CN107476118A - Low close flexible paper production technology for the molded insulator of ultra-high/extra-high voltage transformer - Google Patents
Low close flexible paper production technology for the molded insulator of ultra-high/extra-high voltage transformer Download PDFInfo
- Publication number
- CN107476118A CN107476118A CN201710560565.9A CN201710560565A CN107476118A CN 107476118 A CN107476118 A CN 107476118A CN 201710560565 A CN201710560565 A CN 201710560565A CN 107476118 A CN107476118 A CN 107476118A
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- China
- Prior art keywords
- extra
- ultra
- voltage transformer
- production technology
- high voltage
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- 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.)
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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
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
-
- 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
-
- 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
-
- 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
-
- 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
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- 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
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/52—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials wood; paper; press board
Abstract
The invention discloses a kind of low close flexible paper production technology of molded insulator for ultra-high/extra-high voltage transformer, it comprises the following steps：1) cotton fiber and wood-fibred are mixed with beating；2) concentration of slurry is diluted to 0.2 0.6%, removes impurity and foreign matter in slurries, to the dewatering slurries of cleaning, concentration of slurry is promoted to 2 5%；3) the vertical arrangement of manufactured l Water Paper embryo fiber is made using vacuum suction method；4) l Water Paper embryo is pressed in thickness direction, l Water Paper embryo fiber distorts after being pressurized and forms locking state, and obtained low close flexible l Water Paper is used for the production of the molded insulator of ultra-high/extra-high voltage transformer.The production technology of the present invention, optimizes the formula of raw material, makes the existing good pliability of finished product, have very high intensity again, simplify production technology, improve the insulating properties of finished product.Fiber is vertically arranged in the same direction using vacuum suction method, distort locked after being under pressure in order to fiber, further improve the intensity of finished product and tough flexibility.
Description
Technical field
The present invention relates to electrical insulations to manufacture field, particularly a kind of shaping for ultra-high/extra-high voltage transformer
The low close flexible paper production technology of insulating part.
Background technology
The rated voltage of common EHV transformer is in 350KV to 500KV, and the rated voltage of extra-high voltage transformer
In 750KV and more than 750KV.The molded insulator used in ultra-high/extra-high voltage transformer, typically it is used for the wire outlet position of coil
Put, there is being the characteristics of high field intensity, high voltage, high current the position during transformer station high-voltage side bus, so for the exhausted of the position
Edge material has higher mechanical performance, electrical performance demands.And domestic insulating materials manufacturing firm typically uses 100% at present
Softwood pulp is raw material, by optimizing the paper technology and wet therapy forming process of l Water Paper, goes to improve the stability of product.It is because wooden
Fiber finer cell wall crisp fritter, be in chopped fiber state after mashing, in practice it has proved that, the improvement for only relying on technique be can not great-leap-forward lifting
The combination property of product, and for the domestic current still blank of research and development of such product raw material optimization.
The content of the invention
The l Water Paper that the goal of the invention of the present invention is to be directed to the existing ultra-high/extra-high voltage transformer described in background technology is made
Paper technology and the molded insulator mechanical performance of wet therapy forming process production, the problem of electric property is poor, there is provided one kind is used for
The low close flexible insulation paper embryo production technology of the molded insulator of ultra-high/extra-high voltage transformer.
Realize that purpose of the present invention technical scheme is as follows：
A kind of low close flexible paper production technology of molded insulator for ultra-high/extra-high voltage transformer, it includes following step
Suddenly：1) cotton fiber and wood-fibred are mixed with beating；2) concentration of slurry is diluted to 0.2-0.6%, removes impurity in slurries and different
Thing, to the dewatering slurries of cleaning, concentration of slurry is set to be promoted to 2-5%；3) manufactured l Water Paper embryo fiber is made using vacuum suction method
Vertical arrangement；4) l Water Paper embryo is pressed in thickness direction, l Water Paper embryo fiber distorts after being pressurized and forms locking state, obtained low close
Flexible l Water Paper is used for the production of the molded insulator of ultra-high/extra-high voltage transformer.
