CN109535598A - Power cable communicates protection pipe - Google Patents

Power cable communicates protection pipe Download PDF

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Publication number
CN109535598A
CN109535598A CN201811428582.8A CN201811428582A CN109535598A CN 109535598 A CN109535598 A CN 109535598A CN 201811428582 A CN201811428582 A CN 201811428582A CN 109535598 A CN109535598 A CN 109535598A
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CN
China
Prior art keywords
accounting
protection pipe
power cable
wall
lead
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Pending
Application number
CN201811428582.8A
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Chinese (zh)
Inventor
葛雅菁
方韬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU JIETONG CABLE PROTECTION TUBE CO Ltd
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HANGZHOU JIETONG CABLE PROTECTION TUBE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN201811428582.8A priority Critical patent/CN109535598A/en
Publication of CN109535598A publication Critical patent/CN109535598A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/04—Installations of electric cables or lines in or on the ground or water in surface ducts; Ducts or covers therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C08K2003/328—Phosphates of heavy metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

Power cable communicates protection pipe, belong to cable protection pipe technical field, using extrusion molding structure, duct wall includes inner wall and outer wall, forming ingredient includes base-material PVC68.5~72.5%, stabilizer lead sulfate tribasic 2.9~3.5%, dibasic lead phosphate 0.65~0.95%, filler-calcium carbonate 11.5~14.5%, lubricant stearic acid lead 0.45~0.68%, odium stearate 0.36~0.49%, produce auxiliary agent barium sulfate 0.32~0.52%, dispersing agent paraffin 0.45~0.65%, property-improving agent ACR401 is 1.6~2.7%, CPE is 2.1~3.5%, DOP is 1.5~2.8%；It is all promoted using the impact strength of this ingredient component and accounting PVC pipe obtained, tensile strength, bearing capacity twice or more to existing pvc pipe, also obtains extraordinary effect in practical engineering applications.

