supporting bar top distance housing 1 top cover is greater than more than 10cm, then power transmission line is arranged on two support bars, more closed top cover; Or in advance power transmission line is arranged on two support bars, when needs are measured, directly support bar is risen, thus it is outer and make the height of power transmission line distance housing 1 top cover be greater than more than 10cm power transmission line to be risen from housing;
3) whole measurement be placed in the outdoor position contour with tested power transmission line and keep the regular hour, making selected power transmission line produces the icing structure identical with tested power transmission line;
4) decent strut, closes at the power transmission line on support bar and support bar in housing 1, and then docks two and half top covers, thus closure shell 1;
5) using the well heater in housing 1 to carry out heating, the icing on selected power transmission line is melted is water, water on power transmission line after icing thawing is all received by the conical hopper under power transmission line, thus measured the quality of water outlet by the weighing scale that is positioned under conical hopper, and by the mass transport that the measures controller to outside;
6) thickness of ice covering on transmission lines is calculated according to following mathematical expression:
icing on power transmission line wherein measured by m melt the quality of rear water, ρ is the density of ice, and r is the radius of power transmission line, and l is the length of selected power transmission line.
Under regard to measuring principle of the present invention and be described, when predicting power transmission line and freezing possibly, under in advance selected power transmission line being placed in the freezing environment identical with tested power transmission line, thus produce the icing thickness identical with true tested power transmission line, when transmission line icing thickness measured by needs, use device of the present invention to carry out the icing heated on power transmission line and be converted into water, and received by conical hopper.In heating process, because top cover is closed again, the loss that the evaporation decreasing water vapor causes, simultaneously, because the height in the middle of power transmission line is not higher than the height of support bar, so ice covering on transmission lines melt after water can all enter in conical hopper, and support bar originally icing with it melt the water big city that formed along support bar to dirty, can not enter into that conical hopper is interior to have an impact to measurement result.Meanwhile, in melting process, because top cover is closed again, can prevent the steam of outside from entering into enclosure interior to affect measurement result like this.Meanwhile, support bar is highly higher than more than top cover 10cm after rising is the impact of freezing for power transmission line to reduce top cover.
Because power transmission line is generally cylindrical, the computation process of ice covering thickness is as follows:
On power transmission line, icing Mass Calculation mathematical expression is as follows: (4 π R
2-4 π r
2) × l × ρ=m, the radius that what wherein R represented is after ice covering on transmission lines, m is the quality of ice, is also the quality of water after ice-out, and can derive the radius after ice covering on transmission lines according to above-mentioned mathematical expression is
again due to R=d+r, wherein d is the thickness of icing, so
thus, the thickness of icing layer on power transmission line can finally be accurately measured.
Housing 1 wherein can be other shape, and such as cylindrical shape, as long as there is inner space.In order to reach the object measuring accurately or can measure multiple time point ice covering thickness, can multiple measurement mechanism be set simultaneously.
Claims (7)
1. a transmission line icing thickness measurement mechanism, is characterized in that: comprise hollow housing, and this housing comprises bottom surface, is positioned at the upper side wall of bottom surface, and is positioned at the top cover on sidewall; The weighing scale be positioned on bottom surface is comprised in hollow housing inside, the top of this weighing scale and this weighing scale are connected with conical hopper, the liftable support bar being provided with and being positioned on bottom surface is close in the both sides of conical hopper and the outermost edges of conical hopper, liftable support bar is two, power transmission line is connected between two liftable support bars, the length of power transmission line is a bit larger tham the spacing between two liftable support bars, to make power transmission line be installed to after between described support bar, the height in the middle of power transmission line is not higher than the height of two ends supporting bar top; The top cover of housing is made up of two symmetrical half top covers, on each half top cover, the position corresponding with support bar is provided with half recess, the diameter of half recess is a bit larger tham the size of support bar, and two symmetrical half top covers can move forward docking closure casing and open the space of exposing enclosure interior respectively towards rear movement; Like this, after two symmetrical half top cover docking, half recess docking formation one of two and half top covers is just by the whole recess of support bar; Described enclosure interior also has well heater, is converted into water for being melted by the icing on power transmission line.
2. measurement mechanism according to claim 1, is characterized in that: the shape of described housing is rectangular parallelepiped or right cylinder.
3. measurement mechanism according to claim 1, is characterized in that: described well heater is arranged on described sidewall.
