CN217542011U - Anti-seismic vortex shedding flowmeter - Google Patents

Abstract

The utility model belongs to the technical field of the vortex shedding flowmeter technique and specifically relates to an antidetonation type vortex shedding flowmeter, including the table body, the intermediate position on table body top is connected with the gauge stick, the top of gauge stick is connected with the amplifier, the equal swing joint in inside at table body both ends has the connecting pipe, the connecting pipe is located the outside one end of table body is connected with the flange, the connecting pipe is located install spacing ring two on the lateral wall of the inside one end of table body, all install spacing ring one on the inside wall at table body both ends, adjacent spacing ring one with be provided with the buffering shock attenuation between the spacing ring two, the gauge stick with be provided with the supporting mechanism who is used for the stable support gauge stick between the table body, can improve the support stability to the gauge stick through the supporting mechanism who sets up, avoid causing the not hard up potential safety hazards such as slope of gauge stick because of vibrations, improve vortex shedding flowmeter's measurement accuracy, improve life.

Description

Anti-seismic vortex shedding flowmeter

Technical Field

The utility model relates to a vortex flowmeter technical field specifically is an antidetonation type vortex flowmeter.

Background

The vortex street flowmeter is produced based on Karman vortex street principle and is used mainly in measuring the flow rate of industrial medium fluid, such as gas, liquid, steam and other medium. The vortex shedding flowmeter is characterized by small pressure loss, wide measuring range and high precision, and is hardly influenced by parameters such as fluid density, pressure, temperature, viscosity and the like when measuring the volume flow of working conditions.

Chinese patent application No.: 202021095093.8 discloses an antidetonation type vortex shedding flowmeter, through setting up outer tube, connecting plate, first spring, deflector, guide bar, second spring and spacing ring for the flowmeter can effectively reduce the vibrations between outer tube and the person in charge, thereby reduces the influence of external vibrations to the flowmeter main part, thereby has improved the practicality of flowmeter.

Although the above application can reduce the influence of external vibration on the flowmeter main body, there are some disadvantages: the meter rod is inserted and arranged on the top end of the meter body in a bolt mode, so that the potential safety hazards such as looseness, inclination and the like are easily caused by the meter rod under the condition that the vortex shedding flowmeter is vibrated, measurement data is not accurate, and the problem is solved by the anti-vibration vortex shedding flowmeter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an antidetonation type vortex street flowmeter to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an antidetonation type vortex street flowmeter, includes the table body, the intermediate position on table body top is connected with the table pole, the top of table pole is connected with the amplifier, the equal swing joint in inside at table body both ends has the connecting pipe, the connecting pipe is located the external one end of table is connected with the flange, the connecting pipe is located install spacing ring two on the lateral wall of the internal one end of table, all install spacing ring one on the inside wall at table body both ends, it is adjacent spacing ring one with be provided with the buffering bumper shock absorber between the spacing ring two, the table pole with be provided with the supporting mechanism who is used for the stable support table pole between the table body.

Preferably, the inner wall of the first limit ring is provided with a first dynamic seal matched with the connecting pipe, and the outer wall of the second limit ring is provided with a second dynamic seal matched with the watch body.

Preferably, the inside of the watch body is close to the end part of the connecting pipe and is provided with a limiting baffle which is a circular plate, the outer wall of the limiting baffle is fixedly connected with the inner wall of the watch body, and a through hole for fluid to pass through is formed in the limiting baffle.

Preferably, a buffer pad is arranged on one side of the limiting baffle close to the connecting pipe.

Preferably, the supporting mechanism comprises a positioning ring sleeved on the meter rod, two fixing rings fixed on the meter body and two connecting rods used for connecting the fixing rings and the positioning ring;

the positioning ring comprises a first hoop and a second hoop, the first hoop and the second hoop are symmetrically arranged on two sides of the gauge rod, and two ends of the first hoop and two ends of the second hoop are connected and fixed through a threaded connecting piece;

the fixed ring is composed of a clamp III and a clamp IV, the clamp III and the clamp IV are symmetrically arranged at the upper end and the lower end of the meter body, and the clamp III and the two ends of the clamp IV are fixedly connected through a threaded connecting piece II.

Preferably, the inner walls of the first hoop, the second hoop, the third hoop and the fourth hoop are provided with anti-skid pads.

Compared with the prior art, the beneficial effects of the utility model are that:

among this antidetonation type vortex flowmeter, be connected vortex flowmeter and fluid pipeline through the flange, when vibrations appear, vibrations transmit to buffering damper on to drive the table body and slide on two connecting pipes, cushion the shock attenuation, can improve the support stability to the gauge stick through the supporting mechanism who sets up, avoid causing the not hard up potential safety hazards such as slope of gauge stick because of vibrations, improve vortex flowmeter's measurement accuracy, improve life.

Drawings

FIG. 1 is a schematic view of the overall structure of an anti-seismic vortex shedding flowmeter of the present invention;

FIG. 2 is a schematic view of the internal structure of an anti-seismic vortex shedding flowmeter of the present invention;

fig. 3 is the structural schematic diagram of the supporting mechanism of the anti-seismic vortex shedding flowmeter of the utility model.

