CN114061671A - Vortex street flowmeter - Google Patents
Vortex street flowmeter Download PDFInfo
- Publication number
- CN114061671A CN114061671A CN202111339579.0A CN202111339579A CN114061671A CN 114061671 A CN114061671 A CN 114061671A CN 202111339579 A CN202111339579 A CN 202111339579A CN 114061671 A CN114061671 A CN 114061671A
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- China
- Prior art keywords
- ring
- flange
- pipe
- siphunculus
- sleeve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/3209—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/10—Preventing damage by freezing or excess pressure or insufficient pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
Abstract
The invention discloses a vortex shedding flowmeter, and relates to the technical field of flowmeters. The vortex shedding flowmeter comprises a measuring body, two sleeves and a through pipe, wherein flanges are arranged at two opposite ends of the bottom of the measuring body, the end parts of the two sleeves are respectively fixed on the end surfaces of the two flanges, the peripheral surface of one sleeve is provided with a plurality of axial sliding grooves, a buffer structure is arranged in the sleeve, one end of the buffer structure is slidably inserted into the flange, one end of the sleeve, which is adjacent to the flange, is provided with an outer flange along the radial direction, the annular surface of the end part of the outer flange is provided with a plurality of screw rods, and the screw rods are spirally sleeved with nuts; the siphunculus passes through buffer structure and flange joint, and the sleeve pipe is kept away from the inside radial clamping structure that is provided with of one end of flange, and the inboard clamp of radial clamping structure fits on the outer peripheral face of siphunculus hugging closely. The vortex shedding flowmeter is convenient for installing and connecting through pipes with different pipe diameters.
Description
Technical Field
The invention belongs to the technical field of flowmeters, and particularly relates to a vortex shedding flowmeter.
Background
The vortex shedding flowmeter is a volume flowmeter which is produced according to the Karman vortex shedding principle and is used for measuring the volume flow of gas, steam or liquid, the volume flow or mass flow under standard conditions, is mainly used for measuring the flow of industrial pipeline medium fluid, such as various media of gas, liquid, steam and the like, and is characterized by small pressure loss, wide measuring range, high precision, almost no influence of parameters such as fluid density, pressure, temperature, viscosity and the like when measuring the volume flow under working conditions, no movable mechanical parts, high reliability, small maintenance amount and long-term stability of instrument parameters. At present, when the flow inside the pipeline is detected by utilizing the flowmeter, the pipeline is required to be installed on the flowmeter, the flowmeter can only be connected with the pipeline with the corresponding pipe diameter according to the opening size of the flange, the pipeline with other pipe diameters cannot be connected, and the flowmeter which needs to be updated is required to detect, so that the detection efficiency of the pipeline flow is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a vortex shedding flowmeter.
A vortex shedding flowmeter comprises a measuring body, two sleeves and a through pipe, wherein flanges are arranged at two opposite ends of the bottom of the measuring body, the end parts of the two sleeves are respectively fixed on the end surfaces of the two flanges, the peripheral surface of one sleeve is provided with a plurality of axial sliding grooves, a buffer structure is arranged in the sleeve, one end of the buffer structure is inserted in the flange in a sliding manner, an outer flange is arranged at one end of the sleeve, which is adjacent to the flange, in a protruding manner along the radial direction, a plurality of screw rods are arranged on the ring surface of the end part of the outer flange, and nuts are spirally sleeved on the screw rods; the siphunculus passes through buffer structure and flange joint, and the sleeve pipe is kept away from the inside radial clamping structure that is provided with of one end of flange, and on the inboard clamp of radial clamping structure fits the outer peripheral face of siphunculus hugging closely, and radial clamping structure passes through stay cord and buffer structure linkage, and the tip department that the flange was kept away from to the sleeve pipe still is provided with the rubber ring, and the rubber ring cover is located on the outer peripheral face of siphunculus.
In one embodiment, the buffer structure comprises an inner pipe, one end of the inner pipe is located at the center of the inner side of the flange, a plurality of limiting strips are arranged on the outer side face of the inner pipe, a plurality of limiting grooves are formed in the side wall of the inner side of the flange, the limiting strips are connected with the flange in a sliding mode through the limiting grooves, one end of the through pipe is inserted into the inner side of the end, far away from the flange, of the inner pipe, and the end portion of the inner pipe is in threaded connection with the end portion of the through pipe.
In one embodiment, the buffer structure further includes an inner ring, the inner ring is slidably disposed inside the sleeve, a plurality of limiting plates are fixedly connected to an outer circumferential surface of the inner ring, the limiting plates are respectively inserted into the axial sliding grooves, the screw rod slidably penetrates through the limiting plates, and the nut abuts against a side surface of the limiting plate, which is far away from the flange.
