CN112680102B - Bird damage prevention insulating coating and coating for AC/DC filter and preparation method of bird damage prevention insulating coating and coating - Google Patents
Bird damage prevention insulating coating and coating for AC/DC filter and preparation method of bird damage prevention insulating coating and coating Download PDFInfo
- Publication number
- CN112680102B CN112680102B CN202011516667.9A CN202011516667A CN112680102B CN 112680102 B CN112680102 B CN 112680102B CN 202011516667 A CN202011516667 A CN 202011516667A CN 112680102 B CN112680102 B CN 112680102B
- Authority
- CN
- China
- Prior art keywords
- parts
- coating
- filter
- rubber
- insulating coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Organic Insulating Materials (AREA)
Abstract
The invention relates to the technical field of insulating coatings, in particular to an alternating current-direct current filter bird damage prevention insulating coating, a coating and a preparation method thereof, which solve the defect that in the prior art, when flying birds enter a filter capacitor to move, short circuit among voltage difference parts of equipment is easily caused, so that unbalanced current protection action of the capacitor is caused, and the filter trips, and comprise the following components in parts by weight: silicon rubber, silicon resin, calcium tartrate, short-cut polyester fiber, nano zinc oxide, fulvic acid, aluminum oxide, calcium carbonate and silane auxiliary agent. The invention sprays insulating paint on the AC filter tower to insulate and cover the charged capacitor shell, the framework, the tube bus, the equalizing ring and other accessories, and forms insulating barriers among all groups of components with voltage difference of the filter, and after a bird enters the filter, once bridging among different potential points occurs, short circuit does not occur, so that the insulation of all charged bodies of the filter tower is realized, and the voltage difference can be resisted when the bird is short circuited.
Description
Technical Field
The invention relates to the technical field of insulating coatings, in particular to an alternating current-direct current filter bird damage prevention insulating coating, a coating and a preparation method thereof.
Background
Different numbers of filters are required to be configured for power transmission of the converter station and the transformer substation, and when birds enter capacitors of the filters to move, short circuit among voltage difference parts of equipment is easily caused, unbalanced current protection action of the capacitors is caused, and the filters trip. After the filter trips, capacitance value measurement needs to be carried out on the capacitors one by one, bridge arm capacitance measurement needs to be carried out on the capacitor tower, and the like, so that the overhaul workload is large. If the filter bank cannot meet the requirement of the absolute minimum filter, the power of the direct current system is reduced to cause load loss, and even a major accident of direct current locking is caused under a certain condition.
Existing solutions to prevent bird damage failure of filters include: (1) the use of various bird repelling technologies; (2) bird isolation netting or shielding; (3) an insulating baffle is additionally arranged between the tower layers; (4) the distance between layers is increased by modifying the filter and selecting insulators with larger sizes; (5) delays tripping etc. by modifying the unbalance protection setpoint; these measures are either not feasible for field implementation or proved to be poor in effect and not really effective in preventing bird damage.
The filter capacitor is a stainless steel shell, heat is continuously generated in the filter capacitor under the action of an electric field during operation, if the heat conductivity of a common insulating material covered on the capacitor is poor, the heat is accumulated, the service life of the filter capacitor is shortened, and even the capacitor is burnt; the covering layer on the filter capacitor can also generate an air interlayer if the covering layer is not firmly combined, so that the heat dissipation of the covering layer is further prevented to form temperature rise. Therefore, there are fatal side effects in using the conventional insulating shield partition on the filter.
The development of power transmission and transformation systems and the risk of invasion of naturally ecological birds after increase are urgent, and a new technical measure is needed to prevent the filter bridge connection tripping fault caused by flying birds or foreign matters, so that the safe operation of electric power facilities is realized.
In order to solve the bird trouble problem of filter tower condenser, various prevention schemes are proposed, including:
(1) the use of various bird repelling technologies;
(2) bird isolation netting or shielding;
(3) an insulating baffle is additionally arranged between the tower layers;
(4) a pillar insulator with larger structure height is selected to increase the interlayer distance, namely, the structural transformation of the capacitor tower is implemented;
(5) solving the bird trip problem by modifying the unbalanced protection fixed value;
the effect of the adopted relevant bird-preventing measures such as laser bird-dispelling, ultrasonic bird-dispelling, manual bird-dispelling and the like is not obvious; the method has the advantages that the unbalanced protection action time of the alternating current filter is prolonged, so that the risk of avalanche breakdown of a capacitor caused by overvoltage exists, and the method is not recommended to be used; the technical measures are either not feasible for field implementation or proved to have poor and satisfactory effect, and cannot really play a role in preventing bird damage.
Therefore, a new technical measure is needed to solve the problem of bird damage trip fault caused by bird or foreign matter invasion of ac and dc filters, so as to realize the harmony of the safe operation of the power facility and the bird living environment.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an anti-bird insulation technology for an alternating current filter and a direct current filter.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an alternating current-direct current filter bird damage prevention insulating coating which comprises the following components in parts by weight: 50-70 parts of silicone rubber, 10-30 parts of silicone resin, 10-20 parts of calcium tartrate, 1-3 parts of short-cut polyester fiber, 6-7 parts of nano zinc oxide, 15-18 parts of fulvic acid, 19-27 parts of aluminum oxide, 60-70 parts of calcium carbonate and 2-5 parts of silane assistant.
Preferably, the bird damage prevention insulating coating for the alternating current/direct current filter comprises the following components in parts by weight: 60 parts of silicon rubber, 20 parts of silicon resin, 15 parts of calcium tartrate, 2 parts of chopped polyester fiber, 6 parts of nano zinc oxide, 16 parts of fulvic acid, 22 parts of aluminum oxide, 65 parts of calcium carbonate and 4 parts of silane assistant.
Preferably, the silicone rubber is a mixture of methyl vinyl silicone rubber crude rubber and fluorosilicone rubber crude rubber in a weight ratio of 8: 94.
Preferably, the coating is encapsulated on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus fitting and an insulator fitting of the filter, and the coating is formed by vulcanizing the coating.
Preferably, the method for preparing the bird damage prevention insulating coating of the alternating current/direct current filter comprises the following steps:
s1: according to the weight parts, putting silicon rubber, silicon resin and short-cut polyester fiber into an internal mixer, heating to 80-90 ℃, and mixing and stirring for 25-35 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 140-150 ℃, kneading for 30-50 min at a vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 45-60 ℃, rolling, adding the rubber material into an internal mixer after rolling, adding calcium tartrate, mixing for 3-5 min, and discharging to obtain a dense mixing rubber;
s4: mixing the dense rubber again uniformly by an open mill, adding fulvic acid particles, and rolling into a film by a calender;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating.
Preferably, in S1, the silicone rubber, the silicone resin, and the chopped polyester fiber are put into an internal mixer, heated to 85 ℃, and mixed and stirred for 30 min.
Preferably, in the step S2, the nano zinc oxide, the aluminum oxide, the calcium carbonate and the silane assistant are added, the temperature is raised to 144 ℃, and the kneading time is 40 min.
