CN211787832U - Monitoring device for insulator ice-coated snow melting process - Google Patents
Monitoring device for insulator ice-coated snow melting process Download PDFInfo
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- CN211787832U CN211787832U CN202020415603.9U CN202020415603U CN211787832U CN 211787832 U CN211787832 U CN 211787832U CN 202020415603 U CN202020415603 U CN 202020415603U CN 211787832 U CN211787832 U CN 211787832U
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Abstract
The utility model discloses a monitoring device for the melting process of insulator ice-covered snow, which comprises a melting ice experiment platform consisting of four walls, a roof and a floor, wherein a sealing door and an observation window are arranged on the wall on one side, and a heater is arranged on the opposite wall on the other side; a group of temperature sensors are arranged on the wall bodies at the two sides; the outer surface of the wall body is provided with a speed regulator and a temperature, humidity and pressure display; an analog insulator string is arranged in the ice melting experiment platform, and an infrared quartz radiation lamp, three cameras and a temperature and humidity polling instrument are arranged around the analog insulator string; two ends of the analog insulator string are connected with the insulation resistor and the leakage current measuring module, and a weighing meter is arranged below the analog insulator string; and a refrigeration compressor is arranged at an interval with the simulation insulator string, two groups of negative pressure fans are arranged between the refrigeration compressor and the simulation insulator string side by side, and each group of negative pressure fans is provided with a wind speed controller. The utility model discloses the structure is clear, and measurement accuracy improves.
Description
Technical Field
The utility model belongs to the technical field of little meteorological environment simulation, a monitoring devices that insulator icing snow melts process is related to.
Background
In a power transmission line, insulators play important roles in mechanical fixation and electrical insulation. The insulator not only bears the weight of a mechanical load wire and a metal accessory, but also must bear wind load, snow load, wire galloping and the like under bad weather conditions; from an electrical point of view, the insulator must not only insulate the wire from the ground, but also withstand the overvoltage surge caused by lightning and switching operations, and therefore, is an important component of the transmission line, and the health of the insulator affects the safe operation condition and the operation life of the transmission line. With the rapid development of social economy, the demand of electric energy also rises sharply, and the existing transmission line has large transmission capacity and long transmission distance, so that the transmission line needs to pass through lakes and mountains, and leads and insulators are extremely easy to be threatened by icing disasters. However, in recent years, various scientific research institutions mainly put great efforts on the simulation of various methods for melting ice and snow covered on the conducting wire, and successively establish an experiment system for simulating the ice covering of the power transmission line.
Based on the existing insulator ice melting test method and the existing artificial ice coating experiment platform capable of simulating natural ice coating meteorological conditions, an experiment platform which has a complete function and is used for on-line monitoring of the ice coating insulator natural condition simulation melting process needs to be developed urgently, and the function of predicting the ice flashover probability of the ice coating insulator melting process is realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an insulator icing snow melts monitoring devices of process has solved prior art's equipment, the function singleness, the poor problem of environmental suitability.
The technical scheme of the utility model is that, the insulator ice-covered snow melting process monitoring device comprises a closed ice melting experimental platform which is formed by four walls, a roof and a floor, a sealing door and an observation window are arranged on the wall on one longitudinal side, and a heater is arranged on the other wall opposite to the sealing door; a group of temperature sensors are respectively arranged on the wall bodies at the two longitudinal sides; the outer surface of the wall body is respectively provided with a speed regulator and a temperature, humidity and pressure display;
the ice melting experiment platform is internally provided with a simulation insulator string which is hung in the air; an infrared quartz radiation lamp, three cameras and a temperature and humidity polling instrument are respectively arranged around the analog insulator string; two ends of the analog insulator string are connected with the insulation resistor and the leakage current measuring module, and a weighing meter is arranged below the analog insulator string; and a refrigeration compressor is arranged at an interval with the simulation insulator string, two groups of negative pressure fans are arranged between the refrigeration compressor and the simulation insulator string side by side, and each group of negative pressure fans is provided with a wind speed controller.
The utility model discloses a monitoring devices of insulator icing snow process of melting, its characterized in that still lies in:
the infrared quartz radiation lamp is connected to a telescopic long rod, and the tail end of the telescopic long rod is fixed on the roof.
