CN111664820A - Submarine manifold wall thickness monitoring device and monitoring method - Google Patents
Submarine manifold wall thickness monitoring device and monitoring method Download PDFInfo
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- CN111664820A CN111664820A CN202010518989.0A CN202010518989A CN111664820A CN 111664820 A CN111664820 A CN 111664820A CN 202010518989 A CN202010518989 A CN 202010518989A CN 111664820 A CN111664820 A CN 111664820A
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
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Abstract
The invention discloses a submarine manifold wall thickness monitoring device and a submarine manifold wall thickness monitoring method, wherein the monitoring device comprises at least one ultrasonic transmitter positioned outside a manifold, and the ultrasonic transmitter transmits first ultrasonic waves and at least one second ultrasonic wave to the manifold; the first ultrasonic wave is reflected by the outer surface of the manifold wall, and the second ultrasonic wave is reflected by the inner surface of the manifold wall closest to the corresponding ultrasonic transmitter; the time monitor adjusts the output receiving time signal according to the received first ultrasonic wave and at least one second ultrasonic wave reflected by the manifold; the data processor acquires the wall thickness of the manifold corresponding to the setting position of the ultrasonic transmitter according to the received receiving time signal so as to adjust the generated switch control signal; the switching valve opens or closes an oil delivery passage of the manifold according to the received switching control signal. By the technical scheme, the wall thickness of the manifold is monitored in real time, and the oil transportation passage of the manifold is closed when the monitored wall thickness of the manifold is abnormal.
Description
Technical Field
The embodiment of the invention relates to the technical field of submarine manifolds, in particular to a submarine manifold wall thickness monitoring device and method.
Background
In recent decades, global marine oil and gas development is rapid, and a seabed oil and gas manifold is the most rapid, safe, reliable and economic way for continuously and massively conveying oil and gas resources, is responsible for the important task of marine oil and gas gathering and transportation, and is also taken as the life line of marine oil and gas engineering. The submarine manifold as an important offshore oil and gas field production facility has the characteristics of high investment and high risk, the submarine manifold is expensive in manufacturing cost, the marine environment in which the submarine manifold is located is extremely complex, and a plurality of uncertain factors exist, along with the increase of the laying distance of the submarine manifold and the extension of the running time, the damage probability of the submarine manifold is increased, and accidents are more frequent.
The oil gas delivered by the submarine manifold is harmful to human bodies, once the submarine manifold is leaked or damaged, the oil gas can seriously affect the surrounding environment and personnel, the submarine manifold is leaked to waste resources, the crude oil is leaked to explode to cause casualties and property damage, and the surrounding ecological environment is seriously damaged. Meanwhile, the massive leakage of the submarine manifold can also cause the production stop of the oil and gas field, so that huge economic loss is directly caused, and the safety of the submarine manifold becomes an important factor influencing the ocean oil and gas development and safety production process.
Disclosure of Invention
In view of this, the embodiment of the invention provides a device and a method for monitoring the wall thickness of a subsea manifold, which realize real-time monitoring of the wall thickness of the subsea manifold in an offshore oil and gas field, and shut off an oil transportation path of the manifold when the monitored wall thickness of the manifold is abnormal, thereby reducing the probability of continuous leakage of the subsea manifold and improving the safety of the subsea manifold in operation.
In a first aspect, an embodiment of the present invention provides a subsea manifold wall thickness monitoring apparatus, including:
at least one ultrasonic transmitter located outside the manifold, the ultrasonic transmitter configured to emit a first ultrasonic wave and at least one second ultrasonic wave toward the manifold; wherein the first ultrasonic wave is reflected via an outer surface of a manifold wall, and the second ultrasonic wave is reflected via an inner surface of the manifold wall that is closest to the corresponding ultrasonic transmitter;
a time monitor for adjusting an output receive time signal based on the received first and at least one second ultrasonic waves reflected via the manifold;
the data processor is used for acquiring the wall thickness of the manifold corresponding to the setting position of the ultrasonic transmitter according to the received receiving time signal so as to adjust the generated switch control signal;
and the switching valve is used for opening or closing the oil transportation passage of the manifold according to the received switching control signal.
Further, at least one of the second ultrasonic waves is reflected directly out of the manifold via an inner surface of the manifold wall closest to the corresponding ultrasonic transmitter.
Further, at least one of the second ultrasonic waves is reflected via the inner surface of the manifold wall closest to the corresponding ultrasonic transmitter and is reflected out of the manifold after passing through at least one round trip within the manifold wall closest to the corresponding ultrasonic transmitter.
Further, the switching valve includes:
the safety control valve is arranged on an oil transportation passage of the manifold, and the electromagnetic valve is used for driving the safety control valve to open or close the oil transportation passage of the manifold according to the received switch control signal.
Further, the data processor is also used for adjusting the generated first electric control signal according to the received receiving time signal;
the submarine manifold wall thickness monitoring device further comprises:
and the first electric control moving structure is used for driving the electromagnetic valve and the safety control valve to move along the axial direction of the manifold according to the received first electric control signal.
Further, the data processor includes:
the data analyzer is used for obtaining the wall thickness of the manifold corresponding to the setting position of the ultrasonic transmitter according to the received receiving time signal and generating a thickness signal;
and the data transmitter is used for converting the received thickness signal into a thickness storage signal in a storage data form and transmitting the thickness storage signal to the mobile terminal.