Preferably, in S4, the operation temperature of the open mill is 100-120 ℃, the operation lasts for 10-20 min, and in S5, the vulcanization temperature is 150-180 ℃, and the vulcanization time is 10-30 min.
Preferably, the method for applying the bird damage prevention insulating coating to the alternating current/direct current filter comprises the following steps:
s1: planning a power failure period according to a maintenance plan of a converter station/transformer substation, and coordinating and arranging bird damage prevention insulating fluorosilicone coating engineering of AC and DC filter equipment in a station;
s2: according to the planned workload and the operation time, a project manager is established, a construction operation team is organized, construction mechanical equipment is equipped, and the operation implementation scheme is refined;
s3: the filter field capacitor tower is insulated by using an alternating current-direct current filter bird damage prevention insulation coating, and the method comprises the steps of coating a capacitor shell, a lead tube bus, a grading ring, a metal framework and a brace electrified part.
Preferably, a method for manufacturing a bird damage prevention heat conduction insulating coating for an ac/dc filter comprises the following steps:
s1, coating cleaning agents on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus fitting and an insulator fitting of the filter, and cleaning and drying the components;
s2, coating a heat-conducting insulating glue coating to form a heat-conducting insulating isolation layer with the thickness of 0.5-1.5 mm on the capacitor shell, the tubular bus, the equalizing ring, the C-shaped steel beam, the tubular bus hardware fitting and the insulator hardware fitting;
s3, attaching heat-conducting insulating glue coating pre-vulcanized parts at sharp positions of the bolts, the steel members and the hardware fittings, wherein the thickness of the pre-vulcanized parts is 0.5-1.5 mm;
s4, the supporting porcelain insulator of the filter, the capacitor sleeve, the cable and the joint are shielded by a film or a sleeve, and the film or the sleeve is removed after the heat-conducting insulating glue is coated.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention sprays insulating paint on the AC filter tower to insulate and cover all charged capacitor shells, frameworks, pipe nuts, equalizing rings and other accessories, and forms insulating barriers among all groups of components with voltage difference of the filter.
2. According to the invention, the hydrophobicity of the finally obtained insulating glue layer can be effectively improved by adding the calcium tartrate during the coiling operation, and the finally obtained insulating coating has the advantages of stronger curing degree, no deformation and better quality because the calcium tartrate loses all crystal water at high temperature.
3. In the open mill stage of the open mill, the granular fulvic acid is added to assist in rolling, so that the insulating coating after cold feeding and vulcanization has strong adhesive force, is firmly adhered to the capacitor paint film, does not influence the adhesive property of the paint film, effectively ensures the insulating effect and does not drop.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control. When "mass, concentration, temperature, time, or other value or parameter is expressed as a range, preferred range, or as a range defined by a list of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, a range of 1 to 50 should be understood to include any number, combination of numbers, or subrange selected from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, or 50, and all fractional values between the above integers, e.g., 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, and 1.9. With respect to sub-ranges, specifically consider "nested sub-ranges" that extend from any endpoint within the range. For example, nested sub-ranges of exemplary ranges 1-50 may include 1-10, 1-20, 1-30, and 1-40 in one direction, or 50-40, 50-30, 50-20, and 50-10 in another direction. "
The present invention is further illustrated below with reference to specific examples in which various processes and methods not described in detail are conventional methods well known in the art. Materials, reagents, devices, instruments, apparatuses and the like used in the following examples are commercially available unless otherwise specified.
Example one
The invention provides an alternating current-direct current filter bird damage prevention insulating coating (fluorosilicone rubber) which comprises the following components in parts by weight: 50 parts of silicon rubber, 10 parts of silicon resin, 10 parts of calcium tartrate, 1 part of chopped polyester fiber, 6 parts of nano zinc oxide, 15 parts of fulvic acid, 19 parts of aluminum oxide, 60 parts of calcium carbonate and 2 parts of silane assistant.
Wherein the silicone rubber is a mixture of methyl vinyl silicone rubber crude rubber and fluorosilicone rubber crude rubber in a weight ratio of 8: 94.
Specifically, the coating is encapsulated on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus hardware fitting and an insulator hardware fitting of the filter, and the coating is formed by vulcanizing the coating.
In an embodiment, the preparation method of the bird damage prevention insulating coating (fluorosilicone rubber) for the alternating current/direct current filter comprises the following steps:
s1: according to the weight parts, putting the silicon rubber, the silicon resin and the short-cut polyester fiber into an internal mixer, heating to 80 ℃, and mixing and stirring for 25 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 140 ℃, kneading for 30min under the vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 45 ℃, then rolling, adding the rubber material into an internal mixer after rolling, simultaneously adding calcium tartrate, mixing for 3min, and then discharging to obtain dense rubber;
s4: mixing the dense rubber uniformly again by an open mill, adding fulvic acid particles, and rolling into a film by a calender, wherein the operation temperature of the open mill is 100 ℃, and the operation lasts for 10 min;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating (fluorosilicone rubber), wherein the vulcanization temperature is 150 ℃, and the vulcanization time is 10 min.
Example two
The invention provides an alternating current-direct current filter bird damage prevention insulating coating (fluorosilicone rubber) which comprises the following components in parts by weight: 55 parts of silicon rubber, 15 parts of silicon resin, 14 parts of calcium tartrate, 2 parts of chopped polyester fiber, 6 parts of nano zinc oxide, 16 parts of fulvic acid, 22 parts of aluminum oxide, 64 parts of calcium carbonate and 3 parts of silane assistant.
Wherein the silicone rubber is a mixture of methyl vinyl silicone rubber crude rubber and fluorosilicone rubber crude rubber in a weight ratio of 8: 94.
Specifically, the coating is encapsulated on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus hardware fitting and an insulator hardware fitting of the filter, and the coating is formed by vulcanizing the coating.
In an embodiment, the preparation method of the bird damage prevention insulating coating (fluorosilicone rubber) for the alternating current/direct current filter comprises the following steps:
s1: according to the weight parts, putting the silicon rubber, the silicon resin and the short-cut polyester fiber into an internal mixer, heating to 84 ℃, mixing and stirring for 30 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 144 ℃, kneading for 38min at a vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 50 ℃, rolling, adding the rubber material into an internal mixer after rolling, adding calcium tartrate at the same time, mixing for 4min, and discharging to obtain dense rubber;
s4: mixing the dense rubber uniformly again by an open mill, adding fulvic acid particles, and rolling into a film by a calender, wherein the operation temperature of the open mill is 110 ℃, and the operation lasts for 14 min;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating (fluorosilicone rubber), wherein the vulcanization temperature is 160 ℃, and the vulcanization time is 20 min.
EXAMPLE III
The invention provides an alternating current-direct current filter bird damage prevention insulating coating (fluorosilicone rubber) which comprises the following components in parts by weight: 65 parts of silicon rubber, 20 parts of silicon resin, 18 parts of calcium tartrate, 2 parts of chopped polyester fiber, 7 parts of nano zinc oxide, 17 parts of fulvic acid, 25 parts of aluminum oxide, 68 parts of calcium carbonate and 4 parts of silane assistant.
