CN110671610A - Monitoring system and monitoring method for heat supply pipeline - Google Patents
Monitoring system and monitoring method for heat supply pipeline Download PDFInfo
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- CN110671610A CN110671610A CN201911031027.6A CN201911031027A CN110671610A CN 110671610 A CN110671610 A CN 110671610A CN 201911031027 A CN201911031027 A CN 201911031027A CN 110671610 A CN110671610 A CN 110671610A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
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- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
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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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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
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Abstract
The embodiment of the invention discloses a monitoring system and a monitoring method of a heat supply pipeline, wherein the monitoring system of the heat supply pipeline comprises: the monitoring module of heat supply pipeline includes: the temperature detection module is used for measuring the temperature of the pipeline layer and the temperature of the insulating layer; the pressure detection module is used for detecting the pressure of the pipeline layer; the flow detection module is used for detecting the flow of the pipeline layer; the leakage detection module is used for detecting the liquid content of the insulating layer; the data processing module is used for acquiring whether heating faults exist in the water supply and return water of the pipeline layer according to the temperature of the pipeline layer, judging water inlet pressure faults and/or corrosion faults of the pipeline layer according to the pressure of the pipeline layer, the flow of the pipeline layer and the liquid content of the insulating layer, judging whether leakage faults occur in the pipeline layer and/or the protective layer according to the temperature of the insulating layer, the pressure of the pipeline layer and the liquid content of the insulating layer, and positioning leakage positions. The technical scheme provided by the embodiment of the invention can solve the problem of higher cost of fault detection of the existing direct-buried heat supply pipeline.
Description
Technical Field
The embodiment of the invention relates to the technical field of heat supply pipeline detection, in particular to a monitoring system and a monitoring method for a heat supply pipeline.
Background
The direct-buried heat supply pipeline is directly buried underground, the pipeline divides into three-layer altogether, pipeline layer, heat insulation layer and protective layer, wherein gives the return water and circulates in the pipeline layer, and the heat insulation layer prevents that the heat runs off, and the protective layer is used for protecting the pipeline not receive external pressure to destroy and soil corrosion. In the working process of the heat supply pipeline, the protective layer and the insulating layer may have a fault damaged by external force, and the pipeline layer may have conditions of cracks, corrosion, impurity precipitation and the like, so that the interruption of the heat supply process or the reduction of the heat supply effect is caused, and the set requirement of a heat supply system cannot be met.
At present domestic heat supply pipeline's monitoring most still artifical monitoring, in case go wrong, light then lead to the user heat supply unusual, serious can take place the accident that endangers personal safety, and the trouble all needs experienced technical staff to make accurate judgement in the shortest time what kind of trouble takes place for whatever kind of place, and manual judgement can directly lead to the pipeline of large tracts of land to be dug out, protective layer and heat preservation are destroyed: on the one hand, the heating of the user is affected; on the other hand, a thermal power company can spend a large amount of manpower and material resources to investigate fault locations and reasons, so that the economic cost is high, and certain social influence can be caused on related aspects such as traffic of the city.
Disclosure of Invention
The invention provides a monitoring system and a monitoring method for a heat supply pipeline, which aim to solve the problem that the existing direct-buried heat supply pipeline has higher fault detection cost.
In a first aspect, an embodiment of the present invention provides a monitoring system for a heat supply pipeline, where the heat supply pipeline sequentially includes a pipeline layer, an insulating layer, and a protective layer from inside to outside; the monitoring module of heat supply pipeline includes: the device comprises a temperature detection module, a pressure detection module, a flow detection module, a leakage detection module and a data processing module;
the temperature detection module is arranged on the pipeline layer and the insulating layer and used for measuring the temperature of the pipeline layer and the temperature of the insulating layer; the pressure detection module is arranged at the joint of the pipeline layers adjacent to the heat supply pipeline and used for detecting the pressure of the pipeline layers; the flow detection module is arranged at the joint of the pipeline layers adjacent to the heat supply pipeline and used for detecting the flow of the pipeline layers; the leakage detection module is arranged on the insulating layer and used for detecting the liquid content of the insulating layer;
the data processing module is used for acquiring whether heating faults exist in the supply water and the return water of the pipeline layer according to the temperature of the pipeline layer, and judging water inlet pressure faults and/or corrosion faults of the pipeline layer according to the pressure of the pipeline layer, the flow of the pipeline layer and the liquid content of the insulating layer; the data processing module is also used for judging whether the pipeline layer and/or the protective layer has leakage faults or not according to the temperature of the insulating layer, the pressure of the pipeline layer and the liquid content of the insulating layer, and positioning a leakage position.