In such scheme, in step 1, cotton quality percentage is 5-30%, and the percentage of wood-fibred is 70-95%.
In such scheme, in step 2, pass through being diluted in by the equipment energy such as gravity sieve, centrifugal pressure and screen cloth for slurries
More effectively lifting slurries cleannes, then it is more conducive to copy paper through dewatering process lifting concentration.
In such scheme, in step 4, l Water Paper embryo is pressed using press.
Beneficial effects of the present invention are as follows：1) present invention is mixed with beating using cotton fiber and wood pulp cellulose, cotton fiber cell
Wall thickness is real, is not easy brooming, is in long fibre state after mashing.Wood-fibred cell membrane crisp fritter, easy brooming, it is in chopped fiber shape after mashing
State so that finished product l Water Paper had both had the intensity of chopped fiber class product or possessed the flexibility of long fibre class product；2) present invention uses
The slurries for reducing concentration are substantially carried by filtration system effects such as gravity sieve, centrifugal pressure screen clothes than high concentration slurries cleannes
Rise, ensure the electric insulating quality of finished product l Water Paper；3) present invention makes the vertical arrangement of the fiber in slurries using vacuum suction method, in thickness
Spend direction to l Water Paper embryo press, make fiber be pressurized after distortion form locking state, make finished product l Water Paper embryo have more preferable intensity and
Pliability；4) production technology of the invention has obtained significantly simplifying, and can lift the electric property and machine of finished product insulating part
Tool performance, and can improve production efficiency.
Figure of description
Fig. 1 is the schematic diagram that l Water Paper embryo is made in step 3 using vacuum suction method；
Fig. 2 is to make the locked schematic diagram of torsion of fibers to l Water Paper embryo pressure in step 4；
Embodiment
It is below the embodiment of the present invention, following each raw material is calculated according to quality parts ratio：
A kind of low close flexible paper production technology of molded insulator for ultra-high/extra-high voltage transformer, it includes following step
Suddenly：1) cotton fiber and wood-fibred are mixed with beating；2) concentration of slurry is diluted to 0.2-0.6%, removes impurity in slurries and different
Thing, to the dewatering slurries of cleaning, concentration of slurry is set to be promoted to 2-5%；3) as shown in figure 1, being made using vacuum suction method manufactured
The vertical arrangement of l Water Paper embryo fiber；4) as shown in Fig. 2 being pressed in thickness direction to l Water Paper embryo, twisted shape after l Water Paper embryo fiber is pressurized
Into locking state, obtained low close flexible l Water Paper is used for the production of the molded insulator of ultra-high/extra-high voltage transformer.
In such scheme, in step 1, cotton quality percentage is 5-30%, and the percentage of wood-fibred is 70-95%.
In such scheme, in step 2, pass through being diluted in by the equipment energy such as gravity sieve, centrifugal pressure and screen cloth for slurries
More effectively lifting slurries cleannes.Again copy paper is more conducive to through dewatering process lifting concentration.
In such scheme, in step 4, l Water Paper embryo is pressed using press.In process of production, need to select according to technique
Suitable pressure and pressure time, make torsion of fibers locked.
The low close flexible paper production technology of the molded insulator for ultra-high/extra-high voltage transformer of the present invention, optimizes original
The formula of material, long stapled cotton fiber and the wood-fibred of chopped fiber are have selected, make finished product insulation l Water Paper existing flexible well
Property, there is good intensity again, while production technology has obtained great simplification, using low concentration slurries, more conducively removes slurry
Impurity and foreign matter in liquid, lift the insulating properties of finished product.Fiber is set to be vertically arranged in the same direction using vacuum suction method, in order to fibre
Dimension distorts locked, the intensity of lifting insulation l Water Paper finished product after being under pressure.
It should be noted that the foregoing is only several preferred embodiments of the present invention, this hair is not limited to
Bright, although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still
Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced
Change.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention
Protection domain within.