In one embodiment, a ring plate is fixedly arranged at the center inside the sleeve, the ring plate is positioned on one side, away from the flange, of the inner ring, a plurality of axial rods are arranged on the annular end face of the ring plate, the axial rods slidably penetrate through the inner ring, one ends, away from the ring plate, of the axial rods are fixedly connected with the inner side wall of the sleeve, a first spring is sleeved on each axial rod, and the first springs are abutted between the inner side wall of the sleeve and the inner ring.
In one embodiment, the buffer structure further comprises a diaphragm and a plurality of connecting strips, the diaphragm is in a bowl shape with an opening at the bottom, a cavity of the diaphragm faces towards the inner ring, the edge of the large-diameter end of the diaphragm is connected to the inner ring, the edge of the small-diameter end of the diaphragm is connected to the end part of the inner tube, the connecting strips are positioned on the inner side of the diaphragm and arranged around the through tube, one end of each connecting strip is fixedly connected with the end surface of the inner tube, the other end of each connecting strip is fixedly connected with the inner side surface of the inner ring, the connecting strips are provided with a plurality of groups of ring clamping pieces and a plurality of buffer ring pieces, a through groove is formed in the inner side of each group of ring clamping pieces, the outer peripheral edge of each buffer ring piece is clamped in the through groove, the outer diameter of each ring clamping piece is equal to the outer diameter of each buffer ring piece, and the inner diameter of each ring clamping piece is larger than the inner diameter of each buffer ring piece; the inner diameter of a plurality of buffering ring pieces gradually reduces along the direction towards the inner tube, the end part of the through pipe is provided with a small-diameter insertion end, the end part of the small-diameter insertion end, which is far away from the flange, is provided with a step ring part, and the small-diameter insertion end penetrates through the centers of the buffering ring pieces.
In one of them embodiment, radial clamping structure includes a plurality of arc sliders, and a plurality of arc sliders are along sheathed tube internal perisporium evenly distributed, and the relative both ends of stay cord are connected respectively on arc slider and inner ring, and the arc slider medial surface is connected with the support, and the support lower extreme is provided with the concave arc clamping piece, and the interior concave surface and the siphunculus outer peripheral face of concave arc clamping piece correspond the laminating, and the inside second spring that is provided with of arc slider, support medial surface pass through second spring and arc slider inside wall fixed connection.
In one of them embodiment, the one end anchor ring that the crown plate deviates from the inner ring is provided with a plurality of down tube, and the flange was kept away from to the other end and the sleeve pipe of a plurality of down tube one end inside wall fixed connection, and the distance between down tube and the siphunculus axis reduces along the direction towards the flange gradually, and per two down tube sets up to a set of, all has cup jointed the third spring on every group down tube, and the third spring supports to hold between crown plate and arc slider.
In one embodiment, each arc-shaped sliding block is slidably sleeved on one group of inclined rods, and an isolation gap is formed between the outer peripheral surface of each arc-shaped sliding block and the inner side wall of each sleeve.
The invention has the technical effects and advantages that:
1. the through pipes with different pipe diameters are sleeved in the sleeve by utilizing the plurality of buffering ring sheets, and when the inner side end of the through pipe corresponds to the inner side end of the inner pipe, the through pipe is rotated, so that the inner side end of the inner pipe is spirally sleeved on the surface of the inner side end of the through pipe; the nut is rotated, the nut pushes the limiting plate to slide in the axial sliding groove inner side with the spiral effect of the screw rod, when the inner ring moves, the inner ring drives the arc-shaped sliding block to be close to the ring plate gradually through the stay cord, when the arc-shaped sliding block pressurizes the third spring, the concave arc clamping piece at the inner side end of the arc-shaped sliding block is gradually attached to the outer side surface of the through pipe, until the plurality of arc-shaped sliding blocks enable the inner concave surface of the concave arc clamping piece to be closely attached to the outer side surface of the through pipe through the elastic force of the second spring, the radial clamping structure is convenient to clamp the through pipes with different pipe diameters, and the clamping effect of the through pipe in the sleeve is improved.
2. According to the invention, the vibration amplitude of the through pipe can be reduced through the elastic effect of the inner pipe, the vibration amplitude of the through pipe in the sleeve can be further reduced through the matching of the plurality of buffering ring pieces and the connecting strips and the matching of the second spring, the bracket and the concave arc clamping piece, the force generated by the vibration of the through pipe is absorbed by the connecting strips and the second spring, the separation of the inner pipe from the through pipe caused by the vibration is avoided, the connection stability of the inner pipe and the through pipe is improved, the vibration of the through pipe is prevented from being transmitted into the measuring body, and the damage of the measuring body caused by the vibration is avoided.
