CN103437251B

CN103437251B - A kind of production method of bushing shell for transformer insulating paper

Info

Publication number: CN103437251B
Application number: CN201310306074.3A
Authority: CN
Inventors: 万建平; 陶荣龙; 韩建胜; 丁少华
Original assignee: TAIZHOU XINYUAN ELECTRICAL EQUIPMENT CO Ltd
Current assignee: TAIZHOU XINYUAN ELECTRICAL EQUIPMENT CO Ltd
Priority date: 2013-07-19
Filing date: 2013-07-19
Publication date: 2016-06-22
Anticipated expiration: 2033-07-19
Also published as: CN103437251A

Abstract

The invention discloses a kind of multi-cylinder fourdrinier machine and produce the production method of bushing shell for transformer insulating paper。Wood pulp by, after adding pure water and carrying out size degradation, defibrination, storage slurry, punching slurry dilution, forming l Water Paper tire through head box online, then through squeeze, dries, batching, rewinding, inspection, form finished product after packing and put in storage, adopting the bushing shell for transformer insulating paper that this method produces, the electrical conductivity of paper is low, and dielectric loss is little, tightness is low, and oil absorption is good, and air permeability is moderate, percentage elongation is big, intensity is good, quantitatively, uniform moisture stable, consistency of thickness, yield is high, and energy consumption is low。

Description

A kind of production method of bushing shell for transformer insulating paper

Technical field

The present invention relates to the production method of a kind of bushing shell for transformer insulating paper, belong to paper making process technique field。

Background technology

Existing bushing shell for transformer insulating paper generally produces with cylinder single cylinder or double-cylinder paper machine, first by wood pulp size degradation, through pulling an oar, manufacturing paper with pulp, molding, is fabricated by through operations such as squeezing, dry, batch。This production method yields poorly, and energy consumption is high；Simultaneously because to slurry, unreasonable by water and technique so that it is the electric property of product and physical property do not reach the requirement of bushing shell for transformer paper using。

Summary of the invention

Goal of the invention: for prior art Problems existing with not enough, the present invention provides the production method of a kind of bushing shell for transformer insulating paper。

Technical scheme: the production method of a kind of bushing shell for transformer insulating paper, comprises the steps:

Step 1, adding after pure water size degradation by electron level wood pulp through hydrabrusher, ground, by steep-taper and double plate, the making beating production line formed carry out defibrination with being pumped to, beating degree is 40-45 ° of SR, and weight in wet base is 7 to 8 grams；

Step 2, it is the slurry of 3.5%～3.8% by pulp storage tower through thickening pump furnishing concentration by the slurry of milled, transition pond is delivered to through stock pump, thickening, through transition pond, the slurry that pump furnishing concentration is 3.0-3.5%, to deliver to pond with slurry with slurry, deliver to through pond with slurry and destroy forebay, the slurry of pump furnishing concentration 2.5-3.5% is thickened through destroying forebay, header box is delivered to by copying forebay stock pump, mixing from header box with the plain boiled water in punching slurry plain boiled water bucket, through four sections of desander desanding, the slurry becoming concentration to be 0.4 ± 0.05% pulp dilution is starched through twice punching of fan pump, then remove the gred head box through pressurized screen；

Step 3, slurry are uniformly distributed online through head box, form, through wet end dehydration, the l Water Paper tire that moisture is 80 ± 1%；

Step 4, l Water Paper tire aspirate to felt through suction roller, felt be sent to the three road press dewaterings l Water Paper to moisture 61 ± 2%；

Step 5, l Water Paper tire cause drying section through carrier rope, the drying section drying and dewatering being made up of dryer felt, dry net, air bells cap, 40 drying cylinders is to the paper of the moisture of 6-8%, caused reeling end by carrier rope again, through DCS on-line checking, moisture, quantitatively up to standard after be wound to lower roll behind the roller footpath of regulation；Not up to standard carries out mark on roller, divests back and make after lower roll；

After step 6, lower roll through laboratorian detect prescription up to standard after deliver to rewinding machine, rewinding becomes the specification of customer requirement, through packaging and warehousing after the assay was approved。

In step 1, described pure water refers to the pure water after reverse osmosis desalinization system purifies, and electrical conductivity < 20 μ S, the weight in wet base preferred value of the slurry of milled is 7.8g。

In step 2, it is preferable that through transition pond, slurry is thickened the slurry that pump furnishing concentration is 3.2%, and to deliver to pond with slurry with slurry, delivers to through pond with slurry and destroies forebay, thickens the slurry of pump furnishing concentration 3% through destroying forebay。

In step 2, slurry is delivered to header box by copying forebay stock pump, is pressing 1:7.5m from header box with the plain boiled water in punching slurry plain boiled water bucket³Ratio mixing。

