CN215866420U - BoTDA-based distributed ship seawater pipeline real-time monitoring system - Google Patents
BoTDA-based distributed ship seawater pipeline real-time monitoring system Download PDFInfo
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- CN215866420U CN215866420U CN202120536418.XU CN202120536418U CN215866420U CN 215866420 U CN215866420 U CN 215866420U CN 202120536418 U CN202120536418 U CN 202120536418U CN 215866420 U CN215866420 U CN 215866420U
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Abstract
The utility model discloses a BOTDA-based distributed ship seawater pipeline real-time monitoring system, wherein a signal transmitting end comprises a pumping optical module and a detection optical module; the information acquisition end mainly comprises a sensing optical fiber and a monitor module which are laid together with a whole-ship seawater pipeline; the data processing and displaying end mainly comprises a coupler, a calculation processing module and a display console. Once a seawater pipeline is cracked or leaked, the sensing optical fiber at a certain position is stretched, extruded or subjected to temperature change, Brillouin frequency shift at the position is changed, the monitor module acquires that the optical power in the coupler is changed, the calculation processing module analyzes the position where the seawater pipeline is cracked or leaked and the damage degree according to the optical power change technology, an auxiliary decision scheme is given, and meanwhile, the position is displayed on a display and control console, so that the real-time online monitoring on the seawater pipeline is realized. The system can quickly and accurately position the damaged position and evaluate the damaged degree, does not need manual operation, and is not influenced by conditions such as personnel experience and the like.
Description
Technical Field
The utility model relates to a ship damage monitoring technology, in particular to a BOTDA-based distributed ship seawater pipeline real-time monitoring system.
Background
The ship needs to use seawater for equipment cooling, deck flushing and the like, and whether a seawater pipeline system can be normally used is directly related to whether the ship can normally run. Seawater pipeline systems are distributed all over all corners of the whole ship, the pipeline laying distance is long, and the seawater pipeline systems are mostly arranged on the side walls or corner areas of the ship, so that the laying environment is complex; when a seawater pipeline system is used as ship hiding engineering, after the seawater pipeline system is damaged, firstly, the work of locating the damaged position and evaluating the damaged range wastes time and labor, and meanwhile, once the damaged seawater pipeline is found, a larger system or equipment is usually damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a BOTDA-based distributed ship seawater pipeline real-time monitoring system which can be used for monitoring the safety of a seawater pipeline on line all day long and solving the problem of monitoring the breakage of the seawater pipeline.
In order to achieve the above object, the present invention provides a ship seawater pipeline real-time monitoring system based on BOTDA distribution, comprising: the system comprises a signal transmitting end, an information acquisition end and a data processing and displaying end;
the signal transmitting end is connected with the information acquisition end;
and the data processing and displaying end is connected with the signal transmitting end and the information acquisition end.
The above-mentioned a based on BOTDA distributing type boats and ships sea water pipeline real-time monitoring system, wherein, signal transmission end includes: the device comprises a pumping optical module and a detection optical module.
The above-mentioned ship sea water pipeline real-time monitoring system based on BOTDA distributing type, wherein, the information acquisition end includes: and the sensing optical fiber and the monitor module are laid together with the seawater pipeline of the whole ship.
The above-mentioned ship sea water pipeline real-time monitoring system based on BOTDA distributing type, wherein, data processing and display end includes: the system comprises a coupler, a calculation processing module and a display control console; the coupler is connected with the monitor module; the computing processing module is connected with the monitor module; and the calculation processing module is connected with the display control console.
The ship seawater pipeline real-time monitoring system based on the BOTDA distribution type is characterized in that one end of the sensing optical fiber is connected to the pumping optical module and the coupler; the other end of the sensing optical fiber is connected with the detection optical module.
