CN201828300U - Flange clamp type temperature and pressure compensation vortex street flowmeter - Google Patents

Flange clamp type temperature and pressure compensation vortex street flowmeter Download PDF

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Publication number
CN201828300U
CN201828300U CN2010205824556U CN201020582455U CN201828300U CN 201828300 U CN201828300 U CN 201828300U CN 2010205824556 U CN2010205824556 U CN 2010205824556U CN 201020582455 U CN201020582455 U CN 201020582455U CN 201828300 U CN201828300 U CN 201828300U
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CN
China
Prior art keywords
vortex
pressure
temperature
temperature sensor
flow meter
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Expired - Lifetime
Application number
CN2010205824556U
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Chinese (zh)
Inventor
张国红
张国权
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HEBEI HONGYE YONGTAI FLUID MACHINERY CO Ltd
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HEBEI HONGYE YONGTAI FLUID MACHINERY CO Ltd
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Priority to CN2010205824556U priority Critical patent/CN201828300U/en
Application granted granted Critical
Publication of CN201828300U publication Critical patent/CN201828300U/en
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Abstract

The utility model discloses a flange clamp type temperature and pressure compensation vortex street flowmeter comprising a vortex generating body, a temperature sensor, a vortex street probe, a pressure sensor and a display unit, wherein the vortex generating body is clamped between two flanges of a measuring tube and the direction of the vortex generating body is vertical to the flow direction of fluid in the measuring tube; the temperature sensor is arranged in an inner cavity of the vortex generating body; a medium through hole is arranged near the lower part of the center of the vortex generating body; the vortex street probe is arranged at the other side of the vortex generating body which is opposite to the medium through hole, and is used for detecting the frequency generated by a vortex and transforming the frequency into a voltage pulse signal; a pressure extracting hole of the pressure sensor is arranged at the downstream of the vortex street probe, and an included angle between the pressure extracting hole and the axis of the vortex is set; and the display unit is electrically connected with the vortex street probe, the temperature sensor and the pressure sensor and used for obtaining the voltage pulse signal, the temperature and the pressure detected by the vortex street probe, the temperature sensor and the pressure sensor, and treating and displaying the voltage pulse signal as well as temperature parameters and pressure parameters.

