CN117593856A - Intelligent temperature control early warning protection system for pipeline electric tracing band - Google Patents
Intelligent temperature control early warning protection system for pipeline electric tracing band Download PDFInfo
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- CN117593856A CN117593856A CN202311673287.XA CN202311673287A CN117593856A CN 117593856 A CN117593856 A CN 117593856A CN 202311673287 A CN202311673287 A CN 202311673287A CN 117593856 A CN117593856 A CN 117593856A
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- 238000004458 analytical method Methods 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 claims description 22
- 230000002159 abnormal effect Effects 0.000 claims description 21
- 239000011241 protective layer Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 238000007689 inspection Methods 0.000 abstract description 6
- 230000005856 abnormality Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/35—Ohmic-resistance heating
- F16L53/38—Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to the field of pipeline electric tracing bands, and is used for solving the problem that an effective early warning protection system is insufficient in a tracing band so as to have the potential safety hazard of overheat fire, in particular to an intelligent temperature control early warning protection system of the pipeline electric tracing band; according to the method, the operation condition of the electric tracing band is analyzed, the operation control of the electric tracing band is realized, the comprehensive analysis is carried out according to the single operation condition of the electric tracing band and the operation difference condition of all the electric tracing bands in the area, the safe operation of the single electric tracing band can be controlled, the operation conditions of a plurality of electric tracing bands in the area can be comprehensively managed, manual inspection is not needed in the operation process of the electric tracing band, safety accidents caused by the abnormality of the electric tracing band are avoided, and the damage and the overhigh humidity condition existing in the operation process of the electric tracing band can be timely found through the analysis of the humidity data and the protection data of the electric tracing band.
Description
Technical Field
The invention relates to the field of pipeline electric tracing bands, in particular to an intelligent temperature control early warning protection system of a pipeline electric tracing band.
Background
The pipeline electric tracing band has wide application range and is mainly used in various industrial devices such as water supply and drainage, sewage treatment, industrial air conditioning pipelines, fire control pipelines, natural gas, electric power and the like; in cold winter, the water or other liquid medium in the pipeline is frozen and solidified due to the fact that the temperature is too low, and if a heat preservation facility or a heat tracing device is not provided, normal circulation of the medium is hindered, and normal production is affected; along with the continuous development of electric tracing technology, an electric tracing band is an ideal choice for industrial pipeline freezing prevention and heat preservation, and is composed of a conductive polymer, two parallel metal wires and an insulating sheath; the conductive polymer has very high positive temperature coefficient characteristic, is mutually connected in parallel, can be arbitrarily shortened or lengthened in a certain range for use, and allows multiple cross overlapping;
at present, in the use process of the electric tracing band for the pipeline in the prior art, an effective early warning protection system is lacked, the electric tracing band for the pipeline runs abnormally due to corrosion or aging of an outer layer in the long-term use process, the existing electric tracing band is generally maintained and checked in a manual inspection mode, the position of the electric tracing band is hidden, the inspection efficiency is low, the effect is poor, and therefore potential safety hazards of overheat and fire are caused in the electric tracing band, and the electric tracing band is not beneficial to use;
aiming at the technical problems, the application provides a solution.
Disclosure of Invention
According to the intelligent temperature control early warning protection system for the pipeline electric tracing band, the operation condition of the electric tracing band is analyzed, the operation control of the electric tracing band is realized, the comprehensive analysis is carried out according to the single operation condition of the electric tracing band and the operation difference condition of all electric tracing bands in an area, the safe operation of the single electric tracing band can be controlled, the operation conditions of a plurality of electric tracing bands in the area can be comprehensively managed, manual inspection is not needed in the operation process of the electric tracing band, safety accidents caused by abnormal electric tracing bands are avoided, the conditions of damage and excessive humidity existing in the operation process of the electric tracing band can be timely found through the analysis of the humidity data and the protection data of the electric tracing band, the problem that an effective early warning protection system is insufficient in the electric tracing band, and therefore the potential safety hazard of overheat fire is caused is solved.
