CN115370969A - Safety evaluation system and method for high-temperature pressure pipeline - Google Patents
Safety evaluation system and method for high-temperature pressure pipeline Download PDFInfo
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- 238000004364 calculation method Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000012502 risk assessment Methods 0.000 claims abstract description 9
- 239000000523 sample Substances 0.000 claims abstract description 4
- 230000009193 crawling Effects 0.000 claims description 111
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004523 catalytic cracking 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
- F17D5/00—Protection or supervision of installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
- F16M11/425—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels along guiding means
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Abstract
The invention discloses a safety evaluation system and a method for a high-temperature pressure pipeline, wherein the method comprises the following steps: the walking device drives the stress detection device to move on the high-temperature pressure pipeline, the detection position and the detection angle of a detection probe of the stress detector are adjusted through the stress posture adjusting mechanism, so that the axial stress and the circumferential stress on the high-temperature pressure pipeline are detected, the detected detection data are uploaded to the control processing device through the data transmission module, the control processing device analyzes and calculates the detection data information, the stress parameters of the high-temperature pressure pipeline are obtained, and the stress parameters are further uploaded to a database of the risk assessment system; inputting basic parameters of a high-temperature pressure pipeline to be evaluated in a risk evaluation system and storing the basic parameters in a database; and the risk evaluation system automatically evaluates the safety of the high-temperature pressure pipeline through the established risk evaluation calculation model and sends the evaluation result to a user.
Description
Technical Field
The invention belongs to the field of pipeline detection, and particularly relates to a safety evaluation system and method for a high-temperature pressure pipeline.
Background
The main process temperature range of a typical oil refining process in a petrochemical enterprise is between 200 and 550 ℃, the process temperature of a catalytic cracking and coking part reaches 700 to 800 ℃, a pressure pipeline is in service in a high-temperature environment for a long time, the creep damage phenomenon is easy to occur, and if the pipeline has certain standard exceeding defects, along with creep crack expansion, leakage and explosion accidents are easy to occur. Therefore, it is very important to evaluate the safety of the in-service high-temperature pressure pipeline.
Based on JB/T12746-2015 'method for evaluating safety of high-temperature pressure pipelines and valves containing defects' and GB/T19624-2019 'safety evaluation of pressure vessels containing defects in use', safety evaluation work can be carried out on high-temperature pressure pipelines containing defects in service, but most inspectors conservatively adopt a repair or replacement strategy for the defects exceeding standards, and rarely carry out safety evaluation on the pipelines. The method is mainly characterized in that the safety evaluation of the high-temperature pressure pipeline with the defects in JB/T12746 has the problems of strong theoretical performance, complex evaluation process, high requirement on comprehensive capacity of evaluation personnel and the like, and the safety evaluation of the high-temperature pressure pipeline with the defects cannot be widely carried out in a special inspection mechanism. With the advance of time, the creep phenomenon of the high-temperature pressure pipeline is more and more obvious, and the probability of creep fracture of the high-temperature pressure pipeline containing defects is increased. Judging whether the manufacturing defects, the defects or the damages generated in the service process of the high-temperature pressure pipeline containing the defects threaten the operation safety of the high-temperature pressure pipeline, and how to effectively evaluate the safety condition of the high-temperature pressure pipeline is the key and difficult point of the future inspection work.
However, most inspectors conservatively adopt repair or replacement strategies for the out-of-standard defects of the high-temperature pressure pipeline, the safety evaluation is rarely carried out on the out-of-standard defects, and part of the out-of-standard defects are allowed to exist through the safety evaluation. In addition, the JB/T12746 and GB/T19624 have strong theoretical performance, complex evaluation process and higher requirements on the comprehensive capacity of an evaluator in the safety evaluation of the high-temperature pressure pipeline with the defects, and the safety evaluation of the high-temperature pressure pipeline with the defects in a special inspection mechanism is widely difficult.
Disclosure of Invention
The invention provides a safety evaluation system for a high-temperature pressure pipeline, aiming at overcoming the defects in the prior art, wherein the safety evaluation system can walk on the high-temperature pressure pipeline, automatically detect stress parameters at all positions of the high-temperature pressure pipeline and automatically analyze the safety condition of the high-temperature pressure pipeline by combining with other basic data.
Another object of the present invention is to provide a safety assessment method for high temperature pressure pipelines.