In the figure: 1. a watch body; 11. a first limiting ring; 2. a gauge rod; 3. an amplifier; 4. a connecting pipe; 41. a second limiting ring; 5. a flange; 6. a cushioning shock-absorbing member; 7. a limit baffle; 71. a cushion pad; 8. a support mechanism; 81. a positioning ring; 811. a first hoop is clamped; 812. a second hoop; 813. a first threaded connecting piece; 82. a fixing ring; 821. a third clamp; 822. fourthly, clamping a hoop; 823. a second threaded connecting piece; 83. a connecting rod.

Detailed Description

The technical solution 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 only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, an embodiment of the present invention provides an anti-seismic vortex shedding flowmeter, which includes a meter body 1, a meter rod 2 connected to a middle position of a top end of the meter body 1, an amplifier 3 connected to a top end of the meter rod 2, a vortex generating body disposed in the meter body 1, a bottom end of the meter rod 2 disposed in the meter body 1 and connected to the vortex generating body, a connecting pipe 4 movably connected to an inner portion of each end of the meter body 1, a flange 5 connected to an end of the connecting pipe 4 located outside the meter body 1, a second limit ring 41 mounted on an outer side wall of the connecting pipe 4 located at an inner end of the meter body 1, first limit rings 11 mounted on inner side walls of the two ends of the meter body 1, and a buffer damping member 6 disposed between the first limit rings 11 and the second limit rings 41, buffering damper 6 sets up between connecting pipe 4 outer wall and the table body 1 inner wall, in this embodiment, buffering damper 6 can be but not limited to the spring that has buffering shock-absorbing capacity, be provided with the supporting mechanism 8 that is used for stably supporting table pole 2 between table pole 2 and the table body 1, through adopting above-mentioned structure, be connected vortex street flowmeter and fluid pipeline through flange 5, when vibrations appear, vibrations transmit to buffering damper 6 on, thereby it slides on two connecting pipes 4 to drive table body 1, cushion the shock attenuation, supporting stability to table pole 2 can be improved through the supporting mechanism 8 that sets up, avoid causing because vibrations potential safety hazards such as the not hard up slope of table pole 2, improve vortex street flowmeter's measurement accuracy, and the service life is prolonged.

In order to improve the sealing performance of the vortex shedding flowmeter and avoid fluid leakage, please refer to fig. 2, in some embodiments, a first dynamic seal matched with the connecting pipe 4 is disposed on an inner wall of the first limit ring 11 to improve the sealing performance between the first limit ring 11 and the connecting pipe 4, and a second dynamic seal matched with the meter body 1 is disposed on an outer wall of the second limit ring 41 to improve the sealing performance between the second limit ring 41 and the meter body 1.

Further, please refer to fig. 2 in combination, in some embodiments, a limiting baffle 7 is disposed at an end portion of the inside of the watch body 1 close to the connecting pipe 4, the limiting baffle 7 is a circular plate, an outer wall of the limiting baffle 7 is fixedly connected to an inner wall of the watch body 1, a cushion 71 is disposed at one side of the limiting baffle 7 close to the connecting pipe 4, the cushion 71 may be but not limited to a rubber material, through holes for allowing a fluid to pass through are formed in the limiting baffle 7 and the cushion 71, a diameter of the through hole is greater than an inner diameter of the connecting pipe 4, so as to prevent the limiting baffle 7 from affecting circulation of the fluid, the moving range of the connecting pipe 4 can be limited by the limiting baffle 7, so as to ensure a shock absorption and buffering effect, and prevent the connecting pipe 4 from being damaged by rigid contact with the limiting baffle 7 through the cushion 71.

To further disclose the supporting mechanism 8, please refer to fig. 1 and fig. 3 in combination, in some embodiments, the supporting mechanism 8 includes a positioning ring 81 sleeved on the watch rod 2, two fixing rings 82 fixed on the watch body 1, and two connecting rods 83 for connecting the fixing rings 82 and the positioning ring 81;

the positioning ring 81 consists of a first hoop 811 and a second hoop 812, the first hoop 811 and the second hoop 812 are symmetrically arranged on two sides of the meter rod 2, and two ends of the first hoop 811 and two ends of the second hoop 812 are connected and fixed through a first threaded connecting piece 813; the fixing ring 82 consists of a clamp III 821 and a clamp IV 822, the clamp III 821 and the clamp IV 822 are symmetrically arranged at the upper end and the lower end of the watch body 1, and the two ends of the clamp III 821 and the two ends of the clamp IV 822 are connected and fixed through a second threaded connecting piece 823; one end of one connecting rod 83 is fixedly connected with the outer wall of a first clamp 811 on the positioning ring 81, the other end of the connecting rod 83 is fixedly connected with the outer wall of a third clamp 821 on one fixing ring 82, one end of the other connecting rod 83 is fixedly connected with the outer wall of a second clamp 812 on the positioning ring 81, the other end of the other connecting rod 83 is fixedly connected with the outer wall of a third clamp 821 on the other fixing ring 82, the two connecting rods 83 are in an 'eight' shape, by adopting the structure, when the supporting mechanism 8 is installed, the first clamp 811 and the second clamp 812 are symmetrically placed on two sides of the outer wall of the meter rod 2, the first clamp 811 and the second clamp 812 are fixedly connected on the meter rod 2 through a first threaded connecting piece 813, at the moment, the third clamp 821 is lapped on the top end of the meter body 1, then the fourth clamp 822 is placed at the bottom end of the meter body 1 and corresponds to the positions of the third clamp 821, the second clamp 823 is fixedly connected through a second threaded connecting piece 823, the installation of the supporting mechanism 8 is completed, oblique supporting of the connecting rod 83, stable supporting of the meter rod 2 is achieved, and potential safety hazards such as looseness and inclination of the meter rod 2 caused by vibration are avoided.

