CN112461707B - Inspection formula solution for plastic cable protection pipe - Google Patents
Inspection formula solution for plastic cable protection pipe Download PDFInfo
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- CN112461707B CN112461707B CN202011368296.4A CN202011368296A CN112461707B CN 112461707 B CN112461707 B CN 112461707B CN 202011368296 A CN202011368296 A CN 202011368296A CN 112461707 B CN112461707 B CN 112461707B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
Abstract
The invention discloses a checking formula solution for a plastic cable protection pipe, which is an unsaturated solution consisting of zinc chloride, potassium chloride, sodium chloride, calcium chloride, potassium sulfate, triglyceride, potassium sorbate and purified water; the inspection formula solution for the modified polypropylene plastic cable protection pipe is a mixed solution consisting of absolute ethyl alcohol, glycerol, propanol, glycol, triglyceride, potassium sorbate and a purified water solution. By developing a special solution solvent formula, the method can accurately identify the characteristic of the physical variable density of the plastic protection pipe, screen the quality grade of related plastic cable protection pipe products, and strictly judge according to related national and electric power standards, thereby providing a powerful guarantee for reducing the loss of purchasers in the first time in a vast site and a construction management site.
Description
Technical Field
The invention belongs to the field of power distribution network construction and electric power material inspection, and particularly relates to an inspection formula solution for a plastic cable protection pipe.
Background
The chlorinated polyvinyl chloride plastic cable protection pipe is mainly manufactured by using chlorinated polyvinyl chloride as a base body; the modified polypropylene plastic cable conduit is produced with modified polypropylene as main base material and through adding additive, stuffing and coloring agent into the base material and forming plastic film.
Solubility is divided into 3 parameters: hydrogen bonds, polar bonds and non-polar bonds, the test formulation solution also has its own solubility parameters. According to the principle of solubility such as similarity and intermiscibility, when a formula is designed, the final mass fraction value of the mixed formula solution is designed according to the density monitoring value designed by target parameters and by considering the solubility parameters and the dissolution ranges of inorganic salts, organic substances, alcohols and other substances.
By detecting the development of the formula solution, the acceptance index of the pipe inspection in the actual project and construction unit is solved, so that the receiving risk of the whole batch of products is rapidly judged. Through submitting complex entrusts to inspect, turn into the autonomous examination that the nature of autonomy is higher, with the quality characteristic of product, turn into the performance in formula f solution, shorten entrusts to send a sample, laboratory test ageing, improve efficiency of software testing and circulation acceptance check efficiency.
Disclosure of Invention
The invention discloses a checking formula solution for a plastic cable protection pipe, which can quickly test whether the physical quantity-density index of the cable protection pipe meets the requirements specified by the national standard on site, realize the quick checking and acceptance management of related materials of a power grid and promote the improvement of the overall quality of a product.
The invention particularly relates to a detection formula solution for a chlorinated polyvinyl chloride plastic cable protection pipe, which is an unsaturated solution consisting of zinc chloride, potassium chloride, sodium chloride, calcium chloride, potassium sulfate, triglyceride, potassium sorbate and purified water.
Preferably, the test formula solution comprises at least two of zinc chloride, potassium chloride and sodium chloride as formula basic solutions, at least one of calcium chloride and potassium sulfate is used as a stabilizer, and at least one of triglyceride and potassium sorbate is used as an additive.
Preferably, the basic solution comprises 45-55% by mass of zinc chloride, 1-5% by mass of potassium chloride and 1-5% by mass of sodium chloride; the stabilizer comprises 0.01 to 0.5 mass percent of calcium chloride and 0.01 to 0.5 mass percent of potassium sulfate; the additive comprises 0.01-0.1% by mass of potassium sorbate or triglyceride.
Preferably, the formula solution is an unsaturated solution, and the inspection formula solution is reasonably selected according to the particularity of the inspection environment; in a low-temperature state below 10 ℃, the additive adopts 0.01 to 0.1 mass percent of triglyceride; in a high-temperature state above 35 ℃, the additive adopts 0.01 to 0.1 mass percent of potassium sorbate.
The invention also discloses a detection formula solution for the modified polypropylene plastic cable protection tube, wherein the detection formula solution is a mixed solution consisting of absolute ethyl alcohol, glycerol, propanol, glycol, triglyceride, potassium sorbate and a purified water solution.
Preferably, the test formula solution comprises a formula basic solution composed of at least one of absolute ethyl alcohol and glycerol, at least one of ethylene glycol and propanol is used as a stabilizer, and at least one of triglyceride and potassium sorbate is used as an additive.
