Intelligent control system and method for ultrasonic descaling

Abstract

The invention discloses an ultrasonic descaling intelligent control system and method. The system comprises a control panel, and an electric control dragging device, a descaling device based on ultrasonic waves and a distance measuring device which are electrically connected with the control panel respectively, the descaling device comprises a magnetostriction unit, in a working state, the magnetostriction unit generates corresponding vibration under the action of alternating current, and generated ultrasonic waves act on scale bodies on the inner wall of the pipeline; the control panel is used for responding to a working instruction sent by the control terminal, achieving crawling of the system in a pipeline by controlling a power unit of the electric control dragging device, and determining the thickness of a scale body according to an electric signal sent by the distance measuring device if crawling is blocked. And according to the corresponding relation between the scale body thickness and the descaling alternating current control parameter, the optimal control parameter is determined, power is supplied to the magnetostriction unit, and descaling work is carried out. According to the system, automatic crawling of the system can be achieved through electric control, the optimal alternating current control parameters are automatically determined when the system encounters scale during crawling, and the descaling device is controlled to conduct intelligent descaling.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent control and ultrasonic descaling, and in particular to an ultrasonic descaling intelligent control system and method. Background Art

[0002] There are many types of downhole equipment and instruments in the petroleum industry, such as submersible units, downhole electric water distributors, downhole electric production distributors, downhole sensor short sections, etc. These downhole equipment or devices are equipped with production channels and operate for a long time underground. However, under the influence of the complex environment underground, the production channel is easily blocked by factors such as impurities, wax deposition, and scaling, affecting continuous production. Oil production plants usually carry out relevant downhole operations to restore the channel. The existing anti-scaling and descaling methods are mainly based on chemicals, supplemented by mechanical methods. At present, ultrasonic anti-scaling and descaling devices have been applied in oil fields and have certain effects, but their range and duration of action are limited by the characteristics of piezoelectric ceramic materials. The temperature resistance for stable and long-term operation is half of the Curie temperature of the material. After the material exceeds the Curie temperature, it will depolarize and the piezoelectric effect will disappear. At present, the working temperature of the more economical industrial piezoelectric ceramics needs to be controlled within 150°C, the depth of entry is limited, and the working time is short, so that the advantages of ultrasound cannot be fully utilized. In addition, the prior art usually only uses a ground winch to lift and lower the ultrasonic device, which cannot adapt to complex on-site conditions. Summary of the invention

[0003] In order to enrich product types, enrich process routes, and increase selection space, the embodiment of the present invention provides an ultrasonic descaling intelligent control system and method, which can realize automatic descaling of the inner wall of the pipeline through electrical control.

[0004] In a first aspect, an embodiment of the present invention provides an ultrasonic descaling intelligent control system, comprising a control panel, an electric control traction device electrically connected to the control panel, and an ultrasonic-based descaling device and a distance measuring device;

[0005] The descaling device comprises a magnetostrictive unit. In a working state, the magnetostrictive unit vibrates accordingly under the action of the alternating current passing therethrough, and the generated ultrasonic wave acts on the scale on the inner wall of the pipeline.

[0006] The control panel is used to respond to the work instructions sent by the control terminal, and realize the crawling of the system in the pipeline by controlling the power unit of the electric-controlled traction device. If the crawling encounters resistance, it is also used to determine the thickness of the scale body according to the electrical signal sent by the distance measuring device, determine the optimal control parameter according to the stored correspondence between the thickness of the scale body and the control parameter of the descaling alternating current, and power the magnetostrictive unit of the descaling device according to the optimal control parameter to perform the descaling work.

[0007] Optionally, the electrically controlled traction device further comprises a transmission shaft connected to the power unit;

[0008] A first electromagnetic clutch is provided on the transmission shaft, and the first clutch is connected to the bevel gear and the crawler wheel in sequence. When the first clutch is in a closed state, the power output by the power unit is transmitted to the crawler wheel through the transmission shaft and the bevel gear in sequence, so that the crawler wheel crawls along the inner wall of the pipeline, thereby realizing the crawling of the system.

