CN111440451A - Long-acting repair liquid for cables and using method thereof - Google Patents
Long-acting repair liquid for cables and using method thereof Download PDFInfo
- Publication number
- CN111440451A CN111440451A CN202010447979.2A CN202010447979A CN111440451A CN 111440451 A CN111440451 A CN 111440451A CN 202010447979 A CN202010447979 A CN 202010447979A CN 111440451 A CN111440451 A CN 111440451A
- Authority
- CN
- China
- Prior art keywords
- long
- cable
- repair liquid
- reinforcing material
- acting
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
-
- 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
- H02G1/16—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for repairing insulation or armouring of cables
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a long-acting repair liquid for a cable and a using method thereof, wherein the long-acting repair liquid for the cable consists of a quick insulation reinforcing material, a medium-long term reinforcing material, a catalyst and an anti-aging blender; the formula of the invention is configured in a short-term and medium-term mode, and the problem that the treatment formula is too fast in flow under the action of injection pressure or the formula rapidly flows out of a cable body due to the environmental effect and other factors to cause that the repair cannot be thorough is considered, and the invention combines a high-frequency voltage application method with bias voltage to generate a barrier containing copper or aluminum, thereby achieving the purposes of improving the insulation strength and preventing water intrusion; the anti-aging blender not only reduces the temperature and improves the flash point temperature, but also has stable chemical performance of a stable treatment formula, and achieves the effects of long-term treatment and improvement of the long-term reliability of cables.
Description
Technical Field
The invention belongs to the field of cable repair, and particularly relates to a long-acting cable repair liquid and a using method thereof.
Background
Cables are indispensable media for power and information transmission in industrial applications, and are widely used in the power industry, the communication industry, the automotive and aviation industries. After the cable runs, various defects can be generated due to the difference of the running environment, the manufacturing process, the construction condition and the maintenance technical level, such as the change of dielectric constant, the reduction of insulation level and the increase of loss caused by water aging, electric heat aging, holes, electric radiation aging, light radiation aging and the like. Therefore, how to repair the defects of the existing cable and prolong the service life of the cable has very important practical significance.
The related technical scheme for the aging treatment of the cable water tree is provided in China, for example, Chinese patent CN102618037A discloses a power cable repair liquid capable of generating nano particles by itself and a preparation method and application thereof, and the preparation method of the repair liquid is characterized by comprising the following steps: adding 70-90 parts of siloxane repairing liquid, 10-20 parts of catalyst and 0-10 parts of additive into a mixing container with a stirrer, and stirring and mixing for 15-30min at room temperature under the protection of inert gas to obtain the power cable repairing liquid capable of generating nano particles. Injecting a repair liquid into a cable core of the cable by adopting an adapter and an air compressor under the pressure of 0.2-0.8 MPa, keeping the pressure for 1.5-3 h, then sealing the adapters at two ends of the cable, generating polysiloxane and inorganic metal oxide nano particles by the repair liquid in the process, and filling and repairing insulation defects of the cable. After 4-80 h, opening adapters at two ends of the cable, and discharging residual reaction liquid; for another example, chinese patent CN107011613A discloses a crosslinked polyethylene cable repair liquid of inorganic nanoparticle composite siloxane, which is prepared by first successfully synthesizing KH-570-TiO2 particles by a sol-gel combined hydrothermal method, introducing ethylene groups on the surface of the nano titanium dioxide particles, and then mixing the nano titanium dioxide particles, nano aluminum oxide, nano silicon dioxide, nano zinc oxide inorganic nanoparticles and an organic solvent to form a nano dispersion liquid; then on the basis of the siloxane repairing liquid, a titanate catalyst with the capability of generating nano metal oxide by hydrolysis is selected and mixed with the nano dispersion liquid to form the cable repairing liquid. Compared with the traditional siloxane repairing technology, the repairing liquid disclosed by the invention is short in time for filling and repairing the cable insulation defects, safe and stable, remarkable in repairing effect, and capable of inhibiting further growth of water trees and defects. However, the current treatment technology has the following problems:
(1) the flash point of the repair liquid is threatened or not, and the flash point is improved: the cable may generate higher temperature under long-term overload conditions, and if the cable still has discharge phenomenon after repair, the flash point of the repair liquid may be too low to cause fire;
(2) short, medium and long term composition problems of repair fluids in the treatment of cable insulation defects: different components in the comprehensive formula of the repair liquid have different permeation efficiencies in the cable, so that part of the repair liquid is converted into a filler after the repair liquid is injected for a certain time, and part of the repair liquid is still remained in the cable body but permeates out of the main insulation of the cable along with the time;
(3) the problems of stability and reliability of the residual repairing liquid under the combined action of light and heat are not considered;
(4) only water branches are considered, and the situation of electric branches is not considered, namely the suppression situation of internal discharge is not fully considered;
(5) the water content between the wire core and the insulating layer of the sheath layer under the discharged condition and the interaction of salt in the water tree and the discharge current are not considered;
(6) in the process of injecting the repair liquid under pressure, the main insulation is not uniformly pressed due to the nonuniform gaps of water branches in the main insulation of the cable, the repair liquid generates different main insulation extrusion in the process of permeating the main insulation, so that the main insulation expands and deforms, and the cable can be damaged directly or other phases of a multi-core (such as three-phase) cable are extruded seriously, so that the cable is damaged;
(7) in the process of injecting the repair liquid into the repaired cable under pressure, the cable body may be in a state of soaking water or relatively high environmental humidity, so that the environmental pressure condition of a local area of the cable is greater than that of air, the position of the soaking water is opposite and not easy to pass through the pressure, and discharge is detected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a long-acting repair liquid for cables;
the second purpose of the invention is to provide a using method of the long-acting repair liquid for the cable.