3. According to the invention, the through pipe is arranged in the sleeve, the power entering the through pipe impacts the buffering ring sheets, the impact force of the through pipe pushes the inner pipe to move in the flange through the buffering ring sheets, the impact force of the through pipe on the buffering ring sheets is absorbed by the elasticity of the first spring and the connecting strip, and the impact damage of the connection of the through pipe and the inner pipe is reduced; when the arc slider moved to the crown plate direction, the arc slider medial extremity was close to the siphunculus lateral surface gradually, and the concave arc clamping piece of support medial extremity laminated with the siphunculus surface gradually, utilized the elasticity of second spring to make the indent of concave arc clamping piece extrude the siphunculus lateral surface, thereby utilized the elasticity concave arc clamping piece of a plurality of second springs and the extrusion friction of siphunculus lateral surface, reduced the siphunculus to the impact force of the inboard end.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a vortex shedding flowmeter according to an embodiment of the present invention;
FIG. 2 shows a perspective exploded view of a vortex shedding flowmeter according to an embodiment of the invention;
FIG. 3 is an overall cross-sectional schematic view of a flange to sleeve connection according to an embodiment of the present invention;
FIG. 4 is a schematic perspective cross-sectional view of a cushioning structure according to an embodiment of the present invention;
FIG. 5 is an enlarged view of the structure of portion A of FIG. 4 according to the present invention;
FIG. 6 is a schematic sectional view showing a flange-to-sleeve joint according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of an arc slider according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a vortex shedding flowmeter, as shown in figures 1-4, the vortex shedding flowmeter comprises a measuring body 1, two sleeves 4 and a through pipe 8, wherein flanges 2 are arranged at two opposite ends of the bottom of the measuring body 1, the end parts of the two sleeves 4 are respectively fixed on the end surfaces of the two flanges 2, a plurality of axial sliding grooves 5 are arranged on the peripheral surface of one sleeve 4, a buffer structure is arranged in the axial sliding grooves, one end of the buffer structure is slidably inserted in the flange 2, an outer flange is arranged at one end of the sleeve 4, which is adjacent to the flange 2, in a protruding manner along the radial direction, a plurality of screw rods 6 are arranged on the ring surface of the end part of the outer flange, and nuts 7 are spirally sleeved on the screw rods 6; siphunculus 8 passes through buffer structure and is connected with flange 2, and sleeve pipe 4 keeps away from flange 2 one end inside is provided with radial clamping structure, and on the inboard clamp of radial clamping structure fitted the outer peripheral face of siphunculus 8, and radial clamping structure passes through stay cord 9 and buffer structure linkage, and the tip department that flange 2 was kept away from to sleeve pipe 4 still is provided with rubber ring 10, and rubber ring 10 cover is located on the outer peripheral face of siphunculus 8.
Buffer structure includes inner tube 11, and 11 one end of inner tube is in 2 inboard center departments of flange, and 11 lateral surfaces of inner tube are provided with a plurality of spacing 12, are provided with a plurality of spacing grooves 13 on the 2 inboard lateral walls of flange, and spacing 12 passes through spacing groove 13 and 2 sliding connection of flange, and the one end of siphunculus 8 is inserted and is located the one end inboard that flange 2 was kept away from to inner tube 11, and inner tube 11 and 8 tip threaded connection of siphunculus. The buffer structure further comprises an inner ring 14, the inner ring 14 is slidably disposed on the inner side of the sleeve 4, a plurality of limiting plates 15 are fixedly connected to the outer peripheral surface of the inner ring 14, the limiting plates 15 are respectively inserted into the axial sliding grooves 5, the screw 6 slidably penetrates through the limiting plates 15, and the nut 7 abuts against the side surface of the limiting plate 15 far away from the flange 2. The inner center of the sleeve 4 is fixedly provided with a ring plate 16, the ring plate 16 is positioned on one side of the inner ring 14 far away from the flange 2, a plurality of axial rods 17 are arranged on the annular end face of the ring plate 16, the axial rods 17 slidably penetrate through the inner ring 14, one ends of the axial rods 17 far away from the ring plate 16 are fixedly connected with the inner side wall of the sleeve 4, each axial rod 17 is sleeved with a first spring 18, and the first springs 18 are abutted between the inner side wall of the sleeve 4 and the inner ring 14.