In a second aspect, an embodiment of the present invention further provides a method for monitoring a heat supply pipeline, which is applicable to the system for monitoring a heat supply pipeline provided in any embodiment of the present invention, where the method for monitoring a heat supply pipeline includes:
detecting the temperature of the pipeline layer and the temperature of the insulating layer through a temperature detection module; detecting the pressure of the pipeline layer through a pressure detection module; detecting the flow of the pipeline layer through a flow detection module; detecting the liquid content of the insulating layer through a leakage detection module;
acquiring whether heating faults exist in the feedwater water or the backwater of the pipeline layer according to the temperature of the pipeline layer, and judging water inlet pressure faults or corrosion faults of the pipeline layer according to the pressure of the pipeline layer, the flow of the pipeline layer and the liquid content of the insulating layer; and judging whether the pipeline layer and/or the protective layer has leakage faults or not according to the temperature of the insulating layer, the pressure of the pipeline layer and the liquid content of the insulating layer, and positioning the leakage position.
The scheme provided by the embodiment of the invention is that the monitoring system of the heat supply pipeline detects the pipeline layer temperature and the insulating layer temperature of the heat supply pipeline through the temperature detection module, detects the pipeline layer pressure through the pressure detection module, detects the pipeline layer flow through the flow detection module, detects the liquid content of the insulating layer through the leakage detection unit, and obtains the heating fault of the supply and return water of the heat supply pipeline, the pressure fault of a water inlet and the corrosion blockage fault of the pipeline layer through the parameters of the pipeline layer temperature, the insulating layer temperature, the pipeline layer pressure, the pipeline layer flow, the liquid content of the insulating layer and the like through the data processing module, and can also obtain the leakage fault of the pipeline layer and the protective layer and position the leakage fault, the detection system of the heat supply pipeline can monitor and position various faults of the heat supply pipeline in real time, and does not need to spend a large amount of manpower and material resources to, practice thrift the detection cost to this heat supply pipeline's detecting system's fault detection and location rate of accuracy are higher, are convenient for lock the trouble fast, strive for the time to salvage and remedy, and this proposed heat supply pipeline's detecting system simple to operate, the cost is lower, is convenient for carry out a large amount of settings at heat supply pipeline place circuit, in order to reliably maintain heat supply pipeline.
Drawings
Fig. 1 is a schematic structural diagram of a monitoring system for a heat supply pipeline according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a heat supply pipeline provided by an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another heat supply pipeline monitoring system provided by the embodiment of the invention;
fig. 4 is a schematic flow chart of a method for monitoring a heat supply pipeline according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Among the prior art, the heat supply pipeline buries in the underground, can not monitor it in real time to the heat supply pipeline includes pipeline layer, heat insulation layer and protective layer, and each layer all probably breaks down, and when the manual work was measured the heat supply pipeline, need dig out the heat supply pipeline to probably destroy protective layer and heat insulation layer and overhaul the pipeline layer, not only detect the cost higher, need the heat supply pipeline to stop the heat supply moreover, influence user's normal use. And the problem of inaccurate fault positioning possibly exists due to inaccurate manual judgment, so that the excavated area of the heat supply pipeline is too large, and property loss is caused.
In order to solve the above problems, an embodiment of the present invention provides a monitoring system for a heat supply pipeline, wherein the heat supply pipeline sequentially includes a pipeline layer, an insulating layer, and a protective layer from inside to outside; the monitoring module of heat supply pipeline includes: the device comprises a temperature detection module, a pressure detection module, a flow detection module, a leakage detection module and a data processing module;
the temperature detection module is arranged on the pipeline layer and the insulating layer and used for measuring the temperature of the pipeline layer and the temperature of the insulating layer; the pressure detection module is arranged at the joint of the pipeline layers of the adjacent heat supply pipelines and used for detecting the pressure of the pipeline layers; the flow detection module is arranged at the joint of the pipeline layers of the adjacent heat supply pipelines and used for detecting the flow of the pipeline layers; the leakage detection module is arranged on the insulating layer and used for detecting the liquid content of the insulating layer;
the data processing module is used for acquiring whether the heating fault exists in the water supply and return water of the pipeline layer according to the temperature of the pipeline layer, and judging the water inlet pressure fault and the corrosion fault of the pipeline layer according to the pressure of the pipeline layer, the flow of the pipeline layer and the liquid content of the insulating layer; the data processing module is also used for judging whether the pipeline layer and the protective layer have leakage faults or not according to the temperature of the insulating layer, the pressure of the pipeline layer and the liquid content of the insulating layer, and positioning the leakage position.
