阅读说明：本技术 一种海上平台立管检测装置 (Offshore platform riser detection device ) 是由 高凌霄 闫化云 蒋晓斌 李文晓 夏明磊 王东 于 2020-07-23 设计创作，主要内容包括：本发明公开了一种海上平台立管检测装置,包括超声导波检测设备、低能量射线检测设备和立管检测固定设备；超声导波检测设备包括相互连接的阵列传感器和信号调理模块,阵列传感器沿待检立管外圆周设置,信号调理模块连接计算机系统的数据采集及分析模块；立管检测固定设备包括钢制固定骨架,钢制固定骨架上布置磁性吸附部件、射线源固定部件、探测器固定部件；低能量射线检测设备包括射线源和探测器,探测器连接计算机系统的数据采集及分析模块。本发明可以实现海上平台立管精准、快速检测,发现立管缺陷位置及缺陷形态,适用于海上平台立管腐蚀检测与腐蚀状况评价。(The invention discloses a device for detecting a riser of an offshore platform, which comprises ultrasonic guided wave detection equipment, low-energy ray detection equipment and riser detection fixing equipment, wherein the ultrasonic guided wave detection equipment is connected with the lower end of the riser; the ultrasonic guided wave detection equipment comprises an array sensor and a signal conditioning module which are connected with each other, wherein the array sensor is arranged along the outer circumference of the vertical pipe to be detected, and the signal conditioning module is connected with a data acquisition and analysis module of a computer system; the vertical pipe detection fixing equipment comprises a steel fixing framework, wherein a magnetic adsorption part, a ray source fixing part and a detector fixing part are arranged on the steel fixing framework; the low-energy ray detection equipment comprises a ray source and a detector, wherein the detector is connected with a data acquisition and analysis module of a computer system. The method can realize accurate and rapid detection of the offshore platform riser, find the position and form of the riser defect, and is suitable for corrosion detection and corrosion condition evaluation of the offshore platform riser.)

1. The device for detecting the riser of the offshore platform is characterized by comprising ultrasonic guided wave detection equipment, low-energy ray detection equipment and riser detection fixing equipment;

the ultrasonic guided wave detection equipment comprises an array sensor (4) and a signal conditioning module (2) which are connected with each other through signal lines, wherein the array sensor (4) is arranged along the outer circumference of a vertical pipe (3) to be detected, and the signal conditioning module (2) is connected with a data acquisition and analysis module (1) of a computer system through a data transmission line;

the vertical pipe detection fixing equipment comprises a steel fixing framework (5), wherein a magnetic adsorption part (6), a ray source fixing part (7) and a detector fixing part (8) are arranged on the steel fixing framework (5), the steel fixing framework (5) is fixed on the outer side of a vertical pipe (3) to be detected through the magnetic adsorption part (6), and the ray source fixing part (7) and the detector fixing part (8) are arranged on two opposite sides of the steel fixing framework (5);

the low-energy ray detection equipment comprises a ray source and a detector, wherein the ray source is fixed on a ray source fixing part (7), the detector is fixed on a detector fixing part (8), and the detector is connected with a data acquisition and analysis module (1) of a computer system through a signal line.

2. The offshore platform riser detection device of claim 1, wherein the steel fixed framework (5) is formed by connecting two semicircular framework parts through a slip joint, and the cross section of the steel fixed framework (5) has the same shape as that of the riser to be detected; when the device is installed, one part is put in place firstly, the magnetic adsorption part (6) of the part is electrified to generate magnetic force, the part is adsorbed on the pipe wall of the stand pipe (3) to be detected through the magnetic force, then the other part is put in place, the magnetic adsorption part (6) is electrified to generate magnetic force and is fixed on the pipe wall of the stand pipe (3) to be detected, and finally, the movable joint (9) is connected to combine the two parts together to form stable fixing conditions.