Above-mentioned a ship sea water pipeline real-time monitoring system based on BOTDA distributing type, wherein, when the system during operation, pumping optical module transmission pulse light pours into sensing fiber into, and the probe light module transmission continuous light pours into sensing fiber into, and when pulse light and continuous light's frequency difference and the brillouin frequency of certain region in the optic fibre shifted the looks the equal, will produce brillouin amplification effect in this region, and two bunches of light take place energy transfer each other.
The BOTDA-based distributed ship seawater pipeline real-time monitoring system is characterized in that the Brillouin frequency shift, the temperature and the strain have linear relations; the frequency difference corresponding to the maximum energy transfer on each small segment of area of the optical fiber is determined by detecting the optical power of continuous light from the coupler while continuously adjusting the frequency of laser emitted by the pump optical module and the detection optical module, so that temperature and strain information is obtained, and distributed measurement is realized.
Above-mentioned a ship sea water pipeline real-time monitoring system based on BOTDA distributing type, wherein, in case a certain sea water pipeline takes place crackle or seepage, the sensing optical fiber of this department will receive tensile, extrusion or temperature change, the Brillouin frequency shift of this department changes, monitor module gathers the optical power change in the coupler, calculation processing module shows the position and the damage degree that take place the sea water pipeline and take place crackle or seepage according to optical power change technical analysis, give the aid decision scheme, show on the display console simultaneously, realize the real time monitoring to sea water pipeline.
The BOTDA-based distributed real-time monitoring system for the ship seawater pipeline utilizes the Brillouin amplification effect to monitor the temperature and strain changes in the sensing optical fiber laid in the same line contact with the ship seawater pipeline in real time, so that the safety of the seawater pipeline is monitored in real time.
Compared with the prior art, the utility model has the technical beneficial effects that:
compared with the traditional mode that after equipment is found to be damaged by personnel, the seawater pipeline is checked one by one to find out where the seawater pipeline is damaged, the system can realize the safety of all-weather real-time online monitoring of the seawater pipeline, once the seawater pipeline cracks or leaks, the damaged position can be quickly and accurately positioned and the damaged degree can be evaluated, meanwhile, an auxiliary decision can be given for the damaged position and the damaged degree, all quick response actions are automatically completed by the system without manual operation, and the system is not influenced by conditions such as personnel experience.
Drawings
The utility model discloses a BOTDA-based distributed ship seawater pipeline real-time monitoring system, which is provided by the following embodiments and attached drawings.
Fig. 1 is a system diagram of a BOTDA-based distributed ship seawater pipeline real-time monitoring system.
Detailed Description
The following describes the real-time monitoring system for a ship seawater pipeline based on BOTDA distribution in further detail with reference to the accompanying drawings.
As shown in fig. 1, this embodiment is an example of a ship seawater pipeline real-time monitoring system based on BOTDA distribution. Firstly, a sensing optical fiber and a ship seawater pipeline are laid in a way of line contact, and one end of the optical fiber is connected with a pumping optical module and a coupler; the other end of the optical fiber is connected with a detection optical module; the coupler is connected with the monitor module; the detector is connected with the calculation processing module; the calculation processing module is connected with the display control console, and a specific system diagram can be shown in figure 1. When the system works, the pumping light module emits pulse light to be injected into the sensing optical fiber, the detection light module emits continuous light to be injected into the sensing optical fiber, when the frequency difference between the pulse light and the continuous light is equal to the Brillouin frequency phase shift of a certain area in the optical fiber, the Brillouin amplification effect can be generated in the area, and energy transfer occurs between the two beams of light. The Brillouin frequency shift has a linear relation with temperature and strain, so that the frequency difference corresponding to the maximum energy transfer on each small section of area of the optical fiber can be determined by detecting the optical power of continuous light from the coupler while continuously adjusting the frequency of laser emitted by the pump optical module and the probe optical module, thereby obtaining temperature and strain information, realizing distributed measurement and having higher measurement precision. Once a seawater pipeline is cracked or leaked, the sensing optical fiber at a certain position is stretched, extruded or subjected to temperature change, Brillouin frequency shift at the position is changed, the monitor module acquires that the optical power in the coupler is changed, the calculation processing module analyzes the position where the seawater pipeline is cracked or leaked and the damage degree according to the optical power change technology, an auxiliary decision scheme is given, and meanwhile, the position is displayed on a display and control console, so that the seawater pipeline is monitored in real time.
