CN114199925A - Test module of distribution network cable protection pipe on-site Vicat softening temperature measuring device - Google Patents
Test module of distribution network cable protection pipe on-site Vicat softening temperature measuring device Download PDFInfo
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- CN114199925A CN114199925A CN202111374715.XA CN202111374715A CN114199925A CN 114199925 A CN114199925 A CN 114199925A CN 202111374715 A CN202111374715 A CN 202111374715A CN 114199925 A CN114199925 A CN 114199925A
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000010438 heat treatment Methods 0.000 claims abstract description 61
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 10
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 27
- 238000012544 monitoring process Methods 0.000 claims description 24
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 5
- 238000013500 data storage Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 2
- 230000001360 synchronised effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000004801 Chlorinated PVC Substances 0.000 description 3
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/04—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of melting point; of freezing point; of softening point
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a testing module of a distribution network cable protection pipe site Vicat softening temperature measuring device, which comprises a box body and a touch screen, wherein the touch screen is arranged on the front side wall of the box body, the top in the box body is connected with an inner box for containing heating liquid, the bottom in the inner box is uniformly and fixedly connected with a platinum resistor protection sleeve, and the top of the platinum resistor protection sleeve is fixedly connected with a platinum resistor for heating; the bottom in the inner box is connected with a driving structure for flowing of heating liquid; the bottom in the box body is connected with a synchronous lifting structure for lifting; the top of the synchronous lifting structure is connected with a measuring structure for measuring, and the measuring structure comprises a digital display dial indicator, a straight rod, a weight, a supporting sleeve, a pressing pin and a connecting plate; through the mode, the lifting processing is not needed manually, and the rapid detection is facilitated.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a test module of a distribution network cable protection pipe field Vicat softening temperature measuring device.
Background
The chlorinated polyvinyl chloride (CPVC) plastic cable protection pipe and the modified polypropylene (MPP) plastic cable protection pipe are processed and formed by adding necessary processing aids, are improved power sheath pipes with excellent heat resistance, are suitable for laying power cables, play a role in guiding and protecting, have the excellent physical and chemical properties which are increasingly emphasized by industries such as power, communication and the like and are widely applied, and adopt the power cable protection pipe with high heat resistance for laying power cable pipelines, so that domestic power grids are used on a large scale.
The method comprises the following steps of reflecting a group of indexes of the performance of the cable protection pipe at the Vicat softening temperature, designing a measuring device for improving the performance of the Vicat softening temperature of the cable protection pipe, carrying out a traditional laboratory test step, processing and sampling the cable protection pipe to prepare a standard test sample, using a conventional test device of a dimethyl silicone oil heating medium cable protection pipe, requiring a heating mode by adopting a standard method, wherein the heating rate is 50 ℃/h, loading a standard weight, starting a test, recording the temperature of a system when a pressing needle is pressed into the test sample for 1mm, and the test time is more than 2h, so that the overall test efficiency is low, and the quick test is not facilitated.
Therefore, a test module of the distribution network cable protection pipe field Vicat softening temperature measuring device is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a testing module of a distribution network cable protection pipe field Vicat softening temperature measuring device, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a distribution network cable protection pipe on-spot vicat softening temperature survey device's test module, includes host system, host system is connected with alarm module, data storage module, power module and data processing module, data processing module is connected with circular temperature field module and load test module, circular temperature field module is to the air heating to keep constant temperature.
Furthermore, the circular temperature field module comprises a temperature calibration module, a circulating air module, a temperature monitoring module and a circular heating module.
Furthermore, the difference between the monitoring values of the temperature calibration module and the temperature monitoring module is less than 0.1 ℃.
Furthermore, the temperature calibration module and the temperature monitoring module adopt a temperature platinum resistor acquisition probe.
Furthermore, the circulating air module adopts a fan.
Furthermore, the circular heating module adopts an annular electric heating pipe and a circular cabin body, and the annular electric heating pipe is arranged at the bottom in the circular cabin body.
Further, the load testing module comprises a displacement monitoring module and a load module.
Furthermore, the displacement monitoring module adopts a dial indicator integration module.
Furthermore, the load module comprises a weight, a load supporting bracket and a pressing pin, the load supporting bracket is arranged on the dial indicator integrated module, the pressing pin is arranged on the load supporting bracket, and the weight is arranged between the pressing pin and a probe of the dial indicator integrated module.
The invention has the beneficial effects that:
the invention can carry out precise auxiliary test when the Vicat softening temperature index of the sampled cable protection pipe is tested on site quickly, has high integral test efficiency and is beneficial to quick test; the Vicat softening temperature index of the pipe is tested by heating the sample with air, the existing dimethyl silicone oil heating equipment is replaced, and the pressure reduction time is shortened by adopting a gradient heating temperature rise curve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a test module according to the present invention.