Description

Power cable communicates protection pipe
Technical field
The invention belongs to cable protection pipe technical fields, and in particular to a kind of power cable communication protection pipe.
Background technique
Cable protection pipe is mostly installed at the location that communication cable intersects with power line, prevents power line from broken string occurs and causes Short circuit accident causes communication cable and wirerope to charge, to protect cable, interchanger, machine core board, so that complete machine is not burned, Certain buffer action is also functioned to power line magnetic interference, existing power cable communication protection pipe is main former with polyvinyl chloride resin Material, adds the hard polyethylene pipe of various specifications made of various stabilizers, has corrosion-resistant, high temperature resistant, weight substantially Gently, the features such as project cost is low, long service life, but following deficiency is still remained in actual use:
1) existing pvc pipe notch impact strength is lower, generally can only achieve 5.5KJ/cm2, brittleness is obvious, falls in pipeline It falls, be easy to happen fragmentation in rolling process；
2) cable protection pipe is more demanding for tensile strength as underground pipe, and the tensile strength of existing pvc pipe is substantially no higher than 20MPa, because interior deposited cable is heavier, when drawing cable process to encounter that bend, ground are hanging and the high situations such as convex in ground, pipeline is easy broken It splits, the root growth of the plants such as trees of Near Pipelines may destroy pipeline, and it is easy that pipeline fragmentation, which is embedded in ground further aspect, Underground water is easily accessible in pipeline, and in addition the rodents such as mouse easily enter pipeline, and internally the degree of safety of deposited cable constitutes danger Danger；
3) existing using PVC is each group distribution ratio of base-material in process of manufacture poor fluidity, be easy to cause wall unevenness even, with And tubing healing line low strength, cause unstable quality, tubing intensity uneven, is with φ 120mm pipeline in pressure-bearing experiment Example tests water injection pressure substantially within 2MPa；
4) production cost can suitably be reduced using pearl filler in production process, but pipeline is caused to be easy to produce stress hair It is white, influence product appearance.
In addition, existing pvc pipe pipeline outer wall uses circular configuration substantially, the length specification of pipeline has 6 meters, 8 meters substantially, therefore Carrying, entrucking and stacking process are all relatively difficult in storage and transportation, work progress, and circular outer wall causes construction personnel that can not make power, heap It puts and is easy to be scattered, be easy to slide in manual handling, so also often will appear the violation operation in rolling tube road in construction, fall, Engineering situations such as being easy to happen pipeline breaking is rolled, causes that construction intensity is big, at high cost and easy generation safety accident.
Applicant is devoted for years to the production technology in improvement power cable communication protection pipe, product structure to be efficiently modified electricity The various performance characteristics of power cable communication protection pipe are produced with gradually solving power cable communication protection pipe, are deposited in use process The problem of, the present invention proposes solution for the problems of above-mentioned existing PVC pipeline.
Summary of the invention
The present invention is directed to communicate the molding materials formula of protection pipe by improving power cable to provide a kind of power cable Protection pipe technical solution is communicated, to overcome defect and deficiency existing in the prior art.
The power cable communicates protection pipe, and using extrusion molding structure, duct wall includes inner wall and outer wall, and molding is matched Material includes base-material PVC, stabilizer lead sulfate tribasic, dibasic lead phosphate, filler-calcium carbonate and toner material, it is characterised in that:
The weight accounting of the component includes: that base-material PVC accounting is 68.5~72.5%, and stabilizer lead sulfate tribasic accounting is 2.9~3.5%, dibasic lead phosphate accounting 0.65~0.95%, filler-calcium carbonate accounting 11.5~14.5%；
When extrusion molding ingredient also included component and corresponding weight accounting include: lubricant stearic acid lead accounting 0.45~ 0.68%, odium stearate accounting 0.36~0.49% produces auxiliary agent barium sulfate accounting 0.32~0.52%, dispersing agent paraffin accounting 0.45~0.65% and property-improving agent ACR401 accounting 1.6~2.7%, CPE accounting 2.1~3.5%, DOP accounting 1.5~ 2.8%。
The power cable communicates protection pipe, it is characterised in that the base-material PVC accounting is 70.5~71.5%, excellent Select 71%.
The power cable communicates protection pipe, it is characterised in that the stabilizer lead sulfate tribasic accounting is 3.1 ~3.3%, dibasic lead phosphate accounting 0.75~0.85%, preferred embodiment be lead sulfate tribasic accounting be 3.2%, dibasic phosphorus Lead plumbate accounting 0.8%.
The power cable communicates protection pipe, it is characterised in that the filler-calcium carbonate accounting 12.5~13.5%, it is excellent Selecting scheme is 12.8%, and calcium carbonate fineness mesh number is not less than 100 mesh.