Wherein the silicone rubber is a mixture of methyl vinyl silicone rubber crude rubber and fluorosilicone rubber crude rubber in a weight ratio of 8: 94.
Specifically, the coating is encapsulated on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus hardware fitting and an insulator hardware fitting of the filter, and the coating is formed by vulcanizing the coating.
In an embodiment, the preparation method of the bird damage prevention insulating coating (fluorosilicone rubber) for the alternating current/direct current filter comprises the following steps:
s1: according to the weight parts, putting the silicon rubber, the silicon resin and the short-cut polyester fiber into an internal mixer, heating to 88 ℃, and mixing and stirring for 32 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 148 ℃, kneading for 45min at a vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 55 ℃, then rolling, adding the rubber material into an internal mixer after rolling, simultaneously adding calcium tartrate, mixing for 4min, and then discharging to obtain dense rubber;
s4: mixing the dense rubber uniformly again by an open mill, adding fulvic acid particles, and rolling into a film by a calender, wherein the operation temperature of the open mill is 115 ℃, and the operation lasts for 18 min;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating (the fluorosilicone rubber), wherein the vulcanization temperature is 170 ℃, and the vulcanization time is 25 min.
Example four
The invention provides an alternating current-direct current filter bird damage prevention insulating coating (fluorosilicone rubber) which comprises the following components in parts by weight: 70 parts of silicon rubber, 30 parts of silicon resin, 20 parts of calcium tartrate, 3 parts of chopped polyester fiber, 7 parts of nano zinc oxide, 18 parts of fulvic acid, 27 parts of aluminum oxide, 70 parts of calcium carbonate and 5 parts of silane assistant.
Wherein the silicone rubber is a mixture of methyl vinyl silicone rubber crude rubber and fluorosilicone rubber crude rubber in a weight ratio of 8: 94.
Specifically, the coating is encapsulated on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus hardware fitting and an insulator hardware fitting of the filter, and the coating is formed by vulcanizing the coating.
In an embodiment, the preparation method of the bird damage prevention insulating coating (fluorosilicone rubber) for the alternating current/direct current filter comprises the following steps:
s1: according to the weight parts, putting the silicon rubber, the silicon resin and the short-cut polyester fiber into an internal mixer, heating to 90 ℃, and mixing and stirring for 35 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 150 ℃, kneading for 50min under the vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 60 ℃, rolling, adding the rubber material into an internal mixer after rolling, adding calcium tartrate at the same time, mixing for 5min, and discharging to obtain dense rubber;
s4: mixing the dense rubber uniformly again by an open mill, adding fulvic acid particles, and rolling into a film by a calender, wherein the operation temperature of the open mill is 120 ℃, and the operation lasts for 20 min;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating (fluorosilicone rubber), wherein the vulcanization temperature is 180 ℃, and the vulcanization time is 30 min.
In the embodiment, the manufacturing method of the heat-conducting insulating coating for preventing bird damage of the alternating current-direct current filter is further characterized by comprising the following steps:
s1, coating cleaning agents on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus fitting and an insulator fitting of the filter, and cleaning and drying the components;
s2, coating a heat-conducting insulating glue coating to form a heat-conducting insulating isolation layer with the thickness of 0.5-1.5 mm on the capacitor shell, the tubular bus, the equalizing ring, the C-shaped steel beam, the tubular bus hardware fitting and the insulator hardware fitting;
s3, attaching heat-conducting insulating glue coating pre-vulcanized parts at sharp positions of the bolts, the steel members and the hardware fittings, wherein the thickness of the pre-vulcanized parts is 0.5-1.5 mm;
s4, the supporting porcelain insulator of the filter, the capacitor sleeve, the cable and the joint are shielded by a film or a sleeve, and the film or the sleeve is removed after the heat-conducting insulating glue is coated.
Comparative example 1
An insulating coating (fluorosilicone rubber) comprises the following components in parts by weight: 70 parts of silicon rubber, 30 parts of silicon resin, 3 parts of chopped polyester fiber, 7 parts of nano zinc oxide, 18 parts of fulvic acid, 27 parts of aluminum oxide, 70 parts of calcium carbonate and 5 parts of silane auxiliary agent.
Wherein the silicone rubber is a mixture of methyl vinyl silicone rubber crude rubber and fluorosilicone rubber crude rubber in a weight ratio of 8: 94.
Specifically, the coating is encapsulated on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus hardware fitting and an insulator hardware fitting of the filter, and the coating is formed by vulcanizing the coating.
The preparation method of the insulating coating (fluorosilicone rubber) comprises the following steps:
s1: according to the weight parts, putting the silicon rubber, the silicon resin and the short-cut polyester fiber into an internal mixer, heating to 90 ℃, and mixing and stirring for 35 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 150 ℃, kneading for 50min under the vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 60 ℃, rolling, adding the rubber material into an internal mixer after rolling, and discharging after 5min to obtain dense rubber;
s4: mixing the dense rubber uniformly again by an open mill, adding fulvic acid particles, and rolling into a film by a calender, wherein the operation temperature of the open mill is 120 ℃, and the operation lasts for 20 min;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating (fluorosilicone rubber), wherein the vulcanization temperature is 180 ℃, and the vulcanization time is 30 min.
Comparative example No. two
An insulating coating (fluorosilicone rubber) comprises the following components in parts by weight: 70 parts of silicon rubber, 30 parts of silicon resin, 20 parts of calcium tartrate, 3 parts of chopped polyester fiber, 7 parts of nano zinc oxide, 27 parts of aluminum oxide, 70 parts of calcium carbonate and 5 parts of silane auxiliary agent.
Wherein the silicone rubber is a mixture of methyl vinyl silicone rubber crude rubber and fluorosilicone rubber crude rubber in a weight ratio of 8: 94.
Specifically, the coating is encapsulated on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus hardware fitting and an insulator hardware fitting of the filter, and the coating is formed by vulcanizing the coating.
The preparation method of the insulating coating (fluorosilicone rubber) comprises the following steps:
s1: according to the weight parts, putting the silicon rubber, the silicon resin and the short-cut polyester fiber into an internal mixer, heating to 90 ℃, and mixing and stirring for 35 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 150 ℃, kneading for 50min under the vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 60 ℃, rolling, adding the rubber material into an internal mixer after rolling, adding calcium tartrate at the same time, mixing for 5min, and discharging to obtain dense rubber;
s4: mixing the dense rubber uniformly again by an open mill, rolling into a film by a calender, wherein the operation temperature of the open mill is 120 ℃, and the operation lasts for 20 min;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating (fluorosilicone rubber), wherein the vulcanization temperature is 180 ℃, and the vulcanization time is 30 min.
Comparative example No. three
An insulating coating (fluorosilicone rubber) comprises the following components in parts by weight: 70 parts of silicon rubber, 30 parts of silicon resin, 3 parts of chopped polyester fiber, 7 parts of nano zinc oxide, 27 parts of aluminum oxide, 70 parts of calcium carbonate and 5 parts of silane auxiliary agent.
