Insulating ring for measuring boundary voltage of pipeline
By using a combination design of insulating ring and electrode plates in the ERT monitoring equipment, the problem of electrode plates easily falling off in complex environments is solved, achieving stable, corrosion-resistant, and pressure-resistant ERT monitoring results, reducing costs and improving monitoring efficiency.
Patent Information
- Application Number
- CN202520209883.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-10
AI Technical Summary
In existing ERT monitoring equipment, the electrode plates are prone to wear and detachment in high-pressure, low-temperature, and highly corrosive environments, which cannot meet the monitoring needs of complex environments such as the seabed.
Design a ring made of insulating material with electrode slots and threaded holes on the inner wall. Fix it to the inner wall of the pipe by adjusting the rod. The electrode sheet is embedded in the slot to form a stable assembly, which improves the impact resistance and insulation of the electrode sheet.
The problem of electrode detachment has been solved, the corrosion resistance and pressure resistance of the electrode have been improved, the application requirements of ERT monitoring in complex environments have been met, production costs have been reduced and monitoring efficiency has been improved.
Smart Images
Figure CN223897501U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ERT monitoring equipment technology, and in particular to an insulating ring for measuring pipeline boundary voltage. Background Technology
[0002] Electrical Resistance Tomography (ERT) is a visualization imaging technique that works by acquiring voltage signals around the object being measured and then using image reconstruction algorithms to deduce the resistivity distribution of the object, thus visually presenting the distribution of the relevant medium. It is suitable for two-phase and multiphase fluids where the continuous phase is conductive, and has advantages such as low cost, visualization, non-invasiveness, fast response, and high real-time performance, making it a promising technology with broad application prospects.
[0003] In practical applications, most pipeline sensors currently used for ERT monitoring have their electrode plates directly installed on the inner wall of the pipeline. Since some pipelines are made of metal and do not have the necessary inner wall insulation, they cannot meet the requirements for ERT monitoring. Although some pipelines (such as non-metallic pipelines) can meet the requirements for ERT monitoring, in certain environments, especially in high-pressure, low-temperature, and highly corrosive environments such as the seabed, the electrode plates are worn too much due to various frictions, cutting, erosion, and scouring, making them prone to falling off. Therefore, they cannot meet the requirements for actual field applications. Utility Model Content
[0004] In view of this, and to solve the problem of electrode plates easily falling off during pipeline ERT monitoring, this utility model provides an insulating ring for measuring pipeline boundary voltage.
[0005] An embodiment of this utility model provides an insulating ring for measuring the boundary voltage of a pipeline, comprising:
[0006] The ring body is made of insulating material. The inner wall of the ring body is provided with multiple electrode slots, and each electrode slot is arranged circumferentially around the ring body. The side wall of the ring body is provided with multiple through threaded holes.
[0007] Multiple adjusting rods, each of which passes through the threaded hole and is threadedly connected to the threaded hole, with the outer end of the adjusting rod used to abut against the inner wall of the pipe to be tested;
[0008] And multiple electrode plates, each of which is embedded in an electrode slot.
[0009] Furthermore, the inner wall of the ring is provided with a plurality of protrusions, and an electrode slot is formed between two adjacent protrusions.
[0010] Furthermore, the convex strip is T-shaped, and the electrode slot is T-shaped.
[0011] Furthermore, each of the aforementioned protrusions is arranged at equal intervals around the circumference of the ring body.
[0012] Furthermore, the threaded hole is provided on the protrusion.
[0013] Furthermore, the number of adjusting rods is set to two, and the two adjusting rods are arranged on one diameter of the ring body.
[0014] Furthermore, each of the adjusting rods is arranged at equal intervals around the circumference of the ring body.
[0015] Furthermore, the adjusting rod is a screw.
[0016] Furthermore, the insulating material is acrylic.
[0017] Furthermore, the outer diameter of the ring is smaller than the inner diameter of the pipe to be tested.
[0018] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows:
[0019] This invention discloses an insulating ring for measuring the boundary voltage of a pipeline. The ring can be placed inside the pipeline under test. The ring body is pressed against the inner wall of the pipeline via an adjusting rod, ensuring stable fixation. The ring body is made of insulating material, and electrode slots are provided on the inner wall of the ring body. Electrode plates can be stably embedded in these slots, connecting the electrode plates and the ring body to form a combined unit. This improves the electrode plates' resistance to impact loads and solves the problem of poor adhesion and easy detachment of measuring electrodes from the pipeline wall in traditional methods. It has advantages such as good insulation, corrosion resistance, and pressure resistance, meeting the requirements of practical multiphase flow pipeline ERT monitoring applications. This invention is of great significance for reducing the production cost of practical ERT monitoring technology and improving monitoring efficiency. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the working state of an insulating ring used for measuring the boundary voltage of a pipeline according to this utility model;
[0021] Figure 2 This is a schematic diagram of an insulating ring for measuring the boundary voltage of a pipeline according to the present invention;
[0022] Figure 3 This is a schematic diagram of a visual monitoring system for CO2 hydrates inside a high-pressure autoclave.