The power cable communicates protection pipe, it is characterised in that and the lubricant stearic acid lead accounting 0.52~ 0.66%, odium stearate accounting 0.38~0.46%, preferred embodiment are lead stearate accounting 0.58%, odium stearate accounting 0.45%.
The power cable communicates protection pipe, it is characterised in that and the production auxiliary agent barium sulfate accounting 0.38~ 0.48%, preferably 0.44%；The dispersing agent paraffin accounting 0.48~0.62%, preferably 0.55%.
The power cable communicates protection pipe, it is characterised in that the property-improving agent ACR401 accounting 1.8~2.6%, It is preferred that 2.2%；The CPE accounting 2.4~3.2%, preferably 2.6%；The DOP accounting 1.8~2.6%, preferably 2.4%.
The power cable communicates protection pipe, it is characterised in that and the extrusion molding structure includes inner wall and outer wall, Middle outer wall is connected and composed by the arcwall of one group of identical radian measure and arc length, and the arcwall of one group of identical radian measure and arc length is sequentially connected Constitute petal outer wall construction.
The power cable communicates protection pipe, it is characterised in that the outer wall uses three sections, four sections, five sections, six sections Or one of eight sections of arcwalls mode is sequentially connected composition, is smoothly connected between adjacent two sections of arcwalls using arc.
The power cable communicates protection pipe, it is characterised in that the inner wall is circular configuration, is constituted in inner wall single Pore structure or setting porous structure.
The present invention uses PVC resin for primary raw material, determines PVC and relevant stable agent, lubricant, production auxiliary agent, divides The suitable accounting of powder and property-improving agent each component, not only before the impact strength, tension of riser tubing spend rigid and Bearing capacity and improve product characteristic, be also effectively improved production process, keep extrusion molding production process mixing uniform, it is various Component material is evenly distributed and will not generate bonding, flow material can more preferably in extrusion die and enhance extrusion flowability, gram Calcium carbonate-filled caused stress whitening is taken, synthesis improves product appearance quality and product lumber recovery.
Detailed description of the invention
Fig. 1 is the cross section structure schematic diagram that described eight sections of arcwalls of use constitute outer wall technical solution；
Fig. 2 is the cross section structure schematic diagram that described six sections of arcwalls of use constitute outer wall technical solution；
Fig. 3 is the cross section structure schematic diagram that described five sections of arcwalls of use constitute outer wall technical solution；
Fig. 4 is the cross section structure schematic diagram that described four sections of arcwalls of use constitute outer wall technical solution；
In figure: 1- inner wall, 2- outer wall, 2a- arcwall, 3- duct wall.
Specific embodiment
With reference to the accompanying drawing, invention is further described in detail:
Power cable communicates protection pipe, and using extrusion molding structure, duct wall 3 includes inner wall 1 and outer wall 2, forms institute in ingredient Including component and weight accounting are as follows: base-material PVC accounting 68.5~72.5%, stabilizer lead sulfate tribasic accounting 2.9~ 3.5%, dibasic lead phosphate accounting 0.65~0.95%, filler-calcium carbonate accounting 11.5~14.5%, lubricant stearic acid lead accounting 0.45~0.68%, odium stearate accounting 0.36~0.49% produces auxiliary agent barium sulfate accounting 0.32~0.52%, dispersing agent paraffin Accounting 0.45~0.65% and property-improving agent ACR401 accounting 1.6~2.7%, CPE accounting 2.1~3.5%, DOP accounting 1.5 ~2.8%；The each component rational proportion can preferably promote the impact strength, tensile strength and bearing capacity of tubing, be promoted Pipe thickness uniformity and presentation quality improve lumber recovery and stable product quality, and wherein stabilizer uses tribasic sulfuric acid Rational proportion between lead, dibasic lead phosphate makes tubing have better heat resistance, weatherability and electrical insulating property, can effectively prolong Long tubing service life；The use of the lubricant stearic acid lead matched in right amount can better assure that forming process is stablized, and match in right amount The odium stearate of ratio can improve extrusion flowability as processing aid, and the production auxiliary agent barium sulfate matched in right amount can promote each component The molding mass of composition has better mobility in extrusion die, and the dispersing agent paraffin matched in right amount can promote each component mixing When be evenly distributed, between various component materials uniformly and will not bond, the lumber recovery and uniform wall thickness of formed pipe can be promoted Property, Improving The Quality of Products stability；Property-improving agent ACR401, the CPE matched in right amount can effectively improve toughness and rigidity, effectively Impact strength, the tensile strength of product are promoted, the DOP matched in right amount can effectively improve to reduce production cost and use carbonic acid Calcium improves product appearance quality, while this programme is not less than using fineness mesh number as the position of corner caused by filler stress whitening The calcium carbonate of 100 mesh.