In order to avoid the scratch damage to the joint of the meter rod 2 and the meter body 1 after the supporting mechanism 8 is installed, please refer to fig. 3 in combination, in some embodiments, the inner walls of the first clamp 811, the second clamp 812, the third clamp 821 and the fourth clamp 822 are all provided with non-slip mats, in this embodiment, the non-slip mats may be made of rubber, the non-slip mats may not only avoid the scratch damage to the outer walls of the meter rod 2 and the meter body 1, but also improve the connection stability of the positioning ring 81 and the fixing ring 82.

Wherein, vortex shedding flowmeter's theory of operation: when a triangular prism-shaped vortex generator is arranged in a fluid, two rows of regular vortices are alternately generated from two sides of the vortex generator, the vortices are called karman vortex streets, and the vortex rows are asymmetrically arranged at the downstream of the vortex generator. The generating frequency of the vortex is f, the average incoming flow velocity of the measured medium is V, the incident flow surface width of the vortex generating body is D, the drift diameter of the meter body is D, and the following relation is provided according to the Karman vortex street principle:

f＝St.V/〔(1-1.25d/D)d〕

in the formula: f-karman vortex frequency generated at one side of the generator;

St-Storohal number;

v-average flow velocity of fluid;

d-width of the flow surface of the column;

d-inner diameter of the pipeline.

A capacitance detection probe or a piezoelectric detection probe and a corresponding matching circuit are arranged in the vortex generating body, and then the capacitance detection type vortex street flow sensor or the piezoelectric detection type vortex street flow sensor can be formed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an antidetonation type vortex street flowmeter, includes the table body (1), the intermediate position on table body (1) top is connected with meter pole (2), the top of meter pole (2) is connected with amplifier (3), its characterized in that: the equal swing joint in inside at table body (1) both ends has connecting pipe (4), connecting pipe (4) are located table body (1) outside one end is connected with flange (5), connecting pipe (4) are located install spacing ring two (41) on the lateral wall of the inside one end of table body (1), all install spacing ring one (11) on the inside wall at table body (1) both ends, adjacent spacing ring one (11) with be provided with buffering damper (6) between spacing ring two (41), table pole (2) with be provided with between the table body (1) and be used for stablizing supporting mechanism (8) of table pole (2).

2. An anti-seismic vortex shedding flowmeter according to claim 1, wherein: the inner wall of the first limit ring (11) is provided with a first dynamic seal matched with the connecting pipe (4), and the outer wall of the second limit ring (41) is provided with a second dynamic seal matched with the meter body (1).

3. An anti-seismic vortex shedding flowmeter according to claim 1, wherein: the inside of the watch body (1) is close to the end part of the connecting pipe (4) is provided with a limiting baffle (7), the limiting baffle (7) is a circular plate, the outer wall of the limiting baffle (7) is fixedly connected with the inner wall of the watch body (1), and a through hole for fluid to pass through is formed in the limiting baffle (7).

4. An anti-seismic vortex shedding flowmeter according to claim 3, wherein: and a buffer pad (71) is arranged on one side of the limiting baffle (7) close to the connecting pipe (4).

5. An anti-seismic vortex shedding flowmeter according to claim 1, wherein: the supporting mechanism (8) comprises a positioning ring (81) sleeved on the meter rod (2), two fixing rings (82) fixed on the meter body (1) and two connecting rods (83) used for connecting the fixing rings (82) and the positioning ring (81);

the positioning ring (81) consists of a first hoop (811) and a second hoop (812), the first hoop (811) and the second hoop (812) are symmetrically installed on two sides of the gauge rod (2), and two ends of the first hoop (811) and the second hoop (812) are fixedly connected through a first threaded connecting piece (813);

fixed ring (82) comprise clamp three (821) and clamp four (822), clamp three (821) with the upper and lower both ends at table body (1) are installed to clamp four (822) symmetry, clamp three (821) with the both ends of clamp four (822) are all connected fixedly through threaded connection spare two (823).

6. An anti-seismic vortex shedding flowmeter according to claim 5, wherein: and anti-slip pads are arranged on the inner walls of the first clamp (811), the second clamp (812), the third clamp (821) and the fourth clamp (822).

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