CN109449819B - Insulator surface on-line monitoring device - Google Patents
Insulator surface on-line monitoring device Download PDFInfo
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- CN109449819B CN109449819B CN201811289087.3A CN201811289087A CN109449819B CN 109449819 B CN109449819 B CN 109449819B CN 201811289087 A CN201811289087 A CN 201811289087A CN 109449819 B CN109449819 B CN 109449819B
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Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention provides an insulator surface online monitoring device, which relates to the technical field of transmission line cleaning equipment and comprises a mobile carrier, a storage bin arranged on the mobile carrier, a suspension mechanism arranged on the storage bin, a spraying mechanism arranged on the mobile carrier, a monitoring mechanism arranged on the mobile carrier and used for monitoring an insulator, and a control mechanism arranged on the mobile carrier and used for controlling the mobile carrier, the suspension mechanism, the monitoring mechanism and the spraying mechanism; the surface of the insulator can be monitored one by one in a transmission line inspection mode in cold weather, and the surface of the insulator can be cleaned and monitored while ice melting is carried out on a line; in addition, the ice melting agent suitable for the ice melting device is provided, the ice point is low, the ice melting rate is high in a short time, the ice melting effect is obvious, and the damage to carbon steel and plants is small.
Description
Technical Field
The invention relates to the technical field of insulator monitoring equipment, in particular to an insulator surface online monitoring device.
Background
The insulator is a special insulating control and can play an important role in an overhead transmission line. Early-year insulators are mostly used for telegraph poles, and a plurality of disc-shaped insulators are hung at one end of a high-voltage wire connecting tower which is gradually developed, are used for increasing creepage distance and are usually made of glass or ceramics, namely insulators. The insulator should not fail due to various electromechanical stresses caused by changes in environmental and electrical load conditions, otherwise the insulator would not have a significant effect and would compromise the service and operational life of the entire line, and a means of detecting its surface is needed to ensure the proper operation of the transmission line.
The insulator contamination monitoring system disclosed in the publication No. 106597240A is provided with an ultraviolet detection module, a temperature detection module and a humidity detection module, wherein the ultraviolet detection module, the temperature detection module and the humidity detection module are used for respectively detecting an insulator contamination ultraviolet discharge signal and the temperature and humidity of the environment where the insulator is located, inputting the ultraviolet discharge signal and the temperature and humidity signal into a BP neural network prediction module, giving out a predicted value of equivalent salt deposit density, sending the predicted value out through a wireless sending module under the control of a controller module, receiving the equivalent salt deposit density data through a wireless receiving module in a monitoring room, checking and monitoring by a worker at a PC monitoring end, and preventing the insulator from flashover through predicting the equivalent salt deposit density, so that the insulator contamination monitoring system has the advantages of predictability and practicability, but does not clean the surface of the insulator, especially in cold climate.
A suspension insulator contamination degree monitoring system and method disclosed in publication No. 108680604a, the system comprising: the energy-taking voltage divider, the non-inductive resistor, the leakage current monitoring module, the humidity acquisition module, the processor and the sampling suspension insulator. The energy-taking voltage divider is connected with the sampling suspension insulator through an isolating switch, the energy-taking voltage divider is connected with the leakage current monitoring module and the humidity acquisition module, the non-inductive resistor is connected with the sampling suspension insulator, and the humidity acquisition module is connected with the leakage current monitoring module. The processor compares the leakage current signal and the air humidity data with a pre-established pollution degree judgment curve to obtain the pollution degree of the sampling suspension insulator; and then comparing the measured value with a preset pollution degree alarm value, if the pollution degree of the sampling suspension insulator is greater than the preset pollution degree alarm value, alarming, otherwise, not alarming. The real-time monitoring and alarming of the operation condition of the simulation insulator are realized, the operation is simple, the time consumption is short, the efficiency is high, the live monitoring is realized, and the influence caused by power failure is reduced; however, the device does not clean the surface of the insulator, and does not adopt a mode of monitoring a plurality of insulators through a line inspection mode, especially in cold weather.
