阅读说明：本技术 一种蒸汽热网运行监控和在线故障诊断系统 (Operation monitoring and online fault diagnosis system for steam heating network ) 是由 何海军 曾鑫 赵子东 范玮 简洪生 孙宇 马洪洲 赵静 刘尧祥 武广龙 李振 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种蒸汽热网运行监控和在线故障诊断系统,包括蒸汽热源、蒸汽管道模块、蒸汽用户、计量装置模块、测量装置模块,所述蒸汽热源将蒸汽通过所述蒸汽管道模块传输至蒸汽用户；所述蒸汽管道模块包括蒸汽主管道、蒸汽分支管道和用户蒸汽管道；所述计量装置模块包括主管道计量装置、分支管道计量装置和用户计量装置；所述测量装置模块包括现场测量箱、测温元件、环境温度计、风速计、顶部测温带和振动传感器；所述蒸汽用户通过用户蒸汽管道接收蒸汽。本发明通过数据采集和分析,更加科学精确的发现蒸汽压力、温度和流量异常,提前预判水击事故和蒸汽泄漏事故,并经过系统实时监测蒸汽热网的运行情况,节省大量现场测量工作。(The invention discloses a steam heat network operation monitoring and online fault diagnosis system, which comprises a steam heat source, a steam pipeline module, a steam user, a metering device module and a measuring device module, wherein the steam heat source transmits steam to the steam user through the steam pipeline module; the steam pipeline module comprises a steam main pipeline, a steam branch pipeline and a user steam pipeline; the metering device module comprises a main pipeline metering device, a branch pipeline metering device and a user metering device; the measuring device module comprises a field measuring box, a temperature measuring element, an environmental thermometer, an anemometer, a top temperature measuring belt and a vibration sensor; the steam user receives steam through a user steam pipe. According to the invention, through data acquisition and analysis, the abnormality of steam pressure, temperature and flow can be more scientifically and accurately found, water attack accidents and steam leakage accidents can be pre-judged in advance, the operation condition of the steam heat supply network can be monitored in real time through the system, and a large amount of field measurement work can be saved.)

1. A steam heat network operation monitoring and online fault diagnosis system is characterized by comprising a steam heat source (1-1), a steam pipeline module, a steam user (1-5), a metering device module and a measuring device module (3),

the steam heat source (1-1) transmits steam to a steam user (1-5) through the steam pipeline module;

the steam pipeline module comprises a steam main pipeline (1-2), a steam branch pipeline (1-3) and a user steam pipeline (1-4);

the metering device module comprises a main pipeline metering device (2-1), a branch pipeline metering device (2-2) and a user metering device (2-3);

the measuring device module (3) comprises a field measuring box (3-1), a temperature measuring element (3-2), an environmental thermometer (3-3), an anemometer (3-4), a top temperature measuring belt (3-5) and a vibration sensor (3-6);

the steam consumer (1-5) receives steam via a consumer steam line (1-4).

2. Steam heating network operation monitoring and online fault diagnosis system according to claim 1, characterized in that the main pipe metering device (2-1) is installed upstream of the main steam pipe (1-2), the branch pipe metering device (2-2) is installed upstream of the branch steam pipe (1-3), and the user metering device (2-3) is installed downstream of the user steam pipe (1-4).

3. The steam heat network operation monitoring and online fault diagnosis system according to claim 1, wherein the main steam pipe (1-2) is a main steam pipe, the upstream of the main steam pipe (1-2) is connected with a steam heat source (1-1), the downstream is connected with a plurality of branch steam pipes (1-3), and steam is delivered to steam users (1-5) through the branch steam pipes (1-3) and the user steam pipes (1-4).

4. The steam heating network operation monitoring and online fault diagnosis system according to claim 1, characterized in that the field measurement box (3-1) uploads field measurement data to the monitor (4) in real time by communicating wirelessly.