Preferably, the basic solution comprises 39-69% by mass of anhydrous ethanol and 0.1-5.0% by mass of glycerol; the stabilizer comprises 0.01-0.5% of glycol and 0.01-0.5% of propanol by mass; the additive comprises 0.01-0.1% by mass of potassium sorbate or triglyceride.
Preferably, the inspection formula solution is reasonably selected according to the specificity of the inspection environment; in a high-temperature state above 35 ℃, the additive adopts 0.01 to 0.1 mass percent of potassium sorbate.
The first inspection formula solution is used for quality inspection of chlorinated polyvinyl chloride plastic cable protection pipes, or the second inspection formula solution is used for quality inspection of modified polypropylene plastic cable protection pipes.
Compared with the prior art, the invention has the following advantages:
the method has the advantages of low toxicity, environmental protection, basically no harm to human bodies, high inspection precision and short measurement time, and is suitable for various construction inspection project sites. Can also effectively purify market protection tube supply environment, strengthen product life, avoid the quality problem product, more can guide the market trend, strengthen enterprise's quality and put into, reduce the use risk of the first side after the tender supply is accomplished, help the enterprise promote the product ability, have the economic benefits who is showing very much.
Drawings
FIG. 1 is a general flow chart of the inspection test of the present invention;
FIG. 2 is a flow chart of the chlorinated polyvinyl chloride pipe density test according to the present invention;
FIG. 3 is a flow chart of the density test of the modified polypropylene pipe of the present invention;
FIG. 4 is a comparative data analysis chart of the modified polypropylene cable protection tube according to the present invention;
FIG. 5 is a graph showing the analysis of the comparative data of the chlorinated polyvinyl chloride cable protection tube according to the present invention.
Detailed Description
The principles and features of the present invention are described below, and the examples are provided for illustration only and are not intended to limit the scope of the present invention.
1. The chlorinated polyvinyl chloride plastic cable protection pipe oriented inspection formula solution comprises the following components:
1) Selecting a solvent solution matrix:
the composition of the solution is as follows: zinc chloride, potassium chloride, sodium chloride, calcium chloride, potassium sulfate, triglyceride, potassium sorbate and purified water;
solution solvent: high-purity purified water;
solution stabilizer: calcium chloride, potassium sulfate;
solution additive: triglycerides, potassium sorbate;
solution base agent: zinc chloride, potassium chloride, sodium chloride;
the solution is mainly referred to the electricity industry standard, section 3 of technical conditions of conduit for power cable: the density on-site acceptance of chlorinated polyvinyl chloride and rigid polyvinyl chloride plastic cable guide is less than 1.6, and the positive and negative deviations of 0.3 are set under the actual test condition.
According to the patent development needs, the following formula solutions are specially selected and prepared by combining the actual conditions on the site:
analytically pure zinc chloride, potassium chloride, sodium chloride, calcium chloride, potassium sulfate, triglyceride, potassium sorbate and pure water are adopted, wherein the mass percent of zinc chloride, potassium chloride, sodium chloride, calcium chloride and potassium sorbate in the formula solution is 45-55%, 1-5% and 1-5% respectively, the mass percent of calcium chloride is 0.01-0.5%, the mass percent of potassium sulfate is 0.01-0.5% and the mass percent of potassium sorbate or triglyceride is 0.01-0.1%.
2) The specific composition types of the solution are as follows:
the density of the solution is 1.60 plus or minus 0.3g/cm < 3 > at 25 ℃, and the solution does not react with the chlorinated polyethylene plastic, the color developing agent, the filling agent, the quicklime and other auxiliary materials.
The density of the I-grade solution reaches 1.60g/cm < 3 >;
the density of the II-grade solution reaches 1.63g/cm < 3 >;
the grade III solution, the density of the solution reaches 1.57g/cm3;
the temperature requirement of the use formula is high, the solubility is influenced by the temperature, the temperature stability is required to be ensured when the test solution is used, the maximum use temperature is not more than 40 ℃, the minimum use temperature is 2 ℃, when the test solution is used at high temperature and low temperature, a part of volume of additives are added, and the mass fractions are reasonably matched according to the temperature state of the field environment: 0.01 to 0.1 percent of potassium sorbate and 0.01 to 0.1 percent of triglyceride.