The aim of the invention can be achieved by the following technical scheme:
the intelligent temperature control early warning protection system for the electric tracing band of the pipeline comprises a temperature detection unit, an in-band temperature analysis unit, a multi-band temperature analysis unit, a humidity difference detection unit, an intrusion protection unit and an early warning control unit, wherein the temperature detection unit can detect operation data of the electric tracing band and respectively send the operation data of the electric tracing band to the in-band temperature analysis unit and the multi-band temperature analysis unit;
the same-band temperature analysis unit acquires and analyzes the operation data of a single group of electric tracing bands, generates an electric tracing band single operation signal, and sends the electric tracing band single operation signal to the early warning control unit;
the multi-band temperature analysis unit performs parallel analysis through operation data of a plurality of groups of electric tracing bands, generates an electric tracing band region operation signal, and sends the electric tracing band region operation signal to the early warning control unit;
the humidity difference detection unit can detect the humidity inside and outside the electric tracing band operation environment, generate a humidity normal signal or a humidity abnormal signal according to the detection result, and send the humidity normal signal or the humidity abnormal signal to the early warning control unit;
the intrusion protection unit can detect the protective layer of the electric tracing band, generate an electric tracing band protection complete signal or an electric tracing band protection damage signal, and send the electric tracing band protection complete signal or the electric tracing band protection damage signal to the early warning control unit;
after the early warning control unit obtains the single operation signal of the electric heat tracing band and the regional operation signal of the electric heat tracing band, the single operation signal of the electric heat tracing band and the regional operation signal of the electric heat tracing band are combined, corresponding early warning signals are generated, and the early warning control unit performs combined analysis on the normal humidity signals, the abnormal humidity signals and the protection damage signals of the electric heat tracing band to generate intrusion early warning signals.
In a preferred embodiment of the present invention, when detecting operation data of an electric tracing band, the temperature detecting unit collects a plurality of areas in the electric tracing band through the set temperature sensor, the collected plurality of areas are distributed in a starting end, an ending end, a connecting point and a middle section of the electric tracing band, the temperature detecting unit collects a plurality of groups of electric tracing bands, records the temperature of each collected group of electric tracing bands as a group of data, records the temperature of the starting end of the electric tracing band in the group of data as a starting temperature, records the temperature of the ending end of the electric tracing band as an end temperature, records the temperature of the connecting point of the electric tracing band as a relay point temperature, records the temperature of the middle section of the electric tracing band as a middle temperature, and records all the data as operation data.
As a preferred embodiment of the present invention, the in-band temperature analysis unit selects a set of data from the operation data, calculates a difference between a start temperature and an end temperature, records the difference as an end temperature difference T, records a difference between a relay point temperature and a middle temperature as a middle temperature difference T, generates an electric tracing band temperature difference characteristic value R through formula analysis,wherein q is a preset weight coefficient;
the same-band temperature analysis unit respectively monitors the starting point temperature, the end point temperature, the relay point temperature and the middle temperature continuously, collects the temperatures at fixed intervals, calculates the temperature difference between the two collection, thereby obtaining the starting point temperature rise a1, the end point temperature rise a2, the relay point temperature rise a3 and the middle temperature rise a3, calculates the temperature allowance Y according to a formula,wherein k is a preset weight coefficient, and M0 is a preset temperature margin initial value.
As a preferred embodiment of the present invention, the in-band temperature analysis unit calculates the difference between the starting point temperature, the ending point temperature, the relay point temperature and the middle temperature and the preset upper temperature limit, compares the obtained temperature difference with the temperature allowance, generates a temperature excessive signal if the temperature difference is smaller than the temperature allowance, and generates a temperature normal signal if the temperature difference is greater than or equal to the temperature allowance.
As a preferred embodiment of the invention, the multi-band temperature analysis unit obtains the operation data of n electric tracing bands, and compares the starting point temperature, the end point temperature, the relay point temperature and the middle temperature of the n electric tracing bands in parallel, and the operation data is obtained by a variance formulaCalculating a variance S1 of the starting temperature, a variance S2 of the end temperature, a variance S3 of the relay point temperature and a variance S4 of the middle temperature, wherein S is in a variance formula 2 The variance, n is the number of samples, X is a variable, and X corresponds to the starting point temperature, the end point temperature, the relay point temperature and the middle temperature respectively;
the multi-band temperature analysis unit sums the variance S1 of the starting point temperature, the variance S2 of the end point temperature and the variance S3 of the relay point temperature, the variance S4 of the middle temperature to obtain a total variance S0, meanwhile sums the starting point temperature, the end point temperature, the relay point temperature and the middle temperature to obtain a total temperature, divides the total variance S0 by the total temperature to obtain a deviation ratio, the multi-band temperature analysis unit compares the deviation ratio with a preset ratio threshold, if the deviation ratio is larger than the preset ratio threshold, a temperature instability signal is generated, and if the deviation ratio is smaller than the preset ratio threshold, a temperature stability signal is generated.
