Eddy current suppression device

Abstract

A vortex suppression device (10) for a fluid flowing along a passage (A-E), comprising: an elongated body, an outer surface of which has an elongated front section and an elongated rear section along the length of the elongated body relative to the direction of fluid flow (A-E) when the device is located in the passage, the elongated body having at least one channel (24a-24d, 26a, 26b) extending from the elongated front section to the elongated rear section of the elongated body, the channel (24a-24d, 26a, 26b) being configured such that, in use, when the device is located in the passage, the channel (24a-24d, 26a, 26b) allows the fluid to flow (J) towards the rear section to prevent the formation of a vortex (D).

Description

Technical Field

[0001] The invention relates to an eddy current suppression device.

[0002] The invention particularly, but not exclusively, relates to an apparatus for insertion into a pipeline comprising vortex suppression means. Background Art

[0003] In certain industries, such as the oil and gas industry, instruments are required to be periodically inserted into a fluid, such as a flow process line, to perform a variety of different tasks, some of which include: sampling; injection; measurement; and corrosion monitoring.

[0004] Instruments for insertion into the pipeline may include: a sample probe; an inline injector; a corrosion coupon or any other sensor for determining a property of the fluid.

[0005] While each of these tasks involves instruments with specific purposes, the overall intent is to perform product quality control and control / monitor the integrity of the pipeline. The results of the analysis provide the pipeline operator with the information needed to meet product specifications.

[0006] In order to correctly perform any of the above tasks, it is important that the instrument is inserted into the processing line during the production process. However, it is not desirable for the inserted instrument to interfere with the production process (eg, the flow of fluid in the line).

[0007] Inserting an instrument into a process line during a production process involves inserting the instrument into the line while the product is flowing in the line.

[0008] Instruments for insertion into pipelines are typically cylindrical in shape. These instruments are typically inserted into a fixed position so that the fluid flow moves transversely to the longitudinal axis of the instrument.

[0009] When cylinder is introduced into the fluid flow that moves transverse to the longitudinal axis of this cylinder, fluid slows down because of the outer surface of impact cylinder.The elongated segment of the outer surface of the cylinder that makes fluid first impact the outer surface of cylinder is also referred to as the " front section " (or " leading edge ") of cylinder. Fluid separates at the front section and moves in opposite directions around cylinder. Fluid is accelerated as it moves around cylinder until it reaches maximum speed zone. Across this point, fluid slows down to the second low-speed zone as it moves around cylinder, and fluid rejoins and / or leaves the outer surface of cylinder here. The elongated segment on the outer surface of cylinder that makes fluid rejoin and / or leave cylinder is also referred to as the " rear section " (or " trailing edge ") of cylinder.

[0010] The change in fluid velocity around the cylinder creates a pressure gradient around the cylinder according to Bernoulli's principle. The pressure gradient around the cylinder is determined by the flow regime in which the hydraulic system operates. Under certain flow regimes, the static pressure around the cylinder can be high enough to create an adverse pressure gradient, i.e., acting against the direction of flow. This adverse pressure gradient causes the fluid to circulate, causing the boundary layer flow to separate from the cylinder. The separated fluid can form vortices that shed asymmetrically following the cylinder (i.e., alternating vortices).

[0011] The Reynolds number (Re) is a dimensionless parameter that can be used to classify the flow regime of fluid flow operations. The Reynolds number can be thought of as the ratio of viscous forces to inertial forces. For low Reynolds numbers (Re < 10), the flow regime around the cylinder can be considered laminar, meaning that viscous forces dominate and a boundary layer of low-speed fluid surrounds the cylinder. For Reynolds numbers of Re = ~10, inertial forces dominate and the boundary layer around the cylinder begins to separate and form vortices following the cylinder. As the Reynolds number increases (Re > ~90), the flow pattern around the body becomes asymmetric and the low-pressure area moves across the surface of the cylinder, resulting in alternating vortex shedding, also known as Karman vortex street. The vortex continues to shed until it reaches a point around Re ~ 10. 5 until it reaches a fully turbulent state.

[0012] The alternating shedding of eddies creates oscillatory forces, also known as vortex-induced vibrations (VIV). The amplitude and frequency of VIV can cause damage to inserted instruments, which can also affect downstream equipment and / or the pipeline itself. This is particularly severe when the frequency of the vibrations matches the resonant frequency of the inserted instrument.

