CN210513285U - Novel flow adjuster and metering device integration device - Google Patents
Novel flow adjuster and metering device integration device Download PDFInfo
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- CN210513285U CN210513285U CN201922020071.9U CN201922020071U CN210513285U CN 210513285 U CN210513285 U CN 210513285U CN 201922020071 U CN201922020071 U CN 201922020071U CN 210513285 U CN210513285 U CN 210513285U
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Abstract
The utility model discloses a novel adjuster and metering device integrate flows device, this novel adjuster that flows includes the circular shape cowling panel, is provided with a plurality of round holes on the cowling panel, and the round hole uses the cowling panel center to be radial distribution as the benchmark, and the aperture reduces by interior outside to in proper order, and this metering device integrated device is including the preceding shut-off valve that connects gradually, flow adjuster, preceding straight tube section, precession swirl flowmeter, back straight tube section and back shut-off valve. The utility model discloses an integrated design of flow adjuster and precession vortex flowmeter can eliminate the pipeline air current swirl effectively and improve the velocity distribution distortion to a certain extent, effectively improves precession vortex flowmeter's measurement accuracy under the condition that reduces to take up an area of, reduces because the unsatisfactory condition of rectification effect that the flow adjuster installation carelessly or lead to with the measuring equipment adaptability is poor, provides the reference standard for flow adjuster and measuring instrument integration production design.
Description
Technical Field
The utility model belongs to oil field associated gas measurement field especially relates to the measurement of oil field associated gas under the fluid flow state complex condition in the oil field production.
Background
The precession vortex flowmeter is a new generation flowmeter integrating flow measurement and temperature and pressure detection functions, can automatically track and correct the temperature, pressure and compression factor of the gas to be detected, and can directly detect the standard volume flow and total amount of the gas. Because the flowmeter has no mechanical rotating part, is not influenced by medium density and viscosity, is convenient to install and use, safe and explosion-proof, is not easy to corrode, and has good stability, the flowmeter replaces the prior orifice plate flowmeter in the oil field production field and is widely applied.
The actual oil field production field condition is complicated, and the pulsation flow caused by the sudden change of the gas flow velocity and the pressure in the closed pipeline can cause a large error in metering, and the maximum error can reach 20-30%. On the other hand, the pipeline configuration of the metering station usually generates various flow state distortions, such as sudden change of diameters of upstream and downstream pipelines of the flowmeter, and asymmetric vortex and velocity distribution profiles caused by flow blocking parts such as elbows and tees, thereby causing flow state distortions and causing large errors on the metering accuracy. In order to reduce the influence of the flow state on the metering accuracy, a straight pipe section which is long enough is reasonably designed in front of and behind the flow meter so as to ensure the stability of the flowing medium. For the precession vortex flowmeter, the straight tube section before the table is not less than 5D at least, and the straight tube section after the table is not less than 2D. In addition, the length of the straight pipeline is adjusted according to different flow choking pieces of the pipeline upstream of the flowmeter. However, because the method is limited by the geographical spatial position, and the flow distortion caused by the pipeline configuration can propagate for a distance of hundreds of pipe diameters to completely disappear, the introduction of the flow regulator upstream of the flowmeter is selected to reduce or eliminate the flow distortion extending upstream of the flowmeter to the maximum extent, and the occupied land is saved.
Since the flow conditioner itself also causes flow pattern distortion, a straight pipe section of a certain length is still required between the flow conditioner and the inlet of the flowmeter, and the length of the pipe is selected according to different functions of the flow conditioner design. If the installation is not done with care, the resulting side effects may cause further deviations in the metering. However, due to the difference between the process design of each station and the metering equipment, the flow regulator is directly installed on the basis of the original metering equipment, and a very ideal effect cannot be achieved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a novel flowing adjuster and metering device integration device can improve precession swirl gas flowmeter's the measurement degree of accuracy, and the design length that the straight tube was said around the reduction overcomes the unsatisfactory condition of rectifier effect that the adjuster installation carelessly or leads to with the measuring equipment adaptability is poor, provides the reference standard for rectifier and metering device integration production design.