The buffer structure further comprises a diaphragm 23 and a plurality of connecting strips 19, the diaphragm 23 is in a bowl shape with an opening at the bottom, a cavity of the diaphragm 23 faces the inner ring 14, the edge of the large-diameter end of the diaphragm 23 is connected to the inner ring 14, the edge of the small-diameter end of the diaphragm 23 is connected to the end part of the inner tube 11, the connecting strips 19 are located on the inner side of the diaphragm 23 and arranged around the through tube 8, one end of each connecting strip 19 is fixedly connected with the end surface of the inner tube 11, the other end of each connecting strip is fixedly connected with the inner side surface of the inner ring 14, the connecting strips 19 are provided with a plurality of groups of ring clamping pieces 22 and a plurality of buffer ring pieces 20, a through groove 21 is formed in the inner side of each group of ring clamping pieces 22, the outer peripheral edge of each buffer ring piece 20 is clamped in the through groove 21, the outer diameter of each ring clamping piece 22 is equal to the outer diameter of the buffer ring piece 20, and the inner diameter of each ring clamping piece 22 is larger than the inner diameter of the buffer ring piece 20; the inner diameter of a plurality of buffering ring pieces 20 gradually decreases along the direction towards the inner pipe 11, the end of the through pipe 8 is provided with a small-diameter insertion end, the end of the small-diameter insertion end, which is far away from the flange 2, is provided with a step ring part, and the small-diameter insertion end penetrates through the centers of the buffering ring pieces 20.
Radial clamping structure includes a plurality of arc sliders 24, a plurality of arc sliders 24 are along sleeve 4's internal perisporium evenly distributed, the relative both ends of stay cord 9 are connected respectively on arc slider 4 and inner ring 14, arc slider 24 medial surface is connected with support 25, the support 25 lower extreme is provided with concave arc clamping piece 26, concave arc clamping piece 26's interior concave surface corresponds the laminating with 8 outer peripheral faces of siphunculus, arc slider 24 inside is provided with second spring 27, support 25 medial surface passes through second spring 27 and 24 inside wall fixed connection of arc slider. The ring plate 16 deviates from the one end anchor ring of inner ring 14 and is provided with a plurality of down tube 28, the other end of a plurality of down tube 28 and the one end inside wall fixed connection that flange 2 was kept away from to sleeve pipe 4, the distance between down tube 28 and the siphunculus 8 axis reduces along the direction towards flange 2 gradually, every two down tube 28 set up to a set of, all cup jointed the third spring 29 on every group down tube 28, the third spring 29 supports and holds between ring plate 16 and arc slider 24. Each arc-shaped sliding block 24 is slidably sleeved on a group of inclined rods 28, and an isolation gap is formed between the outer peripheral surface of each arc-shaped sliding block 24 and the inner side wall of the sleeve 4.
When measuring body 1 and examining the time measuring body, the fluid can be at 8 inside vibrations of siphunculus, drive inner tube 11 vibrations through siphunculus 8 during the condition of fluid vibrations, the elastic effect of the inner tube 11 of PTEE material itself can reduce the vibration range of siphunculus 8, a plurality of buffering ring pieces 20 and 19 cooperations of connecting strip and second spring 27, support 25 and concave arc clamping piece 26 cooperation, can further reduce siphunculus 8 at the inside vibration range of sleeve pipe 4, avoid vibrations to lead to inner tube 11 and siphunculus 8 to break away from, improve the stability of being connected of inner tube 11 and siphunculus 8, thereby avoid siphunculus 8's vibrations to transmit inside measuring body 1, avoid vibrations to lead to flowmeter 1 to measure the body and appear the damage.
When the side face of the end part of the through pipe 8 contacts the buffering ring piece 20, the power of the through pipe 8 impacts the buffering ring piece 20, the buffering ring piece 20 drives the inner ring 14 to move through the ring clamping piece 22 and the connecting strip 19 under the impact force of the through pipe 8, the inner ring 14 extrudes the first spring 18 while the inner ring 14 slides on the surface of the axial rod 17, the inner ring 14 drives the limiting plate 15 to slide on the inner side of the axial sliding groove 5, and the impact force of the through pipe 8 on the buffering ring piece 20 is primarily absorbed by the elastic force of the first spring 18. The impact force of the through pipe 8 pushes the inner pipe 11 to move in the flange 2 through the plurality of buffering ring pieces 20, the impact force of the through pipe 8 on the buffering ring pieces 20 is absorbed by the elastic force of the first spring 18 and the connecting strip 19, and the impact damage of the connection of the through pipe 8 and the inner pipe 11 is reduced.
Utilize rubber ring 10 and diaphragm 23 cooperation can guarantee the inside sealed effect of sleeve pipe 4, avoid dust and steam in the outside air to enter into the siphunculus 8 and the region between the sleeve pipe 4, avoid leading to buffer structure and radial clamping structure to appear damaging because of external environment. For example, the inner tube 11 is made of PTEE material.