As a preferred embodiment of the invention, the humidity difference detecting unit detects the humidity outside the electric tracing band, records the detected humidity as the external humidity, detects the temperature inside the electric tracing band as the internal humidity, compares the internal humidity with a preset working humidity upper limit, generates a humidity normal signal if the internal humidity is smaller than the preset working humidity upper limit, calculates the difference between the internal humidity and the external humidity if the internal humidity is larger than the preset working humidity upper limit, records the calculated difference as a humidity difference, compares the humidity difference with a preset difference threshold, generates a humidity leakage signal if the humidity difference is smaller than the preset difference threshold, and generates a humidity abnormal signal if the humidity difference is larger than the preset difference threshold.
As a preferred implementation mode of the invention, after the early warning control unit obtains the temperature stabilizing signal, the number ratio of the electric tracing bands generating the temperature overhigh signal and the temperature normal signal in the area is calculated, if the ratio is smaller than a preset ratio, no reaction is performed, and if the ratio is larger than or equal to the preset ratio, the abnormal early warning of the area is generated;
after the early warning control unit acquires the temperature over-high signal, generating high-temperature early warning;
the early warning control unit generates an intrusion early warning signal after acquiring a humidity leakage signal and an electric tracing band protection breakage signal;
and when the early warning control unit acquires any one of the humidity leakage signal and the humidity abnormal signal, an excessive humidity alarm is generated.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, when the electric tracing band operates, the operation condition of the electric tracing band is analyzed, and the operation control of the electric tracing band is realized, so that the heating condition of the electric tracing band can be obtained in real time without manual inspection in the operation process of the electric tracing band, and the heating condition can be timely processed when the heating is abnormal, and the safety accident caused by the abnormal electric tracing band is avoided.
2. In the invention, when the electric tracing band is detected, comprehensive analysis is carried out according to the single operation condition of the electric tracing band and the operation difference conditions of all the electric tracing bands in the area, so that the safe operation of the single electric tracing band can be controlled, and the operation conditions of a plurality of electric tracing bands in the area can be comprehensively managed, thereby realizing unified management of the operation condition, the whole quality and the service life of the electric tracing band.
3. According to the invention, through analyzing the humidity data and the protection data of the electric tracing band, the damage and the too high humidity condition existing in the operation process of the electric tracing band can be timely found, and meanwhile, whether the humidity abnormality is caused by damage can be judged through the combination analysis of the humidity and the damage condition, so that the maintenance and the overhaul of management personnel are facilitated.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a system block diagram of the present invention;
fig. 2 is a flow chart of the system of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1-2, an intelligent temperature control early warning protection system for a pipeline electric tracing band comprises a temperature detection unit, a same-band temperature analysis unit, a multi-band temperature analysis unit, a humidity difference detection unit, an intrusion protection unit and an early warning control unit, wherein the temperature detection unit can detect operation data of the electric tracing band and respectively send the operation data of the electric tracing band to the same-band temperature analysis unit and the multi-band temperature analysis unit, when the temperature detection unit detects the operation data of the electric tracing band, a plurality of areas in the electric tracing band are collected through a set temperature sensor, the collected areas are distributed in a starting end, an ending end, a connecting point and a middle section of the electric tracing band, the temperature detection unit collects a plurality of groups of electric tracing bands, records the temperature of the collected starting end of the electric tracing band as a group of data, records the temperature of the starting end of the electric tracing band as an end temperature of the electric tracing band, records the temperature of the electric tracing band at the connecting point as an end point, records the temperature of the electric tracing band as a middle section, and records the temperature of all electric tracing band as the middle section of the operation data;
the same-band temperature analysis unit obtains the operation data of a single group of electric tracing bands for analysis, selects a group of data from the operation data, calculates the difference value between the starting point temperature and the end point temperature, records the difference value as the end point temperature difference T, records the difference value between the relay point temperature and the middle temperature as the middle temperature difference T, the same-band temperature analysis unit generates the electric tracing band temperature difference characteristic value R through formula analysis,wherein q is a preset weight coefficient;
the same-band temperature analysis unit respectively monitors the starting point temperature, the end point temperature, the relay point temperature and the middle temperature continuously, collects the temperatures at fixed intervals, calculates the temperature difference between the two collection, thereby obtaining the starting point temperature rise a1, the end point temperature rise a2, the relay point temperature rise a3 and the middle temperature rise a3, calculates the temperature allowance Y according to a formula,and k is a preset weight coefficient, M0 is a preset temperature allowance initial value, the same-band temperature analysis unit calculates the difference between the starting point temperature, the finishing point temperature, the relay point temperature and the middle temperature and a preset upper temperature limit, compares the obtained temperature difference with the temperature allowance, generates a temperature excessive signal if the temperature difference is smaller than the temperature allowance, generates a temperature normal signal if the temperature difference is larger than or equal to the temperature allowance, wherein the temperature normal signal and the temperature excessive signal belong to an electric tracing band single body operation signal, and sends the electric tracing band single body operation signal to the early warning control unit.