The purpose of the invention is realized by the following technical scheme: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 4-15; medium-long term reinforcing material: 70-95;
catalyst: 0.01 to 5; anti-aging blender: 0.01 to 5;
wherein, the rapid insulation reinforcing material is one or the combination of phenyl trimethoxy silane, phenyl methyl ketone, silane coupling agent and dimethyl silicone oil;
the medium-long term reinforcing material is one or the combination of more of phenyl dimethyl methoxy silane, phenyl methyl dimethoxy silane, 3-cyano butyl methyl dimethoxy silane, (N-butyl-aminopropyl) methyl dimethoxy silane, phenyl dimethyl methoxy silane, (P-methyl phenyl ethyl) methyl dimethoxy silane, silane modified resin and methyl tertiary butyl dimethoxy silane;
the anti-aging blender is one or a combination of more of bis (1-octyloxy-2, 2,6, 6-tetramethyl-4-piperidyl) sebacate, ferrocene, oxalyl ferrocene, carboxyferrocene, 1,3, 5-tris (4-tert-butyl-3-hydroxy-2, 6-dimethylbenzyl) -1,3, 5-triazine-2, 4,6- (1H,3H,5H) -trione, benzotriazole ultraviolet light absorber, geranylacetone and polyvinylidene fluoride.
Further, the feed comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 8-12; medium-long term reinforcing material: 75-80 parts;
catalyst: 0.5 to 3; anti-aging blender: 1 to 3.
As a preferred scheme, the fertilizer comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 12; medium-long term reinforcing material: 80;
catalyst: 2; anti-aging blender: 0.5.
Further, the catalyst is a combination of two or more of titanate coupling agent, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, isopropyl dioctyl phosphate acyloxy titanate, β -diketone titanium, β -diketone titanium polyacid compound, 1, 3-cyclohexanedione, cyclopentadienyl titanium catalyst, β -diketone non-cyclopentadienyl titanium catalyst, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy titanate), tetraisopropyl titanate, dodecylbenzene sulfonic acid, benzene sulfonic acid disodium salt and silicon alkoxide.
A method for using a long-acting repair liquid for a cable comprises the steps of heating the long-acting repair liquid to 45-60 ℃ at normal temperature or injecting the long-acting repair liquid into a main insulating or sheathing layer of the cable in a mode of not less than atmospheric pressure; or heating the cable core or the main insulation to 45-60 ℃ and injecting the cable core or the main insulation into the cable main insulation or the sheath layer in a mode of not less than atmospheric pressure; and before or 25-35 min after the repair liquid is injected, applying a high-frequency signal with bias voltage between the cable core and the ground wire, or between the cable core and the cable core, or between the cable core and the sheath shielding layer. By utilizing the bias voltage at the position of insulation damage or insulation defect, a copper-containing or aluminum-containing barrier (cuprous chloride or aluminum oxide) is generated through the bias current, the bias electric field and an anti-aging blender or the moisture-containing salt component outside, so that the leakage current is reduced, and the insulation is improved.
Furthermore, the frequency of the high-frequency signal with bias voltage is 100Hz-2000MHz, the voltage amplitude is 0.1V-10000V, and the proportion of direct current bias is plus or minus 1% -90%.