The diameter of the ice melting collection basin at the upper part of the weighing meter is larger than the maximum diameter of the umbrella skirt of the simulation insulator string.
And a partition plate is arranged between the two groups of negative pressure fans, and a rectangular air duct is arranged at the air outlet of each negative pressure fan.
The three cameras respectively face the analog insulator string from the top view, the front face and the side face.
The utility model has the advantages that the indoor designed experimental monitoring device for the process of simulating the melting of the insulator covered with ice and snow under natural meteorological conditions can carry out on-site experimental simulation in real time along with the follow-up of simulation results; by the design of the artificial ice melting experiment platform for simulating the on-site ice melting meteorological conditions of the insulators, ice coating and ice melting comparison tests of a plurality of groups of insulators can be simultaneously carried out; the experimental platform is provided for researching and solving the insulator ice flashing accident, experimental parameters of the experimental platform are adjustable and controllable, the experimental device is flexible, easy to operate and control, experimental data can be collected in real time and monitored conveniently, experimental modes are diversified, a plurality of groups of contrast tests can be carried out, efficiency is improved to the maximum extent, and the experimental platform has very important significance for preventing a series of accidents in the insulator ice melting process.
Drawings
Fig. 1 is a schematic view (plan view) of the installation structure of the present invention;
fig. 2 is a block diagram of the working principle of the present invention.
In the figure, 1, a wall body, 2, a temperature sensor, 3, a refrigeration compressor, 4, a negative pressure fan, 5, a camera, 6, an infrared quartz radiation lamp, 7, an analog insulator string, 8, an insulation resistance and leakage current measuring module, 9, a sealing door, 10, an observation window, 11, a temperature and humidity patrol instrument, 12, a weighing meter, 13, a wind speed controller, 14, an isolation plate, 15, a speed regulator, 16, a temperature and humidity pressure display and 17, a heater are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the structure of the device of the utility model is that a closed ice melting experimental platform is formed by four walls 1, a roof and a floor together, and the length, width and height of the ice melting experimental platform are respectively 4.2m, 3.2m and 2.2 m;
a sealing door 9 and an observation window 10 are arranged on the wall body 1 at one longitudinal side, the observation window 10 made of high-transparency organic glass material is arranged on the sealing door 9, or the observation window 10 is arranged in the wall body 1, so long as the melting process of the ice and snow is convenient to observe; a heater 17 is arranged on the other side wall body 1 opposite to the sealing door 9; a group of temperature sensors 2 are respectively arranged on the wall bodies 1 at the two longitudinal sides; the outer surface of the wall body 1 is respectively provided with a speed regulator 15 and a temperature, humidity and pressure display 16;
the ice melting experiment platform is internally provided with a simulation insulator string 7, and the simulation insulator string 7 is hung in the air and vertically arranged; an infrared quartz radiation lamp 6, three cameras 5 and a temperature and humidity polling instrument 11 are respectively arranged around the analog insulator string 7; two ends of the analog insulator string 7 are connected with the insulation resistance and leakage current measuring module 8, and a weighing meter 12 is arranged below the analog insulator string 7;
the refrigeration compressor 3 is arranged at an interval with the simulation insulator string 7, two groups of negative pressure fans 4 are arranged between the refrigeration compressor 3 and the simulation insulator string 7 side by side, each group of negative pressure fans 4 is provided with a wind speed controller 13, a separation plate 14 is arranged between the two groups of negative pressure fans 4, and the air outlet of each negative pressure fan 4 is provided with a rectangular air duct with the length and the height of 1.5m and 0.8m respectively (each rectangular air duct is formed by arranging a plurality of air ducts and is used for preventing the swing of refrigeration airflow).
The wall body 1 is made of a polyurethane double-sided color steel plate (thermal insulation material) which has low thermal conductivity and good thermal performance; the coating has the performances of moisture resistance, water resistance, fire resistance and flame retardance and is resistant to high temperature; the wall thickness can be reduced to the maximum extent due to excellent heat insulation performance, so that the utilization rate of the space in a laboratory is improved; no pollution to the environment; acid and alkali resistance, corrosion resistance, heat resistance, cold resistance and strong water impermeability.