[0013] The present invention seeks to address the problems associated with vortex induced vibrations, or at least provide consumers with a beneficial alternative. Summary of the Invention

[0014] In general, in a first aspect, a vortex suppression device for a fluid flowing along a passage is disclosed, comprising: a slender body, an outer surface of which has a slender front section and a slender rear section along the length of the slender body relative to the direction of fluid flow when the device is located in the passage, the slender body having at least one channel extending from the front section to the rear section of the slender body, the channel being constructed so that in use, when the device is located in the passage, the channel allows the fluid to flow toward the rear section to prevent the formation of vortices.

[0015] In particular, in a first aspect, a vortex suppression device for a fluid flowing along a passage is disclosed, comprising: an elongated body, an outer surface of which has an elongated front section and an elongated rear section along the length of the elongated body relative to the direction of fluid flow when the device is located in the passage, the elongated body having at least one channel extending transversely to the longitudinal axis of the elongated body from the front section to the rear section of the elongated body, the channel being constructed so that in use, when the device is located in the passage, the channel allows the fluid to flow toward the rear section to prevent the formation of a vortex.

[0016] The passage directs the high-speed fluid flow from upstream of the elongated body substantially to downstream of the elongated body to reduce the static pressure downstream of the elongated body. Reducing the static pressure helps prevent the formation of adverse pressure gradients. This reduces the amount of boundary layer flow separation, which in turn prevents the formation of vortices.

[0017] In some embodiments, the elongated body has a circular or oval cross-section.

[0018] In some embodiments, the elongated body may also have a polygonal cross-section.

[0019] In some embodiments, the outer surface is dimpled or corrugated. These dimples or corrugations serve to increase turbulence in the boundary layer, thereby helping to prevent boundary layer flow separation.

[0020] In some embodiments, the at least one channel comprises a groove in the outer surface of the elongated body.

[0021] In some embodiments, the slot follows a sinusoidal path around the elongated body.

[0022] In some embodiments, the groove follows a circumferential or helical path around the elongated body.

[0023] In some embodiments, the elongated body includes a plurality of grooves, each of which follows a sinusoidal path, a circular path, or a spiral path. The grooves can share a common path shape to follow different paths. For example, the elongated body may have three grooves, two of which follow a circular path and one of which follows a sinusoidal path.

[0024] In some embodiments, at least one channel extends through the elongated body.

[0025] In these embodiments, at least one channel may comprise a rectangular cross-section having a width and a height, the width extending parallel to the longitudinal axis of the elongated body. The height of each channel may be greater than 1 mm. Suitably, the height of each channel may be between 2 mm and 4 mm. More suitably, the height of each channel may be 3 mm.

[0026] In some embodiments, the channel deviates from the centerline of the cross-section of the elongated body. The channel deviates by a distance greater than 4.5 mm. Suitably, the channel deviates by a distance between 4.5 mm and 12 mm. More suitably, the channel deviates by a distance of 6.5 mm or 9.5 mm.

[0027] In some embodiments, the vortex suppression device has at least one opening in the outer surface of the elongated body.The at least one channel may intersect the at least one opening.

[0028] In some embodiments, the vortex suppression device has at least two opposing openings in the outer surface of the elongated body.The elongated body may include at least two channels, wherein each of the two channels intersects an opening in the outer surface of the elongated body.

[0029] In some embodiments, the elongated body includes at least four channels, wherein two channels each intersect an opening in the outer surface of the elongated body.

[0030] In some embodiments, each opening comprises a rectangular cross-section having a width and a height, the width extending parallel to the longitudinal axis of the elongated body. The height of each opening can be greater than 1 mm. Suitably, the height of each opening can be between 2 mm and 4 mm. More suitably, the height of each opening can be 3 mm.

[0031] In some embodiments, the elongated body is a sample probe having a first end, a second end, and an internal passage extending between the first end and the second end for collecting a fluid sample.

[0032] In some embodiments, the sample probe includes a threaded connection at the second end for connecting the sample probe to an auxiliary piece of equipment.

[0033] In some embodiments, the sample probe includes a flow regulating structure at the first end for regulating fluid flow into or out of the internal passageway.

[0034] In some embodiments, the flow regulating structure is a valve and / or a filter.

