CN113670392B - Vortex street flowmeter - Google Patents
Vortex street flowmeter Download PDFInfo
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- CN113670392B CN113670392B CN202110859967.5A CN202110859967A CN113670392B CN 113670392 B CN113670392 B CN 113670392B CN 202110859967 A CN202110859967 A CN 202110859967A CN 113670392 B CN113670392 B CN 113670392B
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- inner tube
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- storage sleeve
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- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000004804 winding Methods 0.000 claims description 36
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
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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
- G01F15/06—Indicating or recording devices
- G01F15/061—Indicating or recording devices for remote indication
-
- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The application relates to a vortex shedding flowmeter, which belongs to the technical field of flowmeters and comprises a test tube connected with a pipeline, a sensor positioned in the test tube and used for testing flow, a display used for displaying flow data and a transmission line connected between the sensor and the display, wherein a lifting device used for adjusting the height of the display is arranged between the display and the test tube, the lifting device comprises an outer tube, an inner tube and a threaded sleeve, the bottom of the outer tube is fixedly connected with the test tube, the threaded sleeve is rotationally connected with the outer tube, threads are machined on the outer wall of the inner tube, the inner tube is positioned in the outer tube and is in threaded connection with the threaded sleeve, and the display is arranged above the inner tube. The application has the effect of facilitating the observation of the display by the staff.
Description
Technical Field
The application relates to the field of flow meters, in particular to a vortex shedding flow meter.
Background
The vortex street flowmeter is a volume flowmeter which is produced according to the Karman vortex street principle and used for measuring the volume flow of gas, steam or liquid, the volume flow or mass flow of standard conditions. The flow meter is mainly used for measuring the flow of industrial pipeline medium fluid, such as various mediums including gas, liquid, steam and the like.
Referring to fig. 1 and 2, the vortex shedding flowmeter in the prior art includes a test tube 1 for connecting a pipe, a sensor 11 for testing a flow rate located in the test tube 1, a display 12 for displaying flow rate data, and a transmission line 13 connected between the sensor 11 and the display 12, a fixed tube 9 is fixedly connected between the test tube 1 and the display 12, and the transmission line 13 is located in the fixed tube 9.
In view of the above-mentioned related art, the inventor believes that when a worker performs a measurement work, the worker is required to perform data recording by observing the display, but the conventional display has a defect that it is inconvenient for the worker to observe the display due to the low height of the display.
Disclosure of Invention
In order to achieve the effect of facilitating staff to observe a display, the application provides a vortex shedding flowmeter.
The vortex shedding flowmeter provided by the application adopts the following technical scheme:
The utility model provides a vortex shedding flowmeter, including being used for the test tube that is connected with the pipeline, be located the sensor that is used for testing flow in the test tube, be used for showing the display of flow data and connect the transmission line between sensor and display, be provided with the elevating gear who is used for adjusting display height between display and test tube, elevating gear includes the outer tube, inner tube and thread bush, the bottom and the test tube fixed connection of outer tube, thread bush and outer tube rotate to be connected, the outer wall processing of inner tube is threaded, the inner tube is located the inside of outer tube and with thread bush threaded connection, the top at the inner tube is installed to the display.
Through adopting above-mentioned technical scheme, when the staff is carrying out measurement work, with the both ends of pipe connection at the test tube, then rotate the thread bush, under the threaded connection effect between thread bush and the inner tube, make the inner tube stretch out from the inside of outer tube to drive the display and carry out altitude mixture control, until with the display adjustment to suitable height. Through the structure, the height adjustment of the display is realized, the convenience is provided for the staff to observe the display data,
Optionally, the top of thread bush has set firmly first bevel gear, and the transmission line runs through first bevel gear, and first bevel gear meshing has the second bevel gear, and the second bevel gear wears to be equipped with the connecting rod along self axis of rotation direction, connecting rod and second bevel gear fixed connection, and the connecting rod runs through the outer tube and in the outside fixedly connected with hand wheel of outer tube, connecting rod and outer tube rotation connection.
