CN116558732A - Boiler pressure-bearing pipeline leakage on-line monitoring system - Google Patents
Boiler pressure-bearing pipeline leakage on-line monitoring system Download PDFInfo
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- CN116558732A CN116558732A CN202310567099.2A CN202310567099A CN116558732A CN 116558732 A CN116558732 A CN 116558732A CN 202310567099 A CN202310567099 A CN 202310567099A CN 116558732 A CN116558732 A CN 116558732A
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- leakage
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- monitoring system
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 34
- 238000010926 purge Methods 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 13
- 230000000007 visual effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a boiler pressure-bearing pipeline leakage on-line monitoring system which comprises a plurality of sound guide pipes, a plurality of furnace tube leakage acoustic wave sensors, a data acquisition card, a DCS controller and a main control host, wherein the plurality of sound guide pipes are respectively arranged on the outer wall of a boiler in a surrounding manner, and the first ends of the sound guide pipes are respectively communicated with the interior of the boiler; the furnace tube leakage acoustic wave sensors are respectively in one-to-one correspondence with the sound guide tubes, and are respectively and correspondingly connected with the second ends of the sound guide tubes; each furnace tube leakage acoustic wave sensor is electrically connected with a data acquisition card, the data acquisition card is electrically connected with a DCS controller, and the DCS controller is in wireless connection with a master control host. The online monitoring system for leakage of the pressure-bearing pipeline of the boiler, provided by the invention, can be used for online monitoring of the pressure-bearing pipeline of the boiler, timely and accurately determining the leakage condition of the pressure-bearing pipeline, reducing the expansion of leakage accidents of the pressure-bearing pipeline of the boiler and ensuring the safe operation of the boiler.
Description
Technical Field
The invention relates to the technical field of boiler tube leakage monitoring, in particular to an online monitoring system for boiler pressure-bearing pipeline leakage.
Background
The boiler operates under severe conditions for a long time, and is a great challenge to the safety performance of the boiler, in particular to the boiler pressure-bearing pipeline, and the leakage problem of the boiler pressure-bearing pipeline is always one of important indexes for measuring the safe and economic operation of the boiler because high-temperature and high-pressure mediums continuously wash the inner wall of the pressure-bearing pipeline.
However, in the conventional boiler pressure-bearing pipeline detection technology, the boiler needs to be shut down periodically, and then the boiler enters a hearth to check the pressure-bearing pipeline, so that the operation is inconvenient, the detection accuracy is low, the condition of the pressure-bearing pipeline in the hearth cannot be controlled in time, and the safe operation of the boiler is further influenced.
Disclosure of Invention
The invention aims to provide an online monitoring system for leakage of a pressure-bearing pipeline of a boiler, which can conveniently monitor the pressure-bearing pipeline of the boiler online and accurately determine the leakage condition of the pressure-bearing pipeline in time.
The invention provides a boiler pressure-bearing pipeline leakage on-line monitoring system which comprises a plurality of sound guide pipes, a plurality of furnace tube leakage acoustic wave sensors, a data acquisition card, a DCS controller and a main control host, wherein the plurality of sound guide pipes are respectively arranged on the outer wall of a boiler in a surrounding manner, and the first ends of the sound guide pipes are respectively communicated with the interior of the boiler; each furnace tube leakage sound wave sensor is in one-to-one correspondence with each sound guide tube, and each furnace tube leakage sound wave sensor is correspondingly connected with the second end of each sound guide tube; each furnace tube leakage acoustic wave sensor is electrically connected with the data acquisition card, the data acquisition card is electrically connected with the DCS controller, and the DCS controller is in wireless connection with the master control host.
According to the on-line monitoring system for leakage of the pressure-bearing pipeline of the boiler, the second end of each sound guide pipe is respectively connected with the installation branch pipe, and each furnace tube leakage sound wave sensor is correspondingly connected with each sound guide pipe through the installation branch pipe.
According to the online monitoring system for leakage of the boiler pressure-bearing pipeline, provided by the invention, the upper end of the installation branch pipe is provided with the conical installation port, the conical installation port is provided with the first connecting flange, the bottom of the boiler tube leakage acoustic wave sensor is provided with the second connecting flange, and the first connecting flange and the second connecting flange are fixedly connected through connecting bolts.
According to the online monitoring system for leakage of the pressure-bearing pipeline of the boiler, each sound guide pipe is obliquely upwards arranged, each installation branch pipe is vertically arranged, and the lower end of each installation branch pipe is correspondingly connected and fixed with the second end of each sound guide pipe.