The nut 7 is rotated, the nut 7 and the screw effect of the screw 6 push the limiting plate 15 to slide on the inner side of the axial sliding groove 5, at the moment, the limiting plate 15 drives the inner ring 14 to pressurize the first spring 18, when the inner ring 14 moves, the inner ring 14 drives the arc-shaped sliding blocks 24 to gradually approach the ring plate 16 through the pull ropes 9, when the arc-shaped sliding blocks 24 pressurize the third spring 29, the concave arc clamping pieces 26 at the inner side ends of the arc-shaped sliding blocks 24 are gradually attached to the outer side surface of the through pipe 8 until the arc-shaped sliding blocks 24 enable the inner concave surfaces of the concave arc clamping pieces 26 to be closely attached to the outer side surface of the through pipe 8 through the elastic force of the second spring 27, so that the through pipe 8 with different pipe diameters can be clamped conveniently through the radial clamping structure, and the clamping effect of the through pipe 8 in the sleeve 4 is improved.
When the impact force of the through pipe 8 on the buffering ring piece 20 enables the buffering ring piece 20 to move towards the inner pipe 11, the elastic force of the connecting strip 19 can absorb a part of the impact force of the through pipe 8 on the buffering ring piece 20, the through pipe 8 with different pipe diameters is sleeved inside the sleeve 4 by utilizing the buffering ring pieces 20, and after the inner side end of the through pipe 8 corresponds to the inner side end of the inner pipe 11, the through pipe 8 is rotated, so that the inner side end of the inner pipe 11 is spirally sleeved on the surface of the inner side end of the through pipe 8.
When arc slider 24 moves to the crown plate 16 direction, arc slider 24 medial extremity is close to siphunculus 8 lateral surface gradually, and the concave arc clamping piece 26 of support 25 medial extremity laminates with siphunculus 8 surface gradually, utilize the elasticity of second spring 27 to make the interior concavity of concave arc clamping piece 26 extrude siphunculus 8 lateral surface, thereby utilize the extrusion friction force of the elasticity of a plurality of second springs 27 concave arc clamping piece 26 and siphunculus 8 lateral surface, reduce the siphunculus 8 to the impact force of inner tube 11 medial extremity, and simultaneously, thereby utilize a plurality of second springs 27 and the cooperation of concave arc clamping piece 26 to carry out the centre gripping to siphunculus 8, guarantee siphunculus 8 at the inside stability of sleeve pipe 4, improve siphunculus 8 medial extremity and inner tube 11's the degree of accuracy that corresponds.
When the inner ring 14 presses the first spring 18, the inner ring 14 drives the arc-shaped sliding block 24 to move on the surface of the inclined rod 28 through the pull rope 9, and at the moment, when the arc-shaped sliding block 24 slides on the surface of the inclined rod 28, the arc-shaped sliding block 24 presses the third spring 29, and the impact force of the through pipe 8 on the inner pipe 11 is further absorbed by the elastic force of the third spring 29.
The outer side surface of the arc-shaped sliding block 24 is not contacted with the inner side wall of the sleeve 4. Arc slider 24 is when the surface slip of down tube 28, when arc slider 24 is close to the crown plate 16, the concave arc clamping piece 26 of arc slider 24 inside part can be close to 8 lateral surfaces of siphunculus gradually, when arc slider 24 kept away from the crown plate 16, the concave arc clamping piece 26 of arc slider 24 inside part can keep away from 8 lateral surfaces of siphunculus gradually, utilize the sliding fit of arc slider 24 and down tube 28, make things convenient for the concave arc clamping piece 26 of arc slider 24 inboard to carry out the centre gripping to the siphunculus 8 of different pipe diameters.
The working principle of the invention is as follows:
referring to the attached drawings 1-7 of the specification, when a vortex flowmeter is used for detecting passing fluid, a measuring body 1 is required to be connected with a through pipe 8, after two sleeves 4 are respectively attached to the end faces of two flanges 2 correspondingly, screws 3 penetrate through holes in the surfaces of the flanges 2, the screws 3 are in threaded connection with the side edges of the sleeves 4, and therefore the sleeves 4 are fixedly connected with the flanges 2, and then the through pipe 8 is installed inside the sleeves 4.
