CN103806325A - Preparation method for transformer insulation paper and system thereof for laboratory - Google Patents
Preparation method for transformer insulation paper and system thereof for laboratory Download PDFInfo
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- CN103806325A CN103806325A CN201410026395.2A CN201410026395A CN103806325A CN 103806325 A CN103806325 A CN 103806325A CN 201410026395 A CN201410026395 A CN 201410026395A CN 103806325 A CN103806325 A CN 103806325A
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Abstract
The invention relates to a preparation method for transformer insulation paper and a system thereof for a laboratory, and belongs to the technical field of transformer equipment. Firstly, a commercial dry pulp board is soaked in deionized water to obtain a wet pulp board, defibering and beating are carried out on the wet pulp board to obtain free pulp, then dehydrating and forming are carried out on the free pulp to obtain a wet insulation page sheet with the required specification, hot-pressing is carried out on the wet insulation page sheet to obtain the insulation paper, and the insulation paper is preserved under the constant-temperature and constant-humidity environment and gets ready for being used in the laboratory. The preparation method for transformer insulation paper and the system thereof have the advantages that the preparation process is simple, the production process of industrial insulation paper is greatly simplified, the cost is low and operation is simple. Equipment of the preparation system is simple correspondingly and small in occupied area. The whole production equipment can be arranged indoors and centralized in a room, so that operation and management are convenient, and the special requirements of scientific research are met.
Description
Technical field
The preparation method and the system thereof that the present invention relates to a kind of use for laboratory transformer insulating paper, belong to transformer equipment technical field.
Background technology
Insulating paper, as the chief component composition of paper oil insulation, is widely used in transformer, cable, the power equipments such as capacitor.Along with the proposition of intelligent grid, the construction of UHV transmission line, the electric pressure of power equipment has been brought up to a new level, and the performance of insulating materials is had higher requirement.In order to obtain the insulating paper that initial performance is more excellent, must optimize magma characteristic and technological process, and the transformer insulating paper that is applicable to laboratory is made platform and is become basis and the necessary requirement of research.
Tradition paper technology is divided into boiling, slagging-off, pulls an oar, manufactures paper with pulp, presses and is dried six major parts, and the basic principle of modern paper technique and traditional paper technology are consistent, but by each flow process mechanization, automation, and extensively adopt sensor, optimal control.Transformer insulating paper difference and general paper using, in electric property, have requirements at the higher level on mechanical performance, hot property and tightness, oil absorbency.Therefore its manufacture process is also more strict complicated, is mainly reflected in following aspect: first, the domestic magma for the manufacture of transformer insulating paper must be 100% not float kp softwood pulp, to guarantee the mechanical strength of insulating paper.Secondly, in paper-making process, to having strict demand by quality, electrical conductivity of water used must remain on lower value, to obtain good insulation characterisitic.Moreover in order to reach high tightness, the pressure adopting when hot pressing is also higher than general paper using.
Mainly comprise hydrabrusher, high concentration scummer for industrial insulating paper manufacturing platform, double plate mill, high frequency is discongested device; low concentration slag removing device, pressurized screen, paper machine; hot press; calendering machines etc., in order to realize storage and the mixing of slurry, conventionally also comprise and kowtow front wood pulp pond; kowtow rear wood pulp pond; kowtow front broke storage chest, kowtow rear broke storage chest, and mixed stock tank.It is large that industrial production platform has floor space, and cost drops into high, and equipment is various, the feature of complicated operation, and once magma amount used is huge for the start operation of industrial production platform in addition, therefore industrial production platform be not suitable for laboratory.And directly utilize industrial production platform to carry out scientific research and testing, and can take production line, impact is normally produced, infeasible economically.
Summary of the invention
The object of the invention is to propose a kind of preparation method and system thereof of use for laboratory transformer insulating paper, by simplifying industrial production flow process, refine committed step, in conjunction with laboratory own characteristic, preparation is applicable to the insulating paper of laboratory research.