Claims (4)
1. the low close flexible paper production technology of a kind of molded insulator for ultra-high/extra-high voltage transformer, it is characterised in that it is wrapped
Include following steps：1) cotton fiber and wood-fibred are mixed with beating；2) concentration of slurry is diluted to 0.2-0.6%, removed in slurries
Impurity and foreign matter, to the dewatering slurries of cleaning, concentration of slurry is set to be promoted to 2-5%；3) made using vacuum suction method manufactured wet
The vertical arrangement of paper embryo fiber；4) l Water Paper embryo is pressed in thickness direction, l Water Paper embryo fiber distorts after being pressurized and forms locking state, makes
The low close flexible l Water Paper obtained is used for the production of the molded insulator of ultra-high/extra-high voltage transformer.
2. the low close flexible paper production technology of the molded insulator according to claim 1 for ultra-high/extra-high voltage transformer,
It is characterized in that：In described step 1, cotton quality percentage is 5-30%, and the percentage of wood-fibred is 70-95%.
3. the low close flexible paper production technology of the molded insulator according to claim 1 for ultra-high/extra-high voltage transformer,
It is characterized in that：In described step 2, slurries after diluted concentration through equipment such as gravity sieve, centrifugal pressure and screen clothes by removing
Impurity in slurries, then it is more conducive to copy paper through dewatering process lifting concentration.
4. the low close flexible paper production technology of the molded insulator according to claim 1 for ultra-high/extra-high voltage transformer,
It is characterized in that：In described step 4, l Water Paper embryo is pressed using press, changes machine direction in l Water Paper embryo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560565.9A CN107476118A (en) | 2017-07-11 | 2017-07-11 | Low close flexible paper production technology for the molded insulator of ultra-high/extra-high voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560565.9A CN107476118A (en) | 2017-07-11 | 2017-07-11 | Low close flexible paper production technology for the molded insulator of ultra-high/extra-high voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107476118A true CN107476118A (en) | 2017-12-15 |
Family
ID=60595059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710560565.9A Pending CN107476118A (en) | 2017-07-11 | 2017-07-11 | Low close flexible paper production technology for the molded insulator of ultra-high/extra-high voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107476118A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU571538A1 (en) * | 1975-12-19 | 1977-09-05 | Марийский Филиал Всесоюзного Научно-Производственного Объединения Целлюлозно-Бумажной Промышленности | Mass for making electric insulation board |
| CN2047628U (en) * | 1989-06-02 | 1989-11-15 | 孙中武 | Laminated paper board with low flexibility |
| CN101783237A (en) * | 2009-09-21 | 2010-07-21 | 湖南广信电工科技股份有限公司 | Process for producing insulating rectangular stay of transformer |
| CN203960684U (en) * | 2014-03-24 | 2014-11-26 | 魏德曼电力绝缘科技（嘉兴）有限公司 | A kind of high voltage power transformer insulation profiled member l Water Paper base |
| CN104988809A (en) * | 2015-06-26 | 2015-10-21 | 浙江凯恩特种材料股份有限公司 | High voltage resistant electrolytic capacitor paper and preparation method thereof |
-
2017
- 2017-07-11 CN CN201710560565.9A patent/CN107476118A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU571538A1 (en) * | 1975-12-19 | 1977-09-05 | Марийский Филиал Всесоюзного Научно-Производственного Объединения Целлюлозно-Бумажной Промышленности | Mass for making electric insulation board |
| CN2047628U (en) * | 1989-06-02 | 1989-11-15 | 孙中武 | Laminated paper board with low flexibility |
| CN101783237A (en) * | 2009-09-21 | 2010-07-21 | 湖南广信电工科技股份有限公司 | Process for producing insulating rectangular stay of transformer |
| CN203960684U (en) * | 2014-03-24 | 2014-11-26 | 魏德曼电力绝缘科技（嘉兴）有限公司 | A kind of high voltage power transformer insulation profiled member l Water Paper base |
| CN104988809A (en) * | 2015-06-26 | 2015-10-21 | 浙江凯恩特种材料股份有限公司 | High voltage resistant electrolytic capacitor paper and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘桂德: "成型绝缘件添加棉浆的工艺研究", 《华东纸业》 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |
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| RJ01 | Rejection of invention patent application after publication |