CN105623162A - Production process of PVC tube for protecting high-voltage power cable - Google Patents

Abstract

The invention discloses a novel production process of a PVC tube for protecting a high-voltage power cable. According to the novel production process, the formula and the production process are optimized, and the produced PVC tube is very good in voltage resistance, long in service life and wide in applicable range. The formula comprises the following components in parts by weight: 75-80 parts of CPVC, 37.5-39.8 parts of PVC, 12.5 parts of light calcium carbonate, 2 parts of CPE, 8 parts of MBS, 1 part of ACR, 7-10 parts of a stabilizer, 0.4-0.6 part of stearic acid, 0.5 part of paraffin and 0.6-0.9 part of molybdate red.

Description

Pvc pipe production technology is used in a kind of high voltage power cable protection

Technical field

The present invention relates to a kind of high voltage power cable protection pvc pipe production technology, belong to pvc pipe and make field.

Background technology

PVC (polrvinyl chloride) be a kind of amorphism multi-component plastics, main application is soft (SPVC) and hard (RPVC) two kinds, material has low flammability, high intensity, the performance such as heat-resisting, corrosion-resistant. PVC hard tube is to be mixed with auxiliary agents such as stabilizer, lubricant, secondary process agent, colorant, impact modifier and other additives by polyvinyl chloride resin, through pelletize extrusion molding or an extrusion molding, rubber tube can be replaced, be used for carrying liquid, Korrosionsmedium and being used as cable sleeve.

PVC penetration pipe production line is from raw material to finished product semi-automation production process, the proportioning of raw material, heating-up temperature and water temperature vacuum etc. are all likely to product quality is produced impact, must above-mentioned factor be adjusted, in process of production, the skill set requirements of employee is higher.

It is desirable to provide a kind of new high voltage power cable protection pvc pipe production technology, being all optimized from formula to production technology, the pvc pipe prepared has a good pressure performance, and its long service life is applied widely.

Summary of the invention

Based on the shortcoming that background technology exists; it is an object of the invention to provide a kind of new high voltage power cable protection pvc pipe production technology, be all optimized from formula to production technology, the pvc pipe prepared has good pressure performance; its long service life, applied widely.

The concrete technical scheme of the present invention is as follows:

Pvc pipe production technology is used in a kind of high voltage power cable protection, and its Making programme is as shown in drawings.

Further, it is characterised in that its step is as follows:

(1) dispensing:

Formula components, according to weight portion:

CPVC:75-80

PVC:37.5-39.8

Fine particle calcium carbonate: 12.5

CPE:2

MBS:8

ACR:1

Stabilizer: 7-10

Stearic acid: 0.4-0.6

Paraffin: 0.5

Molybdate red: 0.6-0.9

Must being broken into pieces to particle diameter less than 5cm before configuration by all block stock, weigh by formula list requested number, the adjuvant weighed up loads in Plastic Drum or bag film;

(2) spice:

According to formula, accurately each small powder of pairing and resin, then through blender high-temperature stirring, mix the raw material required by technology, and the material just mixed necessarily uniformly scatters, and is sure not windrow;

(3) die-filling:

A delivers a child and produces the job order that subordinate reaches, and identifies mould specification model, modeling;

After b chooses mould, conscientiously polish with sandpaper. remove foreign material and the thickener of die surface, then with fine sand paper polishing gloss mold surface;

C is all coated with high temperature grease in die screw buckle;

Clean drainage screen is first loaded onto by d, buckles flange, and screw is necessarily tight dead;

E refills shunting section. and shunting section is loaded onto in order, trip bolt;

When f fills this section, it is desired to by dress thermocouple directly over mould;

G finally loads onto core rod and cavity sleeve, can not be firmly excessive during cored rod, prevents from unloading mold damage during core rod. and the screw of fixation clip can not be too tight, and with when producing, material leakage is not easy;

Heating collar is installed and is put in place by h in order. connect thermocouple and power supply;

(4) debugging:

A range estimation adjust the distance between core rod and die cavity equal after fix it;