Disclosure of Invention
In view of the above, the invention provides an insulator surface online monitoring device, which can monitor insulator surfaces one by one in a transmission line inspection mode in cold weather, and can clean and monitor the insulator surfaces while melting ice on a line; in addition, the ice melting agent suitable for the ice melting device is provided, the ice point is low, the ice melting rate is high in a short time, the ice melting effect is obvious, and the damage to carbon steel and plants is small.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an insulator surface online monitoring device comprises a moving carrier, a storage bin arranged on the moving carrier, a suspension mechanism arranged on the storage bin, a spraying mechanism arranged on the moving carrier, a monitoring mechanism arranged on the moving carrier and used for monitoring an insulator, and a control mechanism arranged on the moving carrier and used for controlling the moving carrier, the suspension mechanism, the monitoring mechanism and the spraying mechanism;
the mobile carrier comprises a walking module arranged on the power transmission line, a current transformer arranged on the walking module and a first electrostatic shielding net arranged on the walking module;
the lower end of the storage bin is provided with a storage supporting rod, the lower end of the storage supporting rod is provided with a first cloud platform, the lower end of the first cloud platform is provided with a storage supporting arm, and a second cloud platform is arranged at the end part of the storage supporting arm and is arranged on the walking module;
the walking module comprises a first walking wheel, a supporting rod arranged at the axle end of the first walking wheel, a compression telescopic rod arranged at the upper end part of the supporting rod, a walking motor arranged at the end part of the compression telescopic rod, and a second walking wheel arranged on the output shaft of the walking motor;
monitoring mechanism turns to the motor including setting up first monitoring on the bracing piece, sets up first monitoring turns to the horizontal bracing piece of monitoring on the motor output shaft, sets up the vertical bracing piece of monitoring of the horizontal bracing piece tip of monitoring sets up monitoring vertical bracing piece upper end second monitoring turns to the motor, sets up the second monitoring turns to the epaxial semicircle type support of motor output, sets up a plurality of high definition digtal camera on the semicircle type support, the monitoring spray tube of intercommunication storage silo, and sets up on the semicircle type support and with a plurality of monitoring nozzles that the monitoring spray tube is linked together.
Spraying mechanism is including setting up spraying pole on the bracing piece sets up the arc type spraying frame of spraying pole tip sets up a plurality of atomising nozzles on the arc type spraying frame, set up a plurality ofly atomising nozzle rear portion and with the conveying pipeline that the storage silo is linked together sets up miniature booster pump on the conveying pipeline, and set up solenoid valve on the conveying pipeline.
The suspension mechanism comprises a suspension bin arranged on the storage bin, a pressure storage tank arranged in the suspension bin, a suspension air bag arranged at an opening at the upper end of the suspension bin, an inflation electromagnetic valve arranged on the pressure storage tank, and an deflation electromagnetic valve arranged on the side wall of the suspension bin.
The control mechanism comprises a second electrostatic shielding net arranged on the supporting rod, a PLC arranged in the second electrostatic shielding net and a storage battery connected with the PLC.
Helium or argon is arranged in the pressure storage tank.
The ice melting agent is arranged in the storage bin and is prepared from the following components in parts by weight: 15-20 parts of modified organic acid calcium, 36-42 parts of 1, 2-propylene glycol, 12-17 parts of potassium acetate, 5-8 parts of surfactant, 8-10 parts of sodium acrylate, 2-3 parts of calcium ammonium nitrate and 52-58 parts of water.
Preferably, the preparation method of the modified organic acid calcium comprises the following steps:
s1: adding calcium oxide into the bamboo vinegar liquid, and stirring at the rotation speed of 300-400r/min for 10-15min at room temperature to obtain organic acid calcium;
s2: sequentially adding montmorillonite and coupling agent into 6-8% phosphoric acid solution by mass fraction, heating in water bath at 55-60 deg.C, stirring at 200-;
s3: and (3) adding the modified montmorillonite and the carbon nano tube obtained in the step (S2) into the organic acid calcium obtained in the step (S1), stirring at the rotating speed of 200-300r/min for 10-15min at room temperature, oscillating for 1-1.5h in ultrasonic waves with the frequency of 40kHz and the power of 500W, filtering, drying and grinding to obtain the modified organic acid calcium.
Preferably, the dosage ratio of each component in the modified organic acid calcium is as follows: phosphoric acid solution: calcium oxide: montmorillonite: coupling agent: sodium polyphosphate: the carbon nano tube is 100-105 g: 35-40 g: 10-12 g: 6-10 g: 1-1.2 g: 0.3-0.6 g: 1.5-2.2 g.
Preferably, the coupling agent is a silane coupling agent KH550 or KH 560.
Preferably, the particle size of the montmorillonite is 70-80 nm.
Preferably, the particle size of the modified organic acid calcium is 20-100 nm.
Preferably, the surfactant is polyoxyethylene lauryl ether or polyoxyethylene alkylphenol.
