CN106381750A - Production method of high-breakdown-strength insulation paperboard based on nano modification and paperboard cylinder thereof - Google Patents
Production method of high-breakdown-strength insulation paperboard based on nano modification and paperboard cylinder thereof Download PDFInfo
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- CN106381750A CN106381750A CN201610997352.8A CN201610997352A CN106381750A CN 106381750 A CN106381750 A CN 106381750A CN 201610997352 A CN201610997352 A CN 201610997352A CN 106381750 A CN106381750 A CN 106381750A
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
- D21H11/04—Kraft or sulfate pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/007—Modification of pulp properties by mechanical or physical means
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F13/00—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production
- D21F13/10—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production using board presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a production method of a high-breakdown-strength insulation paperboard based on nano modification and a paperboard cylinder thereof and belongs to the technical field of production of insulation paperboards. The production method of the high-breakdown-strength insulation paperboard comprises the following steps: fluffing and treating liquid paper pulp by using a standard fluffer, simultaneously carrying out ultrasonic dispersion treatment on a nano modifier solvent in an ultrasonic washing machine, mixing the treated liquid paper pulp with the nano modifier solvent, then stirring by using a power-enhancing electric stirrer, forming the liquid paper pulp mixed with the modifier by using a paper sample former, conveying the paper samples to a press vulcanizer for pressing wet paper sheets, then vacuum drying the paper sheets by using the paper sample former to obtain a paperboard. The high-breakdown-strength insulation paperboard produced by the method is applied to a converter transformer outgoing line device insulation system; a pressure-balanced sphere in the structure of the outgoing line device is externally coated with a spherical paperboard cylinder molded by a plurality of layers of modified paper pulp; a guide rod part is externally coated with a cylindrical paperboard cylinder molded by the plurality of layers of modified paper pulp; the high-breakdown-strength insulation paperboard is of great significance to increase of safe operation rate of large converter transformers and reduction of fault rate.
Description
Technical field：
The invention belongs to insulating board preparing technical field is and in particular to a kind of high breakdown strength based on nano modification is exhausted
Edge paperboard making process and its fiber core.
Background technology：
Converter power transformer is the key of DC transmission system, core component, and it carries DC transmission system transformation of electrical energy
Vital task, the safe operation of whole power system determines by its reliability.Outgoing line device is as converter power transformer and the change of current
Crucial coupling part between valve, is easiest to produce electric field concentration phenomenon.Converter power transformer outlet is identical with valve side winding, removes
Bear thunder and lightning, switching overvoltage outer it is necessary to bear the effect of alternating current and direct current, alternating current-direct current superposition and polarity inversion voltage, fortune
The complexity of row condition is an acid test for converter power transformer outgoing line device oil-paper combination insulation system.
Insulating board cylinder, as the internal topmost solid insulating material of converter power transformer outgoing line device insulation system, improves
Breakdown strength under its direct current and AC conditions insulate quite important for outgoing line device internal system.And insulating board is relative
Dielectric constant is higher than the relative dielectric constant of transformer oil, and is affected seriously by factors such as temperature, moisture content, and alternating voltage is made
Bear higher field intensity with lower transformer oil it may appear that the high concentration of electric field and be distributed very uneven, only from converter power transformer
In the structure of outgoing line device, adjustment can not effectively solve the above problems.
Content of the invention：
Present invention aims to improving insulation in above-mentioned converter power transformer outgoing line device oil-paper combination insulation system
The importance that breakdown strength under fiber core direct current and AC conditions insulate for outgoing line device internal system；And insulating board
Relative dielectric constant be higher than transformer oil relative dielectric constant, the lower transformer oil of alternating voltage effect bears higher field
Strong it may appear that the high concentration of electric field and be distributed highly non-uniform problem, there is provided a kind of punctured by force based on the height of nano modification
Degree, low dielectric constant insulation paperboard making process and fiber core.