B such as technical problem, looks for technical staff or production department director to debug;

After c debugging terminates, check that whether circuit is normal;

(5) preset temperature heating:

First open extruder main on and off switch, be then turned on each temp control switch, design temperature: machine barrel 1 ~ 4 district temperature range is 150 ~ 200 DEG C; Merging core temperature range is 150 ~ 170 DEG C of die head 1 ~ 2 district temperature ranges is 150 ~ 190 DEG C; Die head 3 ~ 4 district temperature range is 160 ~ 200 DEG C;

(6) subsequent operation adjustment:

A presses production ordering and changes the calibration sleeve of same size model;

B changes the sheath of sizing tank cooler bin;

C opens air compressor;

D, according to specifications and models, adjusts cutting clamping cylinder height and according to sub-height;

E installs corresponding character wheel, and installs ink;

F, according to production ordering, adjusts the position of rickstand, adjusts substantially Cutting Length;

(7) extrusion debugging:

During a debugging, staff must wear working clothing band glove;

B checks whether charge door has foreign body, clears up and feeds in raw material;

Without material or be only heat engine before die change head and die change in c such as machine barrel, when temperature all reaches 160 ~ 170 DEG C, unlatching main frame;

There is material in d such as machine barrel and for cold, when temperature to reach 170 ~ 175 DEG C, open main frame;

E opens main frame vacuum, is then turned on main frame; Engine speed is slowly opened, 2 turns/min gradually open and cause 6 turns/min;

F, in material extrusion process, opens vacuum tank water valve and opens vacuum pump;

After g etc. expect extrusion die, adjustment bias, discharging bends towards that side and just loosens the screw of that side, the rightabout screw of corresponding fastening. after discharging is in line, can stop adjusting bias;

H draws and tries out material, finely tunes heating-up temperature, and discharging is harder, temperature is promoted 2 ~ 5 DEG C, as discharging is softer, temperature should reduce by 2 ~ 5 DEG C;

I, when discharging has certain tensile force, starts to produce;

J is by average rate traction tubing of joining a regular shift or class, and tubing is pricked perforate with iron wire by the personnel that take personal charge of the shift, and allows air enter in tubing;

K controls the vacuum of vacuum tank, waits tubing to shape. the corresponding water valve opening cooler bin;

Cleaning main frame vacuum;

Setting-out adjusts tubing bias again, adjusts pipe length, measures thickness and weight;

(8) quality inspection, packaging.

The invention have benefit that:

The invention provides a kind of new high voltage power cable protection pvc pipe production technology; all it is optimized from formula to production technology; the pvc pipe prepared has a good pressure performance (pressure performance relative market product improves 30-52%), and its long service life is applied widely.

Accompanying drawing explanation

Accompanying drawing is the process chart of the present invention.

Detailed description of the invention

Embodiment 1:

Pvc pipe production technology is used in a kind of high voltage power cable protection, and its Making programme is as shown in drawings.

Further, it is characterised in that its step is as follows:

(1) dispensing:

Formula components, according to weight portion:

CPVC:75

PVC:37.5

Fine particle calcium carbonate: 12.5

CPE:2

MBS:8

ACR:1

Stabilizer: 7

Stearic acid: 0.4

Paraffin: 0.5

Molybdate red: 0.6

Must being broken into pieces to particle diameter less than 5cm before configuration by all block stock, weigh by formula list requested number, the adjuvant weighed up loads in Plastic Drum or bag film;

(2) spice:

According to formula, accurately each small powder of pairing and resin, then through blender high-temperature stirring, mix the raw material required by technology, and the material just mixed necessarily uniformly scatters, and is sure not windrow;

(3) die-filling:

A delivers a child and produces the job order that subordinate reaches, and identifies mould specification model, modeling;

After b chooses mould, conscientiously polish with sandpaper. remove foreign material and the thickener of die surface, then with fine sand paper polishing gloss mold surface;

C is all coated with high temperature grease in die screw buckle;

Clean drainage screen is first loaded onto by d, buckles flange, and screw is necessarily tight dead;

