CN115014612B - Pipeline real-time stress adjusting method - Google Patents
Pipeline real-time stress adjusting method Download PDFInfo
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- CN115014612B CN115014612B CN202210745895.6A CN202210745895A CN115014612B CN 115014612 B CN115014612 B CN 115014612B CN 202210745895 A CN202210745895 A CN 202210745895A CN 115014612 B CN115014612 B CN 115014612B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 12
- 238000012806 monitoring device Methods 0.000 claims abstract description 9
- 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 4
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- 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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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, the first pull rod connecting flange is connected with the first protection pull rod, the second pull rod connecting flange is connected with the second protection pull rod, the stress sensor is arranged between the first installation flange and the second installation flange, and fixed connection is realized between the first pull rod connecting flange and the second installation flange and between the second pull rod connecting flange and the first installation flange through the cooperation of fixing bolts and locking nuts. The invention can monitor the oversized tension change condition of the protective pull rod of the equipment, the container and the pipeline in real time, grasp the stress fluctuation rule corresponding to production operation, so that the stress increase trend can be prejudged, the operation parameters of the equipment can be accurately controlled, the impact stress load can be effectively controlled, and the safe and stable operation of the equipment can be ensured.
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
Along with the continuous development of strong load, high pressure, high speed and rapid flow of modern large-scale industrial production, the running condition of equipment can not be mastered in real time due to the fact that the oversized stress change condition of the equipment, a container and a pipeline can not be monitored in real time, the corresponding stress fluctuation rule of production operation is mastered by combining the process characteristics of the equipment operation, the stress increasing trend is prejudged, the equipment operation parameters are controlled accurately, and stress shock waves are controlled effectively; resulting in equipment failure and severe accidents.
On the other hand, the intelligent manufacturing technology is continuously developed, and the stress variation of the equipment during operation is detected in real time so as to meet the ultra-wide range stress fluctuation detection requirement, provide real-time and accurate large data of stress variation for intelligent control, facilitate accurate regulation and control of equipment operation parameters and safety control of impact stress peaks, and really realize the requirement of high-quality development.
Through searching, chinese patent application number 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 declared by an inventor and comprises an upper pressing plate, a lower pressing plate, a pressing head and a pressure sensor; the working surfaces of the upper pressing plate and the lower pressing plate 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 abutted 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, wherein two sides of 2 sections of H-shaped steel serving as a pull rod between a hot blast main pipe and a hot blast stove are symmetrically arranged, and the 2 sections of H-shaped steel are fixedly connected through a flange; each group of stress devices are symmetrically arranged on the upper and lower sides of the flange, and the stress devices for detecting the hot air outlet of the 2 sets of blast furnace single-row hot air furnaces are fixed together by bolts penetrating through the 2 upper pressing plates, the 2 lower pressing plates and the 2 flanges. This application collects stress variation data and analyzes the data by providing a stress device at the tie rod connection point. However, the 4 sets of stress devices are complex in structure, and the indirectly detected 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 working situations of strong load, high pressure, high speed and rapid flow of the 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 by combining the technical characteristics of the running of the equipment; 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 equipment, a container and a pipeline protection pull rod in real time, master the stress fluctuation rule corresponding to production operation, so that the stress increase trend can be prejudged, the equipment operation parameters can be controlled in a targeted and accurate manner, the impact stress load can be controlled effectively, and the safe and stable operation of the equipment can be ensured.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the invention relates to 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 a first protection pull rod, a second pull rod connecting flange is connected with a second protection pull rod, a stress sensor is arranged between a first installation flange and a second installation flange, and fixed connection is realized between the first pull rod connecting flange and the second installation flange and between the second pull rod connecting flange and the first installation flange through the cooperation of a fixing bolt and a locking nut.
Furthermore, 2 to 8 protection pull rods are uniformly arranged on the pipeline to be monitored along the circumferential direction of the pipeline to be monitored; 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 the upper computer, and the stress sensor transmits detection signals to the upper computer.