Aiming at the phenomena that the ice melting speed is low under the low-temperature condition or in a short time, the ice melting effect is poor, the ice melting and deicing are not suitable for the ice melting and deicing of a long-distance power transmission line and the long-distance regular cleaning cannot be realized, the movable carrier is adopted as the base body to realize walking, the storage bin is arranged on the base body, the ice melting agent is arranged in the storage bin, and then the structure is lifted upwards through the suspension mechanism to realize floating; the invention can regularly clean the power transmission line in winter, can realize the functions of routing inspection and cleaning ice blocks, and provides the ice melting agent suitable for the ice melting device, which has low freezing point, high ice melting speed in a short time, obvious ice melting effect and little damage to carbon steel and plants.
In addition, the removal carrier of adoption is including setting up the walking module on transmission line, can realize the removal of this device, and the electric drive of this device can be guaranteed to the current transformer who sets up on the walking module, and the first electrostatic screen who sets up can ensure to compress tightly the stationarity that telescopic link and walking motor moved on it, and the walking module includes first walking wheel and second walking wheel, it cooperates mutually and can fix this device on transmission line, realize the walking on transmission line, and the walking motor that sets up can realize the positive and negative forward of marcing for step motor, in addition, can set up camera or distance sensor on the bracing piece in order to realize the function of patrolling and examining, certainly still can realize the function of patrolling and examining according to the distance change that compresses tightly the telescopic link on the second walking wheel.
In addition, its lower extreme of storage silo of adoption sets up the storage bracing piece, and set up first cloud platform at storage bracing piece lower extreme, and set up the storage support arm on first cloud platform, then set up the second cloud platform at the tip of storage support arm, and set up the second cloud platform on walking module's bracing piece, thereby realize fixing, the adjustment of angle has also been realized, the first cloud platform and the second cloud platform of adoption are the diaxon cloud platform, can set up electrostatic screen at its outer wall in order to avoid the influence that the strong electric field caused.
In addition, the adopted spraying mechanism comprises a spraying rod arranged on a support rod, an arc-shaped spraying frame arranged on the spraying rod, a plurality of atomizing nozzles can be arranged on the arc-shaped spraying frame, ice melting agent is conveyed to the atomizing nozzles from a storage bin through a conveying pipe so as to be sprayed out to melt ice, certainly, two spraying mechanisms can be arranged in front of and behind the arc-shaped spraying frame so as to freely move back and forth, a suspension bin is arranged on the storage bin of the arranged suspension mechanism, a pressure storage tank is arranged in the suspension bin, helium or argon can be arranged in the suspension bin, hydrogen can be arranged in the suspension bin, safety protection is needed, a suspension air bag can be inflated in the suspension bin so as to realize suspension, a deflation electromagnetic valve is arranged so as to realize the effect of deflation and reducing the buoyancy when the recovery or the reduction of the ice melting agent is needed, a second electrostatic shielding net is arranged on the support rod of the arranged control mechanism, and then, and a storage battery, preferably in the form of a rechargeable lithium battery, is provided.
In addition, the monitoring mechanism who adopts turns to the motor including the first monitoring that sets up on the bracing piece, the setting turns to the horizontal bracing piece of monitoring on the motor output shaft at first monitoring, can turn to the angular adjustment of the rotation realization monitoring horizontal bracing piece of motor through first monitoring, at the vertical bracing piece of monitoring of the horizontal bracing piece tip of monitoring, it can realize that the upper portion second monitoring turns to reciprocating of motor, and the second monitoring turns to the rotation that the motor can realize upper end semicircle type support, do benefit to the cleanness to insulator surface, realize the washing of insulator surface through the monitoring nozzle on this circular support, realize the monitoring to the surface through high definition digtal camera.
The ice melting agent adopted by the invention takes 1, 2-propylene glycol as a main component, has good water solubility, the aqueous solution of the ice melting agent can reach a very low freezing point, and simultaneously, the 1, 2-propylene glycol has good stability and small corrosivity, can be naturally degraded in nature as an organic small molecule, and has little pollution to soil, water and the like. The modified organic acid calcium prepared by the invention also has a good ice melting effect, and the ice melting efficiency is improved and the ice melting effect is better under the synergistic effect of the modified organic acid calcium and the 1, 2-propylene glycol. The potassium acetate is an organic freezing point depressant, and is combined with the 1, 2-propylene glycol and the modified organic acid calcium to obviously reduce the freezing point of the system. The sodium acrylate is used as a dispersing agent, has the functions of scale inhibition and water purification flocculation, has the effect of purifying the melted water quality, and prevents soil pollution. The calcium ammonium nitrate can cooperate with the 1, 2-propylene glycol to lower the freezing point of water and enhance the ice melting effect, and meanwhile, the ice melting agent flows into the soil, can add nitrogen elements required by plants and is beneficial to the growth of the plants. The particle size of the modified organic acid calcium is preferably 20-100nm, the dispersing effect is good, and the surfactant lauryl alcohol polyoxyethylene ether or alkylphenol polyoxyethylene ether is added to improve the emulsifying capacity among the components, so that the components can be mixed more effectively.