The monitoring system of the heat supply pipeline provided by the embodiment of the invention detects the pipeline layer temperature and the insulating layer temperature of the heat supply pipeline through the temperature detection module, detects the pipeline layer pressure through the pressure detection module, detects the pipeline layer flow through the flow detection module, detects the liquid content of the insulating layer through the leakage detection unit, acquires the heating fault of the supply and return water of the heat supply pipeline, the pressure fault of a water inlet and the corrosion blockage fault of the pipeline layer through the parameters of the pipeline layer temperature, the insulating layer temperature, the pipeline layer pressure, the pipeline layer flow, the liquid content of the insulating layer and the like through the data processing module, can acquire the leakage fault of the pipeline layer and the protective layer, can position the leakage fault, can monitor and position various faults of the heat supply pipeline in real time, does not need to spend a large amount of manpower and material resources to troubleshoot fault places and reasons, practice thrift the detection cost to this heat supply pipeline's detecting system's fault detection and location rate of accuracy are higher, are convenient for lock the trouble fast, strive for the time to salvage and remedy, and this proposed heat supply pipeline's detecting system simple to operate, the cost is lower, is convenient for carry out a large amount of settings at heat supply pipeline place circuit, in order to reliably maintain heat supply pipeline.
On the basis of the above embodiment, referring to fig. 1, fig. 1 is a schematic structural diagram of a monitoring system of a heat supply pipeline according to an embodiment of the present invention, referring to fig. 2, fig. 2 is a schematic structural diagram of a heat supply pipeline according to an embodiment of the present invention, and the heat supply pipeline sequentially includes three layers, namely a pipeline layer 21, an insulating layer 22 and a protective layer 23, from inside to outside. Wherein, pipeline layer 21 generally comprises the steel pipe for the circulation of the return water of giving of user's heat supply in pipeline layer 21, insulating layer 22 generally comprises polyurethane rigid foam, is used for preventing the heat loss in pipeline layer 21, and protective layer 23 generally can comprise high density polyethylene, is used for pipeline layer 21 and insulating layer 22 not receive external pressure destruction and soil corrosion. Whether the temperature, pressure, flow and other parameters of the supply water and the return water in the pipeline layer 21 are normal or not determines whether a heat supply system meets the set heat supply requirement or not, the protective layer 23 and the insulating layer 2 are damaged by external force, whether the pipeline layer 21 has cracks or not, the corrosion degree, impurity precipitation and other factors can influence the parameters, and therefore various faults of the heat supply pipeline can be estimated according to changes of the parameters.