The preparation method of the use for laboratory transformer insulating paper that the present invention proposes, comprises the following steps:
(1) business is placed in deionized water with dry pulp plate, soaks 4 hours, soaking temperature is room temperature, obtains pulp lap;
(2) utilize beater to discongest making beating to above-mentioned pulp lap, beating time is 5-25 minute, obtains Xiao Baier beating degree value and be 10 to 40 free stock;
(3) by the above-mentioned free stock of processing through making beating, put into sheet forming equipment and carry out dehydration forming, obtain the insulation l Water Paper page of required specification;
(4) insulation l Water Paper page is carried out to hot-pressing processing, hot pressing pressure be 300 newton/square centimeters to 500 newton/square centimeters, hot pressing temperature is 100 ℃ to 150 ℃, hot pressing time is 5-10 minute, obtains insulating paper;
(5) by the insulating paper of making, be 25 ℃ in temperature, in the constant-temperature constant-humidity environment that relative humidity is 50%, preserve, use in order to laboratory.
The preparation system of the use for laboratory transformer insulating paper that the present invention proposes, comprise bubble stock tank, beater, sheet forming apparatus and hot press, described beater is connected by pipeline with sheet forming apparatus, and described bubble stock tank, beater, sheet forming apparatus and hot press is placed in same indoor.
Preparation method and the system thereof of the use for laboratory transformer insulating paper that the present invention proposes, its advantage is that preparation technology is simple, compared with the prior art, has greatly simplified the production process of industrial insulating paper, therefore has cost low, advantage simple to operate.Because technique of the present invention combines the feature in laboratory self,, make the equipment of preparation also corresponding simple, floor space is little, can a whole set of production equipment be placed in indoor, concentrate in a room, convenient operation, management, met the specific demand of scientific research, utilize preparation system of the present invention, making beating once, can be made 10-30 and open the transformer insulating paper of different size, can meet well the demand of scientific research.
Accompanying drawing explanation
Fig. 1 is the preparation method's of the use for laboratory transformer insulating paper that proposes of the present invention FB(flow block).
Fig. 2 is the structured flowchart of the preparation system of the use for laboratory transformer insulating paper that proposes of the present invention.
Fig. 3 is the dielectric spectral characteristic figure of the 170m transformer insulating paper of preparation method's making of the present invention.
The specific embodiment
The preparation method of the use for laboratory transformer insulating paper that the present invention proposes, its FB(flow block) as shown in Figure 1, comprises the following steps:
(1) business is placed in deionized water with dry pulp plate, soaks 4 hours, soaking temperature is room temperature, obtains pulp lap;
(2) utilize beater to discongest making beating to above-mentioned pulp lap, beating time is 5-25 minute, obtains Xiao Baier beating degree value and be 10 to 40 free stock;
(3) by the above-mentioned free stock of processing through making beating, put into sheet forming equipment and carry out dehydration forming, obtain the insulation l Water Paper page of required specification;
(4) insulation l Water Paper page is carried out to hot-pressing processing, hot pressing pressure be 300 newton/square centimeters to 500 newton/square centimeters, hot pressing temperature is 100 ℃ to 150 ℃, hot pressing time is 5-10 minute, obtains insulating paper;
(5) by the insulating paper of making, be 25 ℃ in temperature, in the constant-temperature constant-humidity environment that relative humidity is 50%, preserve, use in order to laboratory.
The preparation system of the use for laboratory transformer insulating paper that the present invention proposes, its structured flowchart as shown in Figure 2, comprise bubble stock tank, beater, sheet forming apparatus and hot press, described beater is connected by pipeline with sheet forming apparatus, and described bubble stock tank, beater, sheet forming apparatus and hot press is placed in same indoor.
The preparation system of the use for laboratory transformer insulating paper that the present invention proposes, comprises use for laboratory beating equipment, sheet forming equipment and hot-press equipment.The paper pulp fiber that beating equipment utilizes mechanical shear stress, frictional force and hydraulic impact processing to suspend in water.After fiber water suction swollen, under the effect of mechanical force, cell membrane can be subjected to displacement distortion, and then causes primary wall and outer layer of secondary wall to be abolished, fiber generation sub-wire and brooming.In pulping process, fiber also can be cut off, and has further promoted fibrillating process.After making beating, can effectively improve interfibrous adhesion, improve the mechanical strength of insulating paper.Sheet forming equipment is to dewatering through the pulp suspension of making beating, and l Water Paper page obtains insulating.Hot-press equipment applies certain pressure and temperature on insulation l Water Paper page, plays the effect that compresses and dry, and contributes to improve tightness and the uniformity of insulating paper.