Through adopting above-mentioned technical scheme, when the staff need adjust the inner tube, the staff only need rotate the hand wheel, drives the second bevel gear through the hand wheel and rotates, and the second bevel gear rethread is driving the thread bush rotation with first bevel gear's meshing to alright make the inner tube stretch out or receive in the outer tube.
Optionally, dodge the groove has been seted up along self length direction in one side that is close to the second bevel gear to the inner tube, and the connecting rod stretches into the inside of inner tube from dodging the inslot, and the connecting rod wears to be equipped with the winding roller in the inside of inner tube, and connecting rod and winding roller fixed connection, and the transmission line penetrates from the one end that the connecting rod deviates from the second bevel gear and wears out from the circumference lateral wall of connecting rod and twines on the winding roller.
Through adopting above-mentioned technical scheme, the staff is driving the winding roller and is rotating together through the connecting rod when rotating the hand wheel, when the inside of inner tube from the outer tube stretches out, makes the transmission line twine on the winding roller, when the inside of inner tube income to the outer tube, makes the transmission line emit from the winding roller to realized when adjusting inner tube height, also accomplished the receive and release to the transmission line.
Optionally, the spacing groove has been seted up along self length direction to one side that the inner tube was deviating from the groove of dodging, and the inner wall of outer tube has set firmly the stopper, and the stopper is located the spacing inslot, and the lateral wall and the inner tube butt of both sides of stopper both sides in the both sides inner wall of spacing groove department.
Through adopting above-mentioned technical scheme, the stopper has played the restriction effect to the inner tube in the spacing inslot, avoids the staff to drive the inner tube and rotate together when carrying out the rotation to the thread bush, has guaranteed that the inner tube can be smooth stretch out or withdraw along the length direction of outer tube.
Optionally, be provided with the adjusting device who is used for the distance between horizontal adjustment display to the inner tube top between the top of inner tube and the display, adjusting device is including accomodating cover and adjusting sleeve, and the adjusting sleeve is located accomodating the inside of cover and along the direction of keeping away from the inner tube tip from accomodating the inside roll-off of cover, and the display is rotated with the top that the adjusting sleeve deviates from accomodating cover one end and is connected, is provided with the receipts line roller that is used for winding the transmission line in accomodating the cover, and the both ends of receipts line roller are rotated with the inner wall of accomodating the cover and are connected, and the one end of receipts line roller is provided with and is used for driving receipts line roller pivoted wind spring.
Through adopting above-mentioned technical scheme, after the staff highly adjusts to suitable position to the display, the staff can take out or withdraw the adjusting sleeve from the inside of accomodating the cover, accomplishes the adjustment to display horizontal position, when taking out the adjusting sleeve from the inside of accomodating the cover, the take-up roller rotates and makes the transmission line emit, when accomodating the cover to the adjusting sleeve in, the wind spring drives the rotation of take-up roller to twine the transmission line to on self lateral wall.
Optionally, the fixed orifices that runs through self has been seted up to the lateral wall that the inner tube top one end was kept away from to the accommodation sleeve, and the locating hole that runs through self lateral wall of a plurality of has been seted up along self length direction to the adjustment sleeve, and after one of them locating hole was aligned with the fixed orifices, peg graft between fixed orifices and locating hole has the locating pin.
Through adopting above-mentioned technical scheme, when adjusting between adjusting sleeve and the storage cover, take out the inside of adjusting sleeve from the storage cover to make fixed orifices and locating hole align, insert the locating pin again between fixed orifices and the locating hole, thereby provide good stability for adjusting between cover and the storage cover.
Optionally, the bottom of the one end of the storage sleeve away from the display is rotationally connected with the top of the inner tube.
Through adopting above-mentioned technical scheme, the staff can rotate between storage cover and the inner tube, and then has played the effect of regulation to the direction of display orientation.
Optionally, the top of inner tube has set firmly first baffle, and the bottom of receiving the cover has set firmly the second baffle.
Through adopting above-mentioned technical scheme, make the biggest angle of pivoted between accomodating cover and the inner tube top not surpass 360 degrees, avoid because of accomodating the cover and the damage is caused to the transmission line to the pivoted number of turns is too much between the inner tube top to play the effect of protection for the transmission line.