Wherein the silicone rubber is a mixture of methyl vinyl silicone rubber crude rubber and fluorosilicone rubber crude rubber in a weight ratio of 8: 94.
Specifically, the coating is encapsulated on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus hardware fitting and an insulator hardware fitting of the filter, and the coating is formed by vulcanizing the coating.
The preparation method of the insulating coating (fluorosilicone rubber) comprises the following steps:
s1: according to the weight parts, putting the silicon rubber, the silicon resin and the short-cut polyester fiber into an internal mixer, heating to 90 ℃, and mixing and stirring for 35 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 150 ℃, kneading for 50min under the vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 60 ℃, rolling, adding the rubber material into an internal mixer after rolling, and discharging after 5min to obtain dense rubber;
s4: mixing the dense rubber uniformly again by an open mill, rolling into a film by a calender, wherein the operation temperature of the open mill is 120 ℃, and the operation lasts for 20 min;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating (fluorosilicone rubber), wherein the vulcanization temperature is 180 ℃, and the vulcanization time is 30 min.
After the insulating coatings (fluorosilicone rubbers) prepared in the first to fourth examples and the first to third comparative examples were applied, tests were performed, and the results are shown in table 1 below:
in the implementation process of the insulating coating (fluorosilicone rubber):
construction process
Planning a power failure period according to a maintenance plan of a converter station/transformer substation, and coordinating and arranging bird damage prevention insulating fluorosilicone coating engineering of AC and DC filter equipment in a station. According to the planned workload and the operation time, a project manager is established, a construction operation team is organized, construction mechanical equipment is equipped, the safety, the quality, the process, the progress and the civilized production responsibility are tamped, and the work implementation scheme is refined.
Second, engineering scope
The filter field capacitor tower is insulated by adopting an alternating current-direct current filter bird damage prevention insulating coating (fluorosilicone rubber), and comprises a capacitor shell, a lead pipe bus, a grading ring, a metal framework (not containing an insulator), a brace and other charged parts.
Third, material requirements
The bird damage prevention insulating coating (fluorosilicone rubber) of the alternating current-direct current filter meets the requirements of design requirements, technical specifications and related standards. The color of the bird damage prevention insulation coating is generally gray, and can be additionally determined according to the requirement.
Capacitor interlayer combination insulation experiment: the bare capacitor layers are insulated only by air gaps, and when birds enter the gaps, good conductor short circuit tripping is formed.
After the fluorosilicone is coated, two insulating layers are formed between capacitor layers and form combined insulation with the air gap, when a bird enters the layers, the bird body is in short circuit with the air gap, and the voltage resistance of the insulation is completely loaded on the fluorosilicone insulating layer.
Fourth, the heat stability test of the insulating coating for preventing bird damage of the AC/DC filter
Placing 3 tested capacitors (the surfaces of the capacitors are sprayed with the bird damage prevention insulating coating of the alternating current-direct current filter in the embodiment 1, the average thickness of the coating is 1.158mm) in a closed constant temperature box of static air, wherein the placing distance of the 3 capacitors is 80mm, the air temperature in the closed box is kept at 55 +/-1 ℃, the power frequency test voltage applied to the capacitors is 12.44kw for 48 hours, measuring the temperature of the shell close to the top for 4 times in the last 6 hours, ensuring that the temperature rise change in the last 6 hours is not more than 1K, and measuring the capacitance and the loss tangent value of the capacitors before and after the test; the thermocouple is buried in the center of the center line of the large surface of the shell from the bottom 2/3; the temperature of the hottest point of the test core with the core thermocouple is less than or equal to 80 ℃ at the end of the test.
The temperature test data during the last 6h of the thermal stability test procedure are shown in table 1.
TABLE 1
The capacitance and loss tangent test data for the test articles before and after the thermal stability test and at the end of the thermal stability test are shown in Table 2.
TABLE 2
Fifthly, after the bird damage prevention insulating coating of the alternating current/direct current filter in the embodiment 1 to 4 is coated (sprayed or brushed) on the surface of the metal material test piece, a verification test is carried out on the withstand voltage of the coating, and technical data are provided for bird damage prevention measures between the capacitor shell and the steel beam of the filter capacitor tower.
1 breakdown Strength test of insulating coating
1.1 adding insulating paint into a mould, volatilizing VOC, and vulcanizing at room temperature to prepare a test piece with a specified thickness;
1.2 the test piece needs to be fully vulcanized, the appearance is flat and free of defects, the layer thickness of the test piece is accurately measured, and the thickness of the planned electrode position is measured;
1.3 clamping the test piece between the electrodes to carry out alternating current breakdown voltage test;
after a test piece with the thickness of 1.4 mm or more is clamped between electrodes, the test piece is immersed in benzyl toluene insulating oil for carrying out an alternating current breakdown voltage test.
2 plate-plate (pipe) insulating coating interlaminar withstand voltage test
2.1 coating the insulating coating on a metal sheet (plate) and a rectangular or round metal tube, and vulcanizing to prepare a fluorosilicone insulating adhesive coating sample of a metal base material;
2.2 inspecting the coating appearance of the sample to be flat and free of defects, dividing the surface of the plate-shaped or tubular sample into a plurality of areas of 100mm multiplied by 100mm, and measuring the thickness of each grid area by using a thickness gauge;
2.3 the samples are arranged on the test bed, one sample is grounded, and the other sample is connected with an alternating voltage boosting device;
2.4 boosting the voltage at the speed of 2-3kV/s, carrying out the AC breakdown voltage test of the sample, and checking the breakdown point of the sample after the test is finished.
2.5 the AC withstand voltage test was carried out by increasing the voltage at a rate of 2 to 3kV/s at test voltages of 27.52kV (30 kV), 34.28kV (35 kV) and 37.8kV (40 kV), and the test was completed to examine the electrode contact point state of the sample.
(I) test equipment
1 coating thickness gauge, model: positecor 6000, range: -, index value/precision: 1 μm.
2 rubber thickness gauge, model: III-10, range: 0-10mm, index value/precision: 0.01 mm.
3 test transformers, type: TDM, rated output voltage: 100kV, rated output current: 100 mA.
4 test transformers, type: YDJ, rated output voltage: 100kV, rated output current: 300 mA.
5 voltage divider, model: FRC-100 kV.
6 exchange microammeter, type: WB-I.
The above test equipment is qualified by Handan City technical quality supervision office, and is in effective period.
(II) concrete test procedure
1 insulating coating sample (vulcanization test piece)
The insulation coating solution is stirred and mixed uniformly, and is stirred uniformly (for 1-2 min) or stirred by opening a barrel, and then is kept stand for 1-2 min.
The mould is placed on a platform scale, then the fluorine-silicon insulating glue is poured into the mould, and the actual dosage can be estimated and measured according to theory.
It is planned that a test piece of 1mm can be poured once by the required amount, the size of 2mm or more, and pouring is required in multiple times, and the amount poured each time is controlled to be 1mm of required weight.