Furthermore, a hysteresis expansion sensor or a piezoelectric vibration transducer is added on a cable sheath layer or a main insulating outer layer of the cable in the long-acting repair liquid injection process, and the purpose of uniform formula permeation is achieved by generating vibration ultrasonic waves in the pressure injection process or generating vibration ultrasonic waves by high-frequency signal triggering.
The invention considers the problem of rapid temperature rise caused by light radiation in the discharge process, and provides a formula which takes light stabilizer and ultraviolet absorbent as blender to improve the flash point temperature of the repair liquid;
the ultraviolet light absorber or the light stabilizer absorbs discharge charges with ultraviolet wavelength, so that rapid temperature rise is inhibited, and ultraviolet radiation aging is reduced to solve the problems of stability and reliability of residual repair liquid under the combined action of light and heat under the condition of internal discharge;
in order to prevent the situation that the sheath part is possibly not repaired in place due to different flow rates and permeation of repair liquid, the invention combines the application of an alternating current signal of bias voltage on the cable, so that filling barrier materials are formed between the main insulation and the gap of the wire core;
according to the invention, by combining a mechanical vibration mode, a single chemical method and a mechanical vibration method are combined, so that in the cable compression process, an internal gap is in a stable state, the internal pressure solvent is better released under pressure, and the deformation risk is reduced;
the invention applies biased electrical signals to the cable through an electrical method to achieve that moisture and repair (or repair liquid) in a gap between metal and a water seepage part generate chemical reaction to generate a filler containing copper or aluminum, effectively prevents the moisture at a water soaking position from continuously invading, ensures the normal circulation of the repair liquid, and generates insulating and reinforcing condensate materials through the reaction with limited water seepage quantity.
The rapid insulation reinforcing material of the invention improves the dielectric constant, but the ignition point of the component is lower than 100 ℃, so that other heat absorption and anti-aging regulators such as light stabilizer, ultraviolet absorbent and the like are necessary to be provided for the component, the purpose of reducing the temperature rise is achieved, and meanwhile, the rapid insulation reinforcing material is added, so that the comprehensive ignition point can be improved to be more than 120 ℃. Even if the rapid reinforcing material only selects one of phenyl trimethoxy silane, the flash point temperature can be increased by more than 10 ℃ by utilizing the effect of an anti-aging regulator such as benzotriazole ultraviolet light absorber or ferrocene for absorbing radiation. The method for generating the barrier chemical materials by the high-frequency bias voltage can also reduce the temperature rise, and achieve the effects of protecting the stability of a treatment formula and reducing the temperature rise. The invention combines the defects of a chemical method, mechanical vibration and an electrochemical method and an aging treatment technology, and can carry out repair treatment by the electrochemical method even in the early stage of water inflow of bubble water spots which do not generate material aging.
The invention has the following advantages: the formula of the invention is configured in a short-term and medium-term mode, and the problem that the treatment formula is too fast in flow under the action of injection pressure or the formula rapidly flows out of a cable body due to the environmental effect and other factors to cause that the repair cannot be thorough is considered, and the invention combines a high-frequency voltage application method with bias voltage to generate a barrier containing copper or aluminum, thereby achieving the purposes of improving the insulation strength and preventing water intrusion; the anti-aging blender not only reduces the temperature and improves the flash point temperature, but also has stable chemical performance of a stable treatment formula, and achieves the effects of long-term treatment and improvement of the long-term reliability of cables.
Detailed Description
The invention is further described below with reference to examples, without limiting the scope of the invention to the following:
example 1: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 4; medium-long term reinforcing material: 70;
catalyst: 0.01; anti-aging blender: 0.01;
wherein, the rapid insulation reinforcing material is phenyl trimethoxy silane;
the medium-long term reinforcing material is phenyl dimethyl methoxy silane;
the anti-aging blender is bis (1-octyloxy-2, 2,6, 6-tetramethyl-4-piperidyl) sebacate.
The catalyst is a combination of a titanate coupling agent and isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate.
Example 2: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 15; medium-long term reinforcing material: 95;
catalyst: 5; anti-aging blender: 5;
wherein, the rapid insulation reinforcing material is a combination of phenyl methyl ketone and a silane coupling agent;
the medium-long term reinforcing material is a combination of phenyl methyl dimethoxy silane and 3-cyano butyl methyl dimethoxy silane;
the anti-aging blender is a combination of ferrocene and oxalyl ferrocene;
the catalyst is a combination of isopropyl dioctyl phosphate acyloxy titanate, isopropyl dioleate oxy (dioctyl phosphate acyloxy titanate) and tetraisopropyl titanate.