[0035] In some embodiments of the vortex suppression device, the elongated body may include any one or a combination of the following components:

[0036] a) sample probe;

[0037] b) injection nozzles for diffusing fluids;

[0038] c) measuring devices for determining properties of fluids; or

[0039] d) Corrosion coupons used to monitor pipeline corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Although any other forms may fall within the scope of the apparatus set forth in this summary, specific embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0041] Figure 1 is a front view of an eddy current suppression device according to a first embodiment of the present invention;

[0042] Figure 2 yes Figure 1 AA cross-sectional view of the eddy current suppression device;

[0043] Figure 3 yes Figure 1 An end view of an eddy current suppression device;

[0044] Figure 4 are the velocity plot results for a computational flow simulation of the flow around a cylinder;

[0045] Figure 5 It is aimed at Figure 1 Velocity plotting results of computational flow simulation of the flow around the vortex suppression device;

[0046] Figure 6 is a perspective view of an eddy current suppression device according to a second embodiment of the present invention;

[0047] Figure 7 yes Figure 6 A cross-sectional view of the vortex suppression device shown taken along a plane on the longitudinal axis;

[0048] Figure 8 is a perspective view of an eddy current suppression device according to a third embodiment of the present invention;

[0049] Figures 9A-9D yes Figure 8 A plan view of the eddy current suppression device made at 90 degree increments around the longitudinal axis of the device, wherein: Figure 9A is the first plane (0 degrees); Figure 9B It is the second plane (90 degrees); Figure 9C It is the third plane (180 degrees); Figure 9D is the fourth plane (270 degrees); and

[0050] Figure 10 It is along Figure 9D A cross-sectional view taken along line AA in FIG. DETAILED DESCRIPTION

[0051] The accompanying drawings show three embodiments of the eddy current suppression device of the present invention. It should be noted that these are not the only embodiments.

[0052] First reference Figure 1-3 , shows a first embodiment of a vortex suppression device in the form of a sample probe 10, which includes a cylindrical elongated body 12 having an outer surface defining a longitudinal axis 14. The elongated body 12 has a first end 16, a second end 18, and an internal sampling passage 20 (e.g., a probe 10) extending between the first end 16 and the second end 18 for collecting a fluid sample. Figure 2 The second end 18 has an external threaded connection for connecting the sample probe to an auxiliary part of the device. The first end 16 has a hole 22 for receiving the fluid flowing into the sampling passage 20 (as shown). Figure 3 shown).

[0053] Can be Figure 2 As seen in FIG, the elongate body 12 includes passages 24a, 24b, 24c, 24d extending therethrough transverse to the longitudinal axis 14 of the elongate body 12.

[0054] When the sample probe 10 is positioned in the fluid flowing along the passageway (see, for example, Figure 5 : fluid flows through the sample probe 10 in the direction of AE), the outer surface defines an elongated front section along the length of the sample probe 10 relative to the direction of fluid flow (see, for example, Figure 5 : the section of the sample probe 10 located in region A) and the elongated rear section along the length of the sample probe 10 (see, for example, Figure 5 ,: the section of the sample probe 10 located in the region D).

[0055] In use, the sample probe 10 is introduced into a fluid stream and oriented so that the longitudinal axis 14 is perpendicular to the direction of fluid flow and the channels 24a, 24b, 24c, 24d are aligned with the direction of fluid flow. In this orientation, the fluid stream enters these channels 24a, 24b, 24c, 24d at the elongated leading section, flows through the elongated body 12, and exits the channels 24a, 24b, 24c, 24d at the elongated trailing section of the elongated body 12. The high-speed fluid from the leading section of the elongated body 12 that exits the channels at the trailing section of the elongated body 12 forms so-called "passive jets." These "passive jets" reduce the static pressure downstream of the elongated body, thereby helping to prevent the formation of adverse pressure gradients. This reduces the amount of boundary layer flow separation, thereby preventing the formation of vortices.

[0056] Figure 2 Also shown are two opposing openings 26a, 26b in the outer surface of the elongated body 12. The passages 24a and 24d intersect the two opposing openings 26a, 26b, respectively, perpendicularly, thereby forming "passive jets" around the elongated body 12 at various angles.

[0057] Applicants have discovered that forming "passive jets" at multiple angles around the elongated body 12 provides a more uniform pressure gradient around the elongated body 12. The passages 24a, 24b, 24c, 24d and the openings 26a, 26b direct the high-speed fluid from the front section of the elongated body 12 to a low-pressure region behind the rear section of the elongated body 12, thereby using the available kinetic energy in the flow to restrict lateral fluid motion around the elongated body 12. This not only reduces boundary layer separation from the rear section of the elongated body 12, but also reduces boundary layer separation from the elongated body 12 at other locations between the front and rear sections of the elongated body 12. Applicants have discovered that providing more than one passage 24 reduces the severity of alternating vortex shedding by increasing the kinetic energy available for vortex suppression at the rear section of the elongated body 12.