Further, the data processor is also used for acquiring the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received receiving time signal so as to adjust the generated indication control signal;
the submarine manifold wall thickness monitoring device further comprises:
and the indicating device is used for adjusting the indicating state of the indicating device according to the received indicating control signal, and comprises a display indicating device and/or a sound indicating device.
In a second aspect, an embodiment of the present invention further provides a method for monitoring a wall thickness of a subsea manifold, including:
an ultrasonic transmitter sends a first ultrasonic wave and at least one second ultrasonic wave to the manifold; wherein the ultrasonic emitters are located outside the manifold, the first ultrasonic wave is reflected via an outer surface of a manifold wall, and the second ultrasonic wave is reflected via an inner surface of the manifold wall that is closest to the corresponding ultrasonic emitter;
the time monitor adjusts a received time signal of an output according to the received first ultrasonic wave and the at least one second ultrasonic wave reflected by the manifold;
the data processor acquires the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received receiving time signal so as to adjust the generated switch control signal;
and the switching valve opens or closes the oil transportation passage of the manifold according to the received switching control signal.
Further, at least one of the second ultrasonic waves is directly reflected out of the manifold via the inner surface of the manifold wall closest to the corresponding ultrasonic transmitter, and the data processor acquires the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received receiving time signal comprises:
the first receiving time contained in the receiving time signal corresponding to the first ultrasonic wave received by the data processor is a, the second receiving time contained in the receiving time signal corresponding to the second ultrasonic wave received by the data processor is b, and the wall thickness D of the manifold corresponding to the setting position of the ultrasonic generator satisfies the following calculation formula:
where v is the propagation velocity of the ultrasonic wave.
Further, at least one second ultrasonic wave is reflected by the inner surface of the manifold wall closest to the corresponding ultrasonic transmitter, and is reflected out of the manifold after n round trips in the manifold wall closest to the corresponding ultrasonic transmitter; wherein n is a positive integer;
the data processor obtains the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received receiving time signal, and the wall thickness comprises the following steps:
a first receiving time included in a receiving time signal corresponding to the first ultrasonic wave received by the data processor is a, a second receiving time included in a receiving time signal corresponding to the second ultrasonic wave received by the data processor is c, and a wall thickness D of the manifold corresponding to the setting position of the ultrasonic generator satisfies the following calculation formula:
where v is the propagation velocity of the ultrasonic wave.
The embodiment of the invention provides a submarine manifold wall thickness monitoring device and a monitoring method, wherein the monitoring device comprises at least one ultrasonic transmitter positioned outside a manifold, a time monitor, a data processor and an indicating device, the ultrasonic transmitter is used for transmitting a first ultrasonic wave and at least one second ultrasonic wave to the manifold, the first ultrasonic wave is reflected by the outer surface of the manifold wall, the second ultrasonic wave is reflected by the inner surface of the manifold wall closest to the corresponding ultrasonic transmitter, the time monitor is used for adjusting output receiving time signals according to the received first ultrasonic wave reflected by the manifold and at least one second ultrasonic wave, the data processor is used for acquiring the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received receiving time signals so as to adjust the generated switch control signal, and the switch valve is used for opening or closing an oil transportation passage of the manifold according to the received switch control signal. Therefore, the wall thickness of the underwater manifold of the marine oil and gas field is monitored in real time by using at least one ultrasonic transmitter, a time monitor, a data processor and a switch valve which are positioned outside the manifold, an oil transportation passage of the manifold is cut off when the monitored wall thickness of the manifold is abnormal, the probability of continuous leakage of the submarine manifold is reduced, and the working safety of the submarine manifold is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings needed to be used in the description of the embodiments or the background art will be briefly introduced below, and it is obvious that the drawings in the following description are schematic diagrams of some embodiments of the present invention, and for those skilled in the art, other solutions can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a subsea manifold wall thickness monitoring apparatus according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a subsea manifold along an axial direction according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a subsea manifold along an axial direction according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a subsea manifold along its axial direction according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another wall thickness monitoring device for a subsea manifold according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a subsea manifold along its axial direction according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of a method for monitoring the wall thickness of a subsea manifold according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. Throughout this specification, the same or similar reference numbers refer to the same or similar structures, elements, or processes. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Fig. 1 is a schematic structural diagram of a subsea manifold wall thickness monitoring device according to an embodiment of the present invention. As shown in fig. 1, the subsea manifold wall thickness monitoring device comprises at least one ultrasonic transmitter 2 located outside the manifold 1, fig. 1 exemplarily shows one ultrasonic transmitter 2 comprised by the subsea manifold wall thickness monitoring device, the subsea manifold wall thickness monitoring device further comprises a time monitor 3, a data processor 4 and a switch valve 10, the ultrasonic transmitter 2 is configured to emit a first ultrasonic wave a1 and at least one second ultrasonic wave a2 to the manifold 1, the first ultrasonic wave a1 is reflected via an outer surface of a manifold wall, the second ultrasonic wave a2 is reflected via an inner surface of the manifold wall closest to the corresponding ultrasonic transmitter 2, fig. 1 schematically shows the manifold 1 without showing a transmission path of the first ultrasonic wave a1 and the at least one second ultrasonic wave a 2.