According to the online monitoring system for leakage of the pressure-bearing pipeline of the boiler, provided by the invention, the second end of each sound guide pipe is also respectively connected with a purging pipeline, each purging pipeline is respectively provided with a purging control valve, and each purging pipeline is respectively connected with air source equipment.
According to the online monitoring system for leakage of the pressure-bearing pipeline of the boiler, each purging control valve is electrically connected with the purging control plate, and the purging control plate is electrically connected with the DCS controller.
According to the online monitoring system for leakage of the pressure-bearing pipeline of the boiler, provided by the invention, the main control host is provided with the buzzer.
According to the online monitoring system for leakage of the pressure-bearing pipeline of the boiler, the furnace tube leakage acoustic wave sensor comprises a stainless steel shell and an acoustic wave sensing element arranged in the stainless steel shell, and the bottom of the stainless steel shell is in threaded connection with the second connecting flange.
According to the online monitoring system for leakage of the pressure-bearing pipeline of the boiler, the LED display screen is arranged on the top of the stainless steel shell, and the LED display screen is electrically connected with the acoustic wave sensing element.
The invention provides a boiler pressure-bearing pipeline leakage on-line monitoring system which comprises a plurality of sound guide pipes, a plurality of furnace tube leakage acoustic wave sensors, a data acquisition card, a DCS controller and a main control host, wherein the plurality of sound guide pipes are respectively arranged on the outer wall of a boiler in a surrounding manner, and the first ends of the sound guide pipes are respectively communicated with the interior of the boiler; the furnace tube leakage acoustic wave sensors are respectively in one-to-one correspondence with the sound guide tubes, and are respectively and correspondingly connected with the second ends of the sound guide tubes; each furnace tube leakage acoustic wave sensor is respectively and electrically connected with a data acquisition card, the data acquisition card is electrically connected with a DCS controller, and the DCS controller is in wireless connection with a main control host; during operation, the acoustic wave sensors are used for detecting the acoustic wave frequency generated by medium flowing in the pressure-bearing pipeline at different positions of the boiler respectively, the data acquisition card is used for acquiring acoustic wave frequency data detected by the acoustic wave sensors and transmitting the acoustic wave frequency data to the DCS controller, the DCS controller is used for converting the acquired acoustic wave frequency data into visual graphic data and transmitting the visual graphic data to the main control host, and the main control host is used for receiving and displaying the visual graphic data, so that operators can observe conveniently. Therefore, the online monitoring system for leakage of the pressure-bearing pipeline of the boiler can monitor the pressure-bearing pipeline of the boiler online, timely and accurately determine the leakage condition of the pressure-bearing pipeline, reduce the expansion of leakage accidents of the pressure-bearing pipeline of the boiler and ensure the safe operation of the boiler.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the on-line monitoring system for leakage of a pressure-bearing pipeline of a boiler according to the present invention;
FIG. 2 is a schematic diagram of the installation of a single sound guide tube on a boiler in the boiler pressure-bearing pipeline leakage on-line monitoring system of the present invention;
FIG. 3 is a schematic diagram of the arrangement of a plurality of furnace tube leakage acoustic wave sensors on a boiler in the boiler pressure-bearing pipeline leakage on-line monitoring system of the present invention;
FIG. 4 is a schematic diagram of a furnace tube leakage acoustic wave sensor in the boiler pressure-bearing pipeline leakage on-line monitoring system of the invention.
Reference numerals illustrate:
1. an acoustic pipe; 2. a furnace tube leakage acoustic wave sensor; 201. a stainless steel housing; 202. an acoustic wave sensing element; 203. an LED display screen; 3. a data acquisition card; 4. a DCS controller; 5. a master control host; 6. an outer wall of the boiler; 7. installing a branch pipe; 701. a conical mounting port; 8. a first connection flange; 9. a second connection flange; 10. purging the pipeline; 11. a purge control valve; 12. and (5) purging the control panel.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 4, the on-line monitoring system for leakage of a pressure-bearing pipeline of a boiler according to the embodiment of the invention comprises a plurality of sound guide pipes 1, a plurality of boiler tube leakage acoustic wave sensors 2, a data acquisition card 3, a DCS controller 4 and a main control host 5, wherein the plurality of sound guide pipes 1 are respectively arranged on an outer wall 6 of the boiler in a surrounding manner, and first ends of the sound guide pipes 1 are respectively communicated with the interior of the boiler. Wherein each furnace tube leakage sound wave sensor 2 corresponds to each sound guide tube 1 one by one, and each furnace tube leakage sound wave sensor 2 is correspondingly connected with the second end of each sound guide tube 1. Wherein each furnace tube leakage acoustic wave sensor 2 is respectively and electrically connected with a data acquisition card 3, the data acquisition card 3 is electrically connected with a DCS controller 4, and the DCS controller 4 is in wireless connection with a main control host 5.