The two temperature sensors 2, the temperature and humidity polling instrument 11 and the temperature and humidity pressure display 16 are collectively called an environment monitoring assembly;
the refrigeration compressor 3, the negative pressure fan 4, the infrared quartz radiation lamp 6 and the heater 17 are called temperature control components together; the mutual matching is carried out, the experimental temperature is controlled to be-5 ℃, and the control precision is +/-0.1 ℃;
the insulation resistance and leakage current measuring module 8, the weight meter 12 and the image acquisition assembly 5 are collectively called as an ice melting monitoring assembly of the simulated insulator string 7 in the ice melting process, so that the extraction and monitoring of a plurality of groups of measurement parameters of the simulated insulator string 7 in the ice melting experimental process, such as the insulation resistance, the leakage current, the ice melting rate and the ice melting form of the simulated insulator string 7, can be realized.
The diameter of the ice melting collection basin on the upper part of the weighing meter 12 is slightly larger than the maximum diameter of the umbrella skirt of the simulation insulator string 7, the weighing meter 12 can display the weight of the snow water after the ice and snow are melted in real time, and the weighing meter 12 and the ice melting collection basin are called an ice melting weighing assembly together.
The three cameras 5 capable of photographing and monitoring in real time are called an image acquisition assembly together, the three cameras 5 face the simulated insulator string 7 from the overlook part, the front part and the side part respectively, the three cameras 5 perform overlook shooting, front shooting and side shooting on an experimental object (the simulated insulator string 7), on one hand, the thickness of a melted part of the ice-coated insulator can be acquired and calculated by comparing a plurality of groups of pictures at the same angle and different ice melting times, and on the other hand, the three cameras can be used for monitoring whether a flashover phenomenon occurs in the ice melting process of the ice-coated insulator. The device is used for collecting and calculating the thickness of the melted part of the ice coating of the simulation insulator string 7 and recording the whole ice flashing process of the simulation insulator string 7.
Here, the image acquisition component, the ice-melting weighing component, and the insulation resistance and leakage current measurement component are collectively referred to as an ice-melting monitoring component.
The negative pressure fan 4 is connected with a speed regulator 15 outside the wall body 1, and the wind speed regulating range of the speed regulator 15 is 0-20 m/s; the division board 14 is arranged at the symmetrical axial position where the two negative pressure fans 4 are arranged, and the division board 14 can be detached at will to stably blow to the airflow field of the simulation insulator string and can be used for simulating various meteorological conditions. The wind speed controller 13 is called as a wind speed control assembly through the isolation plate 14, the refrigeration compressor 3 and the negative pressure fan 4, works in a matched mode, and achieves real-time monitoring of wind speed through the anemoscope.
The infrared quartz radiation lamp 6 can realize multi-gear adjustment of power of 0 w-140 w, the position can be moved randomly, and the emitted light can simulate the sunlight under natural conditions of any temperature and radiation intensity; meanwhile, a detachable reflecting lampshade is also arranged, so that light rays emitted by the infrared quartz radiation lamp 6 are concentrated, more heat radiation is provided, and more efficient ice melting is realized; the infrared quartz radiation lamp 6 is connected to a freely movable telescopic long rod, the tail end of the telescopic long rod is fixed on a roof, the structure can realize multi-angle experimental simulation of a light source, and can also realize sectional type ice melting of a simulation insulator chain 7 from bottom to top, and the insulation flashover probability in the ice melting process is reduced; the amount of radiation emitted by the infrared quartz radiation lamp 6 and the temperature can be monitored by an infrared thermometer (this component needs to be manually placed at a position short of the lamp cover of the infrared quartz radiation lamp 6, so it is not shown in the figure) to obtain the temperature and calculate it according to an empirical formula. The infrared quartz radiation lamp 6, the infrared thermometer and the telescopic long rod are together called an optical radiation control component.
The insulation resistance and leakage current measuring module 8 selects a 2500-5000 v multi-gear digital insulation resistance tester, the insulation resistance within the voltage range can be tested to the highest insulation resistance of 100-200G omega, the display screen has a high-low range double-scale indication capable of automatically converting, the color scale is easy to read, and the LED displays corresponding colors; the whole machine adopts the portable design of an ABS plastic casing, and has the characteristics of strong anti-interference capability, compact structure and exquisite appearance; the DC and AC dual-purpose, built-in rechargeable battery and intelligent charging module, the whole machine output power is large (C type), realizes the change of insulation resistance value in the ice-melting process of synchronous display. The insulation resistance and leakage current measuring module 8 displays the amplitude of small current passing through the surface of the analog insulator string 7 in a leakage current tester by adding 3-5 kv of alternating current high voltage to the analog insulator string 7. The internal structure of the insulation resistance and leakage current measuring module 8 is divided into an insulation resistance measuring component and a leakage current measuring component.