When the through pipe 8 is installed, the end part of the through pipe 8 penetrates through the center of the rubber ring 10, the rubber ring 10 is sleeved on the surface of the through pipe 8 at the moment, the rubber ring 10 is tightly attached to the outer side surface of the through pipe 8 at the moment, the through pipe 8 is continuously pushed to move, the end part of the through pipe 8 sequentially passes through the center of the radial clamping structure and the center of the ring plate 16 at the moment, until the side surface of the end part of the through pipe 8 contacts with the buffering ring plate 20, the power entering the through pipe 8 impacts on the buffering ring plate 20 at the moment, the buffering ring plate 20 drives the inner ring 14 to move through the ring clamping plate 22 and the connecting strip 19 under the impact force of the through pipe 8 at the moment, the inner ring 14 extrudes the first spring 18 while the surface of the axial rod 17, the inner ring 14 drives the limiting plate 15 to slide on the inner side of the axial sliding groove 5, and the impact force of the through pipe 8 on the buffering ring plate 20 is primarily absorbed by the elasticity of the first spring 18.
When the impact force of the through pipe 8 on the buffering ring piece 20 causes the buffering ring piece 20 to move towards the inner pipe 11, the elastic force of the connecting strip 19 can absorb a part of the impact force of the through pipe 8 on the buffering ring piece 20. When the end side of the through pipe 8 contacts the rightmost buffering ring piece 20, the impact force of the through pipe 8 on the outer side of the rightmost buffering ring piece 20 enables the inner side of the rightmost buffering ring piece 20 to be gradually attached to the outer side of the buffering ring piece 20 in the middle, the inner side of the buffering ring piece 20 in the middle is gradually attached to the outer side of the leftmost buffering ring piece 20 under the impact force action of the through pipe 8 until the inner side of the leftmost buffering ring piece 20 is attached to the inner side end face of the inner pipe 11, the impact force of the through pipe 8 pushes the inner pipe 11 to move inside the flange 2 through the buffering ring pieces 20, the impact force of the through pipe 8 on the buffering ring piece 20 is absorbed by the elastic force of the first spring 18 and the connecting strip 19, and the impact damage of the through pipe 8 and the inner pipe 11 in connection is reduced.
Similarly, when the lateral side of the end of the through pipe 8 contacts the lateral side of the buffer ring sheet 20 at the middle part, and the lateral side of the end of the through pipe 8 contacts the inner surface of the leftmost buffer ring sheet 20 or the end of the through pipe 8 directly contacts the inner end of the through pipe 11, the through pipe 8 with different pipe diameters can be sleeved inside the sleeve 4 by using the buffer ring sheets 20, and after the medial end of the through pipe 8 corresponds to the medial end of the inner pipe 11, the through pipe 8 is rotated, so that the medial end of the inner pipe 11 is spirally sleeved on the medial end surface of the through pipe 8.
When the inner ring 14 presses the first spring 18, the inner ring 14 drives the arc-shaped sliding block 24 to move on the surface of the inclined rod 28 through the pull rope 9, and at the moment, when the arc-shaped sliding block 24 slides on the surface of the inclined rod 28, the arc-shaped sliding block 24 presses the third spring 29, and the impact force of the through pipe 8 on the inner pipe 11 is further absorbed by the elastic force of the third spring 29. When arc slider 24 moves to the crown plate 16 direction, arc slider 24 medial extremity is close to siphunculus 8 lateral surface gradually, and the concave arc clamping piece 26 of support 25 medial extremity laminates with siphunculus 8 surface gradually, utilize the elasticity of second spring 27 to make the interior concavity of concave arc clamping piece 26 extrude siphunculus 8 lateral surface, thereby utilize the extrusion friction force of the elasticity of a plurality of second springs 27 concave arc clamping piece 26 and siphunculus 8 lateral surface, reduce the siphunculus 8 to the impact force of inner tube 11 medial extremity, and simultaneously, thereby utilize a plurality of second springs 27 and the cooperation of concave arc clamping piece 26 to carry out the centre gripping to siphunculus 8, guarantee siphunculus 8 at the inside stability of sleeve pipe 4, improve siphunculus 8 medial extremity and inner tube 11's the degree of accuracy that corresponds.
