CN115014612A - Pipeline real-time stress monitoring device and stress adjusting method thereof - Google Patents
Pipeline real-time stress monitoring device and stress adjusting method thereof Download PDFInfo
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000005303 weighing Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
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- 238000009776 industrial production Methods 0.000 description 2
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- 238000011897 real-time detection Methods 0.000 description 2
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- 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
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Abstract
The invention discloses a pipeline real-time stress monitoring device and a stress adjusting method thereof, and belongs to the technical field of equipment stress monitoring. The protection pull rod is arranged along the axial direction of the pipeline to be monitored, and two ends of the protection pull rod are connected with two ends of the pipeline to be monitored; the protection pull rod is divided into two sections, a first pull rod connecting flange is connected with the first protection pull rod, a second pull rod connecting flange is connected with the second protection pull rod, the stress sensor is arranged between the first mounting flange and the second mounting flange, and the first pull rod connecting flange and the second mounting flange and the first mounting flange are fixedly connected through the matching of fixing bolts and locking nuts. The invention can monitor the oversized tension change condition of the protection pull rod of equipment, containers and pipelines in real time, master the stress fluctuation rule corresponding to production operation, thus prejudging the stress increase trend, accurately controlling the operation parameters of the equipment, effectively controlling the impact stress load and ensuring the safe and stable operation of the equipment.
Description
Technical Field
The invention relates to the technical field of stress monitoring of pressure equipment, in particular to a pipeline real-time stress monitoring device and a stress adjusting method thereof.
Background
With the continuous development of strong load, high pressure, high speed and rapid flow of modern large-scale industrial production, the change condition of the overlarge stress of equipment, a container and a pipeline cannot be monitored in real time, the running condition of the equipment is mastered in real time, the stress fluctuation rule corresponding to production running is mastered by combining the process characteristics of equipment running, the stress increase trend is prejudged, the running parameters of the equipment are controlled in a targeted and accurate manner, and the stress shock wave is effectively controlled; resulting in equipment failure and serious accidents.
On the other hand, wisdom manufacturing technology constantly develops, and the stress variation when real-time detection equipment moves to satisfy super large-scale range stress fluctuation detection demand, for intelligent control provides real-time, accurate stress variation big data, the accurate regulation and control equipment operating parameter of being convenient for, safety control impact stress peak value is the demand that really realizes high-quality development.
Through retrieval, Chinese patent application No. CN2016107156024 discloses a device for detecting hot air outlet stress of a blast furnace single-row hot blast stove, and an application system and a method thereof, wherein the application is an invention patent previously filed by the inventor and comprises an upper pressing plate, a lower pressing plate, a pressure head and a pressure sensor; the working surfaces of the upper and lower pressing plates are opposite; the bottom end surface of the pressure sensor is tightly attached to the working surface of the lower pressing plate, and the sensing end is tightly attached to the bottom end surface of the pressing head; the pressure sensor is connected with a blast furnace control system. The application system comprises 4 sets of stress devices which are divided into 2 groups, the two sides of 2 sections of H-shaped steel which is used as a pull rod between a hot air main pipe and a hot air furnace are symmetrically arranged, and the 2 sections of H-shaped steel are fixedly connected through flanges; each group of stress devices are symmetrically arranged up and down on the flange, and 2 sets of blast furnace single-row hot blast stove hot blast outlet stress detection devices are fixed together by bolts penetrating through 2 upper pressure plates, 2 lower pressure plates and 2 flanges. The application collects stress change data and analyzes the data by arranging a stress device at a connecting point of the pull rod. However, 4 sets of stress devices are complex in structure, and indirect detection stress is not accurate enough, so that accurate regulation and control cannot be realized.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the current working situations of strong load, high pressure, high speed and rapid flow rate of modern large-scale industrial production, the running conditions of equipment, containers and pipelines are monitored in real time, and the accurate control can be realized only by combining the technological characteristics of equipment running; the invention provides a stress pipeline real-time stress monitoring device and a stress adjusting method thereof, which can monitor the oversized tension change condition of a protection pull rod of equipment, a container and a pipeline in real time, master the stress fluctuation rule corresponding to production operation, so as to prejudge the stress increase trend, pertinently and accurately control the operation parameters of the equipment, effectively control impact stress load and ensure the safe and stable operation of the equipment.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention discloses a pipeline real-time stress monitoring device which comprises a protection pull rod, wherein the protection pull rod is arranged along the axial direction of a pipeline to be monitored, and two ends of the protection pull rod are respectively connected with two ends of the pipeline to be monitored; the monitoring unit comprises a first pull rod connecting flange, a second pull rod connecting flange, a first mounting flange, a second mounting flange, a fixing bolt, a locking nut and a stress sensor; the protection pull rod is divided into two sections, a first pull rod connecting flange is connected with the first protection pull rod, a second pull rod connecting flange is connected with the second protection pull rod, the stress sensor is arranged between the first mounting flange and the second mounting flange, and the first pull rod connecting flange and the second mounting flange and the second pull rod connecting flange and the first mounting flange are matched with each other through fixing bolts and locking nuts to achieve fixed connection.