5. The steam heating network operation monitoring and online fault diagnosis system according to claim 1, wherein the temperature measuring elements (3-2) are uniformly distributed in the circumferential area of the outer surface of the steam pipeline, the environmental thermometer (3-3) and the anemometer (3-4) are both arranged in the area of 1m around the temperature measuring elements (3-2), the top temperature measuring belt (3-5) is laid at the top of the steam pipeline, and the vibration sensor (3-6) is installed at the bottom of the steam pipeline.

6. The steam heat network operation monitoring and online fault diagnosis system according to claim 1, characterized in that the main pipe metering device (2-1), the branch pipe metering devices (2-2) and the user metering devices (2-3) perform real-time measurement of steam flow, temperature, pressure and enthalpy parameters at the measurement points of the pipe sections of the steam heat network.

7. The steam heat network operation monitoring and online fault diagnosis system according to claim 4, wherein the monitoring (4) analyzes whether the steam flow, the pressure and the temperature of the pipe section with abnormal loss of the steam heat network are abnormal, whether the heat dissipation and temperature measurement are abnormal, the heat preservation damage area, the steam leakage area and the pipe section with accumulated water in the steam pipe network according to the uploaded measurement data.

Technical Field

The invention relates to the technical field of centralized heating, in particular to a steam heating network operation monitoring and online fault diagnosis system.

Background

The steam is widely applied to industrial production and town heating and used for providing heat energy required by production process and heating, the centralized heating has the advantages of high energy utilization efficiency and remarkable energy saving, and the steam is supplied to users through a steam heating network. With the expansion of heat supply scale and heat supply radius, the centralized heat supply pipe network presents the development trend of scale and long distance, and one of the important challenges to be faced by the steam heat supply network is limited monitoring measures, delay of fault discovery, high loss degree of the steam heat supply network and lack of effective diagnosis means.

The concrete is embodied in the following four aspects:

1) the steam heating network can reach dozens of kilometers or even hundreds of kilometers, the pipeline is long, the number of management users is large, the number of instruments related to the field is large, and the manual inspection and management difficulty is very high. Problems such as water hammer accidents, steam leaks are often discovered after or for a long period of time after the problem occurs, which is detrimental to efficient, safe and stable operation of the steam heating network.

2) The data acquisition of the steam heating network is huge, and the efficiency of manual statistical analysis is low. Heat dissipation data related to management loss analysis also needs to be measured on site synchronously to achieve more accurate calculation and analysis; on-site measurement work is usually performed after statistics results are counted, the risk of inaccurate analysis is increased due to the asynchronous problem, and a large amount of manpower is consumed for on-site measurement work.

3) The results of the present analysis only represent the results of the entire steam heating network. For example, the problem of high loss of the pipe network is that, precisely, the result of all steam pipe networks after statistics and calculation is integrated, which section of the steam heat supply network is abnormal cannot be locked accurately, so that more precise measures for reducing the loss of the pipe network are taken.

4) And the field instrument feedback data is abnormal. For example, whether certain temperature or pressure data is high or not is generally judged by human observation, and the relationship with personal experience is large, and if the data is not calibrated by an instrument, the problem that the data is difficult to identify or the probability of misjudgment is high is easily caused.

Disclosure of Invention

In view of the above technical problems in the related art, the present invention provides a steam heating network operation monitoring and online fault diagnosis system, which can overcome the above disadvantages of the prior art methods.

In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:

a steam heat network operation monitoring and online fault diagnosis system comprises a steam heat source, a steam pipeline module, a steam user, a metering device module and a measuring device module, wherein,

the steam heat source transmits steam to a steam user through the steam pipeline module;

the steam pipeline module comprises a steam main pipeline, a steam branch pipeline and a user steam pipeline;

the metering device module comprises a main pipeline metering device, a branch pipeline metering device and a user metering device;

the measuring device module comprises a field measuring box, a temperature measuring element, an environmental thermometer, an anemometer, a top temperature measuring belt and a vibration sensor;

the steam user receives steam through a user steam pipe.