Referring to fig. 2, the working principle of the utility model is that the simulation insulator string 7 is used as the monitoring object of the melting process of the ice and snow, and the temperature control component, the wind speed control component and the light radiation control component are mutually matched to jointly realize the control of the internal environment; then, the ice melting monitoring component carries out data monitoring, wherein the image acquisition component finishes image acquisition and acquisition, the ice melting weighing component finishes ice melting weighing, and the insulation resistance and leakage current measuring module 8 finishes insulation resistance measurement and leakage current measurement; in addition, the environment monitoring assembly is used for monitoring the experimental environment, all electrical components are matched with each other, and control of the ice-covering and snow-melting process and data acquisition and output are jointly completed.
In the experiment process, the refrigeration compressor 3 is used before the infrared quartz radiation lamp 6 to control the temperature of the experiment platform in the icing process, so that conditions are provided for the early-stage icing of the experiment.
Claims (5)
1. The utility model provides a monitoring devices that insulator icing snow melts process which characterized in that: the sealed ice melting experiment platform is formed by four walls (1), a roof and a floor together, a sealing door (9) and an observation window (10) are arranged on the wall (1) on one longitudinal side, and a heater (17) is arranged on the other wall (1) opposite to the sealing door (9); a group of temperature sensors (2) are respectively arranged on the wall bodies (1) at the two longitudinal sides; the outer surface of the wall body (1) is respectively provided with a speed regulator (15) and a temperature, humidity and pressure display (16);
a simulation insulator string (7) is arranged in the ice melting experiment platform, and the simulation insulator string (7) is hung in the air; an infrared quartz radiation lamp (6), three cameras (5) and a temperature and humidity polling instrument (11) are respectively arranged around the analog insulator string (7); two ends of the analog insulator string (7) are connected with an insulation resistor and leakage current measuring module (8), and a weighing meter (12) is arranged below the analog insulator string (7); the refrigeration compressor (3) is arranged at an interval with the simulation insulator string (7), two groups of negative pressure fans (4) are arranged between the refrigeration compressor (3) and the simulation insulator string (7) side by side, and each group of negative pressure fans (4) is provided with a wind speed controller (13).
2. The device for monitoring the melting process of the ice and snow covered insulator according to claim 1, wherein: the infrared quartz radiation lamp (6) is connected to a telescopic long rod, and the tail end of the telescopic long rod is fixed on the roof.
3. The device for monitoring the melting process of the ice and snow covered insulator according to claim 1, wherein: the diameter of the ice melting collecting basin at the upper part of the weighing meter (12) is larger than the maximum diameter of the umbrella skirt of the simulation insulator string (7).
4. The device for monitoring the melting process of the ice and snow covered insulator according to claim 1, wherein: and a partition plate (14) is arranged between the two groups of negative pressure fans (4), and a rectangular air duct is arranged at the air outlet of each negative pressure fan (4).
5. The device for monitoring the melting process of the ice and snow covered insulator according to claim 1, wherein: the three cameras (5) respectively face the analog insulator string (7) from the top view, the front face and the side face.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020415603.9U CN211787832U (en) | 2020-03-27 | 2020-03-27 | Monitoring device for insulator ice-coated snow melting process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020415603.9U CN211787832U (en) | 2020-03-27 | 2020-03-27 | Monitoring device for insulator ice-coated snow melting process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092518A (en) * | 2021-03-24 | 2021-07-09 | 沈阳工程学院 | High latitude area snow and ice receive climate influence analogue means |
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2020
- 2020-03-27 CN CN202020415603.9U patent/CN211787832U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092518A (en) * | 2021-03-24 | 2021-07-09 | 沈阳工程学院 | High latitude area snow and ice receive climate influence analogue means |
| CN113092518B (en) * | 2021-03-24 | 2022-12-09 | 沈阳工程学院 | High latitude area snow and ice receive climate influence analogue means |
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