CN219776926U - Crystallization temperature real-time monitoring device is prevented to distributed optical fiber ammonia pipeline - Google Patents
Crystallization temperature real-time monitoring device is prevented to distributed optical fiber ammonia pipeline Download PDFInfo
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- CN219776926U CN219776926U CN202320135120.7U CN202320135120U CN219776926U CN 219776926 U CN219776926 U CN 219776926U CN 202320135120 U CN202320135120 U CN 202320135120U CN 219776926 U CN219776926 U CN 219776926U
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- temperature
- ammonia gas
- gas pipeline
- optical fiber
- pipeline
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 239000013307 optical fiber Substances 0.000 title claims abstract description 38
- 238000002425 crystallisation Methods 0.000 title claims abstract description 10
- 230000008025 crystallization Effects 0.000 title claims abstract description 10
- 238000012806 monitoring device Methods 0.000 title claims abstract description 10
- 229910021529 ammonia Inorganic materials 0.000 title claims description 34
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000004321 preservation Methods 0.000 claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 238000009529 body temperature measurement Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 238000007405 data analysis Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001069 Raman spectroscopy Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model discloses a distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring device, which comprises an ammonia gas pipeline paved on a cable bridge, wherein a heating layer and a heat preservation layer are arranged on the outer wall of the ammonia gas pipeline, the heating layer is positioned between the outer wall of the ammonia gas pipeline and the heat preservation layer, and comprises an electric tracing band for providing heat, aluminum glue for fixing, a detection optical fiber serving as temperature sensor for detecting temperature information on the surface of a cable, a temperature measuring host installed in a monitoring room, a photoelectric alarm, an industrial personal computer and a temperature regulator. The utility model fully utilizes the characteristic of continuous distribution of optical fiber space, combines sensing and sensing, can accurately monitor the temperature of the ammonia gas pipeline in real time for twenty-four hours, maintains the abnormal temperature points of the electric tracing band and the ammonia gas pipeline in time, is convenient for maintenance before crystallization of the ammonia gas pipeline, avoids interruption of the production line of a power plant, and ensures the operation efficiency of the power plant.
Description
Technical Field
The utility model relates to the technical field of ammonia gas pipeline temperature monitoring, in particular to a distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring device.
Background
The ammonia is needed to be used as a cooling medium in the operation process of the power plant, the power plant ammonia pipeline is an important link in the ammonia conveying process of the power plant, and is usually matched with a heat tracing pipe for use, and the heat tracing pipe has the effects of preventing the viscosity of liquid in the pipe from increasing at low temperature, increasing the pressure drop in the pipe, increasing the power consumption and saving energy.
The ammonia pipeline of the power plant normally has two kinds of steam tracing and electric tracing, the normal tracing temperature is 140-180 ℃, wherein electric tracing is easy to break down after contacting water in rainy weather, when the pipeline temperature is reduced to below 110 ℃, ammonia can appear crystallization phenomenon and irreversible, the use of a pin removal system in the power plant is influenced, the pipeline damage of the ammonia pipeline, the damage of an insulating layer on the outer wall of the ammonia pipeline and the damage of a heat tracing pipe can all lead to the reduction of the local temperature of the ammonia pipeline, the heat tracing pipe is more used for splicing two adjacent heat tracing pipes together in the use process, and the number of the heat tracing pipes is determined according to the length of the ammonia pipeline.
To sum up current ammonia pipeline, the length of ammonia pipeline is longer in the use, and the factor that influences the temperature of ammonia pipeline is more, leads to being difficult to the accurate node position that confirms ammonia pipeline temperature reduction of first time, can not in time maintain before the crystallization phenomenon can appear in ammonia, leads to appearing breaking off in the production line of power plant to influence the operating efficiency of power plant.
Disclosure of Invention
The utility model aims to provide a distributed optical fiber ammonia pipeline crystallization-preventing temperature real-time monitoring device so as to solve the problems in the background technology.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a crystallization temperature real-time supervision device is prevented to distributed optic fibre ammonia pipeline, includes the ammonia pipeline of laying on the cable bridge, ammonia pipeline outer wall is provided with zone of heating and heat preservation, the zone of heating is located ammonia pipeline outer wall with between the heat preservation, the zone of heating is including being used for providing thermal electric tracing area, being used for fixed aluminium glue, detecting the optic fibre of cable surface temperature information as temperature sensor, still including installing temperature measurement host computer, photoelectric alarm, industrial computer and the temperature regulator at the control room, the temperature regulator with the power supply end electricity in electric tracing area is connected.