A kind of strength dielectric paperboard making process is punctured based on the height of nano modification, concretely comprise the following steps：Discongest device with standard
Discongest process liquid paper pulp, ultrasonic disperse is processed in ultrasonic washing unit by nano modifier solvent simultaneously, by processed
With the stirring of reinforcement electric blender after liquid paper pulp and the mixing of nano modifier solvent, reuse pattern and copy and take device to mixed and modified
The liquid paper pulp of agent carries out copying taking molding, delivers to vulcanizing press and is copied after the squeezing of l Water Paper page with pattern and take device that it is vacuum dried
It is processed into cardboard.
Described nano modifier solvent ultrasonic disperse in ultrasonic washing unit adds functional group modification agent, finally when processing
Nano modification insulating board through surface modification is obtained.
Described nano material is nano aluminium oxide or montmorillonite.Nano aluminium oxide is imitated due to quantum size effect, surface
Should, the effect of small-size effect and macro quanta tunnel effect and there is good electricity, magnetics, calorifics, optics and chemistry side
The property in face, application prospect is boundless.Montmorillonite is a kind of laminar silicic acid salt additives, has bigger serface, high surface
The features such as activity and high intensity, it is widely used in and in macromolecule polymeric material, shows excellent electric property, be deeply subject to material
Scientific circles favor.
As a further improvement on the present invention, the particle diameter of described nano aluminium oxide is 10～100nm, the particle diameter of montmorillonite
For 200～400 mesh.
As a further improvement on the present invention, the quality that described nano aluminium oxide adds be insulating board quality 2.3～
2.7%, the quality that montmorillonite adds is the 0.8～1.2% of insulating board quality.
As a further improvement on the present invention, insulating board cylinder punctures strength dielectric cardboard using based on the height of nano modification
The insulating board that preparation method is obtained is made, and insulating board cylinder is spherical fiber core, by converter power transformer outgoing line device structure
Voltage equalizing ball portion be placed in spherical fiber core.
As a further improvement on the present invention, insulating board cylinder punctures strength dielectric cardboard using based on the height of nano modification
The insulating board that preparation method is obtained is made, and insulating board cylinder is cylindrical fiber core, by converter power transformer outgoing line device structure
In guide rod portion be placed in cylindrical fiber core.
The invention has the beneficial effects as follows：
A kind of being punctured in strength dielectric fiber core based on the height of nano modification of the present invention is employed through surface modification
Nano aluminium oxide or montmorillonite, by improving direct current, AC breakdown strength and relative Jie reducing insulating board of insulating board
Electric constant, to improve electric pressure and the insulating properties of converter power transformer outgoing line device composite insulation system, extends its safe handling
In the life-span, this invention is easily realized.The present invention be applied to converter power transformer outgoing line device insulation system, by outgoing line device structure
It is covered with the spherical fiber core being molded into by multilamellar modified pulp outside voltage equalizing ball portion, be covered with outside guide rod portion and be molded by multilamellar modified pulp
The cylindrical fiber core becoming, the dielectric level of outgoing line device insulation system will greatly improve, for raising large-sized converter transformation
The safe operation rate of device and reduction fault rate are all significant.
Brief description：
Fig. 1 is the structural representation of spherical fiber core；
Fig. 2 is the structural representation of cylindrical fiber core；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is the top view of Fig. 2；
Fig. 5 is immersion oil modification insulating board with respect to immersion oil blank cardboard direct current, power frequency disruptive field intensity and relative dielectric
The ratio bar graphs that constant increases or decreases；
In Fig. 5：The nanometer alumina modified insulating board of c-, the imvite modified insulating board of d-, X- dc breakdown field intensity increase
Plus ratio, Y- power frequency disruptive field intensity increase ratio, Z- relative dielectric constant reduces ratio.
Specific embodiment：
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail：
The preparation process of described nano modification insulating board is as follows：Electrician's level is not floated needle timber sulfate pulp lead to
Deliver to paste mill grinding after crossing pulper size degradation, discongest device with standard and discongest the liquid paper pulp after process defibrination so as to concentration is dense
It is reduced to 4.3%～4.8% concentration paper pulp, simultaneously will be molten to the nano aluminium oxide or imvite modified dose that add functional group modification agent
Agent ultrasonic disperse in ultrasonic washing unit is processed, and so that the nano aluminium oxide or montmorillonite particle diameter in modifying agent solvent is maintained
Nanoscale, then concentrates paper pulp and the nano aluminium oxide carrying out surface modification or imvite modified dose of solvent mixing by processed
Stirred to being mixed thoroughly with reinforcement electric blender afterwards, reuse pattern and copy the concentrated liquid paper taking device to mixed modifier
Slurry carries out copying taking molding, takes out l Water Paper page when moisture reaches 40%～50%, and the pressure delivering to vulcanizing press 15MPa will
After the aqueous cardboard of 15%～20% water content is made in the squeezing of l Water Paper page, copied with pattern and take device with 95 DEG C of temperature to cardboard vacuum
Dried becomes nano modification insulating board, and fiber core is made up of multilamellar modification cardboard.
