CN202145140U - Intelligent vortex street flow meter with temperature pressure compensation device on vortex street generating body - Google Patents

Intelligent vortex street flow meter with temperature pressure compensation device on vortex street generating body Download PDF

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Publication number
CN202145140U
CN202145140U CN201120239905U CN201120239905U CN202145140U CN 202145140 U CN202145140 U CN 202145140U CN 201120239905 U CN201120239905 U CN 201120239905U CN 201120239905 U CN201120239905 U CN 201120239905U CN 202145140 U CN202145140 U CN 202145140U
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CN
China
Prior art keywords
pressure
vortex
vortex street
intelligent
temperature
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CN201120239905U
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Chinese (zh)
Inventor
方斌华
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长岭炼化岳阳工程设计有限公司
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Priority to CN201120239905U priority Critical patent/CN202145140U/en
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Publication of CN202145140U publication Critical patent/CN202145140U/en

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Abstract

The utility model relates to an intelligent vortex street flow meter with a temperature pressure compensation device on a vortex street generating body, comprising a vortex street flow sensor and an intelligent transmitter, wherein the vortex street flow sensor consists of a vortex street detector and a vortex street generating body, the vortex street detector is arranged on a pipe wall of the flow meter, and one end of the vortex street flow meter extends into a pipeline to detect the flow and transmit detected data to the intelligent transmitter; the vortex street generating body is arranged on the pipe wall of the flow meter, and one end of the vortex street generating body extends into the bottom in the pipeline to remain a gap with the pipe wall in the bottom; and the other end of the vortex street generating body extends out of the pipe wall of the flow meter, the top of the vortex street generating body is provided with a platinum resistance temperature sensor and a pressure sensor, and the platinum resistance temperature sensor and the pressure sensor transmit a temperature signal and a pressure signal detected by two holes to the intelligent transmitter by an electric cable. The form of the fluid cannot be influenced due to a sourcing function of the temperature pressure compensation of the flow meter main body, and the temperature and the pressure can be sourced in the same manner to eliminate the influence to the form change of the fluid, so that the flow of the fluid can be exactly metered.

Description

The intelligent vortex shedding flowmeter of temperature and pressure compensation device is set on the vortex shedder

Technical field

The utility model relates to multi-field mass flow measurements such as oil, chemical industry, metallurgy, electric power, papermaking, and referring in particular to a kind of is the intelligent vortex shedding flowmeter that the temperature and pressure compensation device is set on the vortex shedder at the continuous gas that changes of temperature and pressure and the mass flow measurement meter of steam.

Background technology

At present, in the flow measurement scheme of gas and steam, vortex shedding flow meter is a preferred option.The vortex shedding flow meter that similar external famous brand name Rosemount, Yokogawa, E+H produced does not all have body to carry the function of temperature and pressure compensation; But in addition need be on pipeline reload temperature sensor and pressure transducer more in addition; Through 3 umbilical cable; The difference delivery rate, three signals of temperature and pressure send the Distributed Control System (DCS) (DCS) of central control room (CCR), in DCS, accomplish the temperature and pressure compensation to flow value then.Number of cables is many, and complicacy is installed, and difficulty of construction is big.Some instrument itself has also realized the integrated compensation of temperature and pressure, but affects in the form of getting meeting convection cell on the warm ways of measure pressure, thus the whole measuring accuracy of influence.

Summary of the invention

The purpose of the utility model is to improve and innovate to defective that exists in the background technology and problem, and the intelligent vortex shedding flowmeter that the temperature and pressure compensation device is set on a kind of rationally double economical and practical vortex shedder is provided.

The technical scheme of the utility model is a kind of vortex flow sensors that is arranged on the pipeline and flowmeter of intelligent transducer of comprising of structure, and vortex flow sensors is made up of vortex street detecting device and vortex shedder, wherein:

The vortex street detecting device is arranged on the flowmeter tube wall, and an end stretches into the pipeline detection flow, and also will detect data is sent to intelligent transducer;

Described vortex shedder is arranged on the flowmeter tube wall, and an end stretches into the pipeline inner bottom part and leaves the gap with the bottom inner tubal wall; The other end stretches out the flowmeter tube wall; The top is provided with platinum resistance temperature sensor and pressure transducer; And two through holes of offering on platinum resistance temperature sensor and pressure transducer and the vortex shedder are that temperature is got the hole, source and pressure is got the corresponding setting in hole, source, and platinum resistance temperature sensor and pressure transducer are sent to intelligent transducer through detected temperature signal in two holes and pressure signal through cable.