The multi-band temperature analysis unit performs parallel analysis through operation data of a plurality of groups of electric tracing bands, obtains the operation data of n electric tracing bands, performs parallel comparison on the starting point temperature, the end point temperature, the relay point temperature and the middle temperature of the n electric tracing bands, and passes through a variance formulaCalculating the starting point temperatureVariance S1 of the degree, variance S2 of the end temperature, variance S3 of the relay point temperature, variance S4 of the middle temperature, wherein S is in a variance formula 2 The variance, n is the number of samples, X is a variable, and X corresponds to the starting point temperature, the end point temperature, the relay point temperature and the middle temperature respectively;
the multi-band temperature analysis unit sums the variance S1 of the starting temperature, the variance S2 of the ending temperature and the variance S3 of the relay point temperature, the variance S4 of the middle temperature to obtain the total variance S0, meanwhile, the starting temperature, the ending temperature, the relay point temperature and the middle temperature are summed to obtain the total temperature, the total variance S0 is divided by the total temperature to obtain the deviation proportion, the multi-band temperature analysis unit compares the deviation proportion with a preset proportion threshold value, if the deviation proportion is larger than the preset proportion threshold value, a temperature instability signal is generated, if the deviation proportion is smaller than the preset proportion threshold value, a temperature stability signal is generated, the temperature stability signal and the temperature instability signal belong to the operation signals of the electric heat tracing band region, the operation signals of the electric heat tracing band region are sent to the early warning control unit, all the operation states of the electric heat tracing band region are unified, the operation states of the electric heat tracing band region are possibly safe operation states or the abnormal operation states, the dispersion degree of the operation data of each electric heat tracing band is small, the temperature instability signal indicates the operation data of a plurality of electric heat band individuals in the region is high in degree of dispersion, and the degree of the electric heat band individual operation data is large in degree.
After the early warning control unit obtains the single operation signal of the electric tracing band and the operation signal of the electric tracing band region, the single operation signal of the electric tracing band and the operation signal of the electric tracing band region are combined, after the early warning control unit obtains the temperature stabilizing signal, the number ratio of the electric tracing bands generating the overhigh temperature signal and the normal temperature signal in the region is calculated, if the ratio is smaller than a preset ratio, no reaction is made, if the ratio is larger than or equal to the preset ratio, large-scale abnormal early warning of the region is generated, and after the early warning control unit obtains the overhigh temperature signal, high-temperature early warning is generated
Embodiment two:
referring to fig. 1-2, the humidity difference detection unit is capable of detecting the humidity inside and outside the electric tracing band in the operation environment, detecting the humidity outside the electric tracing band by the humidity difference detection unit, recording the detected humidity as the outside humidity, detecting the temperature inside the electric tracing band as the inside humidity, comparing the inside humidity with a preset working humidity upper limit by the humidity difference detection unit, generating a humidity normal signal if the inside humidity is smaller than the preset working humidity upper limit, calculating the difference between the inside humidity and the outside humidity if the inside humidity is larger than the preset working humidity upper limit, recording the calculated difference as a humidity difference, comparing the humidity difference with a preset difference threshold by the humidity difference detection unit, generating a humidity leakage signal if the humidity difference is smaller than the preset difference threshold, generating a humidity abnormal signal if the humidity difference is larger than the preset difference threshold, and sending the humidity normal signal, the humidity leakage signal or the humidity abnormal signal to the control unit, wherein the humidity normal signal indicates that the humidity inside the electric tracing band is at a normal loading level, the abnormal signal indicates that the humidity inside the electric tracing band is at a higher level, and the humidity leakage signal indicates that the electric tracing band is at a higher level and a higher than the external temperature, and the electric tracing band can be broken;
the intrusion protection unit can detect the protective layer of the electric tracing band, generate an electric tracing band protection complete signal or an electric tracing band protection damage signal, and send the electric tracing band protection complete signal or the electric tracing band protection damage signal to the early warning control unit.