Referring to Fig. 1, Fig. 3 present invention a kind of, to puncture strength dielectric fiber core based on the height of nano modification be by based on nanometer
Modified height punctures the prepared insulating board of strength dielectric paperboard making process and makes, and described insulating board cylinder is spherical cardboard
Cylinder a, can will be covered with spherical fiber core a outside the voltage equalizing ball portion 1 in converter power transformer outgoing line device structure.
Referring to Fig. 2, Fig. 4 present invention a kind of, to puncture strength dielectric fiber core based on the height of nano modification be by based on nanometer
Modified height punctures the prepared insulating board of strength dielectric paperboard making process and makes, and described insulating board cylinder is cylindrical paper
Plate cylinder b, can will be covered with cylindrical fiber core b outside the guide rod portion 2 in converter power transformer outgoing line device structure.
Referring to the drawings 5, the direct current and power frequency disruptive field intensity of immersion oil modification insulating board is tested, adds nano modification
After agent solvent, the direct current of immersion oil modification insulating board is significantly increased compared with immersion oil blank cardboard with power frequency disruptive field intensity.By
The result shown in cylindricality c on the left of X and Y in Fig. 5 can be seen that the dc breakdown field intensity phase of nanometer alumina modified insulating board
6.61% is increased for immersion oil blank cardboard, power frequency disruptive field intensity increases by 13.11% with respect to immersion oil blank cardboard；By X in Fig. 5
Empty with respect to immersion oil with the dc breakdown field intensity that the result shown in cylindricality d on the right side of Y can be seen that imvite modified insulating board
White board increases by 2.36%, and power frequency disruptive field intensity increases by 12.93% with respect to immersion oil blank cardboard.
Referring to the drawings 5, measure the relative dielectric constant of immersion oil modification insulating board, after adding nano modifier solvent, leaching
The relative dielectric constant of oil modification insulating board has obvious reduction compared with immersion oil blank cardboard.By the cylindricality on the left of Z in Fig. 5
It is lower than the relative dielectric constant of blank cardboard by 17.65% that result shown in c can be seen that nanometer alumina modified insulating board；
Result shown in cylindricality d on the right side of Z in Fig. 5 can be seen that the relative dielectric that imvite modified insulating board is than blank cardboard
Constant is low by 14.52%.
Although disclosed embodiment is as above, its content is only to facilitate understand the technical side of the present invention
Case and the embodiment that adopts, are not intended to limit the present invention.
Claims (7)
1. a kind of strength dielectric paperboard making process is punctured based on the height of nano modification it is characterised in that preparation concretely comprise the following steps：
Discongest device with standard and discongest process liquid paper pulp, simultaneously by nano modifier solvent ultrasonic disperse in ultrasonic washing unit
Reason, with the stirring of reinforcement electric blender, reuses after the liquid processing paper pulp and the mixing of nano modifier solvent pattern and copies
Take device that the liquid paper pulp of mixed modifier is carried out copying taking molding, deliver to vulcanizing press and copied after the squeezing of l Water Paper page with pattern and take
Device becomes cardboard to its vacuum drying treatment.
2. a kind of according to claim 1 strength dielectric paperboard making process is punctured based on the height of nano modification, its feature exists
In：Described nano modifier solvent ultrasonic disperse in ultrasonic washing unit adds functional group modification agent when processing, and is finally obtained
Nano modification insulating board through surface modification.
3. a kind of according to claim 2 strength dielectric paperboard making process is punctured based on the height of nano modification, its feature exists
In：Described nano material is nano aluminium oxide or montmorillonite.
