CN111141326A - Miniature utility tunnel health monitoring system based on coupling analysis of multiple physical fields - Google Patents
Miniature utility tunnel health monitoring system based on coupling analysis of multiple physical fields Download PDFInfo
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- CN111141326A CN111141326A CN201911266706.1A CN201911266706A CN111141326A CN 111141326 A CN111141326 A CN 111141326A CN 201911266706 A CN201911266706 A CN 201911266706A CN 111141326 A CN111141326 A CN 111141326A
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
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Abstract
The invention provides a micro comprehensive pipe gallery health monitoring system based on multi-physical field coupling analysis, which comprises a processing module, a conversion module, a transmission module and a sensor group, wherein the processing module is used for processing the health of a plurality of sensors; the sensor group comprises a water leakage sensor, a temperature sensor, a humidity sensor, a water pressure sensor, a water flow sensor and a gas sensor. Still provide a miniature utility tunnel, including the feed pipe, communication cable, power cable and as before miniature utility tunnel. A method for monitoring the micro comprehensive pipe gallery health monitoring system based on multi-physical field coupling analysis is also provided. On the basis of monitoring each index parameter in the pipe gallery in real time, the relevant monitoring index is analyzed more carefully through multi-physical-field coupling, and early warning and alarming are carried out on abnormal index parameters so as to implement targeted effective monitoring on the miniature comprehensive pipe gallery and ensure the safety and reliability of the operation of the miniature comprehensive pipe gallery.
Description
Technical Field
The invention relates to the technical field of health monitoring for a comprehensive pipe rack, in particular to a micro comprehensive pipe rack health monitoring system based on multi-physical-field coupling analysis.
Background
For large-scale utility tunnel, miniature utility tunnel is less for cross sectional area (length 2.0 ~ 3.0m, wide 1.0 ~ 2.0m), and inner space is limited, and the pipeline kind is many and distribute densely (mainly including feed pipe, power cable and communication cable), and the staff business turn over overhauls the convenience slightly poor. The comprehensive pipe gallery belongs to an underground closed space and is not ventilated and moist, so that the possibility of generating volatile gas, inflammable gas and toxic gas exists, and the possibility of water leakage and water accumulation of a water supply pipe exists; meanwhile, when power equipment in the comprehensive pipe rack runs, the current can have a magnetic field, the cutting magnetic force lines can generate heat and emit heat, the temperature is increased, the possibility of fire is caused, and the life safety of workers can be endangered.
The health status of the mini utility tunnel should be monitored for the various conditions that may occur inside the mini utility tunnel described above. At present, no related prior art exists for health monitoring of the micro comprehensive pipe gallery; for the health monitoring of the comprehensive pipe gallery, due to the interaction among various physical fields (such as a temperature field, an electromagnetic field, a flow field and the like), the prior art is single-index monitoring (such as temperature, water pressure and toxic gas) of various monitoring indexes, and multi-physical-field coupling analysis among the monitoring indexes is not carried out.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a micro comprehensive pipe rack health monitoring system based on multi-physical-field coupling analysis, which can analyze relevant monitoring indexes (temperature, water pressure and water flow) in a more detailed and more real condition through multi-physical-field coupling on the basis of monitoring index parameters such as temperature, humidity, toxic gas, inflammable gas, water leakage condition of a water supply pipe, water pressure, water flow and the like in a real-time manner, and perform early warning aiming at abnormal index parameters so as to implement targeted and effective monitoring on a micro comprehensive pipe rack, thereby ensuring the safety and reliability of the operation of the micro comprehensive pipe rack and filling the gap of the health monitoring of the micro comprehensive pipe rack.
In order to solve the technical problem, the micro comprehensive pipe rack health monitoring system based on multi-physical field coupling analysis comprises a processing module, a conversion module, a transmission module and a sensor group.
The sensor group comprises a water leakage sensor, a temperature sensor, a humidity sensor, a water pressure sensor, a water flow sensor and a gas sensor.
The water leakage sensor is used for monitoring the water leakage condition of the water supply pipe.
The temperature sensor is used for monitoring the temperature of the communication cable and the power cable.
The humidity sensor is used for monitoring the humidity of the communication cable and the power cable.
The water pressure sensor is used for monitoring the water pressure in the water supply pipe.
The water flow sensor is used for monitoring the water flow in the water supply pipe.