The bamboo vinegar is a liquid substance obtained by collecting gas generated in the pyrolysis of bamboo wood in the process of burning the bamboo wood into charcoal and cooling the gas at normal temperature. The bamboo vinegar liquid contains nearly 300 kinds of natural high molecular organic compounds, including organic acids, alcohols, ketones, aldehydes, esters and trace alkaline components. The invention mixes bamboo vinegar liquid with calcium oxide to prepare organic acidCalcium has a low freezing point and a good ice melting effect. The particle size of the montmorillonite is 70-80nm, the montmorillonite is modified by a phosphoric acid solution to increase the specific surface area and the chemical activity, the compatibility is enhanced by a silane coupling agent, and the montmorillonite is further modified by sodium polyphosphate to improve the dispersity of the montmorillonite; the preferable specific surface area of the carbon nano tube is more than or equal to 233m2The modified montmorillonite and carbon nano tube further modify organic acid calcium, enhance the hydrophobicity of the organic acid calcium and accelerate the ice melting speed of the ice melting agent.
The ice melting agent disclosed by the invention takes 1, 2-propylene glycol as a main component, and is combined with components such as modified organic acid calcium, potassium acetate and the like, so that the freezing point can reach-45 ℃, the ice melting rate at low temperature is high, the ice melting speed in a short time is high, and the ice melting effect is obvious; has the functions of scale inhibition and water purification flocculation, has the effect of purifying the melted water quality and prevents the soil from being polluted; the fertilizer also contains nitrogen, phosphorus and potassium elements required by plants, and can promote the growth of the plants.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure at the spray mechanism of the present invention;
FIG. 3 is a schematic diagram of the suspension mechanism of the present invention;
FIG. 4 is a schematic side view of the mobile carrier of the present invention;
FIG. 5 is a schematic structural view of the monitoring mechanism of the present invention;
fig. 6 is a schematic side view of the semicircular bracket of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly and completely described below with reference to fig. 1 to 6. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Example 1
An insulator surface online monitoring device comprises a mobile carrier, a storage bin 13 arranged on the mobile carrier, a suspension mechanism arranged on the storage bin 13, a spraying mechanism arranged on the mobile carrier, a monitoring mechanism 27 arranged on the mobile carrier and used for monitoring an insulator, and a control mechanism arranged on the mobile carrier and used for controlling the mobile carrier, the suspension mechanism, the monitoring mechanism and the spraying mechanism;
the mobile carrier comprises a walking module arranged on the power transmission line, a current transformer 25 arranged on the walking module, and a first electrostatic shielding net 4 arranged on the walking module;
the 13 lower extremes of storage silo sets up storage bracing piece 12, storage bracing piece 12 lower extreme sets up first cloud platform 11, first cloud platform 11 lower extreme sets up storage support arm 10, sets up the second cloud platform 9 of 10 tip of storage support arm, second cloud platform 9 sets up on the walking module.
The walking module comprises a first walking wheel 1, a supporting rod 26 arranged at the rotating shaft end of the first walking wheel 1, a pressing telescopic rod 5 arranged at the upper end part of the supporting rod 26, a walking motor 3 arranged at the end part of the pressing telescopic rod 5 and a second walking wheel 2 arranged on the output shaft of the walking motor 3;
monitoring mechanism 27 is including setting up first monitoring on the bracing piece turns to motor 271, sets up first monitoring turns to the horizontal bracing piece 272 of monitoring on the motor 271 output shaft, sets up the monitoring vertical support bar 273 of the horizontal bracing piece 272 tip of monitoring sets up monitoring vertical support bar 272 upper end second monitoring turns to motor 274, sets up the second monitoring turns to the semicircle type support 275 on the motor 274 output shaft, sets up a plurality of high definition digtal cameras 277 on the semicircle type support 275, the monitoring spray tube of intercommunication storage silo, and sets up on the semicircle type support and with a plurality of monitoring nozzles 276 that the monitoring spray tube is linked together.
Spraying mechanism is including setting up spraying pole 22 on the bracing piece 26 sets up the arc spraying frame 23 of spraying pole 22 tip sets up a plurality of fog nozzles 24 on the arc spraying frame 23 set up a plurality of fog nozzle 24 rear portion and with the conveying pipeline 19 that the storage silo 13 is linked together sets up miniature booster pump 21 on the conveying pipeline 19, and set up solenoid valve 20 on the conveying pipeline 21.