In order to achieve the above object, the utility model provides a novel flowing adjuster, including the circular shape cowling panel, be provided with a plurality of round holes on the cowling panel, the round hole uses the cowling panel center to be radial distribution as the benchmark. According to the flowing characteristic that the flowing medium has larger flow velocity at the center of the pipeline and reduces the flow velocity along the radial direction, in order to ensure that the flow velocity distribution of the flowing medium is uniform after the flowing medium is adjusted by the rectifying plate, the aperture of the round hole is reduced from inside to outside in sequence.
Furthermore, the round holes are respectively arranged on the rectifying plate from inside to outside as a central round hole, a first circle of round holes, a second circle of round holes and a third circle of round holes, and the aperture r of the central round hole00.18D, the aperture r of the first circle of round holes10.16D, the aperture r of the round hole of the second circle20.12D, the aperture r of the round hole of the third circle3And 0.08D, wherein D is the diameter of the rectifying plate and the pipeline to be measured.
Furthermore, the distance d between the circle center of the first circle of round hole and the center of the rectifying plate1The distance D between the center of the second circle of round hole and the center of the rectifying plate is 0.375D2The distance D between the center of the third circle of round hole and the center of the rectifying plate is 0.68D2＝0.9D。
Further, 48 round holes are arranged, wherein 7 round holes are arranged in the first circle, 16 round holes are arranged in the second circle, and 24 round holes are arranged in the third circle.
Further, the round hole inlet is provided with a circular arc chamfer so as to reduce the pressure loss of the flow adjuster.
Further, the thickness h of the rectifier plate is 0.125D.
Furthermore, the utility model provides a metering device integrated device, including the front shutoff valve flow adjuster, preceding straight tube section, precession swirl flowmeter, back straight tube section and back shutoff valve, the front shutoff valve flow adjuster preceding straight tube section precession swirl flowmeter back straight tube section with the back shutoff valve connects gradually respectively. Since the flow adjuster itself causes a certain flow pattern distortion, the straight front pipe section provided between the flow adjuster and the precession vortex flowmeter ensures that the flow adjuster achieves an optimal effect on flow adjustment.
Further, normal conveying and maintenance inspection of gas are guaranteed, a bypass pipeline and a bypass valve are arranged on the premise that the front straight pipe section and the rear straight pipe section are met, the input end of the bypass pipeline is connected with the input end of the front cut-off valve, the output end of the bypass pipeline is connected with the output end of the rear cut-off valve, and the bypass valve is arranged in the bypass pipeline.
Further, the length of the front straight pipe section is 7.5 times of the diameter of the front straight pipe section.
Further, the rear straight tube section has a length equal to the diameter thereof.
Further, flanges are arranged at two ends of the flow adjuster, and the flow adjuster is connected with the front straight pipe section through the flanges.
The beneficial effects of the utility model reside in that:
(1) through the integrated design of the flow regulator and the precession vortex flowmeter, the airflow vortex in a pipeline can be effectively eliminated, the speed distribution distortion is improved to a certain extent, the metering precision of the precession vortex flowmeter is effectively improved under the condition of reducing occupied land, the condition that the rectification effect is not ideal due to the fact that the flow regulator is installed carelessly or has poor adaptability with metering equipment is reduced, and a reference standard is provided for the integrated production design of the flow regulator and the metering instrument;
(2) according to the flowing characteristics that the flowing medium has larger flow velocity at the center of the pipeline and the flow velocity is reduced along the radial direction, the apertures of a plurality of round holes on a rectifying plate of the flow regulator are sequentially reduced from inside to outside, so that the flow velocity distribution of the flowing medium after being regulated by the flow regulator is uniform;
(3) because the flow adjuster can cause certain flow state distortion, the front straight pipe section arranged between the flow adjuster and the precession vortex flowmeter can ensure that the flow adjuster achieves the best effect on flow adjustment;
(4) the circular hole inlet of the flow adjuster is provided with the arc chamfer, so that the pressure loss of the flow adjuster can be reduced;
(5) the bypass pipeline and the bypass valve are arranged on the premise of meeting the requirements of the front straight pipe section and the rear straight pipe section, so that normal conveying and maintenance and inspection of gas can be guaranteed.