Example 3: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 6; medium-long term reinforcing material: 75;
catalyst: 4; anti-aging blender: 0.04;
wherein, the rapid insulation reinforcing material is the combination of phenyl methyl ketone, silane coupling agent and dimethyl silicone oil;
the medium-long term reinforcing material is a combination of (N-butyl-aminopropyl) methyldimethoxysilane, phenyl dimethylmethoxysilane and (P-methylphenylethyl) methyldimethoxysilane;
the anti-aging blender is a combination of carboxyferrocene, 1,3, 5-tri (4-tert-butyl-3-hydroxy-2, 6-dimethylbenzyl) -1,3, 5-triazine-2, 4,6- (1H,3H,5H) -trione and benzotriazole ultraviolet light absorbers;
the catalyst is the combination of isopropyl dioleate oxyl (dioctyl phosphate acyloxy titanate), tetraisopropyl titanate, dodecyl benzene sulfonic acid and benzene sulfonic acid disodium salt.
Example 4: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 8; medium-long term reinforcing material: 90, respectively;
catalyst: 1; anti-aging blender: 4;
wherein, the rapid insulation reinforcing material is the combination of phenyl trimethoxy silane, phenyl methyl ketone, silane coupling agent and dimethyl silicone oil;
the medium-long term reinforcing material is a combination of phenyl dimethyl methoxy silane, (P-methyl phenyl ethyl) methyl dimethoxy silane, silane modified resin and methyl tert-butyl dimethoxy silane;
the anti-aging blender is a combination of carboxyferrocene, 1,3, 5-tri (4-tert-butyl-3-hydroxy-2, 6-dimethylbenzyl) -1,3, 5-triazine-2, 4,6- (1H,3H,5H) -trione, benzotriazole ultraviolet light absorbers and geranylacetone.
The catalyst is a combination of isopropyl dioleate oxyl (dioctyl phosphate acyloxy titanate), tetraisopropyl titanate, β -titanium diketone, β -titanium diketone polyacid compound, 1, 3-cyclohexanedione, cyclopentadienyl titanium catalyst, dodecyl benzene sulfonic acid, disodium benzene sulfonate and silicon alkoxide.
Example 5: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 8; medium-long term reinforcing material: 75;
catalyst: 0.5; anti-aging blender: 1.
Wherein, the rapid insulation reinforcing material is a combination of a silane coupling agent and dimethyl silicone oil;
the medium-long term reinforcing material is the combination of phenyl methyl dimethoxy silane, 3-cyano butyl methyl dimethoxy silane, phenyl dimethyl methoxy silane, (P-methyl phenyl ethyl) methyl dimethoxy silane and methyl tertiary butyl dimethoxy silane;
the anti-aging blender is a combination of ferrocene, carboxyferrocene, benzotriazole ultraviolet light absorbers, geranylacetone and polyvinylidene fluoride;
the catalyst is a combination of β -titanium diketone, β -titanium diketone polyacid compound, titanate coupling agent, isopropyl dioctyl phosphate acyloxy titanate, isopropyl dioleate oxy (dioctyl phosphate acyloxy titanate), tetraisopropyl titanate, dodecyl benzene sulfonic acid and benzene sulfonic acid disodium salt.
Example 6: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 12; medium-long term reinforcing material: 80;
catalyst: 3; anti-aging blender: 3.
Wherein, the rapid insulation reinforcing material is a silane coupling agent;
the medium-long term reinforcing material is one or more of phenyl methyl dimethoxy silane, 3-cyano butyl methyl dimethoxy silane, (N-butyl-aminopropyl) methyl dimethoxy silane, phenyl dimethyl methoxy silane, (P-methyl phenyl ethyl) methyl dimethoxy silane and methyl tertiary butyl dimethoxy silane;
the anti-aging blender is a combination of bis (1-octyloxy-2, 2,6, 6-tetramethyl-4-piperidyl) sebacate, oxalyl ferrocene, carboxyferrocene, 1,3, 5-tris (4-tert-butyl-3-hydroxy-2, 6-dimethylbenzyl) -1,3, 5-triazine-2, 4,6- (1H,3H,5H) -trione, a benzotriazole ultraviolet light absorber and geranyl acetone;
the catalyst is a combination of 1, 3-cyclohexanedione, a titanocene catalyst, β -diketone non-titanocene catalyst, a titanate coupling agent, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, dodecyl benzene sulfonic acid, disodium benzene sulfonate and silicon alkoxide.