The suspension mechanism comprises a suspension bin 15 arranged on the storage bin 13, a pressure storage tank 18 arranged in the suspension bin 15, a suspension air bag 17 arranged at an opening at the upper end of the suspension bin 15, an inflation electromagnetic valve 16 arranged on the pressure storage tank 18, and an deflation electromagnetic valve 14 arranged on the side wall of the suspension bin 15.
The control mechanism comprises a second electrostatic shielding net 8 arranged on the support rod 26, a PLC7 arranged in the second electrostatic shielding net 8, and a storage battery 6 connected with the PLC 7.
Helium is provided in the pressure storage tank 18.
The ice melting agent is a conventional ice melting agent or any one of embodiments 2-5;
TABLE 1 parts by weight (parts) of the ingredients in the ice melting agents of examples 2-5
| Example 2 | Example 3 | Example 4 | Example 5 | |
| Modification ofOrganic |
15 | 17 | 19 | 20 |
| 1, 2-propanediol | 36 | 38 | 40 | 42 |
| |
12 | 14 | 16 | 17 |
| Surface active agent | 5 | 6 | 7 | 8 |
| Acrylic acid sodium salt | 8 | 8.5 | 9 | 10 |
| Ammonium calcium nitrate | 2 | 2.5 | 2.8 | 3 |
| Water (W) | 52 | 55 | 56 | 58 |
TABLE 2 amount (g) of each component in the modified calcium organic acid of examples 2, 4, 6 and 8
| Example 2 | Example 4 | Example 6 | Example 8 | |
| Bamboo vinegar liquid | 100 | 102 | 103 | 105 |
| Phosphoric acid solution | 35 | 37 | 38 | 40 |
| |
10 | 11 | 11 | 12 |
| Montmorillonite clay | 6 | 7 | 9 | 10 |
| Coupling agent | 1 | 1.1 | 1.1 | 1.2 |
| Sodium polyphosphate | 0.3 | 0.4 | 0.5 | 0.6 |
| Carbon nanotube | 1.5 | 1.8 | 2 | 2.2 |
Example 2
The present embodiment provides an insulator surface online monitoring device, which is different from embodiment 1 in that: the ice melting agent in example 1 is provided, and is prepared from the components and parts by weight shown in table 1, and the modified organic acid calcium is prepared from the components and the use amount shown in table 2.
Wherein the coupling agent is a silane coupling agent KH 550. The surfactant is polyoxyethylene lauryl ether.
The preparation method of the modified organic acid calcium comprises the following steps:
s1: adding calcium oxide into the bamboo vinegar liquid, and stirring at room temperature at a rotation speed of 300r/min for 15min to obtain organic acid calcium;
s2: sequentially adding montmorillonite and coupling agent into phosphoric acid solution with mass fraction of 6%, heating in water bath at 55-60 deg.C, stirring at 200r/min for 10min, adding sodium polyphosphate, keeping temperature and rotation speed unchanged, and continuously stirring for 45min to obtain modified montmorillonite;
s3: and (4) adding the modified montmorillonite and the carbon nano tube obtained in the step (S2) into the organic acid calcium obtained in the step (S1), stirring at the rotating speed of 200r/min for 15min at room temperature, oscillating for 1h in ultrasonic waves with the frequency of 40kHz and the power of 500W, filtering, drying and grinding to obtain the modified organic acid calcium.
The preparation method of the ice melting agent comprises the following steps: placing modified organic acid calcium, 1, 2-propylene glycol, potassium acetate and water in a magnetic stirrer at 50-60 ℃, stirring for 10min at a rotating speed of 400r/min, adding a surfactant, sodium acrylate and calcium ammonium nitrate, keeping the temperature unchanged, and stirring for 45min at a rotating speed of 200 r/min; and performing primary filtration on the aperture of 50 mu m, oscillating the obtained primary filtrate in ultrasonic waves with the frequency of 40kHz and the power of 500W for 2h, standing for 12h, and performing secondary filtration on the aperture of 30 mu m to obtain secondary filtrate, namely the ice melting agent.
Example 3
The present embodiment provides an insulator surface online monitoring device, which is different from embodiment 1 in that: the ice melting agent in the example 1 is provided, and is prepared from the components shown in the table 1 in parts by weight, and the using amount of each component in the modified organic acid calcium is the same as that in the example 2.
Wherein the coupling agent is a silane coupling agent KH 560. The surfactant is alkylphenol polyoxyethylene. The preparation method of the modified organic acid calcium is the same as that of the embodiment 2. The preparation method of the ice melting agent is the same as that of the example 2.
Example 4
The present embodiment provides an insulator surface online monitoring device, which is different from embodiment 1 in that: the ice melting agent in example 1 is provided, and is prepared from the components and parts by weight shown in table 1, and the modified organic acid calcium is prepared from the components and the use amount shown in table 2.
Wherein the coupling agent is a silane coupling agent KH 550. The surfactant is polyoxyethylene lauryl ether.
The preparation method of the modified organic acid calcium comprises the following steps:
s1: adding calcium oxide into the bamboo vinegar liquid, and stirring at room temperature at a rotation speed of 350r/min for 12min to obtain organic acid calcium;
s2: sequentially adding montmorillonite and coupling agent into 7% phosphoric acid solution, heating in water bath at 55-60 deg.C, stirring at 250r/min for 8min, adding sodium polyphosphate, keeping temperature and rotation speed unchanged, and stirring for 40min to obtain modified montmorillonite;
s3: and (4) adding the modified montmorillonite and the carbon nano tube obtained in the step (S2) into the organic acid calcium obtained in the step (S1), stirring at the rotating speed of 250r/min for 12min at room temperature, oscillating for 1.5h in ultrasonic waves with the frequency of 40kHz and the power of 500W, filtering, drying and grinding to obtain the modified organic acid calcium.
The preparation method of the ice melting agent is the same as that of the example 2.
Example 5
The present embodiment provides an insulator surface online monitoring device, which is different from embodiment 1 in that: the ice melting agent in the example 1 is provided, and is prepared from the components shown in the table 1 in parts by weight, and the using amount of each component in the modified organic acid calcium is the same as that in the example 4.
Wherein the coupling agent is a silane coupling agent KH 560. The surfactant is polyoxyethylene lauryl ether. The preparation method of the modified organic acid calcium is the same as that of the embodiment 4. The preparation method of the ice melting agent is the same as that of the example 2.
Example 6
The present embodiment provides an insulator surface online monitoring device, which is different from embodiment 1 in that: the components and the parts by weight of the components of the ice melting agent in the embodiment 1 are the same as those in the embodiment 5, and the modified organic acid calcium is prepared from the components and the contents shown in the table 2.
Wherein the coupling agent is a silane coupling agent KH 550. The surfactant is alkylphenol polyoxyethylene.
The preparation method of the modified organic acid calcium comprises the following steps:
s1: adding calcium oxide into bamboo vinegar, and stirring at room temperature at a rotation speed of 400r/min for 10min to obtain organic acid calcium;
s2: sequentially adding montmorillonite and coupling agent into phosphoric acid solution with mass fraction of 8%, heating in water bath at 55-60 deg.C, stirring at 300r/min for 5min, adding sodium polyphosphate, keeping temperature and rotation speed unchanged, and continuously stirring for 30min to obtain modified montmorillonite;
s3: and (4) adding the modified montmorillonite and the carbon nano tube obtained in the step (S2) into the organic acid calcium obtained in the step (S1), stirring at the rotating speed of 300r/min for 10min at room temperature, oscillating for 1h in ultrasonic waves with the frequency of 40kHz and the power of 500W, filtering, drying and grinding to obtain the modified organic acid calcium.
The preparation method of the ice melting agent is the same as that of the example 2.
Example 7
The present embodiment provides an insulator surface online monitoring device, which is different from embodiment 1 in that: the components and the parts by weight of the ice melting agent in the embodiment 1 are the same as those in the embodiment 4, and the use amount of the components in the modified organic acid calcium is the same as that in the embodiment 6.
Wherein the coupling agent is a silane coupling agent KH 560. The surfactant is alkylphenol polyoxyethylene.
The preparation method of the modified organic acid calcium is the same as that of example 6. The preparation method of the ice melting agent is the same as that of the example 2.
Example 8
The present embodiment provides an insulator surface online monitoring device, which is different from embodiment 1 in that: the components and parts by weight of the ice melting agent in example 1 are as in example 3, and the modified organic acid calcium is prepared from the components shown in table 2.
Wherein the coupling agent is a silane coupling agent KH 560. The surfactant is alkylphenol polyoxyethylene.
The preparation method of the modified organic acid calcium is the same as that of example 6. The preparation method of the ice melting agent is the same as that of the example 2.
In addition, in examples 2 to 8, the particle size of the montmorillonite is 70 to 80nm, the particle size of the modified organic acid calcium is 20 to 100nm, and the preferable specific surface area of the carbon nanotube is not less than 233m2G, an inner diameter of 3-5nm, an outer diameter of 8-15nm and a length of 50 μm.
Comparative example 1
The components and parts by weight of the ice melting agent are the same as those in example 4, and the preparation method is the same as that in example 4, but the ice melting agent is different from example 4 in that potassium acetate is absent in the comparative example.