During operation, the acoustic wave sensors 2 are used for respectively detecting the acoustic wave frequencies generated by medium flowing in pressure-bearing pipelines at different positions of the boiler, the data acquisition card 3 is used for respectively acquiring acoustic wave frequency data detected by the acoustic wave sensors 2 and transmitting the acoustic wave frequency data to the DCS controller 4, the DCS controller 4 is used for converting the acquired acoustic wave frequency data into visual graphic data and transmitting the visual graphic data to the main control host 5, and the main control host 5 is used for receiving and displaying the visual graphic data, so that operators can observe the visual graphic data conveniently.
Therefore, the online monitoring system for leakage of the pressure-bearing pipeline of the boiler can monitor the pressure-bearing pipeline of the boiler online, timely and accurately determine the leakage condition of the pressure-bearing pipeline, reduce the expansion of leakage accidents of the pressure-bearing pipeline of the boiler, and ensure safe operation of the boiler.
Specifically, the main control host 5 is configured with a display screen, which is used for displaying the visualized graphic data received by the main control host 5, so as to facilitate the observation of operators.
Specifically, the specific number of the acoustic pipes 1 and the furnace leakage acoustic wave sensors 2 is required to be determined according to the actual situation of the boiler.
In the actual installation and arrangement process, a plurality of sound guide pipes 1 are annularly installed and arranged on the outer wall 6 of the boiler according to the actual condition of the boiler, and a plurality of sound guide pipes 1 are arranged at different height positions of the boiler, so that the sound wave frequency generated by medium flow in pressure-bearing pipelines at different positions of the boiler is detected through the furnace tube leakage sound wave sensors 2.
As shown in FIG. 3, a schematic diagram of a plurality of sound guide tubes 1 and a plurality of furnace tube leakage acoustic wave sensors 2 arranged on the outer wall of a boiler is provided, wherein A-A, B-B, C-C, D-D, E-E, F-F, G-G, L-L and M-M respectively represent different height positions on the boiler.
In some embodiments of the present invention, a mounting branch pipe 7 is connected to the second end of each sound guide pipe 1, and each furnace tube leakage acoustic wave sensor 2 is connected to each sound guide pipe 1 through the mounting branch pipe 7.
Wherein, be equipped with toper installing port 701 in the upper end of installing branch pipe 7, be equipped with first flange 8 in toper installing port 701 department, be equipped with second flange 9 in the bottom of boiler tube leakage acoustic wave sensor 2, be connected fixedly through connecting bolt between first flange 8 and the second flange 9 to realize that the reliable assembly between boiler tube leakage acoustic wave sensor 2 and the installing branch pipe 7 is fixed.
Wherein, each sound guiding tube 1 is arranged obliquely upwards, that is, the sound guiding tube 1 is arranged obliquely upwards from the first end to the second end. Each installation branch pipe 7 is vertically arranged, and the lower ends of the installation branch pipes 7 are respectively and correspondingly connected and fixed with the second ends of the sound guide pipes 1, so that the furnace tube leakage sound wave sensor 2 is vertically arranged, and the detection state of the furnace tube leakage sound wave sensor 2 is ensured.
In some embodiments of the present invention, a purge pipeline 10 is further connected to the second end of each sound guiding pipe 1, a purge control valve 11 is respectively arranged on each purge pipeline 10, and each purge pipeline 10 is respectively connected to an air source device (shown in the figure). That is, high-pressure gas can be introduced into the purging pipeline 10 through the gas source equipment, so that the sound guide pipe 1 is purged, the sound guide pipe 1 is prevented from being blocked by furnace dust of a boiler, and the furnace tube leakage acoustic wave sensor 2 can be ensured to be normally detected.
Wherein, each sweep control valve 11 is respectively connected with sweep control board 12 electricity, and sweep control board 12 and DCS controller 4 electric connection. According to the actual use requirement, the purge interval and the time of each purge can be set through the DCS controller 4, and a control instruction is sent to the purge control board 12, so that each purge control valve 11 is controlled through the purge control board 12 respectively, and further the periodic timing purge control of each sound guide tube 1 is realized.
In some embodiments of the present invention, a buzzer (not shown in the figure) may also be disposed on the master host 5, and when the master host 5 finds that the pressure-bearing pipeline of the boiler leaks, an alarm is sent out in time, so as to play a role in reminding.