Optionally, the inner wall of accomodating the cover sets up the slide along self length direction, and the slide does not run through accomodating the cover and be close to the tip of display one end, and the lateral wall that the adjusting sleeve deviates from display one end has set firmly the slider with slide slip adaptation, and the slider is located the slide and slides along the length direction of accomodating the cover.
Through adopting above-mentioned technical scheme, make the slider slide in the slide, the slide has played the restriction effect to the gliding furthest distance of slider simultaneously to be difficult for taking place to break away from between messenger's adjusting sleeve and the receiving sleeve.
Optionally, the bottom of inner tube has set firmly the fixed plate, and the fixed plate is located the outer tube and slides along the length direction of outer tube, and the fixed plate is located the below of thread bush, and the fixed plate size is greater than the internal diameter of thread bush.
Through adopting above-mentioned technical scheme, the fixed plate has played the effect of restriction to the max distance that the inner tube upwards moved, avoids taking place to break away from between inner tube and the outer tube.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The staff can extend the inner tube from the inner part of the outer tube by rotating the hand wheel, so that the height of the display is adjusted;
2. The staff stretches out the adjusting sleeve from the inside of the containing sleeve, so that the horizontal position of the display can be adjusted;
3. The top of the storage sleeve and the inner tube are rotated, so that the direction of the display is adjusted.
Drawings
FIG. 1 is a schematic view of a vortex shedding flowmeter of the prior art;
FIG. 2 is a cross-sectional view of a vortex shedding flowmeter of the prior art;
FIG. 3 is a schematic view of a vortex shedding flowmeter according to an embodiment of the present application;
FIG. 4 is a partial cross-sectional view of an embodiment of the application showing a lifting device;
FIG. 5 is an enlarged schematic view of a portion A of FIG. 4;
FIG. 6 is a partial schematic view showing the structure between the wire winding roller and the guide sleeve in an embodiment of the present application;
FIG. 7 is a schematic view of a part of a structure of an adjusting device according to an embodiment of the present application;
FIG. 8 is a partial cross-sectional view showing the internal structure of an adjusting device according to an embodiment of the present application;
FIG. 9 is a partial schematic view showing a connection structure between the receiving jacket and the inner tube in an embodiment of the present application;
Fig. 10 is a schematic structural diagram of a take-up roller according to an embodiment of the present application.
Reference numerals illustrate: 1. a test tube; 11. a sensor; 12. a display; 13. a transmission line; 2. a lifting device; 21. an outer tube; 211. a limiting block; 22. an inner tube; 221. an avoidance groove; 222. a limit groove; 223. a first baffle; 23. a thread sleeve; 3. an adjusting device; 31. a storage sleeve; 311. a fixing hole; 312. a positioning pin; 313. a slideway; 314. a second baffle; 32. an adjusting sleeve; 321. positioning holes; 322. a slide block; 4. a first bevel gear; 5. a second bevel gear; 51. a connecting rod; 511. a hand wheel; 6. a wire winding roller; 7. a wire winding roller; 71. a coil spring; 8. a fixing plate; 9. a fixed tube; 10. a guide sleeve; 101. a butt joint rod; 102. a telescopic rod; 103. a mounting plate; 104. a spring; 105. a cam; 106. a linkage rod; 107. a third bevel gear; 108. a fourth bevel gear; 109. and a reinforcing rod.
Detailed Description
The application is described in further detail below with reference to fig. 3-10.
The embodiment of the application discloses a vortex shedding flowmeter.
Referring to fig. 3 and 4, a vortex shedding flowmeter includes a test tube 1 for connection to a pipe, a sensor 11 for testing a flow rate located in the test tube 1, a display 12 for displaying flow rate data, and a transmission line 13 connected between the sensor 11 and the display 12. The display 12 is positioned above the test tube 1, and a lifting device 2 for adjusting the height of the display 12 and a horizontal position adjusting device 3 for adjusting the display 12 are arranged between the display 12 and the test tube 1. When a worker needs to perform flow test on the pipeline, the pipeline is arranged at two ends of the test tube 1, then the worker adjusts the display 12 to a proper height through the adjustment of the lifting device 2, then adjusts the display 12 to a proper horizontal position through the adjustment device 3, the sensor 11 transmits data to the display 12 in the test tube 1 through the transmission line 13, and the worker reads the data through the display 12 and records the data. With the above structure, the height and horizontal position of the display 12 can be adjusted, thereby providing convenience for the staff to observe the display 12.