Example 7: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 10; medium-long term reinforcing material: 78, a nitrogen source;
catalyst: 2; anti-aging blender: 1.5.
Wherein, the rapid insulation reinforcing material is the combination of phenyl trimethoxy silane, phenyl methyl ketone and silane coupling agent;
the medium-long term reinforcing material is a combination of phenyl dimethyl methoxy silane, phenyl methyl dimethoxy silane, 3-cyano butyl methyl dimethoxy silane, (N-butyl-aminopropyl) methyl dimethoxy silane, phenyl dimethyl methoxy silane, (P-methyl phenyl ethyl) methyl dimethoxy silane and silane modified resin;
the anti-aging blender is a combination of bis (1-octyloxy-2, 2,6, 6-tetramethyl-4-piperidyl) sebacate, ferrocene, oxalyl ferrocene, carboxyferrocene, 1,3, 5-tris (4-tert-butyl-3-hydroxy-2, 6-dimethylbenzyl) -1,3, 5-triazine-2, 4,6- (1H,3H,5H) -trione, a benzotriazole ultraviolet light absorber and geranyl acetone;
the catalyst is a combination of a titanate coupling agent, isopropyldioleacyloxy (dioctylphosphonoxy) titanate, isopropyldioctylphosphonoxy titanate, β -titanium diketonate, 1, 3-cyclohexanedione, a titanocene catalyst, isopropyldioleacyloxy (dioctylphosphonoxy titanate), tetraisopropyl titanate, dodecylbenzenesulfonic acid and benzenesulfonic acid disodium salt.
Example 8: a long-acting repair liquid for cables comprises the following raw materials in parts by weight:
quick insulating reinforcing material: 12; medium-long term reinforcing material: 80;
catalyst: 2; anti-aging blender: 0.5;
wherein, the rapid insulation reinforcing material is the combination of phenyl trimethoxy silane, phenyl methyl ketone, silane coupling agent and dimethyl silicone oil;
the medium-long term reinforcing material is a combination of phenyl dimethyl methoxy silane, phenyl methyl dimethoxy silane, 3-cyano butyl methyl dimethoxy silane, (N-butyl-aminopropyl) methyl dimethoxy silane, phenyl dimethyl methoxy silane, (P-methyl phenyl ethyl) methyl dimethoxy silane, silane modified resin and methyl tertiary butyl dimethoxy silane;
the anti-aging blender is a combination of bis (1-octyloxy-2, 2,6, 6-tetramethyl-4-piperidyl) sebacate, ferrocene, oxalyl ferrocene, carboxyferrocene, 1,3, 5-tris (4-tert-butyl-3-hydroxy-2, 6-dimethylbenzyl) -1,3, 5-triazine-2, 4,6- (1H,3H,5H) -trione, benzotriazole ultraviolet light absorber, geranyl acetone and polyvinylidene fluoride;
the catalyst is a combination of a titanate coupling agent, isopropyldioleacyloxy (dioctylphosphonoxy) titanate, β -diketotitanium polyacid compound, 1, 3-cyclohexanedione, β -diketonon-titanocene catalyst, isopropyldioctylphosphonoxy titanate, isopropyldioleayloxy (dioctylphosphonoxy titanate), tetraisopropyl titanate, dodecylbenzenesulfonic acid, disodium benzenesulfonate and silanolate.
Example 9: a method for using a long-acting repair liquid for a cable comprises the steps of injecting the long-acting repair liquid in example 1 into main insulation of the cable at normal temperature in a mode of not less than atmospheric pressure; and applying a high-frequency signal with bias voltage between the cable core and the ground wire 25min before the repair liquid is injected.
Wherein, the frequency of the high-frequency signal with bias voltage is 100Hz-2000MHz, the voltage amplitude is 0.1V-10000V, and the proportion of direct current bias is plus or minus 1% -90%.
And a piezoelectric vibration transducer is added on the cable sheath layer in the long-acting repair liquid injection process.
Example 10: a method for using the long-acting repair liquid for the cable comprises the steps of heating the long-acting repair liquid in the embodiment 3 to 45 ℃, and injecting the long-acting repair liquid into a cable sheath layer in a mode of not less than atmospheric pressure; and applying a high-frequency signal with bias voltage between the wire core and the core line 35min after the repair liquid is injected.