Furthermore, the first protection pull rod and the second protection pull rod are round parts, the connection parts of the first protection pull rod and the second protection pull rod and the first pull rod connecting flange and the second pull rod connecting flange are provided with threaded structures, and the first pull rod connecting flange is connected with the first protection pull rod and the second pull rod connecting flange is connected with the second protection pull rod through threads.
Furthermore, the flange holes formed in the first pull rod connecting flange, the second pull rod connecting flange, the first mounting flange and the second mounting flange are even and uniformly arranged; the fixing bolts for connecting the first pull rod connecting flange and the second mounting flange pass through odd-numbered flange holes; correspondingly, the fixing bolts for connecting and fixing the second pull rod connecting flange and the first mounting flange pass through the even-numbered 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 round, regular triangle, square or regular polygon.
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 or can be installed in a diagonal manner.
Furthermore, the monitoring unit is also provided with an adjusting nut which is matched with the locking nut to adjust the stress born by the stress sensor.
According to the method for adjusting the pipeline real-time stress, 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 that the pipeline real-time stress is adjusted.
The invention relates to a pipeline real-time stress adjusting method, which comprises the following steps:
step one, adjusting a locking nut and an adjusting nut, fastening a fixing bolt to a stress sensor to display data, and keeping the initial data of the stress sensor on each protection pull rod consistent;
step two, under the normal running condition of the pipeline to be monitored, adjusting the fixing bolts according to 1.3 times of the calculated pull rod stress, recording stress data of all stress sensors, and recording as F Initially, the method comprises ；
Step three, under the condition that the pipeline to be monitored stops running, the stress data of all stress sensors are recorded and marked as F Stop and stop ；
Step four, calculating the calibration stress F of the protection pull rod Label (C) ＝F Initially, the method comprises -F Stop and stop ；
Fifthly, the pipeline to be monitored resumes normal operation, and the fixing bolts are adjusted to enable stress data of the stress sensor to be displayed as F Label (C) ；
Step six, when the working state of the pipeline to be monitored changes, F is adopted Label (C) As a standard, according to the real-time display data and F on the stress sensor Label (C) And 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) The invention relates to a pipeline real-time stress monitoring device, which is characterized in that a stress sensor is arranged between a first mounting flange and a second mounting flange, and the first pull rod connecting flange and the second mounting flange are fixedly connected through the cooperation of a fixing bolt and a locking nut; the real-time detection of the tensile force born 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 along the circumferential direction of a pipeline to be monitored; each protection pull rod is provided with a monitoring unit, and the sum of a plurality of sensors is used as stress quantity simulation data of a 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 oversized stress change conditions of the first protection pull rod and the second protection pull rod can be monitored in real time, and the oversized stress monitoring requirement is met;
(3) According to the pipeline real-time stress monitoring device, in the reinforced protection pull rod of the pressure pipeline, the container with the pressure pipeline, the equipment and the like, the tension born by the pull rod is monitored in real time by the pressure stress sensor, and the equipment stress model is built by combining calculation, so that the corresponding equipment operation condition during stress change can be accurately known; the process characteristics of equipment operation are combined, the stress fluctuation rule corresponding to production operation is mastered, the stress increase trend is prejudged, the equipment operation parameters are accurately regulated and controlled in a targeted mode, effective control of stress change is achieved, stress impact load is reduced, equipment is ensured to run safely and stably, fatigue load of the equipment is reduced, service life of the equipment is prolonged, intrinsic safety of high-quality development is truly achieved, and real-time and accurate large mileage stress data are acquired for intelligent control.
Drawings
FIG. 1 is a schematic diagram of an installation of a pipeline real-time stress monitoring device according to the present invention;
fig. 2 is a schematic structural diagram of a monitoring unit in the present invention.