Comparative example 2
The components and parts by weight of the ice melting agent are the same as those in example 4, and the preparation method is the same as that in example 4, but the ice melting agent is different from example 4 in that sodium acrylate is absent in the comparative example.
Comparative example 3
The components and parts by weight of the ice melting agent are the same as those in example 4, and the preparation method is also the same as that in example 4, but the difference from example 4 is that in the comparative example, the organic acid calcium is not modified, namely, the preparation method of the organic acid calcium is that calcium oxide is added into bamboo vinegar liquid, and the bamboo vinegar liquid is stirred at the rotating speed of 350r/min for 12min at room temperature to obtain the organic acid calcium.
Comparative example 4
The components and parts by weight of the ice melting agent are the same as those in example 4, and the preparation method is the same as that in example 4, but the ice melting agent is different from example 4 in that in the comparative example, the montmorillonite is not modified in the process of modifying the organic acid calcium, and a phosphoric acid solution, a coupling agent and sodium polyphosphate are lacked.
The preparation method of the modified organic acid calcium comprises the following steps:
s1: adding calcium oxide into the bamboo vinegar liquid, and stirring at room temperature at a rotation speed of 350r/min for 12min to obtain organic acid calcium;
s2: montmorillonite and carbon nano tube are added into the organic acid calcium obtained in the step S1, and the specific surface area of the carbon nano tube is not less than 233m2The modified organic acid calcium is prepared by stirring the raw materials at the rotation speed of 250r/min for 12min, vibrating the raw materials in ultrasonic waves with the frequency of 40kHz and the power of 500W for 1.5h, filtering, drying and grinding the raw materials according to the proportion of the raw materials/g, wherein the inner diameter of the raw materials is 3-5nm, the outer diameter of the raw materials is 8-15nm, and the length of the raw materials is 50 microns.
Performance testing
Ice melting Rate test
500 ml of distilled water is injected into the ice tray, and the ice tray is placed in a freezer and frozen into ice for 12 hours at the temperature of 25 ℃ below zero. The refrigerator cover was opened, the temperature was adjusted to-15 ℃, and the ice trays were displayed. 10 grams of ice melting agent was evenly sprayed onto the surface of the ice tray within one minute. The melted water was collected at 5, 10, 20, 30 minutes and weighed, and the test results are shown in table 3.
TABLE 3 weight (g) of ice melting agent melted off Water for examples 2-8 and comparative examples 1-4
| 5min | 10min | 20min | 30min | |
| Example 2 | 7.35 | 16.87 | 27.95 | 35.77 |
| Example 3 | 7.33 | 16.86 | 27.90 | 35.78 |
| Example 4 | 7.96 | 17.22 | 28.53 | 38.49 |
| Example 5 | 7.84 | 17.13 | 28.41 | 38.33 |
| Example 6 | 7.88 | 17.17 | 28.47 | 38.40 |
| Example 7 | 7.57 | 17.01 | 28.32 | 38.26 |
| Example 8 | 7.49 | 16.94 | 28.18 | 38.15 |
| Comparative example 1 | 3.39 | 7.57 | 16.58 | 25.77 |
| Comparative example 2 | 3.55 | 8.46 | 17.89 | 26.34 |
| Comparative example 3 | 2.11 | 6.15 | 14.38 | 22.59 |
| Comparative example 4 | 2.87 | 6.98 | 15.22 | 23.87 |
For the test of other performances, see GB/T23851 and 2017, and the test results are shown in Table 4.