The mold is moved to a horizontal desktop for placing, the mold does not move any more, the ventilation is good, the mold cannot be exposed to the sun or rain, the operation process can be carried out in a ventilation cabinet, and then the mold is naturally vulcanized at room temperature.
The specification of the fluorosilicone insulating adhesive sample comprises: 0.5mm, 1.0mm, 1.5mm and 2.0mm thick.
2 sample of insulating coating for metal plate
The insulation coating solution is stirred and mixed uniformly, and is stirred uniformly (for 1-2 min) or stirred by opening a barrel, and then is kept stand for 1-2 min.
The sheet metal with a thickness of 0.2-0.3mm is cut into square boards of about 500mm by 350mm, and then the insulating coating is poured onto the boards, the actual amount being measured in a theoretical estimation.
The test board is moved to a horizontal table top for placing, does not move any more, keeps good ventilation, cannot be exposed to the sun and rain, is well protected from pollution damage, and then waits for room temperature for natural vulcanization.
And simulating a filter tower steel beam by using a rectangular square tube or a channel steel, and spraying insulating coating to manufacture a sample.
Breakdown voltage test of insulating coating
1) Checking the state of the insulating coating piece to achieve complete vulcanization, and cleaning the test piece by using alcohol;
2) respectively measuring the thickness of test pieces on a rubber thickness gauge, wherein the testing position of each test piece is within 25 multiplied by 25mm of a to-be-clamped electrode, and measuring data of 3 points;
3) the test piece is clamped on the test electrode, and the equal-diameter electrode is adopted for testing, so that the proper clamping force is kept between the electrodes without causing the deformation of the test piece;
4) the test pieces with the thickness of 0.5mm and 1.0mm are tested in the air, and the electrodes and the test pieces with the thickness of 1.5mm and 2.0mm are tested by immersing in benzyl toluene insulating oil.
The breakdown voltage test data is shown in table 3.
TABLE 3 breakdown Voltage test of insulating coating
| Test specimen | Thickness measurement 1 | Thickness measurement 2 | Thickness measurement 3 | Median thickness | Breakdown voltage of AC kV | Electric strength kV/mm |
| Example 1 | 0.52 | 0.52 | 0.53 | 0.52 | 14.1 | 27.2 |
| Example 2 | 0.56 | 0.57 | 0.56 | 0.56 | 15.3 | 27.3 |
| Example 3 | 0.51 | 0.50 | 0.51 | 0.51 | 13.8 | 27.0 |
| Example 4 | 1.02 | 0.99 | 1.01 | 1.01 | 26.3 | 26.1 |
Note: the thickness of the test piece is in mm.
Withstand voltage test of 4-layer interlayer coating insulating coating
1) Establishment of interlayer voltage test device
In order to simulate 7632ACF (BP11/BP13) AC filter tower operation practice, a voltage test device with an interlayer distance of 350mm is established. The test device comprises a test framework consisting of a step-up transformer, a voltage divider and an insulating part, a grounding electrode and a measurement system. In order to simulate the most extreme harsh condition in bird damage faults, a copper wire is used for short-circuiting the space distance between two insulating layers, and the short-circuited copper wire is in direct contact with two planes between the layers without pressure.
2) The test site is a high-pressure test hall, the ambient temperature is 25-30 ℃, the relative humidity is 55% -70%, and no other environmental interference exists.
3) And inspecting the sample of the insulating coating layer of the metal plate, wherein the coating layer has a flat appearance and is free from pits, bubbles or mechanical impurities, and the thickness of the adhesive layer is measured by a PositeTector 6000 thickness gauge in the center and the peripheral 100mm multiplied by 100mm area of the surface of the sample.
4) The test sample is arranged on a test framework (platform), is placed flatly and firmly, and is checked for the insulation distance between the test sample and the test bench;
5) go up test piece (board) and insert high voltage test device, lower test piece (board) is connected with the earthing pole, and the wiring point of test piece is clean level and smooth, and the contact is good, firm in connection.
6) Interlayer short circuit of foreign matter is simulated by a bare copper wire conductor with the diameter of phi 0.25mm (bird body 10)3The resistance value of the omega level is ignored), the conductor is kept in moderate contact without pressure, and the test piece is not changedAnd (4) shaping.
7) The test voltage was increased to the set interlayer voltage for about 20s, and the voltage was maintained for 60 s.
The test voltage is 30kV, 35kV and 40kV respectively, and the existence of discharge phenomenon or surface creepage of the sample is observed in the voltage endurance process.
8) After the test is finished, the intact state of the sample is checked, and whether ablation or discharge traces exist around the conductor simulating the short circuit of the foreign matter.
The interlayer voltage 1minn endurance test data is shown in table 4.
TABLE 4 interlaminar withstand voltage test for insulating coating
Note: the thickness of the fluorosilicone layer of the sample is unit μm.
5-layer coated fluorosilicone gel breakdown voltage test
The breakdown voltage test of the insulating coating material sample of the upper and lower plates (beam) was performed in the above interlayer voltage test apparatus.
1) The test sample is arranged on a test bed, the interlayer distance of the test sample is 350mm, the test sample is placed smoothly and firmly, and the insulation distance between the test sample and the test bed is checked;
2) simulating interlayer short circuit of foreign matters by using a bare copper wire conductor with the diameter phi of 0.25mm, and keeping the short circuit conductor in proper contact without pressure so as not to cause deformation of a test piece;
3) the upper and lower samples (plate-plate or steel beam plate) and the test device are correctly connected, the connection points of the samples are clean and flat, the contact is good, and the connection is firm;
4) boosting at the speed of 2-3kV/s, and performing an alternating current breakdown voltage test on the sample, wherein the boosting breakdown time is controlled to be about 10-20 s;
5) creepage occurs in the test process, and the creepage phenomenon is prevented by adopting an insulating plate to seal the edge;
6) after the test is finished, the breakdown point of the sample is checked, and the thickness of the insulating layer at the breakdown point is measured.
The interlayer breakdown voltage test data are shown in table 5.
TABLE 5 interlaminar breakdown Voltage test for insulating coating
| Test group | Thickness of upper layer | Thickness of lower layer | Breakdown voltage | Test results |
| Example 1 | 585 | 972 | 35.2 | Breakdown of |
| Example 2 | 562 | 1089 | 36.7 | Breakdown of |
| Example 3 | 556 | 1023 | 35.7 | Breakdown of |
| Example 4 | 824 | 995 | 38.9 | Breakdown of |
Note: the thickness of the fluorosilicone layer of the sample is unit μm.
(III) analysis of test results
1. Electrical strength of insulating coating
The test pieces with the layer thickness of 0.5mm, 1.0mm, 1.5mm and 2.0mm show that the breakdown strength of the insulating coating is between 23.5kV/mm and 27.3kV/mm, and the sample with the thin layer thickness has high breakdown strength and shows a decreasing trend along with the increase of the layer thickness. The breakdown strength of the coating material with the evaluation thickness of 1.0mm specified by the standard is 25.3-26.1 kV/mm; the minimum value of the breakdown strength of the layer thickness of 2.0mm is 23.5 kV/mm.