Wherein, the frequency of the high-frequency signal with bias voltage is 100Hz-2000MHz, the voltage amplitude is 0.1V-10000V, and the proportion of direct current bias is plus or minus 1% -90%.
And a hysteresis expansion sensor is added on the outer layer of the main insulation of the cable in the process of injecting the long-acting repair liquid.
Example 11: a method for using the long-acting repair liquid for the cable comprises the steps of heating the long-acting repair liquid in example 5 to 50 ℃, and injecting the long-acting repair liquid into the main insulation of the cable in a mode of not less than atmospheric pressure; and applying a high-frequency signal with bias voltage between the wire core and the sheath shielding layer 30min before the repair liquid is injected.
Wherein, the frequency of the high-frequency signal with bias voltage is 100Hz-2000MHz, the voltage amplitude is 0.1V-10000V, and the proportion of direct current bias is plus or minus 1% -90%.
And a piezoelectric vibration transducer is added on the cable sheath layer in the long-acting repair liquid injection process.
Example 12: a method for using the long-acting repair liquid for the cable is characterized in that a cable core is heated to 60 ℃, and the long-acting repair liquid in example 7 is injected into the main insulation of the cable in a mode of not less than atmospheric pressure; and applying a high-frequency signal with bias voltage between the cable core and the ground wire 32min after the repair liquid is injected.
Wherein, the frequency of the high-frequency signal with bias voltage is 100Hz-2000MHz, the voltage amplitude is 0.1V-10000V, and the proportion of direct current bias is plus or minus 1% -90%.
And a hysteresis expansion sensor is added on the cable sheath layer in the long-acting repair liquid injection process.
Example 13: a method for using a long-acting repair liquid for a cable comprises the steps of heating a main insulating layer of the cable to 50 ℃, and injecting the long-acting repair liquid of embodiment 8 into a sheath layer of the cable in a mode of not less than atmospheric pressure; and applying a high-frequency signal with bias voltage between the cable core and the sheath shielding layer 35min after the repair liquid is injected.
Wherein, the frequency of the high-frequency signal with bias voltage is 100Hz-2000MHz, the voltage amplitude is 0.1V-10000V, and the proportion of direct current bias is plus or minus 1% -90%.
And a hysteresis expansion sensor is added on the outer layer of the main insulation of the cable in the process of injecting the long-acting repair liquid.
The following experiments illustrate the beneficial effects of the present invention:
experimental example 1:
the rapid insulating reinforcing material is formed by mixing 50% of phenyl methyl ketone (acetophenone) and 50% of phenyl trimethoxy silane, the rapid insulating reinforcing material is formed by mixing 50% of phenyl dimethyl methoxy silane and 50% of (P-methyl phenyl ethyl) methyl dimethoxy silane, the catalyst is formed by combining 50% of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate and titanate coupling agent, and the anti-aging blending agent is formed by 10% of ferrocene, 40% of 1,3, 5-tri (4-tert-butyl-3-hydroxy-2, 6-dimethyl benzyl) -1,3, 5-triazine-2, 4,6- (1H,3H,5H) -trione, 40% of geranyl acetone and 10% of polyvinylidene fluoride (PVDF).
In the formula, the volume proportion of the rapid insulation reinforcing material in the total formula is 8%, the volume proportion of the medium-long term insulation reinforcing material in the total formula is 85%, the total proportion of the catalyst is 5%, and the total proportion of the anti-aging blender is 2%.
The formula is stirred in a sealed isolation environment and heated to 50 ℃, 10kV X L PE cable (original insulation value is 800M) with the length of 50 meters is injected, and after the injection is finished, the insulation resistance value is 20G ohm, so the insulation treatment can pass the insulation resistance comparison inspection.
Experimental example 2:
the same points as in experimental example 1 were not repeated, and assuming that the insulation resistance increased from the original 500M to 5G after the injection of the repair liquid, the copper core cable was applied with a voltage of 200kHz, 600V peak, bias voltage ratio of-10% (i.e., -60V) for a duration of 10 minutes, then the cable was applied with a voltage of 300kHz, 400V peak, bias voltage ratio of-10% (-40V) for a duration of 10 minutes, and then the application of the high frequency voltage was stopped, the insulation resistance was tested to increase from 5G to 30G ohm, and the formation of a barrier to cuprous chloride in the main insulation cracks was observed by the sample. It is apparent that in the case of aluminium-cored cables, an aluminium oxide barrier can be formed, which is not described here. Similarly, when the cable is on the sea floor or under-ground channel containing water, the cable can be influenced by sea water or salt containing water in the under-ground channel, if the insulating layer has weak gaps, and the same effect can be achieved by applying a high-frequency signal of a bias voltage.