Referring to fig. 4 and 5, the lifting device 2 includes an outer tube 21, an inner tube 22 and a thread bush 23, the bottom of the outer tube 21 is fixedly connected with the top of the test tube 1, the inner tube 22 is located inside the outer tube 21 and extends outwards from the top of the outer tube 21, the transmission line 13 is located inside the outer tube 21 and the inner tube 22, the thread bush 23 is located inside the outer tube 21, the thread bush 23 is rotationally connected with the inner wall of the outer tube 21 far away from one end of the test tube 1, the circumferential outer wall of the inner tube 22 is threaded and is in threaded connection with the thread bush 23, a first bevel gear 4 is fixedly arranged at the top of the thread bush 23, the transmission line 13 penetrates through the first bevel gear 4 and the thread bush 23, a second bevel gear 5 is meshed with the first bevel gear 4 inside the outer tube 21, a connecting rod 51 is fixedly arranged along the rotation axis direction of the second bevel gear 5, and one end of the connecting rod 51 extends from the inside of the outer tube 21 and is fixedly provided with a hand wheel 511. The inner wall of one side of the outer tube 21 deviating from the hand wheel 511 is fixedly provided with a limiting block 211, the inner tube 22 is provided with a limiting groove 222 along the length direction thereof, the limiting block 211 is positioned in the limiting groove 222, the side walls of the two sides of the limiting block 211 are abutted with the inner walls of the two sides of the inner tube 22 at the limiting groove 222, and the limiting block 211 is in sliding connection with the inner tube 22 along the length direction of the limiting groove 222. When the worker needs to extend or retract the inner tube 22 from the inside of the outer tube 21, the hand wheel 511 can be rotated, the hand wheel 511 drives the second bevel gear 5 to rotate through the connecting rod 51, the threaded sleeve 23 is rotated through the engagement of the second bevel gear 5 and the first bevel gear 4, the threaded sleeve 23 is connected with the inner tube 22 through threads, and the limiting block 211 slides in the limiting groove 222, so that the inner tube 22 extends or retracts in the outer tube 21, and the height of the display 12 is adjusted.
The bottom of inner tube 22 has set firmly fixed plate 8, and fixed plate 8 slides along the length direction of outer tube 21 in the inside of outer tube 21, and the size of fixed plate 8 is greater than thread bush 23 internal diameter size, and transmission line 13 runs through fixed plate 8. The maximum distance of upward adjustment of the inner tube 22 is limited by the fixing plate 8, and detachment between the inner tube 22 and the outer tube 21 is avoided when the height of the inner tube 55 is adjusted.
Referring to fig. 5, the inner tube 22 is provided with a avoiding groove 221 along its length direction on the side opposite to the limit groove 222, one end of the connecting rod 51, which is away from the hand wheel 511, extends into the inner tube 22 from the avoiding groove 221, the connecting rod 51 is provided with a winding roller 6 in the inner tube 22, the winding roller 6 is fixedly connected with the connecting rod 51, the winding roller 6 is located above the thread bush 23, and the transmission line 13 penetrates from the side wall of the connecting rod 51 from the end of the connecting rod 51, which is away from the hand wheel 511, and penetrates and winds onto the circumferential side wall of the winding roller 6. When the worker stretches the inner tube 22 from the inside of the outer tube 21, the winding roller is driven to rotate anticlockwise by the wheel 511, so that the transmission line 13 is discharged from the winding roller 6; when the worker takes in the inner tube 22 into the outer tube 21, the winding roller 6 is rotated clockwise by the hand wheel 511, and the transmission line 13 is wound around the winding roller 6. Thus, by the above structure, the winding and unwinding work of the winding roller 6 on the transmission line 13 is automatically completed while the height of the inner tube 22 is adjusted.