Furthermore, the main pipeline metering device is installed at the upper stream of the main steam pipeline, the branch pipeline metering device is installed at the upper stream of the branch steam pipeline, and the user metering device is installed at the lower stream of the user steam pipeline.

Furthermore, the main steam pipeline is a main steam pipeline, the upstream of the main steam pipeline is connected with a steam heat source, the downstream of the main steam pipeline is connected with a plurality of branch steam pipelines, and steam is conveyed to a steam user through the branch steam pipelines and a user steam pipeline.

Furthermore, the field measurement box uploads field measurement data to monitoring in real time in a communication wireless mode.

Furthermore, the temperature measuring elements are uniformly distributed in the circumferential area of the outer surface of the steam pipeline, the environment thermometer and the anemometer are both arranged in the area of 1m around the temperature measuring elements, the top temperature measuring belt is laid on the top of the steam pipeline, and the vibration sensor is arranged at the bottom of the steam pipeline.

Furthermore, the main pipeline metering device, the branch pipeline metering device and the user metering device are used for measuring steam flow, temperature, pressure and enthalpy parameters of the measuring points of all the pipeline sections of the steam heating network in real time.

Further, the monitoring analyzes whether the steam flow, the pressure and the temperature of the abnormal steam pipe network loss pipe section, the heat dissipation and temperature measurement, the heat preservation damage area, the steam leakage area and the steam pipe network water accumulation pipe section according to the uploaded measurement data.

The invention has the beneficial effects that: by analyzing the loss of the steam heat supply network in detail, specifically and accurately, wherein the loss of the steam heat supply network comprises the loss of the global steam heat supply network, the loss of all steam branch pipelines and the loss of all user steam pipelines, when the analysis result is abnormal, the abnormal position can be accurately positioned, the reason can be checked, the abnormal pipe network can be improved in time, the running condition of the pipe network can be continuously improved, the loss of the global steam heat supply network can be reduced, and the purpose of saving energy can be realized; by collecting and analyzing data, the steam pressure, temperature and flow abnormity can be found more scientifically, timely and accurately, and water attack accidents and steam leakage accidents can be pre-judged in advance; the operation condition of the steam heating network is monitored in real time, the operation condition is evaluated in real time through system analysis, and the operation fault or abnormality of the steam heating network is found in advance and timely processed; the required measurement data is analyzed for the steam heat pipe loss, the energy efficiency and the pipe loss, so that synchronous measurement is realized, calculation and analysis are more accurate, and a large amount of field measurement work is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a system control block diagram of a steam heating network operation monitoring and online fault diagnosis system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an in-situ measurement system of a steam heat network operation monitoring and online fault diagnosis system according to an embodiment of the present invention.

In the figure: 1-1 steam heat source, 1-2 main steam pipeline, 1-3 branch steam pipeline, 1-4 user steam pipeline, 1-5 steam user, 2-1 main pipeline metering device, 2-2 branch pipeline metering device, 2-3 user metering device, 3 measuring device module, 3-1 field measuring box, 3-2 temperature measuring element, 3-3 environment thermometer, 3-4 anemometer, 3-5 top temperature measuring belt, 3-6 vibration sensor and 4 monitoring.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention, and for the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below by specific use modes.

As shown in fig. 1-2, the steam heat network operation monitoring and online fault diagnosis system according to the embodiment of the invention comprises a steam heat source 1-1, a steam pipeline module, a steam user 1-5, a metering device module and a measuring device module 3.

The steam heat source 1-1 transmits and supplies steam to a steam user 1-5 through the steam pipeline module; the steam user 1-5 receives steam through a user steam pipe 1-4.

The steam pipeline module comprises a steam main pipeline 1-2, a steam branch pipeline 1-3 and a user steam pipeline 1-4; the main steam pipeline 1-2 is a main steam pipeline, the upstream of the main steam pipeline 1-2 is connected with a steam heat source 1-1, the downstream is connected with a plurality of branch steam pipelines 1-3, and steam is conveyed to steam users 1-5 through the branch steam pipelines 1-3 and the steam user pipelines 1-4; and metering devices are arranged on all steam pipelines in the steam pipeline module.