The time monitor 3 is used for adjusting output receiving time signals according to received first ultrasonic waves a1 and at least one second ultrasonic wave a2 reflected by the manifold 1, the data processor 4 is used for acquiring the wall thickness of the manifold 1 corresponding to the arrangement position of the ultrasonic transmitter 2 according to the received receiving time signals so as to adjust generated switch control signals, the switch valve 10 is used for opening or closing an oil transportation passage 110 of the manifold 1 according to the received switch control signals, the manifold 1 can be a cylindrical manifold for example, and a hollow area formed by wrapping the side wall of the cylindrical manifold is used for transporting oil and gas, and the hollow area is the oil transportation passage of the manifold 1.
Specifically, the ultrasonic transmitter 2 is used to transmit electromagnetic waves with high frequency, and the ultrasonic waves are transmitted to the subsea manifold 1 by the ultrasonic transmitter 2, so that the wall thickness of the subsea manifold 1 can be measured by the ultrasonic waves due to the characteristics of strong penetration and no influence on the propagation direction in the water. In order to obtain the wall thickness of the subsea manifold 1 at the location where the ultrasonic emitter 2 is arranged, the ultrasonic emitter 2 is arranged to emit a first ultrasonic wave a1 and at least one second ultrasonic wave a2, and the reflection positions of the first ultrasonic wave a1 and the second ultrasonic wave a2 are set to be different relative to the wall of the subsea manifold 1, wherein the first ultrasonic wave a1 is reflected by the outer surface of the manifold wall, the second ultrasonic wave a2 is reflected by the inner surface of the manifold wall closest to the corresponding ultrasonic transmitter 2, namely, the first ultrasonic wave a1 and the second ultrasonic wave a2 are respectively reflected by the outer surface and the inner surface of the same position side wall of the manifold 1, the time monitor 3 receives the first ultrasonic wave a1 and at least one second ultrasonic wave a2 which are transmitted by the ultrasonic transmitter 2 and reflected by the manifold 1, and a reception time signal containing the aforementioned time information generated according to the time adjustment of the reception of the first ultrasonic wave a1 and the second ultrasonic wave a2 is sent to the data processor 4.
The data processor 4 receives the receiving time signal sent by the time monitor 3, obtains the length of the path which is passed by the first ultrasonic wave a1 sent by the ultrasonic emitter 2 and reflected to the time monitor 3 and the length of the path which is passed by the second ultrasonic wave a2 sent by the ultrasonic emitter 2 and reflected to the time monitor 3 according to the receiving time signal containing the time information and the propagation speed of the ultrasonic wave, and calculates and obtains the wall thickness of the manifold 1 corresponding to the position where the ultrasonic emitter 2 is arranged according to the obtained two lengths. For example, the data processor 4 may store a standard comparison value of the manifold wall thickness, and if the value is lower than the standard comparison value, it is determined that the manifold wall thickness is too small, and it may be determined that the wall thickness of the manifold at the position of the manifold 1 is too thin due to erosion of a large amount of salts, microorganisms and other substances existing in the marine environment, and thus the safety of the submarine manifold transportation cannot be ensured. When the data processor 4 judges that the wall thickness of the pipe manifold 1 corresponding to the position where the ultrasonic transmitter 2 is arranged is smaller than the standard comparison value of the wall thickness of the pipe manifold 1 according to the received receiving time signal, the generated switch control signal can be adjusted to control the switch valve 10 to close the oil transportation passage 110 of the pipe manifold 1.
Therefore, the wall thickness monitoring device of the submarine manifold realizes real-time monitoring on the wall thickness of the submarine manifold 1 of the marine oil and gas field by utilizing at least one ultrasonic transmitter 2, a time monitor 3, a data processor 4 and a switch valve 10 which are positioned outside the manifold, and the oil transportation path of the manifold is cut off when the monitored wall thickness of the manifold is abnormal, the submarine manifold is an important guarantee measure for offshore oil and gas production and is also an important content for asset integrity management of a marine pipeline operator.
Illustratively, the ultrasonic transmitter 2 may be a separate device disposed on the sea floor, and the time monitor 3 and the data processor 4 may be integrated in the same device provided with a waterproof housing and disposed on the sea floor.
Fig. 2 is a schematic cross-sectional view of a subsea manifold according to an embodiment of the present invention, and fig. 3 is a schematic cross-sectional view of the subsea manifold according to an embodiment of the present invention. In connection with fig. 2 and 3, it may be provided that at least one second ultrasonic wave a2 is reflected directly out of the manifold 1 via the inner surface of the manifold wall 11 which is closest to the corresponding ultrasonic emitter 2.
Specifically, the outer surface of the side wall 11 of the manifold 1 corresponding to the ultrasonic transmitter 2 may be set as an a surface, the inner surface of the side wall 11 of the manifold 1 corresponding to the ultrasonic transmitter 2 may be set as a B surface, as shown in fig. 2, the first ultrasonic wave a1 is reflected to the time monitor 3 via the a surface of the manifold 1, and as shown in fig. 3, at least one second ultrasonic wave a2 penetrates the a surface of the manifold 1 into the interior of the side wall of the manifold 1 and is reflected to the time monitor 3 via the B surface.
For example, a first receiving time included in the receiving time signal corresponding to the first ultrasonic wave a1 received by the data processor 4 may be set as a, that is, a time from the first ultrasonic wave a1 being emitted by the ultrasonic transmitter 2 to the time monitor 3 receiving the first ultrasonic wave a1, and a second receiving time included in the receiving time signal corresponding to the second ultrasonic wave a2 received by the data processor 4 may be set as b, that is, a time from the second ultrasonic wave a2 being emitted by the ultrasonic transmitter 2 to the time monitor 3 receiving the second ultrasonic wave a2, and the wall thickness D of the manifold 1 corresponding to the setting position of the ultrasonic generator satisfies the following calculation formula:
wherein v is the propagation velocity of the ultrasonic wave, the path of the first ultrasonic wave a1 and the path of the second ultrasonic wave a2 shown in fig. 2 and fig. 3 can be obtained, and the difference between the path length of the second ultrasonic wave a2 corresponding to the second receiving time b and the path length of the first ultrasonic wave a1 corresponding to a between the first receiving times a is exactly equal to twice the wall thickness D of the manifold at the corresponding position, therefore, at least one second ultrasonic wave a2 is set to directly reflect out of the manifold 1 via the inner surface of the manifold wall 11 closest to the corresponding ultrasonic transmitter 2, so that the wall thickness of the subsea manifold in the offshore oil and gas field can be monitored in real time, the oil transportation passage of the manifold is shut off when the monitored wall thickness of the manifold is abnormal, the probability of the subsea manifold continuing leakage is reduced, and the safety of the subsea manifold is improved.
It should be noted that v may be default to the propagation velocity of the ultrasonic wave in the seawater, and the difference between the propagation velocity of the ultrasonic wave in the seawater and the propagation velocity of the ultrasonic wave in the manifold wall is an allowable error in the calculation process of the pipe wall thickness.
Fig. 4 is a schematic cross-sectional view of a subsea manifold along an axial direction according to an embodiment of the present invention. In connection with fig. 2 and 4, it may be provided that at least one second ultrasonic wave a2 is reflected via the inner surface of the manifold wall 11 closest to the corresponding ultrasonic emitter 2 and is reflected out of the manifold 1 after passing at least one round trip inside the manifold wall 11 closest to the corresponding ultrasonic emitter 2.
Specifically, it is also possible to set the outer surface of the side wall of the manifold 1 corresponding to the ultrasonic transmitter 2 as an a surface, set the inner surface of the side wall of the manifold 1 corresponding to the ultrasonic transmitter 2 as a B surface, as shown in fig. 2, the first ultrasonic wave a1 is reflected to the time monitor 3 via the a surface of the manifold 1, as shown in fig. 4, at least one second ultrasonic wave a2 enters the inside of the wall of the side manifold 1 through the a surface of the manifold 1 and is reflected via the B surface, at least one round trip is performed inside the wall of the manifold 1 and is reflected out of the manifold 1 again via the B surface of the manifold 1, and fig. 4 exemplarily sets the at least one second ultrasonic wave a2 enters the inside of the wall of the side manifold 1 through the a surface of the manifold 1 and is reflected via the B surface, and at least one round trip is performed inside the wall of the manifold 1 and is reflected out of the manifold 1 again via the B surface of the manifold 1.
For example, a first receiving time included in the receiving time signal corresponding to the first ultrasonic wave a1 received by the data processor 4 may be set as a, that is, a time from the first ultrasonic wave a1 being emitted by the ultrasonic transmitter 2 to the time monitor 3 receiving the first ultrasonic wave a1, and a second receiving time included in the receiving time signal corresponding to the second ultrasonic wave a2 received by the data processor 4 may be set as c, that is, a time from the second ultrasonic wave a2 being emitted by the ultrasonic transmitter 2 to the time monitor 3 receiving the second ultrasonic wave a2, and the wall thickness D of the manifold 1 corresponding to the setting position of the ultrasonic generator satisfies the following calculation formula:
where v is the propagation velocity of the ultrasonic wave, at least one second ultrasonic wave a2 is reflected by the inner surface of the manifold wall 11 closest to the corresponding ultrasonic transmitter 2 and reflected back out of the manifold 1 after n round trips in the manifold wall 11 closest to the corresponding ultrasonic transmitter 2, n being a positive integer, and the case shown in fig. 4 is the case where n is equal to 1, i.e. the second ultrasonic wave a2 is reflected to the time monitor 3 via the B surface after one round trip in the wall of the manifold 1, as can be derived by referring to the first ultrasonic wave a1 and the path of the second ultrasonic wave a2 shown in fig. 2 and 4, the difference between the path length of the second ultrasonic wave a2 corresponding to the second reception time c and the path length of the first ultrasonic wave a1 corresponding to a between the first receptions is exactly equal to four times the wall thickness D of the manifold at the corresponding position, and therefore, at least one second ultrasonic wave a2 is set to be reflected by the inner surface of the manifold wall 11 closest to the corresponding ultrasonic transmitter 2, and the pipe manifold 1 is reflected out after passing through at least one back and forth in the pipe manifold wall 11 closest to the corresponding ultrasonic transmitter 2, so that the wall thickness of the underwater pipe manifold of the marine oil and gas field can be monitored in real time, an oil transportation passage of the pipe manifold is cut off when the monitored wall thickness of the pipe manifold is abnormal, the probability of continuous leakage of the submarine pipe manifold is reduced, and the working safety of the submarine pipe manifold is improved.
For example, the ultrasonic transmitter 2 may be configured to emit at least two second ultrasonic waves a2, the at least one second ultrasonic wave a2 is configured to reflect the manifold 1 directly via the inner surface of the manifold wall 11 closest to the corresponding ultrasonic transmitter 2, and the at least one second ultrasonic wave a2 is configured to reflect the manifold 1 via the inner surface of the manifold wall 11 closest to the corresponding ultrasonic transmitter 2 and reflect the at least one second ultrasonic wave a2 back and forth within the manifold wall 11 closest to the corresponding ultrasonic transmitter 2, that is, at least two measured values of the wall thickness at the positions of the at least two manifolds 1 corresponding to the ultrasonic transmitters 2 may be obtained by using the transmission path of the second ultrasonic wave a2 shown in fig. 3 and 4, and the data processor 4 may perform an average processing on all the measured values to improve the accuracy of the wall thickness measurement of the subsea manifold.
Alternatively, as shown in fig. 1, the switching valve 10 may include a solenoid valve 102 and a safety control valve 101, the safety control valve 101 is disposed on the oil transportation path 110 of the manifold, and the solenoid valve 12 is configured to drive the safety control valve 11 to open or close the oil transportation path 110 of the manifold 1 according to a received switching control signal.
Specifically, the electromagnetic valve 102 and the safety control valve 101 may be set to have a mechanical connection relationship, and the electromagnetic valve 102 may adjust its own on-off state according to a received on-off control signal, but since the size specification of the manifold 1 is large, that is, the size specification of the oil transportation path 110 of the manifold 1 is large, and the electromagnetic valve 102 with a small size cannot directly control the opening and closing of the oil transportation path 110 of the manifold 1, the safety control valve 101 with a large size is set to directly control the opening and closing of the oil transportation path 110 of the manifold 1, and the safety control valve 101 may be opened or closed under the influence of the on-off state of the electromagnetic valve 102 under the driving of a mechanical device between the electromagnetic valve 102 and the safety control valve 101.
For example, when the data processor 4 judges that the wall thickness of the manifold 1 corresponding to the position of the ultrasonic generator 2 is greater than or equal to the standard wall thickness value according to the received receiving time signal, the control solenoid valve 102 is opened, the solenoid valve 120 drives the safety control valve 101 to be opened through a mechanical device between the solenoid valve and the safety control valve 101, so that the oil transportation passage 110 of the manifold 1 is opened, and the manifold 1 transports oil and gas. When the data processor 4 judges that the wall thickness of the manifold 1 corresponding to the position of the ultrasonic generator 2 is smaller than the standard wall thickness value according to the received receiving time signal, the control electromagnetic valve 102 is closed, the electromagnetic valve 102 drives the safety control valve 101 to be closed through a mechanical device between the electromagnetic valve 102 and the safety control valve 102, so that the oil transportation passage 110 of the manifold 1 is closed, the process that the manifold 1 transports oil gas is stopped, the probability that the submarine manifold continues to leak is reduced, and the safety of the submarine manifold in work is improved.
Optionally, the data processor 4 is further configured to adjust the generated first electrical control signal according to the received receiving time signal, and the subsea manifold wall thickness monitoring apparatus further includes a first electrical control moving structure (not shown in fig. 1) configured to drive the electromagnetic valve 102 and the safety control valve 101 to move along the axial direction b1 of the manifold 1 according to the received first electrical control signal.
For example, the first electrically controlled moving structure may be, for example, a mechanical structure capable of driving the electromagnetic valve 102 and the safety control valve 101 to move along the axial direction b1 of the manifold 1, a specific mechanical implementation form of the first electrically controlled moving structure is not limited in the present embodiment, the data processor 4 adjusts the generated first electrically controlled signal according to the received receiving time signal, for example, the time monitor 3 sends the receiving time signal to the data processor 4 after receiving the reflected first ultrasonic wave a1 and the second ultrasonic wave a2, the data processor 4 determines that the ultrasonic testing for the wall thickness of a certain cross-sectional position of the manifold 1 perpendicular to the axial direction b1 is completed and the data processor 4 has sent a corresponding switch control signal to the electromagnetic valve 102 after receiving the receiving time signal, and the data processor 4 adjusts the generated first electrically controlled moving structure at this time to control the electromagnetic valve 102 and the safety control valve 101 to move to the next position along the axial direction b1, when the wall thicknesses of different positions of the manifold 1, which are perpendicular to the axial direction b1, are abnormal, the electromagnetic valve 102 and the safety control valve 101 can be driven by the first electric control moving structure to move to corresponding positions, and the oil delivery passage of the manifold corresponding to the position with the thinner wall thickness is closed. Therefore, the data processor 4 and the first electric control moving structure are utilized to realize the shutoff of the oil transportation passages at different positions corresponding to the manifold with thinner wall thickness, and simultaneously, the quantity of the electromagnetic valves 102 and the safety control valves 101 is favorably reduced, so that the cost of the manifold monitoring device is reduced.
Fig. 5 is a schematic structural diagram of another subsea manifold wall thickness monitoring device according to an embodiment of the present invention. On the basis of the above embodiment, the data processor 4 may be configured to include a data analyzer 41 and a data transmitter 42, the data analyzer 41 is configured to obtain the wall thickness of the manifold 1 corresponding to the position where the ultrasonic transmitter 2 is disposed according to the received receiving time signal and generate a thickness signal, and the data transmitter 42 is configured to convert the received thickness signal into a thickness storage signal in the form of storage data and transmit the thickness storage signal to the mobile terminal 6.
Specifically, with reference to fig. 1 to 4, the time monitor 3 sends a receiving time signal to the data analyzer 41, the receiving time signal includes time information of the first ultrasonic wave a1 and the second ultrasonic wave a2 reflected by the time monitor 3, the data analyzer 41 can perform the above-mentioned process of calculating the wall thickness D according to the time information and generate a thickness signal including wall thickness information of the location where the manifold 1 corresponds to the ultrasonic transmitter 2, the data transmitter 42 converts the received thickness signal into a thickness storage signal in the form of stored data and sends the thickness storage signal to the mobile terminal 6, the mobile terminal 6 can be, for example, a computer, and the data transmitter 42 is in communication connection with the mobile terminal 6, that is, the data transmitter 42 transmits a wireless signal to the mobile terminal 6. The receiving time signal, the thickness signal and the thickness storage signal are all digital signals, the data transmitter 42 converts the thickness signal output by the data analyzer 41 into a storage signal which can be identified by a computer, the storage of the manifold wall thickness data in the computer is realized, and the manifold wall thickness data stored in the computer can be called for a user to perform data analysis when the user needs.
It should be noted that the data processor 4 may be configured to control the pointing device 5, for example, the data analyzer 41 may be configured to control the pointing device 5, or the mobile terminal 6 may be configured to control the pointing device 5, which is not limited in the embodiment of the present invention. In addition, the data processor 4 may be configured to compare the manifold wall thickness with the standard wall thickness value, for example, the data analyzer 41 may be configured to compare the manifold wall thickness with the standard wall thickness value, or the mobile terminal 6 may be configured to compare the manifold wall thickness with the standard wall thickness value, and the indicator 5 may be controlled by the mobile terminal 6.
Fig. 6 is a schematic top view of a subsea manifold according to an embodiment of the present invention. With reference to fig. 2 to 4 and 6, it may be provided that the subsea manifold wall thickness monitoring device comprises a plurality of ultrasonic transmitters 2, the plurality of ultrasonic transmitters 2 are located in the same plane parallel to the cross section of the manifold 1, and the plurality of ultrasonic transmitters 2 are uniformly distributed with respect to the axial direction b1 of the manifold 1. Fig. 6 exemplarily shows that the submarine manifold 1 wall thickness monitoring device comprises eight ultrasonic transmitters 2, and two adjacent ultrasonic transmitters 2 are arranged at an interval of 45 ° with respect to the central axis of the manifold 1, so that the monitoring of the wall thickness of the manifold 1 at different positions on the same cross-sectional plane of the manifold 1 can be realized by using a plurality of ultrasonic transmitters 2 uniformly distributed with respect to the axial direction b1 of the manifold 1, and the wall thickness of the manifold 1 at a position closer to the aforementioned cross-sectional plane is not greatly different, and the plurality of ultrasonic transmitters 2 are uniformly distributed with respect to the axial direction b1 of the manifold 1, so that while the monitoring of the wall thickness of the manifold 1 at different positions on the same cross-sectional plane of the manifold 1 is realized, the number of ultrasonic transmitters 2 is favorably reduced, and the cost of the manifold 1 monitoring device is reduced.
Alternatively, with reference to fig. 2 to 4 and fig. 6, the plurality of ultrasonic transmitters 2 may be arranged to be movable along the axial direction b1 of the manifold 1, for example, the data processor may be further configured to adjust the generated second electrical control signal according to the received receiving time signal, and the subsea manifold wall thickness monitoring apparatus further includes a second electrical control moving structure (not shown in fig. 6), and the second electrical control moving structure is configured to move the plurality of ultrasonic transmitters 2 along the axial direction b1 of the manifold 1 according to the received second electrical control signal.
For example, the second electrically controlled moving structure may be a mechanical structure capable of driving all the ultrasonic transmitters 2 to move along the axial direction b1 of the manifold 1, the embodiment of the present invention does not limit the specific mechanical implementation form of the second electrically controlled moving structure, the data processor 4 adjusts the generated second electrically controlled signal according to the received receiving time signal, for example, the time monitor 3 sends a receiving time signal to the data processor 4 after receiving the reflected first ultrasonic wave a1 and the second ultrasonic wave a2, the data processor 4 determines that the ultrasonic testing of the wall thickness of a certain cross section of the manifold 1 perpendicular to the axial direction b1 is completed after receiving the receiving time signal, and the data processor 4 adjusts the generated second electric control signal to control the second electric control moving structure to drive all the ultrasonic emitters 2 to move to the next position along the axial direction b1, so that the wall thickness of different positions on another cross section of the manifold 1 perpendicular to the axial direction b1 can be monitored. In this way, the data processor 4 and the second electrically controlled moving structure are utilized to realize wall thickness monitoring of the manifold 1 at different positions along the axial direction b1, and meanwhile, the number of acoustic emitters is reduced, and further, the cost of the manifold 1 monitoring device is reduced.
Optionally, as shown in fig. 1, the data processor 4 is further configured to obtain, according to the received receiving time signal, a wall thickness of the manifold 1 corresponding to the position where the ultrasonic transmitter 2 is disposed, so as to adjust the generated indication control signal, and the subsea manifold wall thickness monitoring apparatus further includes an indication device 5, where the indication device 5 is configured to adjust its own indication state according to the received indication control signal.
For example, the data processor 4 may store a standard comparison value of the manifold wall thickness, and if the value is lower than the standard comparison value, it is determined that the manifold wall thickness is too small, and it may be determined that the wall thickness of the manifold at the position of the manifold 1 is too thin due to erosion of a large amount of salts, microorganisms and other substances existing in the marine environment, and thus the safety of the submarine manifold transportation cannot be ensured. When the data processor 4 judges that the wall thickness of the pipe manifold 1 corresponding to the position where the ultrasonic transmitter 2 is arranged is smaller than the standard comparison value of the wall thickness of the pipe manifold 1 according to the received receiving time signal, the generated indication control signal can be adjusted to control the indicating device 5 to indicate the corresponding direction to the user.
Therefore, the wall thickness monitoring device of the submarine manifold realizes real-time monitoring of the wall thickness of the submarine manifold 1 of the marine oil and gas field, and indicates when the monitored wall thickness of the manifold is abnormal, which is beneficial for a user to timely master the working safety state of the submarine manifold, and the submarine manifold is an important guarantee measure for offshore oil and gas production and an important content for asset integrity management of a marine pipeline operator.
For example, the indication device 5 may be disposed at the controller, for example, the indication device 5 may be disposed at a position convenient for a user to observe, and the transmission of the indication control signal between the data processor 4 and the indication device 5 may be in a wireless signal transmission manner, that is, the data processor 4 and the indication device 5 may be disposed in communication connection.
Illustratively, the indication means 5 may comprise a display indication means and/or a sound indication means, i.e. the indication means 5 may comprise only a display indication means, such as a light emitting diode, or only a sound indication means, such as a buzzer, or the indication means 5 may comprise both a display indication means and a sound indication means, to enable a visual and audible prompt to the user when an abnormality in the wall thickness of the manifold is monitored. The embodiment of the invention also provides a method for monitoring the wall thickness of the submarine manifold, which can be applied to a scene needing to monitor the wall thickness of the submarine manifold, and can be executed by the device for monitoring the wall thickness of the submarine manifold in the embodiment, and fig. 7 is a schematic flow chart of the method for monitoring the wall thickness of the submarine manifold provided by the embodiment of the invention. As shown in fig. 7, the monitoring method includes:
s110, the ultrasonic transmitter sends a first ultrasonic wave and at least one second ultrasonic wave to a manifold; the ultrasonic emitters are located outside the manifold, the first ultrasonic waves are reflected by the outer surface of the manifold wall, and the second ultrasonic waves are reflected by the inner surface of the manifold wall closest to the corresponding ultrasonic emitters.
Alternatively, with reference to fig. 1 to 6, the at least one second ultrasonic wave a2 directly reflects off the manifold 1 via the inner surface of the manifold wall 11 closest to the corresponding ultrasonic transmitter 2, and the data processor 4 obtaining the wall thickness of the manifold 1 at the position where the corresponding ultrasonic generator is disposed according to the received receiving time signal includes:
the first receiving time included in the receiving time signal corresponding to the first ultrasonic wave a1 received by the data processor 4 is a, the second receiving time included in the receiving time signal corresponding to the second ultrasonic wave a2 received by the data processor 4 is b, and the wall thickness D of the manifold 1 corresponding to the installation position of the ultrasonic generator satisfies the following calculation formula:
where v is the propagation velocity of the ultrasonic wave.
Optionally, at least one second ultrasonic wave a2 is reflected via the inner surface of the manifold 1 wall closest to the corresponding ultrasonic emitter 2 and is reflected out of the manifold 1 after n round trips within the manifold wall 11 closest to the corresponding ultrasonic emitter 2; wherein n is a positive integer;
the data processor 4 obtains the wall thickness of the manifold 1 corresponding to the setting position of the ultrasonic generator according to the received receiving time signal, and the wall thickness comprises the following steps:
the first receiving time included in the receiving time signal corresponding to the first ultrasonic wave a1 received by the data processor 4 is a, the second receiving time included in the receiving time signal corresponding to the second ultrasonic wave a2 received by the data processor 4 is c, and the wall thickness D of the manifold 1 corresponding to the installation position of the ultrasonic generator satisfies the following calculation formula:
where v is the propagation velocity of the ultrasonic wave.
S120, the time monitor adjusts the output receiving time signal according to the received first ultrasonic wave and the at least one second ultrasonic wave reflected by the manifold.
S130, the data processor obtains the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received receiving time signal so as to adjust the generated switch control signal.
And S140, the switching valve opens or closes the oil transportation passage of the manifold according to the received switching control signal.
According to the embodiment of the invention, the wall thickness of the underwater manifold of the marine oil and gas field is monitored in real time by using at least one ultrasonic transmitter, a time monitor, a data processor and a switch valve which are positioned outside the manifold, and the oil transportation passage of the manifold is cut off when the monitored wall thickness of the manifold is abnormal, so that the probability of continuous leakage of the submarine manifold is reduced, and the working safety of the submarine manifold is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A subsea manifold wall thickness monitoring device, comprising:
at least one ultrasonic transmitter located outside the manifold, the ultrasonic transmitter configured to emit a first ultrasonic wave and at least one second ultrasonic wave toward the manifold; wherein the first ultrasonic wave is reflected via an outer surface of a manifold wall, and the second ultrasonic wave is reflected via an inner surface of the manifold wall that is closest to the corresponding ultrasonic transmitter;
a time monitor for adjusting an output receive time signal based on the received first and at least one second ultrasonic waves reflected via the manifold;
the data processor is used for acquiring the wall thickness of the manifold corresponding to the setting position of the ultrasonic transmitter according to the received receiving time signal so as to adjust the generated switch control signal;
and the switching valve is used for opening or closing the oil transportation passage of the manifold according to the received switching control signal.
2. Subsea manifold wall thickness monitoring device according to claim 1, characterized in that at least one of the second ultrasonic waves is reflected directly out of the manifold via the inner surface of the manifold wall closest to the corresponding ultrasonic transmitter.
3. Subsea manifold wall thickness monitoring device according to claim 1 or 2, characterized in that at least one of the second ultrasonic waves is reflected via the inner surface of the manifold wall closest to the respective ultrasonic transmitter and is reflected out of the manifold after at least one round trip within the manifold wall closest to the respective ultrasonic transmitter.
4. The subsea manifold wall thickness monitoring device of claim 1, wherein the switch valve comprises:
the safety control valve is arranged on an oil transportation passage of the manifold, and the electromagnetic valve is used for driving the safety control valve to open or close the oil transportation passage of the manifold according to the received switch control signal.
5. The subsea manifold wall thickness monitoring device according to claim 4, wherein the data processor is further configured to adjust the generated first electrical control signal in accordance with the received reception time signal;
the submarine manifold wall thickness monitoring device further comprises:
and the first electric control moving structure is used for driving the electromagnetic valve and the safety control valve to move along the axial direction of the manifold according to the received first electric control signal.
6. The subsea manifold wall thickness monitoring device according to claim 1, wherein the data processor comprises:
the data analyzer is used for obtaining the wall thickness of the manifold corresponding to the setting position of the ultrasonic transmitter according to the received receiving time signal and generating a thickness signal;
and the data transmitter is used for converting the received thickness signal into a thickness storage signal in a storage data form and transmitting the thickness storage signal to the mobile terminal.
7. The subsea manifold wall thickness monitoring device according to claim 1, wherein the data processor is further configured to obtain a wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received reception time signal so as to adjust the generated indication control signal;
the submarine manifold wall thickness monitoring device further comprises:
and the indicating device is used for adjusting the indicating state of the indicating device according to the received indicating control signal, and comprises a display indicating device and/or a sound indicating device.
8. A subsea manifold wall thickness monitoring method, comprising:
an ultrasonic transmitter sends a first ultrasonic wave and at least one second ultrasonic wave to the manifold; wherein the ultrasonic emitters are located outside the manifold, the first ultrasonic wave is reflected via an outer surface of a manifold wall, and the second ultrasonic wave is reflected via an inner surface of the manifold wall that is closest to the corresponding ultrasonic emitter;
the time monitor adjusts a received time signal of an output according to the received first ultrasonic wave and the at least one second ultrasonic wave reflected by the manifold;
the data processor acquires the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received receiving time signal so as to adjust the generated switch control signal;
and the switching valve opens or closes the oil transportation passage of the manifold according to the received switching control signal.
9. The subsea manifold wall thickness monitoring method according to claim 8, wherein at least one of the second ultrasonic waves is reflected directly off the manifold via an inner surface of the manifold wall closest to the corresponding ultrasonic transmitter, and the data processor obtaining the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received time signal comprises:
the first receiving time contained in the receiving time signal corresponding to the first ultrasonic wave received by the data processor is a, the second receiving time contained in the receiving time signal corresponding to the second ultrasonic wave received by the data processor is b, and the wall thickness D of the manifold corresponding to the setting position of the ultrasonic generator satisfies the following calculation formula:
where v is the propagation velocity of the ultrasonic wave.
10. The subsea manifold wall thickness monitoring method according to claim 8, wherein at least one of the second ultrasonic waves is reflected via the inner surface of the manifold wall closest to the corresponding ultrasonic transmitter and is reflected out of the manifold after n round trips within the manifold wall closest to the corresponding ultrasonic transmitter; wherein n is a positive integer;
the data processor obtains the wall thickness of the manifold corresponding to the setting position of the ultrasonic generator according to the received receiving time signal, and the wall thickness comprises the following steps:
a first receiving time included in a receiving time signal corresponding to the first ultrasonic wave received by the data processor is a, a second receiving time included in a receiving time signal corresponding to the second ultrasonic wave received by the data processor is c, and a wall thickness D of the manifold corresponding to the setting position of the ultrasonic generator satisfies the following calculation formula:
where v is the propagation velocity of the ultrasonic wave.
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