[0023] In the diagram: 1. Ring body; 2. Adjusting rod; 3. Electrode slot; 4. Raised strip; 100. Test pipe; 101. Water tank; 102. Deionized water source; 103. Vacuum pump; 104. Water bath circulation system; 105. Mixed gas tank; 106. CO2 gas tank; 107. First flow meter; 108. Data acquisition device; 109. Recovery tank; 110. Second flow meter; 111. Gas chromatograph; 112. Computer. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.
[0025] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.
[0028] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Please refer to Figure 1 and Figure 2 An embodiment of this utility model provides an insulating ring for measuring the boundary voltage of a pipeline, which mainly includes a ring body 1, multiple adjusting rods 2 and multiple electrode plates.
[0030] The ring 1 is generally cylindrical, with an outer diameter smaller than the inner diameter of the pipe 100 to be tested, and can be placed inside the pipe 100. The ring 1 is made of insulating material; in this embodiment, the ring 1 is made of acrylic material, which has good insulation properties. The use of insulating material in the ring 1 overcomes the limitations of metal pipe materials on the application of ERT technology.
[0031] The inner wall of the ring body 1 is provided with a plurality of electrode slots 3, and each electrode slot 3 is arranged circumferentially around the ring body 1. Generally, each electrode slot 3 is arranged at equal intervals circumferentially around the ring body 1.
[0032] Each electrode sheet is embedded in one electrode slot 3. The number of electrode sheets can be flexibly set according to actual testing needs. The number of electrode slots 3 can be set to a large number, and some of the electrode slots 3 can be selected for installation.
[0033] In some embodiments, the inner wall of the ring body 1 is provided with a plurality of protrusions 4, and an electrode slot 3 is formed between two adjacent protrusions 4. The protrusions 4 are arranged at equal intervals around the ring body 1 in a circumferential direction, so as to form the electrode slots 3 that are evenly spaced.
[0034] In some embodiments, the protrusion 4 is T-shaped, and the electrode slot 3 is U-shaped. The electrode sheet is adapted to the shape of the electrode slot 3, so that the electrode sheet can be firmly embedded in the electrode slot 3.
[0035] The sidewall of the ring body 1 is provided with multiple through-holes, which are arranged radially along the ring body 1. Each adjusting rod 2 passes through the threaded hole and is threadedly connected to it. The adjusting rod 2 is generally a screw, preferably a bolt. The outer end of the adjusting rod 2 is used to abut against the inner wall of the pipe 100 to be tested. Multiple adjusting rods 2 abut against the inner wall of the pipe 100 to be tested, thereby stably fixing the ring body 1 inside the pipe 100 to be tested.
[0036] The number of adjusting rods 2 can be flexibly set according to the specifications of the pipe 100 to be tested. For example, in this embodiment, the number of adjusting rods 2 is set to two, and the two adjusting rods 2 are set on one diameter of the ring body 1. The outer ends of the two adjusting rods 2 both extend outward, thereby abutting against the inner wall of the pipe 100 to be tested. When the number of adjusting rods 2 is set to three or more, each adjusting rod 2 is arranged at equal intervals around the ring body 1 in a circumferential direction.
[0037] In some embodiments, the threaded hole is provided on the protrusion 4. The ring 1 at the protrusion 4 is thicker to prevent the threaded hole from reducing the strength of the ring 1 and to ensure the ring 1's ability to resist impact loads.
[0038] Please refer to Figure 3 This invention discloses an insulating ring for measuring the boundary voltage of a pipeline, which can be applied to a visual monitoring system for CO2 hydrate inside a high-pressure reactor. Specifically, the system includes a deionized water source 102, a water bath circulation system 104, a vacuum pump 103, a mixing tank 105, a CO2 tank 106, a first flow meter 107, a water tank 101, a high-pressure reactor, a recovery tank 109, a data acquisition device 108, a second flow meter 110, a gas chromatograph 111, and a computer 112. The high-pressure reactor, serving as the pipeline to be measured, is placed inside the water tank 101. The deionized water source 102 is connected to the high-pressure reactor via a pipeline. The first flow meter 107, the mixing tank 105, and the CO2 tank 106 are located between the deionized water source 102 and the high-pressure reactor. The vacuum pump 103 is connected to the deionized water source 102. A water bath circulation system 104 and a gas chromatograph 111 are connected to the water tank 101. A second flow meter 110 is provided between the gas chromatograph 111 and the water tank 101. A recovery tank 109 is connected to the recovery tank 109. A data acquisition device 108 and the gas chromatograph 111 are connected to the computer 112.