The main steam pipeline 1-2, the branch steam pipeline 1-3 and the user pipeline 1-4 of each specification are provided with a measuring device. For example: the device comprises 1-2 DN500 steam main pipelines, 1-3 DN300 steam branch pipelines, 1-3 DN250 steam branch pipelines, 1-4 DN150 user pipelines, 1-4 DN100 user pipelines and 1-4 DN80 user pipelines, 6 pipelines with total specifications of DN500, DN300, DN250, DN150, DN100 and DN8, and each pipeline is provided with a corresponding measuring device.

The metering device module comprises a main pipeline metering device 2-1, a branch pipeline metering device 2-2 and a user metering device 2-3; the main pipeline metering device 2-1 is installed at the upstream of the main steam pipeline 1-2, the branch pipeline metering device 2-2 is installed at the upstream of the branch steam pipeline 1-3, and the user metering device 2-3 is installed at the downstream of the user steam pipeline 1-4.

The metering device module is mainly used for measuring and uploading steam mass flow, steam pressure, steam temperature, steam density, enthalpy parameter, steam flow rate and the like in the pipeline.

The measuring device module 3 comprises a field measuring box 3-1, a temperature measuring element 3-2, an environmental thermometer 3-3, an anemometer 3-4, a top temperature measuring belt 3-5 and a vibration sensor 3-6; the field measurement box 3-1 uploads field measurement data to the monitor 4 in real time in a communication wireless mode; the temperature measuring elements 3-2 are 4 measuring points and are uniformly distributed along the circumferential direction of the steam pipeline, and the average temperature value measured by the 4 measuring points is the average temperature of the measuring section during measurement; the environmental thermometer 3-3 and the anemometer 3-4 are both arranged in a 1m area around the temperature measuring element 3-2; the top temperature measuring belt 3-5 is laid on the top of the steam pipeline, the vibration sensor 3-6 is installed at the bottom of the steam pipeline, and the measuring device module 3 can measure heat dissipation loss and vibration signals at a measuring point in real time.

The vibration sensors 3-6 can monitor vibration signals of the installation positions of the pipelines regularly, the vibration signals are monitored and measured for 1 time per hour, and each measurement lasts for 5 minutes; the temperature measuring belt 3-5 is similar to an adhesive tape, and a black temperature-resistant insulating adhesive tape is selected to be adhered to the top of the steam pipeline, the emissivity is 0.98, and the laying length is 200 m. When the unmanned aircraft carrying the infrared camera patrols the steam pipeline at night, the temperature distribution at the top of the steam pipeline with the temperature measuring belts 3-5 laid can be accurately measured (the temperature measuring work is automatically finished at night, and a power supply of the measuring equipment can adopt a solar power supply device with a storage battery).

The monitoring device 4 analyzes whether the steam flow, the pressure and the temperature of the abnormal steam heat pipe network loss pipe section, the heat dissipation and temperature measurement, the heat preservation damage area, the steam leakage area and the steam pipe network water accumulation pipe section according to the uploaded measurement data; when the monitor 4 finds the abnormality, it can prompt the operation manager to arrange the personnel for examination or maintenance according to the reason of the abnormality.

When the steam heat network operation monitoring and online fault diagnosis system starts to work, firstly, a steam heat source 1-1 sequentially passes through a steam main pipeline 1-2, a steam branch pipeline 1-3 and a user steam pipeline 1-4 to convey steam to a user 5. The difference value of the steam mass flow between the main pipeline metering device 2-1 at the heat source 1-1 and the branch pipeline metering device 2-2 at the steam pipeline is the pipe network loss of the main steam pipeline 1-2. The difference value of the branch pipeline metering device 2-2 at the steam branch pipeline 1-3 and all the user metering devices 2-3 correspondingly connected with the steam branch pipeline 1-3 is the pipe network loss of the steam branch pipeline 1-3 and the user steam pipelines 1-4.