The early warning control unit performs combined analysis on the humidity normal signal, the humidity abnormal signal and the electric tracing band protection damage signal, and generates an intrusion early warning signal after acquiring the humidity leakage signal and the electric tracing band protection damage signal, so that the electric tracing band is possibly damaged; when the early warning control unit acquires any one of the humidity leakage signal and the humidity abnormality signal, an excessive humidity alarm is generated to remind a manager that the humidity in the electric tracing band is excessive.
According to the method, when the electric tracing band operates, the operation condition of the electric tracing band is analyzed, the operation control of the electric tracing band is realized, the comprehensive analysis is carried out according to the single operation condition of the electric tracing band and the operation difference condition of all the electric tracing bands in the area, the safe operation of the single electric tracing band can be controlled, the operation conditions of a plurality of electric tracing bands in the area can be comprehensively managed, manual inspection is not needed in the operation process of the electric tracing band, safety accidents caused by the abnormality of the electric tracing band are avoided, the damage and the excessive humidity condition in the operation process of the electric tracing band can be timely found through the analysis of the humidity data and the protection data of the electric tracing band, meanwhile, whether the humidity abnormality is caused by the damage can be judged through the combined analysis of the humidity and the damage condition, and maintenance and overhaul are convenient for management staff.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form 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 understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The intelligent temperature control early warning protection system for the electric tracing band of the pipeline is characterized by comprising a temperature detection unit, a same-band temperature analysis unit, a multi-band temperature analysis unit, a humidity difference detection unit, an intrusion protection unit and an early warning control unit, wherein the temperature detection unit can detect operation data of the electric tracing band and respectively send the operation data of the electric tracing band to the same-band temperature analysis unit and the multi-band temperature analysis unit;
the same-band temperature analysis unit acquires and analyzes the operation data of a single group of electric tracing bands, generates an electric tracing band single operation signal, and sends the electric tracing band single operation signal to the early warning control unit;
the multi-band temperature analysis unit performs parallel analysis through operation data of a plurality of groups of electric tracing bands, generates an electric tracing band region operation signal, and sends the electric tracing band region operation signal to the early warning control unit;
the humidity difference detection unit can detect the humidity inside and outside the electric tracing band operation environment, generate a humidity normal signal or a humidity abnormal signal according to the detection result, and send the humidity normal signal or the humidity abnormal signal to the early warning control unit;
the intrusion protection unit can detect the protective layer of the electric tracing band, generate an electric tracing band protection complete signal or an electric tracing band protection damage signal, and send the electric tracing band protection complete signal or the electric tracing band protection damage signal to the early warning control unit;
after the early warning control unit obtains the single operation signal of the electric heat tracing band and the regional operation signal of the electric heat tracing band, the single operation signal of the electric heat tracing band and the regional operation signal of the electric heat tracing band are combined, corresponding early warning signals are generated, and the early warning control unit performs combined analysis on the normal humidity signals, the abnormal humidity signals and the protection damage signals of the electric heat tracing band to generate intrusion early warning signals.
2. The intelligent temperature control early warning protection system of the pipeline electric tracing band according to claim 1, wherein the temperature detection unit is used for collecting a plurality of areas in the electric tracing band through the temperature sensor when detecting operation data of the electric tracing band, the collected plurality of areas are distributed in a starting end, an ending end, a connecting point and a middle section of the electric tracing band, the temperature detection unit is used for collecting a plurality of groups of electric tracing bands, the temperature of each collected group of electric tracing bands is recorded as one group of data, the temperature of the starting end of the electric tracing band in one group of data is recorded as a starting temperature, the temperature of the ending end of the electric tracing band is recorded as an ending temperature, the temperature of the connecting point of the electric tracing band is recorded as a relay point temperature, the temperature of the middle section of the electric tracing band is recorded as a middle section temperature, and all the data are recorded as operation data.
3. The intelligent temperature-control early warning protection system for the electric tracing band of the pipeline according to claim 1, wherein the same-band temperature analysis unitSelecting a group of data from the operation data, calculating the difference value between the starting point temperature and the end point temperature, recording the difference value as an end point temperature difference T, recording the difference value between the relay point temperature and the middle temperature as a middle temperature difference T, generating an electric tracing band temperature difference characteristic value R by the same band temperature analysis unit through formula analysis,wherein q is a preset weight coefficient;
the same-band temperature analysis unit respectively monitors the starting point temperature, the end point temperature, the relay point temperature and the middle temperature continuously, collects the temperatures at fixed intervals, calculates the temperature difference between the two collection, thereby obtaining the starting point temperature rise a1, the end point temperature rise a2, the relay point temperature rise a3 and the middle temperature rise a3, calculates the temperature allowance Y according to a formula,wherein k is a preset weight coefficient, and M0 is a preset temperature margin initial value.
4. The intelligent temperature control early warning protection system for the pipeline electric tracing band according to claim 3, wherein the same-band temperature analysis unit calculates a difference value between a starting point temperature, an ending point temperature, a relay point temperature and a middle temperature and a preset upper temperature limit, compares the obtained temperature difference value with a temperature allowance, generates a temperature over-high signal if the temperature difference value is smaller than the temperature allowance, and generates a temperature normal signal if the temperature difference value is greater than or equal to the temperature allowance.
5. The intelligent temperature control early warning protection system for the electric tracing band of the pipeline according to claim 4, wherein the multi-band temperature analysis unit obtains the operation data of n electric tracing bands, and compares the starting point temperature, the finishing point temperature, the relay point temperature and the middle temperature of the n electric tracing bands in parallel, and the variance formula is adoptedCalculating a variance S1 of the starting temperature, a variance S2 of the end temperature, a variance S3 of the relay point temperature and a variance S4 of the middle temperature, wherein S is in a variance formula 2 The variance, n is the number of samples, X is a variable, and X corresponds to the starting point temperature, the end point temperature, the relay point temperature and the middle temperature respectively;
the multi-band temperature analysis unit sums the variance S1 of the starting point temperature, the variance S2 of the end point temperature and the variance S3 of the relay point temperature, the variance S4 of the middle temperature to obtain a total variance S0, meanwhile sums the starting point temperature, the end point temperature, the relay point temperature and the middle temperature to obtain a total temperature, divides the total variance S0 by the total temperature to obtain a deviation ratio, the multi-band temperature analysis unit compares the deviation ratio with a preset ratio threshold, if the deviation ratio is larger than the preset ratio threshold, a temperature instability signal is generated, and if the deviation ratio is smaller than the preset ratio threshold, a temperature stability signal is generated.
6. The intelligent temperature control early warning protection system of the electric tracing band according to claim 1, wherein the humidity difference detection unit detects the humidity outside the electric tracing band, records the detected humidity as the external humidity, detects the temperature inside the electric tracing band as the internal humidity, compares the internal humidity with a preset working humidity upper limit, generates a humidity normal signal if the internal humidity is smaller than the preset working humidity upper limit, calculates the difference between the internal humidity and the external humidity if the internal humidity is larger than the preset working humidity upper limit, records the calculated difference as a humidity difference, compares the humidity difference with a preset difference threshold, generates a humidity leakage signal if the humidity difference is smaller than the preset difference threshold, and generates a humidity abnormal signal if the humidity difference is larger than the preset difference threshold.
7. The intelligent temperature control early warning protection system of the pipeline electric tracing band according to claim 1, wherein after the early warning control unit obtains the temperature stabilizing signal, the number ratio of the electric tracing bands generating the temperature overhigh signal and the temperature normal signal in the area is calculated, if the ratio is smaller than a preset ratio, no reaction is made, and if the ratio is larger than or equal to the preset ratio, the abnormal early warning of the area is generated;
after the early warning control unit acquires the temperature over-high signal, generating high-temperature early warning;
the early warning control unit generates an intrusion early warning signal after acquiring a humidity leakage signal and an electric tracing band protection breakage signal;
and when the early warning control unit acquires any one of the humidity leakage signal and the humidity abnormal signal, an excessive humidity alarm is generated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311673287.XA CN117593856A (en) | 2023-12-07 | 2023-12-07 | Intelligent temperature control early warning protection system for pipeline electric tracing band |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311673287.XA CN117593856A (en) | 2023-12-07 | 2023-12-07 | Intelligent temperature control early warning protection system for pipeline electric tracing band |
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| CN117593856A true CN117593856A (en) | 2024-02-23 |
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- 2023-12-07 CN CN202311673287.XA patent/CN117593856A/en active Pending
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