[0058] Figure 2 The elongated body is shown having a centerline 28 and the channels 24a, 24b, 24c, 24d are each offset from the centerline 28. A pair of channels 24b, 24c are typically offset by a distance greater than 4.5 mm. In the embodiment depicted, a pair of channels 24b, 24c are offset by a distance of 6.5 mm and another pair of channels 24a, 24d are offset by a distance of 9.5 mm.

[0059] Figure 1 The passages 24a, 24b, 24c, 24d are shown as having a rectangular cross-section having a width and a height; the width extending parallel to the longitudinal axis 14 of the elongated body 12. The width of each of the passages 24a, 24b, 24c, 24d extends substantially the entire length of the elongated body 12, and the height of each passage 24 is typically greater than 1 mm. In the illustrated embodiment, the height is 3 mm. Advantageously, each of the passages 24a, 24b, 24c, 24d has a constant cross-sectional dimension throughout its length to allow for the transfer of kinetic energy with minimal energy loss. In other words, it is generally undesirable to have any flow restriction in the passages 24a, 24b, 24c, 24d.

[0060] Each opening 26a, 26b comprises a rectangular cross-section having a width and a height; the width extends parallel to the longitudinal axis 14 of the elongated body 12. The width of each opening 26a, 26b extends substantially the entire length of the elongated body 12, and the height of each opening 26a, 26b is typically greater than 1 mm. In the described embodiment, the height is 3 mm. Advantageously, each opening 26a, 26b has a constant cross-section throughout its length to allow for the transfer of kinetic energy with minimal energy loss. In other words, it is generally undesirable to have any flow restriction in the openings 26a, 26b.

[0061] Figure 3 Shown Figure 1An end view of the first end 16 of the sample probe is shown. Figure 3 As seen in FIG, the sample probe includes an aperture 22 that allows fluid to flow into the sampling passage 20 and in a direction along the longitudinal axis 14 of the elongated body 12. The sampling passage 20 is used to obtain a sample from the fluid flow, which can then be analyzed to determine a characteristic of the fluid.

[0062] Figure 4 and 5 is around the cylinder C (such as Figure 4 As shown) and around the eddy current suppression device 10 of the present invention (as shown Figure 5 Figure 2. Computational velocity plot results for a computational flow simulation of a flow with a flow of φ (shown in Figure 2). Both simulations use the same fluid flow regime, i.e., the same Reynolds number.

[0063] Figure 4 Cylinder C is shown in a fluid flow moving from A to E. The fluid slows down as it hits the front section of cylinder C and forms a low-speed zone A. The fluid separates at the front section and moves in opposite directions around cylinder C. The fluid accelerates as it moves around the cylinder until it reaches the maximum speed zone B. Beyond this position, the fluid slows down to a second low-speed zone D as it moves around cylinder C. The change in fluid velocity around the cylinder produces a pressure gradient around the cylinder according to Bernoulli's principle. In the low-speed zone, such as in area D, the static pressure is high enough to produce an adverse pressure gradient, that is, it acts against the direction of flow. This adverse pressure gradient causes the fluid to circulate and eventually separates the boundary layer flow from cylinder C. The fluid separated in area D forms vortices E, also known as Karman vortex streets, which alternately shed following cylinder C.

[0064] Figure 5 The vortex suppression device 10 is shown in a fluid flow moving from A to E. The fluid decelerates as it strikes the front section of the vortex suppression device 10, forming a low-velocity zone A. The fluid separates at the front section and moves in opposite directions around the vortex suppression device 10. The fluid accelerates as it moves around the vortex suppression device 10 until it reaches a maximum velocity zone B near the inlet of the channels 24a-24d. The fluid from the maximum velocity zone B is then directed along the channels 24a-24d and openings 26a, 26b to the rear section of the vortex suppression device 10, exiting the channels 24a-24d and openings 26a, 26b as a "passive jet" J. The "passive jet" J reduces the static pressure downstream of the vortex suppression device 10. Reducing the static pressure helps prevent the formation of adverse pressure gradients. This reduces the amount of boundary layer flow separation, thereby preventing the formation of vortices. Additionally, the passages 24a-24d also reduce the severity of alternating vortex shedding (ie, Karman vortex streets) by confining the movement of low pressure areas to between the passages 24a-24d.