In an embodiment of the preparation system of use for laboratory transformer insulating paper of the present invention, bubble stock tank is square stainless steel metal stock tank; Beater is wherein the ZT4 that Zhong Tong experimental assembly Co., Ltd produces, and its appearance and size is 1230mm850mm.The model of sheet forming apparatus is wherein ZT7, and manufacturer is similarly Zhong Tong experimental assembly Co., Ltd, and appearance and size is 600mm500mm.The TM105 that hot press adopts Xin Taiming machinery Co., Ltd to produce, its appearance and size is 700mm800mm.Layout type is that four equipment are arranged in order, and for the ease of test operation, sheet forming apparatus is placed between beater and hot press.
The preparation method of use for laboratory transformer insulating paper that the present invention proposes, is first immersed in insulation dry pulp plate in deionized water 4 hours, soaks the small pieces that after getting well, pulpboard are torn into 25mm × 25mm.Then utilize beater to discongest making beating to the pulpboard of handling well, carry out in this course beating degree detection, until Xiao Baier beating degree value rises to 30.Afterwards according to required page specification, quantitatively, choose processings of manufacturing paper with pulp of suitable slurry, observe the l Water Paper page of dehydration forming, if there is obvious uneven thickness or other problems, need again to manufacture paper with pulp.Being met after the insulation l Water Paper page of requirement, transferred to hot press, choose suitable hot pressing pressure, temperature and time according to thickness, the tightness of required moulding page.Finally the insulation page obtaining is kept in climatic chamber, so that follow-up test research.Climatic chamber Temperature Setting be 251, relative humidity is 50%.
In one embodiment of the present of invention, having prepared thickness is the insulating paper of 170 μ m, and beating time is 20 minutes, and Xiao Baier beating degree value is 30, and Substance is 163g/m
2, hot pressing pressure, temperature, time are chosen for respectively 300 newton/square centimeters, 115 ℃ and 5 minutes.The dielectric spectral characteristic of gained insulating paper as shown in Figure 3, relative dielectric constant in the time of 50HZ lower than 1.57, dielectric loss angle tangent in the time of 50HZ lower than 0.004, excellent performance.
Claims (2)
1. a preparation method for use for laboratory transformer insulating paper, is characterized in that the method comprises the following steps:
(1) business is placed in deionized water with dry pulp plate, soaks 4 hours, soaking temperature is room temperature, obtains pulp lap;
(2) utilize beater to discongest making beating to above-mentioned pulp lap, beating time is 5-25 minute, obtains Xiao Baier beating degree value and be 10 to 40 free stock;
(3) by the above-mentioned free stock of processing through making beating, put into sheet forming equipment and carry out dehydration forming, obtain the insulation l Water Paper page of required specification;
(4) insulation l Water Paper page is carried out to hot-pressing processing, hot pressing pressure be 300 newton/square centimeters to 500 newton/square centimeters, hot pressing temperature is 100 ℃ to 150 ℃, hot pressing time is 5-10 minute, obtains insulating paper;
(5) by the insulating paper of making, be 25 ℃ in temperature, in the constant-temperature constant-humidity environment that relative humidity is 50%, preserve, use in order to laboratory.