Reference numerals in the schematic drawings illustrate:
11. a first protective pull rod; 12. the second protection pull rod; 21. a first pull rod connecting flange; 22. the second pull rod is connected with the flange; 31. a first mounting flange; 32. a second mounting flange; 4. a fixing bolt; 51. a lock nut; 52. adjusting the nut; 6. a stress sensor;
I. a monitoring unit; II. A protective pull rod; III, a pipeline to be monitored.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
Example 1
Referring to fig. 1 and fig. 2, the device for monitoring real-time stress of a pipeline in this embodiment includes a protection pull rod II, where 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 connected with two ends of the pipeline III to be monitored respectively. The pipeline III to be monitored can be a pressure pipeline or a pressure pipeline carried by a container and equipment. In the embodiment, the pipeline III to be monitored is a pressure pipeline, and 4 protection pull rods II are uniformly arranged around the pressure pipeline. 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, the first pull rod connecting flange 21 is connected with the first protection pull rod 11, the second pull rod connecting flange 22 is connected with the second protection pull rod 12, the stress sensor 6 is arranged between the first mounting flange 31 and the second mounting flange 32, and the first pull rod connecting flange 21 and the second mounting flange 32 and the second pull rod connecting flange 22 and the first mounting flange 31 are fixedly connected through the cooperation of the fixing bolts 4 and the locking nuts 51.
The stress sensor 6 is a pressure type weighing sensor. The measuring range of the pressure type weighing sensor can reach 5 multiplied by 10 6 Newtons. And each protective pull rodAnd II, installing a pressure type weighing sensor with the same type in the middle, and transmitting detection signals to an upper computer by the pressure type weighing sensor, wherein the sum of the sensors is pressure pipeline stress amount simulation data. The data of the initial display sensor of each protection pull rod II are 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 a pipeline to be monitored or in a diagonal manner.
In the reinforcing protection pull rod of a pressure pipeline, a container, equipment and the like, the pressure type stress sensor is arranged in an intervention flange and bolt combined structure, the oversized stress change condition of the pull rod is monitored in real time, an equipment stress real-time monitoring model is built 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 accurately regulated and controlled in a targeted manner, the effective control of the 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 truly realized, and real-time and accurate large mileage stress data is acquired for intelligent control.
Example 2
Referring to fig. 2, in this 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 in threaded connection, so as to facilitate adjustment. The fixing bolts 4 pass through the first pull rod connecting flange 21 and the second mounting flange 32 and are connected and fixed through the locking nuts 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 bolts 4 pass through the second pull rod connecting flange 22 and the first mounting flange 31 and are fixedly connected through the locking nuts 51.
The stress sensor 6 is arranged between the first mounting flange 31 and the second mounting flange 32.
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 provided with even and even flange holes; the fixing bolts 4 connecting the first tie bar connecting flange 21 and the second mounting flange 32 pass through the odd-numbered flange holes; correspondingly, the fixing bolts 4 connecting and fixing the second tie bar 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, so that the stress sensor 6 is uniformly stressed.
In actual use, all fixing bolts 4 are required to be fastened to the stress sensor 6 for data display, and an adjusting nut 52 is arranged, so that the pressure type weighing sensor is firmly fixed by matching the adjusting nut with the locking nut.
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 a circle, and may be a regular triangle, a square or a regular polygon, so long as the symmetrical staggering does not affect the uniform arrangement of the fixing bolts 4 and ensures that the stress of the pressure type weighing sensor is uniform.