The gas sensor is used for monitoring toxic gas and inflammable gas inside the micro pipe gallery.
The conversion module is used for converting the information collected by the sensor group into a signal which can be identified by the processing module.
The transmission module is used for transmitting the identifiable signals to the processing module.
The processing module is used for calculating the information and outputting a monitoring result.
The conversion module comprises a water leakage demodulation instrument, a temperature demodulation instrument, a humidity demodulation instrument and a gas demodulation instrument.
The water leakage sensor is in communication connection with the water leakage demodulator.
And the temperature sensor is in communication connection with the temperature demodulator.
And the humidity sensor is in communication connection with the humidity demodulator.
And the gas sensor is in communication connection with the gas demodulator.
The processing module comprises a host, an application server, a network server and an application terminal.
The host is in communication connection with the transmission module.
And the application server is in communication connection with the host.
And the application server is in communication connection with the application terminal.
And the network server is in communication connection with the host.
The invention also provides a mini-utility tunnel comprising a water supply pipe, a communication cable, a power cable and the mini-utility tunnel according to the claims.
The water leakage sensor is arranged in the water leakage monitoring line.
The water leakage monitoring line is arranged on the water supply pipe.
The temperature sensor is arranged in the temperature monitoring line.
The temperature monitoring lines are disposed on the communication cable and the power cable.
The humidity sensor is arranged in a humidity monitoring line.
The humidity monitoring line is disposed on the communication cable and the power cable.
The water pressure sensor and the water flow sensor are both arranged on the water supply pipe.
The gas sensor is disposed on the communication cable and the power cable.
The temperature monitoring wire and the humidity monitoring wire are clamped on the power cable through a buckle.
The water supply pipe is provided with a water leakage demodulator.
The communication cable and the power cable are provided with a temperature demodulator, a humidity demodulator and a gas demodulator.
The water leakage sensor is in communication connection with the water leakage demodulator.
And the temperature sensor is in communication connection with the temperature demodulator.
And the humidity sensor is in communication connection with the humidity demodulator.
And the gas sensor is in communication connection with the gas demodulator.
And a flange is arranged at the joint of the water supply pipe.
The water pressure sensor and the water flow sensor are both arranged on the flange.
The invention also provides a method for monitoring the micro comprehensive pipe rack health monitoring system based on the multi-physical-field coupling analysis, which comprises the following steps:
(1) when the water flow has pressure change, the water leakage sensor, the water pressure sensor and the water flow sensor monitor the water flow condition, the water leakage demodulator collects real-time data, the real-time data are transmitted to the host through the transmission module to be processed after adjustment, the signals are directly transmitted to the host through the transmission module by the water pressure sensor and the water flow sensor and then transmitted to the network server to be stored, or transmitted to the application end through the application server to obtain a water pressure distribution cloud picture of the water supply pipe, the water pressure of the whole section of the water supply pipe is inverted from the water pressure at the two ends of the water supply pipe, so that the pressure change of the water supply pipe can be checked in real time, the important attention is paid to the place with large pressure change, and the water leakage condition of the water supply.
(2) Temperature sensor, humidity transducer real-time measurement temperature, humidity data, temperature demodulation appearance and humidity demodulation appearance gather real-time data, transmit to the host computer through transmission module after the regulation and handle, transmit to network server saves, perhaps passes through application server transmits to the application, obtains the temperature distribution cloud picture in the utility tunnel, realizes the monitoring of the whole pipe gallery space temperature of the temperature reversal from local single-point to can look over the situation of change of pipe gallery temperature in real time, focus on the region that the temperature is high.
(3) The gas sensor monitors combustible and toxic gas, the gas demodulator collects real-time data, the real-time data are transmitted to the host through the transmission module after being adjusted, and the data are transmitted to the network server for storage, or transmitted to the application end through the application server, and the gas monitoring condition is output.
(4) When the performance index threatening the operation safety changes, the host can transmit early warning information to the application end, remind management and maintenance personnel to pay attention to the safety state in the pipe gallery, and provide maintenance and maintenance suggestions.
(5) The host machine constructs a corresponding three-dimensional model of the miniature comprehensive pipe rack, the measuring points of the sensor are displayed in the application end platform, three-dimensional visualization of pipe rack monitoring is achieved, measuring point information such as measuring point data and change curves is checked in real time, the distribution condition of a temperature field in the pipe rack is checked in real time, the influence of the temperature field on each device in the pipe rack is analyzed, and manual inspection or automatic inspection by setting an inspection route and an inspection period can be carried out according to the monitoring condition.