Protection pipe impact strength, tensile strength, bearing capacity, Yi Jiti are communicated further to obtain excellent power cable Riser material manufactures lumber recovery, public errand evenness of wall thickness, product manufacturing quality stability, and each component accounting preferentially uses: base-material PVC Accounting 70.5~71.5%, stabilizer lead sulfate tribasic accounting 3.1~3.3%, dibasic lead phosphate accounting 0.75~0.85%, Filler-calcium carbonate accounting 12.5~13.5%, lubricant stearic acid lead accounting 0.52~0.66%, odium stearate accounting 0.38~ 0.46%, produce auxiliary agent barium sulfate accounting 0.38~0.48%, dispersing agent paraffin accounting 0.48~0.62%, property-improving agent ACR401 accounting 1.8~2.6%, CPE accounting 2.4~3.2%, DOP accounting 1.8~2.6%.
For still more preferably scheme: base-material PVC accounting 71%, stabilizer lead sulfate tribasic accounting are 3.2%, dibasic Lead phosphate accounting 0.8%, filler-calcium carbonate 12.8%, lubricant stearic acid lead accounting 0.58%, odium stearate accounting 0.45%, production Auxiliary agent barium sulfate accounting 0.44%, dispersing agent paraffin accounting 0.55%, property-improving agent ACR401 accounting 2.2%, CPE accounting 2.6%, DOP accounting 2.4%.
In above-described embodiment, toner material is added on demand, white for white and the orange red tubing color generally used at present Colour tube material adds titanium dioxide, and dosage is 0.11~0.18% by weight percentage, and orange red tubing is using addition molybdate red, dosage It is by weight percentage 3.3~5.4%.
For the technical effect for confirming the present invention program, test specimens production is carried out using following components and proportion, and carries out inspection It surveys:
The recipe ingredient that test specimens molding uses: base-material PVC100kg, stabilizer lead sulfate tribasic 4.5kg, dibasic phosphoric acid Lead 1.2kg, filler-calcium carbonate 18kg, lubricant stearic acid 0.8kg, odium stearate 0.6kg produce auxiliary agent barium sulfate 0.6kg, point Powder paraffin 0.8kg, property-improving agent ACR401 be 3kg, CPE 4kg, DOP 3kg；Sample is made respectively as white, orange red Make, group material hour hands add toner material titanium dioxide 0.2kg to white sample, add toner material molybdate red 6kg for orange red sample；
Using said components formula production white, orange red pendulum test each three pieces with standard batten, surveyed by standard prescriptive procedure Examination notched Izod impact hit intensity is 12~18KJ/cm2, in the prior art be no more than 5.5KJ/cm2It compares, notched Izod impact hit intensity At least promoted twice or more；
Using said components formula production white, orange red test for tensile strength each three pieces with standard batten, by standard regulation side Method is tested using tensile testing machine, and measuring tensile strength is 38~40MPa, is substantially no higher than with tensile strength in the prior art 20MPa is compared, and the tensile strength minimum of the technical program also reaches nearly twice ' ' of prior art peak
Each one section of tubing is tested using said components formula production white, orange red φ 120mm, it, will using standard method of test Test is filled the water after the sealing of both ends, the test water injection pressure minimum value for testing acquisition is 4MPa, with pressure-bearing 2MPa phase in the prior art Than pressure-bearing is also to improve twice；
To sum up test result illustrates, using ingredient component documented by the technical program and accounting PVC pipe obtained, anti-impact Hit intensity, tensile strength, bearing capacity are all promoted twice or more to existing pvc pipe, are also obtained in Practical Project is on probation non- Often good application effect.
For tubing circular outer wall in the prior art construction, storage and transportation the problem of and deficiency, using said components The made power cable communication protection pipe of formula further uses petal type outer wall construction, and as shown in figures 1-4, inner wall 1 is constituted Cable jack hole, can be set to single hole arrangements or porous structure in inner wall 1, outer wall 2 by one group of identical radian measure and arc length arc Shape wall 2a is connected and composed, and the arcwall 2a of one group of identical radian measure and arc length, which is sequentially connected, constitutes petal outer wall construction, one group of phase It is included at least with radian and the arcwall 2a of arc length and uses the smooth company of arc between three sections of arcwalls 2a, adjacent two sections of arcwall 2a It connects, the outer wall 2 being made of one group of arcwall 2a and inner wall 1 are integrated extrusion molding structure.
In above-described embodiment, the arcwall 2a of one group of identical radian measure and arc length connects and composes the outer wall with petal-shaped structure 2, the arcwall 2a of one group of identical radian measure and arc length is using the side one of three sections, four sections, five sections, six sections or eight sections arcwall 2a Formula is sequentially connected composition, and respective external wall 2 constitutes three valves, pintongs, five valves, six valves, eight valve type petal type structures.
The present invention is illustrated according to embodiment, under the premise of not departing from present principles, if the present invention can also make Dry modification and improvement.It should be pointed out that it is all using modes technical solutions obtained such as equivalent substitution or equivalent transformations, all fall within this In the protection scope of invention.