[0065] Figure 6 and 7 A second embodiment of the vortex suppression device is shown in the form of a different sample probe 30 including an elongated body 32 having an outer surface defining a longitudinal axis 34, a first end 36, and a second end 38. An internal sampling passage 40 is provided between the first end 36 and the second end 38 for collecting a fluid sample. Figure 6 and 7 The embodiment shown is essentially the same as Figure 1 However, the first end portion 36 of the sample probe includes a flow regulating structure 42 for regulating the flow of fluid into / out of the sampling passage 40. The flow regulating structure 42 is a cylindrical component that is detachably attached to the first end portion 36 of the sample probe 30 by a bolt 48. The flow regulating structure 42 also includes the same Figure 1-3 The same channels and openings as described in.

[0066] Available in Figure 7 As can be seen in the flow regulating structure 42, an internal passage 50 is aligned with and in fluid communication with the sampling passage 40. The internal passage 50 has an opening in which a filter 44 in the form of a perforated disk is located. The filter 44 is used to prevent particles of a certain size from entering the internal passage 50. Within the internal passage 50 is a valve structure 46, which includes a poppet valve body 52 biased by a coil spring 54 to rest on an annular valve seat 56. The valve structure 46 regulates the flow of fluid into and out of the sampling passage 40.

[0067] Figure 8-10 A third embodiment of an eddy current suppression device is shown in the form of a sample probe 100 comprising a cylindrical elongate body 102 having an outer surface defining a longitudinal axis 104 .

[0068] When the sample probe 100 is located in a fluid flow, the outer surface has an elongated front section and an elongated rear section relative to the direction of fluid flow. The elongated body 102 has a channel in the form of a circumferential groove 106, which follows a sinusoidal path around the elongated body 102, and the channel extends from the elongated front section of the elongated body 102 to the elongated rear section transverse to the longitudinal axis 104 of the elongated body 102. The grooves 106 are represented by alternating colors, blue and red. These colors are only used to distinguish one groove from other grooves adjacent to it. The grooves 106 reduce vortex-induced vibrations by guiding the high-speed fluid flow from the front section of the elongated body 102 to the rear section. The high-speed fluid at the rear section reduces the static pressure downstream of the elongated body 102. Reducing the static pressure helps prevent the formation of an adverse pressure gradient. This reduces the amount of boundary layer flow separation, thereby preventing the formation of vortices.

[0069] It will be appreciated that the sample probe 100 operates in the same manner as the sample probes 10 and 30. However, unlike the sample probes 10 or 30, the sample probe 100 can be oriented at any angle without reducing its effectiveness in preventing eddy currents, provided that the fluid flow moves in a direction transverse to the longitudinal axis of the elongated body 102. This is because the grooves 106 extend around the outer surface of the elongated body 102 rather than through it.

[0070] Another advantage of sample probe 100 is that circumferential grooves 106 are more efficient at diverting high-speed fluid to the rear section than the channels / openings of sample probes 10 and 30. In other words, high-speed fluid is directed to the rear section with smaller and less drastic changes in direction. Sharp changes in direction should be avoided because they result in energy loss. Therefore, sample probe 100 can be made smaller than sample probes 10 or 30 while providing the same vortex suppression capabilities. Reducing the size of the sample probe reduces material and manufacturing costs.

[0071] In the above-described embodiments, the elongated body 12, 32, 102 is shown as cylindrical. However, it is contemplated that other shapes of elongated bodies are within the scope of the present invention.

[0072] The sample probe 10 , 30 , 100 may be made of any suitable material, preferably a corrosion-resistant material, such as stainless steel, titanium, aluminum, brass, or the like.

[0073] While a number of specific embodiments have been described, it should be understood that the device may be implemented in many other forms. The present invention has been described in the context of a sample probe, but the invention should not be considered limited to such use. The present invention is applicable to vortex suppression generated by instruments inserted into a fluid stream. The present invention is therefore applicable to other applications such as flow meters, syringes, siphons, corrosion coupon holders, and thermowells.