4. measurement mechanism according to claim 1, is characterized in that: after described support bar rises, the height on top is higher than described top cover at least 10cm.
5. measurement mechanism according to claim 1, is characterized in that: described power transmission line is installed to after between support bar, and the height in the middle of power transmission line is lower than supporting bar top 5mm.
6. measurement mechanism according to claim 1, is characterized in that: the water after the icing on selected power transmission line melts all enters conical hopper, and support bar can not enter in described conical hopper after icing with it melts.
7. utilize arbitrary device in claim 1-6 to carry out a method for transmission line icing thickness measurement, it is characterized in that comprising the following steps:
1) choose the power transmission line of material identical with tested power transmission line and size, length is a bit larger tham the spacing between enclosure interior two support bar;
2) risen by support bar, until the top of support bar reaches the outside of housing, and the height of supporting bar top distance housing 1 top cover is greater than more than 10cm, is then arranged on two support bars by the power transmission line chosen, more closed top cover; Or in advance power transmission line is arranged on two support bars, when needs are measured, opens top cover, support bar is risen, thus it is outer and make the height of power transmission line distance Casing top be greater than more than 10cm power transmission line to be risen from housing;
3) whole measurement be placed in the outdoor position contour with tested power transmission line and keep the regular hour, making selected power transmission line produces the icing structure identical with tested power transmission line;
4) decent strut, closes at the power transmission line on support bar and support bar in housing, and then docks two and half top covers, thus closure shell;
5) using the well heater in housing to carry out heating, the icing on selected power transmission line is melted is water, water on power transmission line after icing thawing is all received by the conical hopper under power transmission line, thus measured the quality of water outlet by the weighing scale that is positioned under conical hopper, and by the mass transport that the measures controller to outside;
6) controller calculates the thickness of ice covering on transmission lines according to following mathematical expression:
icing on power transmission line wherein measured by m melt the quality of rear water, ρ is the density of ice, and r is the radius of power transmission line, and l is the length of selected power transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779544.7A CN105300334B (en) | 2015-11-13 | 2015-11-13 | Transmission line icing thickness measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779544.7A CN105300334B (en) | 2015-11-13 | 2015-11-13 | Transmission line icing thickness measurement apparatus |
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| CN105300334A true CN105300334A (en) | 2016-02-03 |
| CN105300334B CN105300334B (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510779544.7A Expired - Fee Related CN105300334B (en) | 2015-11-13 | 2015-11-13 | Transmission line icing thickness measurement apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716560A (en) * | 2016-02-26 | 2016-06-29 | 东南大学 | Device for detecting thickness of ice and snow on road |
| CN106017271A (en) * | 2016-07-20 | 2016-10-12 | 国网浙江省电力公司绍兴供电公司 | Auxiliary scale for observing icing of power transmission line |
| CN106289001A (en) * | 2016-07-20 | 2017-01-04 | 国网浙江省电力公司绍兴供电公司 | A kind of aided ruler device for powerline ice-covering observation |
| CN113008185A (en) * | 2021-01-25 | 2021-06-22 | 四川东钢新材料股份有限公司 | Cable coating thickness detection method and aluminum layer uniform thickness detection method of aluminum-clad steel wire |
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| CN205138461U (en) * | 2015-11-13 | 2016-04-06 | 华北电力大学（保定） | Power transmission line icing thickness measurement device |
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2015
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Patent Citations (9)
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| US4426885A (en) * | 1982-09-09 | 1984-01-24 | John Visco | Device for indicating the thickness of ice |
| JPH11295443A (en) * | 1998-04-10 | 1999-10-29 | Ship Res Inst Ministry Of Transport | Icing meter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716560A (en) * | 2016-02-26 | 2016-06-29 | 东南大学 | Device for detecting thickness of ice and snow on road |
| CN106017271A (en) * | 2016-07-20 | 2016-10-12 | 国网浙江省电力公司绍兴供电公司 | Auxiliary scale for observing icing of power transmission line |
| CN106289001A (en) * | 2016-07-20 | 2017-01-04 | 国网浙江省电力公司绍兴供电公司 | A kind of aided ruler device for powerline ice-covering observation |
| CN113008185A (en) * | 2021-01-25 | 2021-06-22 | 四川东钢新材料股份有限公司 | Cable coating thickness detection method and aluminum layer uniform thickness detection method of aluminum-clad steel wire |
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| CN105300334B (en) | 2017-11-14 |
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Granted publication date: 20171114 Termination date: 20201113 |