The technical scheme for solving the technical problems is as follows:
a safety evaluation system for a high-temperature pressure pipeline comprises a stress detection device, a walking device for driving the stress detection device to crawl on the high-temperature pressure pipeline, a control processing device and a risk evaluation system, wherein,
the stress detection device comprises a stress detector and a stress posture adjusting mechanism for adjusting the detection position of the stress detector so as to realize the axial and circumferential stress detection of the high-temperature pressure pipeline;
the walking device comprises a crawling mechanism, the crawling mechanism comprises a support, a first clamping mechanism and a second clamping mechanism which are arranged on the support, and a linear driving mechanism which is used for driving the first clamping mechanism to move along the axis direction of the high-temperature pressure pipeline, wherein the first clamping mechanism and the second clamping mechanism are used for clamping and loosening the high-temperature pressure pipeline; the stress detection device is fixedly connected with the first clamping mechanism through a connecting seat;
the control processing device is used for analyzing and calculating the detection data information obtained in the stress detection device to obtain the stress parameter of the high-temperature pressure pipeline;
and the risk evaluation system automatically calls the basic data in the database for analysis and processing through the established risk evaluation calculation model, performs safety evaluation on the high-temperature pressure pipeline, and sends the evaluation result to a user.
Preferably, the two groups of crawling mechanisms are respectively a first crawling mechanism and a second crawling mechanism, wherein the linear driving mechanism of the first crawling mechanism is used for driving the first clamping mechanism to move and driving the stress detection device to move; a rotary driving mechanism for driving the second crawling mechanism or the first crawling mechanism and the stress detection device to rotate around the axis direction of the high-temperature pressure pipeline is arranged between the second crawling mechanism and the first crawling mechanism; when the first clamping mechanism and the second clamping mechanism in the first crawling mechanism clamp the high-temperature pressure pipeline and the first clamping mechanism and the second clamping mechanism in the second crawling mechanism release the high-temperature pressure pipeline, the rotary driving mechanism is used for driving the second crawling mechanism to rotate around the axis of the high-temperature pressure pipeline; when the first clamping mechanism and the second clamping mechanism in the second crawling mechanism clamp the high-temperature pressure pipeline and the first clamping mechanism and the second clamping mechanism in the first crawling mechanism loosen the high-temperature pressure pipeline, the rotary driving mechanism is used for driving the first crawling mechanism and the stress detection device to rotate around the axis of the high-temperature pressure pipeline.
Preferably, the rotary driving mechanism comprises a support frame arranged on the connecting seat of the second crawling mechanism and a rotary motor arranged on the support frame, wherein a main shaft of the rotary motor is provided with a rotary gear, a support frame of the first crawling mechanism is provided with an arc-shaped guide block, an arc-shaped rack meshed with the rotary gear is arranged in the middle of the arc-shaped guide block, and the arc-shaped rack extends along the length direction of the arc-shaped guide block; the support frame is provided with an arc-shaped guide sleeve, the radian of the arc-shaped guide sleeve is consistent with that of the arc-shaped guide block, and the arc-shaped guide sleeve is arranged on the arc-shaped guide block; the arc guide sleeve and the arc guide block can move along the extension direction of the arc guide sleeve or the arc guide block.
Preferably, a swing driving mechanism for driving the first crawling mechanism and the stress detection device or the second crawling mechanism and the rotation driving mechanism to swing is further arranged between the rotation driving mechanism and the first crawling mechanism, wherein when the first clamping mechanism and the second clamping mechanism in the first crawling mechanism clamp the high-temperature pressure pipeline and the first clamping mechanism and the second clamping mechanism in the second crawling mechanism release the high-temperature pressure pipeline, the swing driving mechanism is used for driving the second crawling mechanism and the rotation driving mechanism to swing; when the first clamping mechanism and the second clamping mechanism in the second crawling mechanism clamp the high-temperature pressure pipeline and the first clamping mechanism and the second clamping mechanism in the first crawling mechanism loosen the high-temperature pressure pipeline, the swing driving mechanism is used for driving the first crawling mechanism and the stress detection device to swing.
Preferably, the swing driving mechanism comprises a swing seat and a swing motor arranged on the swing seat, wherein the arc-shaped guide block is arranged on the swing seat and extends out of the swing seat; and a main shaft of the swing motor is connected with a rotating seat arranged on a support in the first crawling mechanism and used for driving the support in the first crawling mechanism to rotate.
Preferably, the swing driving mechanism further comprises a third clamping mechanism arranged on the swing seat and used for clamping the high-temperature pressure pipeline; when the swing driving mechanism works, the third clamping mechanism clamps the high-temperature pressure pipeline.
Preferably, the stress posture adjusting mechanism comprises a detection seat, an arc-shaped guide rail arranged on the detection seat, and a rotation driving mechanism for driving the arc-shaped guide rail to rotate, wherein a rack is arranged on the upper side of the arc-shaped guide rail, and the rack extends along the extension direction of the arc-shaped guide rail; the stress detector is installed on the arc-shaped sliding block, the arc-shaped sliding block is installed in the arc-shaped guide rail, and a traveling mechanism used for driving the arc-shaped sliding block to move in the arc-shaped guide rail is arranged on the arc-shaped sliding block, wherein the traveling mechanism comprises a traveling motor arranged on the arc-shaped sliding block and a traveling gear arranged on a main shaft of the traveling motor, and the traveling gear is meshed with the rack.
Preferably, the arc-shaped guide rail and the arc-shaped sliding block are concentric, and the centers of the arc-shaped guide rail and the arc-shaped sliding block are both located on the axis of the high-temperature pressure pipeline.
Preferably, the first clamping mechanism, the second clamping mechanism and the third clamping mechanism have the same structure and respectively comprise a clamping jaw and a clamping cylinder for driving the clamping jaw to clamp or loosen the high-temperature pressure pipeline; the linear driving mechanism adopts a mode of combining a motor and a screw rod transmission mechanism, one side or two sides of a screw rod in the screw rod transmission mechanism are provided with linear guide mechanisms, and the linear guide mechanisms adopt a mode of combining a slide rod and a slide sleeve/slide hole.
A safety assessment method for a high-temperature pressure pipeline comprises the following steps:
(1) The walking device drives the stress detection device to move on the high-temperature pressure pipeline, the detection position and the detection angle of a detection probe of the stress detector are adjusted through the stress posture adjusting mechanism, so that the axial stress and the circumferential stress on the high-temperature pressure pipeline are detected, the detected detection data are uploaded to the control processing device through the data transmission module, and the control processing device analyzes and calculates the detection data information to obtain the stress parameters of the high-temperature pressure pipeline; the stress parameters comprise primary stress and secondary stress of the high-temperature pressure pipeline during detection; the control processing device further uploads the stress parameters to a database of the risk assessment system;
(2) Inputting basic parameters of the high-temperature pressure pipeline to be evaluated in the risk evaluation system and storing the basic parameters in a database;
(3) And the risk evaluation system automatically calls the basic data in the database for analysis and processing through the established risk evaluation calculation model, performs safety evaluation on the high-temperature pressure pipeline, and sends the evaluation result to the user.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the safety evaluation system for the high-temperature pressure pipeline drives the stress detection device to move on the high-temperature pressure pipeline through the crawling device, so that the stress detection device collects stress values of all positions in the high-temperature pressure pipeline; and analyzing and processing the high-temperature pressure pipeline by the control processing device to obtain stress parameters, uploading the obtained stress parameters to a risk evaluation system, and automatically analyzing the safety condition of the high-temperature pressure pipeline by the risk evaluation system.
2. The safety evaluation system for the high-temperature pressure pipeline can automatically detect the stress value of the high-temperature pressure pipeline, replaces the traditional manual detection, has higher automation degree, simultaneously improves the detection efficiency and reduces the detection cost.
3. In the safety evaluation method for the high-temperature pressure pipeline, only the basic parameters need to be input into the risk evaluation system by a worker, and the risk evaluation system can automatically evaluate the safety of the high-temperature pressure pipeline according to a safety judgment method in the mechanical industry standard (JB/T12746-2015) -high-temperature pressure pipeline and valve safety evaluation method for the people's republic of China.
4. The safety evaluation method for the high-temperature pressure pipeline can quickly obtain the safety evaluation result of the high-temperature pressure pipeline containing the defects, so that whether the defects or damages generated in the manufacturing process and the service process threaten the operation safety of the high-temperature pressure pipeline is judged, and efficient and accurate safety evaluation is realized; the technical support is provided for the subsequent reconstruction, repair, scrapping, replacement or continuous operation of the high-temperature pressure pipeline, the cost of an enterprise can be saved to a certain extent, the construction period is shortened, the risk is reduced, the operation safety of special equipment is powerfully guaranteed, and the social benefit is very important.
Drawings
Fig. 1 is a schematic structural view of a stress detection apparatus and a creep apparatus in a safety evaluation system for high-temperature pressure pipelines according to the present invention.
Fig. 2 to 5 are schematic perspective views of four different perspectives of a stress detection device and a crawling device in the safety assessment system for high-temperature pressure pipelines according to the present invention.
Fig. 6 and 7 are schematic perspective views of the rotary drive mechanism and the swing drive mechanism from two different viewing angles.
Fig. 8 is a schematic perspective view of a stress detection device.
Fig. 9 is a block diagram illustrating a safety evaluation system for a high-temperature pressure pipe according to the present invention.
FIG. 10 is a schematic flow chart of a prior art "mechanical industry Standard of the people's republic of China (JB/T12746-2015) -Defect-containing high-temperature pressure pipeline and valve safety evaluation method".
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Referring to fig. 1 to 10, the safety assessment system for a high-temperature pressure pipeline of the present invention includes a stress detection device 1, a traveling device for driving the stress detection device 1 to crawl on the high-temperature pressure pipeline, a control processing device, and a risk assessment system.
Referring to fig. 1 to 10, the stress detection apparatus 1 includes a stress detector 106 and a stress posture adjustment mechanism for adjusting a detection position of the stress detector 106 to achieve stress detection in the axial direction and the circumferential direction of the high-temperature pressure pipeline;
referring to fig. 1 to 10, the walking device comprises a crawling mechanism, the crawling mechanism comprises a support 6, a first clamping mechanism 11 and a second clamping mechanism 10 which are arranged on the support 6, and a linear driving mechanism for driving the first clamping mechanism 11 to move along the axial direction of the high-temperature pressure pipeline, wherein both the first clamping mechanism 11 and the second clamping mechanism 10 are used for clamping and loosening the high-temperature pressure pipeline; the stress detection device 1 and the first clamping mechanism 11 are fixedly connected through a connecting seat;
wherein, the crawling mode of the crawling mechanism is as follows:
the second clamping mechanism 10 tightly holds the high-temperature pressure pipeline, then the first clamping mechanism 11 loosens the high-temperature pressure pipeline, and then the linear driving mechanism drives the first clamping mechanism 11 to move forwards; then the first clamping mechanism 11 clasps the high-temperature pressure pipeline tightly, and the linear driving mechanism resets, so that the bracket 6 and the second clamping mechanism 10 arranged on the bracket 6 move forwards, and the crawling mechanism crawls on the high-temperature pressure pipeline.
Referring to fig. 1 to 10, the crawling mechanisms are two groups, namely a first crawling mechanism 2 and a second crawling mechanism 5, wherein the linear driving mechanism of the first crawling mechanism 2 is used for driving the first clamping mechanism 11 to move and driving the stress detection device 1 to move; a rotary driving mechanism 4 for driving the second crawling mechanism 5 or the first crawling mechanism 2 and the stress detection device 1 to rotate around the axis direction of the high-temperature pressure pipeline is arranged between the second crawling mechanism 5 and the first crawling mechanism 2; when the first clamping mechanism 11 and the second clamping mechanism 10 in the first crawling mechanism 2 clamp the high-temperature pressure pipeline and the first clamping mechanism 11 and the second clamping mechanism 10 in the second crawling mechanism 5 release the high-temperature pressure pipeline, the rotary driving mechanism 4 is used for driving the second crawling mechanism 5 to rotate around the axis of the high-temperature pressure pipeline; when the first clamping mechanism 11 and the second clamping mechanism 10 in the second crawling mechanism 5 clamp the high-temperature pressure pipeline and the first clamping mechanism 11 and the second clamping mechanism 10 in the first crawling mechanism 2 loosen the high-temperature pressure pipeline, the rotary driving mechanism 4 is used for driving the first crawling mechanism 2 and the stress detection device 1 to rotate around the axis of the high-temperature pressure pipeline.
The rotary driving mechanism 4 comprises a support frame arranged on a connecting seat of the second crawling mechanism 5 and a rotary motor 401 arranged on the support frame, wherein a rotary gear 402 is arranged on a main shaft of the rotary motor 401, an arc-shaped guide block 403 is arranged on a support 6 of the first crawling mechanism 2, an arc-shaped rack meshed with the rotary gear 402 is arranged in the middle of the arc-shaped guide block 403, and the arc-shaped rack extends along the length direction of the arc-shaped guide block 403; an arc guide sleeve 404 is arranged on the support frame, the radian of the arc guide sleeve 404 is consistent with that of the arc guide block 403, and the arc guide sleeve 404 is arranged on the arc guide block 403; the arc guide sleeve 404 and the arc guide block 403 can move along the extending direction of the arc guide sleeve 404 or the arc guide block 403.
Through above-mentioned setting, its aim at:
(1) When the stress detection is required to be performed on the circumferential surface of the high-temperature pressure pipeline, the first clamping mechanism 11 and the second clamping mechanism 10 in the second crawling mechanism 5 tightly hold the high-temperature pressure pipeline, and then the first clamping mechanism 11 and the second clamping mechanism 10 in the first crawling mechanism 2 loosen the high-temperature pressure pipeline. Then the rotating gear 402 is driven by the rotating motor 401 to rotate, so as to drive the arc-shaped guide block 403 to move along the arc of the arc-shaped guide sleeve 404 in the arc-shaped guide sleeve 404, so that the first clamping mechanism 11 and the stress detection device 1 connected with the first clamping mechanism rotate around the axis of the high-temperature pressure pipeline, for example, from the upper side to the lower side of the high-temperature pressure pipeline; the stress detection device 1 can detect the stress of the high-temperature pressure pipeline in the circumferential direction.
(2) The rotary driving mechanism 4 is used for driving the second crawling mechanism 5 to rotate around the axis of the high-temperature pressure pipeline when the first clamping mechanism 11 and the second clamping mechanism 10 in the first crawling mechanism 2 clamp the high-temperature pressure pipeline and the first clamping mechanism 11 and the second clamping mechanism 10 in the second crawling mechanism 5 release the high-temperature pressure pipeline; when the first clamping mechanism 11 and the second clamping mechanism 10 in the second crawling mechanism 5 clamp the high-temperature pressure pipeline and the first clamping mechanism 11 and the second clamping mechanism 10 in the first crawling mechanism 2 release the high-temperature pressure pipeline, the rotary driving mechanism 4 is used for driving the first crawling mechanism 2 and the stress detection device 1 to rotate around the axis of the high-temperature pressure pipeline. Therefore, the first crawling mechanism 2 and the second crawling mechanism 5 can be rotated independently in the above manner to avoid obstacles.
Referring to fig. 1 to 10, a swing driving mechanism 3 for driving the first crawling mechanism 2 and the stress detection device 1 or the second crawling mechanism 5 and the rotation driving mechanism 4 to swing is further disposed between the rotation driving mechanism 4 and the first crawling mechanism 2, wherein when the first clamping mechanism 11 and the second clamping mechanism 10 in the first crawling mechanism 2 clamp the high-temperature pressure pipeline and the first clamping mechanism 11 and the second clamping mechanism 10 in the second crawling mechanism 5 release the high-temperature pressure pipeline, the swing driving mechanism 3 is used for driving the second crawling mechanism 5 and the rotation driving mechanism 4 to swing; when the first clamping mechanism 11 and the second clamping mechanism 10 in the second crawling mechanism 5 clamp the high-temperature pressure pipeline and the first clamping mechanism 11 and the second clamping mechanism 10 in the first crawling mechanism 2 release the high-temperature pressure pipeline, the swing driving mechanism 3 is used for driving the first crawling mechanism 2 and the stress detection device 1 to swing;
the swing driving mechanism 3 comprises a swing seat and a swing motor 301 arranged on the swing seat, wherein the arc guide block 403 is mounted on the swing seat and extends out of the swing seat; the main shaft of the swing motor 301 is connected to a rotating base 302 installed on the support 6 in the first crawling mechanism 2, and is used for driving the support 6 in the first crawling mechanism 2 to rotate.
With the above arrangement, the object is to;
the first crawling mechanism 2 and the stress detection device 1 are made to swing or the second crawling mechanism 5 and the rotary driving mechanism 4 are made to swing by arranging the swing driving mechanism 3; when the crawler device moves to a non-horizontal section, for example, a vertical section of 90 degrees, in the high temperature pressure pipe, the first gripping mechanism 11 and the second gripping mechanism 10 of the second crawler mechanism 5 may clasp the high temperature pressure pipe. Then first fixture 11 and second fixture 10 in the first mechanism of crawling 2 loosen high temperature pipeline under pressure, then swing motor 301 drives support 6 among the first mechanism of crawling 2 rotates, drives with this first mechanism of crawling 2 with stress detection device 1 swings, makes first mechanism of crawling 2 with the second mechanism of crawling 5 is 90 degrees contained angles, then crawls the second in the device and crawls 5 and drive whole forward motion, makes first fixture 11 and the second fixture 10 in the first mechanism of crawling 2 hold tightly again the vertical section of high temperature pipeline under pressure. Then, first fixture 11 and second fixture 10 among the second crawl mechanism 5 loosen high temperature pipeline under pressure, first crawl mechanism 2 among the crawl device is responsible for driving the utility model discloses a crawl device moving as a whole, treat to rise to sufficient high back, first fixture 11 and second fixture 10 among the first crawl mechanism 2 embrace high temperature pipeline under pressure once more, swing motor 301 rotates, thereby make second crawl mechanism 5 truns into vertical state by the horizontal state, and first fixture 11 and second fixture 10 among this second crawl mechanism 5 embrace high temperature pipeline under pressure once more, and finally, first crawl mechanism 2 and second crawl mechanism 5 crawl once more to realize that the device of crawling climbs vertical section from high temperature pipeline's horizontal segment, be suitable for different angle's pipeline with this. Meanwhile, the rotary driving mechanism 4 is matched, so that stress detection is carried out on different positions of pipelines at different angles.
Referring to fig. 1 to 10, the swing driving mechanism 3 further includes a third clamping mechanism 12 disposed on the swing seat for clamping the high-temperature pressure pipe; when the swing driving mechanism 3 works, the third clamping mechanism 12 clamps the high-temperature pressure pipeline. With the above arrangement, even if the first climbing mechanism 2 or the first clamping mechanism 11 and the second clamping mechanism 10 in the second climbing mechanism 5 do not hold the high-temperature pressure pipeline tightly, the swing driving mechanism 3 can drive the second climbing mechanism 5 or the first climbing mechanism 2 to swing. Further, by providing the third clamping mechanism 12, the supporting force or the holding force can be enhanced.
Referring to fig. 1 to 10, the stress posture adjusting mechanism includes a detection base 101, an arc-shaped guide rail 103 disposed on the detection base 101, and a rotation driving mechanism for driving the arc-shaped guide rail 103 to rotate, wherein the rotation driving mechanism includes a rotation motor 102, the rotation motor 102 is mounted on the detection base 101, and a spindle of the rotation motor 102 is connected to the arc-shaped guide rail 103; a rack is arranged on the upper side of the arc-shaped guide rail 103 and extends along the extending direction of the arc-shaped guide rail 103; the stress detector 106 is installed on an arc-shaped sliding block, the arc-shaped sliding block is installed in the arc-shaped guide rail 103, and a traveling mechanism used for driving the arc-shaped sliding block to move in the arc-shaped guide rail 103 is arranged on the arc-shaped sliding block, wherein the traveling mechanism comprises a traveling motor 105 arranged on the arc-shaped sliding block and a traveling gear 104 arranged on a main shaft of the traveling motor 105, and the traveling gear 104 is meshed with the rack. Through the matching of the rotation driving mechanism and the traveling mechanism, the pressure detector is driven to perform stress detection at each position within the rotation range of the arc-shaped guide rail 103. In addition, the centers of the arc-shaped guide rail 103 and the arc-shaped sliding block are located on the axis of the high-temperature pressure pipeline and are concentric with each other.
Referring to fig. 1 to 10, the first clamping mechanism 11, the second clamping mechanism 10, and the third clamping mechanism 12 have the same structure, and each includes a clamping jaw and a clamping cylinder for driving the clamping jaw to clamp or unclamp the high temperature pressure pipeline; the linear driving mechanism adopts a mode that a motor is combined with the screw rod transmission mechanism, and one side or two sides of a screw rod in the screw rod transmission mechanism are provided with linear guide mechanisms which adopt a mode that a slide rod is combined with a slide sleeve/a slide hole and are used for linearly guiding the connecting seat and ensuring the motion precision of the connecting seat.
Referring to fig. 1 to fig. 10, the control processing device is configured to analyze and calculate detection data information obtained in the stress detection device 1 to obtain a stress parameter of the high-temperature pressure pipeline.
Referring to fig. 1-10, the risk assessment system automatically calls the basic data in the database for analysis and processing through the established risk assessment calculation model, performs security assessment on the high-temperature pressure pipeline, and sends the assessment result to the user.
Referring to fig. 1 to 10, the safety evaluation method for a high temperature pressure pipe of the present invention includes the steps of:
(1) The walking device drives the stress detection device 1 to move on the high-temperature pressure pipeline, the detection position and the detection angle of a detection probe of the stress detector 106 are adjusted through the stress posture adjusting mechanism, so that the axial stress and the circumferential stress on the high-temperature pressure pipeline are detected, the detected detection data are uploaded to the control processing device through the data transmission module, and the control processing device analyzes and calculates the detection data information to obtain the stress parameters of the high-temperature pressure pipeline; the stress parameters comprise primary stress and secondary stress of the high-temperature pressure pipeline during detection; the control processing device further uploads the stress parameters to a database of the risk assessment system;
(2) Inputting basic parameters of the high-temperature pressure pipeline to be evaluated in a risk evaluation system and storing the basic parameters into a database, wherein the basic parameters comprise service life, expected service life, load history, temperature history and the like, and can be implemented by referring to related requirements in the mechanical industry standard of the people's republic of China (JB/T12746-2015) -defect-containing high-temperature pressure pipeline and valve safety evaluation method;
(3) The risk evaluation system automatically calls basic data in a database for analysis and processing through the established risk evaluation calculation model, performs safety evaluation on the high-temperature pressure pipeline and sends an evaluation result to a user;
the risk assessment calculation model is constructed according to a safety assessment method in the mechanical industry standard of the people's republic of China (JB/T12746-2015) -defect-containing high-temperature pressure pipeline and valve safety assessment method), namely, a worker only needs to input corresponding basic parameters into a computer, and the risk assessment calculation model in the computer automatically assesses the safety of the high-temperature pressure pipeline to be detected according to the safety assessment method in the mechanical industry standard of the people's republic of China (JB/T12746-2015) -defect-containing high-temperature pressure pipeline and valve safety assessment method, so that the burden of the worker is relieved, and the efficiency is improved. For example, in a Visual Studio platform, a Visual Studio language is used for carrying out parameterized programming on the safety evaluation process of the high-temperature pressure pipeline with the defects, an interactive and parametric analysis interface is constructed, and the safety evaluation result of the high-temperature pressure pipeline with the defects is rapidly obtained, so that whether the defects or damages generated in the manufacturing process and the service process threaten the operation safety is judged, and efficient and accurate safety evaluation is realized; the technical support is provided for the subsequent reconstruction, repair, scrapping, replacement or continuous operation of the high-temperature pressure pipeline, the cost of an enterprise can be saved to a certain extent, the construction period is shortened, the risk is reduced, the operation safety of special equipment is powerfully guaranteed, and the social benefit is very important.
Finally, the safety evaluation method for the high-temperature pressure pipeline has the following characteristics: (1) And establishing a material mechanical property database such as creep deformation data. (2) And acquiring the stress distribution condition of the pressure pipeline containing the defects under the high-temperature working condition by utilizing finite element analysis software. (3) And on a Visual Studio platform, the calculation process of safety evaluation is modularized, and a user only needs to input parameters, so that the system automatically completes calculation and gives an evaluation result. (4) By prefabricating the pressure pipeline containing the defects, related tests are carried out under the high-temperature operation condition, and the accuracy of stress analysis and safety evaluation of the system is verified.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (10)
1. A safety evaluation system for a high-temperature pressure pipeline is characterized by comprising a stress detection device, a walking device for driving the stress detection device to crawl on the high-temperature pressure pipeline, a control processing device and a risk evaluation system, wherein,
the stress detection device comprises a stress detector and a stress posture adjusting mechanism for adjusting the detection position of the stress detector so as to realize the axial and circumferential stress detection of the high-temperature pressure pipeline;
the walking device comprises a crawling mechanism, the crawling mechanism comprises a support, a first clamping mechanism and a second clamping mechanism which are arranged on the support, and a linear driving mechanism which is used for driving the first clamping mechanism to move along the axis direction of the high-temperature pressure pipeline, wherein the first clamping mechanism and the second clamping mechanism are used for clamping and loosening the high-temperature pressure pipeline; the stress detection device is fixedly connected with the first clamping mechanism through a connecting seat;
the control processing device is used for analyzing and calculating the detection data information obtained in the stress detection device to obtain the stress parameters of the high-temperature pressure pipeline;
and the risk evaluation system automatically calls the basic data in the database for analysis and processing through the established risk evaluation calculation model, performs safety evaluation on the high-temperature pressure pipeline, and sends the evaluation result to a user.
2. The safety assessment system for high-temperature pressure pipelines according to claim 1, wherein the crawling mechanisms are two groups, namely a first crawling mechanism and a second crawling mechanism, wherein the linear driving mechanism of the first crawling mechanism is used for driving the first clamping mechanism to move and driving the stress detection device to move; a rotary driving mechanism for driving the second crawling mechanism or the first crawling mechanism and the stress detection device to rotate around the axis direction of the high-temperature pressure pipeline is arranged between the second crawling mechanism and the first crawling mechanism; when the first clamping mechanism and the second clamping mechanism in the first crawling mechanism clamp the high-temperature pressure pipeline and the first clamping mechanism and the second clamping mechanism in the second crawling mechanism release the high-temperature pressure pipeline, the rotary driving mechanism is used for driving the second crawling mechanism to rotate around the axis of the high-temperature pressure pipeline; when the first clamping mechanism and the second clamping mechanism in the second crawling mechanism clamp the high-temperature pressure pipeline and the first clamping mechanism and the second clamping mechanism in the first crawling mechanism loosen the high-temperature pressure pipeline, the rotary driving mechanism is used for driving the first crawling mechanism and the stress detection device to rotate around the axis of the high-temperature pressure pipeline.
3. The safety assessment system for high-temperature pressure pipelines according to claim 2, wherein the rotary driving mechanism comprises a supporting frame arranged on the connecting seat of the second crawling mechanism and a rotary motor arranged on the supporting frame, wherein a rotary gear is arranged on a main shaft of the rotary motor, an arc-shaped guide block is arranged on a bracket of the first crawling mechanism, an arc-shaped rack meshed with the rotary gear is arranged in the middle of the arc-shaped guide block, and the arc-shaped rack extends along the length direction of the arc-shaped guide block; the support frame is provided with an arc-shaped guide sleeve, the radian of the arc-shaped guide sleeve is consistent with that of the arc-shaped guide block, and the arc-shaped guide sleeve is arranged on the arc-shaped guide block; the arc guide sleeve and the arc guide block can move along the extension direction of the arc guide sleeve or the arc guide block.
4. The safety assessment system for high-temperature pressure pipelines according to claim 2, wherein a swing driving mechanism for driving the first crawling mechanism and the stress detection device or the second crawling mechanism and the rotation driving mechanism to swing is further arranged between the rotation driving mechanism and the first crawling mechanism, wherein when the first clamping mechanism and the second clamping mechanism in the first crawling mechanism clamp the high-temperature pressure pipeline and the first clamping mechanism and the second clamping mechanism in the second crawling mechanism release the high-temperature pressure pipeline, the swing driving mechanism is used for driving the second crawling mechanism and the rotation driving mechanism to swing; when the first clamping mechanism and the second clamping mechanism in the second crawling mechanism clamp the high-temperature pressure pipeline and the first clamping mechanism and the second clamping mechanism in the first crawling mechanism loosen the high-temperature pressure pipeline, the swing driving mechanism is used for driving the first crawling mechanism and the stress detection device to swing.
5. The safety assessment system for high-temperature pressure pipelines according to claim 4, wherein the swing driving mechanism comprises a swing seat and a swing motor arranged on the swing seat, wherein the arc-shaped guide block is mounted on the swing seat and extends out of the swing seat; and a main shaft of the swing motor is connected with a rotating seat arranged on a support in the first crawling mechanism and used for driving the support in the first crawling mechanism to rotate.
6. The safety assessment system for high temperature pressure pipes according to claim 5, wherein said swing driving mechanism further comprises a third clamping mechanism disposed on said swing seat for clamping said high temperature pressure pipe; when the swing driving mechanism works, the third clamping mechanism clamps the high-temperature pressure pipeline.
7. The safety assessment system for high-temperature pressure pipelines according to claim 2, wherein the stress posture adjustment mechanism comprises a detection seat, an arc-shaped guide rail arranged on the detection seat, and a rotation driving mechanism for driving the arc-shaped guide rail to rotate, wherein a rack is arranged on the upper side of the arc-shaped guide rail, and the rack extends along the extension direction of the arc-shaped guide rail; the stress detector is installed on the arc-shaped sliding block, the arc-shaped sliding block is installed in the arc-shaped guide rail, and a traveling mechanism used for driving the arc-shaped sliding block to move in the arc-shaped guide rail is arranged on the arc-shaped sliding block, wherein the traveling mechanism comprises a traveling motor arranged on the arc-shaped sliding block and a traveling gear arranged on a main shaft of the traveling motor, and the traveling gear is meshed with the rack.
8. The safety assessment system for a high-temperature pressure pipeline according to claim 7, wherein the arc-shaped guide rail and the arc-shaped slide block are concentric, and the centers of the two are located on the axis of the high-temperature pressure pipeline.
9. The safety assessment system for high-temperature pressure pipelines according to claim 5, wherein the first clamping mechanism, the second clamping mechanism and the third clamping mechanism are identical in structure and each comprises a clamping jaw and a clamping cylinder for driving the clamping jaw to clamp or unclamp the high-temperature pressure pipeline; the linear driving mechanism adopts a mode of combining a motor and a screw rod transmission mechanism, one side or two sides of a screw rod in the screw rod transmission mechanism are provided with linear guide mechanisms, and the linear guide mechanisms adopt a mode of combining a slide rod and a slide sleeve/slide hole.
10. A safety assessment method for a high-temperature pressure pipeline is characterized by comprising the following steps:
(1) The walking device drives the stress detection device to move on the high-temperature pressure pipeline, the detection position and the detection angle of a detection probe of the stress detector are adjusted through the stress posture adjusting mechanism, so that the axial stress and the circumferential stress on the high-temperature pressure pipeline are detected, the detected detection data are uploaded to the control processing device through the data transmission module, and the control processing device analyzes and calculates the detection data information to obtain the stress parameters of the high-temperature pressure pipeline; the stress parameters comprise primary stress and secondary stress of the high-temperature pressure pipeline during detection; the control processing device further uploads the stress parameters to a database of the risk assessment system;
(2) Inputting basic parameters of the high-temperature pressure pipeline to be evaluated in the risk evaluation system and storing the basic parameters in a database;
(3) And the risk evaluation system automatically calls the basic data in the database for analysis and processing through the established risk evaluation calculation model, performs safety evaluation on the high-temperature pressure pipeline, and sends the evaluation result to the user.
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