Further, the electric tracing band is spirally wound on the outer wall of the ammonia gas pipeline, the electric tracing band is fixed on the outer wall of the ammonia gas pipeline through aluminum glue, the heat insulation layer comprises heat insulation cotton and a waterproof layer, and the waterproof layer is located on the outer wall of the heat insulation cotton.
Further, the detection optical fibers are at least two, and the two detection optical fibers are symmetrically arranged at the top end and the bottom end of the electric tracing band.
Further, a laser used for providing a laser light source, a photoelectric detector used for receiving scattered light, a signal collector, a temperature monitor used for measuring temperature and a relay used for circuit conversion are arranged in the temperature measuring host.
Further, the temperature measurement host computer with the transmitting end electricity of detecting optic fibre is connected, the laser instrument is as laser light source sends laser pulse transmission to detecting optic fibre, detecting optic fibre with photoelectric detector electricity is connected, photoelectric detector with signal acquisition ware electricity is connected, signal acquisition ware with temperature monitor electricity is connected, by temperature monitor carries out data analysis, temperature regulator pass through the network with the industrial computer is connected.
Further, the temperature measuring host is used for collecting and processing temperature information on the surface of the ammonia gas pipeline, the industrial personal computer is connected with the temperature measuring host through a network for communication, the photoelectric alarm is electrically connected with the industrial personal computer, the industrial personal computer sets parameters of the temperature measuring host such as alarm parameters, alarm monitoring area division and communication parameters through embedded temperature measuring software of the industrial personal computer, and a display of the industrial personal computer displays the temperature information.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, by arranging the temperature monitor, the detection optical fiber, the electric tracing band, the temperature measuring host, the photoelectric alarm, the industrial personal computer and the temperature regulator, the characteristic of continuous distribution of the optical fiber space is fully utilized, the detection optical fiber is closely attached to the ammonia gas pipeline, so that the sensing and sensing are integrated, the temperature of the ammonia gas pipeline can be accurately monitored in real time for twenty-four hours, the abnormal temperature points of the electric tracing band and the ammonia gas pipeline can be maintained in time, the maintenance is conveniently carried out before crystallization of the ammonia gas pipeline occurs, the interruption of the production line of a power plant is avoided, and the operation efficiency of the power plant is ensured.
2. According to the utility model, the temperature measuring host, the photoelectric alarm and the industrial personal computer are arranged, an alarm is sent out through the photoelectric alarm after an abnormal condition occurs, an alarm window is popped up on a display of the industrial personal computer, a large number of electronic sensors are not required to be arranged on the surface of an ammonia gas pipeline through a complex control circuit, detection and signal transmission can be completed by adopting a detection optical fiber independently, all the arrangement is completed at a terminal, and a real-time temperature measuring system is simple and reliable.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a cross-sectional view of an ammonia gas pipeline in accordance with the present utility model;
FIG. 2 is a schematic diagram of the relative positions of ammonia gas pipelines and detection fibers in the utility model;
FIG. 3 is a connection diagram of an industrial personal computer according to the present utility model;
FIG. 4 is a structural diagram of a temperature measuring host in the present utility model;
in the figure: 1. an ammonia gas pipe; 2. a photoelectric alarm; 3. a heating layer; 301. an electric tracing band; 302. aluminum glue; 303. detecting an optical fiber; 4. a heat preservation layer; 401. thermal insulation cotton; 402. a waterproof layer; 5. a temperature measuring host; 501. a laser; 502. a photodetector; 503. a signal collector; 504. a temperature monitor; 505. a relay; 6. an industrial personal computer; 7. a temperature regulator.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present utility model provides the following technical solutions: the utility model provides a crystallization temperature real-time supervision device is prevented to distributed optic fibre ammonia pipeline, includes the ammonia pipeline 1 of laying on the cable bridge, ammonia pipeline 1 outer wall is provided with zone of heating 3 and heat preservation 4, zone of heating 3 is located ammonia pipeline 1 outer wall with between the heat preservation 4, zone of heating 3 is including being used for providing thermal electric tracing area 301, be used for fixed aluminium glue 302, as the detection optic fibre 303 of temperature sensor detection cable surface temperature information, still including install temperature measurement host computer 5, photoelectric alarm 2, industrial computer 6 and temperature regulator 7 at the control room, temperature regulator 7 with the power supply end electricity of electric tracing area 301 is connected, electric tracing area 301 is in with spiral winding ammonia pipeline 1 outer wall, electric tracing area 301 passes through aluminium glue 302 to be fixed ammonia pipeline 1 outer wall, heat preservation 4 includes heat preservation cotton 401 and waterproof layer 402, waterproof layer 402 is located heat preservation cotton 401 outer wall, detection optic fibre 303 is provided with two at least, two detection optic fibre 303 locate the top symmetry of electric tracing area 301 and heat preservation area 301.
Referring to fig. 1-4, a laser 501 for providing a laser light source, a photoelectric detector 502 for receiving scattered light, a signal collector 503, a temperature monitor 504 for measuring temperature and a relay 505 for circuit conversion are arranged in the temperature measuring host 5, the temperature measuring host 5 is electrically connected with a transmitting end of the detecting optical fiber 303, the laser 501 is used as the laser light source to transmit laser pulses to the detecting optical fiber 303, the detecting optical fiber 303 is electrically connected with the photoelectric detector 502, the photoelectric detector 502 is electrically connected with the signal collector 503, the signal collector 503 is electrically connected with the temperature monitor 504, the temperature monitor 504 performs data analysis, the temperature regulator 7 is connected with the industrial personal computer 6 through a network, the temperature measuring host 5 is used for collecting and processing temperature information on the surface of the ammonia pipeline 1, the industrial personal computer 6 is connected with the temperature measuring host 5 through the network for communication, the photoelectric detector 2 is electrically connected with the industrial personal computer 6, the industrial personal computer 6 is used for displaying alarm parameters of the temperature measuring host 6 through embedded communication software, the temperature monitor 6 displays alarm parameters, and the like.
The specific implementation mode is as follows: when the device is used, first-step equipment is paved, an ammonia gas pipeline 1 is paved on a cable bridge according to a pre-designed drawing, an electric tracing band 301 is spirally paved on the outer wall of the ammonia gas pipeline 1 and is fixed through an aluminum adhesive 302, detection optical fibers 303 are respectively paved at the top end and the bottom end of the ammonia gas pipeline 1, the transmitting end of the detection optical fibers 303 are electrically connected with a temperature measuring host 5, the power supply end of the electric tracing band 301 is electrically connected with a temperature regulator 7, the detection optical fibers 303 are electrically connected with a photoelectric detector 502, the photoelectric detector 502 is electrically connected with a signal collector 503, the signal collector 503 is electrically connected with a temperature monitor 504, and the temperature monitor 504 performs data analysis; the equipment is debugged through the industrial personal computer 6 and embedded temperature measuring software thereof, the equipment operates in the second step, the industrial personal computer 6 sends out a heating instruction, the industrial personal computer 6 adjusts the temperature regulator 7 to supply power to the electric tracing band 301, the heating temperature is regulated, the electric tracing band 301 heats the pipeline, the industrial personal computer 6 sends out a real-time monitoring instruction, the laser 501 is used as a laser light source to send out laser pulses to be transmitted to the detection optical fiber 303, the temperature measurement is carried out by utilizing the backward Raman scattering effect, the nature of Raman scattering is that the thermal vibration interaction of photons and optical fiber molecules generates energy exchange, when the laser pulses are incident into the optical fiber, the laser pulses propagate forwards along the detection optical fiber 303, the laser pulses collide with molecules inside the detection optical fiber 303 in the process, and then reflection is generated at the molecules, the reflected light is the backward scattered light, the backward scattered light is obtained at the transmitting end, the temperature measuring host computer 5 receives the backward scattered light, the information is converted and then is transmitted to the industrial personal computer 6 for analysis, the intensity of the backward Raman scattered light is in direct proportion to the temperature, the higher the temperature is, the larger the intensity is, the temperature distributed along the detection optical fiber 303 is obtained by measuring the scattered light intensity, the temperature of the ammonia pipeline 1 is monitored, the position of a temperature measuring point is determined by utilizing the optical time domain reflection OTDR technology, the echo time of a measuring signal is acquired by the temperature measuring host computer 5, the position of the temperature measuring point is calculated, the real-time data detected by the temperature monitor 504 is further analyzed by the industrial personal computer 6, an alarm is sent out by the photoelectric alarm 2 after an abnormal condition occurs, and an alarm window is popped up on a display of the industrial personal computer 6.
The working principle of the utility model is as follows:
1. according to the utility model, by arranging the temperature monitor 504, the detection optical fiber 303, the electric tracing band 301, the temperature measuring host 5, the photoelectric alarm 2, the industrial personal computer 6 and the temperature regulator 7, the characteristic of continuous distribution of optical fiber space is fully utilized, the detection optical fiber 303 is tightly attached to the ammonia gas pipeline 1, so that the combination of sensing and sensing is realized, the temperature of the ammonia gas pipeline 1 can be accurately monitored in real time for twenty-four hours, the abnormal temperature points of the electric tracing band 301 and the ammonia gas pipeline 1 can be maintained in time, the maintenance is conveniently carried out before crystallization of the ammonia gas pipeline 1 occurs, the interruption of a production line of a power plant is avoided, and the operation efficiency of the power plant is ensured.
2. According to the utility model, the temperature measuring host 5, the photoelectric alarm 2 and the industrial personal computer 6 are arranged, an alarm is sent out through the photoelectric alarm 2 after an abnormal condition occurs, an alarm window is popped up on a display of the industrial personal computer 6, a large number of electronic sensors are not required to be arranged on the surface of the ammonia gas pipeline 1 through a complex control circuit, detection and signal transmission can be completed by adopting the detection optical fiber 303 alone, all the settings are completed at a terminal, and a real-time temperature measuring system is simple and reliable.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides a crystallization temperature real-time supervision device is prevented to distributed optical fiber ammonia pipeline, includes ammonia pipeline (1) of laying on cable testing bridge, its characterized in that: the ammonia pipeline (1) outer wall is provided with zone of heating (3) and heat preservation (4), zone of heating (3) are located ammonia pipeline (1) outer wall with between heat preservation (4), zone of heating (3) are including being used for providing thermal electric tracing area (301), be used for fixed aluminium glue (302), detect cable surface temperature information's detection optic fibre (303) as temperature sensor, still including installing temperature measurement host computer (5), photoelectric alarm (2), industrial computer (6) and temperature regulator (7) at the control room, temperature regulator (7) with the power supply end electricity of electric tracing area (301) is connected.
2. The distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring device according to claim 1, wherein: the electric tracing band (301) is spirally wound on the outer wall of the ammonia gas pipeline (1), the electric tracing band (301) is fixed on the outer wall of the ammonia gas pipeline (1) through aluminum glue (302), the heat insulation layer (4) comprises heat insulation cotton (401) and a waterproof layer (402), and the waterproof layer (402) is located on the outer wall of the heat insulation cotton (401).
3. The distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring device according to claim 1, wherein: the detection optical fibers (303) are at least two, and the two detection optical fibers (303) are symmetrically arranged at the top end and the bottom end of the outer wall of the electric tracing band (301).
4. The distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring device according to claim 1, wherein: the temperature measuring host (5) is internally provided with a laser (501) for providing a laser light source, a photoelectric detector (502) for receiving scattered light, a signal collector (503), a temperature monitor (504) for measuring temperature and a relay (505) for circuit conversion.
5. The distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring device according to claim 4, wherein: the temperature measurement host computer (5) with the transmitting end electricity of detecting optic fibre (303), laser instrument (501) are as laser light source to send laser pulse transmission to detecting optic fibre (303), detecting optic fibre (303) with photodetector (502) electricity is connected, photodetector (502) with signal acquisition ware (503) electricity is connected, signal acquisition ware (503) with temperature monitor (504) electricity is connected, by temperature monitor (504) carries out data analysis, temperature regulator (7) through the network with industrial computer (6) are connected.
6. The distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring device according to claim 1, wherein: the temperature measuring host (5) is used for collecting and processing temperature information on the surface of the ammonia pipeline (1), the industrial personal computer (6) is connected with the temperature measuring host (5) through a network for communication, the photoelectric alarm (2) is electrically connected with the industrial personal computer (6), the industrial personal computer (6) is used for setting alarm parameters, alarm monitoring area division and communication parameters through embedded temperature measuring software, and a display of the industrial personal computer (6) is used for displaying the temperature information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320135120.7U CN219776926U (en) | 2023-02-07 | 2023-02-07 | Crystallization temperature real-time monitoring device is prevented to distributed optical fiber ammonia pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320135120.7U CN219776926U (en) | 2023-02-07 | 2023-02-07 | Crystallization temperature real-time monitoring device is prevented to distributed optical fiber ammonia pipeline |
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| Publication Number | Publication Date |
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| CN219776926U true CN219776926U (en) | 2023-09-29 |
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| CN202320135120.7U Active CN219776926U (en) | 2023-02-07 | 2023-02-07 | Crystallization temperature real-time monitoring device is prevented to distributed optical fiber ammonia pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232680A (en) * | 2023-02-07 | 2023-12-15 | 南京森特智能科技有限公司 | Distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring method |
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2023
- 2023-02-07 CN CN202320135120.7U patent/CN219776926U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232680A (en) * | 2023-02-07 | 2023-12-15 | 南京森特智能科技有限公司 | Distributed optical fiber ammonia gas pipeline crystallization-preventing temperature real-time monitoring method |
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