4. a kind of according to claim 3 strength dielectric paperboard making process is punctured based on the height of nano modification, its feature exists
In：The particle diameter of described nano aluminium oxide is 10～100nm, and the particle diameter of montmorillonite is 200～400 mesh.
5. a kind of according to claim 3 or 4 strength dielectric paperboard making process is punctured based on the height of nano modification, its feature
It is：The quality that described nano aluminium oxide adds is the 2.3～2.7% of insulating board quality, and the quality that montmorillonite adds is exhausted
The 0.8～1.2% of edge Quality of Board.
6. a kind of strength dielectric fiber core is punctured based on the height of nano modification it is characterised in that：Insulating board cylinder adopts right to want
Ask arbitrarily described in 1-5 and a kind of puncture the insulating board system that strength dielectric paperboard making process is obtained based on the height of nano modification
Become, insulating board cylinder is spherical fiber core (a), the voltage equalizing ball portion (1) in converter power transformer outgoing line device structure is placed in spherical
In fiber core (a).
7. a kind of strength dielectric fiber core is punctured based on the height of nano modification it is characterised in that：Insulating board cylinder adopts right to want
Ask arbitrarily described in 1-5 and a kind of puncture the insulating board system that strength dielectric paperboard making process is obtained based on the height of nano modification
Become, insulating board cylinder is cylindrical fiber core (b), and guide rod portion (2) are placed in cylindrical fiber core (b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997352.8A CN106381750A (en) | 2016-11-14 | 2016-11-14 | Production method of high-breakdown-strength insulation paperboard based on nano modification and paperboard cylinder thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997352.8A CN106381750A (en) | 2016-11-14 | 2016-11-14 | Production method of high-breakdown-strength insulation paperboard based on nano modification and paperboard cylinder thereof |
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| Publication Number | Publication Date |
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| CN106381750A true CN106381750A (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610997352.8A Pending CN106381750A (en) | 2016-11-14 | 2016-11-14 | Production method of high-breakdown-strength insulation paperboard based on nano modification and paperboard cylinder thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086418A (en) * | 2021-11-30 | 2022-02-25 | 国网黑龙江省电力有限公司电力科学研究院 | Preparation method and application of surface modification-based nano particle dispersion and modification insulating paperboard |
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| CN104091682A (en) * | 2014-07-29 | 2014-10-08 | 哈尔滨理工大学 | Converter transformer wire outlet device based on nano-modification nonlinear insulating paper boards |
| CN104131494A (en) * | 2014-07-29 | 2014-11-05 | 哈尔滨理工大学 | Nonlinear insulation board based on nano modification and preparation method thereof |
| CN105355265A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | High-strength high-elasticity insulation paper used for transformer |
| CN105696408A (en) * | 2016-04-05 | 2016-06-22 | 哈尔滨理工大学 | Nano modified paper based on surface modification and preparation method thereof |
| WO2016112523A1 (en) * | 2015-01-16 | 2016-07-21 | 阿尔斯通技术有限公司 | Nanometer aluminium oxide modified insulation paper and preparation method thereof |
-
2016
- 2016-11-14 CN CN201610997352.8A patent/CN106381750A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091682A (en) * | 2014-07-29 | 2014-10-08 | 哈尔滨理工大学 | Converter transformer wire outlet device based on nano-modification nonlinear insulating paper boards |
| CN104131494A (en) * | 2014-07-29 | 2014-11-05 | 哈尔滨理工大学 | Nonlinear insulation board based on nano modification and preparation method thereof |
| WO2016112523A1 (en) * | 2015-01-16 | 2016-07-21 | 阿尔斯通技术有限公司 | Nanometer aluminium oxide modified insulation paper and preparation method thereof |
| CN105355265A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | High-strength high-elasticity insulation paper used for transformer |
| CN105696408A (en) * | 2016-04-05 | 2016-06-22 | 哈尔滨理工大学 | Nano modified paper based on surface modification and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086418A (en) * | 2021-11-30 | 2022-02-25 | 国网黑龙江省电力有限公司电力科学研究院 | Preparation method and application of surface modification-based nano particle dispersion and modification insulating paperboard |
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Application publication date: 20170208 |
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