Specifically, referring to fig. 1, the monitoring system for the heat supply pipeline includes a temperature detection module 11, a pressure detection module 12, a flow detection module 13, a leakage detection module 14, and a data processing module 15. The temperature detection module 11 is disposed in the pipe layer 21 and the insulating layer 22, for example, the temperature detection module 11 includes a plurality of temperature sensors, a part of the temperature sensors are disposed on the inner wall of the pipe layer 21 for measuring the pipe layer temperature (the temperature of the supply water in the pipe layer 21), and the remaining temperature sensors are disposed in the interlayer of the insulating layer 22 for measuring the insulating layer temperature. The pressure measuring module 12 is arranged at the joint of the adjacent heat supply pipelines, namely, the joint of the pipeline layers of the adjacent heat supply pipelines, and is used for detecting the pressure of the pipeline layers (the pressure of the return water in the pipeline layer 21), and the flow detecting module 13 is arranged at the joint of the pipeline layers of the adjacent heat supply pipelines and is used for detecting the flow of the pipeline layers (the flow of the return water in the pipeline layer 21). Optionally, the pressure detection module 12 and the flow detection module 13 may be installed at a flange connection between the heat supply pipeline and the heat supply pipeline. The leak detection module 14 is provided in the insulating layer, and when neither the pipe layer 21 nor the protective layer 23 is damaged, the insulating layer 22 does not contain liquid, but when the pipe layer 21 is damaged, the supply water flows into the insulating layer 22, and when the protective layer 23 is damaged, the moisture in the soil also invades into the insulating layer 22, so that the liquid content in the insulating layer rises. The leak detection module 14 is used to obtain whether the pipe layer 21 and the protective layer 23 are broken by the insulating layer liquid content. And the data processing module 15 is respectively electrically connected with the temperature detection module 11, the pressure detection module 12, the flow detection module 13 and the leakage detection module 14, and is used for receiving the parameter values acquired by the detection modules, performing analog-to-digital conversion on the parameter values, calculating and processing the parameter values, and comparing the parameter values with a standard threshold value to judge whether the heat supply pipeline has a fault. Specifically, the data processing module 15 obtains whether the water supply and return water of the pipeline layer 21 has a heating fault according to the pipeline layer temperature measured by the temperature detection module 11, and determines a water inlet pressure fault of the water supply and return water, and a corrosion fault or a blockage fault of the pipeline layer 21 according to the pipeline layer pressure measured by the pressure detection module 12, the pipeline layer flow measured by the flow detection module 13, and the insulating layer liquid content measured by the leakage detection module 14. In addition, the data processing module 15 is further configured to determine whether a leakage fault occurs in the pipeline layer 21 and the protective layer 23 according to the insulating layer temperature measured by the temperature detection module 11, the pipeline layer pressure measured by the pressure detection module 12, and the insulating layer liquid content measured by the leakage detection module 14, and locate a leakage position. Therefore, each fault of the heat supply pipeline can be detected according to the monitoring system of the heat supply pipeline, the fault detection efficiency is improved, the labor and material cost of fault detection is reduced, and the positioning accuracy of the fault is improved.
Optionally, the leak detection module 14 may include: at least one positioning sensor; the positioning sensor is used for changing the impedance of the positioning sensor according to the content of the liquid, so that the data processing module judges whether the pipeline layer and/or the protective layer leaks or not according to the impedance of the positioning sensor. The positioning sensor is a sensor component with impedance value changing along with the change of liquid content. For example, the nichrome wire and the tinned copper wire embedded in the insulating layer serve as the wires of the positioning sensor, the leaked return water or liquid in the soil can change the impedance of the positioning sensor, and further change the current and voltage in the loop of the positioning sensor, so that the leakage detection module 14 receives the changed voltage signal to judge whether leakage faults exist in the pipeline layer and the protective layer, and the leakage faults are positioned according to the setting position of the leakage detection module 14. Optionally, the positioning accuracy of leak detection module 14 may be in the range of 1 meter to facilitate troubleshooting.
Optionally, referring to fig. 3, fig. 3 is a schematic structural diagram of another monitoring system for a heat supply pipeline according to an embodiment of the present invention, where the monitoring system for a heat supply pipeline may further include: the alarm module 16 is electrically connected with the data processing module 15; the alarm module 16 is used for giving an alarm when the data processing module 15 judges that the heating fault, the water inlet pressure fault, the corrosion fault and/or the leakage fault occur to the heat supply pipeline. When the data processing module 15 judges the heating fault, the water inlet pressure fault, the corrosion fault and the leakage fault according to the parameter values, in order to facilitate a user to timely know the fault condition and the fault position, the alarm module 16 can send an alarm, so that a repair measure can be timely taken, property loss caused by the fault is reduced, and personal safety is improved. Optionally, the alarm module 16 may include an audible and visual alarm, and when a local monitoring region of the monitoring system of the heat supply pipeline fails, for example, a pipeline layer leaks when reaching an early warning level, the pipeline is damaged by ground construction, and a temperature and pressure change reaches an abnormal alarm state, the alarm module sends out an alarm sound through the audible and visual alarm, or a signal lamp is set in a flashing manner.
Optionally, with continued reference to fig. 3, the monitoring system of the heating pipeline may further comprise: a communication module 17 electrically connected to the data processing module 15; the communication module 17 is used for sending the pipe layer temperature, the insulation layer temperature, the pipe layer pressure, the pipe layer flow and/or the insulation layer liquid content to a central monitoring system. Data processing module 15 still is connected with communication module 17 electricity for the parameter value with each detection module's measurement passes through communication module 17 and sends to central monitoring system, makes other users can long-rangely acquire each parameter data, thereby makes other users carry out remote control to this heating pipeline's monitoring system, improves the monitoring efficiency to heating pipeline.