2. Compressive and insulating strength of interlayer fluorosilicone gel
Tests show that when the interlayer voltage of the capacitor is 40kV (37.8kV), the thicknesses of the insulating coating layers on the surface of the capacitor shell and the surface of the steel beam are respectively not less than 1.0mm and the insulating coating layers pass the test for resisting 1 min. When the interlayer voltage of the capacitor is 35kV (31.92kV, 32.45kV and 34.28kV), the thicknesses of the insulating coating layers on the surface of the capacitor shell and the surface of the steel beam are respectively not less than 1.0mm and 0.8mm, and the insulating coating layers pass the test of tolerance for 1 min. When the interlayer voltage of the capacitor is 30kV (27.52kV), the thicknesses of the insulating coating layers on the surface of the capacitor shell and the surface of the steel beam are respectively not less than 1.0mm and 0.5mm, and the insulating coating layers pass the test of tolerance for 1 min.
The breakdown voltage test shows that the breakdown voltage is 35.2-36.7kV when the thicknesses of the insulating coating coatings of the upper and lower metal plates between layers are 1.0mm and 0.5mm respectively; the breakdown voltage of the upper coating and the lower coating is 38.9-39.5kV when the thicknesses of the upper coating and the lower coating are 1.0mm and 0.8mm respectively; the breakdown voltage of the upper and lower coating layers is 44.1-45.8kV when the thickness is 1.0mm and 1.0mm respectively. The correlation between the breakdown voltage and the withstand voltage of the interlayer insulating coating is about 1.1-1.15: 1.0.
(IV) conclusion
According to the GB/T1408.1-2006 standard and other standards, the multifunctional insulating coating special for the A/D-LSFJ alternating current and direct current filter is subjected to breakdown strength and voltage resistance tests, the minimum value of the breakdown strength reaches 23.5kV/mm (2.0mm sample), and the interlaminar insulation withstand voltage of a plate-plate (tube/beam) is respectively (1.0mm +0.5mm)/30kV, (1.0mm +0.8mm)/35kV and (1.0mm +1.0mm)/40 kV.
Therefore, according to the parameters such as the number, the structural form and the interlayer voltage of the filter equipment of the converter station, an adaptive insulation coating protection scheme special for the filter is implemented.
Sixthly, adhesion test: the results of an adhesion test performed by coating an insulating coating (fluorosilicone rubber) with a capacitor case plate and a steel beam provided by the west ampere ABB power capacitor co.
And (4) vertically and crossly scribing test grids on the insulating coating by using a grid scribing test instrument, wherein the grid scribing depth respectively reaches the metal interface of the capacitor paint interface layer and the substrate, and the adhesion state of the grid scribing test instrument is checked to reach 0 grade (highest grade).
In order to further verify the influence of the fluorine silica gel layer on the adhesive force under the conditions of humidity, water spraying and temperature change, a tolerance test and a heat resistance test are respectively carried out:
after the coating is soaked in tap water for 72 hours, the adhesion force of the coating is detected to be unchanged again, and the cross-cut method is still 0 grade.
After the constant temperature and humidity of 100 +/-2 ℃ and the relative humidity of 85 +/-5% for 72 hours, the coating has no discoloration and wrinkling after the test sample detection, and the adhesive force of the cross-cut method is 0 grade.
Seventhly, other effects:
excellent electrical insulation performance: the insulation protection between capacitor layers and among each potential point is improved, and the short-circuit fault of flying birds, small animals or foreign matters of equipment in the station is eliminated;
the heat conduction performance is excellent, the heat of the capacitor can be released in time, and the negative effects caused by heat energy accumulation and overhigh temperature are prevented;
the capacitor shell and the metal framework are good in adhesive force and high in strength, the insulating coating is firmly bonded with various materials of the filter, and no air gap exists, so that electric partial discharge is prevented;
the flame retardant has self-extinguishing property and obvious flame retardant effect, and reaches FV-0 level;
the corrosion resistance is good, and the corrosion of salt mist, acid rain and atmospheric pollutants to the material is prevented;
moisture resistance and hydrophobicity, and the insulation and protection of the capacitor are improved;
ozone resistance, ultraviolet resistance, radiation resistance and aging resistance, and can realize long-period safe operation.
Eighthly, checking the encapsulation effect in situ
a. Appearance and physical and chemical Properties Table 6
b. Pulse withstand voltage test
In the test, a porcelain insulator zero value detection device is utilized to apply 50kV pulse voltage to the bird-damage-prevention insulation coating, and the insulation performance of the bird-damage-prevention insulation encapsulation coating of the filter is observed.
In the test process, if the electric arc is not found to pass between the two electrodes of the bird damage prevention insulation encapsulating layer, the detection device does not report a zero value, and the pulse withstand voltage test is qualified. If electric arcs pass through the space between the two electrodes of the bird damage prevention insulation encapsulating layer, the phenomenon indicates that a conductive channel exists in the bird damage prevention insulation encapsulating layer, the electric arcs are connected with the inner electrode and the outer electrode through the conductive channel, and a detection device reports that zero value occurs, so that the pulse withstand voltage test is unqualified. The method effectively detects the insulating property of the insulating encapsulation coating for preventing bird damage.
According to the above table 6, it is obvious that in the first to fourth examples, the insulating coating used has a flat appearance, complete coating, no missing coating, no accumulation and no dripping; the glue layer is hardened without plastic deformation, and no indentation is formed by finger touch; the thickness reaches the design layer thickness, and the requirements of the minimum value and the average value are met; the adhesive is firmly bonded with a capacitor paint film, does not influence the adhesive property of the paint film, and is firmly bonded with metals such as aluminum, steel and the like; the hydrophobicity test of the insulating rubber layer reaches HC1 grade, and all the data are better.
In the fourth embodiment and the first embodiment, calcium tartrate is not added during roll banburying, so that after the insulating coating is coated, the glue layer is hardened and has plastic deformation without indentation by touch, and meanwhile, the hydrophobicity test of the insulating glue layer reaches HC2 grade, only separated water drops are formed, and most of the water drops are between 50 and 80 degrees.
In the fourth embodiment and the second embodiment, which have the same values, granular fulvic acid is added for assistance before rolling by a calender, so that after the insulating coating is coated, the insulating coating is not firmly adhered to a capacitor paint film, the capacitor paint film falls off, and the adhesive force is obviously reduced.
In the fourth embodiment and the third embodiment, calcium tartrate is not added during rolling and banburying, and granular fulvic acid is not added for assistance before rolling by a calender, so that after the insulating coating is coated, a glue layer is hardened and has plastic deformation, no indentation is caused by finger touch, the adhesion with a capacitor paint film is not firm, the falling phenomenon exists, the hydrophobicity test of the insulating glue layer reaches HC2 grade, and the insulating protection effect is greatly influenced.