2. The invention relates to a detection formula solution for a modified polypropylene plastic cable protection pipe and components thereof, which comprise the following contents:
1) Selecting a solvent solution matrix:
the composition of the solution is as follows: absolute ethyl alcohol, glycerol, propanol, glycol, triglyceride, potassium sorbate and purified water;
solution solvent: a small amount of high-purity purified water;
solution stabilizer: ethylene glycol, propanol;
solution additive: triglycerides, potassium sorbate;
solution base agent: absolute ethyl alcohol, glycerol;
the solution is mainly referred to the electric power industry standard, technical conditions of conduit for power cable section 7: technical conditions of power cable guide pipe 7 part: the density field acceptance range of the trenchless modified polypropylene plastic cable conduit is 0.90-0.94, and the maximum positive and negative deviation of 0.1 is set in the actual test condition of 0.89-0.95.
According to the patent development needs, the following formula solutions are specially selected and prepared by combining the actual conditions on the site:
the formula solution comprises 39-69% by mass of absolute ethyl alcohol, 0.1-5.0% by mass of glycerol, 0.01-0.5% by mass of ethylene glycol, 0.01-0.5% by mass of propanol and 0.01-0.1% by mass of potassium sorbate or triglyceride.
2) The specific composition types of the solution are as follows:
the density of the solution is 0.89g/cm 3-0.95 g/cm3 at 25 deg.c, and the solution does not react with the modified polypropylene plastic, color developing agent, stuffing and other supplementary material.
The density of the I-grade solution reaches 0.90g/cm < 3 >;
the level II solution, the density of the solution reaches 0.94g/cm3;
a grade III solution, wherein the density of the solution reaches 0.89g/cm3;
IV-level solution, wherein the density of the solution reaches 0.95g/cm < 3 >;
the temperature requirement of the use formula is high, the solubility is influenced by the temperature, the temperature stability needs to be ensured during use, the highest use temperature is 38 ℃, the lowest use temperature is-3 ℃, when the test solution is used at a high temperature, a part of volume of additives are added, and the mass fraction is reasonably matched according to the temperature state of the field environment: 0.01 to 0.1 percent of potassium sorbate and 0.01 to 0.1 percent of triglyceride.
In order to further demonstrate that the formula solution provided by the invention can effectively discriminate plastic particle protection tubes with density performance not meeting the standard, and the solution test and the precision test are consistent, the results are obtained and analyzed by setting an experimental example and a comparative example and comparing the field test results with the precision test results according to the test procedures shown in fig. 1-3, and the specific steps are as follows:
test site: power distribution site with name of a community
Test solutions: checking and identifying I-IV grade formula solution, checking and identifying I-III grade formula solution
Precision testing: CMA qualification testing organization
The test mode is as follows: comparison of field test and consignment sample delivery test
Comparative example of modified polypropylene-based plastic protective tube:
and (3) inspecting and identifying the I-IV grade formula solution, and testing the density quality of 10 batches of protection tubes on the site.
Identification of MT1 #by field test
Modified polypropylene cable protection tube, diameter 100mm, discrimination failed.
Field example MT2#
Modified polypropylene cable protection tube, diameter 200mm, identification failed.
Field example MT3#
Modified polypropylene cable protection tube, diameter 100mm, failed the identification.
Field example MT4#
The modified polypropylene cable protection tube, 200mm in diameter, passes the identification.
Field example MT5#
The modified polypropylene cable protection tube with the diameter of 100mm passes the identification.
Field example MT6#
The modified polypropylene cable protection tube with the diameter of 100mm passes the identification.
Field example MT7#
The modified polypropylene cable protection tube with the diameter of 100mm passes the identification.
Field example MT8#
The modified polypropylene cable protection pipe with the diameter of 100mm passes the identification.
Field example MT9#
Modified polypropylene cable protection tube, diameter 200mm, failed the identification.
Field example MT10#
Modified polypropylene cable protection tube, diameter 200mm, identification failed.
The physical density test experiment of the precision modified polypropylene accurately measures the density value and compares result errors.
Precise control test MC1#
Modified polypropylene cable protection pipe with diameter of 100mm and test density result of 0.96g/cm 3 Unqualified identification, and consistent results of field test and precision inspection.
Laboratory control MC2#
Modified polypropylene cable protection pipe with diameter of 200mm and density of 0.97g/cm 3 And (5) judging that the test is unqualified, and keeping the on-site test and precision test results consistent.
Laboratory control MC3#
Modified polypropylene cable protection pipe with diameter of 100mm and density of 0.98g/cm 3 And (5) judging that the test is unqualified, and keeping the on-site test and precision test results consistent.
Laboratory control MC4#
Modified polypropylene cable protection pipe with diameter of 200mm and density of 0.92g/cm 3 And (5) judging to be qualified, and keeping the results of the field test and the precision test consistent.
Control laboratory MC5#
Modified polypropylene cable protection pipe with diameter of 100mm and density of 0.91g/cm 3 And (5) judging to be qualified, and keeping the results of the field test and the precision test consistent.