Optionally, the communication module 17 may be a fifth generation mobile communication technology (5th generation mobile networks, 5G) communication module 17, and the full coverage and low latency of the network signal of the 5G communication module 17 reduce communication cost, thereby greatly improving communication efficiency and communication quality. The internet of things communication technology based on the 5G communication module 17 can enable the data of the data processing module 15 to be wirelessly transmitted to a central monitoring system, and a network cable does not need to be laid independently, so that the communication effect is better even if the heat supply pipeline is in a remote area.
Optionally, with continued reference to fig. 3, the monitoring system of the heating pipeline may further comprise: a display 18; the device is used for displaying the temperature of the pipeline layer, the temperature of the insulating layer, the pressure of the pipeline layer, the flow of the pipeline layer and/or the liquid content of the insulating layer, and is convenient for locally monitoring the heat supply pipeline. In addition, various function keys are provided on the display 18 to facilitate a user to query real-time data and historical data through the function keys. Also, the display 18 may display alarm information. Alternatively, the Display 18 may be a Liquid Crystal Display (LCD) 18, a Light Emitting Diode (LED) Display 18, or other types of displays 18, such as a Cathode Ray Tube (CRT), and the like, and the type of the Display 18 is not limited in this embodiment.
Optionally, the monitoring system of the heat supply pipeline may further include: a battery management module 19; the battery management comprises a solar battery pack and a standby battery pack and is used for supplying power for a monitoring system of the heat supply pipeline.
Optionally, the monitoring system of the heat supply pipeline may further include: a housing protection module 20; the housing protection module 20 is configured with an air cooling system and a heating system for protecting the monitoring system of the heat supply pipeline. The monitoring system of heat supply pipeline can also include shell protection module 20, shell protection module 20 can be outdoor box, a setting such as protection against tide rust-resistant protection against insects mouse is carried out to the monitoring system of heat supply pipeline, and shell protection module 20 disposes forced air cooling system and heating system, then in the lower environment of temperature, accessible heating system guarantees the normal work of the monitoring system of heat supply pipeline, in the higher environment of temperature, accessible forced air cooling system prevents that the monitoring system of heat supply pipeline from taking place to damage because of overheated.
On the basis of the embodiment, the monitoring system of the heat supply pipeline adopts a high-performance temperature detection module, a pressure detection module, a flow detection module, a leakage detection module and an advanced data processing module, and has the characteristics of high measurement precision, wide measurement range, stable system and the like; the monitoring system of heat supply pipeline adopts solar energy power supply and passes through rechargeable battery as backup battery, through 5G communication module with data transmission to central monitoring system, whole journey need not cable conductor and communication line, has that transmission rate is fast, and data is reliable, characteristics such as maintainability is strong. The data processing module adopts a corresponding algorithm to calculate the temperature of the pipeline layer, the temperature of the insulating layer, the pressure of the pipeline layer, the flow of the pipeline layer and the content of the liquid in the insulator, and judges whether the working conditions of the pipeline layer are normal in a heat supply period and a non-heat supply period, and the data processing module has the characteristics of high accuracy, reliable measurement and the like; the monitoring system of the heat supply pipeline can monitor the heat supply pipeline parameters of various pipeline layers on line, data can be digitally displayed on site in a display, networking can be realized, communication with a central monitoring system can be realized, alarm data can be set, the installation is convenient, and the cost is low.
Optionally, the monitoring system of whole heat supply pipeline all sets up in heat supply pipeline's joint department to can all install the monitoring system of a heat supply pipeline at the same distance of every interval, thereby the user carries out real-time supervision to heat supply pipeline.
Based on the same conception, the embodiment of the invention also provides a monitoring method of the heat supply pipeline. Fig. 4 is a schematic flow chart of a method for monitoring a heat supply pipeline according to an embodiment of the present invention, and as shown in fig. 4, the method of the embodiment includes the following steps:
step S110, detecting the temperature of a pipeline layer and the temperature of an insulating layer through a temperature detection module; detecting the pressure of the pipeline layer through a pressure detection module; detecting the flow of the pipeline layer through a flow detection module; and detecting the liquid content of the insulating layer by a leakage detection module.