Furthermore, 2-8 protective pull rods are uniformly arranged on the pipeline to be monitored along the circumferential direction of the pipeline; and each protection pull rod is provided with a monitoring unit.
Furthermore, the stress sensor adopts a pressure type weighing sensor, the stress sensor is connected with an upper computer, and the stress sensor transmits a detection signal to the upper computer.
Furthermore, the first protection pull rod and the second protection pull rod are round pieces, the connection parts of the first protection pull rod and the second protection pull rod with the first pull rod connection flange and the second pull rod connection flange are provided with threaded structures, and the first pull rod connection flange is in threaded connection with the first protection pull rod, and the second pull rod connection flange is in threaded connection with the second protection pull rod.
Furthermore, the flange holes formed on the first pull rod connecting flange, the second pull rod connecting flange, the first mounting flange and the second mounting flange are all even and uniformly arranged; fixing bolts for connecting the first pull rod connecting flange and the second mounting flange penetrate through odd-numbered flange holes; correspondingly, the fixing bolts for connecting and fixing the second pull rod connecting flange and the first mounting flange penetrate through the even number of flange holes, and vice versa.
Furthermore, the flange structures of the first pull rod connecting flange, the second pull rod connecting flange, the first mounting flange and the second mounting flange are circular, regular triangular, square or regular polygonal.
Furthermore, the pipeline to be monitored is a pressure pipeline or a pressure pipeline on a container or equipment, the monitoring unit is not limited by the installation of a protection pull rod, and the protection pull rod can be installed in parallel with the pipeline to be monitored and can also be installed in a diagonal pulling mode.
Furthermore, the monitoring unit is also provided with an adjusting nut which is matched with the locking nut to adjust the stress borne by the stress sensor.
According to the pipeline real-time stress adjusting method, the device is used for monitoring the stress of the pipeline to be monitored, and the opening and closing degree and the opening and closing speed of the pipeline valve are controlled according to the monitoring result so as to adjust the pipeline real-time stress.
The invention discloses a real-time stress adjusting method for a pipeline, which comprises the following steps:
step one, adjusting a locking nut and an adjusting nut, fastening a fixing bolt until a stress sensor displays data, and keeping initial data of the stress sensor on each protection pull rod consistent;
step two, under the normal operation condition of the pipeline to be monitored, adjusting the fixing bolts according to the calculated stress of 1.3 times of the tension rod, recording the stress data of all the stress sensors, and recording the stress data as F First stage ；
Step three, recording the stress data of all the stress sensors under the condition that the pipeline to be monitored stops running, and recording the stress data as F Stop at ；
Step four, calculating the protection pull rod calibration responseForce F Sign board ＝F First stage -F Stop at ；
Fifthly, the pipeline to be monitored returns to normal operation, the fixing bolt is adjusted, and the stress data of the stress sensor is displayed as F Sign board ；
Step six, when the working state of the pipeline to be monitored changes, F is used Sign As a standard, according to the real-time display data on the stress sensor and F Sign board The opening and closing degree and the opening and closing speed of the pipeline valve are adjusted.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) according to the pipeline real-time stress monitoring device, a stress sensor is arranged between a first mounting flange and a second mounting flange, and a first pull rod connecting flange and the second mounting flange and a second pull rod connecting flange and the first mounting flange are fixedly connected through the matching of a fixing bolt and a locking nut; the real-time detection of the tensile force borne by the first protection pull rod and the second protection pull rod is realized through a simple flange and bolt combined structure, the structural design is simple, and the realization cost is low;
(2) according to the pipeline real-time stress monitoring device, 2-8 protection pull rods are uniformly arranged on a pipeline to be monitored along the circumferential direction of the pipeline; each protection pull rod is provided with a monitoring unit, and the sum of the sensors is used as the stress quantity analog data of the pipeline to be monitored; the stress sensor adopts a pressure type weighing sensor, and the measuring range can reach 5 multiplied by 10 6 N, the ultra-large stress change conditions of the first protection pull rod and the second protection pull rod can be monitored in real time, and the ultra-large stress monitoring requirement is met;
(3) according to the pipeline real-time stress monitoring device, the pressure type stress sensor is used for monitoring the tensile force borne by the pull rod in real time in the reinforced protection pull rod of a pressure pipeline, a container with the pressure pipeline, equipment and the like, and the equipment stress model is established by combining calculation, so that the corresponding equipment running condition can be accurately known when the stress changes; the stress fluctuation rule corresponding to production operation is mastered by combining the process characteristics of equipment operation, the stress increase trend is prejudged, the equipment operation parameters are regulated and controlled in a targeted and accurate mode, the effective control of stress variation is realized, the stress impact load is reduced, the safe and stable operation of the equipment is ensured, the fatigue load of the equipment is reduced, the service life of the equipment is prolonged, the intrinsic safety of high-quality development is really realized, and real-time and accurate large-mileage stress data is collected for intelligent control.
Drawings
FIG. 1 is a schematic view of the installation of a real-time stress monitoring device for pipelines according to the present invention;
fig. 2 is a schematic structural diagram of a monitoring unit according to the present invention.
The reference numerals in the schematic drawings illustrate:
11. a first protective pull rod; 12. a second protection pull rod; 21. the first pull rod is connected with the flange; 22. the second pull rod is connected with the flange; 31. a first mounting flange; 32. a second mounting flange; 4. fixing the bolt; 51. locking the nut; 52. adjusting the nut; 6. a stress sensor;
I. a monitoring unit; II. A protection pull rod; III, a pipeline to be monitored.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
With reference to fig. 1 and fig. 2, the pipeline real-time stress monitoring device of the embodiment includes a protection pull rod II, the protection pull rod II is disposed along an axial direction of a pipeline III to be monitored, and two ends of the protection pull rod II are respectively connected with two ends of the pipeline III to be monitored. The pipeline III to be monitored can be a pressure pipeline or a pressure pipeline carried by a container or equipment. In this embodiment, the pipeline III to be monitored is a pressure pipeline, and 4 protection pull rods II are uniformly installed around the pressure pipeline. And a monitoring unit I is arranged in the middle of each protection pull rod II.
The monitoring unit I comprises a first pull rod connecting flange 21, a second pull rod connecting flange 22, a first mounting flange 31, a second mounting flange 32, a fixing bolt 4, a locking nut 51 and a stress sensor 6; the protection pull rod II is divided into two sections, a first pull rod connecting flange 21 is connected with a first protection pull rod 11, a second pull rod connecting flange 22 is connected with a second protection pull rod 12, the stress sensor 6 is arranged between the first mounting flange 31 and the second mounting flange 32, and fixed connection is realized between the first pull rod connecting flange 21 and the second mounting flange 32 and between the second pull rod connecting flange 22 and the first mounting flange 31 through the matching of the fixing bolt 4 and the locking nut 51.
The stress sensor 6 is a pressure type weighing sensor. The measuring range of the pressure type weighing sensor can be as high as 5 multiplied by 10 6 Newton. And the middle of each protective pull rod II is provided with a pressure type weighing sensor with the same model, the pressure type weighing sensor transmits a detection signal to an upper computer, and the sum of the sensors is pressure pipeline stress simulation data. The data of each protection pull rod II initial display sensor is kept consistent. The monitoring unit I is not limited by the installation of the protection pull rod II, and the protection pull rod II can be installed in parallel with the pipeline to be monitored and can also be installed in a diagonal pulling way.
In the embodiment, a pressure type stress sensor is arranged in a reinforced protection pull rod of a pressure pipeline, a container, equipment and the like in an intervening flange and bolt combined structure, the condition of overlarge stress change of the pull rod is monitored in real time, an equipment stress real-time monitoring model is established by combining calculation, the corresponding equipment operation condition is accurately mastered, the process characteristics of equipment operation can be combined, the stress fluctuation rule corresponding to production operation is mastered, the stress increase trend is prejudged, the equipment operation parameters are regulated and controlled in a targeted and accurate manner, the effective control of stress change is realized, the stress impact load is reduced, the safe and stable operation of the equipment is ensured, the fatigue load of the equipment is reduced, the service life of the equipment is prolonged, the intrinsic safety of high-quality development is really realized, and real-time and accurate large-mileage stress data are collected for intelligent control.