Claims (9)
1. The utility model provides a based on BOTDA distributing type boats and ships sea water pipeline real-time monitoring system which characterized in that includes: the system comprises a signal transmitting end, an information acquisition end and a data processing and displaying end;
the signal transmitting end is connected with the information acquisition end;
and the data processing and displaying end is connected with the signal transmitting end and the information acquisition end.
2. The BOTDA-based distributed ship seawater pipeline real-time monitoring system as claimed in claim 1, wherein the signal transmitting end comprises: the device comprises a pumping optical module and a detection optical module.
3. The BOTDA-based distributed ship seawater pipeline real-time monitoring system as claimed in claim 2, wherein the information acquisition end comprises: and the sensing optical fiber and the monitor module are laid together with the seawater pipeline of the whole ship.
4. The BOTDA-based distributed ship seawater pipeline real-time monitoring system as claimed in claim 3, wherein the data processing and displaying end comprises: the system comprises a coupler, a calculation processing module and a display control console; the coupler is connected with the monitor module; the computing processing module is connected with the monitor module; and the calculation processing module is connected with the display control console.
5. The BOTDA-based distributed ship seawater pipeline real-time monitoring system of claim 4, wherein one end of the sensing optical fiber is connected to a pumping optical module and a coupler; the other end of the sensing optical fiber is connected with the detection optical module.
6. The BOTDA-based distributed ship seawater pipeline real-time monitoring system as claimed in claim 5, wherein when the system is in operation, the pumping optical module emits pulsed light to be injected into the sensing optical fiber, the detection optical module emits continuous light to be injected into the sensing optical fiber, when the frequency difference between the pulsed light and the continuous light is equal to the Brillouin frequency shift of a certain region in the optical fiber, a Brillouin amplification effect is generated in the region, and energy transfer occurs between the two beams of light.
7. The BOTDA-based distributed ship seawater pipeline real-time monitoring system of claim 6, wherein the Brillouin frequency shift has a linear relation with temperature and strain; the frequency difference corresponding to the maximum energy transfer on each small segment of area of the optical fiber is determined by detecting the optical power of continuous light from the coupler while continuously adjusting the frequency of laser emitted by the pump optical module and the detection optical module, so that temperature and strain information is obtained, and distributed measurement is realized.
8. The BOTDA-based distributed ship seawater pipeline real-time monitoring system as claimed in claim 7, wherein once a certain seawater pipeline is cracked or leaked, the sensing optical fiber at the certain position is subjected to stretching, extrusion or temperature change, Brillouin frequency shift at the certain position is changed, the monitor module collects the change of optical power in the coupler, the calculation processing module analyzes the position and damage degree of the crack or leakage of the seawater pipeline according to the optical power change technology, an auxiliary decision scheme is given, and the position and damage degree are displayed on the display console, so that the seawater pipeline is monitored in real time.
9. The BOTDA-based distributed real-time monitoring system for the ship seawater pipeline as claimed in claim 3, wherein the system utilizes Brillouin amplification effect to monitor the temperature and strain changes in the sensing optical fiber laid in the same line with the ship seawater pipeline in real time, so as to monitor the safety of the seawater pipeline in real time.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116168495A (en) * | 2023-02-28 | 2023-05-26 | 大连理工大学 | Online damage monitoring netting gear based on optical fiber monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116168495A (en) * | 2023-02-28 | 2023-05-26 | 大连理工大学 | Online damage monitoring netting gear based on optical fiber monitoring |
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