[0009] Optionally, the first clutch is connected to at least two sets of bevel gears and a crawler wheel.

[0010] Optionally, the other end of the transmission shaft is connected to a screw rod, and the screw rod is matched with a wedge block and an anchoring slip in sequence;

[0011] A second clutch is also provided between the screw and the first clutch on the transmission shaft;

[0012] When the first clutch is disconnected and the second clutch is closed, the power output by the power unit is transmitted to the screw through the transmission shaft, so that the wedge block moves, and then the anchoring slip is ejected, and the anchoring of the system is achieved through the contact between the anchoring slip and the inner wall of the pipeline;

[0013] An elastic limiting structure is provided on the outer side of the anchoring slip, and when the wedge block is withdrawn, the elastic limiting structure is used to push the anchoring slip back.

[0014] Optionally, a self-locking lifting angle is provided between the screw rod and the wedge block, so that after the anchoring slip is pushed out into place and the power unit stops working, the anchoring slip is not pushed back.

[0015] Optionally, the magnetostrictive unit includes a magnetostrictive rod and a coil wound around the periphery of the magnetostrictive rod;

[0016] The front end of the magnetostrictive rod is connected to a first impact hammer. In a working state, the coil is powered according to the determined optimal control parameters, so that the magnetostrictive rod vibrates accordingly. The generated ultrasonic wave is amplified by the first impact hammer and acts on the scale on the inner wall of the pipeline.

[0017] Optionally, a second impact hammer is connected between the front end of the magnetostrictive rod and the first impact hammer, and the size of the second impact hammer is smaller than that of the first impact hammer.

[0018] Optionally, a first matching pad is provided between the front end of the magnetostrictive rod and the second impact hammer, and a second matching pad is provided at the rear end of the magnetostrictive rod.

[0019] Optionally, a wall-breaking hammer is further provided at the front end of the descaling device, and the wall-breaking hammer is connected to the front end of the descaling device via a variable amplitude rod.

[0020] Optionally, the system further comprises a main body;

[0021] The control panel, the electric-controlled traction device and the descaling device are fixed on the main body in sequence from the back to the front.

[0022] In a second aspect, an embodiment of the present invention provides an ultrasonic descaling intelligent control method, comprising descaling a target pipe through any of the ultrasonic descaling intelligent control systems described above, comprising the following steps:

[0023] The control panel of the ultrasonic descaling intelligent control system responds to the working instructions sent by the control terminal and realizes the crawling of the system in the target pipeline by controlling the power unit of the electric-controlled traction device;

[0024] If the crawling encounters resistance, it is determined that there is a scale body at the current position of the inner wall of the target pipeline, and the distance measuring device is notified to measure the distance. The thickness of the scale body is determined according to the electrical signal sent by the distance measuring device. The optimal control parameter is determined according to the corresponding relationship between the stored scale body thickness and the descaling alternating current control parameter, and the magnetostrictive unit of the descaling device is powered according to the optimal control parameter to perform the descaling work.

[0025] Optionally, after the descaling operation is performed, the method further includes:

[0026] Notifying the distance measuring device to measure the distance, and judging whether the descaling effect meets the requirements according to the electrical signal sent by the distance measuring device;

[0027] If yes, stop working and send a notification of descaling completion to the control terminal;

[0028] If not, the scale thickness is determined according to the electrical signal, the optimal control parameter is determined according to the corresponding relationship between the scale thickness and the descaling alternating current control parameter, and the magnetostrictive unit of the descaling device is powered according to the optimal control parameter to continue the descaling work.

[0029] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0030] (1) The ultrasonic descaling intelligent control system provided by the embodiment of the present invention realizes the automatic crawling of the system in the pipeline by controlling the power unit of the electric control traction device; when the automatic crawling encounters resistance, it determines that scale is encountered, determines the optimal control parameters based on the pre-stored correspondence between the scale thickness and the descaling alternating current control parameters, and controls the descaling device to perform intelligent descaling. The system realizes automatic crawling and intelligent descaling in the pipeline through electrical control.

[0031] (2) The ultrasonic descaling intelligent control system provided in the embodiment of the present invention pre-establishes the corresponding relationship between the thickness of the scale body and the descaling alternating current control parameters. During the descaling operation, the optimal alternating current control parameters can be determined according to the thickness of the scale body, and the magnetostrictive unit of the descaling device is powered to vibrate accordingly. The generated ultrasonic wave acts on the scale body on the inner wall of the pipe, which can remove scale faster and more effectively and save operating costs.

[0032] (3) The ultrasonic descaling intelligent control system provided in the embodiment of the present invention is based on an ultrasonic descaling device provided with a wedge block and an anchoring slip matched with the screw. Through the contact between the anchoring slip and the inner wall of the pipe, not only can the system be anchored, but also the ultrasonic wave can be directly loaded onto the pipe wall, further expanding the ultrasonic wave propagation range, so that the ultrasonic wave acts on the inner and outer surfaces of the scale body at the same time, thereby increasing the descaling effect.

[0033] (4) In the ultrasonic descaling intelligent control system provided by the embodiment of the present invention, the magnetostrictive unit includes a magnetostrictive rod and a coil wound around the magnetostrictive rod. The high temperature resistance of the magnetostrictive rod enables the system to have high temperature adaptability.

[0034] (5) In the ultrasonic descaling intelligent control system provided by the embodiment of the present invention, a wall-breaking hammer is also provided at the front end of the descaling device. The wall-breaking hammer is connected to the front end of the descaling device through a variable amplitude rod. During the operation of the descaling device, the wall-breaking hammer at the front end produces a mechanical knocking effect on the scale body in the pipe through the variable amplitude rod, thereby generating induced cracks, thereby promoting the ultrasonic effect to peel off the scale body and crush it.

[0035] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0036] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0038] Figure 1 Schematic diagram of the cross-sectional structure of the ultrasonic descaling intelligent control system in the first embodiment of the present invention;

[0039] Figure 2 Schematic diagram of an ultrasonic descaling intelligent control system in Embodiment 1 of the present invention;

[0040] Figure 3 It is a structural schematic diagram of the electric-controlled traction device in the first embodiment of the present invention;

[0041] Figure 4 It is a schematic diagram of an electric-controlled traction device in Embodiment 1 of the present invention;

[0042] Figure 5 This is a schematic diagram of the structure of a descaling device in Embodiment 1 of the present invention;

[0043] Figure 6 It is a cross-sectional structural schematic diagram of another ultrasonic descaling intelligent control system in Embodiment 1 of the present invention;

[0044] Figure 7 Flow chart of the ultrasonic descaling intelligent control method in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] It should be understood that the terms described in the present invention are only for describing special embodiments and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0047] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the invention belongs. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials related to the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0048] In the description of the present invention, it should be noted that the terms "include", "including", "have", "contain" and the like are open terms, meaning including but not limited to.

[0049] The embodiment of the present invention provides an ultrasonic descaling intelligent control system and method, which can realize automatic crawling of the system through electrical control, determine that scale is encountered when the automatic crawling encounters resistance, automatically determine the optimal descaling spectrum, and control the descaling device to perform intelligent descaling.

[0050] Embodiment 1

[0051] Embodiment 1 of the present invention provides an ultrasonic descaling intelligent control system, the structure of which is as follows Figure 1 and Figure 2 As shown, it includes a control board 1, an electric-controlled traction device 2 electrically connected to the control board 1, an ultrasonic-based descaling device 3, and a distance measuring device (not shown in the figure).

[0052] The descaling device 3 comprises a magnetostrictive unit 31. In the working state, the magnetostrictive unit 31 vibrates accordingly under the action of the alternating current passing therethrough, and the generated ultrasonic wave acts on the scale on the inner wall of the pipeline.