Description

Flange car coat type temperature and pressure compensation vortex shedding flow meter
Technical field
The utility model relates to the measurement instrument field, in particular to a kind of flange car coat type temperature and pressure compensation vortex shedding flow meter.
Background technology
Vortex shedding flow meter has been widely used in the flow measurement of liquid in the industry pipelines such as food, medicine, machinery, chemical industry or gas since coming out eighties of last century seventies.Why it gains great popularity, be because it have the cost performance height, measure accurately, range ratio is wide and safeguard characteristics such as simple.But common vortex shedding flow meter is the same with the flowmeter of other type, and a significant disadvantages is all arranged, and that is exactly in steam or gas flow measurement, if state of arts changes, causes the Media density value to change, and will bring very big error in dipping.
In the energy measurement work of reality, this situation runs into a lot, because each side, steam or gas in some pipeline can not be the same with design load, and is constant constant at a temperature value and force value, and very big fluctuation is always arranged.Address this problem, generally adopt and on the flowmeter downstream line, install pressure unit (or pressure transducer) and temperature sensor additional, again three road signals are sent into intelligent display respectively, carry out temperature and pressure compensation, guarantee the accurate metering of flow with effective density.Simultaneously in order to reduce the negative effect that compensation sensor brings, by the products standards requirement, the installation site of compensation sensor should be detected beyond the several leading times of Dg away from vortex street.
Yet there are problems such as installation, wiring, maintenance in existing split type temperature and pressure compensation flowmeter, and the vortex shedding flow meter of integral structure can make table body structure lengthening, causes cost higher.
The utility model content
The utility model provides a kind of flange car coat type temperature and pressure compensation vortex shedding flow meter, in order to solve the above-mentioned problems in the prior art.
The utility model provides a kind of flange car coat type temperature and pressure compensation vortex shedding flow meter, comprise: vortex generation body, vortex street probe, temperature sensor, pressure transducer, pressure port and display unit, wherein, vortex generation body is installed between two flanges of measuring tube, and its direction is perpendicular to the flow direction of measuring tube inner fluid; Temperature sensor is arranged on the inner chamber of vortex generation body, and the center of vortex generation body is by the next medium through hole that has; The vortex street probe is arranged on the opposite side relative with medium through hole on the vortex generation body, is used to detect the frequency of vortex generation and be converted into voltage pulse signal; Pressure transducer and pressure port are arranged on the downstream of vortex street probe, and pressure port becomes set angle with the angle of vortex axis, and measuring tube is installed between two flanges of process pipe; Display unit, be electrically connected with vortex street probe, temperature sensor and pressure transducer respectively, be used to obtain the detected voltage pulse signal of vortex street probe, temperature sensor and pressure transducer, temperature and pressure, and voltage pulse signal, temperature and pressure parameter are processed and displayed.
Preferably, above-mentioned set angle is 60 degree.
Preferably, the diameter of above-mentioned medium through hole is 6mm.
Preferably, above-mentioned vortex shedding flow meter also comprises: condensation coil is positioned at the upstream of pressure transducer.
Preferably, above-mentioned vortex shedding flow meter also comprises: heating radiator is positioned at the below of display unit.
Preferably, the model of said temperature sensor is PT100.
Preferably, the aforementioned display device unit comprises: shell, battery and signal plate, and wherein, battery and signal plate are electrically connected, and described shell is wrapped in outside the described signal plate.
Present embodiment does not have movable mechanical component by vortex shedding flow meter is installed between the flange of process pipe, and is simple in structure and firm, shortened the table body structure, easy for installation, the parameter of instrument can be steady in a long-term, reduce the maintenance cost in later stage, overcome problems of the prior art.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Figure 1A, Figure 1B are left view and the front views according to the flange car coat type temperature and pressure compensation vortex shedding flow meter of an embodiment of the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not paying the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Figure 1A, Figure 1B are left view and the front views according to the flange car coat type temperature and pressure compensation vortex shedding flow meter of an embodiment of the utility model.As shown in Figure 1, this flowmeter comprises: vortex generation body 1, vortex street probe 2, temperature sensor 19, pressure transducer 14, pressure port (not shown) and display unit 13, wherein, vortex generation body 1 is installed between two flanges of measuring tube, and its direction is perpendicular to the flow direction of measuring tube inner fluid; Temperature sensor 19 is arranged on the inner chamber of vortex generation body 1, and the center of vortex generation body 1 is by the next medium through hole that has; Vortex street probe 2 is arranged on the opposite side relative with medium through hole on the vortex generation body, is used to detect the frequency of vortex generation and be converted into voltage pulse signal; Pressure transducer 14 and pressure port are arranged on the downstream of vortex street probe 2, and pressure port becomes set angle with the angle of vortex axis; Display unit 13, be electrically connected with vortex street probe 2, temperature sensor 19 and pressure transducer 14 respectively, be used to obtain the detected voltage pulse signal of vortex street probe, temperature sensor and pressure transducer, temperature and pressure, and voltage pulse signal, temperature and pressure parameter are processed and displayed.
Vortex street table body (measuring tube and vortex generation body) adopts exquisite car coat type structure, temperature sensor is installed in the vortex generation intracoelomic cavity of vortex street table body, reduced vortex street table body volume, avoided simultaneously impacting, disturbed the vortex street normal signal because of temperature sensor inserts the inner cavity of pipe stream field.Simultaneously on vortex generation body fluoran stream surface, leave a medium through hole, be used for the detection of medium temperature.Because medium through hole at the opposite side of probe installation location, confirms can not cause adverse effect to vortex generation body by a large amount of tests.
Pressure transducer is installed in vortex street probe downstream position, for reducing the influence of vortex to the static pressure fluctuation, the pressure port axis is become set angle with the vortex axis.
Present embodiment does not have movable mechanical component by vortex shedding flow meter is installed between the flange of process pipe, and is simple in structure and firm, shortened the table body structure, easy for installation, the parameter of instrument can be steady in a long-term, reduce the maintenance cost in later stage, overcome problems of the prior art.
For example, above-mentioned set angle is 60 degree, can reduce the influence of vortex to the static pressure fluctuation preferably.
For example, the diameter of above-mentioned medium through hole is 6mm.
For example, above-mentioned vortex shedding flow meter also comprises: heating radiator, be positioned at the display unit below, and be used for high-temperature medium is dispelled the heat.
For example, above-mentioned vortex shedding flow meter also comprises: condensation coil 17 is positioned at the upstream of pressure transducer.When measuring high-temperature medium, the condensation coil that is increased can satisfy the pressure detection of high-temperature medium, works in allowing the serviceability temperature scope to guarantee pressure transducer.
For example, the model of said temperature sensor can be PT100, and its volume is less, is fit to present embodiment.
For example, the aforementioned display device unit comprises: shell, battery and signal plate, and wherein, battery and signal plate are electrically connected, and described shell is wrapped in outside the described signal plate.
When MEDIA FLOW is crossed when being flowed to the vortex generation body of vertical placement by it, alternately produce two row vortexs in its both sides, rear, the frequency f that vortex produces is detected by the vortex street probe, and the voltage pulse signal that output is directly proportional with flow after amplification, filtering, shaping is to change-over panel.Simultaneous temperature sensor, pressure transducer are also sent detected pressure signal and temperature signal into the vortex street display, by the internal processes computing, but parameters such as volumetric flow rate under the mass rate of display medium or the mark attitude and pressure, temperature, density, the also exportable 4~20mA normalized current signal that is directly proportional with flow.
Preferable, in the embodiment in figure 1, also comprise: stay pipe 3, register pin 4, attachment screw 5, spring washer 6, housing screw 7, spring washer 8, plain washer 9, stay pipe 10, the directed back of the body is female 11, special screw thread joint 15, and valve 16 and sealing gasket 18, being used for vortex shedding flow meter, to carry out car coat type fastening.
The foregoing description of the present utility model can be used for the flow measurement of industrial pipeline medium fluid, as multiple media such as gas, liquid, steams.Be characterized in that the pressure loss is little, range ability is big, and the precision height is subjected to fluid density, pressure, temperature, viscosity is isoparametric influences hardly when measuring the operating mode volumetric flow rate.No moving machinery part in the foregoing description, it is simple in structure that maintenance cost is few and firm, easy for installation, and the instrument parameter can be steady in a long-term.The foregoing description adopts piezoelectric stress formula sensor, and the reliability height can be worked in-20 ℃~+ 350 ℃ operating temperature range.The foregoing description can adopt lithium battery power supply, also can external 24VDC, can on-the-spot direct-reading parameters, and also can be with the output of 4~20mA normalized current signal simultaneously, also can network with computer control system, be a kind of more advanced, desirable flow instrument.
One of ordinary skill in the art will appreciate that: accompanying drawing is the synoptic diagram of an embodiment, and module in the accompanying drawing or flow process might not be that enforcement the utility model is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of the utility model embodiment technical scheme.

Claims (7)

1. a flange car coat type temperature and pressure compensation vortex shedding flow meter is characterized in that, comprising: vortex generation body, vortex street probe, temperature sensor, pressure transducer, pressure port and display unit, wherein
Described vortex generation body is installed between two flanges of measuring tube, and its direction is perpendicular to the flow direction of described measuring tube inner fluid;
Described temperature sensor is arranged on the inner chamber of described vortex generation body, and the center of described vortex generation body is by the next medium through hole that has;
Described vortex street probe is arranged on the opposite side relative with described medium through hole on the described vortex generation body, is used to detect the frequency of vortex generation and be converted into voltage pulse signal;
Described pressure transducer and described pressure port are arranged on the downstream of described vortex street probe, and described pressure port becomes set angle with the angle of vortex axis;
Described display unit, be electrically connected with described vortex street probe, described temperature sensor and described pressure transducer respectively, be used to obtain described vortex street probe, described temperature sensor and the detected voltage pulse signal of described pressure transducer, temperature and pressure, and described voltage pulse signal, temperature and pressure parameter are processed and displayed.
2. vortex shedding flow meter according to claim 1 is characterized in that, described set angle is 60 degree.
3. vortex shedding flow meter according to claim 1 is characterized in that, the diameter of described medium through hole is 6mm.
4. vortex shedding flow meter according to claim 1 is characterized in that, also comprises:
Condensation coil is positioned at the upstream of described pressure transducer.
5. vortex shedding flow meter according to claim 1 is characterized in that, the model of described temperature sensor is PT100.
6. vortex shedding flow meter according to claim 1 is characterized in that, described display unit comprises: shell, battery and signal plate, wherein
Described battery and described signal plate are electrically connected, and described shell is wrapped in outside the described signal plate.
7. vortex shedding flow meter according to claim 1 is characterized in that, also comprises:
Heating radiator is positioned at the below of described display unit.
CN2010205824556U 2010-10-26 2010-10-26 Flange clamp type temperature and pressure compensation vortex street flowmeter Expired - Lifetime CN201828300U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205824556U CN201828300U (en) 2010-10-26 2010-10-26 Flange clamp type temperature and pressure compensation vortex street flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205824556U CN201828300U (en) 2010-10-26 2010-10-26 Flange clamp type temperature and pressure compensation vortex street flowmeter

Publications (1)

Publication Number Publication Date
CN201828300U true CN201828300U (en) 2011-05-11

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104089672A (en) * 2014-07-16 2014-10-08 深圳市博瑞兰特科技有限公司 Precision temperature density compensation flowmeter
CN105181032A (en) * 2015-08-17 2015-12-23 合肥工业大学 High temperature resistance digital two-wire system HART intelligent vortex flowmeter
CN110987092A (en) * 2019-12-27 2020-04-10 东北石油大学 Multiphase flow vortex shedding flowmeter in pit
CN111006726A (en) * 2019-12-11 2020-04-14 东北石油大学 Underground vortex street flowmeter for underground charging type intelligent water distributor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104089672A (en) * 2014-07-16 2014-10-08 深圳市博瑞兰特科技有限公司 Precision temperature density compensation flowmeter
CN105181032A (en) * 2015-08-17 2015-12-23 合肥工业大学 High temperature resistance digital two-wire system HART intelligent vortex flowmeter
CN105181032B (en) * 2015-08-17 2018-07-13 合肥工业大学 The digital two-wire system HART intelligent vortex shedding flowmeters of high temperature resistance
CN111006726A (en) * 2019-12-11 2020-04-14 东北石油大学 Underground vortex street flowmeter for underground charging type intelligent water distributor
CN110987092A (en) * 2019-12-27 2020-04-10 东北石油大学 Multiphase flow vortex shedding flowmeter in pit

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Granted publication date: 20110511

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