CN118225964A - Fireproof cable test system based on temperature intelligent detection - Google Patents
Fireproof cable test system based on temperature intelligent detection Download PDFInfo
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- CN118225964A CN118225964A CN202410643397.XA CN202410643397A CN118225964A CN 118225964 A CN118225964 A CN 118225964A CN 202410643397 A CN202410643397 A CN 202410643397A CN 118225964 A CN118225964 A CN 118225964A
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- 238000012360 testing method Methods 0.000 title claims abstract description 81
- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 230000001681 protective effect Effects 0.000 claims abstract description 30
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 239000007921 spray Substances 0.000 claims description 43
- 239000002828 fuel tank Substances 0.000 claims description 29
- 239000000446 fuel Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 8
- 230000009970 fire resistant effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000013102 re-test Methods 0.000 claims description 3
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 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
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- Molecular Biology (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to the technical field of cable testing, in particular to a fireproof cable testing system based on intelligent temperature detection, which comprises a conveying unit, a fixing unit, a testing unit, a temperature detecting unit, an image detecting unit and an analyzing unit, wherein profile information of a cable to be tested which is subjected to combustion detection is compared with initial profile information, when the contact ratio is smaller than or equal to a second preset contact ratio and larger than a first preset contact ratio, whether the fireproof performance of the cable to be tested meets the standard is judged according to the temperature in a protective shell measured by the temperature detecting unit, and the detection efficiency of the fireproof cable is effectively improved, and meanwhile the safety of the fireproof cable is further effectively improved.
Description
Technical Field
The invention relates to the technical field of cable testing, in particular to a fireproof cable testing system based on intelligent temperature detection.
Background
Currently, in order to ensure data security, it is desirable to have enough time to recycle all data back to the home after a fire before the entire network is paralyzed and to transfer them to a safe place to minimize the possibility of data loss. Thus, among the standards for cables, there is also a class of fire protection standards, known as "line integrity" standards. The purpose of the cable is that the cable can still keep the line smooth in a fire scene, so that the power supply and the information can still be normally transmitted. Cables meeting the series integrity requirements are also referred to as fire-resistant cables.
The fireproof cable needs to be subjected to strict fire resistance tests, and is tested by adopting an artificial fire burning mode, so that the fireproof cable is not scientific and strict, and unsafe, and special fireproof cable testing equipment is needed.
Chinese patent publication No.: CN116242959B discloses a fire-resistant testing device for cables, in particular to a fire-resistant testing device for producing fireproof electric wires and cables, which comprises a chassis, a testing frame body, a cover plate, side plates and flame ejectors, wherein the two sides of the top of the chassis are connected with the side plates, the testing frame body is connected between the side plates on the two sides, ventilation holes are uniformly arranged at intervals at the bottom of the testing frame body, the cover plate is rotationally connected on the testing frame body, and the flame ejectors are arranged on the testing frame body; it follows that the prior art has the following problems: the situation of the cable to be detected is not considered for detection, and the detection efficiency of the cable to be detected is affected.
Disclosure of Invention
Therefore, the invention provides a fireproof cable testing system based on intelligent temperature detection, which is used for solving the problem that the detection efficiency of a cable to be tested is affected because the situation of the cable to be tested is not considered in the prior art.
In order to achieve the above object, the present invention provides a fire-proof cable testing system based on temperature intelligent detection, comprising:
A conveying unit for conveying the cable to be tested;
The fixing unit is arranged at the output end of the conveying unit and used for receiving the cable to be tested output by the conveying unit and fixing the received cable to be tested;
The testing unit is used for performing combustion testing on the cable to be tested, and comprises a protective shell, a flame spray head and a fuel tank, wherein the protective shell is used for being installed in the fixing unit, the flame spray head is arranged in the protective shell, one side of the fixing unit is used for burning the cable to be tested, and the fuel tank is connected with the flame spray head and is used for providing fuel for the flame spray head; the flame spray head is arranged on the protective shell through a slide rail and used for changing the distance between the flame spray head and the cable to be tested;
A temperature detection unit, which is arranged in the protective shell and is used for detecting the temperature in the protective shell;
The image detection unit is arranged in the protective shell and positioned above the fixing unit and is used for periodically collecting image information of the cable to be tested;
The analysis unit is respectively connected with the fixing unit, the testing unit, the temperature detection unit and the image detection unit and is used for judging whether the fireproof performance of the cable to be tested meets the standard or not based on the received image information output by the image detection unit, and determining the reason why the fireproof performance of the cable to be tested does not meet the standard when judging that the fireproof performance of the cable to be tested does not meet the standard or carrying out secondary judgment on whether the fireproof performance of the cable to be tested meets the standard or not based on the temperature value measured by the temperature detection unit; the analysis unit is further configured to re-determine the operating parameters of the corresponding components in the test unit based on the determined reasons.