Step S120, acquiring whether the heating fault exists in the feedwater water of the pipeline layer or not according to the temperature of the pipeline layer, and judging the water inlet pressure fault or the corrosion fault of the pipeline layer according to the pressure of the pipeline layer, the flow of the pipeline layer and the liquid content of the insulating layer; and judging whether the pipeline layer and the protective layer have leakage faults or not according to the temperature of the insulating layer, the pressure of the pipeline layer and the liquid content of the insulating layer, and positioning the leakage position.
In the embodiment of the invention, the monitoring system of the heat supply pipeline detects the pipeline layer temperature and the insulating layer temperature of the heat supply pipeline through the temperature detection module, detects the pipeline layer pressure through the pressure detection module, detects the pipeline layer flow through the flow detection module, detects the liquid content of the insulating layer through the leakage detection unit, and obtains the heating fault of the water supply and return water of the heat supply pipeline, the pressure fault of a water inlet and the corrosion blockage fault of the pipeline layer through the parameters of the pipeline layer temperature, the insulating layer temperature, the pipeline layer pressure, the pipeline layer flow, the liquid content of the insulating layer and the like through the data processing module, can also obtain the leakage fault of the pipeline layer and the protective layer, and can position the leakage fault, can monitor and position various faults of the heat supply pipeline in real time, does not need to spend a large amount of manpower and material resources to troubleshoot the fault place, practice thrift the detection cost to this heat supply pipeline's detecting system's fault detection and location rate of accuracy are higher, are convenient for lock the trouble fast, strive for the time to salvage and remedy, and this proposed heat supply pipeline's detecting system simple to operate, the cost is lower, is convenient for carry out a large amount of settings at heat supply pipeline place circuit, in order to reliably maintain heat supply pipeline.
On the basis of the above embodiment, obtaining whether the supply water and the return water of the pipeline layer have a heating fault according to the temperature of the pipeline layer may specifically include: when the temperature of the pipeline layer is greater than a first heating temperature threshold value, judging that the heating temperature of the supplied and returned water is too high; and when the temperature of the pipeline is less than the second heating temperature threshold value, judging that the heating temperature of the returned water is too low.
In the circulation process of the water supply and return, the heating temperature of the water supply and return is not suitable to be too high so as to prevent the heat supply pipeline from being damaged and harm the personal safety of users, a standard range can be set for the heating temperature of the water supply and return, namely the range between a second heating temperature threshold and a first heating temperature threshold, wherein the second heating temperature threshold is smaller than the first heating temperature, and when the heating temperature of the water supply and return is not in the range, the situation that the water supply and return is abnormal in heating is indicated, and heating faults are generated. When the heating temperature is higher than the first heating temperature threshold value, the heating temperature of the water supply and return is over high, and an overheating fault is generated. Carry out the heat transfer between return water and the pipeline layer, pipeline layer temperature is the temperature for the return water promptly, and then this embodiment all compares through pipeline layer temperature and first heating temperature threshold value and second heating temperature threshold value to judge heating fault.
Optionally, the method for determining the water inlet pressure fault or the corrosion fault of the pipeline layer according to the pipeline layer pressure, the pipeline layer flow and the insulating layer liquid content includes: when the pressure of the pipeline layer is greater than a first pressure threshold value and the flow of the pipeline layer is greater than a first flow threshold value, judging that the pressure of the water inlet is too high; when the pressure of the pipeline layer is lower than a second pressure threshold value, the flow of the pipeline layer is lower than a second flow threshold value, and the liquid content of the insulating layer is smaller than a first humidity threshold value, judging that the pressure of the water inlet is too low; and when the pressure of the pipeline layer is greater than a third pressure threshold value and the flow of the pipeline layer is less than a third flow threshold value, judging that the corrosion fault occurs in the pipeline layer.