Experimental example 3:
the same parts as those of the experimental examples 1 and 2 are not repeated, 3000pC (Pikukukukuchi) of the partial discharge capacity of the original cable in the running state is set, the treatment formula shown in the experimental example 1 is injected into the cable after the power of the cable is cut off, the cable is electrified and runs after being placed for 1 hour after the injection is finished, and the partial discharge capacity is reduced to 600pC through the measurement of partial discharge equipment.
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 can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention.
Claims (7)
1. The long-acting repair liquid for the cable is characterized by comprising the following raw materials in parts by weight:
quick insulating reinforcing material: 4-15; medium-long term reinforcing material: 70-95;
catalyst: 0.01 to 5; anti-aging blender: 0.01 to 5;
wherein, the rapid insulation reinforcing material is one or the combination of phenyl trimethoxy silane, phenyl methyl ketone, silane coupling agent and dimethyl silicone oil;
the medium-long term reinforcing material is one or the combination of more of phenyl dimethyl methoxy silane, phenyl methyl dimethoxy silane, 3-cyano butyl methyl dimethoxy silane, (N-butyl-aminopropyl) methyl dimethoxy silane, phenyl dimethyl methoxy silane, (P-methyl phenyl ethyl) methyl dimethoxy silane, silane modified resin and methyl tertiary butyl dimethoxy silane;
the anti-aging blender is one or a combination of more of bis (1-octyloxy-2, 2,6, 6-tetramethyl-4-piperidyl) sebacate, ferrocene, oxalyl ferrocene, carboxyferrocene, 1,3, 5-tris (4-tert-butyl-3-hydroxy-2, 6-dimethylbenzyl) -1,3, 5-triazine-2, 4,6- (1H,3H,5H) -trione, benzotriazole ultraviolet light absorber, geranylacetone and polyvinylidene fluoride.
2. The long-acting cable repair liquid according to claim 1, comprising the following raw materials in parts by weight:
quick insulating reinforcing material: 8-12; medium-long term reinforcing material: 75-80 parts;
catalyst: 0.5 to 3; anti-aging blender: 1 to 3.
3. The long-acting cable repair liquid according to claim 1, comprising the following raw materials in parts by weight:
quick insulating reinforcing material: 12; medium-long term reinforcing material: 80;
catalyst: 2; anti-aging blender: 0.5.
4. The long-acting repair liquid for cables as claimed in claim 1, 2 or 3, wherein the catalyst is a combination of two or more selected from titanate coupling agent, isopropyldioleacyloxy (dioctylphosphonoxy) titanate, β -titanium diketonate, β -titanium diketonate polyacid compound, 1, 3-cyclohexanedione, titanocene catalyst, β -non-titanocene catalyst, isopropyldioctylphosphonoxy titanate, isopropyldioleayloxy (dioctylphosphonoxy titanate), tetraisopropyl titanate, dodecylbenzene sulfonic acid, disodium benzene sulfonate, and silicon alkoxide.
5. The use method of the long-acting repair liquid for the cable according to claim 1, 2 or 3, wherein the long-acting repair liquid is injected into a main insulating or sheathing layer of the cable at normal temperature or by heating the long-acting repair liquid to 45-60 ℃ through a mode of not less than atmospheric pressure; or heating the cable core or the main insulation to 45-60 ℃ and injecting the cable core or the main insulation into the cable main insulation or the sheath layer in a mode of not less than atmospheric pressure; and before or 25-35 min after the repair liquid is injected, applying a high-frequency signal with bias voltage between the cable core and the ground wire, or between the cable core and the cable core, or between the cable core and the sheath shielding layer.
6. The use method of the long-acting cable repair liquid according to claim 5, wherein the frequency of the high-frequency signal with bias voltage is 100Hz-2000MHz, the voltage amplitude is 0.1V-10000V, and the proportion of DC bias is plus or minus 1% -90%.