The inner diameters of the main steam pipes 1-2, branch steam pipes 1-3 and user steam pipes 1-4, the circumference of the pipes and the length of the pipes are known. The average temperature of the outer surface of the pipeline, the ambient temperature and the wind speed of the on-site measurement module are measured, so that the heat dissipation loss of the pipeline with the corresponding specification in unit length can be obtained. Based on the unit length heat dissipation loss and the pipeline length of pipelines with different specifications measured on site, the theoretical heat dissipation loss and the theoretical pipe network loss can be calculated through monitoring 4, and the theoretical loss and the actual loss of the whole steam heat supply network or any section of steam pipe network are compared, so that whether the loss of each steam heat supply network or a specific section of pipe network is abnormal or not can be judged.

When any section of steam pipe network is measured by the pipeline metering devices (a main pipeline metering device 2-1, a branch pipeline metering device 2-2 and a user metering device 2-3) to obtain the steam flow, the steam temperature and the steam pressure at the initial end, and then the theoretical heat dissipation loss data measured by the corresponding pipe network field measurement module are combined, the theoretical steam temperature and the theoretical steam pressure at the tail end of the pipe network can be calculated through a monitor 4, and whether the flow, the temperature and the pressure measurement of the user metering device 2-3 are abnormal or not can be judged by comparing the theoretical value with the actual steam flow, the steam temperature and the pressure measured by the user metering device 2-3.

When the accumulated water in the pipeline increases to a certain amount, and before a water hammer accident occurs, the vibration signal measured by the field measurement module is analyzed by the monitor 4, and then the frequency characteristic value changes, so that whether the pipeline runs abnormally is judged.

When the unmanned aerial vehicle carrying the infrared camera patrols and examines the steam pipeline at night, the temperature measuring belt is used for assisting the unmanned aerial vehicle in measuring the top temperature of the pipeline, and when the top temperature of a certain area of the temperature measuring belt is obviously higher than or lower than the average temperature of the temperature measuring belt within 5 meters around the area, the temperature of the area is abnormal, and the reason is that the steam pipeline in the area is damaged in heat preservation or steam is leaked.

Under normal conditions, when the unmanned aerial vehicle patrols and examines at night, when passing through a steam pipe network field measurement module, the average value of the temperature measured by the field measurement module and the temperature of a nearby temperature measuring zone are compared, the temperature is taken as a normal value and uploaded to a monitor 4 for storage, when the unmanned aerial vehicle patrols and examines at a certain time and finds that the difference value between the average value and the temperature measured zone is obviously higher than or lower than the normal value, data abnormity is judged, and the possible reason is that a temperature measuring element 3-2 of the field measurement module breaks down. If the abnormal condition exists, the monitoring device 4 sends out an abnormal prompt, and an operation manager arranges personnel for troubleshooting or maintenance according to the abnormal condition so as to realize real-time monitoring, analysis and accurate identification of the pipe loss, and pre-judge and timely process the abnormal condition and the fault in advance.

In summary, by means of the above technical solution of the present invention, through detailed, specific and accurate analysis of the loss of the steam heat supply network, including analysis of the global steam heat supply network loss, all steam branch pipes and all user steam pipe network losses, when the analysis result is abnormal, the abnormal position can be accurately located and the reason can be checked, and the abnormal pipe network can be improved in time, so as to continuously improve the pipe network operation status, reduce the global steam heat supply network loss, and achieve the purpose of saving energy; by collecting and analyzing data, the steam pressure, temperature and flow abnormity can be found more scientifically, timely and accurately, and water attack accidents and steam leakage accidents can be pre-judged in advance; the operation condition of the steam heating network is monitored in real time, the operation condition is evaluated in real time through system analysis, and the operation fault or abnormality of the steam heating network is found in advance and timely processed; the required measurement data is analyzed for the steam heat pipe loss, the energy efficiency and the pipe loss, so that synchronous measurement is realized, calculation and analysis are more accurate, and a large amount of field measurement work is saved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.