In summary, the invention sprays insulating paint on the AC filter tower to insulate and cover all charged capacitor shells, frameworks, pipe nuts, equalizing rings and other accessories, and forms insulating barriers among all groups of components with voltage difference of the filter, so that once a bird enters the filter, bridging among different potential points occurs, short circuit does not occur, insulation of all charged bodies of the filter tower is realized, and the voltage difference can be resisted when the bird is short circuited.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides an alternating current-direct current filter prevents bird pest insulating coating, this coating encapsulates on condenser casing, the female, equalizer ring, C shape girder steel, the female gold utensil of pipe and the insulator gold utensil of wave filter, its characterized in that includes following composition according to the part by weight: 50-70 parts of silicone rubber, 10-30 parts of silicone resin, 10-20 parts of calcium tartrate, 1-3 parts of short-cut polyester fiber, 6-7 parts of nano zinc oxide, 15-18 parts of fulvic acid, 19-27 parts of aluminum oxide, 60-70 parts of calcium carbonate and 2-5 parts of silane assistant.
2. The bird damage prevention insulating coating of the alternating current-direct current filter as claimed in claim 1, characterized by comprising the following components in parts by weight: 60 parts of silicon rubber, 20 parts of silicon resin, 15 parts of calcium tartrate, 2 parts of chopped polyester fiber, 6 parts of nano zinc oxide, 16 parts of fulvic acid, 22 parts of aluminum oxide, 65 parts of calcium carbonate and 4 parts of silane assistant.
3. The bird damage prevention insulating coating of the alternating current-direct current filter as claimed in claim 1, wherein the silicone rubber is a mixture of raw methyl vinyl silicone rubber and raw fluorosilicone rubber in a weight ratio of 8: 94.
4. The AC/DC filter insulating coating according to claims 1 to 3, wherein the coating is encapsulated on a capacitor shell, a tubular bus, a grading ring, a C-shaped steel beam, tubular bus hardware and insulator hardware of the filter, and is formed by vulcanizing the coating.
5. A method for preparing the bird damage prevention insulating coating of the AC/DC filter of any one of claims 1 to 3, comprising the steps of:
s1: according to the weight parts, putting silicon rubber, silicon resin and short-cut polyester fiber into an internal mixer, heating to 80-90 ℃, and mixing and stirring for 25-35 min;
s2: adding nano zinc oxide, aluminum oxide, calcium carbonate and a silane auxiliary agent, heating to 140-150 ℃, kneading for 30-50 min at a vacuum degree of-0.05 MPa, and then discharging to obtain a sizing material;
s3: cooling the rubber material to 45-60 ℃, rolling, adding the rubber material into an internal mixer after rolling, adding calcium tartrate, mixing for 3-5 min, and discharging to obtain a dense mixing rubber;
s4: mixing the dense rubber again uniformly by an open mill, adding fulvic acid particles, and rolling into a film by a calender;
s5: and (3) carrying out vulcanization reaction on the rubber coil through a cold feed extruder and a steam vulcanization pipe to obtain the insulating coating.
6. The method of claim 5, wherein in step S1, the silicone rubber, the silicone resin and the chopped polyester fiber are fed into an internal mixer, heated to 85 ℃, mixed and stirred for 30 min.
7. The method for preparing the bird damage prevention insulating coating of the AC/DC filter as claimed in claim 5, wherein in S2, nano zinc oxide, aluminum oxide, calcium carbonate and silane assistant are added, the temperature is raised to 144 ℃, and the kneading time is 40 min.
8. The method for preparing the bird damage prevention insulation coating of the AC/DC filter according to any one of claims 5 to 7, wherein the operation temperature of the open mill in S4 is 100 to 120 ℃ for 10 to 20min, and the vulcanization temperature in S5 is 150 to 180 ℃ and the vulcanization time is 10 to 30 min.
9. A method for implementing the bird damage prevention insulating coating for the AC/DC filter according to any one of claims 1 to 3, comprising the steps of:
s1: planning a power failure period according to a maintenance plan of a converter station/transformer substation, and coordinating and organizing an insulating coating project plan for preventing bird damage of AC and DC filter equipment in a station;
s2: according to the planned workload and the operation time, a project manager is established, a construction operation team is organized, construction mechanical equipment is equipped, and the operation implementation scheme is refined;
s3: the filter field capacitor tower is insulated by using an alternating current-direct current filter bird damage prevention insulation coating, and the method comprises the steps of coating a capacitor shell, a lead tube bus, a grading ring, a metal framework and a brace electrified part.
10. A method for manufacturing an insulating coating for preventing bird damage of an AC/DC filter according to any one of claims 1 to 3, comprising the steps of:
s1, coating cleaning agents on a capacitor shell, a tube bus, a grading ring, a C-shaped steel beam, a tube bus fitting and an insulator fitting of the filter, and cleaning and drying the components;
s2, coating insulating glue paint to form a heat conduction and insulation isolation layer with the thickness of 0.5-1.5 mm on the capacitor shell, the tubular bus, the equalizing ring, the C-shaped steel beam, the tubular bus hardware fitting and the insulator hardware fitting;
s3, attaching insulating glue coating pre-vulcanized parts at sharp positions of the bolts, the steel members and the hardware fittings, wherein the thickness is 0.5-1.5 mm;
s4, the supporting porcelain insulator of the filter, the capacitor sleeve and the cable and the joint are shielded by a film or a sleeve, and are removed after the insulating paint is coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011516667.9A CN112680102B (en) | 2020-12-21 | 2020-12-21 | Bird damage prevention insulating coating and coating for AC/DC filter and preparation method of bird damage prevention insulating coating and coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011516667.9A CN112680102B (en) | 2020-12-21 | 2020-12-21 | Bird damage prevention insulating coating and coating for AC/DC filter and preparation method of bird damage prevention insulating coating and coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112680102A CN112680102A (en) | 2021-04-20 |
| CN112680102B true CN112680102B (en) | 2022-02-15 |
Family
ID=75449758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011516667.9A Active CN112680102B (en) | 2020-12-21 | 2020-12-21 | Bird damage prevention insulating coating and coating for AC/DC filter and preparation method of bird damage prevention insulating coating and coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112680102B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139546A (en) * | 2010-10-28 | 2011-08-03 | 天津大学 | Glass fiber reinforced heat-conducting insulation silicon rubber composite material and preparation method thereof |
| CN105860536A (en) * | 2016-04-13 | 2016-08-17 | 山东兆圭高分子材料科技有限公司 | Flame-retardant and fire-resistant ceramic silicone rubber and preparation method thereof |