2. the preparation system of a use for laboratory transformer insulating paper as claimed in claim 1, it is characterized in that this preparation system comprises bubble stock tank, beater, sheet forming apparatus and hot press, described beater is connected by pipeline with sheet forming apparatus, and described bubble stock tank, beater, sheet forming apparatus and hot press is placed in same indoor.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863022A (en) * | 2015-05-08 | 2015-08-26 | 清华大学 | Method for preparing electrical insulating papers containing broadleaf wood fibers |
| CN104947513A (en) * | 2015-06-09 | 2015-09-30 | 铜陵华洋特种线材有限责任公司 | Preparation method of fire-retardant high-voltage cable paper |
| CN105350380A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Preparation of polyimide fiber insulation paper for transformers |
| CN105350384A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Polylactic acid fiber containing insulating paper for transformers |
| CN105350381A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Preparation of insulating paper for transformers |
| CN105350390A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Preparation of corundum fiber insulating paper for transformers |
| CN105350383A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | High-wear-resistant transformer insulation paper |
| CN105350382A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | High-mechanical-property insulating paper for transformers |
| CN105401485A (en) * | 2015-11-04 | 2016-03-16 | 铜陵三佳变压器有限责任公司 | Insulation paper with long service lifetime for transformer |
| CN105421141A (en) * | 2015-11-04 | 2016-03-23 | 铜陵三佳变压器有限责任公司 | Transformer applicable insulating paper with good high temperature resistance level |
| CN106245412A (en) * | 2016-08-30 | 2016-12-21 | 广东华凯科技股份有限公司 | A kind of manufacture method of multilayer handsheet |
| CN107988842A (en) * | 2016-10-27 | 2018-05-04 | 中国制浆造纸研究院有限公司 | A kind of extra-high voltage low dielectric loss insulating materials and its production method |
| CN110219194A (en) * | 2019-06-06 | 2019-09-10 | 潍坊汇胜绝缘技术有限公司 | A kind of production method for eliminating insulating board surface steam passage print |
| CN110735344A (en) * | 2018-07-20 | 2020-01-31 | 玖龙纸业(天津)有限公司 | novel wood fiber raw material feeding system |
| CN110780168A (en) * | 2019-11-12 | 2020-02-11 | 西南交通大学 | Transformer oil paper insulation test platform and test method under different pressures |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863022A (en) * | 2015-05-08 | 2015-08-26 | 清华大学 | Method for preparing electrical insulating papers containing broadleaf wood fibers |
| CN104947513A (en) * | 2015-06-09 | 2015-09-30 | 铜陵华洋特种线材有限责任公司 | Preparation method of fire-retardant high-voltage cable paper |
| CN105401485A (en) * | 2015-11-04 | 2016-03-16 | 铜陵三佳变压器有限责任公司 | Insulation paper with long service lifetime for transformer |
| CN105421141A (en) * | 2015-11-04 | 2016-03-23 | 铜陵三佳变压器有限责任公司 | Transformer applicable insulating paper with good high temperature resistance level |
| CN105350381A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Preparation of insulating paper for transformers |
| CN105350390A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Preparation of corundum fiber insulating paper for transformers |
| CN105350383A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | High-wear-resistant transformer insulation paper |
| CN105350382A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | High-mechanical-property insulating paper for transformers |
| CN105350380A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Preparation of polyimide fiber insulation paper for transformers |
| CN105350384A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Polylactic acid fiber containing insulating paper for transformers |
| CN106245412A (en) * | 2016-08-30 | 2016-12-21 | 广东华凯科技股份有限公司 | A kind of manufacture method of multilayer handsheet |
| CN106245412B (en) * | 2016-08-30 | 2018-02-09 | 广东华凯科技股份有限公司 | A kind of preparation method of multilayer handsheet |
| CN107988842A (en) * | 2016-10-27 | 2018-05-04 | 中国制浆造纸研究院有限公司 | A kind of extra-high voltage low dielectric loss insulating materials and its production method |
| CN107988842B (en) * | 2016-10-27 | 2020-07-03 | 中国制浆造纸研究院有限公司 | Extra-high voltage low dielectric loss insulating material and production method thereof |
| CN110735344A (en) * | 2018-07-20 | 2020-01-31 | 玖龙纸业(天津)有限公司 | novel wood fiber raw material feeding system |
| CN110219194A (en) * | 2019-06-06 | 2019-09-10 | 潍坊汇胜绝缘技术有限公司 | A kind of production method for eliminating insulating board surface steam passage print |
| CN110780168A (en) * | 2019-11-12 | 2020-02-11 | 西南交通大学 | Transformer oil paper insulation test platform and test method under different pressures |
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