E refills shunting section. and shunting section is loaded onto in order, trip bolt;

When f fills this section, it is desired to by dress thermocouple directly over mould;

G finally loads onto core rod and cavity sleeve, can not be firmly excessive during cored rod, prevents from unloading mold damage during core rod. and the screw of fixation clip can not be too tight, and with when producing, material leakage is not easy;

Heating collar is installed and is put in place by h in order. connect thermocouple and power supply;

(4) debugging:

A range estimation adjust the distance between core rod and die cavity equal after fix it;

B such as technical problem, looks for technical staff or production department director to debug;

After c debugging terminates, check that whether circuit is normal;

(5) preset temperature heating:

First open extruder main on and off switch, be then turned on each temp control switch, design temperature: machine barrel 1 ~ 4 district temperature range is 150 ~ 200 DEG C; Merging core temperature range is 150 ~ 170 DEG C of die head 1 ~ 2 district temperature ranges is 150 ~ 190 DEG C; Die head 3 ~ 4 district temperature range is 160 ~ 200 DEG C;

(6) subsequent operation adjustment:

A presses production ordering and changes the calibration sleeve of same size model;

B changes the sheath of sizing tank cooler bin;

C opens air compressor;

D, according to specifications and models, adjusts cutting clamping cylinder height and according to sub-height;

E installs corresponding character wheel, and installs ink;

F, according to production ordering, adjusts the position of rickstand, adjusts substantially Cutting Length;

(7) extrusion debugging:

During a debugging, staff must wear working clothing band glove;

B checks whether charge door has foreign body, clears up and feeds in raw material;

Without material or be only heat engine before die change head and die change in c such as machine barrel, when temperature all reaches 160 ~ 170 DEG C, unlatching main frame;

There is material in d such as machine barrel and for cold, when temperature to reach 170 ~ 175 DEG C, open main frame;

E opens main frame vacuum, is then turned on main frame; Engine speed is slowly opened, 2 turns/min gradually open and cause 6 turns/min;

F, in material extrusion process, opens vacuum tank water valve and opens vacuum pump;

After g etc. expect extrusion die, adjustment bias, discharging bends towards that side and just loosens the screw of that side, the rightabout screw of corresponding fastening. after discharging is in line, can stop adjusting bias;

H draws and tries out material, finely tunes heating-up temperature, and discharging is harder, temperature is promoted 2 ~ 5 DEG C, as discharging is softer, temperature should reduce by 2 ~ 5 DEG C;

I, when discharging has certain tensile force, starts to produce;

J is by average rate traction tubing of joining a regular shift or class, and tubing is pricked perforate with iron wire by the personnel that take personal charge of the shift, and allows air enter in tubing;

K controls the vacuum of vacuum tank, waits tubing to shape. the corresponding water valve opening cooler bin;

Cleaning main frame vacuum;

Setting-out adjusts tubing bias again, adjusts pipe length, measures thickness and weight;

(8) quality inspection, packaging.

Result: pressure performance relative market product improves 51%.

Embodiment 2:

Pvc pipe production technology is used in a kind of high voltage power cable protection, and its Making programme is as shown in drawings.

Further, it is characterised in that its step is as follows:

(1) dispensing:

Formula components, according to weight portion:

CPVC:80

PVC:39.8

Fine particle calcium carbonate: 12.5

CPE:2

MBS:8

ACR:1

Stabilizer: 10

Stearic acid: 0.6

Paraffin: 0.5

Molybdate red: 0.9

Must being broken into pieces to particle diameter less than 5cm before configuration by all block stock, weigh by formula list requested number, the adjuvant weighed up loads in Plastic Drum or bag film;

(2) spice:

According to formula, accurately each small powder of pairing and resin, then through blender high-temperature stirring, mix the raw material required by technology, and the material just mixed necessarily uniformly scatters, and is sure not windrow;

(3) die-filling:

A delivers a child and produces the job order that subordinate reaches, and identifies mould specification model, modeling;