7. The use method of the long-acting repair liquid for cables as claimed in claim 5, further comprising adding a hysteresis expansion sensor or a piezoelectric vibration transducer to the cable sheath layer or the main insulating outer layer of the cable during the injection of the long-acting repair liquid, wherein the purpose of uniform formulation permeation is achieved by generating vibration ultrasonic waves during the pressure injection process or generating vibration ultrasonic waves by triggering of high frequency signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447979.2A CN111440451A (en) | 2020-05-25 | 2020-05-25 | Long-acting repair liquid for cables and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447979.2A CN111440451A (en) | 2020-05-25 | 2020-05-25 | Long-acting repair liquid for cables and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111440451A true CN111440451A (en) | 2020-07-24 |
Family
ID=71657051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010447979.2A Pending CN111440451A (en) | 2020-05-25 | 2020-05-25 | Long-acting repair liquid for cables and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111440451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512196A (en) * | 2021-07-19 | 2021-10-19 | 中交上海三航科学研究院有限公司 | Alcohol solution of alkyl silanol and preparation method |
| CN114958013A (en) * | 2022-06-22 | 2022-08-30 | 成都高斯电子技术有限公司 | Repair liquid suitable for oil-filled cable and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050192708A1 (en) * | 2004-03-01 | 2005-09-01 | Novinium, Inc. | Method for selecting formulations to treat electrical cables |
| CN103001155A (en) * | 2013-01-04 | 2013-03-27 | 西南交通大学 | Method for intelligently repairing insulating water tree of crosslinked polyethylene power cable |
-
2020
- 2020-05-25 CN CN202010447979.2A patent/CN111440451A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050192708A1 (en) * | 2004-03-01 | 2005-09-01 | Novinium, Inc. | Method for selecting formulations to treat electrical cables |
| CN103001155A (en) * | 2013-01-04 | 2013-03-27 | 西南交通大学 | Method for intelligently repairing insulating water tree of crosslinked polyethylene power cable |
Non-Patent Citations (1)
| Title |
|---|
| 陈讴等: ""电场对水树老化XLPE 电缆修复效果的影响"", 《工程塑料应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512196A (en) * | 2021-07-19 | 2021-10-19 | 中交上海三航科学研究院有限公司 | Alcohol solution of alkyl silanol and preparation method |
| CN114958013A (en) * | 2022-06-22 | 2022-08-30 | 成都高斯电子技术有限公司 | Repair liquid suitable for oil-filled cable and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111440451A (en) | Long-acting repair liquid for cables and using method thereof | |
| CN113930203B (en) | Adhesive with high barrier property, preparation method and application thereof in composite insulator | |
| TW201439173A (en) | Insulating composition, insulating article, preparation method and electrical cable accessory thereof | |
| CN113214781A (en) | Flame-retardant waterproof fireproof insulating sealant and preparation method thereof | |
| CN111154171A (en) | Aging-resistant and cracking-resistant sheath material for mineral insulated cable and preparation method thereof | |
| CN111334186A (en) | Room-temperature self-curing insulation coated silica gel and preparation method thereof | |
| CN110819113A (en) | Bare conductor heat-conducting insulating coating material and preparation method thereof | |
| CN106589426B (en) | Cross-linking radiation cable and preparation method thereof | |
| CN111171515A (en) | Resin-based composite material bus duct pouring process | |
| CN110791003A (en) | Crosslinked polyethylene cable insulating material and preparation method thereof | |
| CN111019516A (en) | Light self-curing electric power insulation coating material, preparation method and power line | |
| KR20090028751A (en) | A self-fusing insulation silicon tape and therefor method | |
| CN105255017A (en) | Ethylene-propylene rubber insulating material for medium voltage power cable and preparation method thereof | |
| CN113024873A (en) | Power cable insulation aging repair liquid with electrical tree resistance and preparation method and application thereof | |
| CN116102973B (en) | Aging-resistant insulating coating material and preparation method thereof | |
| CN111040622A (en) | Super-voltage-resistant flame-retardant heat-conducting organic silicon insulating coating and preparation method thereof | |
| CN111087708A (en) | Halogen-free flame-retardant anti-aging cable material for new energy automobile and preparation method | |
| CN115521547A (en) | Insulating rubber cable material and preparation process thereof | |
| CN111040724B (en) | Adhesive for crosslinked polyethylene and silicone rubber, preparation method and use method | |
| KR100874596B1 (en) | Fabricating method for hffr(halogen free flame retardent) cable and compounds of the same | |
| CN111048242A (en) | Connection sealing structure of electric transmission line and application | |
| CN107337982A (en) | A kind of nanometer power cable repairs liquid | |
| CN109438807B (en) | Insulating material and preparation method and application thereof | |
| CN106356126A (en) | Flame-retarding cross-linked polyethylene power cable capable of being produced in large scale | |
| CN110459361B (en) | Repair material for preventing cable water tree from aging and preparation method and application thereof |
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 |