Control laboratory MC6#
Modified polypropylene cable protection tube with diameter of 100mm and density measurementTest 0.91g/cm 3 And (5) judging to be qualified, and keeping the results of field test and precision inspection consistent.
Laboratory control MC7#
Modified polypropylene cable protection pipe with diameter of 100mm and density of 0.92g/cm 3 And (5) judging to be qualified, and keeping the results of field test and precision inspection consistent.
Control laboratory MC8#
Modified polypropylene cable protection pipe with diameter of 100mm and density of 0.93g/cm 3 And (5) judging to be qualified, and keeping the results of field test and precision inspection consistent.
Control laboratory MC9#
Modified polypropylene cable protection pipe with diameter of 200mm and density of 0.99g/cm 3 And (5) judging that the test is unqualified, and keeping the on-site test and precision test results consistent.
Laboratory control MC10#
Modified polypropylene cable protection pipe with diameter of 200mm and density of 0.97g/cm 3 And (5) judging that the test is unqualified, and keeping the on-site test and precision test results consistent.
And (4) inspecting and identifying I-III level formula solution, and testing the density and quality of 10 batches of protection tubes on site.
Comparative example of chlorinated polyvinyl chloride plastic protective tube:
field example CT1#
Chlorinated polyvinyl chloride plastic protective tubes, 100mm in diameter, failed the identification.
Field example CT2#
The chlorinated polyvinyl chloride plastic protective tube with the diameter of 200mm fails the identification.
Field example CT3#
The chlorinated polyvinyl chloride plastic protective tube is electrified, has the diameter of 100mm and fails in identification.
Field example CT4#
Chlorinated polyvinyl chloride plastic protective tubes, 100mm in diameter, failed the identification.
Field example CT5#
The chlorinated polyvinyl chloride plastic protective tube with the diameter of 200mm fails the identification.
Field example CT6#
Chlorinated polyvinyl chloride plastic protective tubes, 150mm in diameter, failed in identification.
Field example CT7#
The chlorinated polyvinyl chloride plastic protective tube with the diameter of 150mm passes the identification.
Field example CT8#
And (3) a chlorinated polyvinyl chloride plastic protection tube with the diameter of 200mm passes the identification.
On site example CT9#
And (3) a chlorinated polyvinyl chloride plastic protection tube with the diameter of 100mm passes the identification.
On site example CT10#
And (3) a chlorinated polyvinyl chloride plastic protection tube with the diameter of 100mm passes the identification.
The physical density test experiment of the precision chlorinated polyvinyl chloride plastic protection pipe accurately measures the density value and compares result errors.
Control example in laboratory CC1#
Chlorinated polyvinyl chloride plastic protective pipe with diameter of 100mm and density test of 2.16g/cm 3 And (5) judging that the test is unqualified, and testing and judging that the field test result is consistent with the comprehensive test result.
Control example in laboratory CC2#
Chlorinated polyvinyl chloride plastic protection pipe with diameter of 200mm and density of 2.03g/cm 3 And (5) judging that the test is unqualified, and testing and judging that the field test result is consistent with the comprehensive test result.
Control example in laboratory CC3#
Chlorinated polyvinyl chloride plastic protection pipe with diameter of 100mm and density test of 2.11g/cm 3 And (5) judging that the test is unqualified, and testing and judging that the field test result is consistent with the comprehensive test result.
Control laboratory CC4#
Chlorinated polyvinyl chloride plastic protective tube with diameter of 100mm and density test of 2.11g/cm 3 And (5) judging that the test is unqualified, and testing and judging that the comprehensive test result is consistent on site.
Control example in laboratory CC5#
Chlorinated polyvinyl chloride plastic protection pipe with diameter of 20mm and density of 2.02g/cm 3 Unqualified judgment and field test judgmentAnd the comprehensive measurement result is consistent.
Control example in laboratory CC6#
Chlorinated polyvinyl chloride plastic protection pipe with diameter of 150mm and density test of 1.95g/cm 3 And (5) judging that the test is unqualified, and testing and judging that the field test result is consistent with the comprehensive test result.
Control laboratory CC7#
Chlorinated polyvinyl chloride plastic protective pipe with diameter of 150mm and density test of 1.56g/cm 3 And (4) judging to be qualified, and judging to be consistent with the comprehensive test result through testing on site.
Control example in laboratory CC8#
Chlorinated polyvinyl chloride plastic protection pipe with diameter of 200mm and density test of 1.57g/cm 3 And (4) judging to be qualified, and judging to be consistent with the comprehensive test result through testing on site.