Further, the analysis unit is configured to collect profile information of the cable to be tested according to the acquired image information, and determine whether the fireproof performance of the cable to be tested meets a standard according to a contact ratio of the profile information and initial profile information obtained by the image detection unit when the fixing unit completes fixing of the cable to be tested, where the contact ratio is a ratio of a length of a contact profile between the profile information and the initial profile information to a total length of a profile of the initial profile information:
if the overlap ratio is larger than a second preset overlap ratio set in the analysis unit, the analysis unit judges that the fireproof performance of the cable to be tested meets the standard, and the test of the cable to be tested is completed;
If the contact ratio is smaller than or equal to the second preset contact ratio and larger than the first preset contact ratio set in the analysis unit, the analysis unit preliminarily judges that the fireproof performance of the cable to be tested does not meet the standard, and judges whether the fireproof performance of the cable to be tested meets the standard or not secondarily based on the temperature in the protective shell measured by the temperature detection unit;
And if the contact ratio is smaller than or equal to the first preset contact ratio, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard, and determines the reason that the fireproof performance of the cable to be tested does not meet the standard based on the difference value of the first preset contact ratio and the contact ratio.
Further, the analysis unit secondarily determines whether the fireproof performance of the cable to be tested meets the standard based on a comparison result of the actual temperature in the protective shell measured by the temperature detection unit and the preset temperature set in the analysis unit under the condition that the contact ratio is smaller than or equal to the second preset contact ratio and larger than the first preset contact ratio, wherein:
If the actual temperature is smaller than or equal to the preset temperature, the analysis unit secondarily judges that the test parameters of the cable to be tested do not meet the standard, and the analysis unit redetermines the distance between the flame spray head and the cable to be tested based on the difference value between the preset temperature and the actual temperature;
And if the actual temperature is greater than the preset temperature, the analysis unit secondarily judges that the fireproof performance of the cable to be tested meets the standard, and the test of the cable to be tested is completed.
Further, the analysis unit marks a difference between the preset temperature and the actual temperature as a temperature difference when the actual temperature is smaller than or equal to the preset temperature, and determines a distance between the flame spray head and the cable to be tested based on the temperature difference, wherein:
if the temperature difference value is smaller than or equal to a first preset temperature difference value set in the analysis module, the analysis unit uses a first preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
If the temperature difference is larger than the first preset temperature difference and smaller than or equal to a second preset temperature difference set in the analysis module, the analysis unit uses a second preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
If the temperature difference is larger than the second preset temperature difference, the analysis unit uses a third preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
And the analysis unit controls the testing unit to retest the cable to be tested after finishing the adjustment of the distance between the flame spray head and the cable to be tested.
Further, the analysis unit marks the difference between the first preset contact ratio and the contact ratio as a contact ratio difference under the condition that the contact ratio is smaller than or equal to the first preset contact ratio, and determines the reason that the fireproof performance of the cable to be tested does not meet the standard according to the contact ratio difference, wherein:
If the overlap ratio difference value is smaller than or equal to a first preset overlap ratio difference value set in the analysis unit, the analysis unit judges that the fire resistance of the cable to be tested does not meet the standard because the operation parameters of the flame spray head do not reach the test standard in the test process cause the deviation of the test result, and the analysis unit determines the flow rate of fuel output by the fuel tank based on the identification feature in the image information, wherein the identification feature is the area of the combustion part of the cable to be tested in the image information;
If the overlap ratio difference value is larger than the first preset overlap ratio difference value and smaller than or equal to a second preset overlap ratio difference value set in the analysis unit, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard because the operation parameters of the fixing unit in the test process do not reach the test standard to cause the deviation of the test result, and the analysis unit determines the fixing parameters of the fixing device for the cable to be tested based on the radian in the initial profile information;
And if the overlap ratio difference value is larger than the second preset overlap ratio difference value, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard because the surface material of the cable to be tested does not meet the fireproof standard, and the analysis unit sends out a notification that the cable to be tested is unqualified.
