CN212482588U - Precession vortex differential pressure type mass flowmeter - Google Patents

Precession vortex differential pressure type mass flowmeter Download PDF

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Publication number
CN212482588U
CN212482588U CN202021767623.9U CN202021767623U CN212482588U CN 212482588 U CN212482588 U CN 212482588U CN 202021767623 U CN202021767623 U CN 202021767623U CN 212482588 U CN212482588 U CN 212482588U
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China
Prior art keywords
differential pressure
venturi
tube
venturi tube
processing unit
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CN202021767623.9U
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Chinese (zh)
Inventor
白青松
王东
刘宇
陈丽亚
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CHENGDE FISCHER-PORTER AUTOMATION EQUIPMENT CO LTD
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CHENGDE FISCHER-PORTER AUTOMATION EQUIPMENT CO LTD
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Abstract

The utility model relates to a precession swirl differential pressure type mass flowmeter, including venturi and sensing device, the instrument flange is installed at the venturi both ends, inside is provided with swirl generating body and removes the whirl rectifier, sensing device includes converter and all is connected with its electric differential pressure signal acquisition processing unit and piezoelectric sensor, differential pressure signal acquisition processing unit is connected with venturi through upstream pressure tube and low reaches pressure tube, and upstream pressure tube installs in venturi's drum section, and low reaches pressure tube installs in venturi's throat; the piezoelectric sensor is installed on the outlet diffusion section of the Venturi tube through a mounting seat. By the scheme, the mass flow measurement can be completed, and meanwhile, the mass flow, the fluid density, the differential pressure, the frequency and the like can be accurately measured; the instrument has high measuring accuracy, stable and reliable work, high integration degree, compact structure, capability of displaying and outputting various data and convenient communication.

Description

Precession vortex differential pressure type mass flowmeter
Technical Field
The utility model relates to a flowmeter technical field especially relates to a precession swirl differential pressure formula mass flowmeter.
Background
Metering is on the eye of industrial production. The flow measurement is one of the components of the measurement science and technology, and has close relation with national economy, national defense construction and scientific research. The work is well done, the flowmeter has important effects on ensuring the product quality, improving the production efficiency and promoting the development of scientific technology, and particularly has more obvious status and effect in national economy in the current times that the energy crisis and the industrial production automation degree are higher and higher.
The existing fluids are various in types, different in physical properties, and various and changeable in-situ process parameters, such as steam with temperature and pressure varying with seasons, natural gas and coal gas with components varying with seasons, and the like. Aiming at the characteristics of the fluid, meter manufacturers develop various mass flowmeters to adapt to the metering requirements of different occasions and media, but the application range of the mass flowmeters has certain limitation. For example, a precession vortex flowmeter and a differential pressure flowmeter are used for measuring mass flow, the fluid operation density must be preset or a density measuring instrument is configured for measuring the density, so that the mass flow can be accurately measured in real time, the structure composition is complex, and the installation and debugging workload is large and complex; the Coriolis mass flowmeter cannot measure the mass flow of high-temperature liquid, high-temperature steam, high-temperature mixed gas with changed components and low-pressure gas with changed components based on the measurement principle, and has high acquisition cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a precession swirl differential pressure formula mass flowmeter has solved the problem that above-mentioned background art provided.
The utility model discloses a precession swirl differential pressure type mass flowmeter, including venturi and sensing device, sensing device installs on venturi, the instrument flange is installed at the venturi both ends, and inside has set gradually the swirl generating body and has removed the whirl rectifier by entry to export, and its characteristics are, sensing device includes converter and all differential pressure signal acquisition processing unit and the piezoelectric sensor who is connected rather than the electricity, differential pressure signal acquisition processing unit through upstream pressure tube and low reaches pressure tube with venturi is connected, just the upstream pressure tube is installed in the cylinder section of venturi, the low reaches pressure tube is installed the throat of venturi; the piezoelectric sensor is installed at the outlet diffusion section of the venturi tube through a mounting seat.
Preferably, the differential pressure signal acquisition and processing unit comprises a differential pressure transmitter, a three-valve group and a conversion joint.
Preferably, the converter and the piezoelectric sensor are fixedly connected through a support frame.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a flowmeter satisfies fluid mass flow's accurate measurement, is particularly useful for high-temperature liquid, high-temperature steam, the high-temperature gas mixture that the component changes and the low-pressure gas that the component changes, temperature pressure are unstable, the component advances the factory and changes the accurate measurement that leads to the great fluid mass flow of fluid density change, need not independent configuration density measurement instrument or temperature pressure compensation arrangement, can accomplish mass flow measurement work, simultaneously can accurate measurement such as mass flow, fluid density, differential pressure, frequency. The instrument has high measurement accuracy, stable and reliable work, high integration degree, compact structure, capability of displaying and outputting various data and convenient communication; the method is convenient for users to analyze data and improve the process, improves the production efficiency, reduces the cost and adapts to the social management and control requirements of energy resources.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of a venturi tube according to the present invention;
fig. 3 is the structure schematic diagram of the differential pressure signal acquisition processing unit of the utility model.
In the drawings, the reference numbers: 11-instrument flange, 12-vortex generating body, 13-venturi tube, 14-piezoelectric sensor mounting seat, 15-deswirl rectifier, 2-upstream pressure sampling pipe, 3-downstream pressure sampling pipe, 4-differential pressure signal acquisition processing unit, 41-differential pressure transmitter, 42-three valve group, 43-adapter, 5-converter, 6-support frame, 7-piezoelectric sensor.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1-3, the utility model discloses a precession swirl differential pressure type mass flowmeter, including venturi 13 and sensing device, sensing device installs on venturi 13, instrument flange 11 is installed at venturi 13 both ends, and inside has set gradually swirl generating body 12 and has removed cyclone rectifier 15 by the entry to the export, and its characteristics are, sensing device includes converter 5 and all is connected with its electric differential pressure signal acquisition processing unit 4 and piezoelectric sensor 7, differential pressure signal acquisition processing unit 4 through upstream pressure sampling pipe 2 and low reaches pressure sampling pipe 3 with venturi 13 is connected, and upstream pressure sampling pipe 2 installs in venturi 13's drum section, low reaches pressure sampling pipe 3 installs in venturi 13's throat; the piezoelectric sensor 7 is mounted on the outlet diffuser of the venturi tube 13 by means of a mounting seat.
Preferably, the differential pressure signal collecting and processing unit 4 comprises a differential pressure transmitter 41, a three-valve set 42 and a conversion connector 43.
Preferably, the converter 5 and the piezoelectric sensor 7 are fixedly connected through a support frame 6.
The utility model provides a flowmeter, differential pressure transmitter 41 and three valves 42 are connected through valves mounting screw, and seal gasket seals, and crossover sub 43 and three valves threaded connection, crossover sub 43 and upper reaches are got and are pressed pipe 2, the low reaches are got and are pressed pipe 3 welded connection.
Static pressure P1 and P2 in the upstream pressure sampling pipe 2 and the downstream pressure sampling pipe 3 are transmitted to a differential pressure transmitter 41 through a conversion joint 43 and a three-valve group 42, and the differential pressure transmitter 41 converts static pressure difference signals of the two into electric signals and then transmits the electric signals to a converter 5.
The piezoelectric sensor 7 is arranged on the diffusion section of the Venturi tube 13 through a piezoelectric sensor mounting seat 14, collects vortex frequency signals, converts the vortex frequency signals into electric signals and transmits the electric signals to the converter 5.
The support frame 6 is used for installing the converter 5, and simultaneously contains a differential pressure signal line output by the differential pressure signal acquisition and processing unit 4 and an electric signal cable output by the piezoelectric sensor 7.
The converter 5 receives vortex frequency signals of the piezoelectric sensor 7 and differential pressure signals of the differential pressure signal acquisition processing unit 4, performs signal amplification, filtering, shaping, calculation and other work, performs work condition volume calculation, operation density calculation, mass flow calculation, accumulated flow calculation and other work according to the measurement principle of the precession vortex differential pressure type mass flowmeter, and completes display, signal remote transmission and communication of various parameters.
The terms "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only.
In the present invention, "first", "second" and "third" do not represent specific quantities or sequences, but are merely used for distinguishing names.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (3)

1. The precession vortex differential pressure type mass flowmeter comprises a Venturi tube (13) and a sensing device, wherein the sensing device is installed on the Venturi tube (13), instrument flanges (11) are installed at two ends of the Venturi tube (13), and a vortex generating body (12) and a deswirl rectifier (15) are sequentially arranged from an inlet to an outlet inside the Venturi tube (13), the precession vortex differential pressure type mass flowmeter is characterized in that the sensing device comprises a converter (5), a differential pressure signal acquisition processing unit (4) and a piezoelectric sensor (7) which are electrically connected with the converter, the differential pressure signal acquisition processing unit (4) is connected with the Venturi tube (13) through an upstream pressure sampling tube (2) and a downstream pressure sampling tube (3), the upstream pressure sampling tube (2) is installed at a cylindrical section of the Venturi tube (13), and the downstream pressure sampling tube (3) is installed at the throat part of the Venturi tube (13); the piezoelectric sensor (7) is installed at the outlet diffusion section of the Venturi tube (13) through a mounting seat.
2. A precession vortex differential pressure mass flowmeter according to claim 1, characterised in that the differential pressure signal acquisition and processing unit (4) comprises a differential pressure transmitter (41), a three-valve set (42) and a crossover sub (43).
3. A precession vortex differential mass flowmeter according to claim 1, characterised in that the transducer (5) is fixedly connected to the piezoelectric transducer (7) by a support frame (6).
CN202021767623.9U 2020-08-22 2020-08-22 Precession vortex differential pressure type mass flowmeter Active CN212482588U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021767623.9U CN212482588U (en) 2020-08-22 2020-08-22 Precession vortex differential pressure type mass flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021767623.9U CN212482588U (en) 2020-08-22 2020-08-22 Precession vortex differential pressure type mass flowmeter

Publications (1)

Publication Number Publication Date
CN212482588U true CN212482588U (en) 2021-02-05

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ID=74448301

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021767623.9U Active CN212482588U (en) 2020-08-22 2020-08-22 Precession vortex differential pressure type mass flowmeter

Country Status (1)

Country Link
CN (1) CN212482588U (en)

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