Claims (10)

1. power cable communicates protection pipe, using extrusion molding structure, duct wall (3) includes inner wall (1) and outer wall (2), molding Ingredient includes base-material PVC, stabilizer lead sulfate tribasic, dibasic lead phosphate, filler-calcium carbonate and toner material, and feature exists In:
The weight accounting of the component are as follows: base-material PVC accounting 68.5~72.5%, stabilizer lead sulfate tribasic accounting 2.9~ 3.5%, dibasic lead phosphate accounting 0.65~0.95%, filler-calcium carbonate accounting 11.5~14.5%；
Also included component and corresponding weight accounting when forming ingredient are as follows: lubricant stearic acid lead accounting 0.45~0.68%, hard Resin acid sodium accounting 0.36~0.49%, production auxiliary agent barium sulfate accounting 0.32~0.52%, dispersing agent paraffin accounting 0.45~ 0.65% and property-improving agent ACR401 accounting 1.6~2.7%, CPE accounting 2.1~3.5%, DOP accounting 1.5~2.8%.
2. power cable as described in claim 1 communicates protection pipe, it is characterised in that the base-material PVC accounting is 70.5~ 71.5%, preferably 71%.
3. power cable as described in claim 1 communicates protection pipe, it is characterised in that the stabilizer lead sulfate tribasic Accounting 3.1~3.3%, dibasic lead phosphate accounting 0.75~0.85%, preferred embodiment are lead sulfate tribasic accounting 3.2%, disalt Base lead phosphate accounting 0.8%.
4. power cable as described in claim 1 communicates protection pipe, it is characterised in that the filler-calcium carbonate accounting 12.5 ~13.5%, preferred embodiment 12.8%, and calcium carbonate fineness mesh number is not less than 100 mesh.
5. power cable as described in claim 1 communicates protection pipe, it is characterised in that the lubricant stearic acid lead accounting 0.52~0.66%, odium stearate accounting 0.38~0.46%, preferred embodiment are lead stearate accounting 0.58%, odium stearate accounting 0.45%。
6. power cable as described in claim 1 communicates protection pipe, it is characterised in that the production auxiliary agent barium sulfate accounting 0.38~0.48%, preferably 0.44%；The dispersing agent paraffin accounting 0.48~0.62%, preferably 0.55%.
7. power cable as described in claim 1 communicates protection pipe, it is characterised in that the property-improving agent ACR401 accounting 1.8~2.6%, preferably 2.2%；The CPE accounting 2.4~3.2%, preferably 2.6%；The DOP accounting 1.8~2.6%, preferably 2.4%。
8. power cable as described in claim 1 communicates protection pipe, it is characterised in that the outer wall (2) is by one group of identical radian measure It is connected and composed with the arcwall (2a) of arc length, the arcwall (2a) of one group of identical radian measure and arc length, which is sequentially connected, to be constituted outside petal Wall construction.
9. power cable as claimed in claim 8 communicates protection pipe, it is characterised in that the outer wall (2) uses three sections, four One of section, five sections, six sections or eight sections arcwalls (2a) mode are sequentially connected composition, adopt between adjacent two sections of arcwalls (2a) It is smoothly connected with arc.
10. power cable as claimed in claim 8 communicates protection pipe, it is characterised in that the inner wall (1) is circular configuration, Single hole arrangements or setting porous structure are constituted in inner wall (1).
CN201811428582.8A 2018-11-27 2018-11-27 Power cable communicates protection pipe Pending CN109535598A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113021825A (en) * 2021-02-26 2021-06-25 重庆鸽牌电线电缆有限公司 Self-extinguishing thermal cable production device

Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2000191873A (en) * 1998-12-28 2000-07-11 Servicios Condumex Sa De Cv Polyvinylchloride composition, preparation thereof and cable insulation method using it
CN1306038A (en) * 2000-12-27 2001-08-01 中国科学院长春应用化学研究所 Process for preparing polyvinyl chloride pipe filled by light calcium carbonate and used for passing line through it
CN105860356A (en) * 2016-05-12 2016-08-17 杭州介通电缆保护管有限公司 Octagonal cable protection pipe and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000191873A (en) * 1998-12-28 2000-07-11 Servicios Condumex Sa De Cv Polyvinylchloride composition, preparation thereof and cable insulation method using it
CN1306038A (en) * 2000-12-27 2001-08-01 中国科学院长春应用化学研究所 Process for preparing polyvinyl chloride pipe filled by light calcium carbonate and used for passing line through it
CN105860356A (en) * 2016-05-12 2016-08-17 杭州介通电缆保护管有限公司 Octagonal cable protection pipe and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张世玲，龚晓莹: "《高分子材料成型技术》", 中国建材工业出版社, pages: 71 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113021825A (en) * 2021-02-26 2021-06-25 重庆鸽牌电线电缆有限公司 Self-extinguishing thermal cable production device

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