Example 2
Referring to fig. 2, in the present embodiment, the first protection pull rod 11 and the second protection pull rod 12 are circular members, and the first pull rod connecting flange 21 and the first protection pull rod 11 are connected by a thread, so that adjustment is facilitated. The fixing bolt 4 passes through the first pull rod connecting flange 21 and the second mounting flange 32 and is fixedly connected through the locking nut 51.
The second pull rod connecting flange 22 and the second protection pull rod 12 are in threaded connection, so that adjustment is facilitated. The fixing bolt 4 passes through the second pull rod connecting flange 22 and the first mounting flange 31 and is fixedly connected through the locking nut 51.
The stress sensor 6 is arranged between the first mounting flange 31 and the second mounting flange 32.
The flange holes formed in the first pull rod connecting flange 21, the second pull rod connecting flange 22, the first mounting flange 31 and the second mounting flange 32 are even and uniformly arranged; the fixing bolts 4 for connecting the first pull rod connecting flange 21 and the second mounting flange 32 penetrate through odd-numbered flange holes; correspondingly, the fixing bolts 4 for connecting and fixing the second tie rod connecting flange 22 and the first mounting flange 31 pass through the even-numbered flange holes, and vice versa. The fixing bolts 4 are alternately and uniformly arranged, and the stress of the stress sensor 6 is ensured to be uniform.
When in actual use, all fixing bolts 4 need to be fastened to the stress sensor 6 for data display, and the adjusting nuts 52 are arranged, and the pressure type weighing sensor is firmly fixed by matching the adjusting nuts with the locking nuts.
It should be noted that the flange structures of the first pull rod connecting flange 21, the second pull rod connecting flange 22, the first mounting flange 31 and the second mounting flange 32 are not limited to be circular, and may be regular triangle, square or regular polygon, as long as the symmetrical stagger does not affect the uniform arrangement of the fixing bolts 4 and the uniform stress of the pressure type weighing sensor is ensured.
Example 3
According to the method for adjusting the real-time stress of the pipeline, the stress of the pipeline III to be monitored is monitored by using the device in the embodiment 2, the opening and closing degree and the opening and closing speed of a pipeline valve are controlled according to a monitoring result, and the real-time stress of the pipeline is adjusted. The method comprises the following specific steps:
step one, adjusting a locking nut 51 and an adjusting nut 52, fastening a fixing bolt 4 to a stress sensor 6 for data display, and keeping the initial data of the stress sensor 6 on each protection pull rod II consistent;
step two, under the normal operation condition of the pipeline III to be monitored, the stress of the pull rod is calculated1.3 times, adjusting the fixed bolt 4, recording the stress data of all the stress sensors 6, and recording the stress data as F First stage ；
Step three, recording the stress data of all the stress sensors 6 under the condition that the pipeline III to be monitored stops running, and recording the stress data as F Stop ；
Step four, calculating the calibration stress F of the protective pull rod II Sign board ＝F First stage -F Stop ；
Fifthly, the pipeline III to be monitored returns to normal operation, the fixing bolt 4 is adjusted, and the stress data of the stress sensor 6 is displayed as F Sign board ；
Step six, when the working state of the pipeline III to be monitored changes, F is used Sign board As a standard, according to the real-time display data on the stress sensor 6 and F Sign board The opening and closing degree and the opening and closing speed of the pipeline valve are adjusted.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. The pipeline real-time stress monitoring device comprises a protection pull rod (II), wherein the protection pull rod (II) is arranged along the axial direction of a pipeline (III) to be monitored, and two ends of the protection pull rod (II) are respectively connected with two ends of the pipeline (III) to be monitored; the method is characterized in that: the device is characterized by further comprising a monitoring unit (I), wherein the monitoring unit (I) comprises a first pull rod connecting flange (21), a second pull rod connecting flange (22), a first mounting flange (31), a second mounting flange (32), a fixing bolt (4), a locking nut (51) and a stress sensor (6); protection pull rod (II) divide into two sections, and first protection pull rod (11) are connected in first pull rod flange (21), and second protection pull rod (12) are connected in second pull rod flange (22), stress sensor (6) set up between first mounting flange (31), second mounting flange (32), and between first pull rod flange (21) and second mounting flange (32), realize fixed connection through fixing bolt (4), lock nut (51) cooperation between second pull rod flange (22) and first mounting flange (31).