The combustible and toxic gas comprises hydrogen sulfide, gas, carbon monoxide, carbon dioxide, sulfur dioxide and oxygen.
The performance indexes comprise water leakage conditions, temperature conditions, and change states of inflammable gases and toxic gases.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.
FIG. 1 is a schematic cross-sectional view of a micro utility tunnel according to the present invention;
fig. 2 is a schematic diagram of a health monitoring system principle framework of the micro comprehensive pipe gallery of the present invention.
FIG. 3 is a first formula of natural convection heat dissipation of air and electromagnetic field calculation of cable;
FIG. 4 is a second formula of natural convection heat dissipation of air and electromagnetic field calculation of cable;
fig. 5 is a source current density symbol.
In the figure: 1-a water supply pipe; 2-buckling; 3-a communication cable; 4-a power cable; 5-water leakage monitoring line.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to 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, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
One embodiment of the present invention is shown in fig. 1 to fig. 2, and the present embodiment provides a micro utility tunnel health monitoring system based on multi-physical field coupling analysis, which includes a processing module, a conversion module, a transmission module, and a sensor group.
The sensor group comprises a water leakage sensor, a temperature sensor, a humidity sensor, a water pressure sensor, a water flow sensor and a gas sensor.
The water leakage sensor is used for monitoring the water leakage condition of the water supply pipe 1.
The temperature sensors are used to monitor the temperature of the communication cable 3 and the power cable 4.
The humidity sensor is used for monitoring the humidity of the communication cable 3 and the power cable 4.
The water pressure sensor is used for monitoring the water pressure in the water supply pipe 1.
The water flow sensor is used for monitoring the water flow in the water supply pipe 1.
The gas sensor is used for monitoring toxic gas and inflammable gas inside the micro pipe gallery.
The conversion module is used for converting the information collected by the sensor group into a signal which can be identified by the processing module.
The transmission module is used for transmitting the identifiable signals to the processing module.
The processing module is used for calculating information and outputting a monitoring result.
The conversion module comprises a water leakage demodulation instrument, a temperature demodulation instrument, a humidity demodulation instrument and a gas demodulation instrument.
The water leakage demodulator, the temperature demodulator, the humidity demodulator, the water pressure demodulator, the water flow demodulator and the gas demodulator all support RS485 interfaces.
The water leakage sensor is in communication connection with the water leakage demodulator.
And the temperature sensor is in communication connection with the temperature demodulator.
And the humidity sensor is in communication connection with the humidity demodulator.
And the gas sensor is in communication connection with the gas demodulator.
The processing module comprises a host, an application server, a network server and an application terminal.
The host is in communication connection with the transmission module.
And the application server is in communication connection with the host.
And the application server is in communication connection with the application terminal.
And the network server is in communication connection with the host.
The present embodiment also provides a micro utility tunnel comprising a water supply pipe 1, a communication cable 3, a power cable 4, further comprising a micro utility tunnel according to the preceding claims.
The water leakage sensor is arranged in the water leakage monitoring line 5.
The water leakage monitoring line 5 is arranged on the water supply pipe 1.
The temperature sensor is arranged in the temperature monitoring line.
The temperature monitoring lines are arranged on the communication cable 3 and the power cable 4.
The humidity sensor is arranged in a humidity monitoring line.
The humidity monitoring lines are arranged on the communication cable 3 and the power cable 4.
The water pressure sensor and the water flow sensor are both arranged on the water supply pipe 1.
The gas sensor is arranged on the communication cable 3 and the power cable 4.
The temperature monitoring wire and the humidity monitoring wire are clamped on the power cable 4 through a buckle.
The water supply pipe 1 is provided with a water leakage demodulator.
The communication cable 3 and the power cable 4 are provided with a temperature demodulator, a humidity demodulator, and a gas demodulator.
The water leakage sensor is in communication connection with the water leakage demodulator.
And the temperature sensor is in communication connection with the temperature demodulator.
And the humidity sensor is in communication connection with the humidity demodulator.
And the gas sensor is in communication connection with the gas demodulator.
And a flange is arranged at the pipeline joint of the water supply pipe 1.
The water pressure sensor and the water flow sensor are both arranged on the flange.
The embodiment further provides a method for monitoring the micro comprehensive pipe rack health monitoring system based on multi-physical field coupling analysis, which comprises the following steps:
(1) when the water pressure changes, the water leakage sensor, the water pressure sensor and the water flow sensor monitor the water flow condition, the water leakage demodulator collects real-time data, the real-time data are transmitted to the host through the transmission module to be processed after adjustment, the signals are directly transmitted to the host through the transmission module by the water pressure sensor and the water flow sensor and then transmitted to the network server to be stored, or transmitted to the application end through the application server to obtain a water pressure distribution cloud picture of the water supply pipe 1, the water pressure of the whole section of the water supply pipe 1 is inverted from the water pressure at the two ends of the water supply pipe 1, so that the pressure change of the water supply pipe 1 can be checked in real time, the focus is paid to places with large pressure change, and the water leakage condition of the water supply pipe 1 can be verified.
(2) Temperature sensor, humidity transducer real-time measurement temperature, humidity data, temperature demodulation appearance and humidity demodulation appearance gather real-time data, transmit to the host computer through transmission module after the regulation and handle, transmit to network server saves, perhaps passes through application server transmits to the application, obtains the temperature distribution cloud picture in the utility tunnel, realizes the monitoring of the whole pipe gallery space temperature of the temperature reversal from local single-point to can look over the situation of change of pipe gallery temperature in real time, focus on the region that the temperature is high.
(3) The gas sensor monitors combustible and toxic gas, the gas demodulator collects real-time data, the real-time data are transmitted to the host through the transmission module after being adjusted, and the data are transmitted to the network server for storage, or transmitted to the application end through the application server, and the gas monitoring condition is output.
(4) When the performance index threatening the operation safety changes, the host can transmit early warning information to the application end, remind management and maintenance personnel to pay attention to the safety state in the pipe gallery, and provide maintenance and maintenance suggestions.
(5) The host machine constructs a corresponding three-dimensional model of the miniature comprehensive pipe rack, the measuring points of the sensor are displayed in the application end platform, three-dimensional visualization of pipe rack monitoring is achieved, measuring point information such as measuring point data and change curves is checked in real time, the distribution condition of a temperature field in the pipe rack is checked in real time, the influence of the temperature field on each device in the pipe rack is analyzed, and manual inspection or automatic inspection by setting an inspection route and an inspection period can be carried out according to the monitoring condition.
The combustible and toxic gas comprises hydrogen sulfide, gas, carbon monoxide, carbon dioxide, sulfur dioxide and oxygen.
The performance indexes comprise water leakage conditions, temperature conditions, and change states of inflammable gases and toxic gases.
Another embodiment of the present invention is shown in fig. 1 to 2, and this embodiment provides a micro utility tunnel health monitoring system based on multi-physical field coupling analysis, including a processing module, a conversion module, a transmission module, and a sensor group.
The sensor group comprises a water leakage sensor, a temperature sensor, a humidity sensor, a water pressure sensor, a water flow sensor and a gas sensor.
The water leakage sensor is used for monitoring the water leakage condition of the water supply pipe 1.
The temperature sensors are used to monitor the temperature of the communication cable 3 and the power cable 4.
The humidity sensor is used for monitoring the humidity of the communication cable 3 and the power cable 4.
The water pressure sensor is used for monitoring the water pressure in the water supply pipe 1.
The water flow sensor is used for monitoring the water flow in the water supply pipe 1.
The gas sensor is used for monitoring toxic gas and inflammable gas inside the micro pipe gallery.
The conversion module is used for converting the information collected by the sensor group into a signal which can be identified by the processing module.
The transmission module is used for transmitting the identifiable signals to the processing module.
The processing module is used for calculating information and outputting a monitoring result.
The conversion module comprises a water leakage demodulation instrument, a temperature demodulation instrument, a humidity demodulation instrument and a gas demodulation instrument.
The water leakage demodulator, the temperature demodulator, the humidity demodulator, the water pressure demodulator, the water flow demodulator and the gas demodulator all support RS485 interfaces.
The water leakage sensor is in communication connection with the water leakage demodulator.
And the temperature sensor is in communication connection with the temperature demodulator.
And the humidity sensor is in communication connection with the humidity demodulator.
And the gas sensor is in communication connection with the gas demodulator.
The processing module comprises a host, an application server, a network server and an application terminal.
The host is in communication connection with the transmission module.
And the application server is in communication connection with the host.
And the application server is in communication connection with the application terminal.
And the network server is in communication connection with the host.
The present embodiment also provides a micro utility tunnel comprising a water supply pipe 1, a communication cable 3, a power cable 4, further comprising a micro utility tunnel according to the preceding claims.
The water leakage sensor is arranged in the water leakage monitoring line 5.
The water leakage monitoring line 5 is arranged on the water supply pipe 1.
The temperature sensor is arranged in the temperature monitoring line.
The temperature monitoring lines are arranged on the communication cable 3 and the power cable 4.
The humidity sensor is arranged in a humidity monitoring line.
The humidity monitoring lines are arranged on the communication cable 3 and the power cable 4.
The water pressure sensor and the water flow sensor are both arranged on the water supply pipe 1.
The gas sensor is arranged on the communication cable 3 and the power cable 4.
The temperature monitoring wire and the humidity monitoring wire are clamped on the power cable 4 through a buckle.
The water supply pipe 1 is provided with a water leakage demodulator.
The communication cable 3 and the power cable 4 are provided with a temperature demodulator, a humidity demodulator, and a gas demodulator.
The water leakage sensor is in communication connection with the water leakage demodulator.
And the temperature sensor is in communication connection with the temperature demodulator.
And the humidity sensor is in communication connection with the humidity demodulator.
And the gas sensor is in communication connection with the gas demodulator.
And a flange is arranged at the pipeline joint of the water supply pipe 1.
The water pressure sensor and the water flow sensor are both arranged on the flange.
The embodiment further provides a method for monitoring the micro comprehensive pipe rack health monitoring system based on multi-physical field coupling analysis, which comprises the following steps:
(1) when the water pressure changes, the water leakage sensor, the water pressure sensor and the water flow sensor monitor the water flow condition, the water leakage demodulator collects real-time data, the real-time data are transmitted to the host through the transmission module to be processed after adjustment, the signals are directly transmitted to the host through the transmission module by the water pressure sensor and the water flow sensor and then transmitted to the network server to be stored, or transmitted to the application end through the application server to obtain a water pressure distribution cloud picture of the water supply pipe 1, the water pressure of the whole section of the water supply pipe 1 is inverted from the water pressure at the two ends of the water supply pipe 1, so that the pressure change of the water supply pipe 1 can be checked in real time, the focus is paid to places with large pressure change, and the water leakage condition of the water supply pipe 1 can be verified in.
(2) Temperature sensor, humidity transducer real-time measurement temperature, humidity data, temperature demodulation appearance and humidity demodulation appearance gather real-time data, transmit to the host computer through transmission module after the regulation and handle, transmit to network server saves, perhaps passes through application server transmits to the application, obtains the temperature distribution cloud picture in the utility tunnel, realizes the monitoring of the whole pipe gallery space temperature of the temperature reversal from local single-point to can look over the situation of change of pipe gallery temperature in real time, focus on the region that the temperature is high.
(3) The gas sensor monitors combustible and toxic gas, the gas demodulator collects real-time data, the real-time data are transmitted to the host through the transmission module after being adjusted, and the data are transmitted to the network server for storage, or transmitted to the application end through the application server, and the gas monitoring condition is output.
(4) When the performance index threatening the operation safety changes, the host can transmit early warning information to the application end, remind management and maintenance personnel to pay attention to the safety state in the pipe gallery, and provide maintenance and maintenance suggestions.
(5) The host machine constructs a corresponding three-dimensional model of the miniature comprehensive pipe rack, the measuring points of the sensor are displayed in the application end platform, three-dimensional visualization of pipe rack monitoring is achieved, measuring point information such as measuring point data and change curves is checked in real time, the distribution condition of a temperature field in the pipe rack is checked in real time, the influence of the temperature field on each device in the pipe rack is analyzed, and manual inspection or automatic inspection by setting an inspection route and an inspection period can be carried out according to the monitoring condition.
The transmission module transmits the information acquired by the sensor to a host, and the data is screened and protected by a firewall, transmitted to a network server through a core switch for storage, or transmitted to an application end through the application server.
The application end comprises a desktop computer, a notebook computer, a large screen, a PAD and a mobile phone.
The combustible and toxic gas comprises hydrogen sulfide, gas, carbon monoxide, carbon dioxide, sulfur dioxide and oxygen.
The performance indexes comprise water leakage conditions, temperature conditions, and change states of inflammable gases and toxic gases.
The flow of the host computer to the coupling analysis of the multiple physical fields of the micro comprehensive pipe gallery comprises:
(1) analyzing the heating and radiating principles of the micro comprehensive pipe gallery;
(2) establishing a micro comprehensive pipe gallery model;
(3) loading the current of each voltage class cable in normal operation;
(4) performing three-field coupling analysis on an electromagnetic field, a temperature field and a flow field;
(5) obtaining a temperature distribution cloud picture and a water pressure distribution cloud picture;
(6) and (5) monitoring key parts intensively.
The micro comprehensive pipe gallery can be regarded as a closed environment under the condition of not strengthening ventilation, and the heat dissipation mode of the micro comprehensive pipe gallery is mainly air natural convection heat dissipation. When power equipment in the comprehensive pipe rack runs, the current can generate an electromagnetic field, the cutting magnetic force lines can generate heat, the heat is emitted, and the temperature is increased. The formula for natural convection heat dissipation of air and calculation of electromagnetic field of cable is shown in fig. 3 to 4.
In the formula, vx、νyIs the velocity component of the air in the x, y directions αvIs the coefficient of air expansion; t is the solved air temperature; t is∞Is a temperature value at a steady state, mu is a viscosity coefficient of air, k is a thermal conductivity of air, ▽2Is the laplacian operator; k is a radical ofx、kyRespectively, the anisotropy parameters of the thermal conductivity.
▽ is Hamiltonian, i.e. differential operator of vector, σ is conductivity of conductor region, symbol shown in FIG. 5 is source current density, i.e. current density loaded by cable core, J is current density of conductor region, V1The type eddy current area, namely the cable steel bracket, can generate induction eddy current due to the influence of the alternating magnetic field; v2The power supply region is a cable core of the cable, and running current passes through the power supply region; and omega is a conductor area which generates electromagnetic loss in calculation, namely a cable core and a steel bracket.
The invention integrates the high and new technologies such as a sensor, a computer, communication, a network and the like, and aiming at the micro comprehensive pipe gallery mainly provided with the water supply pipe, the power cable and the communication cable, various index parameters of the micro comprehensive pipe gallery are monitored in real time, and related monitoring indexes can be analyzed more carefully and more closely to the real condition through multi-physical field coupling. The system can be really used for health monitoring and running state evaluation of the micro comprehensive pipe gallery for a long time, and meets the requirement of operation and maintenance management of the micro comprehensive pipe gallery.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A micro comprehensive pipe gallery health monitoring system based on multi-physical field coupling analysis is characterized by comprising a processing module, a conversion module, a transmission module and a sensor group;
the sensor group comprises a water leakage sensor, a temperature sensor, a humidity sensor, a water pressure sensor, a water flow sensor and a gas sensor;
the water leakage sensor is used for monitoring the water leakage condition of the water supply pipe;
the temperature sensor is used for monitoring the temperature of the communication cable and the power cable;
the humidity sensor is used for monitoring the humidity of the communication cable and the power cable;
the water pressure sensor is used for monitoring the water pressure in the water supply pipe;
the water flow sensor is used for monitoring the water flow in the water supply pipe;
the gas sensor is used for monitoring toxic gas and inflammable gas inside the micro pipe gallery;
the conversion module is used for converting the information collected by the sensor group into a signal which can be identified by the processing module;
the transmission module is used for transmitting the identifiable signals to the processing module;
the processing module is used for calculating information and outputting a monitoring result.
2. The multi-physics coupling analysis-based micro utility tunnel health monitoring system of claim 1,
the conversion module comprises a water leakage demodulator, a temperature demodulator, a humidity demodulator and a gas demodulator;
the water leakage sensor is in communication connection with the water leakage demodulator;
the temperature sensor is in communication connection with the temperature demodulator;
the humidity sensor is in communication connection with the humidity demodulator;
and the gas sensor is in communication connection with the gas demodulator.
3. The multi-physics coupling analysis-based micro utility tunnel health monitoring system of claim 2,
the processing module comprises a host, an application server, a network server and an application end;
the host is in communication connection with the transmission module;
the application server is in communication connection with the host;
the application server is in communication connection with the application terminal;
and the network server is in communication connection with the host.