FIG. 2 is a schematic view of a circular thermal field module according to the present invention.
FIG. 3 is a schematic view of a circular heating module of the present invention.
FIG. 4 is a schematic diagram of a load testing module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
As shown in fig. 1-4, a testing module of a distribution network cable protection tube on-site vicat softening temperature measuring device comprises a main control module, the main control module is connected with an alarm module, a data storage module, a power supply module and a data processing module, the data processing module is connected with a round temperature field module and a load testing module, the round temperature field module comprises a temperature calibration module, a circulating air module, a temperature monitoring module and a round heating module, the difference between the monitoring values of the temperature calibration module and the temperature monitoring module is less than 0.1 ℃, the temperature calibration module and the temperature monitoring module adopt a temperature platinum resistance acquisition probe, the circulating air module adopts a fan, the round heating module adopts an annular electric heating tube and a round cabin body, the annular electric heating tube is arranged at the inner bottom of the round cabin body, the round temperature field module heats air, and the constant temperature is kept, the heating and cooling speed of the air heating mode is high, the rapid detection is facilitated, meanwhile, the rapid cooling is facilitated, and the continuous monitoring is facilitated.
The load testing module comprises a displacement monitoring module and a load module, the displacement monitoring module adopts a dial indicator integrated module, the load module comprises weights, a load supporting bracket and a pressing pin, the load supporting bracket is installed on the dial indicator integrated module, the pressing pin is installed on the load supporting bracket, and the weights are arranged between the pressing pin and a probe of the dial indicator integrated module.
The data processing module carries out rapid processing on the test temperature and displacement of the circular temperature field module and the load test module, processed data are transmitted to the main control module, the main control module judges and processes the data, the alarm module prompts a specific result of a detection worker, and meanwhile, the main control module stores the data into the data storage module.
Can carry out accurate auxiliary test when carrying out the inspection of vicat softening temperature index to the cable protection pipe that has taken a sample at the scene very fast, whole efficiency of software testing is high, does benefit to the quick test.
Specific monitoring experiments were carried out:
the CPVC pipe material on-site test is carried out, wherein a on-site sampler is used for taking a pipe material into a cylindrical sample by using a cable protection pipe on-site sampling device, and the diameter of the sample is controlled to be about 10 mm; the method comprises the steps of using field test equipment for an air heating medium cable protection pipe, sampling a sample on site, placing the sample into a round cabin body, loading a standard weight into a load test module, starting a test, adopting a rapid heating mode, controlling the heating of a round heating module of a round temperature field module by a main control module, automatically setting a starting heating rate of 20 ℃/min by the round heating module, keeping the temperature in the round cabin body constant by a circulating air module of the round temperature field module, monitoring the temperature in the round cabin body by a temperature monitoring module and a temperature calibration module in real time, rapidly heating the temperature in the round cabin body of a heating pipe of the round heating module to 75 ℃, keeping the heating system constant temperature for oscillation for 2min after the temperature reaches 75 ℃ due to higher heating rate, continuously heating the round cabin body from 75 ℃ to 98 ℃ after the heating pipe of the system is automatically adjusted to 72 ℃/h, and pressing a pressing needle of the load test module into the sample for 1mm, the system temperature was recorded for 25 min.
2, carrying out field test on the MPP pipe, namely taking a cylindrical sample on the pipe by using a field sampler and a cable protection pipe field sampling device, wherein the diameter of the sample is controlled to be about 10 mm; the method comprises the steps of using field test equipment for an air heating medium cable protection tube, sampling a sample on site, placing the sample into a round cabin body, loading a standard weight into a load test module, starting a test, adopting a rapid heating mode, controlling the heating of a round heating module of a round temperature field module by a main control module, automatically setting a starting heating rate of 20 ℃/min by the round heating module, rapidly heating to 130 ℃, keeping the temperature of the round cabin body constant by a circulating air module of the round temperature field module, monitoring the temperature in the round cabin body by a temperature monitoring module and a temperature calibration module in real time, rapidly heating the temperature in the round cabin body of a heating tube of the round heating module to 130 ℃, keeping the heating system at constant temperature and oscillating for 2min after the temperature reaches 130 ℃ due to higher heating rate, continuously heating from 130 ℃ to 160 ℃ when a pressure pin of the load test module is pressed into the sample for 1mm, the system temperature was recorded for 36 min.
The heating temperature field overcomes the defects of large volume, heavy weight and heating by adopting methyl silicone oil of the prior laboratory equipment, reduces the volume of a heating cabin body by adopting an air heating medium, improves the heated flowing space of a tested sample and ensures that the sample is uniformly heated. In order to solve the problem of uneven air temperature field, a cylindrical temperature field is innovatively designed, the air outlet direction of a fan is innovatively designed, the size and the wind direction of a heating air medium flow box are improved through the technical improvement of a heating Vicat temperature field, the distribution size of a useless wind field is reduced, the problem of errors in temperature field distribution is solved, and the temperature rise of equipment is more uniform and consistent during Vicat test. The design of heat preservation and insulation and the sealing of the connecting port. And a novel program control speed regulation temperature rise control system is specially designed for a temperature field, and the temperature rise curve of the system is improved.
Novel auxiliary load test system, including novel test amesdial integrated device and load support, it is big to compare in former laboratory paraphernalia support weight, and is bulky not enough, and the integrated support in disc temperature field has been developed to the pertinence, has reduced the volume and the weight of support, has used circular mechanical contact sealed, and the novel temperature field of design development is arranged, uses circular closely to distribute to arrange and replaces traditional order rectangle to arrange, reduces the unstable thermal current convenient operation that the unnecessary heat in air wind field causes, and the test is stable high-efficient.
The round temperature field with the air heating distribution comprises a round air distribution heat circulation cabin body, a heating pipe and a heat circulation air supply device are mounted inside the round air distribution heat circulation cabin body, an embedded temperature platinum resistor collecting probe is mounted on the upper end of an air supply outlet of each channel through a fixing support, and the round air distribution heat circulation air supply device is used for heating a sample to a test temperature according to a quick heating mode set by a program when a quick field Vicat softening temperature test is carried out.
The load test module comprises a novel test dial indicator integration device and a load supporting bracket, and adopts an integrated circular sequence combined weight bracket for fixing the press-in probe, the test weight and the dial indicator and firmly bearing the combined weight with the fixed pressure of 50N and 10N. The weight top is arranged in to the amesdial, places on the support top for to the control of load descending distance displacement when the vicat softening temperature test, weight upper portion is hugged closely to the amesdial buckle lower extreme, along with the sample stability of impressing heavy object weight and measurement vestige in the auxiliary stay control test process.
The heat circulation air supply device comprises a heating pipe and a heating fan and is used for constructing a constant air supply heating system. The circulating heating medium is air, the heating fan is fixed at the bottom of the circular thermal field, the heating air supply is uniformly upward to discharge air, and the air flows from the upper part of the test cabin at the bottom of the test sample support.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. Distribution network cable protection pipe on-site vicat softening temperature survey device's test module, including host system, its characterized in that: the main control module is connected with an alarm module, a data storage module, a power supply module and a data processing module, the data processing module is connected with a circular temperature field module and a load testing module, and the circular temperature field module heats air and keeps constant temperature.
2. The distribution network cable protection pipe field Vicat softening temperature measuring device test module according to claim 1, characterized in that: the circular temperature field module comprises a temperature calibration module, a circulating air module, a temperature monitoring module and a circular heating module.
3. The distribution network cable protection pipe field Vicat softening temperature measuring device test module according to claim 2, characterized in that: the difference between the monitoring values of the temperature calibration module and the temperature monitoring module is less than 0.1 ℃.
4. The distribution network cable protection pipe field Vicat softening temperature measuring device test module according to claim 3, characterized in that: the temperature calibration module and the temperature monitoring module adopt a temperature platinum resistor acquisition probe.
5. The distribution network cable protection pipe field Vicat softening temperature measuring device test module according to claim 4, characterized in that: the circulating air module adopts a fan.
6. The distribution network cable protection pipe field Vicat softening temperature measuring device test module according to claim 5, characterized in that: the circular heating module adopts an annular electric heating pipe and a circular cabin body, and the annular electric heating pipe is arranged at the bottom in the circular cabin body.
7. The distribution network cable protection pipe field Vicat softening temperature measuring device test module according to claim 1, characterized in that: the load testing module comprises a displacement monitoring module and a load module.
8. The distribution network cable protection pipe field Vicat softening temperature measuring device test module according to claim 7, characterized in that: the displacement monitoring module adopts a dial indicator integration module.
9. The testing module of the distribution network cable protection tube field Vicat softening temperature measuring device according to claim 8, wherein the load module comprises a weight, a load supporting bracket and a pressing pin, the load supporting bracket is installed on the dial indicator integration module, the pressing pin is installed on the load supporting bracket, and the weight is arranged between the pressing pin and a probe of the dial indicator integration module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111374715.XA CN114199925A (en) | 2021-11-19 | 2021-11-19 | Test module of distribution network cable protection pipe on-site Vicat softening temperature measuring device |
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| CN202111374715.XA CN114199925A (en) | 2021-11-19 | 2021-11-19 | Test module of distribution network cable protection pipe on-site Vicat softening temperature measuring device |
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|---|---|---|---|---|
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