2. The real-time stress monitoring device for the pipeline according to claim 1, wherein: 2-8 protection pull rods (II) are uniformly arranged on the pipeline (III) to be monitored along the circumferential direction of the pipeline; each protection pull rod (II) is provided with a monitoring unit (I).
3. The pipeline real-time stress monitoring device of claim 2, wherein: the stress sensor (6) adopts a pressure type weighing sensor, the stress sensor (6) is connected with an upper computer, and the stress sensor (6) transmits a detection signal to the upper computer.
4. A pipeline real-time stress monitoring device according to any one of claims 1 to 3, characterized in that: the first protection pull rod (11) and the second protection pull rod (12) are round pieces, the positions where the first protection pull rod (11) and the second protection pull rod (12) are connected with the first pull rod connecting flange (21) and the second pull rod connecting flange (22) are provided with threaded structures, and the first pull rod connecting flange (21) is in threaded connection with the first protection pull rod (11) and the second pull rod connecting flange (22) is in threaded connection with the second protection pull rod (12).
5. The pipeline real-time stress monitoring device of claim 4, wherein: the flange holes formed in the first pull rod connecting flange (21), the second pull rod connecting flange (22), the first mounting flange (31) and the second mounting flange (32) are even and uniformly arranged; fixing bolts (4) for connecting the first pull rod connecting flange (21) and the second mounting flange (32) penetrate through odd-numbered flange holes; correspondingly, the fixing bolts (4) for connecting and fixing the second pull rod connecting flange (22) and the first mounting flange (31) penetrate through even-numbered flange holes, and vice versa.
6. The pipeline real-time stress monitoring device of claim 5, wherein: the flange structures of the first pull rod connecting flange (21), the second pull rod connecting flange (22), the first mounting flange (31) and the second mounting flange (32) are circular, regular triangular, square or regular polygonal.
7. The real-time stress monitoring device of claim 6, wherein: the pipeline (III) to be monitored is an independent pressure pipeline or a pressure pipeline on a container or equipment, the monitoring unit (I) is not limited by the installation of the protection pull rod (II), and the protection pull rod (II) can be installed in parallel with the pipeline to be monitored and can also be installed in a diagonal pulling mode.
8. The pipeline real-time stress monitoring device of claim 7, wherein: the monitoring unit (I) is further provided with an adjusting nut (52), the adjusting nut (52) is matched with the locking nut (51) to adjust stress borne by the stress sensor (6).
9. A real-time stress adjusting method for a pipeline is characterized by comprising the following steps: the device of any one of claims 1 to 8 is used for monitoring the stress of the pipeline (III) to be monitored, mastering the stress fluctuation rule corresponding to production operation according to the monitoring result, and pertinently controlling the opening and closing degree and the opening and closing speed of the pipeline valve to adjust the real-time stress of the pipeline.
10. The real-time stress adjustment method for the pipeline according to claim 9, comprising the steps of:
step one, adjusting a locking nut (51) and an adjusting nut (52), fastening a fixing bolt (4) to a stress sensor (6) for data display, and keeping the initial data of the stress sensor (6) on each protection pull rod (II) consistent;
step two, under the normal operation condition of the pipeline (III) to be monitored, adjusting the fixing bolts (4) according to the calculated stress of the pull rod which is 1.3 times that of the pull rod, recording the stress data of all the stress sensors (6), and recording the stress data as F First stage ；
Step three, the pipeline to be monitored(III) recording the stress data of all the stress sensors (6) under the condition of stopping running, and recording the data as F Stop ；
Step four, calculating the calibrated stress F of the protective pull rod (II) Sign board ＝F First stage -F Stop ；
Fifthly, the pipeline (III) to be monitored is recovered to normal operation, the fixing bolt (4) is adjusted, and the stress data of the stress sensor (6) is displayed as F Sign ；
Step six, when the working state of the pipeline (III) to be monitored changes, F is used Sign board As a standard, according to the real-time display data on the stress sensor (6) and F Sign board The opening and closing degree and the opening and closing speed of the pipeline valve are adjusted.
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| CN202210745895.6A CN115014612B (en) | 2022-06-29 | 2022-06-29 | Pipeline real-time stress adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210745895.6A CN115014612B (en) | 2022-06-29 | 2022-06-29 | Pipeline real-time stress adjusting method |
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| CN115014612A true CN115014612A (en) | 2022-09-06 |
| CN115014612B CN115014612B (en) | 2024-02-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116728582A (en) * | 2023-05-12 | 2023-09-12 | 中铁四局集团有限公司 | Concrete pouring system with residual material recycling function and pouring method |
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