Further, the analysis unit is further configured to obtain the identification feature from the image information, and determine a flow rate adjustment mode for the fuel flow rate output by the fuel tank based on a ratio of the extracted feature area to a total area of the cable to be tested in the image information, where the analysis unit marks the obtained ratio as an identification feature area ratio:
If the area ratio of the identification feature is smaller than or equal to a first preset area ratio set in the analysis unit, the analysis unit uses a first preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of the fuel output by the fuel tank to a corresponding value;
If the identification characteristic area ratio is larger than the first preset area ratio and smaller than or equal to the first preset area ratio set in the analysis unit, the analysis unit uses a second preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of fuel output by the fuel tank to a corresponding value;
and if the identification characteristic area ratio is larger than the second preset area ratio, the analysis unit uses a third preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of the fuel output by the fuel tank to a corresponding value.
Further, the analysis unit compares the adjusted flow rate with a preset maximum flow rate under the condition that the flow rate of fuel output by the fuel tank is adjusted, and if the adjusted flow rate is larger than the preset maximum flow rate set in the analysis unit, the analysis unit controls the test unit to use the preset maximum flow rate as an operation parameter of the fuel tank, and adjusts the distance between the flame spray head and the cable to be tested to a corresponding value by using a first preset distance adjustment coefficient.
Further, the analysis unit acquires a curve characteristic in the initial profile information, acquires an radian of the curve characteristic, and determines an adjusting mode of the fastening device for the clamping degree of the cable to be tested according to the radian, wherein:
If the radian is smaller than or equal to a first preset radian set in the analysis unit, the analysis unit uses a first preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to a corresponding value for the cable to be tested;
If the radian is larger than the first preset radian and smaller than or equal to a second preset radian set in the analysis unit, the analysis unit uses a second preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to a corresponding value for the cable to be tested;
And if the radian is larger than the second preset radian, the analysis unit uses a third preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to the corresponding value for the cable to be tested.
Further, the fixing unit comprises a first fastening device and a second fastening device which are sequentially arranged at one side of the output end of the conveying unit and used for clamping the cable to be tested;
The second fastening device is connected with the fastening sliding rail, the fastening sliding rail is used for controlling the second fastening device to move in the direction away from the first fastening device under the condition that the second fastening device completes clamping of the cable to be tested, so that straightening of the cable to be tested is completed, and a driving motor is arranged on one side of the fastening sliding rail.
Compared with the prior art, the method has the beneficial effects that the profile information of the cable to be tested after combustion detection is compared with the initial profile information, so that when the cable to be tested deforms in a large area due to combustion, the corresponding fireproof performance of the cable to be tested is determined to be inconsistent with the standard reason in time; when the contact ratio is smaller than or equal to the second preset contact ratio and larger than the first preset contact ratio, the cable to be tested only deforms in a small area under the condition, the analysis unit cannot judge whether the fireproof performance of the cable to be tested meets the standard or not according to the contact ratio, and under the condition, the comprehensive judgment is carried out on whether the fireproof performance of the cable to be tested meets the standard or not according to the temperature in the protective shell measured by the temperature detection unit, so that the detection efficiency of the fireproof cable is effectively improved, and meanwhile the safety of the fireproof cable is further effectively improved.
Further, when the actual temperature is greater than the preset temperature, the cable to be tested is fully combusted under the condition, and the fireproof performance of the cable to be tested is judged to meet the standard; when the actual temperature is smaller than or equal to the preset temperature, the flame nozzle is too close to the cable to be tested under the condition, so that the flame nozzle cannot burn the cable to be tested sufficiently by using the flame core, and the burning temperature cannot reach the preset standard, at the moment, the testing parameters of the cable to be tested are not in accordance with the standard, the distance between the flame nozzle and the cable to be tested is increased, the flame nozzle is ensured to burn the cable to be tested sufficiently, and meanwhile, the accuracy of detecting the fireproof cable is further improved.
Further, the reason that the fireproof performance of the cable to be tested does not meet the preset standard is determined according to the deviation condition of the contact ratio and the first preset contact ratio so as to determine the corresponding processing mode, when the contact ratio difference value is smaller than or equal to the first preset contact ratio difference value, the cable to be tested after combustion detection does not deform in a large area, under the condition, the flame nozzle cannot fully burn the cable to be tested due to insufficient combustion strength of the flame nozzle to the cable to be tested, at the moment, the flow speed of fuel output by the fuel output tank is increased, and when the testing unit fully burns the cable to be tested, the detection efficiency of the fireproof cable is further improved. When the overlap ratio difference value is larger than the first preset overlap ratio difference value and smaller than or equal to the second preset overlap ratio difference value, the difference exists between the outline information of the cable to be tested and the initial outline information in the image information, and the fact that the cable to be tested cannot be kept still in the combustion process due to too low clamping force of the fastening devices is considered, the clamping force of each fastening device is adjusted to be high at the moment, the image information of the cable to be tested is ensured to be accurately acquired, the reliable reference is provided for judging the fireproof performance of the cable to be tested, and meanwhile the detection accuracy of the cable to be tested is effectively improved. When the overlap ratio difference value is larger than the second preset overlap ratio difference value, the analysis unit judges that the fire resistance of the cable to be tested does not meet the standard because the surface material of the cable to be tested does not meet the fire resistance standard. The detection condition of the fireproof cable is accurately divided to determine the corresponding processing mode according to the specific condition, so that the detection efficiency of the fireproof cable is further improved.
