CN113884044A - Intelligent detection method and detection device for wall thickness of pressure container - Google Patents
Intelligent detection method and detection device for wall thickness of pressure container Download PDFInfo
- Publication number
- CN113884044A CN113884044A CN202111103130.4A CN202111103130A CN113884044A CN 113884044 A CN113884044 A CN 113884044A CN 202111103130 A CN202111103130 A CN 202111103130A CN 113884044 A CN113884044 A CN 113884044A
- Authority
- CN
- China
- Prior art keywords
- wall thickness
- container
- pressure container
- theoretical
- coordinate system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 81
- 230000007547 defect Effects 0.000 claims abstract description 38
- 239000000523 sample Substances 0.000 claims abstract description 28
- 238000004364 calculation method Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 210000000078 claw Anatomy 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
Abstract
The invention discloses an intelligent detection method and a detection device for the wall thickness of a pressure container, and relates to the technical field of container wall thickness detection equipment, wherein the pressure container wall thickness detection method adopts the comparison of a theoretical wall thickness and an actual wall thickness to obtain the position of the pressure container with a wall thickness defect; the detection device of the intelligent detection method of the wall thickness of the pressure vessel mainly comprises a detection probe, a model input assembly and a control calculation module; the detection method of the intelligent detection device for the wall thickness of the pressure container provided by the invention is convenient for technicians to quickly obtain the real wall thickness defect grade of the corresponding position of the inner wall of the container; the detection device provided by the invention can be used for efficiently detecting the pressure container, and transmitting the obtained actual wall thickness plane coordinate system D2 and theoretical wall thickness plane coordinate system D1 to the processor module through the data interface; after the D1 and D2 coordinate systems are obtained, calculation judgment can be carried out through the processor module, and therefore calculation data are displayed on a display screen and are convenient for comparison of technicians.
Description
Technical Field
The invention relates to the technical field of container wall thickness detection equipment, in particular to an intelligent detection method and a detection device for the wall thickness of a pressure container.
Background
At present, in petroleum, chemical industry and electric power production, metal corrosion is serious, and the corrosion of metal equipment can cause great potential safety hazard to the production. The economic loss caused by corrosion in each industrial country accounts for about 1% -4% of the total value of national production every year, and the pressure container is a special pressure-bearing device with explosion danger, is usually used for storing flammable, explosive and toxic liquid, gas and the like, and has serious consequences once explosion or leakage occurs. In recent years, along with the continuous development of modern industry in China, stricter requirements on the product quality, the structure safety, the use reliability and the like of a pressure container are provided, and the safety and reliability judgment of a fixed pressure container is particularly important. During the application of the fixed pressure container, under the influence of factors such as temperature, medium, pressure and the like, various damages can be caused gradually, and the problem of stress concentration is easy to occur, and the problem is caused because certain residual stress exists in the welding seam of the structure body such as the internal connecting pipe and the end socket, and the like, and the stress concentration is caused due to the fact that the situation is caused by the fact that the situation exists in the welding seam of the internal connecting pipe, the end socket and the like. Generally, damage, fatigue, cracking, corrosion, and the like occur at a stress concentration portion under the combined action of pressure such as temperature and medium, which leads to a great reduction in the usability of the pressure vessel. Therefore, the state sets up 'fixed pressure vessel safety technology supervision' for carrying out standardized detection on the fixed pressure vessel.
The existing nondestructive detection method for the pressure container mainly comprises a TOFD diffraction time difference method ultrasonic detection technology, an acoustic emission detection method, a ray detection method and a magnetic powder detection method. These methods are all used for detecting a certain part of a pressure container or detecting a crack area, but these prior arts can not quickly judge the defect of a fixed pressure container and can not further give out a specific and detailed comprehensive judgment criterion.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an intelligent detection method and a detection device for the wall thickness of a pressure container, which can improve the detection precision and efficiency of the wall thickness of the container.