Referring to fig. 5 and 6, a guide sleeve 10 for guiding a transmission line 13 is disposed above a winding roller 6, the transmission line 13 passes through the guide sleeve 10, a supporting rod 101 is fixedly disposed on one side of the guide sleeve 10, a telescopic rod 102 is disposed between the other side of the guide sleeve 10 and an outer tube 21, the telescopic rod 102 comprises an inner rod and an outer rod, the inner rod extends out of the outer rod and is slidingly connected with the inner rod, one end of the outer rod is fixedly connected with the inner wall of the outer tube 21, one end of the inner tube 22 is fixedly connected with the side wall of the guide sleeve 10, a mounting plate 103 is arranged on the outer rod in a penetrating manner, the outer rod is fixedly connected with the mounting plate 103, a spring 104 is arranged on the inner rod in a penetrating manner, and two ends of the spring 104 are respectively fixedly connected with the mounting plate 103 and the side wall of the guide sleeve 10. The guide sleeve 10 is provided with a cam 105 on one side of the abutting rod 101, the rotation axis of the cam 105 is parallel to the length direction of the inner tube 22, a linkage rod 106 is fixedly arranged on the lower surface of the cam 105 along the length direction of the inner rod, a third bevel gear 107 is fixedly arranged at one end of the linkage rod 106, which is away from the cam 105, and a fourth bevel gear 108 meshed with the third bevel gear 107 is fixedly arranged at the end of the winding roller. The top of stopper 211 has set firmly reinforcing rod 109, and reinforcing rod 109 stretches out into the inside of interior pipe 22 from spacing groove 222, and the gangbar 106 runs through reinforcing rod 109 and just is swivelling joint between the two. When the winding roller 6 is rotated by a worker, the linkage rod 106 is driven to rotate through the engagement between the third bevel gear 107 and the fourth bevel gear 108, the cam 105 is driven to rotate by the linkage rod 106, the guide sleeve 10 reciprocates between the cam 105 and the spring 104 along the axis direction of the winding roller 6 by the rotation of the cam 105 and the elasticity of the spring 104, and then the transmission line 13 is guided, so that the transmission line 13 can be orderly distributed on the winding roller 6.
Referring to fig. 7 and 8, the adjusting device 3 includes a receiving sleeve 31 and an adjusting sleeve 32, the bottom of one end of the receiving sleeve 31 is rotatably connected with the top of the inner tube 22, the inside of the receiving sleeve 31 is communicated with the inside of the inner tube 22, the transmission line 13 extends into the inside of the receiving sleeve 31 from the top of the inner tube 22, the adjusting sleeve 32 is located in the receiving sleeve 31 and horizontally slides out from the top of the receiving sleeve 31 away from the top of the inner tube 22, the display 12 is rotatably connected with the adjusting sleeve 32 away from the top of one end of the receiving sleeve 31, a fixing hole 311 penetrating through the side wall of the receiving sleeve 31 is formed in the side wall of the end of the receiving sleeve 31 away from the top of the inner tube 22, a plurality of positioning holes 321 penetrating through the side wall of the adjusting sleeve 32 are uniformly distributed along the length direction of the adjusting sleeve 32, and the positioning holes 321 and the fixing holes 311 are located on the same side. After any one of the positioning holes 321 is aligned with the fixing hole 311, a positioning pin 312 is inserted between the positioning hole 321 and the fixing hole 311. When the operator adjusts the horizontal position of the display 12, the adjusting sleeve 32 can be retracted into the accommodating sleeve 31 or extend out of the accommodating sleeve 31, and one of the positioning holes 321 is aligned with the fixing hole 311, and the positioning pin 312 is inserted between the fixing hole 311 and the positioning hole 321, so as to ensure the stability between the adjusting sleeve 32 and the accommodating sleeve 31, and simultaneously realize the adjustment of the horizontal position of the display 12.