After the through pipe 8 and the inner pipe 11 are installed, the elastic force of the first spring 18 and the connecting strip 19 rebounds to enable the through pipe 8 to rebound until the side face of the limiting plate 15 is attached to the outer side end of the axial sliding groove 5, the elastic force of the third spring 29 rebounds to enable the arc-shaped sliding block 24 to be gradually far away from the ring plate 16, and at the moment, the concave arc clamping piece 26 at the inner side portion of the arc-shaped sliding block 24 is separated from the outer side face of the through pipe 8. The nut 7 is rotated, the nut 7 and the screw effect of the screw 6 push the limiting plate 15 to slide on the inner side of the axial sliding groove 5, at the moment, the limiting plate 15 drives the inner ring 14 to pressurize the first spring 18, when the inner ring 14 moves, the inner ring 14 drives the arc-shaped sliding blocks 24 to be gradually close to the ring plate 16 through the pull ropes 9, when the arc-shaped sliding blocks 24 pressurize the third spring 29, the concave arc clamping pieces 26 at the inner side ends of the arc-shaped sliding blocks 24 are gradually attached to the outer side surfaces of the through pipes 8 until the arc-shaped sliding blocks 24 enable the inner concave surfaces of the concave arc clamping pieces 26 to be closely attached to the outer side surfaces of the through pipes 8 through the elastic force of the second springs 27, the radial clamping structure is convenient to clamp the through pipes 8 with different pipe diameters, and the clamping effect of the through pipes 8 inside the sleeve 4 is improved.
When the flow of the fluid is detected by using the measuring body 1, the fluid passes through the through pipe 8, the flange 2 and the measuring body 1 in sequence, and a detecting head in the measuring body 1 is convenient to detect the flow of the fluid. When measuring body 1 and examining the time measuring body 1, the fluid can be at 8 inside vibrations of siphunculus, it shakes to drive inner tube 11 through siphunculus 8 during the condition of fluid vibrations, the vibration range of siphunculus 8 can be reduced to the elastic effect of the inner tube 11 of PTEE material itself, a plurality of buffering rings 20 and connecting strip 19 cooperation and second spring 27, support 25 and concave arc clamping piece 26 cooperation, can further reduce siphunculus 8 at the inside vibration range of sleeve pipe 4, utilize connecting strip 19 and second spring 27 to absorb the power that siphunculus 8 vibrations produced, avoid vibrations to lead to inner tube 11 and siphunculus 8 to break away from, improve the stability of being connected of inner tube 11 and siphunculus 8, thereby avoid siphunculus 8's vibrations to transmit inside measuring body 1, avoid vibrations to lead to measuring body 1 and appear the damage.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A vortex shedding flowmeter is characterized in that: the device comprises a measuring body (1), two sleeves (4) and a through pipe (8), wherein flanges (2) are arranged at two opposite ends of the bottom of the measuring body (1), the end parts of the two sleeves (4) are respectively fixed on the end surfaces of the two flanges (2), a plurality of axial sliding grooves (5) are formed in the peripheral surface of one sleeve (4), a buffer structure is arranged in the axial sliding grooves, one end of the buffer structure is slidably inserted in the flange (2), an outer flange is arranged at one end, adjacent to the flange (2), of the sleeve (4) in a protruding mode along the radial direction, a plurality of screw rods (6) are arranged on the ring surface of the end part of the outer flange, and nuts (7) are spirally sleeved on the screw rods (6); siphunculus (8) are connected with flange (2) through buffer structure, and the inside radial clamping structure that is provided with of one end that flange (2) were kept away from in sleeve pipe (4), and the inboard clamp of radial clamping structure is tightly laminated on the outer peripheral face of siphunculus (8), and radial clamping structure passes through stay cord (9) and buffer structure linkage, and the tip department that flange (2) were kept away from in sleeve pipe (4) still is provided with rubber ring (10), and rubber ring (10) cover is located on the outer peripheral face of siphunculus (8).
2. The vortex shedding flowmeter of claim 1, wherein: buffer structure includes inner tube (11), inner tube (11) one end is in flange (2) inboard center department, inner tube (11) lateral surface is provided with a plurality of spacing (12), be provided with a plurality of spacing grooves (13) on flange (2) inboard lateral wall, spacing (12) are through spacing groove (13) and flange (2) sliding connection, the one end of siphunculus (8) is inserted and is located the one end inboard that flange (2) were kept away from in inner tube (11), and inner tube (11) and siphunculus (8) tip threaded connection.
3. The vortex shedding flowmeter of claim 2, wherein: the buffer structure further comprises an inner ring (14), the inner ring (14) is slidably arranged on the inner side of the sleeve (4), the peripheral surface of the inner ring (14) is fixedly connected with a plurality of limiting plates (15), the limiting plates (15) are respectively inserted into the axial sliding grooves (5), the screw (6) slidably penetrates through the limiting plates (15), and the screw cap (7) abuts against the side surface, far away from the flange (2), of the limiting plate (15).
4. The vortex shedding flowmeter of claim 3, wherein: the fixed crown plate (16) that is provided with of inside center department of sleeve pipe (4), crown plate (16) are in one side that flange (2) were kept away from in inner ring (14), be provided with a plurality of axial rod (17) on the annular end face of crown plate (16), axial rod (17) run through inner ring (14) with sliding, and axial rod (17) keep away from the one end and sleeve pipe (4) inside wall fixed connection of crown plate (16), the cover is equipped with first spring (18) on every axial rod (17), first spring (18) support hold between sleeve pipe (4) inside wall and inner ring (14).