Example 3
According to the pipeline real-time stress adjusting method, the device described in the embodiment 2 is utilized to monitor the stress of the pipeline III 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 to adjust the pipeline real-time stress. 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 to display data, and keeping the initial data of the stress sensor 6 on each protection pull rod II consistent;
step two, under the normal running condition of the pipeline III to be monitored, adjusting the fixing bolts 4 according to 1.3 times of the calculated pull rod stress, recording the stress data of all stress sensors 6, and recording as F Initially, the method comprises ；
Step three, under the condition that the pipeline III to be monitored stops running, the stress data of all stress sensors 6 are recorded and marked as F Stop and stop ；
Step four, calculating the calibration stress F of the protection pull rod II Label (C) ＝F Initially, the method comprises -F Stop and stop ；
Fifthly, the pipeline III to be monitored is recovered to normal operation, and the fixing bolt 4 is adjusted to enable stressThe stress data of the sensor 6 is shown as F Label (C) ；
Step six, when the working state of the pipeline III to be monitored changes, F is adopted Label (C) As a standard, according to the real-time display data and F on the stress sensor 6 Label (C) And the opening and closing degree and the opening and closing speed of the pipeline valve are adjusted.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (7)
1. A pipeline real-time stress adjusting method is characterized in that a pipeline real-time stress monitoring device is used for monitoring stress of a pipeline (III) to be monitored, a stress fluctuation rule corresponding to production operation is mastered according to a monitoring result, the opening and closing degree and the opening and closing speed of a pipeline valve are controlled in a targeted manner, and the pipeline real-time stress is adjusted; the device comprises a monitoring unit (I) and 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 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), a stress sensor (6) is arranged between a first mounting flange (31) and a 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 cooperation of a fixing bolt (4) and a locking nut (51); the monitoring unit (I) is also provided with an adjusting nut (52), and the adjusting nut (52) is matched with the locking nut (51) to adjust the stress borne by the stress sensor (6); the method comprises the following specific steps:
step one, adjusting a locking nut (51) and an adjusting nut (52), fastening a fixing bolt (4) until the stress sensor (6) has data display, and keeping the initial data of the stress sensor (6) on each protection pull rod (II) consistent;
step two, under the normal running condition of the pipeline (III) to be monitored, adjusting the fixing bolts (4) according to 1.3 times of the calculated pull rod stress, recording the stress data of all stress sensors (6), and recording as F Initially, the method comprises ；
Step three, under the condition that the pipeline (III) to be monitored stops running, recording stress data of all stress sensors (6), and recording as F Stop and stop ；
Step four, calculating the calibration stress F of the protection pull rod (II) Label (C) ＝F Initially, the method comprises -F Stop and stop ；
Fifthly, the pipeline (III) to be monitored is recovered to normal operation, and the fixing bolt (4) is adjusted to enable the stress data of the stress sensor (6) to be displayed as F Label (C) ；
Step six, when the working state of the pipeline (III) to be monitored changes, F is adopted Label (C) As a standard, according to the real-time display data and F on the stress sensor (6) Label (C) And the opening and closing degree and the opening and closing speed of the pipeline valve are adjusted.
2. The method for real-time stress adjustment of a 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 (III); each protection pull rod (II) is provided with a monitoring unit (I).
3. A method of real-time stress adjustment of a pipeline according to claim 2, wherein: the stress sensor (6) adopts a pressure type weighing sensor, the stress sensor (6) is connected with the upper computer, and the stress sensor (6) transmits detection signals to the upper computer.
4. A method of real time stress adjustment of a pipeline according to any of claims 1-3, characterized in that: the first protection pull rod (11) and the second protection pull rod (12) are round parts, threaded structures are arranged at the connection positions of the first protection pull rod (11), the second protection pull rod (12) and the first pull rod connecting flange (21) and the second pull rod connecting flange (22), and the first pull rod connecting flange (21) is connected with the first protection pull rod (11), and the second pull rod connecting flange (22) is connected with the second protection pull rod (12) through threads.
5. The method for real-time stress adjustment of a pipeline according to 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; the fixing bolts (4) for connecting the first pull rod connecting flange (21) and the second mounting flange (32) pass through the 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) pass through the even-numbered flange holes, and vice versa.
6. The method for real-time stress adjustment of a pipeline according to 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 round, regular triangle, square or regular polygon.
7. The method for real-time stress adjustment of a pipeline according to 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 or in a diagonal manner.
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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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| 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 CN115014612A (en) | 2022-09-06 |
| CN115014612B true CN115014612B (en) | 2024-02-02 |
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| CN116728582B (en) * | 2023-05-12 | 2024-10-01 | 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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