Referring to fig. 7 and 9, a first baffle 223 is fixedly provided at the top of the inner tube 22, and a second baffle 314 is fixedly provided at the bottom surface of the receiving sleeve 31 near the first end of the top of the inner tube 22. Because the accommodating sleeve 31 is rotationally connected with the inner tube 22, the angle of the display 12 can be adjusted, and meanwhile, the first baffle 223 and the second baffle 314 have a limiting function on the maximum angle of the accommodating sleeve 31, so that the maximum angle of the accommodating sleeve 31 and the inner tube 22 is not more than 360 degrees, and the damage to the transmission line 13 caused by excessive rotating turns between the accommodating sleeve 31 and the inner tube 22 is avoided.
Referring to fig. 8, a slider 322 is fixed at the top of the end of the adjusting sleeve 32 away from the display 12, a slide 313 slidably matched with the slider 322 is provided on the inner top wall of the accommodating sleeve 31 along the length direction of the inner wall, and the slide 313 does not penetrate through the end of the accommodating sleeve 31 away from the top end of the inner tube 22. The sliding block 322 slides in the slide way 313, so that the maximum distance of the adjusting sleeve 32 extending from the accommodating sleeve 31 is limited, and the adjusting sleeve 32 and the accommodating sleeve 31 are prevented from being separated due to the overlong extending length of the adjusting sleeve 32.
Referring to fig. 8 and 10, the inside of the receiving jacket 31 is provided with a take-up roller 7 for winding the transmission line 13, the take-up roller 7 is rotatably connected with the inner wall of the receiving jacket 31, and the take-up roller 7 is located directly on the inner tube 22, the transmission line 13 penetrates into the inside of the take-up roller 7 along the axial direction of the take-up roller 7 and penetrates out from the side wall of the take-up roller 7, the transmission line 13 is wound onto the circumferential side wall of the take-up roller 7, and one end of the take-up roller 7 is provided with a coil spring 71 for driving the take-up roller to rotate. When the adjusting sleeve 32 is drawn out from the inside of the housing sleeve 31, the display 12 drives the transmission line 13 to be discharged from the take-up roller 7 and rotates the take-up roller 7, and when the adjusting sleeve 32 is retracted into the housing sleeve 31, the coil spring 71 drives the take-up roller 7 to automatically rotate reversely to wind the transmission line 13 onto the circumferential side wall thereof. With the structure, the winding and unwinding work of the winding roller 7 on the transmission line 13 is automatically completed when the horizontal position of the display 12 is adjusted.
The implementation principle of the vortex shedding flowmeter provided by the embodiment of the application is as follows: the pipeline is connected to the two ends of the test tube 1, a worker rotates the hand wheel 511 again to adjust the height of the display 12, meanwhile, the hand wheel 511 drives the winding roller 6 to rotate, the winding and unwinding work of the transmission line 13 during the height adjustment of the display 12 is achieved, then the worker withdraws or withdraws the adjusting sleeve 32 from the storage sleeve 31, the coil spring 71 drives the winding roller 7 to rotate, and accordingly the winding and unwinding work of the transmission line 13 during the horizontal position adjustment of the display 12 is achieved. Through the structure, the height and horizontal position of the display 12 are adjusted, and convenience is provided for workers to observe the display 12.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (6)
1. A vortex shedding flowmeter, characterized in that: the device comprises a test tube (1) connected with a pipeline, a sensor (11) positioned in the test tube (1) and used for testing flow, a display (12) used for displaying flow data and a transmission line (13) connected between the sensor (11) and the display (12), wherein a lifting device (2) used for adjusting the height of the display (12) is arranged between the display (12) and the test tube (1), the lifting device (2) comprises an outer tube (21), an inner tube (22) and a thread bush (23), the bottom of the outer tube (21) is fixedly connected with the test tube (1), the thread bush (23) is rotationally connected with the outer tube (21), threads are machined on the outer wall of the inner tube (22), the inner tube (22) is positioned inside the outer tube (21) and is in threaded connection with the thread bush (23), and the display (12) is arranged above the inner tube (22); the top of the thread bush (23) is fixedly provided with a first bevel gear (4), the transmission line (13) penetrates through the first bevel gear (4), the first bevel gear (4) is meshed with a second bevel gear (5), the second bevel gear (5) is penetrated with a connecting rod (51) along the direction of the rotation axis of the second bevel gear (5), the connecting rod (51) is fixedly connected with the second bevel gear (5), the connecting rod (51) penetrates through the outer pipe (21) and is fixedly connected with a hand wheel (511) at the outer side of the outer pipe (21), and the connecting rod (51) is rotationally connected with the outer pipe (21); an avoidance groove (221) is formed in one side, close to the second bevel gear (5), of the inner tube (22) along the length direction of the inner tube, a connecting rod (51) stretches into the inner tube (22) from the avoidance groove (221), a winding roller (6) is arranged in the inner tube (22) in a penetrating mode, the connecting rod (51) is fixedly connected with the winding roller (6), a transmission line (13) penetrates from one end, deviating from the second bevel gear (5), of the connecting rod (51), penetrates from the circumferential side wall of the connecting rod (51) and is wound on the winding roller (6); an adjusting device (3) for horizontally adjusting the distance between the display (12) and the top of the inner tube (22) is arranged between the top of the inner tube (22) and the display (12), the adjusting device (3) comprises a storage sleeve (31) and an adjusting sleeve (32), the adjusting sleeve (32) is positioned in the storage sleeve (31) and slides out of the storage sleeve (31) along the direction away from the end of the inner tube (22), the display (12) and the adjusting sleeve (32) are rotatably connected with the top of one end, deviating from the storage sleeve (31), of the storage sleeve (31), a take-up roller (7) for winding a transmission line (13) is arranged in the storage sleeve (31), two ends of the take-up roller (7) are rotatably connected with the inner wall of the storage sleeve (31), and one end of the take-up roller (7) is provided with a coil spring (71) for driving the take-up roller (7) to rotate; the inner wall of the storage sleeve (31) is provided with a slide way (313) along the length direction of the storage sleeve, the slide way (313) does not penetrate through the end part of the storage sleeve (31) close to one end of the display (12), the side wall of one end of the adjusting sleeve (32) deviating from the display (12) is fixedly provided with a sliding block (322) which is matched with the slide way (313) in a sliding manner, and the sliding block (322) is located in the slide way (313) and slides along the length direction of the storage sleeve (31).
2. A vortex shedding flowmeter as claimed in claim 1, wherein: limiting grooves (222) are formed in one side, away from the avoidance grooves (221), of the inner tube (22) along the length direction of the inner tube, limiting blocks (211) are fixedly arranged on the inner wall of the outer tube (21), the limiting blocks (211) are located in the limiting grooves (222), and the side walls on two sides of the limiting blocks (211) are in butt joint with the inner walls of the two sides of the inner tube (22) at the limiting grooves (222).
3. A vortex shedding flowmeter as claimed in claim 1, wherein: the side wall of the storage sleeve (31) far away from one end of the top of the inner tube (22) is provided with a fixing hole (311) penetrating through the storage sleeve, the adjusting sleeve (32) is provided with a plurality of positioning holes (321) penetrating through the side wall of the storage sleeve along the length direction of the storage sleeve, and after one of the positioning holes (321) is aligned with the fixing hole (311), a positioning pin (312) is inserted between the fixing hole (311) and the positioning hole (321).
4. A vortex shedding flowmeter as claimed in claim 1, wherein: the bottom of one end, far away from the display (12), of the storage sleeve (31) is rotationally connected with the top of the inner tube (22).
5. A vortex shedding flowmeter as claimed in claim 4, wherein: the top of the inner tube (22) is fixedly provided with a first baffle plate (223), and the bottom of the storage sleeve (31) is fixedly provided with a second baffle plate (314).
6. A vortex shedding flowmeter as claimed in claim 1, wherein: the bottom of inner tube (22) has set firmly fixed plate (8), and fixed plate (8) are located in outer tube (21) and slide along the length direction of outer tube (21), and fixed plate (8) are located the below of thread bush (23), and the size of fixed plate (8) is greater than the internal diameter of thread bush (23).
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| CN114252112A (en) * | 2021-12-15 | 2022-03-29 | 无锡欧百仪表科技有限公司 | Vortex flowmeter with high heat dissipation performance |
| CN115435851B (en) * | 2022-09-02 | 2024-03-22 | 上海肯特仪表股份有限公司 | Temperature and pressure integrated electromagnetic flowmeter |
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