TABLE 4 test results of Ice melting agent Performance in examples 1-8 and comparative examples 1-4
The ice melting rates of the embodiments 2 to 8 of the invention are tested by combining the tables 3 and 4, and when the ice melting agent is spread on the ice surface to melt ice at-15 ℃, the crack of ice can be heard, a plurality of small pits are formed around the ice melting agent, and the ice surface with vertical and horizontal gullies is finally formed at the position of the ice melting agent, so that the ice melting effect is excellent in the low-temperature environment, and the ice melting rate is high. The freezing point is below minus 40 ℃, the damage to carbon steel and plant seeds is very small, and the comprehensive performance is excellent. The comparative example 1 omits potassium acetate, the ice melting rate of the ice melting agent is obviously reduced, the freezing point is obviously increased, and the comparative example 2 lacks sodium acrylate, so that the corrosion to steel and the damage to plant seeds are the greatest; compared with the prior art, the organic acid calcium is not modified, the ice melting rate of the ice melting agent is obviously reduced, and the ice point is obviously increased; comparative example 4 no modification of montmorillonite, poor ice melting effect in short time, and reduced comprehensive performance of the ice melting agent. The formula and the process of the invention have good adaptability, the raw materials supplement each other, and the performance of the material is obviously reduced if any raw material is lacked. While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. The utility model provides an insulator surface on-line monitoring device which characterized in that: the device comprises a mobile carrier, a storage bin arranged on the mobile carrier, a suspension mechanism arranged on the storage bin, a spraying mechanism arranged on the mobile carrier, a monitoring mechanism arranged on the mobile carrier and used for monitoring an insulator, and a control mechanism arranged on the mobile carrier and used for controlling the mobile carrier, the suspension mechanism, the monitoring mechanism and the spraying mechanism;
the mobile carrier comprises a walking module arranged on the power transmission line, a current transformer arranged on the walking module and a first electrostatic shielding net arranged on the walking module;
the lower end of the storage bin is provided with a storage supporting rod, the lower end of the storage supporting rod is provided with a first cloud platform, the lower end of the first cloud platform is provided with a storage supporting arm, and a second cloud platform is arranged at the end part of the storage supporting arm and is arranged on the walking module;
the walking module comprises a first walking wheel, a supporting rod arranged at the axle end of the first walking wheel, a compression telescopic rod arranged at the upper end part of the supporting rod, a walking motor arranged at the end part of the compression telescopic rod, and a second walking wheel arranged on the output shaft of the walking motor;
the monitoring mechanism comprises a first monitoring steering motor arranged on the supporting rod, a monitoring transverse supporting rod arranged on an output shaft of the first monitoring steering motor, a monitoring vertical supporting rod arranged at the end part of the monitoring transverse supporting rod, a second monitoring steering motor arranged at the upper end of the monitoring vertical supporting rod, a semicircular bracket arranged on an output shaft of the second monitoring steering motor, a plurality of high-definition cameras arranged on the semicircular bracket, a monitoring spray pipe communicated with the storage bin, and a plurality of monitoring nozzles arranged on the semicircular bracket and communicated with the monitoring spray pipe; the spraying mechanism comprises a spraying rod arranged on the supporting rod, an arc-shaped spraying frame arranged at the end part of the spraying rod, a plurality of spraying nozzles arranged on the arc-shaped spraying frame, a material conveying pipe arranged at the rear part of the plurality of spraying nozzles and communicated with the material storage bin, a micro booster pump arranged on the material conveying pipe, and an electromagnetic valve arranged on the material conveying pipe;
the ice melting agent is arranged in the storage bin and is prepared from the following components in parts by weight: 15-20 parts of modified organic acid calcium, 36-42 parts of 1, 2-propylene glycol, 12-17 parts of potassium acetate, 5-8 parts of surfactant, 8-10 parts of sodium acrylate, 2-3 parts of calcium ammonium nitrate and 52-58 parts of water;
the preparation method of the modified organic acid calcium comprises the following steps:
s1: adding calcium oxide into the bamboo vinegar liquid, and stirring at the rotation speed of 300-400r/min for 10-15min at room temperature to obtain organic acid calcium;
s2: sequentially adding montmorillonite and coupling agent into 6-8% phosphoric acid solution by mass fraction, heating in water bath at 55-60 deg.C, stirring at 200-;
s3: and (3) adding the modified montmorillonite and the carbon nano tube obtained in the step (S2) into the organic acid calcium obtained in the step (S1), stirring at the rotating speed of 200-300r/min for 10-15min at room temperature, oscillating for 1-1.5h in ultrasonic waves with the frequency of 40kHz and the power of 500W, filtering, drying and grinding to obtain the modified organic acid calcium.
2. The insulator surface on-line monitoring device according to claim 1, characterized in that: the suspension mechanism comprises a suspension bin arranged on the storage bin, a pressure storage tank arranged in the suspension bin, a suspension air bag arranged at an opening at the upper end of the suspension bin, an inflation electromagnetic valve arranged on the pressure storage tank, and an deflation electromagnetic valve arranged on the side wall of the suspension bin.
3. The insulator surface on-line monitoring device according to claim 2, characterized in that: the control mechanism comprises a second electrostatic shielding net arranged on the supporting rod, a PLC arranged in the second electrostatic shielding net and a storage battery connected with the PLC.
4. The insulator surface on-line monitoring device according to claim 1, characterized in that: the dosage ratio of each component in the modified organic acid calcium is as follows: phosphoric acid solution: calcium oxide: montmorillonite: coupling agent: sodium polyphosphate: the carbon nano tube is 100-105 g: 35-40 g: 10-12 g: 6-10 g: 1-1.2 g: 0.3-0.6 g: 1.5-2.2 g.
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| CN111551593A (en) * | 2020-04-23 | 2020-08-18 | 西安工程大学 | Insulator ice melting water content monitoring method based on RBF-NN |
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