Drawings
Fig. 1 is a schematic structural view of the novel flow conditioner of the present invention;
fig. 2 is a schematic cross-sectional view of the novel flow conditioner of the present invention along a radial direction;
FIG. 3 is a schematic diagram of a round hole inlet chamfer of the novel flow conditioner of the present invention;
fig. 4 is a schematic view of the integrated device of the metering device of the present invention;
reference numerals: 1-front cut-off valve, 2-flow adjuster, 3-front straight pipe section, 4-precession vortex flowmeter, 5-rear straight pipe section, 6-rear cut-off valve, 7-bypass pipeline and 8-bypass valve.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
In view of the measurement accuracy requirement and the measurement medium flow state of the precession vortex flowmeter, in order to eliminate the vortex and improve the medium-level velocity distribution distortion, the present embodiment provides a novel flow adjuster based on a Zanker flow adjustment plate, as shown in fig. 1 and 2, the novel flow adjuster includes a circular rectifying plate, a plurality of round holes are arranged on the rectifying plate, and the round holes are radially distributed by taking the center of the rectifying plate as a reference. According to the flowing characteristic that the flowing medium has larger flow velocity at the center of the pipeline and reduces the flow velocity along the radial direction, in order to ensure that the flow velocity distribution of the flowing medium is uniform after the flowing medium is adjusted by the rectifying plate, the aperture of the round hole is reduced from inside to outside in sequence.
Specifically, the round holes are respectively arranged on the rectifying plate from inside to outside as a central round hole, a first circle of round holes, a second circle of round holes and a third circle of round holes, and the aperture r of the central round hole00.18D, the aperture r of the first circle of round holes10.16D, the aperture r of the round hole of the second circle20.12D, the aperture r of the round hole of the third circle3And 0.08D, wherein D is the diameter of the rectifying plate and the pipeline to be measured. The thickness h of the flow straightener was 0.125D, and the flow ratio was 59.52%. The distance d between the circle center of the first circle of round hole and the center of the rectifying plate1The distance D between the center of the second circle of round hole and the center of the rectifying plate is 0.375D2The distance D between the center of the third circle of round hole and the center of the rectifying plate is 0.68D20.9D. The number of the round holes is 48,wherein the first circle of round hole is provided with 7, and the second circle of round hole is provided with 16, and the third circle of round hole is provided with 24. Further, as shown in fig. 3, the circular hole inlet is provided with a rounded chamfer to reduce the pressure loss of the flow conditioner.
To illustrate the improvement of the novel flow regulator of the present embodiment, a numerical model was established by using a 90 ° elbow, and numerical simulation calculations were performed on the novel flow regulator of the present embodiment and a new star flow regulator (K-Lab NOVA) recommended in ISO5167, respectively. The diameter of the elbow pipe model is 50mm, the origin of coordinates is located at the center of the left side of the rectifying plate, the X axis is the flowing direction, the inlet straight pipe section is 100mm, the front end straight pipe section of the rectifying plate is 50mm, and the rear end straight pipe section is 1 m. The flowing medium in the pipe is natural gas. And D/2 before and after the flow straightener and X (60, 100, 500 and 1000 mm) of the cross section of the flow straightener are respectively taken to observe the speed distribution, wherein D is the diameter of the flow straightener. According to the simulation result, the speed distribution of the front ends of the two flow regulators is that the outer side flow speed of the pipeline is large, and the inner side flow speed of the pipeline is small; after flowing through the flow regulator, the speed is distributed in a ring shape, the central speed is maximum, and the speed is reduced towards the outer ring in sequence. The flow velocity distribution of the two flow regulators is uniform at the cross section of 100mm after adjustment, but the flow of the K-Lab NOVA regulator after adjustment is unstable, and the flow velocity distribution in the subsequent flow is obviously different, while the flow regulator of the novel flow regulator of the embodiment has stable flow velocity distribution in the subsequent pipe section, and the condition of disordered distribution does not occur. Therefore, the new flow regulator of the present embodiment can improve the regulation effect well.
Further, a cross section of about D/2 before and after the two flow conditioners was taken for pressure loss analysis. The front-back pressure loss of the K-Lab NOVA regulator is about 5.53Pa, while the front-back pressure loss of the novel flow regulator of the embodiment is about 4.9Pa, and the pressure loss of the two pressure losses are not greatly different, but the novel flow regulator of the embodiment has higher flow ratio and can effectively reduce the pressure loss. The precession vortex flowmeter has large pressure loss which is 3-4 times that of other flowmeters, so the flow regulator with high through-flow ratio is suitable.