Drawings
FIG. 1 is a block diagram of a fire-resistant cable testing system based on intelligent temperature detection in accordance with an embodiment of the present invention;
FIG. 2 is a flowchart of an analysis unit according to an embodiment of the present invention for determining whether the fireproof performance of a cable under test meets a standard according to the overlap ratio;
fig. 3 is a flowchart of the analysis unit according to the embodiment of the present invention for determining whether the fire resistance of the cable to be tested meets the standard based on the actual temperature.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, fig. 2, and fig. 3, the block diagrams of the fireproof cable testing system based on intelligent temperature detection according to the embodiments of the present invention, a flowchart for determining whether the fireproof performance of the cable to be tested meets the standard according to the overlap ratio by the analysis unit, and a flowchart for determining whether the fireproof performance of the cable to be tested meets the standard according to the actual temperature by the analysis unit are shown respectively; the embodiment of the invention provides a fireproof cable testing system based on intelligent temperature detection, which comprises the following components:
A conveying unit for conveying the cable to be tested;
The fixing unit is arranged at the output end of the conveying unit and used for receiving the cable to be tested output by the conveying unit and fixing the received cable to be tested;
The testing unit is used for performing combustion testing on the cable to be tested, and comprises a protective shell, a flame spray head and a fuel tank, wherein the protective shell is used for being installed in the fixing unit, the flame spray head is arranged in the protective shell, one side of the fixing unit is used for burning the cable to be tested, and the fuel tank is connected with the flame spray head and is used for providing fuel for the flame spray head; the flame spray head is arranged on the protective shell through a slide rail and used for changing the distance between the flame spray head and the cable to be tested;
A temperature detection unit, which is arranged in the protective shell and is used for detecting the temperature in the protective shell;
The image detection unit is arranged in the protective shell and positioned above the fixing unit and is used for periodically collecting image information of the cable to be tested;
The analysis unit is respectively connected with the fixing unit, the testing unit, the temperature detection unit and the image detection unit and is used for judging whether the fireproof performance of the cable to be tested meets the standard or not based on the received image information output by the image detection unit, and determining the reason why the fireproof performance of the cable to be tested does not meet the standard when judging that the fireproof performance of the cable to be tested does not meet the standard or carrying out secondary judgment on whether the fireproof performance of the cable to be tested meets the standard or not based on the temperature value measured by the temperature detection unit; the analysis unit is further configured to re-determine the operating parameters of the corresponding components in the test unit based on the determined reasons.
The fuel tank contains oxygen for supporting combustion.
Specifically, the analysis unit is configured to collect profile information of the cable to be tested according to the acquired image information, and determine whether the fireproof performance of the cable to be tested meets a standard according to a contact ratio of the profile information and initial profile information obtained by the image detection unit when the fixing unit completes fixing of the cable to be tested, where the contact ratio is a ratio of a length of a contact profile between the profile information and the initial profile information to a total length of a profile of the initial profile information:
if the overlap ratio is larger than a second preset overlap ratio set in the analysis unit, the analysis unit judges that the fireproof performance of the cable to be tested meets the standard, and the test of the cable to be tested is completed;
If the contact ratio is smaller than or equal to the second preset contact ratio and larger than the first preset contact ratio set in the analysis unit, the analysis unit preliminarily judges that the fireproof performance of the cable to be tested does not meet the standard, and judges whether the fireproof performance of the cable to be tested meets the standard or not secondarily based on the temperature in the protective shell measured by the temperature detection unit;
And if the contact ratio is smaller than or equal to the first preset contact ratio, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard, and determines the reason that the fireproof performance of the cable to be tested does not meet the standard based on the difference value of the first preset contact ratio and the contact ratio.
The first preset overlap ratio is set to be 0.965, and the second preset overlap ratio is set to be 0.99.
Comparing the profile information of the cable to be tested after the combustion detection with the initial profile information to timely determine that the fireproof performance of the corresponding cable to be tested does not meet the standard reason when the cable to be tested deforms in a large area due to the combustion; when the contact ratio is smaller than or equal to the second preset contact ratio and larger than the first preset contact ratio, the cable to be tested only deforms in a small area under the condition, the analysis unit cannot judge whether the fireproof performance of the cable to be tested meets the standard or not according to the contact ratio, and under the condition, the comprehensive judgment is carried out on whether the fireproof performance of the cable to be tested meets the standard or not according to the temperature in the protective shell measured by the temperature detection unit, so that the detection efficiency of the fireproof cable is effectively improved, and meanwhile the safety of the fireproof cable is further effectively improved.
Specifically, the analysis unit secondarily determines whether the fireproof performance of the cable to be tested meets the standard based on the comparison result of the actual temperature in the protective shell measured by the temperature detection unit and the preset temperature set in the analysis unit under the condition that the contact ratio is smaller than or equal to the second preset contact ratio and larger than the first preset contact ratio, wherein:
If the actual temperature is smaller than or equal to the preset temperature, the analysis unit secondarily judges that the test parameters of the cable to be tested do not meet the standard, and the analysis unit redetermines the distance between the flame spray head and the cable to be tested based on the difference value between the preset temperature and the actual temperature;
And if the actual temperature is greater than the preset temperature, the analysis unit secondarily judges that the fireproof performance of the cable to be tested meets the standard, and the test of the cable to be tested is completed.
The preset temperature was set to 667 ℃.
When the actual temperature is higher than the preset temperature, the cable to be tested is fully combusted under the condition, and the fireproof performance of the cable to be tested is judged to accord with the standard; when the actual temperature is smaller than or equal to the preset temperature, the flame nozzle is too close to the cable to be tested under the condition, so that the flame nozzle cannot burn the cable to be tested sufficiently by using the flame core, and the burning temperature cannot reach the preset standard, at the moment, the testing parameters of the cable to be tested are not in accordance with the standard, the distance between the flame nozzle and the cable to be tested is increased, the flame nozzle is ensured to burn the cable to be tested sufficiently, and meanwhile, the accuracy of detecting the fireproof cable is further improved.
Specifically, the analysis unit marks a difference between the preset temperature and the actual temperature as a temperature difference when the actual temperature is smaller than or equal to the preset temperature, and determines a distance between the flame spray head and the cable to be tested based on the temperature difference, wherein:
if the temperature difference value is smaller than or equal to a first preset temperature difference value set in the analysis module, the analysis unit uses a first preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
If the temperature difference is larger than the first preset temperature difference and smaller than or equal to a second preset temperature difference set in the analysis module, the analysis unit uses a second preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
If the temperature difference is larger than the second preset temperature difference, the analysis unit uses a third preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
And the analysis unit controls the testing unit to retest the cable to be tested after finishing the adjustment of the distance between the flame spray head and the cable to be tested.
And setting L '=L×αi, wherein L' is the adjusted distance, L is the initial distance between the flame spray head and the cable to be tested, and αi is the i-th preset adjusting coefficient, i=1, 2 and 3.
The first preset temperature difference is set to 17 ℃, the second preset temperature difference is set to 45 ℃, the first preset distance adjustment coefficient is set to 1.11, the second preset distance adjustment coefficient is set to 1.19, and the third preset distance adjustment coefficient is set to 1.28.
Specifically, the analysis unit marks the difference between the first preset contact ratio and the contact ratio as a contact ratio difference under the condition that the contact ratio is smaller than or equal to the first preset contact ratio, and determines the reason that the fireproof performance of the cable to be tested does not meet the standard according to the contact ratio difference, wherein:
If the overlap ratio difference value is smaller than or equal to a first preset overlap ratio difference value set in the analysis unit, the analysis unit judges that the fire resistance of the cable to be tested does not meet the standard because the operation parameters of the flame spray head do not reach the test standard in the test process cause the deviation of the test result, and the analysis unit determines the flow rate of fuel output by the fuel tank based on the identification feature in the image information, wherein the identification feature is the area of the combustion part of the cable to be tested in the image information;
If the overlap ratio difference value is larger than the first preset overlap ratio difference value and smaller than or equal to a second preset overlap ratio difference value set in the analysis unit, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard because the operation parameters of the fixing unit in the test process do not reach the test standard to cause the deviation of the test result, and the analysis unit determines the fixing parameters of the fixing device for the cable to be tested based on the radian in the initial profile information;
And if the overlap ratio difference value is larger than the second preset overlap ratio difference value, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard because the surface material of the cable to be tested does not meet the fireproof standard, and the analysis unit sends out a notification that the cable to be tested is unqualified.