[0039] Select the required number of electrode plates and install each electrode plate into an electrode slot 3. Connect each electrode plate to an AC power supply and a data acquisition device 108 via enameled wire.
[0040] Twist each of the adjusting rods 2 so that the outer end of each adjusting rod 2 protrudes relative to the outer wall of the ring body 1, with the outer end of each adjusting rod 2 located on a circumference with the same diameter as the inner diameter of the autoclave's inner wall. Place the ring body 1 inside the autoclave and push the ring body 1 to a predetermined position inside the autoclave.
[0041] The temperature sensor inside the high-pressure reactor measures its internal temperature and transmits the temperature signal to the computer 112. The water bath circulation system includes a circulation pump and a thermostat. After the vacuum pump pumps deionized water into the water tank 101, the circulation pump allows the liquid injected into the water tank 101 to flow out from the outlet of the water tank. The thermostat can heat or cool the liquid as needed. Finally, the treated liquid is pumped back into the water tank through the inlet. In this way, the water bath circulation system can control the temperature distribution of the liquid injected into the water tank 101 to be uniform and stable, thereby achieving control of the hydrate formation temperature conditions.
[0042] The pressure sensor inside the high-pressure reactor measures the internal pressure and transmits the pressure signal to the computer 112. When the pressure inside the reactor is insufficient, the flow rate of liquid pumped into the water tank 101 is reduced to be greater than the flow rate of liquid discharged, thereby compressing the liquid in the high-pressure reactor and increasing the pressure. When the pressure is too high, the flow rate of liquid pumped into the water tank 101 is increased to be less than the flow rate of liquid discharged, thereby reducing the pressure inside the high-pressure reactor. In this way, after multiple adjustments, the pressure inside the high-pressure reactor can be stabilized, thus achieving control over the pressure conditions for hydrate formation.
[0043] After the temperature and pressure conditions are set, the valves of the mixing tank 105 and the CO2 tank 106 are opened. The mixing tank 105 introduces a mixture of CO2 and H2 gas into the high-pressure reactor 106, and the CO2 tank introduces CO2 gas into the high-pressure reactor, thus generating hydrates. The first flow meter 107 is used to measure the flow rate of deionized water, and the second flow meter 110 is used to measure the flow rate of the mixed gas.
[0044] The high-pressure reactor simulates an environment at a depth of 2000m on the seabed. The mixing of water and CO2 hydrates simulates a multiphase flow mixing environment. An AC power supply can establish a sensitive field inside the high-pressure reactor, and the adjacent excitation mode is selected to measure the adjacent response voltage. The data acquisition device 108 can collect the measured boundary voltage data, and the inversion algorithm module obtains the resistivity distribution of each layer inside the reactor, thereby realizing the inversion of each layer inside the reactor. Combined with image reconstruction methods, the visualization of CO2 hydrate monitoring can be well realized.
[0045] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.
[0046] Where there is no conflict, the embodiments and features described above can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An insulating ring for measuring the boundary voltage of a pipe, characterized in that, include: The ring body is made of insulating material. The inner wall of the ring body is provided with multiple electrode slots, and each electrode slot is arranged circumferentially around the ring body. The side wall of the ring body is provided with multiple through threaded holes. Multiple adjusting rods, each of which passes through the threaded hole and is threadedly connected to the threaded hole, with the outer end of the adjusting rod used to abut against the inner wall of the pipe to be tested; And multiple electrode plates, each of which is embedded in an electrode slot.
2. An insulating ring for measuring pipeline boundary voltage as described in claim 1, characterized in that: The inner wall of the ring is provided with multiple protrusions, and an electrode slot is formed between two adjacent protrusions.
3. An insulating ring for measuring pipeline boundary voltage as described in claim 2, characterized in that: The protrusion is T-shaped, and the electrode slot is T-shaped.
4. An insulating ring for measuring pipe boundary voltage as described in claim 2 or 3, characterized in that: Each of the aforementioned protruding strips is arranged at equal intervals around the circumference of the ring body.
5. An insulating ring for measuring pipeline boundary voltage as described in claim 2, characterized in that: The threaded hole is provided on the protrusion.
6. An insulating ring for measuring pipe boundary voltage as described in claim 1, characterized in that: The number of adjusting rods is set to two, and the two adjusting rods are set on one diameter of the ring body.
7. An insulating ring for measuring pipe boundary voltage as described in claim 1, characterized in that: Each of the aforementioned adjusting rods is arranged at equal intervals around the circumference of the ring body.
8. An insulating ring for measuring pipe boundary voltage as described in claim 1, characterized in that: The adjusting rod is a screw.
9. An insulating ring for measuring pipe boundary voltage as described in claim 1, characterized in that: The insulating material is acrylic.
10. An insulating ring for measuring pipe boundary voltage as described in claim 1, characterized in that: The outer diameter of the ring is smaller than the inner diameter of the pipe to be tested.