The technical scheme adopted by the invention for solving the problems is as follows: an intelligent detection method for the wall thickness of a pressure container is characterized by comprising the following steps:
s1, calculating the allowable stress amplitude of a wall material of a pressure container to be detected at a use temperature to obtain the thinnest allowable wall thickness of each theoretical position of the pressure container, and establishing a theoretical wall thickness plane coordinate system D1 of the container;
s2, detecting the wall thickness of each position of the inner wall of the container by using a detection probe, and establishing an actual wall thickness plane coordinate system D2 of the container;
s3, comparing a theoretical wall thickness plane coordinate system with an actual wall thickness plane coordinate system to obtain whether the wall thickness of each position of the inner wall of the container is lower than a theoretical value or not, and marking each defect position P when the actual wall thickness of the inner wall of the container is lower than the lowest allowable theoretical wall thickness value;
s4, judging the defect level of each defect position according to the type, the wall thickness, the pressure bearing capacity, the material, the storage medium and the working environment of the detection container;
and S5, repeatedly detecting the coordinates marked as the defect positions, and confirming that the positions are false defects or real defects.
In the technical scheme, the wall thickness of the pressure container is detected by comparing the theoretical wall thickness with the actual wall thickness so as to obtain the position of the pressure container with the wall thickness defect; establishing a theoretical wall thickness plane coordinate system of the corresponding pressure container before detection, and conveniently comparing; the detection probe can be used for detecting the actual wall thickness of each position of the inner wall of the container, and an actual wall thickness plane coordinate system is obtained in a coordinate establishing mode; comparing the two coordinate systems to judge whether the inner wall of the container has a defect position P with the wall thickness lower than a theoretical value; the defect grade of each defect position can be obtained through detection and judgment, and finally recheck is carried out again, so that technicians can conveniently and quickly obtain the real wall thickness defect grade of the corresponding position of the inner wall of the container.
Further, in S1, after the allowable stress amplitude of the wall material of the pressure vessel to be detected at the use temperature is calculated, a theoretical gridding plane of the theoretical model of the pressure vessel is established, and the minimum allowable wall thickness of each position of the pressure vessel corresponds to the gridding plane to obtain an actual wall thickness plane coordinate system D1 of the vessel.
Further, in S2, the actual gridding plane is obtained after scanning and detecting the plane of the inner wall of the container, and the actual wall thickness plane coordinate system is obtained by combining the wall thickness data of each position inside the container with the actual gridding plane.
Further, in S5, the theoretical wall thickness plane coordinate system is remeasured while the region marked as the defect position is repeatedly inspected.
The invention also aims to provide a detection device for realizing the intelligent detection method for the wall thickness of the pressure container, which comprises a detection probe, a model input assembly and a control calculation module; the detection probe comprises a probe body, and a fixer for controlling the probe body to rotate is hinged to the end part of the probe body; the model input assembly comprises a data input module and a theoretical model scanner, and the data input module and the theoretical model scanner are connected with the control calculation module; the computer control module comprises a machine body, wherein a processor module is arranged in the machine body, and the processor module is connected with a data interface for connecting a detection probe, a data input module and a theoretical model scanner; and the front side of the machine body is also provided with a display screen connected with the processor module.
The detection device provided by the technical scheme can be used for efficiently detecting the pressure container by using the detection method, wherein the probe body can be fixed at the detection position of the corresponding container through the fixer, and the detection angle can be adjusted according to the detection requirement, so that a technician can conveniently obtain an actual wall thickness plane coordinate system D2; the theoretical wall thickness plane coordinate system D1 of the container can be quickly obtained by using the data input module and the theoretical model scanner, and data detected by the probe body, the data input module and the theoretical model scanner can be transmitted to the processor module through the data interface; after the D1 and D2 coordinate systems are obtained, calculation judgment can be carried out through the processor module, and therefore calculation data are displayed on a display screen; and the comparison and calculation of technicians are convenient.
Further, the processor module is connected with a network communication module.
Further, be equipped with power module in the organism, power module is connected with the jack that charges of locating the organism outside.
Furthermore, a fixing claw capable of being fixed at the opening of the container is hinged on the theoretical model scanner.