| CN106147240A (en) * | 2016-06-24 | 2016-11-23 | 安徽省浩辉电力技术有限公司 | A kind of chilling shrink type cable accessory silicone rubber and preparation method thereof |
| CN106349716A (en) * | 2016-09-14 | 2017-01-25 | 东莞市朗晟硅材料有限公司 | Fluorinated-silicon-rubber mixed compound and preparation method thereof |
| CN106928727A (en) * | 2017-03-29 | 2017-07-07 | 河北硅谷化工有限公司 | A kind of current conversion station filters the preparation method of tower special-purpose multifunctional fluorine silicon insulating cement |
| CN108047724A (en) * | 2017-11-10 | 2018-05-18 | 桂林裕天新材料有限公司 | A kind of silicon rubber gross rubber of high insulation resistance and preparation method thereof |
| CN108587457A (en) * | 2018-05-17 | 2018-09-28 | 河北硅谷化工有限公司 | A kind of substation, the special fluorine silicon electro-insulating rubber coating of current conversion station reactor preparation method |
| CN108610935A (en) * | 2018-05-21 | 2018-10-02 | 安徽朗凯奇防水科技股份有限公司 | A kind of new type monocomponent moist-set polyurethane water-repellent paint and preparation method thereof |
| CN109023335A (en) * | 2018-07-25 | 2018-12-18 | 铂金顿(广东)环境技术有限公司 | A kind of metal material surface conversion film at film liquid and application thereof |
| CN109370368A (en) * | 2018-09-06 | 2019-02-22 | 沈阳化工大学 | A kind of steel structure aqueous preparation method for coating |
| CN109627973A (en) * | 2018-12-26 | 2019-04-16 | 河北硅谷化工有限公司 | A kind of explosion-proof damage coatings of insulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6347355B2 (en) * | 2016-12-21 | 2018-06-27 | 大阪ウイントン株式会社 | Bird repellent paint |
-
2020
- 2020-12-21 CN CN202011516667.9A patent/CN112680102B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139546A (en) * | 2010-10-28 | 2011-08-03 | 天津大学 | Glass fiber reinforced heat-conducting insulation silicon rubber composite material and preparation method thereof |
| CN105860536A (en) * | 2016-04-13 | 2016-08-17 | 山东兆圭高分子材料科技有限公司 | Flame-retardant and fire-resistant ceramic silicone rubber and preparation method thereof |
| CN106147240A (en) * | 2016-06-24 | 2016-11-23 | 安徽省浩辉电力技术有限公司 | A kind of chilling shrink type cable accessory silicone rubber and preparation method thereof |
| CN106349716A (en) * | 2016-09-14 | 2017-01-25 | 东莞市朗晟硅材料有限公司 | Fluorinated-silicon-rubber mixed compound and preparation method thereof |
| CN106928727A (en) * | 2017-03-29 | 2017-07-07 | 河北硅谷化工有限公司 | A kind of current conversion station filters the preparation method of tower special-purpose multifunctional fluorine silicon insulating cement |
| CN108047724A (en) * | 2017-11-10 | 2018-05-18 | 桂林裕天新材料有限公司 | A kind of silicon rubber gross rubber of high insulation resistance and preparation method thereof |
| CN108587457A (en) * | 2018-05-17 | 2018-09-28 | 河北硅谷化工有限公司 | A kind of substation, the special fluorine silicon electro-insulating rubber coating of current conversion station reactor preparation method |
| CN108610935A (en) * | 2018-05-21 | 2018-10-02 | 安徽朗凯奇防水科技股份有限公司 | A kind of new type monocomponent moist-set polyurethane water-repellent paint and preparation method thereof |
| CN109023335A (en) * | 2018-07-25 | 2018-12-18 | 铂金顿(广东)环境技术有限公司 | A kind of metal material surface conversion film at film liquid and application thereof |
| CN109370368A (en) * | 2018-09-06 | 2019-02-22 | 沈阳化工大学 | A kind of steel structure aqueous preparation method for coating |
| CN109627973A (en) * | 2018-12-26 | 2019-04-16 | 河北硅谷化工有限公司 | A kind of explosion-proof damage coatings of insulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112680102A (en) | 2021-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101821817B (en) | Polymer concrete electrical insulation system | |
| CN105733376B (en) | Weather resistant halogen-free flame retardant anti-corrosion insulation fluorocarbon coating | |
| Zhang et al. | Pollution flashover performance of full-scale±800 kV converter station post insulators at high altitude area | |
| Verma et al. | Aging studies on polymeric insulators under DC stress with controlled climatic conditions | |
| CN102721907A (en) | Method for testing power-frequency and impulse superimposed voltage in high-altitude region | |
| CN105754476A (en) | Silicon rubber antifouling hydrophobic coating and preparation method thereof | |
| CN112680102B (en) | Bird damage prevention insulating coating and coating for AC/DC filter and preparation method of bird damage prevention insulating coating and coating | |
| CN103852411B (en) | Pyrocondensation insulating materials operation aging assessment | |
| KR100928661B1 (en) | Manufacturing method of self fusion and flame retardant silicone insulating tape and self fusion and flame retardant silicone insulation tape | |
| CN110669387A (en) | Insulating protective film coating and preparation method thereof | |
| George et al. | Field experience and laboratory investigation of glass insulators having a factory-applied silicone rubber coating | |
| CN111037819B (en) | Preparation method of epoxy insulation composite material with improved static dissipation characteristic | |
| Shenoi et al. | Evaluating station post insulator performance from electric field calculations | |
| Qing et al. | New optimization method on electric field distribution of composite insulator | |
| CN103269027B (en) | The special test stand that is exposed to the sun of power system steel structure | |
| CN110357492B (en) | Inorganic full-pouring material for bus and preparation method and application thereof | |
| Amiri et al. | Effect of defective RTV coatings on insulation performance of porcelain insulators | |
| Wu et al. | External insulation design of converter stations for Xiangjiaba-Shanghai±800 kV UHVDC project | |
| Lü et al. | Study on the protective effect of the defective insulating sheath used for transmission lines | |
| CN205595609U (en) | A insulation system for high tension switchgear is female to be arranged | |
| CN114527359A (en) | Bridge electricity-proof insulating plate | |
| Silinga | Evaluation of the leakage current performance of RTV silicone rubber-coated glass samples, energized under AC, DC+, and DC-in a controlled local laboratory | |
| Zhang et al. | Simulation of Potential Distribution and Leakage Current of 800kV DC Arrester under Different Degrees of Degradation | |
| Pan et al. | Research on Arc Test in Oil Chamber of Vacuum On-load Tap-changer for Converter Transformer | |
| Ye et al. | Method and evaluation of repairing the erosion defect on the LSR shed of the insulation jacket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Song Zhiqiang Inventor after: Song Liqiang Inventor after: Song Juqiang Inventor after: Song Furu Inventor after: Liao Wenfeng Inventor after: Li Fengqi Inventor after: Wei Jingyi Inventor after: Zhang Dongqing Inventor before: Song Zhiqiang Inventor before: Song Liqiang Inventor before: Song Juqiang Inventor before: Song Furu |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210629 Address after: 057151 Dongguan, Guangfu Town, Yongnian District, Handan City, Hebei Province Applicant after: HEBEI SILICON VALLEY CHEMICAL Co.,Ltd. Applicant after: DC technology center of State Grid Corporation of China Address before: 057151 Dongguan, Guangfu Town, Yongnian District, Handan City, Hebei Province Applicant before: HEBEI SILICON VALLEY CHEMICAL Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |