Pipeline electric signal acquisition device and electrode replacement method

Abstract

The invention discloses a pipeline electric signal acquisition device and an electrode replacement method, relates to the technical field of electric signal acquisition devices, and solves the problem of troublesome electrode replacement in the prior art. The device comprises an electrode fixing block arranged on a pipeline, and a replaceable electrode capable of being connected with the inner side and the outer side of the pipeline is arranged on the electrode fixing block; the replaceable electrode is a cylindrical electrode, and connecting structures capable of being matched with each other are arranged between the two ends of the replaceable electrode. The electrode fixing block is arranged on the pipeline, connection and fixation of the electrode are achieved, the replaceable electrode with the whole body being a cylinder is matched, the electrode can be installed and replaced from the outside, the electrode with the large inside and the small outside in the prior art is replaced, and the pipeline does not need to be disassembled in the installation and replacement process. According to the method, when the electrode is replaced, the old replaceable electrode is directly pushed into the pipeline through the new replaceable electrode, under-pressure non-stop replacement is achieved, operation is convenient and rapid, and the process is simple and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of electric signal acquisition devices, and in particular to a pipeline electric signal acquisition device and an electrode replacement method used in pipeline transportation scenarios. Background Art

[0002] Monitoring the state of the medium being transported in the pipeline has always been a difficult point in the field of pipeline transportation. By understanding the medium transportation state, the transportation parameters can be adjusted in time to avoid pipeline blockage. The electrical resistance tomography device can display the state of the medium in the pipeline by emitting and collecting electrical signals into the pipeline. The electrical signal acquisition unit is mainly composed of electrodes, steel pipes, wear-resistant linings, etc. There are two main requirements for this device. One is that the electrode must be in contact with the medium in the pipeline, and the other is that the electrode cannot be in contact with the external steel pipe. According to the above requirements, the current design is to evenly distribute holes around a section of the pipeline, set an insulating layer inside the pipeline, and install the electrodes from the inside of the pipeline to the outside. The problem with this design is that it is very troublesome to replace the electrodes.

[0003] For example, a pipeline mud electrical signal acquisition device with announcement number CN219179285U is shown. When the device is working, it is connected to the pipeline through a flange. When the electrode fails and needs to be replaced, the electrode cannot be directly pulled out because of its large volume inside the pipeline. It is necessary to empty the medium in the pipeline to achieve the purpose of reducing pressure, and then disconnect the flange and disassemble the pipeline for replacement. The whole process is very cumbersome and seriously affects the progress of work. For example, the electrode assembly and electromagnetic flowmeter disclosed in the Chinese utility model with announcement number CN204085588U, the electrode in this patent also needs to be taken out from the inside.

[0004] The electrodes of existing conventional collection devices are all large inside and small outside, and all need to be removed from the inside. The large inside and small outside design is conducive to resisting the medium pressure inside the pipeline and avoiding direct connection with the external pipeline, but it is not conducive to removal and replacement. Summary of the invention

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a pipeline electrical signal acquisition device and an electrode replacement method, which solves the problem of troublesome electrode replacement in the prior art.

[0006] The technical solution of the present invention is implemented as follows: a pipeline electrical signal acquisition device includes an electrode fixing block arranged on the pipeline, and the electrode fixing block is provided with a replaceable electrode that can connect the inside and outside of the pipeline; the replaceable electrode is a cylindrical electrode, and a connecting structure that can cooperate with each other is provided between the two ends of the replaceable electrode.

[0007] Preferably, an insulating lining is provided in the pipeline, electrode holes are correspondingly opened on the pipeline and the insulating lining, and the electrode fixing block is fixed on the electrode hole of the insulating lining.

[0008] Preferably, the connection structure comprises a male head and a female head provided at both ends of the replaceable electrode for easy connection with each other. The male head and the female head are plug-fitted.

[0009] Preferably, a threaded hole is provided on the electrode fixing block, and an outer wall of the replaceable electrode is provided with an external thread matching the threaded hole.

[0010] Preferably, the electrode fixing block is provided with a through hole, and the replaceable electrode is plugged into and matched with the through hole.

[0011] Preferably, the replaceable electrode is threadedly connected with a nut, and an insulating sealing gasket is provided between the nut and the pipeline.

[0012] Preferably, the inner end surface of the replaceable electrode is flush with the inner wall of the insulating lining. The outer end of the replaceable electrode is connected to the signal line.

[0013] A method for replacing electrodes of a pipeline electrical signal acquisition device. When replacing a replaceable electrode, a new replaceable electrode is connected to the replaceable electrode to be replaced via a connecting structure, and the replaceable electrode to be replaced is pushed into the interior of the pipeline by the new replaceable electrode, so as to realize replacement under pressure without stopping the machine.

[0014] Beneficial effects of the present invention: The present invention achieves connection and fixation of the electrode by setting an electrode fixing block on the pipeline, and cooperates with the replaceable electrode which is a cylinder, so that the electrode can be installed and replaced from the outside, replacing the electrode in the prior art which is large inside and small outside, and the pipeline does not need to be disassembled during the installation and replacement process. By setting a connection structure which can be easily connected on the replaceable electrode, it is convenient to connect with a new replaceable electrode when the replaceable electrode needs to be replaced, so as to achieve quick replacement.

[0015] The method uses a new replaceable electrode to directly push the old replaceable electrode into the interior of the pipeline during electrode replacement, thereby achieving replacement under pressure without stopping the machine, and the operation is convenient and rapid, and the process is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0017] Figure 1 It is a schematic cross-sectional view of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the pipeline cross-section structure of the present invention; Figure 3It is a schematic diagram of the cross-sectional structure of the present invention when the nut is installed; Figure 4 is a schematic diagram of the first electrode structure of the present invention; Figure 5 This is a schematic diagram of the replacement electrode structure of the present invention; In the figure: 1: pipe, 2: electrode fixing block, 3: insulating lining, 4: male connector, 5: female connector, 6: nut, 7: first electrode, 8: replacement electrode. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 , 2 As shown, embodiment 1, a pipeline electrical signal acquisition device, includes an electrode fixing block 2 arranged on a pipeline 1, and a replaceable electrode capable of connecting the inside and outside of the pipeline 1 is provided on the electrode fixing block 2, and the connection and fixation of the replaceable electrode is achieved by setting the electrode fixing block. The replaceable electrode is a cylindrical electrode, and the electrode fixing block is used in conjunction with the replaceable electrode which is a cylinder throughout, so that the replaceable electrode can be installed and replaced from the outside, replacing the electrode in the prior art which is large inside and small outside, and the installation and replacement process does not require disassembly of the pipeline. A connecting structure capable of cooperating with each other is provided between the two ends of the replaceable electrode. The connection structure is provided to facilitate the connection with a new replaceable electrode when the replaceable electrode needs to be replaced, so as to achieve quick replacement.

[0020] Specifically in this embodiment, the pipeline 1 can be selected as a conventional steel pipe section, and both ends are connected to other pipe sections in a conventional medium conveying pipeline through flanges. The pipeline 1 is provided with an insulating liner 3, and the insulating liner 3 is attached to the inner wall of the pipeline 1. Electrode holes are correspondingly opened on the pipeline 1 and the insulating liner 3, and the electrode fixing block 2 is fixed on the electrode hole of the insulating liner 3. The method of providing an insulating liner in the pipeline and fixing the electrode block by embedding the insulating liner can solve the problems of electrode contact, electrode fixing and replacement.

[0021] In actual use, in order to collect electrical signals from the pipeline, several electrode holes are opened along the axis of the pipeline according to actual needs, and electrode holes are also opened on the insulating lining at the positions of the corresponding electrode holes. Finally, a corresponding number of electrode fixing blocks are embedded and fixed in the electrode holes on the insulating lining. When setting the electrode fixing blocks, avoid contact between the electrode fixing blocks and the pipeline, so as to achieve the purpose of insulating the replaceable electrodes subsequently installed on the electrode fixing blocks from the pipeline. In addition, the electrode fixing blocks can also be insulated by the insulating lining, so as to achieve the purpose of insulation between several replaceable electrodes set on the pipeline.

[0022] In addition, the outer ends of the replaceable electrodes on the electrode fixing block are respectively connected to signal lines, and are connected to a conventional electrical signal acquisition and control box through the signal lines. The electrical signal acquisition and control box can optionally use the same model of electrical signal acquisition and control box in the patent with announcement number CN219179285U to collect and process signals.

[0023] This embodiment can fully meet the insulation treatment between replaceable electrodes and pipelines, between replaceable electrodes, replacement and fixation of replaceable electrodes, and can also meet the sealing and replacement problems of electrodes when the pipeline is under pressure. The design in this embodiment can simply and quickly replace the electrodes, greatly saving time and labor costs.

[0024] Embodiment 2, a pipeline electrical signal acquisition device, based on embodiment 1, the connection structure includes a male head 4 and a female head 5 provided at both ends of the replaceable electrode for easy connection with each other, and different replaceable electrodes can be connected through the male head 4 and the female head 5. In this embodiment, the male head 4 and the female head 5 are plug-fitted.

[0025] Specifically, the male head can be optionally in the form of a hexagonal prism set at the end of the replaceable electrode, and the female head can be in the form of a hexagonal countersunk hole corresponding to the male head set at the end of the replaceable electrode. When the electrode needs to be replaced, the female or male head at the end of the new replaceable electrode is plugged into the male or female head of the replaceable electrode to be replaced to achieve alignment between the two electrodes, and then the new replaceable electrode is used to drive the replaceable electrode to be replaced to move into the inside of the pipeline, so that replacement can be achieved without disassembling the pipeline.

[0026] Embodiment 3, a pipeline electrical signal acquisition device, based on embodiment 2, a threaded hole is provided on the electrode fixing block 2, and an external thread matching the threaded hole is provided on the outer wall of the replaceable electrode. In this embodiment, in order to realize the detachable connection between the electrode fixing seat and the replaceable electrode, the external thread of the outer wall of the replaceable electrode is threadedly matched with the threaded hole on the electrode fixing block, and the cylindrical shape of the replaceable electrode is matched, so that the replaceable electrode can move axially along the threaded hole when rotating.

[0027] In the present embodiment, the replaceable electrode is installed in a replaceable electrode installation manner with the male head facing inward. When replacing the electrode, under the action of the connecting structure, the male head at the front end of the new replaceable electrode is inserted into the female head at the rear end of the replaceable electrode to be replaced, and the two are matched and aligned. The new replaceable electrode is rotated, and under the action of the connecting structure, the two replaceable electrodes rotate synchronously. With the cooperation of the external thread and the threaded hole, the two replaceable electrodes move forward synchronously, so that the replaceable electrode to be replaced at the front end is pushed into the inner side of the insulating lining and separated from the electrode fixing block.

[0028] Embodiment 4, a pipeline electrical signal acquisition device, based on embodiment 2, is different from embodiment 3 in that a through hole is provided on the electrode fixing block 2, and the replaceable electrode is plugged into the through hole. In this embodiment, the replaceable electrode and the through hole are interference fit, and when used for the first time, after the replaceable electrode is inserted into the through hole, the interference fit between the two is sealed. When replacement is required, a new replaceable electrode is connected to the replaceable electrode to be replaced through a connecting structure, and the old replaceable electrode to be replaced is pushed into the inner side of the insulating lining along the axis by the rear new replaceable electrode, and separated from the electrode fixing block.

[0029] Embodiment 5, a pipeline electrical signal acquisition device, based on embodiment 3 or 4, as Figure 3 As shown, the length of the replaceable electrode is increased, and a nut 6 is provided at the threaded connection of the outer end of the replaceable electrode, and an insulating sealing gasket is provided between the nut 6 and the pipeline 1. In the case of high pressure inside some pipelines, since the connection between the replaceable electrode and the electrode fixing block cannot be effectively sealed, an insulating sealing gasket and a nut are added for sealing. In this embodiment, the insulating sealing gasket is a rubber gasket. The insulating sealing gasket made of rubber material is deformed under the extrusion of the nut to achieve a close fit, thereby strengthening the seal between the replaceable electrode and the pipeline.

[0030] In addition, in this embodiment, the inner end surface of the replaceable electrode is flush with the inner wall of the insulating liner 3 to avoid affecting the flow path of the internal medium. As a further optional embodiment, the outer end surface of the replaceable electrode exceeds the outer wall of the pipeline 1, and the nut is connected to the outer end of the replaceable electrode. The signal line can be optionally wound around the outer end of the replaceable electrode in a winding manner, or can be optionally pressed on the replaceable electrode through the nut.

[0031] Embodiment 6, the electrode replacement method of the pipeline electrical signal acquisition device in the above embodiment, when replacing the replaceable electrode, the new replaceable electrode is connected to the replaceable electrode to be replaced through a connecting structure, and the replaceable electrode to be replaced is pushed into the interior of the pipeline 1 by the new replaceable electrode, so as to realize replacement under pressure without stopping the machine.

[0032] As a further optional implementation, in this embodiment, if Figure 4 ,5 As shown, the replaceable electrode includes an initially installed first electrode 7 and a replacement electrode 8, and external threads are provided on the first electrode and the replacement electrode to be connected with the threaded hole of the electrode fixing block. No male head is provided at the front end of the first electrode. After installation, the front end is flush with the inner wall of the insulating lining 3. The replacement electrode adopts a form in which a male head and a female head are provided at both ends, which is convenient for replacement and improves the durability of the first electrode.

[0033] When the first electrode cannot be used, disconnect the signal line from the electrode, connect the replacement electrode to the female head of the first electrode through the male head, rotate the second electrode to drive the first electrode to rotate at the same time, and continuously screw the first electrode into the electrode hole. When the first electrode is detached from the electrode fixing block, the first electrode falls into the pipeline. As the material is transported out, the replacement electrode is connected to the electrode fixing block through a thread, thereby replacing the first electrode. At this time, just connect the signal line to the outside of the replacement electrode. The subsequent replacement method is the same as the replacement method of the first electrode. Compared with the prior art, the method of inlaying the fixed electrode block with an insulating lining adopted in this scheme can solve the problems of electrode contact, electrode fixing and replacement, and fully considers the insulation treatment between the electrode and the pipeline, the electrode and the electrode, and the replacement and fixing of the electrode, and realizes the sealing and replacement of the electrode when the pipeline is under pressure. This design can easily and quickly replace the electrode, greatly saving time and labor costs.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline electrical signal acquisition device, characterized in that: It comprises an electrode fixing block (2) arranged on a pipeline (1), on which a replaceable electrode capable of connecting the inside and outside of the pipeline (1) is provided; the replaceable electrode is a cylindrical electrode, and a connecting structure capable of cooperating with each other is provided between the two ends of the replaceable electrode.

2. The pipeline electrical signal acquisition device according to claim 1, characterized in that: An insulating lining (3) is provided in the pipeline (1), electrode holes are correspondingly provided on the pipeline (1) and the insulating lining (3), and the electrode fixing block (2) is fixed on the electrode hole of the insulating lining (3).

3. The pipeline electrical signal acquisition device according to claim 2, characterized in that: The connection structure comprises a male head (4) and a female head (5) which are arranged at both ends of the replaceable electrode and are convenient for mutual connection.

4. The pipeline electrical signal acquisition device according to claim 3, characterized in that: The male connector (4) and the female connector (5) are plug-fitted to each other.

5. The pipeline electrical signal acquisition device according to claim 4, characterized in that: The electrode fixing block (2) is provided with a threaded hole, and the outer wall of the replaceable electrode is provided with an external thread matching the threaded hole.

6. The pipeline electrical signal acquisition device according to claim 4, characterized in that: The electrode fixing block (2) is provided with a through hole, and the replaceable electrode is plugged into and matched with the through hole.

7. The pipeline electrical signal acquisition device according to claim 5 or 6, characterized in that: The replaceable electrode is threadedly connected with a nut (6), and an insulating sealing gasket is provided between the nut (6) and the pipeline (1).

8. The pipeline electrical signal acquisition device according to claim 7, characterized in that: The inner end surface of the replaceable electrode is flush with the inner wall of the insulating lining (3).

9. The pipeline electrical signal acquisition device according to claim 8, characterized in that: The outer end of the replaceable electrode is connected to the signal line.

10. A method for replacing electrodes of a pipeline electrical signal acquisition device according to any one of claims 1 to 9, characterized in that: When replacing the replaceable electrode, the new replaceable electrode is connected to the replaceable electrode to be replaced via a connecting structure, and the replaceable electrode to be replaced is pushed into the interior of the pipeline (1) by the new replaceable electrode, thereby achieving replacement under pressure without stopping the machine.

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