The heating threshold exists in the heating process, the pressure and flow value of the supply water and the return water also need to be controlled, and the supply water and the return water are prevented from damaging the pipe wall of the pipeline layer. In this embodiment, a standard pressure range is provided for the return water: a range between a second pressure threshold and a first pressure threshold, the first pressure threshold being greater than the second pressure threshold; the return water is not provided with a standard flow range: a range between the second flow threshold and a first flow threshold, the first flow threshold being greater than the second flow threshold. When the pressure of the pipeline layer is greater than the first pressure threshold value and the flow of the pipeline layer is greater than the first flow threshold value, namely the pressure of the pipeline layer and the flow of the pipeline layer are both excessive, it is indicated that a water inlet pressure fault exists, and the pressure of the water inlet is excessive, so that the pumping speed of the feed water and the return water of the water inlet can be controlled. When the pipe layer pressure is lower than the second pressure threshold value and the pipe layer flow is lower than the second flow threshold value, that is, when both the pipe layer pressure and the pipe layer flow are too low, the situation that the water inlet pressure is too low or the leakage fault of the pipe layer breakage may exist, the liquid content of the insulating layer needs to be detected, if the liquid content of the insulating layer is less than the fault humidity threshold value (first humidity threshold value), it is indicated that the leakage fault does not exist in the pipe layer, and the water inlet pressure is too low.
Optionally, judging whether a leakage fault occurs in the pipeline layer and/or the protective layer according to the temperature of the insulating layer, the pressure of the pipeline layer and the liquid content of the insulating layer, and locating a leakage position, including: when the temperature of the pipeline layer is reduced, the temperature of the insulating layer is increased, and the liquid content of the insulating layer is greater than a first humidity threshold value, judging that the pipeline layer has a leakage fault, and positioning a leakage position according to the position of the leakage detection module; when the pipeline layer has a leakage fault, judging the leakage degree of the pipeline layer according to the pressure of the pipeline layer and the reduction speed of the flow of the pipeline layer; and when the temperature of the pipeline layer is unchanged, the temperature of the insulating layer is changed, and the liquid content of the insulating layer is greater than a first humidity threshold value, judging that the protective layer has a leakage fault.
When the temperature of the pipeline layer is reduced, the temperature of the insulating layer is increased, and the liquid content of the insulating layer is greater than a first humidity threshold value, it is described that the return water in the pipeline layer leaks into the insulating layer, so that the temperature in the pipeline layer is reduced, the temperature of the insulating layer is higher, namely the pipeline layer has a leakage fault, and the leakage position can be positioned according to the position of the leakage detection module; and when the temperature of the pipeline layer is unchanged, the temperature of the insulating layer is changed, and the liquid content of the insulating layer is greater than the first humidity threshold value, the pipeline layer is not damaged, but the moisture in the soil is mixed in the insulating layer, so that the leakage fault of the protective layer is judged.
Above-mentioned heat supply pipeline's detecting system can carry out real-time supervision and location to heat supply pipeline's various trouble, need not spend a large amount of manpower and material resources to the trouble place with the reason investigation, practice thrift the detection cost to this heat supply pipeline's detecting system's fault detection is higher with the location rate of accuracy, is convenient for lock fast the trouble, strives for the time to salvage and remedy.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The monitoring system of the heat supply pipeline is characterized in that the heat supply pipeline sequentially comprises a pipeline layer, an insulating layer and a protective layer from the inner side to the outer side; the monitoring module of heat supply pipeline includes: the device comprises a temperature detection module, a pressure detection module, a flow detection module, a leakage detection module and a data processing module;
the temperature detection module is arranged on the pipeline layer and the insulating layer and used for measuring the temperature of the pipeline layer and the temperature of the insulating layer; the pressure detection module is arranged at the joint of the pipeline layers adjacent to the heat supply pipeline and used for detecting the pressure of the pipeline layers; the flow detection module is arranged at the joint of the pipeline layers adjacent to the heat supply pipeline and used for detecting the flow of the pipeline layers; the leakage detection module is arranged on the insulating layer and used for detecting the liquid content of the insulating layer;
the data processing module is used for acquiring whether heating faults exist in the supply water and the return water of the pipeline layer according to the temperature of the pipeline layer, and judging water inlet pressure faults and corrosion faults of the pipeline layer according to the pressure of the pipeline layer, the flow of the pipeline layer and the liquid content of the insulating layer; the data processing module is also used for judging whether the pipeline layer and the protective layer have leakage faults or not according to the temperature of the insulating layer, the pressure of the pipeline layer and the liquid content of the insulating layer, and positioning the leakage position.
