CN113669628B - Operation monitoring and online fault diagnosis system for steam heating network - Google Patents
Operation monitoring and online fault diagnosis system for steam heating network Download PDFInfo
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- CN113669628B CN113669628B CN202110853319.9A CN202110853319A CN113669628B CN 113669628 B CN113669628 B CN 113669628B CN 202110853319 A CN202110853319 A CN 202110853319A CN 113669628 B CN113669628 B CN 113669628B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000003745 diagnosis Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 title claims description 20
- 238000005259 measurement Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000002159 abnormal effect Effects 0.000 claims description 20
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 14
- 230000005856 abnormality Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000004364 calculation method Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012625 in-situ measurement Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000013024 troubleshooting Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/06—Pipe-line systems for gases or vapours for steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- General Engineering & Computer Science (AREA)
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Abstract
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.
Description
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 the monitor in real time in a wireless communication 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 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 users, 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 skilled 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 technical solutions of the present invention, the technical solutions of the present invention are described in detail below through 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 main steam pipeline 1-2, branch steam pipelines 1-3 and user steam pipelines 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 the 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 wireless communication 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 an abnormality, it can prompt the operation manager to arrange personnel for investigation or maintenance according to the cause 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 should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (4)
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 main pipeline metering device (2-1), the branch pipeline metering devices (2-2) and the user metering devices (2-3) measure steam flow, temperature, pressure and enthalpy parameters at the measuring points of all pipeline sections of the steam heat supply network in real time;
the measuring device module (3) comprises a field measuring box (3-1), a temperature measuring element (3-2), an environment thermometer (3-3), an anemometer (3-4), a top temperature measuring belt (3-5) and a vibration sensor (3-6), the field measuring box (3-1) uploads field measuring data to a monitor (4) in real time in a wireless communication mode, the temperature measuring element (3-2) is uniformly distributed in the circumferential area of the outer surface of the steam pipeline, the environment thermometer (3-3) and the anemometer (3-4) are both arranged in the area 1m around the temperature measuring element (3-2), the top temperature measuring belt (3-5) is laid on the top of the steam pipeline, and the vibration sensor (3-6) is arranged at the bottom of the steam pipeline;
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 heat network operation monitoring and online fault diagnosis system according to claim 1, 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.
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| CN114216713A (en) * | 2021-12-15 | 2022-03-22 | 浙江浙能技术研究院有限公司 | Comprehensive detection and evaluation system and method for heat dissipation characteristics of overhead steam heat supply network |
| CN114216056A (en) * | 2021-12-22 | 2022-03-22 | 华能酒泉发电有限公司 | Method for measuring local pressure loss of conveying steam pipe |
| CN114580883A (en) * | 2022-02-28 | 2022-06-03 | 江苏国信协联能源有限公司 | Intelligent comprehensive management and control system of heat supply pipe network |
| CN117432945B (en) * | 2023-12-20 | 2024-03-08 | 济宁高新公用事业发展股份有限公司 | Supervision system for realizing energy-saving safe operation control of long-distance pipeline network |
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| CN202132702U (en) * | 2011-05-06 | 2012-02-01 | 薛华 | Thermal recovery pressure reduction device |
| CN202795099U (en) * | 2012-05-31 | 2013-03-13 | 开封万盛新材料有限公司 | Pressure control system for steam heating devices |
| CN103994332B (en) * | 2014-04-16 | 2017-02-01 | 大连科华热力管道有限公司 | Steam directly-buried pipe network with leakage warning device |
| CN106322111B (en) * | 2016-10-10 | 2018-12-18 | 北京京诚泽宇能源环保工程技术有限公司 | Voltage-regulating system is matched in a kind of storage of gas |
| CN107061997A (en) * | 2017-03-28 | 2017-08-18 | 智润科技有限公司 | Set up the method and monitoring system of multichannel water-supply structure leakage loss condition monitoring pipe network |
| CN107191790A (en) * | 2017-07-24 | 2017-09-22 | 宁夏大学 | A kind of self closing device when the automatic monitoring of indoor water supply pipe and leak |
| CN108763769B (en) * | 2018-05-30 | 2022-08-02 | 新奥泛能网络科技有限公司 | Heat loss calculation method and device for overhead steam pipe network |
| CN110906171B (en) * | 2019-10-29 | 2021-08-10 | 中国石油化工股份有限公司 | Pipeline heat preservation condition monitoring and hierarchical control method based on dynamic envelope curve method |
| CN111412388A (en) * | 2020-03-23 | 2020-07-14 | 中国舰船研究设计中心 | Novel nuclear power ship high-pressure steam automatic pressure reduction device and method |
| CN112179584A (en) * | 2020-09-23 | 2021-01-05 | 上海城市水资源开发利用国家工程中心有限公司 | Verification platform of water supply pipeline leak detection equipment |
| CN113137650B (en) * | 2021-04-16 | 2022-06-24 | 浙江大学 | Steam heat network system regulation and control method combined with distributed power generation |
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Denomination of invention: A Steam Heating Network Operation Monitoring and Online Fault Diagnosis System Granted publication date: 20220506 Pledgee: Zhongguancun Branch of Bank of Beijing Co.,Ltd. Pledgor: CCTEG CLEAN ENERGY Co.,Ltd. Registration number: Y2024980003067 |