The method comprises the steps of determining the reason that the fireproof performance of a cable to be tested does not meet a preset standard according to the deviation condition of the contact ratio and the first preset contact ratio, determining a corresponding processing mode, and when the contact ratio difference is smaller than or equal to the first preset contact ratio difference, the cable to be tested after combustion detection does not have large-area deformation under the condition, and under the condition, the cable to be tested cannot be fully combusted due to insufficient combustion strength of a flame nozzle to the cable to be tested, and at the moment, the flow speed of fuel output by a fuel output tank is increased, so that the testing unit is ensured to fully combust the cable to be tested, and meanwhile, the detection efficiency of the fireproof cable is further improved. When the overlap ratio difference value is larger than the first preset overlap ratio difference value and smaller than or equal to the second preset overlap ratio difference value, the difference exists between the outline information of the cable to be tested and the initial outline information in the image information, and the fact that the cable to be tested cannot be kept still in the combustion process due to too low clamping force of the fastening devices is considered, the clamping force of each fastening device is adjusted to be high at the moment, the image information of the cable to be tested is ensured to be accurately acquired, the reliable reference is provided for judging the fireproof performance of the cable to be tested, and meanwhile the detection accuracy of the cable to be tested is effectively improved. When the overlap ratio difference value is larger than the second preset overlap ratio difference value, the analysis unit judges that the fire resistance of the cable to be tested does not meet the standard because the surface material of the cable to be tested does not meet the fire resistance standard. The detection condition of the fireproof cable is accurately divided to determine the corresponding processing mode according to the specific condition, so that the detection efficiency of the fireproof cable is further improved.
The first preset overlap ratio difference value is set to be 0.13, and the second preset overlap ratio difference value is set to be 0.45.
Specifically, the analysis unit is further configured to obtain the identification feature from the image information, and determine a flow rate adjustment mode for the fuel flow rate output by the fuel tank based on a ratio of the extracted feature area to a total area of the cable to be tested in the image information, where the analysis unit marks the obtained ratio as an identification feature area ratio:
If the area ratio of the identification feature is smaller than or equal to a first preset area ratio set in the analysis unit, the analysis unit uses a first preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of the fuel output by the fuel tank to a corresponding value;
If the identification characteristic area ratio is larger than the first preset area ratio and smaller than or equal to the first preset area ratio set in the analysis unit, the analysis unit uses a second preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of fuel output by the fuel tank to a corresponding value;
and if the identification characteristic area ratio is larger than the second preset area ratio, the analysis unit uses a third preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of the fuel output by the fuel tank to a corresponding value.
Setting V '=v×rf, where V' is the flow rate after adjustment, V is the flow rate of fuel output from the fuel tank, rf is the f preset flow rate adjustment coefficient, and f=1, 2,3.
The first preset area ratio is set to be 0.82, the second preset area ratio is set to be 0.764, the first preset flow rate adjustment coefficient is set to be 1.27, the second preset flow rate adjustment coefficient is set to be 1.22, and the third preset flow rate adjustment coefficient is set to be 1.12.
Specifically, the analysis unit compares the regulated flow rate with a preset maximum flow rate under the condition that the regulation of the flow rate of fuel output by the fuel tank is completed, and if the regulated flow rate is larger than the preset maximum flow rate set in the analysis unit, the analysis unit controls the test unit to use the preset maximum flow rate as an operation parameter of the fuel tank, and uses a first preset distance regulation coefficient to regulate the distance between the flame spray head and the cable to be tested to a corresponding value.
Specifically, the analysis unit acquires a curve characteristic in the initial profile information, acquires the radian of the curve characteristic, and determines an adjusting mode of the fastening device for the clamping degree of the cable to be tested according to the radian, wherein:
If the radian is smaller than or equal to a first preset radian set in the analysis unit, the analysis unit uses a first preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to a corresponding value for the cable to be tested;
If the radian is larger than the first preset radian and smaller than or equal to a second preset radian set in the analysis unit, the analysis unit uses a second preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to a corresponding value for the cable to be tested;
And if the radian is larger than the second preset radian, the analysis unit uses a third preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to the corresponding value for the cable to be tested.
Setting, N '=n×βj, where N' is the adjusted clamping degree, N is the initial clamping degree of the fastening device for the cable to be tested, βj is a j-th preset clamping degree adjustment coefficient, and j=1, 2,3.
The first preset radian is set to be 32 degrees, the second preset radian is set to be 47 degrees, the first preset clamping degree adjusting coefficient is set to be 1.29, the second preset clamping degree adjusting coefficient is set to be 1.23, and the third preset clamping degree adjusting coefficient is set to be 1.12.