3. The offshore platform riser detection device according to claim 1, wherein an ultrasonic guided wave detection device is installed on the upper portion of the riser (3) to be detected, guided wave detection is started after the ultrasonic guided wave detection device is in place, a related instruction is transmitted to the signal conditioning module (2) through the data acquisition and analysis module (1) of the computer system, the signal conditioning module (2) transmits a modulated detection signal to the array sensor (4), the array sensor (4) transmits the signal along the pipe wall of the riser (3) to be detected, the signal is fed back to the array sensor (4) after a defect occurs, the echo signal is transmitted back to the signal conditioning module by the array sensor (4) to be demodulated and then fed back to the data acquisition and analysis module (1), and an analysis result is output in the computer system, so that the range of the defect region of the riser to be detected can be determined.

4. The offshore platform riser detection device of claim 1, wherein after the low energy radiation detection device is installed, radiation detection is started, the radiation source vertically emits X-rays to the region of the riser defect to be detected, the X-rays penetrate through the riser to be detected and project to the detector, the X-rays are converted into electrical signals and transmitted to the data collection and analysis module of the computer system, and the shape and size of the riser defect to be detected are obtained after analysis.

Technical Field

The invention relates to the field of offshore platform riser detection, in particular to an offshore platform riser detection device.

Background

The riser of the offshore platform has particularity, an external corrosion area of the riser passes through a splashing area, a tidal range area, a full immersion area and a sea mud area from an atmospheric area, the corrosion condition is complex and variable, and particularly the splashing area is a serious disaster area caused by corrosion outside the marine environment.

For a long time, the in-service detection and evaluation work and emergency maintenance of the marine platform in China on the stand pipe are in scattered states, and an integral effective hidden danger detection and defect evaluation means is not formed yet. China oceanic oil group company develops various detection technologies such as low-frequency guided wave, MsS, ultrasonic thickness measurement and water permeability detection and the like aiming at riser corrosion, the effect is not ideal, and especially, detection blind spots exist in inner pipes of double-layer risers, riser clamps and other parts, and the detection blind spots become hidden troubles for safe operation of submarine pipelines.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a riser detection device of an offshore platform, which is reasonable, scientific and effective in design and makes up the defects of the technical means for detecting the riser of the offshore oil in the current market. By applying the detection method, the accuracy and the reliability of riser detection can be realized, especially the detection of the positions with detection blind spots in inner pipes, riser clamps and the like of double-layer risers can be realized, and the hidden danger of safe operation of submarine pipelines is solved.

The purpose of the invention is realized by the following technical scheme.

The invention relates to a device for detecting a riser of an offshore platform, which comprises ultrasonic guided wave detection equipment, low-energy ray detection equipment and riser detection fixing equipment;

the ultrasonic guided wave detection equipment comprises an array sensor and a signal conditioning module which are mutually connected through a signal line, wherein the array sensor is arranged along the outer circumference of the vertical pipe to be detected, and the signal conditioning module is connected with a data acquisition and analysis module of a computer system through a data transmission line;

the vertical pipe detection fixing equipment comprises a steel fixing framework, wherein a magnetic adsorption part, a ray source fixing part and a detector fixing part are arranged on the steel fixing framework, the steel fixing framework is fixed on the outer side of a vertical pipe to be detected through the magnetic adsorption part, and the ray source fixing part and the detector fixing part are arranged on two opposite sides of the steel fixing framework;

the low-energy ray detection equipment comprises a ray source and a detector, wherein the ray source is fixed on a ray source fixing part, the detector is fixed on a detector fixing part, and the detector is connected with a data acquisition and analysis module of a computer system through a signal wire.

The steel fixed framework is formed by connecting two semicircular framework parts through a slip joint, and the shape of the section of the steel fixed framework is the same as that of the vertical pipe to be detected; when the device is installed, one part is put in place firstly, the magnetic adsorption part of the part is electrified to generate magnetic force, the part is adsorbed on the pipe wall of the stand pipe to be detected through the magnetic force, then the other part is put in place, the magnetic adsorption part is electrified to generate magnetic force and is fixed on the pipe wall of the stand pipe to be detected, and finally, the two parts are connected and combined together through a movable joint to form stable fixing conditions.

The method comprises the steps that ultrasonic guided wave detection equipment is installed on the upper portion of a stand pipe to be detected, guided wave detection is started after the ultrasonic guided wave detection equipment is in place, relevant instructions are transmitted to a signal conditioning module through a data acquisition and analysis module of a computer system, the signal conditioning module transmits modulated detection signals to an array sensor, the array sensor transmits the signals along the pipe wall of the stand pipe to be detected, the signals are fed back to the array sensor after defects occur, the array sensor transmits echo signals back to the signal conditioning module to be demodulated and then feeds back the signals to the data acquisition and analysis module, analysis results are output in the computer system, and the range of the defect area of the stand pipe to be detected can be.

After the low-energy ray detection equipment is installed, ray detection is started, the ray source vertically emits X rays to a defect area of the stand pipe to be detected, the X rays penetrate through the stand pipe to be detected and project to the detector, the X rays are converted into electric signals, the electric signals are transmitted to the data collection and analysis module of the computer system, and the appearance and the size of the defect of the stand pipe to be detected are obtained after analysis.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

(1) the technical value is as follows: the detection technical level of the marine petroleum pipeline of an enterprise is improved, a feasible method is provided for detecting the marine petroleum pipeline vertical pipe, and the defect of the detection capability of the vertical pipe is made up.

(2) The economic value is as follows: as more than 20 cases of failures of the Bohai sea offshore platform riser occur, the riser detection technology is a difficult problem to solve urgently. The implementation of the technology can provide credible data support for corrosion evaluation of the riser, becomes the market promotion basis of riser corrosion monitoring and evaluation business, and creates a professional team for corrosion monitoring and detection of the riser. In addition, the technology can fill the blank of a monitoring and detecting technical means of the submarine pipeline riser and complete the short plates for submarine pipeline integrity management.

(3) The application value is as follows: the riser detection device can realize the detection of the riser of the offshore platform, fills the technical blank of the on-line detection of the corrosion of the marine riser in China, realizes the reliability and the accuracy of riser detection data, and provides reference data such as corrosion position, size, appearance shape and the like for riser corrosion evaluation. The detection device meets the requirements of personnel safety and convenient operation.

(4) The existing riser detection method uses a single detection technology, such as low-frequency guided wave, MsS, ultrasonic thickness measurement and water permeation detection, and the technologies have the problem of unreliable data. The detection device provided by the invention adopts two technical means of combining ultrasonic guided waves and low-energy rays, realizes the positioning of the defects of the vertical pipe through the ultrasonic guided waves, and then verifies and accurately detects the positions of the defects by using the low-energy rays.

(5) The existing riser detection method has detection blind spots on the inner pipe of the double-layer riser, the interior of a riser clamp and other parts, and the detection of the detection blind spots can be realized through the device.

(6) The detection result of the invention is more reliable and accurate, the identification of the wall thickness reduction of the measurement index is not less than 10 percent, the identification thickness of the corrosion product is not less than 5mm, and the identification density difference of the layered substance is not more than 500kg/m³。

(7) The detection process of the invention is more efficient, and the corrosion can be quickly locked by the ultrasonic guided wave detection system, thereby realizing accurate detection. The vertical pipe clamp can penetrate through a vertical pipe flange to realize the detection of the position of the vertical pipe clamp, and can penetrate through the vertical pipe flange to detect up to 5 meters.

Drawings

FIG. 1 is a schematic diagram of the ultrasonic guided wave detection device of the present invention.

FIG. 2 is a schematic view of a riser inspection fixture according to the present invention.

FIG. 3 is a flow chart of the operation of the offshore platform riser inspection device of the present invention.

Reference numerals: the system comprises a data acquisition and analysis module, a signal conditioning module, a vertical pipe to be detected, a 4-array sensor, a 5-steel fixed framework, a 6-magnetic adsorption part, a 7-ray source fixed part, a 8-detector fixed part and a 9-slipknot.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The device for detecting the riser of the offshore platform comprises ultrasonic guided wave detection equipment, low-energy ray detection equipment and riser detection fixing equipment, integrates two detection technologies of ultrasonic guided wave and low-energy ray, can realize accurate and rapid detection of the riser of the offshore platform, finds the defect position and defect form of the riser, and is used for corrosion detection and corrosion condition evaluation of the riser of the offshore platform. The ultrasonic guided wave detection equipment is used for quickly positioning a riser defect area, the low-energy ray detection equipment is used for accurately detecting the riser defect area, the riser detection fixing equipment is used for fixing the low-energy ray detection equipment on the riser of the offshore platform, can move along the radial direction and the axial direction as required, can fix the low-energy ray detection equipment at an appointed position for detection, and detects the appointed area.

As shown in figure 1, the ultrasonic guided wave detection equipment comprises an array sensor 4 and a signal conditioning module 2 which are connected with each other through signal lines, wherein the array sensor 4 is arranged along the outer circumference of a stand pipe 3 to be detected, and the signal conditioning module 2 is connected with a data acquisition and analysis module 1 of a computer system for data transmission and analysis through a data transmission line. The array sensor 4 is composed of a plurality of piezoelectric ceramic sensors, the sensors are uniformly arranged on the circumference with a certain diameter, and the array sensor 4 transmits ultrasonic guided wave detection signals by using a piezoelectric ceramic probe and receives echo signals.

As shown in fig. 2, the riser detection fixing device comprises a steel fixing framework 5, a magnetic adsorption component 6, a ray source fixing component 7 and a detector fixing component 8 are arranged on the steel fixing framework 5, the steel fixing framework 5 is fixed on the outer side of the riser 3 to be detected through the magnetic adsorption component 6, and the ray source fixing component 7 and the detector fixing component 8 are arranged on two opposite sides of the steel fixing framework 5. The steel fixing framework 5 is formed by connecting two semicircular framework parts through a slip joint 9, and the cross section of the steel fixing framework 5 is the same as that of the stand pipe 3 to be detected. When the device is installed, one part is put in place firstly, the magnetic adsorption part of the part is electrified to generate magnetic force, the part is adsorbed on the pipe wall of the stand pipe 3 to be detected through the magnetic force, then the other part is put in place, the magnetic adsorption part 6 is electrified to generate magnetic force and is fixed on the pipe wall of the stand pipe 3 to be detected, and finally, the movable joint 9 is connected to combine the two parts together to form stable fixing conditions. In addition, riser detection fixed equipment can also adopt the anti-falling cable to use as the accessory, plays the fixed action.

The low-energy ray detection equipment comprises a ray source and a detector, wherein the ray source is fixed on a ray source fixing part 7, the detector is fixed on a detector fixing part 8, and the detector is connected with a data acquisition and analysis module 1 of a computer system through a signal wire.

As shown in fig. 3, an ultrasonic guided wave detection device is installed on the upper part of the riser 3 to be detected (generally on the bottom deck of the platform), and after the ultrasonic guided wave detection device is in place, guided wave detection is started, the data acquisition and analysis module 1 of the computer system transmits the related instruction to the signal conditioning module 2, the signal conditioning module 2 transmits the modulated detection signal to the array sensor 4, the array sensor 4 transmits the signal along the pipe wall of the stand pipe 3 to be detected, the signal is fed back to the array sensor 4 after the defect occurs, the array sensor 4 transmits the echo signal back to the signal conditioning module 2 for demodulation, and the data is fed back to the data acquisition and analysis module, and the analysis result is output in a computer system, so that the part with the wall thickness reduced by more than 10% can be rapidly judged, the range of a defect area of the vertical pipe is judged, rapid positioning is realized, and an installation position is provided for low-energy ray detection equipment.

After the low-energy ray detection equipment is installed, ray detection is started, the energy is controlled within the safety range of a human body, the ray source vertically emits X rays to the defect area of the stand pipe to be detected, the X rays penetrate through the stand pipe to be detected and are projected onto a signal receiving board of a detector to be converted into electric signals, the electric signals are transmitted to a data collecting and analyzing module of a computer system, the appearance and the size of the defect of the stand pipe to be detected can be obtained after analysis, if corrosion exists, the thickness can be identified to be not less than 5mm, and the density difference of layered material identification is not more than 500kg³Corrosion products of (a).

While the present invention has been described in terms of its functions and operations with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise functions and operations described above, and that the above-described embodiments are illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined by the appended claims.