After b chooses mould, conscientiously polish with sandpaper. remove foreign material and the thickener of die surface, then with fine sand paper polishing gloss mold surface;

C is all coated with high temperature grease in die screw buckle;

Clean drainage screen is first loaded onto by d, buckles flange, and screw is necessarily tight dead;

E refills shunting section. and shunting section is loaded onto in order, trip bolt;

When f fills this section, it is desired to by dress thermocouple directly over mould;

G finally loads onto core rod and cavity sleeve, can not be firmly excessive during cored rod, prevents from unloading mold damage during core rod. and the screw of fixation clip can not be too tight, and with when producing, material leakage is not easy;

Heating collar is installed and is put in place by h in order. connect thermocouple and power supply;

(4) debugging:

A range estimation adjust the distance between core rod and die cavity equal after fix it;

B such as technical problem, looks for technical staff or production department director to debug;

After c debugging terminates, check that whether circuit is normal;

(5) preset temperature heating:

First open extruder main on and off switch, be then turned on each temp control switch, design temperature: machine barrel 1 ~ 4 district temperature range is 150 ~ 200 DEG C; Merging core temperature range is 150 ~ 170 DEG C of die head 1 ~ 2 district temperature ranges is 150 ~ 190 DEG C; Die head 3 ~ 4 district temperature range is 160 ~ 200 DEG C;

(6) subsequent operation adjustment:

A presses production ordering and changes the calibration sleeve of same size model;

B changes the sheath of sizing tank cooler bin;

C opens air compressor;

D, according to specifications and models, adjusts cutting clamping cylinder height and according to sub-height;

E installs corresponding character wheel, and installs ink;

F, according to production ordering, adjusts the position of rickstand, adjusts substantially Cutting Length;

(7) extrusion debugging:

During a debugging, staff must wear working clothing band glove;

B checks whether charge door has foreign body, clears up and feeds in raw material;

Without material or be only heat engine before die change head and die change in c such as machine barrel, when temperature all reaches 160 ~ 170 DEG C, unlatching main frame;

There is material in d such as machine barrel and for cold, when temperature to reach 170 ~ 175 DEG C, open main frame;

E opens main frame vacuum, is then turned on main frame; Engine speed is slowly opened, 2 turns/min gradually open and cause 6 turns/min;

F, in material extrusion process, opens vacuum tank water valve and opens vacuum pump;

After g etc. expect extrusion die, adjustment bias, discharging bends towards that side and just loosens the screw of that side, the rightabout screw of corresponding fastening. after discharging is in line, can stop adjusting bias;

H draws and tries out material, finely tunes heating-up temperature, and discharging is harder, temperature is promoted 2 ~ 5 DEG C, as discharging is softer, temperature should reduce by 2 ~ 5 DEG C;

I, when discharging has certain tensile force, starts to produce;

J is by average rate traction tubing of joining a regular shift or class, and tubing is pricked perforate with iron wire by the personnel that take personal charge of the shift, and allows air enter in tubing;

K controls the vacuum of vacuum tank, waits tubing to shape. the corresponding water valve opening cooler bin;

Cleaning main frame vacuum;

Setting-out adjusts tubing bias again, adjusts pipe length, measures thickness and weight;

(8) quality inspection, packaging.

Result: pressure performance relative market product improves 30%.

Embodiment 3:

Pvc pipe production technology is used in a kind of high voltage power cable protection, and its Making programme is as shown in drawings.

Further, it is characterised in that its step is as follows:

(1) dispensing:

Formula components, according to weight portion:

CPVC:78

PVC:39

Fine particle calcium carbonate: 12.5

CPE:2

MBS:8

ACR:1

Stabilizer: 7-10

Stearic acid: 0.5

Paraffin: 0.5

Molybdate red: 0.8

Must being broken into pieces to particle diameter less than 5cm before configuration by all block stock, weigh by formula list requested number, the adjuvant weighed up loads in Plastic Drum or bag film;

(2) spice:

According to formula, accurately each small powder of pairing and resin, then through blender high-temperature stirring, mix the raw material required by technology, and the material just mixed necessarily uniformly scatters, and is sure not windrow;

(3) die-filling:

A delivers a child and produces the job order that subordinate reaches, and identifies mould specification model, modeling;

After b chooses mould, conscientiously polish with sandpaper. remove foreign material and the thickener of die surface, then with fine sand paper polishing gloss mold surface;

C is all coated with high temperature grease in die screw buckle;

Clean drainage screen is first loaded onto by d, buckles flange, and screw is necessarily tight dead;

E refills shunting section. and shunting section is loaded onto in order, trip bolt;

When f fills this section, it is desired to by dress thermocouple directly over mould;

G finally loads onto core rod and cavity sleeve, can not be firmly excessive during cored rod, prevents from unloading mold damage during core rod. and the screw of fixation clip can not be too tight, and with when producing, material leakage is not easy;

Heating collar is installed and is put in place by h in order. connect thermocouple and power supply;

(4) debugging:

A range estimation adjust the distance between core rod and die cavity equal after fix it;

B such as technical problem, looks for technical staff or production department director to debug;

After c debugging terminates, check that whether circuit is normal;

(5) preset temperature heating:

First open extruder main on and off switch, be then turned on each temp control switch, design temperature: machine barrel 1 ~ 4 district temperature range is 150 ~ 200 DEG C; Merging core temperature range is 150 ~ 170 DEG C of die head 1 ~ 2 district temperature ranges is 150 ~ 190 DEG C; Die head 3 ~ 4 district temperature range is 160 ~ 200 DEG C;

(6) subsequent operation adjustment:

A presses production ordering and changes the calibration sleeve of same size model;

B changes the sheath of sizing tank cooler bin;

C opens air compressor;

D, according to specifications and models, adjusts cutting clamping cylinder height and according to sub-height;

E installs corresponding character wheel, and installs ink;

F, according to production ordering, adjusts the position of rickstand, adjusts substantially Cutting Length;

(7) extrusion debugging:

During a debugging, staff must wear working clothing band glove;

B checks whether charge door has foreign body, clears up and feeds in raw material;

Without material or be only heat engine before die change head and die change in c such as machine barrel, when temperature all reaches 160 ~ 170 DEG C, unlatching main frame;

There is material in d such as machine barrel and for cold, when temperature to reach 170 ~ 175 DEG C, open main frame;

E opens main frame vacuum, is then turned on main frame; Engine speed is slowly opened, 2 turns/min gradually open and cause 6 turns/min;

F, in material extrusion process, opens vacuum tank water valve and opens vacuum pump;

After g etc. expect extrusion die, adjustment bias, discharging bends towards that side and just loosens the screw of that side, the rightabout screw of corresponding fastening. after discharging is in line, can stop adjusting bias;

H draws and tries out material, finely tunes heating-up temperature, and discharging is harder, temperature is promoted 2 ~ 5 DEG C, as discharging is softer, temperature should reduce by 2 ~ 5 DEG C;

I, when discharging has certain tensile force, starts to produce;

J is by average rate traction tubing of joining a regular shift or class, and tubing is pricked perforate with iron wire by the personnel that take personal charge of the shift, and allows air enter in tubing;

K controls the vacuum of vacuum tank, waits tubing to shape. the corresponding water valve opening cooler bin;

Cleaning main frame vacuum;

Setting-out adjusts tubing bias again, adjusts pipe length, measures thickness and weight;

(8) quality inspection, packaging.

Result: pressure performance relative market product improves 39%.

In sum, it is provided that a kind of new high voltage power cable protection pvc pipe production technology, being all optimized from formula to production technology, the pvc pipe prepared has a good pressure performance, and its long service life is applied widely.

The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention.