Compared with the prior art, the invention has the following advantages and effects: the detection method of the intelligent detection device for the wall thickness of the pressure container provided by the invention adopts the comparison of the theoretical wall thickness and the actual wall thickness to obtain the position of the pressure container with the wall thickness defect; the real wall thickness defect grade of the corresponding position of the inner wall of the container can be obtained conveniently and quickly by technicians. The detection device provided by the invention can be used for efficiently detecting the pressure container by using the detection method, and technicians transmit the actual wall thickness plane coordinate system D2 and the theoretical wall thickness plane coordinate system D1 to the processor module through the data interface; after the D1 and D2 coordinate systems are obtained, calculation judgment can be carried out through the processor module, and therefore calculation data are displayed on a display screen; the comparison and calculation of technicians are convenient; has high practical value.
Drawings
Fig. 1 is a detection flow chart of an intelligent detection device for wall thickness of a pressure vessel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Example 1.
As shown in fig. 1, the present embodiment provides an intelligent detection method for wall thickness of a pressure vessel, which includes the following steps;
step 1, calculating the allowable stress amplitude value of the wall material of the pressure container to be detected at the use temperature, obtaining the thinnest allowable wall thickness of each theoretical position of the pressure container, and establishing a theoretical wall thickness plane coordinate system D1 of the container.
And 2, detecting the wall thickness of each position of the inner wall of the container by using the detection probe, and establishing an actual wall thickness plane coordinate system D2 of the container.
And 3, comparing the theoretical wall thickness plane coordinate system with the actual wall thickness plane coordinate system to obtain whether the wall thickness of each position of the inner wall of the container is lower than a theoretical value, and marking each defect position P when the actual wall thickness of the inner wall of the container is lower than the lowest allowable theoretical wall thickness value.
And 4, judging the defect level of each defect position according to the type, the wall thickness, the pressure bearing capacity, the material, the storage medium and the working environment of the detection container.
And 5, repeatedly detecting the position coordinates marked as the defects, and confirming that the position is the false defect or the real defect.
As shown in fig. 1, in the embodiment, the wall thickness of the pressure vessel is detected by comparing the theoretical wall thickness with the actual wall thickness, so as to obtain the position of the pressure vessel with the wall thickness defect; establishing a theoretical wall thickness plane coordinate system of the corresponding pressure container before detection, and conveniently comparing; the detection probe can be used for detecting the actual wall thickness of each position of the inner wall of the container, and an actual wall thickness plane coordinate system is obtained in a coordinate establishing mode; comparing the two coordinate systems to judge whether the inner wall of the container has a defect position P with the wall thickness lower than a theoretical value; the defect grade of each defect position can be obtained through detection and judgment, and finally, rechecking is carried out again, so that technicians can conveniently and quickly obtain the real wall thickness defect grade of the corresponding position of the inner wall of the container.
As shown in fig. 1, in order to improve the detection accuracy, in step 1, after calculating the allowable stress amplitude of the wall material of the pressure vessel to be detected at the use temperature, a theoretical gridding plane of a theoretical model of the pressure vessel is established, and the thinnest allowable wall thickness of each position of the pressure vessel corresponds to the gridding plane to obtain an actual wall thickness plane coordinate system of the vessel. In this way, the thinnest of each location allows the wall thickness to be directly incorporated into the gridded plane, resulting in an accurate theoretical wall thickness plane coordinate system. Similarly, in step 2, in this embodiment, the actual gridding plane is obtained after the plane of the inner wall of the container is scanned and detected, and the wall thickness data at each position inside the container is combined with the actual gridding plane to obtain the actual wall thickness plane coordinate system. In step 5, the theoretical wall thickness plane coordinate system is remeasured when the region marked as the defect position is repeatedly detected. Thus, the detection error of the wall thickness of the container can be reduced by reckoning the theoretical wall thickness plane coordinate system when the defect position is repeatedly detected.
Example 2.
The embodiment provides a detection device for realizing the intelligent detection method for the wall thickness of the pressure container in the embodiment 1, which comprises a detection probe, a model input assembly and a control calculation module; the detection probe comprises a probe body, and a fixer for controlling the probe body to rotate is hinged to the end part of the probe body; the model input assembly comprises a data input module and a theoretical model scanner, and the data input module and the theoretical model scanner are connected with the control calculation module; the computer control module comprises a machine body, wherein a processor module is arranged in the machine body, and the processor module is connected with a data interface for connecting the detection probe, the data input module and the theoretical model scanner; the front side of the machine body is also provided with a display screen connected with the processor module.
Through the arrangement, the detection device in the embodiment can efficiently detect the pressure container by using the detection method, wherein the probe body can be fixed at the detection position of the corresponding container through the fixer, and the detection angle can be adjusted according to the detection requirement, so that a technician can conveniently obtain an actual wall thickness plane coordinate system D2; the theoretical wall thickness plane coordinate system D1 of the container can be quickly obtained by using the data input module and the theoretical model scanner, and data detected by the probe body, the data input module and the theoretical model scanner can be transmitted to the processor module through the data interface; after the D1 and D2 coordinate systems are obtained, calculation judgment can be carried out through the processor module, and therefore calculation data are displayed on a display screen; and the comparison and calculation of technicians are convenient.
In order to realize data transmission, the processor module in this embodiment is connected with a network communication module. The network communication module can be a local area network, a mobile network module and the like, which are not described herein again; for the convenience of moving the equipment, this embodiment is equipped with power module in the organism, and power module is connected with the jack that charges of locating the organism outside. Therefore, the power supply module can be used for supplying power to the equipment, and the rechargeable battery module can be used for charging through the charging jack and is suitable for the mobile equipment to carry out on-site detection on the pressure container. When detecting, the technical staff need utilize theoretical model scanner to scan the container, and this embodiment articulates on theoretical model scanner has the fixed jack catch that can fix at the container opening. Like this, the scanner can be fixed to the fixed jack catch to improve the degree of accuracy that the model measured.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (8)
1. An intelligent detection method for the wall thickness of a pressure container is characterized by comprising the following steps:
s1, calculating the allowable stress amplitude of a wall material of a pressure container to be detected at a use temperature to obtain the thinnest allowable wall thickness of each theoretical position of the pressure container, and establishing a theoretical wall thickness plane coordinate system D1 of the container;
s2, detecting the wall thickness of each position of the inner wall of the container by using a detection probe, and establishing an actual wall thickness plane coordinate system D2 of the container;
s3, comparing a theoretical wall thickness plane coordinate system with an actual wall thickness plane coordinate system to obtain whether the wall thickness of each position of the inner wall of the container is lower than a theoretical value or not, and marking each defect position P when the actual wall thickness of the inner wall of the container is lower than the lowest allowable theoretical wall thickness value;
s4, judging the defect level of each defect position according to the type, the wall thickness, the pressure bearing capacity, the material, the storage medium and the working environment of the detection container;
and S5, repeatedly detecting the coordinates marked as the defect positions, and confirming that the positions are false defects or real defects.
2. The intelligent detection method for the wall thickness of the pressure container as claimed in claim 1, wherein in S1, after the allowable stress amplitude of the wall material of the pressure container to be detected at the use temperature is calculated, a theoretical gridding plane of a theoretical model of the pressure container is established, and the minimum allowable wall thickness of each position of the pressure container corresponds to the gridding plane to obtain the actual wall thickness plane coordinate system D1 of the container.
3. The intelligent detection method for the wall thickness of the pressure container as claimed in claim 1, wherein in S2, the actual gridding plane is obtained after scanning and detecting the inner wall plane of the container, and the actual wall thickness plane coordinate system is obtained by combining the wall thickness data of each position inside the container with the actual gridding plane.
4. The intelligent wall thickness detection method for the pressure container as claimed in claim 1, wherein in S5, the theoretical wall thickness plane coordinate system is remeasured while the region marked as the defect position is repeatedly detected.
5. A detection device for realizing the intelligent detection method for the wall thickness of the pressure container according to any one of claims 1 to 4 is characterized by comprising a detection probe, a model input component and a control calculation module; the detection probe comprises a probe body, and a fixer for controlling the probe body to rotate is hinged to the end part of the probe body; the model input assembly comprises a data input module and a theoretical model scanner, and the data input module and the theoretical model scanner are connected with the control calculation module; the computer control module comprises a machine body, wherein a processor module is arranged in the machine body, and the processor module is connected with a data interface for connecting a detection probe, a data input module and a theoretical model scanner; and the front side of the machine body is also provided with a display screen connected with the processor module.
6. The intelligent detection device for the wall thickness of the pressure container as claimed in claim 5, wherein the processor module is connected with a network communication module.
7. The intelligent detection device for the wall thickness of the pressure container as claimed in claim 5, wherein a power supply module is arranged in the machine body, and the power supply module is connected with a charging jack arranged outside the machine body.
8. The intelligent detection device for the wall thickness of the pressure container as claimed in claim 5, wherein a fixing claw capable of being fixed on the opening of the container is hinged on the theoretical model scanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111103130.4A CN113884044A (en) | 2021-09-18 | 2021-09-18 | Intelligent detection method and detection device for wall thickness of pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111103130.4A CN113884044A (en) | 2021-09-18 | 2021-09-18 | Intelligent detection method and detection device for wall thickness of pressure container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113884044A true CN113884044A (en) | 2022-01-04 |
Family
ID=79010145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111103130.4A Pending CN113884044A (en) | 2021-09-18 | 2021-09-18 | Intelligent detection method and detection device for wall thickness of pressure container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113884044A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414366A (en) * | 2001-10-24 | 2003-04-30 | 中国石油化工股份有限公司巴陵分公司 | Method of detecting pressure container |
| CN105241955A (en) * | 2015-09-23 | 2016-01-13 | 南京佳业检测工程有限公司 | Ultrasonic testing process for thick-wall container |
| CN106370106A (en) * | 2016-09-30 | 2017-02-01 | 上海航天精密机械研究所 | Industrial robot and linear guide rail-combined linear laser scanning measurement system and method |
| CN107270833A (en) * | 2017-08-09 | 2017-10-20 | 武汉智诺维科技有限公司 | A kind of complex curved surface parts three-dimension measuring system and method |
| CN108180847A (en) * | 2017-12-11 | 2018-06-19 | 中材科技股份有限公司 | A kind of method for measuring thickness of complex-curved braiding precast body |
| CN108280268A (en) * | 2017-12-29 | 2018-07-13 | 中国人民解放军陆军工程大学 | Pressure vessel Parameters design for examining underwater demolition equipment performance |
| CN108645359A (en) * | 2018-05-31 | 2018-10-12 | 华中科技大学 | A kind of rotary body wall thickness detection method |
| CN108801914A (en) * | 2018-05-29 | 2018-11-13 | 华中科技大学 | A kind of detection method and detecting system to how groove-shaped panel material forming defects |
| CN109596709A (en) * | 2018-12-19 | 2019-04-09 | 张磊 | A kind of detection method of fixed pressure vessel |
| CN211977852U (en) * | 2020-04-03 | 2020-11-20 | 北京博研中能科技有限公司 | Multichannel ultrasonic multi-echo corrosion wall thickness online monitoring system |
| CN112964212A (en) * | 2021-03-29 | 2021-06-15 | 广船国际有限公司 | Coating thickness detector and coating thickness detection method |
| CN213515530U (en) * | 2020-09-15 | 2021-06-22 | 广东省特种设备检测研究院珠海检测院 | Fixing device for wall thickness online monitoring probe of carbon steel high-temperature pressure vessel |
-
2021
- 2021-09-18 CN CN202111103130.4A patent/CN113884044A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414366A (en) * | 2001-10-24 | 2003-04-30 | 中国石油化工股份有限公司巴陵分公司 | Method of detecting pressure container |
| CN105241955A (en) * | 2015-09-23 | 2016-01-13 | 南京佳业检测工程有限公司 | Ultrasonic testing process for thick-wall container |
| CN106370106A (en) * | 2016-09-30 | 2017-02-01 | 上海航天精密机械研究所 | Industrial robot and linear guide rail-combined linear laser scanning measurement system and method |
| CN107270833A (en) * | 2017-08-09 | 2017-10-20 | 武汉智诺维科技有限公司 | A kind of complex curved surface parts three-dimension measuring system and method |
| CN108180847A (en) * | 2017-12-11 | 2018-06-19 | 中材科技股份有限公司 | A kind of method for measuring thickness of complex-curved braiding precast body |
| CN108280268A (en) * | 2017-12-29 | 2018-07-13 | 中国人民解放军陆军工程大学 | Pressure vessel Parameters design for examining underwater demolition equipment performance |
| CN108801914A (en) * | 2018-05-29 | 2018-11-13 | 华中科技大学 | A kind of detection method and detecting system to how groove-shaped panel material forming defects |
| CN108645359A (en) * | 2018-05-31 | 2018-10-12 | 华中科技大学 | A kind of rotary body wall thickness detection method |
| CN109596709A (en) * | 2018-12-19 | 2019-04-09 | 张磊 | A kind of detection method of fixed pressure vessel |
| CN211977852U (en) * | 2020-04-03 | 2020-11-20 | 北京博研中能科技有限公司 | Multichannel ultrasonic multi-echo corrosion wall thickness online monitoring system |
| CN213515530U (en) * | 2020-09-15 | 2021-06-22 | 广东省特种设备检测研究院珠海检测院 | Fixing device for wall thickness online monitoring probe of carbon steel high-temperature pressure vessel |
| CN112964212A (en) * | 2021-03-29 | 2021-06-15 | 广船国际有限公司 | Coating thickness detector and coating thickness detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104165735B (en) | A kind of gas cylinder air-tight test complexes | |
| CN112050912B (en) | Method, device and system for water meter online calibration based on ultrasonic flowmeter | |
| CN102637463B (en) | The method of main loop system in nuclear island of nuclear power plant is installed | |
| CN109596709B (en) | Detection method of fixed pressure container | |
| CN114778687A (en) | Method for quickly identifying and evaluating welding defects of pressure pipeline | |
| CN111461364A (en) | Intelligent auxiliary system and method for periodical inspection of pressure container | |
| CN112484655A (en) | Large tank type equipment structure deformation online detection and applicability evaluation system and method | |
| CN113686524B (en) | Testing device for flexible joint of steel catenary riser and using method of testing device | |
| CN113884044A (en) | Intelligent detection method and detection device for wall thickness of pressure container | |
| CN103776853B (en) | A kind of reference block detecting the lack of penetration degree of depth of small diameter tube weld bond | |
| CN206161053U (en) | Online test detection of storage tank and evaluation device | |
| CN107402254A (en) | A kind of transient electromagnetic defect of pipeline checking method and device | |
| CN1584562A (en) | Gas pipeline leakage detecting and positioning method and system based on microwave technology | |
| CN111413050A (en) | Tightness detection method and tightness detection tool for ship | |
| CN106054768A (en) | On-line leakage intelligent monitoring system based on multi-parameter monitoring and monitoring method | |
| CN201014210Y (en) | Device used for seabed oil gas pipeline detection and location | |
| CN215932146U (en) | Comprehensive detector for measuring geometric dimension of pressure-bearing equipment | |
| CN115308384A (en) | Quality analysis method for circumferential weld of oil and gas pipeline | |
| CN208568214U (en) | A kind of vacuum type leak detection apparatus and system | |
| CN206772527U (en) | A kind of pressure vessel detecting system | |
| CN105953018A (en) | Rubber-lining equipment corrosion online monitoring and control system | |
| CN115307051B (en) | Inflammable and explosive gas storage system and safety inspection method thereof | |
| CN210720253U (en) | Probe detection device | |
| CN220490642U (en) | Pipeline corrosion amount simulation test device | |
| CN219224683U (en) | Bent pipe weld phased array imaging detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |