CN211877128U

CN211877128U - High-precision vortex shedding flowmeter

Info

Publication number: CN211877128U
Application number: CN202020725214.6U
Authority: CN
Inventors: 刘洪泉
Original assignee: Wuxi Hengxin Measurement And Control Instrument Co ltd
Current assignee: Wuxi Hengxin Measurement And Control Instrument Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-11-06
Anticipated expiration: 2030-05-07

Abstract

The utility model discloses a high accuracy vortex shedding flowmeter, including flowmeter body and buffer gear, one side of flowmeter body inside is provided with triangular prism type vortex generating body, one side of triangular prism type vortex generating body is provided with piezoelectric stress formula sensor inside the flowmeter body, be provided with the display on the surface of flowmeter body up end, piezoelectric stress formula sensor and display electric connection, one side of triangular prism type vortex generating body keeping away from piezoelectric stress formula sensor inside the flowmeter body is connected with the installing frame through seting up internal thread screw thread, be provided with a plurality of filter screen inside the installing frame, one side of installing frame inside is provided with the installing column; the utility model discloses simple structure can increase the stability of vortex street flow installation effectively, prevents that fluidic velocity of flow from making the quick shake of vortex street flowmeter influence the measurement precision at the excessive speed, filters the impurity in the fluid effectively simultaneously, prevents that the inside precision structure of flowmeter is impaired.

Description

High-precision vortex shedding flowmeter

Technical Field

The utility model belongs to the technical field of vortex flowmeter equipment, concretely relates to high accuracy vortex flowmeter.

Background

The vortex street flowmeter is produced based on Karman vortex street principle, and is mainly used for measuring flow of industrial pipeline medium fluid, such as various media of gas, liquid and steam, etc. it features small pressure loss, wide range of measurement, high precision, no influence of fluid density, pressure, temperature, viscosity, etc. when measuring working condition volume flow, and no movable mechanical parts, so that it has high reliability, small maintenance amount and long-term stability of instrument parameters. The vortex flowmeter adopts a piezoelectric stress sensor, has high reliability, can work in the working temperature range of-20 ℃ to +250 ℃, has analog standard signals and digital pulse signal output, is easy to be matched with a computer and other digital systems for use, is an advanced and ideal measuring instrument, and has some problems at present.

The utility model discloses a heavy-calibre high accuracy vortex shedding flowmeter as bulletin number 201420816739.5 discloses, it is equipped with the independent little buret of a plurality of in the buret of heavy-calibre, measure in shunting the flow of heavy-calibre to a plurality of little bore buret, make measuring precision improve, and the diameter of the buret of heavy-calibre no longer receives the restriction, but do not set for corresponding shock-absorbing structure, when fluidic velocity of flow is very fast, vibrations take place easily for the flowmeter, thereby influence the precision of flowmeter, also do not set up corresponding filtering mechanism simultaneously, the inside precision mechanism of flowmeter is impaired easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high accuracy vortex shedding 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 a high accuracy vortex shedding flowmeter, includes flowmeter body and buffer gear, the inside one side of flowmeter body is provided with triangle columnar vortex generating body, the inside one side at triangle columnar vortex generating body of flowmeter body is provided with piezoelectricity stress sensor, be provided with the display on the surface of flowmeter body up end, piezoelectricity stress sensor and display electric connection, the inside one side of keeping away from piezoelectricity stress sensor at triangle columnar vortex generating body of flowmeter body has the installing frame through seting up female screw thread connection, the inside a plurality of filter screen that is provided with of installing frame, the inside one side of installing frame is provided with the erection column, the one side that is close to triangle columnar vortex generating body on the erection column is provided with a plurality of activated carbon plate, buffer gear sets up on the lower terminal surface of flowmeter body, buffer gear is by a plurality of telescopic link, a plurality of telescopic link, The flowmeter comprises a mounting seat, a plurality of first springs, a plurality of connecting threaded rods, a plurality of mounting plates, a support column and a limiting ring, wherein the plurality of telescopic rods are arranged on the outer surface of the lower end of the flowmeter body, the lower end of each telescopic rod is provided with the mounting seat, the first springs are arranged on the outer sides of the telescopic rods on the upper end face of the mounting seat, the upper ends of the first springs are arranged on the flowmeter body, the two sides of the mounting seat are both connected with the connecting threaded rods through thread grooves, the mounting plates are movably arranged at the other ends of the connecting threaded rods, the support column is arranged on the upper end face of the mounting plate, and the limiting ring is arranged at.

Preferably, a positioning ring is arranged on the outer surface of the upper end of the flowmeter body and is arranged on the display.

Preferably, the number of the filter screens is at least four, and the filter screens are arranged in a crossed mode.

Preferably, the activated carbon plates are arranged in parallel.

Preferably, both sides of the upper end surface of the mounting seat are provided with second springs.

Preferably, the inner side wall of the limiting ring is provided with a rubber ring.

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

(1) the utility model discloses a be provided with buffer gear, buffer gear sets up on the lower terminal surface of flowmeter body, and buffer gear comprises a plurality of telescopic link, mount pad, a plurality of first spring, a plurality of connecting threaded rod, a plurality of mounting panel, support column and spacing ring, through buffer gear's effect, can increase the stability of vortex street flow installation effectively, prevents that the fluidic velocity of flow from making the quick shake of vortex street flowmeter influence the measurement precision too fast;

(2) the utility model discloses a be provided with a plurality of filter screen inside the installing frame, the inside one side of installing frame is provided with the erection column, and the one side that is close to triangular prism type vortex generating body on the erection column is provided with a plurality of activated carbon plate, and through the filtration absorption of filter screen and activated carbon plate, filter the impurity in the fluid effectively, prevent that the inside accurate structure of flowmeter is impaired.

Drawings

FIG. 1 is an overall front view of the present invention;

fig. 2 is a schematic view of the internal structure of the flowmeter body of the present invention;

fig. 3 is a side view of the stop collar of the present invention.

In the figure: 1. a flowmeter body; 101. a positioning ring; 2. a buffer mechanism; 21. a telescopic rod; 22. a mounting seat; 23. a first spring; 24. connecting a threaded rod; 25. mounting a plate; 26. a support pillar; 27. a limiting ring; 271. a rubber ring; 3. a triangular prism type vortex generating body; 4. a piezoelectric stress sensor; 5. a display; 6. installing a frame; 61. filtering with a screen; 62. mounting a column; 63. an activated carbon plate; 7. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a high-precision vortex shedding flowmeter, which comprises: a high-precision vortex shedding flowmeter comprises a flowmeter body 1 and a buffer mechanism 2, wherein a triangular prism type vortex generating body 3 is installed on one side inside the flowmeter body 1, a piezoelectric stress type sensor 4 is installed on one side of the triangular prism type vortex generating body 3 inside the flowmeter body 1, a display 5 is installed on the outer surface of the upper end face of the flowmeter body 1 through bolts, the piezoelectric stress type sensor 4 is electrically connected with the display 5 through a lead, a mounting frame 6 is connected with one side of the triangular prism type vortex generating body 3 away from the piezoelectric stress type sensor 4 through an internal thread, a plurality of filter screens 61 are installed inside the mounting frame 6, a mounting column 62 is welded on one side inside the mounting frame 6, a plurality of activated carbon plates 63 are installed on one side of the mounting column 62 close to the triangular prism type vortex generating body 3, and the buffer mechanism 2 is installed on the lower end face of the flowmeter body 1, buffer gear 2 is by a plurality of telescopic link 21, mount pad 22, the first spring 23 of a plurality of, a plurality of connecting threaded rod 24, a plurality of mounting panel 25, support column 26 and spacing ring 27 are constituteed, install a plurality of telescopic link 21 through the bolt on the surface of flowmeter body 1 lower extreme, mount pad 22 is installed through the bolt to the lower extreme of telescopic link 21, install first spring 23 in the outside of telescopic link 21 on the up end of mount pad 22, install on flowmeter body 1 the upper end of first spring 23, there is connecting threaded rod 24 both sides of mount pad 22 all through seting up thread groove threaded connection, mounting panel 25 is installed through the bearing to connecting threaded rod 24's the other end, the welding has support column 26 on mounting panel 25's the up end, the upper end welding of support column 26 has spacing ring 27.

In this embodiment, preferably, the positioning ring 101 is welded on the outer surface of the upper end of the flowmeter body 1, and the positioning ring 101 is sleeved on the display 5, which is beneficial to increasing the stability of the display 5.

In this embodiment, preferably, the number of the filter screens 61 is at least four, and the filter screens 61 are distributed in a cross manner, which is beneficial to fully filtering.

In this embodiment, preferably, the activated carbon plates 63 are distributed in parallel, which is beneficial to ensure that the fluid smoothly passes through the activated carbon plates 63 and does not affect the normal circulation of the fluid.

In this embodiment, preferably, the second springs 7 are mounted on both sides of the upper end surface of the mounting seat 22, which is favorable for further achieving a certain damping effect.

In this embodiment, it is preferable that the inner sidewall of the retainer ring 27 is provided with a rubber ring 271 for better fixing on the fluid guide pipe.

The utility model discloses a theory of operation and use flow: in the device, by arranging the buffer mechanism 2, the buffer mechanism 2 is composed of a plurality of telescopic rods 21, a mounting seat 22, a plurality of first springs 23, a plurality of connecting threaded rods 24, a plurality of mounting plates 25, a support column 26 and a limit ring 27, when the flowmeter body 1 is mounted, a fluid guide pipe firstly penetrates through the limit ring 27 and then is connected with the flowmeter body 1, when the flowmeter body 1 shakes due to the fast flow rate of the fluid, the vibration of the flowmeter body 1 can be reduced through the transmission of the telescopic rods 21, the first springs 23, the mounting seat 22 and the limit ring 27, meanwhile, a pipeline can be synchronous with the vibration of the flowmeter body 1, the stability of vortex street flow installation can be effectively increased, the vortex street flowmeter is prevented from shaking quickly due to the fast flow rate of the fluid to influence the measurement accuracy, and impurities in the fluid are effectively filtered through the filtering adsorption of the filter screen 61 and the activated carbon plate 63, the precise structure inside the flowmeter is prevented from being damaged.

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

1. The utility model provides a high accuracy vortex flowmeter, includes flowmeter body (1) and buffer gear (2), its characterized in that: a triangular prism type vortex generating body (3) is arranged on one side inside the flowmeter body (1), a piezoelectric stress type sensor (4) is arranged on one side of the triangular prism type vortex generating body (3) inside the flowmeter body (1), a display (5) is arranged on the outer surface of the upper end face of the flowmeter body (1), the piezoelectric stress type sensor (4) is electrically connected with the display (5), a mounting frame (6) is connected with one side, far away from the piezoelectric stress type sensor (4), of the triangular prism type vortex generating body (3) inside the flowmeter body (1) through an internal thread, a plurality of filter screens (61) are arranged inside the mounting frame (6), a mounting column (62) is arranged on one side inside the mounting frame (6), and a plurality of activated carbon plates (63) are arranged on one side, close to the triangular prism type vortex generating body (3), of the mounting column (62), the buffer mechanism (2) is arranged on the lower end face of the flowmeter body (1), the buffer mechanism (2) is composed of a plurality of telescopic rods (21), an installation seat (22), a plurality of first springs (23), a plurality of connecting threaded rods (24), a plurality of installation plates (25), a support column (26) and a limiting ring (27), the plurality of telescopic rods (21) are arranged on the outer surface of the lower end of the flowmeter body (1), the installation seat (22) is arranged at the lower end of each telescopic rod (21), the first springs (23) are arranged on the outer sides of the telescopic rods (21) on the upper end face of the installation seat (22), the upper ends of the first springs (23) are arranged on the flowmeter body (1), the connecting threaded rods (24) are connected to the two sides of the installation seat (22) through thread grooves and threads, the installation plates (25) are movably arranged at the other ends of the connecting threaded rods (24), be provided with support column (26) on the up end of mounting panel (25), the upper end of support column (26) is provided with spacing ring (27).

2. A high accuracy vortex shedding flowmeter according to claim 1, wherein: a positioning ring (101) is arranged on the outer surface of the upper end of the flowmeter body (1), and the positioning ring (101) is arranged on the display (5).

3. A high accuracy vortex shedding flowmeter according to claim 1, wherein: the number of the filter screens (61) is at least four, and the filter screens (61) are arranged in a crossed mode.

4. A high accuracy vortex shedding flowmeter according to claim 1, wherein: the activated carbon plates (63) are arranged in parallel.

5. A high accuracy vortex shedding flowmeter according to claim 1, wherein: and second springs (7) are arranged on two sides of the upper end surface of the mounting seat (22).

6. A high accuracy vortex shedding flowmeter according to claim 1, wherein: and a rubber ring (271) is arranged on the inner side wall of the limiting ring (27).