Specifically, the fixing unit comprises a first fastening device and a second fastening device which are sequentially arranged at one side of the output end of the conveying unit and used for clamping the cable to be tested;
The second fastening device is connected with the fastening sliding rail, the fastening sliding rail is used for controlling the second fastening device to move in the direction away from the first fastening device under the condition that the second fastening device completes clamping of the cable to be tested, so that straightening of the cable to be tested is completed, and a driving motor is arranged on one side of the fastening sliding rail.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Fireproof cable test system based on temperature intellectual detection system, characterized by comprising:
A conveying unit for conveying the cable to be tested;
The fixing unit is arranged at the output end of the conveying unit and used for receiving the cable to be tested output by the conveying unit and fixing the received cable to be tested;
The testing unit is used for performing combustion testing on the cable to be tested, and comprises a protective shell, a flame spray head and a fuel tank, wherein the protective shell is used for being installed in the fixing unit, the flame spray head is arranged in the protective shell, one side of the fixing unit is used for burning the cable to be tested, and the fuel tank is connected with the flame spray head and is used for providing fuel for the flame spray head; the flame spray head is arranged on the protective shell through a slide rail and used for changing the distance between the flame spray head and the cable to be tested;
A temperature detection unit, which is arranged in the protective shell and is used for detecting the temperature in the protective shell;
The image detection unit is arranged in the protective shell and positioned above the fixing unit and is used for periodically collecting image information of the cable to be tested;
The analysis unit is respectively connected with the fixing unit, the testing unit, the temperature detection unit and the image detection unit and is used for judging whether the fireproof performance of the cable to be tested meets the standard or not based on the received image information output by the image detection unit, and determining the reason why the fireproof performance of the cable to be tested does not meet the standard when judging that the fireproof performance of the cable to be tested does not meet the standard or carrying out secondary judgment on whether the fireproof performance of the cable to be tested meets the standard or not based on the temperature value measured by the temperature detection unit; the analysis unit is further configured to re-determine the operating parameters of the corresponding components in the test unit based on the determined reasons.
2. The fire-proof cable testing system based on intelligent temperature detection according to claim 1, wherein the analysis unit is configured to collect profile information of the cable to be tested according to the acquired image information, and determine whether fire-proof performance of the cable to be tested meets a standard according to a contact ratio between the profile information and initial profile information obtained by the image detection unit and initial profile information when the fixing unit completes fixing the cable to be tested, where the contact ratio is a ratio of a length of a contact profile between the profile information and initial profile information to a total length of a profile of the initial profile information:
if the overlap ratio is larger than a second preset overlap ratio set in the analysis unit, the analysis unit judges that the fireproof performance of the cable to be tested meets the standard, and the test of the cable to be tested is completed;
If the contact ratio is smaller than or equal to the second preset contact ratio and larger than the first preset contact ratio set in the analysis unit, the analysis unit preliminarily judges that the fireproof performance of the cable to be tested does not meet the standard, and judges whether the fireproof performance of the cable to be tested meets the standard or not secondarily based on the temperature in the protective shell measured by the temperature detection unit;
And if the contact ratio is smaller than or equal to the first preset contact ratio, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard, and determines the reason that the fireproof performance of the cable to be tested does not meet the standard based on the difference value of the first preset contact ratio and the contact ratio.
3. The fire-proof cable testing system based on temperature intelligent detection according to claim 2, wherein the analysis unit secondarily determines whether the fire-proof performance of the cable under test meets a standard based on a comparison result of the actual temperature in the protective housing measured by the temperature detection unit and a preset temperature set in the analysis unit when the contact ratio is equal to or less than the second preset contact ratio and is greater than the first preset contact ratio, wherein:
If the actual temperature is smaller than or equal to the preset temperature, the analysis unit secondarily judges that the test parameters of the cable to be tested do not meet the standard, and the analysis unit redetermines the distance between the flame spray head and the cable to be tested based on the difference value between the preset temperature and the actual temperature;
And if the actual temperature is greater than the preset temperature, the analysis unit secondarily judges that the fireproof performance of the cable to be tested meets the standard, and the test of the cable to be tested is completed.
4. The fire protection cable testing system based on intelligent temperature detection according to claim 3, wherein the analysis unit marks a difference between the preset temperature and the actual temperature as a temperature difference when the actual temperature is less than or equal to the preset temperature, and determines a distance between the flame spray head and the cable to be tested based on the temperature difference, wherein:
if the temperature difference value is smaller than or equal to a first preset temperature difference value set in the analysis module, the analysis unit uses a first preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
If the temperature difference is larger than the first preset temperature difference and smaller than or equal to a second preset temperature difference set in the analysis module, the analysis unit uses a second preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
If the temperature difference is larger than the second preset temperature difference, the analysis unit uses a third preset distance adjustment coefficient set by the analysis unit to adjust the distance between the flame spray head and the cable to be tested to a corresponding value;
And the analysis unit controls the testing unit to retest the cable to be tested after finishing the adjustment of the distance between the flame spray head and the cable to be tested.
5. The fire-resistant cable testing system based on intelligent temperature detection according to claim 4, wherein the analysis unit marks the difference between the first preset overlap ratio and the overlap ratio as an overlap ratio difference when the overlap ratio is smaller than or equal to the first preset overlap ratio, and determines the reason why the fire-resistant performance of the cable to be tested does not meet the standard according to the overlap ratio difference, wherein:
If the overlap ratio difference value is smaller than or equal to a first preset overlap ratio difference value set in the analysis unit, the analysis unit judges that the fire resistance of the cable to be tested does not meet the standard because the operation parameters of the flame spray head do not reach the test standard in the test process cause the deviation of the test result, and the analysis unit determines the flow rate of fuel output by the fuel tank based on the identification feature in the image information, wherein the identification feature is the area of the combustion part of the cable to be tested in the image information;
If the overlap ratio difference value is larger than the first preset overlap ratio difference value and smaller than or equal to a second preset overlap ratio difference value set in the analysis unit, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard because the operation parameters of the fixing unit in the test process do not reach the test standard to cause the deviation of the test result, and the analysis unit determines the fixing parameters of the fixing device for the cable to be tested based on the radian in the initial profile information;
And if the overlap ratio difference value is larger than the second preset overlap ratio difference value, the analysis unit judges that the fireproof performance of the cable to be tested does not meet the standard because the surface material of the cable to be tested does not meet the fireproof standard, and the analysis unit sends out a notification that the cable to be tested is unqualified.
6. The fire protection cable testing system based on intelligent temperature detection according to claim 5, wherein the analysis unit is further configured to obtain the identification feature from the image information, and determine a flow rate adjustment mode for the fuel flow rate output by the fuel tank based on a ratio of an extracted feature area to a total area of the cable to be tested in the image information, wherein the analysis unit marks the obtained ratio as an identification feature area ratio:
If the area ratio of the identification feature is smaller than or equal to a first preset area ratio set in the analysis unit, the analysis unit uses a first preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of the fuel output by the fuel tank to a corresponding value;
If the identification characteristic area ratio is larger than the first preset area ratio and smaller than or equal to the first preset area ratio set in the analysis unit, the analysis unit uses a second preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of fuel output by the fuel tank to a corresponding value;
and if the identification characteristic area ratio is larger than the second preset area ratio, the analysis unit uses a third preset flow rate adjustment coefficient set by the analysis unit to adjust the flow rate of the fuel output by the fuel tank to a corresponding value.
7. The fire protection cable testing system based on intelligent temperature detection according to claim 6, wherein the analysis unit compares the adjusted flow rate with a preset maximum flow rate under the condition that the adjustment of the flow rate of fuel output by the fuel tank is completed, and if the adjusted flow rate is greater than the preset maximum flow rate set in the analysis unit, the analysis unit controls the testing unit to use the preset maximum flow rate as an operation parameter of the fuel tank, and adjusts the distance between the flame spray head and the cable to be tested to a corresponding value by using a first preset distance adjustment coefficient.
8. The fire protection cable testing system based on intelligent temperature detection according to claim 7, wherein the analysis unit obtains curve characteristics in the initial profile information, obtains radian of the curve characteristics, and determines an adjustment mode of the clamping degree of the fastening device to the cable to be tested according to the radian, wherein:
If the radian is smaller than or equal to a first preset radian set in the analysis unit, the analysis unit uses a first preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to a corresponding value for the cable to be tested;
If the radian is larger than the first preset radian and smaller than or equal to a second preset radian set in the analysis unit, the analysis unit uses a second preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to a corresponding value for the cable to be tested;
And if the radian is larger than the second preset radian, the analysis unit uses a third preset clamping degree adjusting coefficient set by the analysis unit to adjust the clamping degree of the fastening device to the corresponding value for the cable to be tested.
9. The fire-proof cable testing system based on intelligent temperature detection according to claim 8, wherein the fixing unit comprises a first fastening device and a second fastening device which are sequentially arranged at one side of the output end of the conveying unit and used for clamping the cable to be tested;
The second fastening device is connected with the fastening sliding rail, the fastening sliding rail is used for controlling the second fastening device to move in the direction away from the first fastening device under the condition that the second fastening device completes clamping of the cable to be tested, so that straightening of the cable to be tested is completed, and a driving motor is arranged on one side of the fastening sliding rail.
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