Advantage of the utility model and beneficial effect:

The utility model utilizes vortex shedder to realize the source of the getting function of body temperature and pressure compensation dexterously; This get the source biggest advantage be not can convection cell form produce any influence, platinum resistance temperature sensor and pressure transducer are installed in the top of vortex shedder, parallel at the top of vortex shedder 2 installing ports are set; These 2 installing ports are that whole bore mode is got the source; From the top drilling of vortex shedder, be tunneled to the bottom of vortex shedder, and leave the gap with the bottom inner tubal wall.In this way temperature and pressure is got the source, can eliminate the influence of convection cell metamorphosis, thus the flow of meter fluid accurately.The downsizing of trying one's best of the size of installing port; The installing port of general platinum resistance temperature sensor is of a size of NPT1/4 " (FM); the installing port of pressure transducer is of a size of φ 6, can save installing space through this mounting means as far as possible, makes incorporate installation compact more.

The utility model utilizes the intelligent vortex shedding flowmeter measurement scheme of vortex shedder realization body temperature and pressure compensation function by vortex shedder, the vortex street detecting device, and platinum resistance temperature sensor, pressure transducer, intelligent transducer are formed.Described vortex shedder, vortex street detecting device are every requisite parts of vortex shedding flow meter, are used to measure the volumetric flow rate of fluid.Described platinum resistance temperature sensor, pressure transducer are used to measure the temperature and pressure of fluid, as the basic parameter of the current density of Fluid Computation.Described intelligent transducer is one and has acquired signal, calculates the multi-functional microprocessor of output signal.At first integrated volumetric flow rate; Three signals of temperature and pressure; Completion draws mass rate accurately to the calculating of the compensate function of temperature and pressure, final intelligent transducer can also one accurately mass flow value send the Distributed Control System (DCS) (DCS) of central control room (CCR) to indicate or control.Simultaneously, can the superpose signal of a HART communications protocol of the flow value of output only is implemented in through one 2 core cable and shows flow among the DCS, three signals of temperature and pressure.

Description of drawings

Fig. 1 is the utility model mounting structure synoptic diagram.

Fig. 2 is Figure 1A-A cross-sectional view.

Fig. 3 is the utility model vortex shedder and platinum resistance temperature sensor and pressure transducer mounting structure synoptic diagram.

Embodiment

Can be known that by Fig. 1 to 3 the utility model comprises vortex flow sensors and the intelligent transducer 3 that is arranged on the pipeline, vortex flow sensors is made up of vortex street detecting device 1 and vortex shedder 2, wherein:

Vortex street detecting device 1 is arranged on the flowmeter tube wall, and an end stretches into the pipeline detection flow, and also will detect data is sent to intelligent transducer 3;

Described vortex shedder 2 is arranged on the flowmeter tube wall, and an end stretches into the pipeline inner bottom part and leaves the gap with the bottom inner tubal wall; The other end stretches out the flowmeter tube wall; The top is provided with platinum resistance temperature sensor 4 and pressure transducer 5; And two through holes of offering on platinum resistance temperature sensor 4 and pressure transducer 5 and the vortex shedder 2 are that temperature is got hole, source 6 and got the 7 corresponding settings of hole, source with pressure, and platinum resistance temperature sensor 4 and pressure transducer 5 are sent to intelligent transducer 3 through detected temperature signal in two holes and pressure signal through cable.

The described platinum resistance temperature sensor 4 of the utility model is installed in temperature and gets on the hole, source 6, and platinum resistance temperature sensor 4 bottoms are provided with feeler lever 8, and feeler lever 8 inserts temperature and gets hole, source 6 and extend the bottom, hole, and from the hole bottom open end one slight distance is arranged.Described pressure transducer 5 is installed in pressure and gets on the hole, source 7, three valve groups 9, disposable pressure measuring valve 10 and the stainless-steel tube 11 that pressure transducer 5 is provided with through the bottom be arranged on pressure and get hole, source 7 interior pressure guiding pipes and be connected.Described pressure transducer 5, three valve groups 9, disposable pressure measuring valve 10 adopt the socket weld modes to be connected with stainless-steel tube 11, and wherein disposable pressure measuring valve 10 is the socket weld valve.

The structural principle of the utility model:

The utility model is made up of built-in platinum resistance temperature sensor 4, pressure transducer 5, vortex flow sensors and intelligent transducer 3.And built-in platinum resistance temperature sensor 4, pressure transducer 5 be installed on the vortex shedder 2, and platinum resistance temperature sensor 4, pressure transducer 5, vortex shedder 2 threes are integrated.Platinum resistance temperature sensor 4, pressure transducer 5 are installed in the top of vortex shedder 2, and the bottom of vortex shedder 2 is then as the place, the source of getting of pressure and temperature, this get the source biggest advantage be not can convection cell form produce any influence.Platinum resistance temperature sensor 4 and pressure transducer 5 are installed in the top of vortex shedder 2; It is parallel at the top of vortex shedder 2 that two installing ports are set is that temperature is got hole, source 6 and got hole, source 7 with pressure; These two installing ports are that whole bore mode is got the source, from the top drilling of vortex shedder 2, are tunneled to the bottom of vortex shedder 2; And leaving the gap with the bottom inner tubal wall, convection cell is got the source in this way.The size of installing port is adjusted according to the size of vortex shedder voluntarily, and the installing port of general platinum resistance temperature sensor 4 is of a size of NPT1/4 " (FM), the installing port of pressure transducer 5 is of a size of φ 6.The installing port that temperature is got hole, source 6 is of a size of NPT1/4 " (M); less than common installation dimension; adopt this kind screw thread mounting means can practice thrift installing space, the installation dimension of platinum resistance temperature sensor 4 is NPT1/4 " (FM), simultaneously inserting of platinum resistance temperature sensor 4 feeler levers is lower than the bottom deeply slightly and gets the place, source; Can guarantee that like this feeler lever does not stretch out the bottom of vortex shedder, avoid changing the form of fluid.The top that pressure is got hole, source 7 is got the source mouth and is of a size of φ 6; In order to practice thrift installing space; Pressure guiding pipe adopts small size stainless-steel tube φ 6, adds pressure measuring valve 10 simultaneously one time, through stainless-steel tube pressure signal is caused three valve groups 9 again; Install and adopt socket welded mode, one time pressure measuring valve 10 is selected the socket weld valve for use.Last three valve groups 9 cause pressure transducer 5 through interconnect with pressure signal.

The utility model principle of work:

After the utility model vortex shedder 2 produces whirlpools, detect the number of whirlpool, deliver to intelligent transducer 3 then by vortex street detecting device 1.Platinum resistance temperature sensor 4 is got hole, source 6 through temperature, RTD detecting element, and integrative temperature transmitter, and stube cable is delivered to intelligent transducer 3 to temperature detection signal.Pressure transducer 5 is also got 7, the impulse valves in hole, source through pressure, pressure unit, and stube cable is also delivered to intelligent transducer 3 to pressure signal.Like this, intelligent transducer 3 has received flow, three signals of temperature and pressure, and intelligent transducer 3 has obtained the density of fluid through the compensate function to temperature and pressure, multiply by the volumetric flow rate that receives and has just drawn mass rate accurately.Intelligent transducer 3 finally one accurately flow value send the Distributed Control System (DCS) (DCS) of central control room (CCR) to indicate.Simultaneously, the flow value of the output HART communications protocol that can superpose is implemented in through a cable and shows flow among the DCS, three signals of temperature and pressure.

The utility model is made up of built-in platinum resistance temperature sensor, pressure transducer, vortex flow sensors and intelligent transducer.And built-in platinum resistance temperature sensor, pressure transducer be installed on the vortex shedder, and platinum resistance temperature sensor, pressure transducer, vortex shedder three are integrated.Intelligent transducer has received flow, and three signals of temperature and pressure are through having calculated mass rate accurately.Therefore the flow value of the intelligent transducer output HART communication signal that can superpose, just can be implemented in through a cable and to show flow among the DCS, three signals of temperature and pressure.

The described embodiment of the utility model only is the description that the preferred implementation of the utility model is carried out; Be not that the utility model design and scope are limited; Under the prerequisite that does not break away from the utility model design philosophy, engineering technical personnel make the technical scheme of the utility model in this area various modification and improvement all should fall into the protection domain of the utility model; The technology contents that the utility model is asked for protection all is documented in claims.

Claims (4)

1. the intelligent vortex shedding flowmeter of temperature and pressure compensation device is set on the vortex shedder; It is characterized in that comprising the vortex flow sensors and the intelligent transducer (3) that are arranged on the pipeline; Vortex flow sensors is made up of vortex street detecting device (1) and vortex shedder (2), wherein:
Vortex street detecting device (1) is arranged on the flowmeter tube wall, and an end stretches into the pipeline detection flow, and also will detect data is sent to intelligent transducer (3);
Described vortex shedder (2) is arranged on the flowmeter tube wall, and an end stretches into the pipeline inner bottom part and leaves the gap with the bottom inner tubal wall; The other end stretches out the flowmeter tube wall; And be provided with platinum resistance temperature sensor (4) and pressure transducer (5) at the top; And two through holes of offering on platinum resistance temperature sensor (4) and pressure transducer (5) and the vortex shedder (2) are that temperature is got hole, source (6) and pressure is got the corresponding setting in hole, source (7), and platinum resistance temperature sensor (4) and pressure transducer (5) are sent to intelligent transducer (3) through detected temperature signal in two holes and pressure signal through cable.
2. the intelligent vortex shedding flowmeter of temperature and pressure compensation device is set on the vortex shedder according to claim 1; It is characterized in that described platinum resistance temperature sensor (4) is installed in temperature and gets on the hole, source (6); And platinum resistance temperature sensor (4) bottom is provided with feeler lever (8); Feeler lever (8) insertion temperature is got hole, source (6) and is extended the bottom, hole, and from the hole bottom open end one slight distance is arranged.
3. the intelligent vortex shedding flowmeter of temperature and pressure compensation device is set on the vortex shedder according to claim 1; It is characterized in that described pressure transducer (5) is installed in pressure and gets on the hole, source (7), three valve groups (9), disposable pressure measuring valve (10) and the stainless-steel tube (11) that pressure transducer (5) is provided with through the bottom be arranged on pressure and get the interior pressure guiding pipe in hole, source (7) and be connected.
4. the intelligent vortex shedding flowmeter of temperature and pressure compensation device is set on the vortex shedder according to claim 3; It is characterized in that described pressure transducer (5), three valve groups (9), disposable pressure measuring valve (10) and stainless-steel tube (11) adopt the socket weld mode to be connected, wherein disposable pressure measuring valve (10) is the socket weld valve.
CN201120239905U 2011-07-08 2011-07-08 Intelligent vortex street flow meter with temperature pressure compensation device on vortex street generating body CN202145140U (en)

Priority Applications (1)

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CN201120239905U CN202145140U (en) 2011-07-08 2011-07-08 Intelligent vortex street flow meter with temperature pressure compensation device on vortex street generating body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120239905U CN202145140U (en) 2011-07-08 2011-07-08 Intelligent vortex street flow meter with temperature pressure compensation device on vortex street generating body

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103438948A (en) * 2013-08-14 2013-12-11 合肥精大仪表股份有限公司 Temperature and pressure compensation type high-temperature precession vortex flowmeter
CN107907177A (en) * 2017-11-21 2018-04-13 广州西森自动化控制设备有限公司 A kind of mark side's vortex-shedding meter for carrying temperature pressure compensation
CN108731750A (en) * 2018-08-13 2018-11-02 合肥精都机电仪表有限公司 A kind of vortex-shedding meter
CN109506721A (en) * 2018-12-09 2019-03-22 中国航发南方工业有限公司 Microspur hole flow-measuring method
CN109540228A (en) * 2018-12-09 2019-03-29 中国航发南方工业有限公司 It is a kind of for measuring the device of microspur hole flow

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103438948A (en) * 2013-08-14 2013-12-11 合肥精大仪表股份有限公司 Temperature and pressure compensation type high-temperature precession vortex flowmeter
CN107907177A (en) * 2017-11-21 2018-04-13 广州西森自动化控制设备有限公司 A kind of mark side's vortex-shedding meter for carrying temperature pressure compensation
CN108731750A (en) * 2018-08-13 2018-11-02 合肥精都机电仪表有限公司 A kind of vortex-shedding meter
CN109506721A (en) * 2018-12-09 2019-03-22 中国航发南方工业有限公司 Microspur hole flow-measuring method
CN109540228A (en) * 2018-12-09 2019-03-29 中国航发南方工业有限公司 It is a kind of for measuring the device of microspur hole flow
CN109506721B (en) * 2018-12-09 2020-05-19 中国航发南方工业有限公司 Microspore hole flow measuring method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120215

Termination date: 20170708