[0053] The control panel 1 is used to respond to the work instructions sent by the control terminal, and realize the crawling of the system in the pipeline by controlling the power unit 21 of the electric-controlled traction device 2; if the crawling is blocked, it is also used to determine the thickness of the scale body according to the electrical signal sent by the distance measuring device, determine the optimal control parameters according to the corresponding relationship between the stored scale body thickness and the descaling alternating current control parameters, and power the magnetostrictive unit 31 of the descaling device 3 according to the determined optimal control parameters to make it vibrate accordingly, and the generated ultrasonic wave propagates through the formation water and oil and other media in the annulus to act on the scale body to perform the descaling work.

[0054] Taking the working environment of downhole oil pipe descaling as an example, the ground winch lowers the cable connected to the ultrasonic descaling intelligent control system, and relies on the system's own gravity to lower the system in the oil pipe. During the lowering process, when the control terminal detects that the ground winch cannot lower the cable, that is, the system cannot go down by its own gravity, it is determined that the system encounters resistance, and sends a work instruction to the system's control panel, so that the control panel controls the electric control drag device to continue to descend the system. If automatic crawling can be achieved, it is determined that the resistance is soft resistance, such as excessive well inclination, or resistance by sludge impurities, etc.; if automatic crawling encounters resistance, it is determined that the resistance is hard resistance, that is, scale, and the control panel controls the descaling device to perform intelligent descaling. Until the descaling is completed, the work stops, and a notification of descaling completion is sent to the control terminal. Then the system enters the standby state, and enters the working state again after receiving the work instruction sent by the control terminal again.

[0055] In the ultrasonic descaling intelligent control system provided in the first embodiment of the present invention, the control board realizes the automatic crawling of the system in the pipeline by controlling the power unit of the electric control traction device; when the automatic crawling encounters resistance, it determines that scale is encountered, determines the optimal control parameters based on the correspondence between the thickness of the scale body and the descaling alternating current control parameters stored in advance, and controls the descaling device to perform intelligent descaling. The system realizes the automatic crawling and intelligent descaling of the system in the pipeline through electric control.

[0056] The above-mentioned descaling alternating current control parameters are the data of the change of the frequency and power of the alternating current over time during the descaling process, including three parameters: the frequency and power of the alternating current and the power supply time (descaling time); the corresponding relationship between the scale body thickness and the descaling alternating current control parameters is pre-established based on experimental data.

[0057] The corresponding relationship between the thickness of the scale body and the control parameters of the descaling alternating current is established in advance. During the descaling operation, the optimal alternating current control parameters can be determined according to the thickness of the scale body, and the magnetostrictive unit of the descaling device is powered to make it vibrate accordingly. The generated ultrasonic wave acts on the scale body on the inner wall of the pipe, which can remove scale faster and more effectively and save operation costs.

[0058] Optionally, the power unit 21 includes a motor and a reducer.

[0059] See also Figure 3 As shown, the electric-controlled traction device 2 also includes a transmission shaft 22 connected to the power unit 21; a first electromagnetic clutch 23 is provided on the transmission shaft 22, and the first clutch 23 is connected to the bevel gear 24 and the crawler wheel 25 in sequence. When the first clutch 23 is closed, the power output of the power unit 21 is transmitted to the crawler wheel 25 through the transmission shaft 22 and the bevel gear 24 in sequence, so that the crawler wheel 25 crawls along the inner wall of the pipeline, thereby realizing the crawling of the system.

[0060] For further information, see Figure 4 As shown, the first clutch 23 is connected to at least two sets of bevel gears 24 and a crawler wheel 25 .

[0061] Furthermore, the other end of the transmission shaft 22 is connected to a screw rod 26, which is in turn equipped with a wedge block 27 and an anchoring slip 28. A second clutch 29 is also provided between the screw rod 26 and the first clutch 23 on the transmission shaft 22. When the first clutch 23 is disconnected and the second clutch 29 is closed, the power output of the power unit 21 is transmitted to the screw rod 26 through the transmission shaft 22, so that the wedge block 27 moves, and then the anchoring slip 28 is pushed out, and the system is anchored by the contact between the anchoring slip 28 and the inner wall of the pipeline.

[0062] There is an elastic limiting structure on the outside of the anchoring slip 28, and when the wedge block 27 is withdrawn, the elastic limiting structure is used to push the anchoring slip 28 back.

[0063] Furthermore, the withdrawal of the wedge block 27 is achieved by following the reverse rotation of the screw.

[0064] A self-locking lifting angle is provided between the screw rod 26 and the wedge block 27, so that after the anchoring slip 28 is pushed out into position and the power unit 21 stops working, the anchoring slip 28 is not pushed back.

[0065] The ultrasonic descaling intelligent control system provided in the first embodiment of the present invention is based on an ultrasonic descaling device provided with a wedge block and an anchoring slip matching the screw. Through the contact between the anchoring slip and the inner wall of the pipe, not only can the system be anchored, but also the ultrasonic wave can be directly loaded onto the pipe wall, further expanding the ultrasonic wave propagation range, so that the ultrasonic wave acts on the inner and outer surfaces of the scale body at the same time, thereby increasing the descaling effect.

[0066] See also Figure 5 As shown, the magnetostrictive unit 31 comprises a magnetostrictive rod 311 and a coil 312 wound around the magnetostrictive rod 311. The high temperature resistance of the magnetostrictive rod 311 enables the system to have high temperature adaptability.

[0067] The front end of the magnetostrictive rod 311 is connected to a first impact hammer 32. In the working state, the coil 312 is powered according to the determined optimal control parameters, so that the magnetostrictive rod 311 vibrates accordingly. The generated ultrasonic wave is amplified by the first impact hammer 32 and acts on the scale on the inner wall of the pipeline.

[0068] Furthermore, a second impact hammer 33 is connected between the front end of the magnetostrictive rod 311 and the first impact hammer 32, and the size of the second impact hammer 33 is smaller than the first impact hammer 32. A first matching pad 34 is provided between the front end of the magnetostrictive rod 311 and the second impact hammer 33, and a second matching pad 35 is provided at the rear end of the magnetostrictive rod 311.

[0069] Optionally, a backing 36 is further provided between the second matching pad 35 and the rear end electric-controlled traction device 2 .

[0070] During operation, an alternating current with matching frequency and power passes through the coil, causing the magnetostrictive rod to vibrate with a certain frequency and amplitude. The ultrasonic wave generated by the vibration is amplified by the second impact hammer (small) and the first impact hammer (large) in turn, and then acts on the scale on the inner wall of the pipe.

[0071] In some embodiments, see Figure 6 As shown, the descaling device 3 may also be provided with a wall-breaking hammer 37 at the front end thereof, and the wall-breaking hammer is connected to the front end of the descaling device 3 via a horn 38 .

[0072] During the operation of the descaling device, the wall-breaking hammer at the front end produces a mechanical knocking effect on the scale in the pipe through the amplitude rod, resulting in induced cracks, which in turn promotes the ultrasonic effect to peel off the scale and crush it into pieces.

[0073] It should be understood that the front end in this embodiment refers to the direction in which the system moves in the lowered pipeline.

[0074] The system described in the first embodiment of the present invention further comprises a main body 4, and the control panel 1, the electric control traction device 2 and the descaling device 3 are fixed on the main body 4 in order from back to front. The ultrasonic distance measuring device is arranged on the main body 4 near the front end.

[0075] Embodiment 2

[0076] Embodiment 2 of the present invention provides an ultrasonic descaling intelligent control method, the process of which is as follows Figure 7 As shown, it includes descaling the target pipeline by using any of the above-mentioned ultrasonic descaling intelligent control systems, specifically including the following steps:

[0077] Step S71: The control panel of the ultrasonic descaling intelligent control system, in response to the working instruction sent by the control terminal, controls the power unit of the electric-controlled traction device to realize the crawling of the system in the target pipeline.

[0078] Step S72: If the crawling encounters resistance, it is determined that there is a scale body at the current position of the inner wall of the target pipeline, and the distance measuring device is notified to measure the distance. The thickness of the scale body is determined according to the electrical signal sent by the distance measuring device. The optimal control parameters are determined according to the corresponding relationship between the stored scale body thickness and the descaling alternating current control parameters. The magnetostrictive unit of the descaling device is powered according to the optimal control parameters to perform the descaling work.

[0079] In some embodiments, step S72 may further include notifying a distance measuring device to measure the distance, and judging whether the descaling effect meets the requirements according to the electrical signal sent by the distance measuring device; if so, stopping the work and sending a notification of descaling completion to the control terminal; if not, determining the thickness of the scale body according to the electrical signal, determining the optimal control parameter according to the corresponding relationship between the thickness of the scale body and the descaling alternating current control parameter, and supplying power to the magnetostrictive unit of the descaling device according to the optimal control parameter to continue the descaling work.

[0080] Optionally, since the optimal descaling alternating current control parameters are obtained through optimization, after performing the descaling work for a corresponding period of time according to the optimal descaling alternating current control parameters, it can be determined that the descaling work has basically been completed, and there is no need to measure the distance and make judgments subsequently. It can be directly determined that the current descaling task has been completed, the work is stopped, and a notification of descaling completion is sent to the control terminal.

[0081] Embodiment 3

[0082] Embodiment 3 of the present invention provides a method for intelligent control of ultrasonic descaling of downhole oil pipes, comprising using any of the above-mentioned intelligent control systems for ultrasonic descaling to perform descaling through the following steps:

[0083] (1) Connect the other end of the cable connected to the ground winch to the upper end of the ultrasonic descaling intelligent control system, lower the cable through the winch, and send the system into the wellhead and downward.

[0084] (2) There are three situations in the lowering process: ① When the machine can be lowered by its own weight, it is lowered to the designed depth of the operation by relying on its gravity; ② When the machine cannot be lowered by its own weight, the power unit of the electric control dragging device is started, and the machine reaches the predetermined position with the help of electric control dragging; ③ When the electric control dragging cannot be lowered, it is judged that there is scaling causing resistance, and the distance measuring device is started to determine the thickness of the scale body. The optimal control parameters are determined according to the corresponding relationship between the stored scale body thickness and the control parameters of the alternating current for descaling. The magnetostrictive unit of the descaling device is powered according to the optimal control parameters to perform descaling work at the position of resistance. After it can pass, the system is lowered to the designed position according to the specific working conditions.

[0085] (3) After the system is lowered into place, stop the system and lift it up for recovery.

[0086] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of protection of the present disclosure. The attached method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0087] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that an embodiment of the claimed subject matter requires more features than those set forth in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0088] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments can be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to represent "non-exclusive or". The terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

Claims

1. An ultrasonic descaling intelligent control system, characterized in that: It includes a control panel, an electric-controlled dragging device, an ultrasonic-based descaling device and a distance-measuring device respectively electrically connected to the control panel; The descaling device comprises a magnetostrictive unit. In a working state, the magnetostrictive unit vibrates accordingly under the action of the alternating current passing therethrough, and the generated ultrasonic wave acts on the scale on the inner wall of the pipeline. The control panel is used to respond to the work instructions sent by the control terminal, and realize the crawling of the system in the pipeline by controlling the power unit of the electric-controlled traction device. If the crawling encounters resistance, it is also used to determine the thickness of the scale body according to the electrical signal sent by the distance measuring device, determine the optimal control parameter according to the stored correspondence between the thickness of the scale body and the control parameter of the descaling alternating current, and power the magnetostrictive unit of the descaling device according to the optimal control parameter to perform the descaling work.

2. The system according to claim 1, characterized in that The electric-controlled traction device further includes a transmission shaft connected to the power unit; A first clutch is provided on the transmission shaft, and the first clutch is connected to the bevel gear and the crawler wheel in sequence. When the first clutch is in a closed state, the power output by the power unit is transmitted to the crawler wheel through the transmission shaft and the bevel gear in sequence, so that the crawler wheel crawls along the inner wall of the pipeline, thereby realizing the crawling of the system.

3. The system according to claim 2, characterized in that The first clutch is connected with at least two sets of bevel gears and a creeper wheel.

4. The system according to claim 2, characterized in that The other end of the transmission shaft is connected to a screw rod, which is matched with a wedge block and an anchoring slip in sequence; A second clutch is also provided between the screw and the first clutch on the transmission shaft; When the first clutch is disconnected and the second clutch is closed, the power output by the power unit is transmitted to the screw through the transmission shaft, so that the wedge block moves, and then the anchoring slip is ejected, and the anchoring of the system is achieved through the contact between the anchoring slip and the inner wall of the pipeline; An elastic limiting structure is provided on the outer side of the anchoring slip, and when the wedge block is withdrawn, the elastic limiting structure is used to push the anchoring slip back.

5. The system according to claim 4, characterized in that A self-locking lifting angle is arranged between the screw rod and the wedge block, so that after the anchoring slip is pushed out into position and the power unit stops working, the anchoring slip is not pushed back.

6. The system according to claim 1, wherein: The magnetostrictive unit comprises a magnetostrictive rod and a coil wound around the periphery of the magnetostrictive rod; The front end of the magnetostrictive rod is connected to a first impact hammer. In a working state, the coil is powered according to the determined optimal control parameters, so that the magnetostrictive rod vibrates accordingly. The generated ultrasonic wave is amplified by the first impact hammer and acts on the scale on the inner wall of the pipeline.

7. The system according to claim 6, characterized in that A second impact hammer is also connected between the front end of the magnetostrictive rod and the first impact hammer, and the size of the second impact hammer is smaller than that of the first impact hammer.

8. The system according to claim 7, characterized in that A first matching pad is arranged between the front end of the magnetostrictive rod and the second impact hammer, and a second matching pad is arranged at the rear end of the magnetostrictive rod.

9. The system according to claim 6, characterized in that A wall-breaking hammer is also provided at the front end of the descaling device, and the wall-breaking hammer is connected to the front end of the descaling device through a variable amplitude rod.

10. The system according to any one of claims 1 to 9, characterized in that: The system also includes a main body; The control panel, the electric-controlled traction device and the descaling device are fixed on the main body in sequence from the back to the front.

11. An ultrasonic descaling intelligent control method, characterized in that: The method comprises descaling a target pipeline by using the ultrasonic descaling intelligent control system according to any one of claims 1 to 10, comprising the following steps: The control panel of the ultrasonic descaling intelligent control system responds to the working instructions sent by the control terminal and realizes the crawling of the system in the target pipeline by controlling the power unit of the electric-controlled traction device; If the crawling encounters resistance, it is determined that there is a scale body at the current position of the inner wall of the target pipeline, and the distance measuring device is notified to measure the distance. The thickness of the scale body is determined according to the electrical signal sent by the distance measuring device. The optimal control parameter is determined according to the corresponding relationship between the stored scale body thickness and the descaling alternating current control parameter, and the magnetostrictive unit of the descaling device is powered according to the optimal control parameter to perform the descaling work.

12. The method according to claim 11, characterized in that After the descaling work is performed, the method further includes: Notifying the distance measuring device to measure the distance, and judging whether the descaling effect meets the requirements according to the electrical signal sent by the distance measuring device; If yes, stop working and send a notification of descaling completion to the control terminal; If not, the scale thickness is determined according to the electrical signal, the optimal control parameter is determined according to the corresponding relationship between the scale thickness and the descaling alternating current control parameter, and the magnetostrictive unit of the descaling device is powered according to the optimal control parameter to continue the descaling work.

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