4. A mini utility tunnel comprising a water supply pipe, communication cables, power cables, further comprising the mini utility tunnel of claim 1;
the water leakage sensor is arranged in the water leakage monitoring line;
the water leakage monitoring line is arranged on the water supply pipe;
the temperature sensor is arranged in a temperature monitoring line;
the temperature monitoring lines are arranged on the communication cable and the power cable;
the humidity sensor is arranged in a humidity monitoring line;
the humidity monitoring line is arranged on the communication cable and the power cable;
the water pressure sensor and the water flow sensor are both arranged on the water supply pipe;
the gas sensor is disposed on the communication cable and the power cable.
5. The micro utility tunnel of claim 4,
the temperature monitoring wire and the humidity monitoring wire are clamped on the power cable through a buckle.
6. The micro utility tunnel of claim 4,
the water supply pipe is provided with a water leakage demodulator;
the communication cable and the power cable are provided with a temperature demodulator, a humidity demodulator and a gas demodulator;
the water leakage sensor is in communication connection with the water leakage demodulator;
the temperature sensor is in communication connection with the temperature demodulator;
the humidity sensor is in communication connection with the humidity demodulator;
and the gas sensor is in communication connection with the gas demodulator.
7. The micro utility tunnel of claim 6,
a flange is arranged at the joint of the water supply pipe;
the water pressure sensor and the water flow sensor are both arranged on the flange.
8. A method of monitoring using the multi-physics coupling analysis based mini-utility tunnel health monitoring system of claim 3, comprising the steps of:
(1) when the water flow has pressure change, the water leakage sensor, the water pressure sensor and the water flow sensor monitor the water flow condition, the water leakage demodulator collects real-time data, the real-time data are transmitted to the host machine for processing through the transmission module after being adjusted, the signals are directly transmitted to the host machine for processing through the transmission module by the water pressure sensor and the water flow sensor, and then are transmitted to the network server for storage, or are transmitted to an application end through the application server, a water pressure distribution cloud picture of the water supply pipe is obtained, the water pressure of the whole section of the water supply pipe is inverted from the water pressure at two ends of the water supply pipe, so that the pressure change of the water supply pipe can be checked in real time, the focus is paid to places with large pressure change, and the water leakage condition;
(2) the temperature sensor and the humidity sensor measure temperature and humidity data in real time, the temperature demodulator and the humidity demodulator acquire real-time data, the real-time data are transmitted to the host through the transmission module after being adjusted and are transmitted to the network server for storage, or the data are transmitted to an application end through the application server, a temperature distribution cloud picture in the comprehensive pipe rack is obtained, monitoring of the space temperature of the whole pipe rack from temperature inversion of a local single point is achieved, therefore, the change condition of the temperature of the pipe rack can be checked in real time, and the temperature sensor focuses on areas with high temperature;
(3) the gas sensor monitors combustible and toxic gas, the gas demodulator collects real-time data, the real-time data are transmitted to the host computer for processing through the transmission module after being regulated, and the data are transmitted to the network server for storage, or are transmitted to an application end through the application server to output gas monitoring conditions;
(4) when the performance index threatening the operation safety changes, the host transmits early warning information to the application end, reminds management and maintenance personnel to pay attention to the safety state in the pipe gallery and provides a maintenance and maintenance suggestion;
(5) the method comprises the steps that a host machine constructs a corresponding three-dimensional model of the miniature comprehensive pipe rack, measuring points of a sensor are displayed in an application end platform, three-dimensional visualization of pipe rack monitoring is achieved, measuring point information such as measuring point data and change curves is checked in real time, the distribution condition of a temperature field in the pipe rack is checked in real time, the influence of the temperature field on each device in the pipe rack is analyzed, and manual inspection or automatic inspection by setting an inspection route and an inspection period is carried out according to the monitoring condition.
9. The method for monitoring using the micro utility tunnel health monitoring system based on multi-physics coupling analysis of claim 8,
the combustible and toxic gas comprises hydrogen sulfide, gas, carbon monoxide, carbon dioxide, sulfur dioxide and oxygen;
the performance indexes comprise water leakage conditions, temperature conditions, and change states of inflammable gases and toxic gases.
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