In some embodiments of the present invention, the furnace tube leakage acoustic wave sensor 2 includes a stainless steel housing 201 and an acoustic wave sensing element 202 disposed within the stainless steel housing 201, wherein the bottom of the stainless steel housing 201 is screwed with the second connection flange 9. The working principle of the furnace tube leakage acoustic wave sensor 2 is as follows: the sound wave frequency generated by medium flow in the pressure-bearing pipeline is transmitted into the furnace tube leakage sound wave sensor 2, the furnace tube leakage sound wave sensor 2 utilizes spectrum analysis to distinguish background signals and leakage signals, once the leakage signals are captured, delay tracking analysis is carried out, detected data signals are timely transmitted to the data acquisition card 3, and then the data acquisition card 3 is timely transmitted to the DCS controller 4 for processing.
Wherein, an LED display screen 203 is disposed on the top of the stainless steel housing 201, and the LED display screen 203 is electrically connected with the acoustic wave sensor 202. That is, by providing the LED display screen 203, the detected sound wave frequency and the operation state of the sensor can be displayed.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. The on-line monitoring system for leakage of the pressure-bearing pipeline of the boiler is characterized by comprising a plurality of sound guide pipes, a plurality of furnace tube leakage acoustic wave sensors, a data acquisition card, a DCS controller and a main control host, wherein the plurality of sound guide pipes are respectively arranged on the outer wall of the boiler in a surrounding manner, and the first ends of the sound guide pipes are respectively communicated with the interior of the boiler; each furnace tube leakage sound wave sensor is in one-to-one correspondence with each sound guide tube, and each furnace tube leakage sound wave sensor is correspondingly connected with the second end of each sound guide tube; each furnace tube leakage acoustic wave sensor is electrically connected with the data acquisition card, the data acquisition card is electrically connected with the DCS controller, and the DCS controller is in wireless connection with the master control host.
2. The on-line monitoring system for leakage of pressure-bearing pipelines of boilers according to claim 1, wherein the second ends of the sound guide pipes are respectively connected with a mounting branch pipe, and the furnace tube leakage acoustic wave sensors are respectively connected with the sound guide pipes through the mounting branch pipes.
3. The online monitoring system for boiler pressure-bearing pipeline leakage according to claim 2, wherein a conical mounting opening is formed in the upper end of the mounting branch pipe, a first connecting flange is arranged at the conical mounting opening, a second connecting flange is arranged at the bottom of the furnace tube leakage acoustic wave sensor, and the first connecting flange and the second connecting flange are fixedly connected through connecting bolts.
4. The on-line monitoring system for leakage of pressure-bearing pipelines of boilers according to claim 2, wherein each sound guide pipe is arranged obliquely upwards, each installation branch pipe is arranged vertically, and the lower end of each installation branch pipe is correspondingly connected and fixed with the second end of each sound guide pipe.
5. The on-line monitoring system for leakage of pressure-bearing pipelines of boilers according to claim 1, wherein the second ends of the sound guide pipes are respectively connected with purging pipelines, purging control valves are respectively arranged on the purging pipelines, and the purging pipelines are respectively connected with air source equipment.
6. The on-line monitoring system for leakage of pressurized piping of a boiler according to claim 5, wherein each of said purge control valves is electrically connected to a purge control board, respectively, said purge control board being electrically connected to said DCS controller.
7. The on-line monitoring system for leakage of pressure-bearing pipelines of boilers according to any one of claims 1 to 6, wherein a buzzer is arranged on the master host.
8. The on-line monitoring system for boiler pressure-bearing pipeline leakage according to claim 3, wherein the furnace pipe leakage acoustic wave sensor comprises a stainless steel shell and an acoustic wave sensing element arranged in the stainless steel shell, and the bottom of the stainless steel shell is in threaded connection with the second connecting flange.
9. The on-line monitoring system for leakage of pressure-bearing pipeline of boiler of claim 8, wherein an LED display screen is arranged on top of the stainless steel housing, and the LED display screen is electrically connected with the acoustic wave sensing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310567099.2A CN116558732A (en) | 2023-05-18 | 2023-05-18 | Boiler pressure-bearing pipeline leakage on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310567099.2A CN116558732A (en) | 2023-05-18 | 2023-05-18 | Boiler pressure-bearing pipeline leakage on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116558732A true CN116558732A (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310567099.2A Pending CN116558732A (en) | 2023-05-18 | 2023-05-18 | Boiler pressure-bearing pipeline leakage on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116558732A (en) |
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2023
- 2023-05-18 CN CN202310567099.2A patent/CN116558732A/en active Pending
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