Beneficial effect: compared with prior art, the sleeve pipe paper that the production method of bushing shell for transformer paper provided by the invention produces, because have employed electron level wood pulp and pure water making beating, and suitable making beating portion, so the sleeve pipe paper electrical conductivity produced is low, dielectric loss is little。Owing to have employed suitable beating and weight in wet base, and electron level wood pulp and third step, the 4th step, the control to the moisture of paper tire, l Water Paper and paper of the 5th step, so the sleeve pipe paper tightness produced is low, oil absorption is good, and air permeability is moderate, and percentage elongation is big, and intensity is good。Thickening and DCS online detection and control owing to have employed the multistage of second step, the sleeve pipe paper produced is quantitative, uniform moisture is stable, consistency of thickness。

Accompanying drawing explanation

Fig. 1 is the inventive method schematic flow sheet。

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention rather than restriction the scope of the present invention, after having read the present invention, the amendment of the various equivalent form of values of the present invention is each fallen within the application claims limited range by those skilled in the art。

As it is shown in figure 1, the production method of bushing shell for transformer insulating paper, comprise the steps:

Step 1, by electron level wood pulp through hydrabrusher with through reverse osmosis desalinization system purify after pure water (electrical conductivity < 20 μ S) size degradation after, defibrination is carried out with being pumped to the making beating production line being made up of steep-taper and double plate mill, beating degree is 42 ° of SR, and weight in wet base is 7.8 grams；

Step 2, it is the slurry of 3.5% by pulp storage tower through thickening pump furnishing concentration by the slurry of milled, transition pond is delivered to through stock pump, thickening, through transition pond, the slurry that pump furnishing concentration is 3.2%, to deliver to pond with slurry with slurry, deliver to through pond with slurry and destroy forebay, the slurry of pump furnishing concentration 3% is thickened through destroying forebay, delivered to header box by copying forebay stock pump, press 1:7.5m from header box with the plain boiled water in punching slurry plain boiled water bucket³Ratio mixing, through four sections of desander desanding, starch the slurry becoming concentration to be 0.4 ± 0.05% pulp dilution through twice punching of fan pump, then remove the gred head box through pressurized screen；

Step 5, l Water Paper tire cause drying section through carrier rope, the paper of the moisture of the drying section drying and dewatering to 6% being made up of dryer felt, dry net, air bells cap, 40 drying cylinders, caused reeling end by carrier rope again, through DCS on-line checking, moisture, quantitatively up to standard after be wound to lower roll behind the roller footpath of regulation；Not up to standard carries out mark on roller, divests back and make after lower roll；

Because have employed electron level wood pulp and pure water making beating, and suitable making beating portion, so the sleeve pipe paper electrical conductivity produced is low, dielectric loss is little。Owing to have employed suitable beating and weight in wet base, and electron level wood pulp and third step, the 4th step, the control to the moisture of paper tire, l Water Paper and paper of the 5th step, so the sleeve pipe paper tightness produced is low, oil absorption is good, and air permeability is moderate, and percentage elongation is big, and intensity is good。Thickening and DCS online detection and control owing to have employed the multistage of second step, the sleeve pipe paper produced is quantitative, uniform moisture is stable, consistency of thickness。

The product of the method production of the present invention and the various aspects of performance parameter value of the product of prior art production is contrasted below by experimental data。

From experimental data table, it can be seen that after implementing the method that the present embodiment provides, product various aspects of performance is obtained for improvement。

Experimental data contrast table

Claims

1. the production method of a bushing shell for transformer insulating paper, it is characterised in that comprise the steps:

Step 1, adding after pure water size degradation by electron level wood pulp through hydrabrusher, ground, by steep-taper and double plate, the making beating production line formed carry out defibrination with being pumped to, beating degree is 40-45 ° of SR；

Step 2, it is the slurry of 3.5% ~ 3.8% by pulp storage tower through thickening pump furnishing concentration by the slurry of milled, transition pond is delivered to through stock pump, thickening, through transition pond, the slurry that pump furnishing concentration is 3.0-3.5%, to deliver to pond with slurry with slurry, deliver to through pond with slurry and destroy forebay, the slurry of pump furnishing concentration 2.5-3.5% is thickened through destroying forebay, header box is delivered to by copying forebay stock pump, mixing from header box with the plain boiled water in punching slurry plain boiled water bucket, through four sections of desander desanding, starch the slurry becoming concentration to be 0.4 ± 0.05% pulp dilution through twice punching of fan pump, then remove the gred head box through pressurized screen；

After step 6, lower roll through laboratorian detect prescription up to standard after deliver to rewinding machine, rewinding becomes the specification of customer requirement, through packaging and warehousing after the assay was approved；

2. the production method of bushing shell for transformer insulating paper as claimed in claim 1, it is characterized in that: in step 2, it is preferable that through transition pond, slurry is thickened the slurry that pump furnishing concentration is 3.2%, and to deliver to pond with slurry with slurry, deliver to through pond with slurry and destroy forebay, thicken the slurry of pump furnishing concentration 3% through destroying forebay。

3. the production method of bushing shell for transformer insulating paper as claimed in claim 1, it is characterised in that: in step 2, slurry is delivered to header box by copying forebay stock pump, is pressing 1:7.5m from header box with the plain boiled water in punching slurry plain boiled water bucket³Ratio mixing。