Control laboratory CC9#
Chlorinated polyvinyl chloride plastic protection pipe with diameter of 100mm and density test of 1.58g/cm 3 And (4) judging to be qualified, and judging to be consistent with the comprehensive test result through testing on site.
Control laboratory CC10#
Chlorinated polyvinyl chloride plastic protective tube with diameter of 100mm and density test of 1.58g/cm 3 And (5) judging to be qualified, and judging to be consistent with the comprehensive test result through field testing.
The results of the alignment test are analyzed as shown in FIGS. 4-5 and the following table.
3. Experimental reference standard, relevant parameter and result description
According to the technical condition of conduit for power cable section 7 of the power industry standard DL/T802.7-2010: non-excavation modified polypropylene plastic cable conduit, standard density qualified interval 0.90g/cm 3-0.94 g/cm3.
According to the technical condition part 3 of conduit for power cable of the standard DL/T802.3-2007 in the power industry: chlorinated polyvinyl chloride and rigid polyvinyl chloride plastic cable conduit (standard density qualified interval less than 1.6g/cm 3).
4. Conclusion of the experiment
The experimental test analyzes the field test solvent and the high-precision laboratory test by setting a comparison example, and determines the experimental result by comparing the field visual inspection solvent result and the laboratory numerical analysis.
We can accurately find that the accuracy of the field test solvent is extremely high, the method is extremely consistent with the results of laboratory test methods, and compared 10 groups of experimental comparison examples cover the diameter range of plastic pipes commonly used in electric power construction and small-residential distribution projects.
In conclusion, the chlorinated polyvinyl chloride and modified polypropylene oriented plastic cable protection pipe inspection formula solution and components can be used for effectively inspecting the cable protection pipe on a construction site or a project construction site, so that the overall quality level of the plastic cable protection pipe is remarkably improved in the construction, construction and goods inspection processes; compared with the traditional entrusted inspection, the method is more efficient and rapid, has strong economic applicability, and can be widely applied to the process of electric power project construction and goods purchasing and inspection.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention, such as replacing the test density or value determination interval with an unsaturated solution prepared from other metal or non-metal composition or combination solution, so as to meet the requirement of the standard density determination of the cable protection tube test, should be included in the scope of the present invention in the cable protection tube density test.
Claims (3)
1. The inspection formula solution for the plastic cable protection pipe comprises an inspection formula solution for a chlorinated polyvinyl chloride plastic cable protection pipe or an inspection formula solution for a modified polypropylene plastic cable protection pipe, and is characterized in that:
the inspection formula solution for the chlorinated polyvinyl chloride plastic cable protection tube comprises a formula basic solution consisting of at least two of zinc chloride, potassium chloride and sodium chloride, and is prepared by taking purified water as a solution solvent, at least one of calcium chloride and potassium sulfate as a stabilizer and at least one of triglyceride and potassium sorbate as an additive; wherein, the basic solution comprises 45 to 55 percent of zinc chloride, 1 to 5 percent of potassium chloride and 1 to 5 percent of sodium chloride by mass percent; the stabilizer comprises 0.01 to 0.5 percent of calcium chloride and 0.01 to 0.5 percent of potassium sulfate; the additive comprises 0.01 to 0.1 percent of potassium sorbate or triglyceride by mass;
the inspection formula solution for the modified polypropylene plastic cable protection tube comprises a formula basic solution consisting of at least one of absolute ethyl alcohol and glycerol, wherein purified water is used as a solution solvent, at least one of ethylene glycol and propanol is used as a stabilizer, and at least one of triglyceride and potassium sorbate is used as an additive; wherein, the basic solution comprises 39 to 69 percent of absolute ethyl alcohol and 0.1 to 5.0 percent of glycerol by mass; the stabilizer comprises 0.01 to 0.5 percent of glycol and 0.01 to 0.5 percent of propanol; the additive comprises 0.01-0.1% of potassium sorbate or triglyceride by mass percent.
2. The test formula solution for the plastic cable protection pipe according to claim 1, wherein the test formula solution for the chlorinated polyvinyl chloride plastic cable protection pipe is an unsaturated solution, in a low temperature state below 10 ℃, and the additive is 0.01-0.1% by mass of triglyceride; in a high-temperature state above 35 ℃, the additive adopts 0.01 to 0.1 mass percent of potassium sorbate.
3. The test formula solution for the plastic cable protection tube as claimed in claim 1, wherein the test formula solution for the modified polypropylene plastic cable protection tube is in a high temperature state of above 35 ℃, and the additive is potassium sorbate in an amount of 0.01 to 0.1% by mass.
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