2. The system of claim 1, wherein the leak detection module comprises: at least one positioning sensor;
the positioning sensor is used for changing the impedance of the positioning sensor according to the content of the liquid, so that the data processing module judges whether the pipeline layer and/or the protective layer leaks or not according to the impedance of the positioning sensor.
3. The system of claim 1, further comprising: the alarm module is electrically connected with the data processing module;
the alarm module is used for giving an alarm when the data processing module judges that the heating fault, the water inlet pressure fault, the corrosion fault and/or the leakage fault occur in the heat supply pipeline.
4. The system of claim 1, further comprising: the communication module is electrically connected with the data processing module;
the communication module is used for sending the pipeline layer temperature, the insulating layer temperature, the pipeline layer pressure, the pipeline layer flow and/or the insulating layer liquid content to a central monitoring system.
5. The system of claim 1, further comprising:
a battery management module; the battery management comprises a solar battery pack and a standby battery pack and is used for supplying power to a monitoring system of the heat supply pipeline;
a housing protection module; the shell protection module is provided with an air cooling system and a heating system and used for protecting a monitoring system of the heat supply pipeline.
6. The heating pipeline monitoring system of claim 1, further comprising a display; and the device is used for displaying the temperature of the pipeline layer, the temperature of the insulating layer, the pressure of the pipeline layer, the flow of the pipeline layer and/or the liquid content of the insulating layer.
7. A method for monitoring a heat supply pipeline, which is applied to the system for monitoring a heat supply pipeline according to any one of claims 1 to 6, the method for monitoring a heat supply pipeline comprising:
detecting the temperature of the pipeline layer and the temperature of the insulating layer through a temperature detection module; detecting the pressure of the pipeline layer through a pressure detection module; detecting the flow of the pipeline layer through a flow detection module; detecting the liquid content of the insulating layer through a leakage detection module;
acquiring whether heating faults exist in the feedwater water or the backwater of the pipeline layer according to the temperature of the pipeline layer, and judging water inlet pressure faults or corrosion faults of the pipeline layer according to the pressure of the pipeline layer, the flow of the pipeline layer and the liquid content of the insulating layer; and judging whether the pipeline layer and the protective layer have leakage faults or not according to the temperature of the insulating layer, the pressure of the pipeline layer and the liquid content of the insulating layer, and positioning the leakage position.
8. The method for monitoring the heat supply pipeline according to claim 7, wherein the step of obtaining whether the heating fault exists in the supply water and the return water of the pipeline layer according to the temperature of the pipeline layer specifically comprises the following steps:
when the temperature of the pipeline layer is greater than a first heating temperature threshold value, judging that the heating temperature of the feedwater water is too high;
and when the temperature of the pipeline is less than a second heating temperature threshold value, judging that the heating temperature of the supply water and the return water is too low.
9. The method of claim 7, wherein determining a water inlet pressure failure or a corrosion failure of the pipe layer based on the pipe layer pressure, the pipe layer flow rate, and the insulation layer liquid content comprises:
when the pressure of the pipeline layer is larger than a first pressure threshold value and the flow of the pipeline layer is larger than a first flow threshold value, judging that the pressure of the water inlet is overhigh; when the pressure of the pipeline layer is lower than a second pressure threshold value, the flow of the pipeline layer is lower than a second flow threshold value, and the liquid content of the insulating layer is smaller than a first humidity threshold value, judging that the pressure of the water inlet is too low;
and when the pressure of the pipeline layer is greater than a third pressure threshold value and the flow of the pipeline layer is less than a third flow threshold value, judging that the corrosion fault occurs in the pipeline layer.
10. The method of claim 7, wherein determining whether a leak fault has occurred in the pipe layer and/or the protective layer based on the insulation layer temperature, the pipe layer pressure, and the insulation layer liquid content, and locating a leak location comprises:
when the temperature of the pipeline layer is reduced, the temperature of the insulating layer is increased, and the liquid content of the insulating layer is greater than a first humidity threshold value, judging that the pipeline layer has a leakage fault, and positioning a leakage position according to the position of the leakage detection module; when the pipeline layer has a leakage fault, judging the leakage degree of the pipeline layer according to the pressure of the pipeline layer and the reduction speed of the flow of the pipeline layer;
and when the temperature of the pipeline layer is unchanged, the temperature of the insulating layer is changed, and the liquid content of the insulating layer is greater than a first humidity threshold value, judging that the protective layer has a leakage fault.
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