Claims (2)

1. pvc pipe production method is used in a high voltage power cable protection, it is characterised in that its step is as follows:

(1) dispensing:

Formula components, according to weight portion:

CPVC:75-80

PVC:37.5-39.8

Fine particle calcium carbonate: 12.5

CPE:2

MBS:8

ACR:1

Stabilizer: 7-10

Stearic acid: 0.4-0.6

Paraffin: 0.5

Molybdate red: 0.6-0.9

Must being broken into pieces to particle diameter less than 5cm before configuration by all block stock, weigh by formula list requested number, the adjuvant weighed up loads in Plastic Drum or bag film;

(2) spice:

According to formula, accurately each small powder of pairing and resin, then through blender high-temperature stirring, mix the raw material required by technology, and the material just mixed necessarily uniformly scatters, and is sure not windrow;

(3) die-filling:

A delivers a child and produces the job order that subordinate reaches, and identifies mould specification model, modeling;

After b chooses mould, conscientiously polish with sandpaper. remove foreign material and the thickener of die surface, then with fine sand paper polishing gloss mold surface;

C is all coated with high temperature grease in die screw buckle;

Clean drainage screen is first loaded onto by d, buckles flange, and screw is necessarily tight dead;

E refills shunting section. and shunting section is loaded onto in order, trip bolt;

When f fills this section, it is desired to by dress thermocouple directly over mould;

G finally loads onto core rod and cavity sleeve, can not be firmly excessive during cored rod, prevents from unloading mold damage during core rod. and the screw of fixation clip can not be too tight, and with when producing, material leakage is not easy;

Heating collar is installed and is put in place by h in order. connect thermocouple and power supply;

(4) debugging:

A range estimation adjust the distance between core rod and die cavity equal after fix it;

B such as technical problem, looks for technical staff or production department director to debug;

After c debugging terminates, check that whether circuit is normal;

(5) preset temperature heating:

First open extruder main on and off switch, be then turned on each temp control switch, design temperature: machine barrel 1 ~ 4 district temperature range is 150 ~ 200 DEG C; Merging core temperature range is 150 ~ 170 DEG C of die head 1 ~ 2 district temperature ranges is 150 ~ 190 DEG C; Die head 3 ~ 4 district temperature range is 160 ~ 200 DEG C;

(6) subsequent operation adjustment:

A presses production ordering and changes the calibration sleeve of same size model;

B changes the sheath of sizing tank cooler bin;

C opens air compressor;

D, according to specifications and models, adjusts cutting clamping cylinder height and according to sub-height;

E installs corresponding character wheel, and installs ink;

F, according to production ordering, adjusts the position of rickstand, adjusts substantially Cutting Length;

(7) extrusion debugging:

During a debugging, staff must wear working clothing band glove;

B checks whether charge door has foreign body, clears up and feeds in raw material;

Without material or be only heat engine before die change head and die change in c such as machine barrel, when temperature all reaches 160 ~ 170 DEG C, unlatching main frame;

There is material in d such as machine barrel and for cold, when temperature to reach 170 ~ 175 DEG C, open main frame;

E opens main frame vacuum, is then turned on main frame; Engine speed is slowly opened, 2 turns/min gradually open and cause 6 turns/min;

F, in material extrusion process, opens vacuum tank water valve and opens vacuum pump;

After g etc. expect extrusion die, adjustment bias, discharging bends towards that side and just loosens the screw of that side, the rightabout screw of corresponding fastening. after discharging is in line, can stop adjusting bias;

H draws and tries out material, finely tunes heating-up temperature, and discharging is harder, temperature is promoted 2 ~ 5 DEG C, as discharging is softer, temperature should reduce by 2 ~ 5 DEG C;

I, when discharging has certain tensile force, starts to produce;

J is by average rate traction tubing of joining a regular shift or class, and tubing is pricked perforate with iron wire by the personnel that take personal charge of the shift, and allows air enter in tubing;

K controls the vacuum of vacuum tank, waits tubing to shape. the corresponding water valve opening cooler bin;

Cleaning main frame vacuum;

Setting-out adjusts tubing bias again, adjusts pipe length, measures thickness and weight;

(8) quality inspection, packaging.

2. the high voltage power cable protection pvc pipe production method described in claim 1 produces the pvc pipe obtained.