[0074] In the following claims and in the foregoing description, unless express language or necessary meaning requires otherwise, the word "comprise" and variations thereof are used in an inclusive sense, i.e., indicating the presence of the listed features, but not excluding the presence or addition of additional features in the apparatus and methods disclosed herein.

[0075] Further patent applications may be filed in Australia or overseas based on or claiming priority from the present application. It will be appreciated that the appended provisional claims are provided for example only and are not intended to limit the scope of protection that may be claimed in any of these further applications. Features may subsequently be added to or deleted from the provisional claims to further define or redefine the invention or inventions.

[0076] Reference numerals

[0077] 10: Sample probe without adjustment mechanism

[0078] 12: Slender body

[0079] 14: Longitudinal axis

[0080] 16: First end

[0081] 18: Second end

[0082] 20: Sampling path

[0083] 22: Hole

[0084] 24a-d: Passage

[0085] 26a, 26b: Open

[0086] 28: Centerline

[0087] 30: Sample probe with adjustment mechanism

[0088] 32: Slender body

[0089] 34: Longitudinal axis

[0090] 36: First end

[0091] 38: Second end

[0092] 40: Sampling path

[0093] 42: Adjustment structure

[0094] 44: Filter

[0095] 46: Valve structure

[0096] 48: Bolt

[0097] 50: Internal passage

[0098] 52: Valve body

[0099] 54: Spring

[0100] 56: Seat

[0101] 100: Eddy current suppression device

[0102] 102: Slender body

[0103] 104: Longitudinal axis

[0104] 106: Slot

[0105] 108: Sampling path.

Claims

1. A vortex suppression device for a fluid flowing along a passage, comprising: An elongated body having an outer surface having an elongated front section and an elongated rear section along the length of the elongated body relative to the direction of fluid flow when the vortex suppression device is located in the passage, the elongated body having at least four channels extending from the front section to the rear section of the elongated body, the at least four channels all being defined on the same plane transverse to the longitudinal axis of the elongated body, and wherein a first pair of channels of the four channels each intersects perpendicularly with an opening defined in the outer surface of the elongated body, and wherein a second pair of channels of the four channels is defined within the interior of the first pair of channels and does not intersect with any opening, the at least four channels being configured so that, in use, the four channels allow fluid to flow toward the rear section to prevent the formation of a vortex when the vortex suppression device is located in the passage.

2. The eddy current suppression device according to claim 1, wherein: The elongated body has a circular or oval cross-section.

3. The eddy current suppression device according to claim 1 or 2, wherein: The passage extends through the elongated body.

4. The eddy current suppression device according to claim 3, wherein: Each of the four channels includes a rectangular cross-section having a width and a height, the width extending parallel to the longitudinal axis of the elongated body.

5. The eddy current suppression device according to claim 4, wherein: The height of the four channels is greater than 1 mm.

6. The eddy current suppression device according to claim 3, wherein: The four channels are offset from a centerline of a cross-sectional area of the elongated body.

7. The eddy current suppression device according to claim 6, wherein: The second pair of channels are offset by a distance greater than 4.5 mm. 8 . The vortex suppression device according to claim 6 , wherein the first pair of channels are offset from each other by a distance of 11 mm.

9. The eddy current suppression device according to claim 1, wherein: The opening includes a rectangular cross-section having a width and a height, the width extending parallel to the longitudinal axis of the elongated body.

10. The eddy current suppression device according to claim 9, wherein: The height of each of the openings is greater than 1 mm.

11. The eddy current suppression device according to claim 1, wherein: The elongated body is a sample probe having a first end, a second end, and an internal sampling passage extending between the first and second ends for collecting a fluid sample, wherein the first end has a hole for receiving fluid flowing into the internal sampling passage.

12. The eddy current suppression device according to claim 11, wherein: The sample probe includes a threaded connection at the second end for connecting the sample probe to an auxiliary piece of equipment.

13. The eddy current suppression device according to claim 11 or 12, wherein: The sample probe includes a flow regulating structure at the first end for regulating fluid flow into or out of the internal sampling passage.

14. The eddy current suppression device according to claim 13, wherein: The flow regulating structure includes a valve.

15. The eddy current suppression device according to claim 13, wherein: The flow regulating structure includes a filter.

16. The eddy current suppression device according to claim 1, wherein: The elongated body includes any one or a combination of the following components: a) sample probe; b) injection nozzles for diffusing fluids; c) measuring devices for determining properties of fluids; or d) Corrosion coupons used to monitor pipeline corrosion.

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