Example 2
This example is based on example 1:
the embodiment provides a metering instrument integrated device, as shown in fig. 4, which includes a front block valve 1, a flow adjuster 2, a front straight pipe section 3, a precession vortex flowmeter 4, a rear straight pipe section 5 and a rear block valve 6, wherein the front block valve 1, the flow adjuster 2, the front straight pipe section 3, the precession vortex flowmeter 4, the rear straight pipe section 5 and the rear block valve 6 are respectively connected in sequence. The provision of the straight front tube section 3 between the flow modifier 2 and the precession vortex flowmeter 4 ensures that the flow modifier 2 has an optimum effect on the flow modification, since the flow modifier 2 itself also causes a certain distortion of the flow pattern. Specifically, the length of the front straight pipe section 3 is 7.5 times of the diameter of the front straight pipe section, the length of the rear straight pipe section 5 is equal to the diameter of the rear straight pipe section, flanges are arranged at two ends of the flow adjuster 2, and the flow adjuster 2 is connected with the front straight pipe section 3 through the flanges.
In order to guarantee normal conveying and maintenance and inspection of gas, a bypass pipeline 7 and a bypass valve 8 are arranged on the premise that the requirements of the front straight pipe section 3 and the rear straight pipe section 5 are met, the input end of the bypass pipeline 7 is connected with the input end of the front cut-off valve 1, the output end of the bypass pipeline 7 is connected with the output end of the rear cut-off valve 6, and the bypass valve 8 is arranged in the bypass pipeline 7.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the present invention is directed must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either a wired or wireless connection.
Claims (10)
1. A novel flow adjuster is characterized by comprising a circular rectifying plate, wherein a plurality of round holes are arranged on the rectifying plate, the round holes are radially distributed by taking the center of the rectifying plate as a reference, and the hole diameter is sequentially reduced from inside to outside; the round holes are respectively arranged on the rectifying plate from inside to outside as a central round hole, a first circle of round holes, a second circle of round holes and a third circle of round holes, and the aperture r of the central round hole00.18D, the aperture r of the first circle of round holes10.16D, the aperture r of the round hole of the second circle20.12D, the aperture r of the round hole of the third circle3And 0.08D, wherein D is the diameter of the rectifying plate and the pipeline to be measured.
2. A novel flow regulator according to claim 1, wherein the distance d between the center of the first circular hole and the center of the rectifying plate1The distance D between the center of the second circle of round hole and the center of the rectifying plate is 0.375D2The distance D between the center of the third circle of round hole and the center of the rectifying plate is 0.68D2＝0.9D。
3. The novel flow conditioner according to claim 1, wherein there are 48 circular holes, wherein there are 7 circular holes in the first circle, 16 circular holes in the second circle, and 24 circular holes in the third circle.
4. A novel flow conditioner according to claim 1, wherein said round orifice inlet is provided with a rounded chamfer.
5. A novel flow conditioner according to claim 1, wherein the thickness h of said plate is 0.125D.
6. A meter-integrated apparatus using the flow regulator according to claim 1, comprising a front shutoff valve, the flow regulator, a front straight pipe section, a precession vortex flowmeter, a rear straight pipe section, and a rear shutoff valve, which are connected in sequence, respectively.
7. The integrated metering device of claim 6, wherein an input end of the bypass pipeline is connected with an input end of the front block valve, an output end of the bypass pipeline is connected with an output end of the rear block valve, and the bypass valve is arranged in the bypass pipeline.
8. A meter integration device according to claim 6, wherein the length of the straight forward pipe section is 7.5 times its diameter.
9. A meter integration device according to claim 6, wherein the rear straight tube section has a length equal to its diameter.
10. A meter integration device according to claim 6, wherein flanges are provided at both ends of the flow adjuster, and the flow adjuster is connected to the front straight pipe section through the flanges.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922020071.9U CN210513285U (en) | 2019-11-21 | 2019-11-21 | Novel flow adjuster and metering device integration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922020071.9U CN210513285U (en) | 2019-11-21 | 2019-11-21 | Novel flow adjuster and metering device integration device |
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| CN210513285U true CN210513285U (en) | 2020-05-12 |
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| CN201922020071.9U Active CN210513285U (en) | 2019-11-21 | 2019-11-21 | Novel flow adjuster and metering device integration device |
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