5. The vortex shedding flowmeter of claim 4, wherein: the buffer structure further comprises a diaphragm (23) and a plurality of connecting strips (19), the diaphragm (23) is in a bowl shape with an opening at the bottom, a cavity of the diaphragm (23) faces the inner ring (14), the edge of the large-diameter end of the diaphragm (23) is connected to the inner ring (14), the edge of the small-diameter end of the diaphragm (23) is connected to the end of the inner tube (11), the connecting strips (19) are located on the inner side of the diaphragm (23) and arranged around the through tube (8), one end of each connecting strip (19) is fixedly connected with the end face of the inner tube (11), the other end of each connecting strip is fixedly connected with the inner side face of the inner ring (14), a plurality of groups of ring clamping sheets (22) and a plurality of buffer ring sheets (20) are arranged on the connecting strips (19), a through groove (21) is formed on the inner side of each group of ring clamping sheets (22), the outer peripheral edge of each buffer ring sheet (20) is clamped in the through groove (21), and the outer diameter of each ring clamping sheet (22) is equal to the outer diameter of each buffer ring sheet (20), the inner diameter of the ring clamping piece (22) is larger than that of the buffering ring piece (20); the inner diameters of the buffer ring pieces (20) are gradually reduced along the direction towards the inner pipe (11), the end part of the through pipe (8) is provided with a small-diameter insertion end, one end part of the small-diameter insertion end, which is far away from the flange (2), is provided with a step ring part, and the small-diameter insertion end penetrates through the centers of the buffer ring pieces (20).
6. The vortex shedding flowmeter of claim 5, wherein: radial clamping structure includes a plurality of arc slider (24), the internal perisporium evenly distributed of sleeve pipe (4) is followed in a plurality of arc slider (24), the relative both ends of stay cord (9) are connected respectively on arc slider (4) and inner ring (14), arc slider (24) medial surface is connected with support (25), support (25) lower extreme is provided with concave arc clamping piece (26), the interior concave surface and siphunculus (8) outer peripheral face of concave arc clamping piece (26) correspond the laminating, arc slider (24) inside is provided with second spring (27), support (25) medial surface is through second spring (27) and arc slider (24) inside wall fixed connection.
7. The vortex shedding flowmeter of claim 6, wherein: the one end anchor ring that the crown plate (16) deviates from inner ring (14) is provided with a plurality of down tube (28), the one end inside wall fixed connection of flange (2) is kept away from with sleeve pipe (4) to the other end of a plurality of down tube (28), distance between down tube (28) and siphunculus (8) axis reduces along the direction towards flange (2) gradually, per two down tube (28) set up to a set of, all cup jointed third spring (29) on every group down tube (28), third spring (29) support hold between crown plate (16) and arc slider (24).
8. The vortex shedding flowmeter of claim 7, wherein: each arc-shaped sliding block (24) is sleeved on one group of inclined rods (28) in a sliding mode, and an isolation gap is formed between the outer peripheral surface of each arc-shaped sliding block (24) and the inner side wall of the sleeve (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111339579.0A CN114061671B (en) | 2021-11-12 | 2021-11-12 | Vortex street flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111339579.0A CN114061671B (en) | 2021-11-12 | 2021-11-12 | Vortex street flowmeter |
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| CN114061671A true CN114061671A (en) | 2022-02-18 |
| CN114061671B CN114061671B (en) | 2022-08-09 |
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| CN113396209A (en) * | 2019-01-04 | 2021-09-14 | 奥瑞生物技术有限公司 | Cell processing apparatus, cell processing system, and method of using the same |
| CN113514355A (en) * | 2021-04-23 | 2021-10-19 | 中国石油大学(华东) | Resonance bending fatigue testing machine for oil-gas pipe column |
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2021
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| JPH04312284A (en) * | 1991-04-10 | 1992-11-04 | Kurimoto Ltd | Structure, processing method, and device of punching position for branching of cast iron pipe |
| EP1323611A1 (en) * | 2001-12-27 | 2003-07-02 | SMW Spezialmaschinen und Werkzeugbau GmbH & Co. KG | Buffer, in particular for railway vehicles |
| CN207423277U (en) * | 2018-03-12 | 2018-05-29 | 天津市旭永诚科技有限公司 | A kind of convenient vortex-shedding meter of mounting means |
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| CN114061671B (en) | 2022-08-09 |
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