CN105928571A - Nozzle type flow meter - Google Patents
Nozzle type flow meter Download PDFInfo
- Publication number
- CN105928571A CN105928571A CN201610445263.2A CN201610445263A CN105928571A CN 105928571 A CN105928571 A CN 105928571A CN 201610445263 A CN201610445263 A CN 201610445263A CN 105928571 A CN105928571 A CN 105928571A
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- CN
- China
- Prior art keywords
- sections
- orifice plate
- plate body
- nozzle
- connecting tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
- G01F1/42—Orifices or nozzles
Abstract
The invention discloses a nozzle type flow meter which comprises two connecting pipes, straight pipes sections, a sensor, two sealing space rings and two pressure tapping pipes. The two connecting pipes are integrally connected with each other by bolts, the other ends of the connecting pipes are connected with the straight pipe sections, the sealing space rings are arranged on the end surfaces of the two connecting pipes, an orifice plate is arranged between the two sealing space rings, a plurality of nozzles are arranged on the orifice plate, an air channel which is communicated with the inside of the corresponding connecting pipe is arranged on one side of each sealing space ring, one end of each pressure tapping pipe is communicated with the corresponding air channel, the other end of each pressure tapping pipe is communicated with the sensor, a buffer groove which is communicated with the inside of the corresponding connecting pipe is formed in the inner wall of the other side of each sealing space ring, the nozzles comprise shrinkage sections, straight sections and expansion sections, the shrinkage sections, the straight sections and the expansion sections of the nozzles are sequentially connected with one another, the inner diameters of the shrinkage sections of the nozzles are gradually reduced along the flow direction of fluid, and the inner diameters of the expansion sections of the nozzles are gradually increased along the flow direction of the fluid. The nozzle type flow meter has the advantages that the connecting pipes are connected with each other by flanges, the connecting pipes and the straight pipe sections are connected with one another by flanges, accordingly, the practicality of the connecting pipes in measuring procedures implemented by the aid of different types of sensors can be greatly improved, and the nozzle type flow meter can be conveniently quickly mounted and detached by staffs.
Description
Technical field
The present invention relates to field of flow measurement, specifically refer to a kind of nozzle meter.
Background technology
Differential pressure flowmeter occupies effusion meter use prostatitis with its technology maturation, simple in construction, feature reliable and stable, use face width.Differential pressure flowmeter is according to the instrument being installed on differential pressure, known fluid condition and detection piece that flow detection part in pipeline the produces physical dimension with pipeline and measuring flow；But, the measurement range ability of this differential pressure flowmeter is narrower, because flow instrument signal (differential pressure), in chi square function relation, thus limits the range ability of flow measurement.At present, the form of nozzle that nozzle flowmeter is the most frequently used has calibrating nozzle, Long Nozzle, Venturi nozzle etc., these throttling forms generally have a disadvantage in that the repeatability of measurement, degree of accuracy mean level in effusion meter, and owing to many factor impacts are intricate, precision is difficult to improve；In-site installation condition requires higher, needs longer straight length, it is difficult to meeting, the pressure loss is bigger.
Summary of the invention
It is an object of the invention to provide a kind of nozzle meter, improve the scope of fluid measurement, extend the service life of effusion meter.
The purpose of the present invention is achieved through the following technical solutions:
A kind of nozzle meter, including flanged (FLGD) connecting tube, straight length, sensor, two packing circles and two pressure pipes, one end end by bolts that two flanged (FLGD) described connecting tubes are adjacent links into an integrated entity, the connecting tube other end is connected with straight length by ring flange, the end face that two described connecting tubes are oppositely arranged is respectively arranged with packing circle, orifice plate plate body is arranged between two packing circles, multiple nozzle is had on orifice plate plate body, and have and the air flue connected inside connecting tube in packing circle side, pressure pipe one end connects with air flue, the pressure pipe other end connects with sensor, packing circle opposite side inwall has and the dashpot connected inside connecting tube, and two dashpots and two air flues corresponding and be symmetrically distributed in the both sides of orifice plate plate body；The expanding reach that described nozzle is flowed to be incremented by along fluid along the section of reducing, flat segments and the internal diameter that fluid flows to successively decrease by the internal diameter being sequentially connected with is constituted.When the present invention uses, fluid is entered in connecting tube by straight length, multiple nozzles on orifice plate plate enter in another connecting tube, and now a fluid stream forms local contraction on front side of orifice plate plate body, and then the flow velocity of fluid is increased, static pressure reduces, i.e. between the front side and rear side of orifice plate plate body, create pressure reduction, fluid flow is the biggest, the pressure reduction produced is the biggest, now sensor is by pressure pipe and air flue to the measurement of pressure at both sides before and after orifice plate plate body, can calculate the uninterrupted of fluid.Wherein, the expanding reach that the multiple nozzles arranged on orifice plate plate body are flowed to be incremented by along fluid along the section of reducing, flat segments and the internal diameter that fluid flows to successively decrease by the internal diameter being sequentially connected with is constituted, and fluid in nozzle interior by accelerating, at the uniform velocity and slow down after three kinestates, now tend to balance in the flow field before and after orifice plate plate body, before and after avoiding orifice plate plate body, there is eddy current, vibration and signal noise in both sides, substantially increase the stability in flow field；And between connecting tube and connecting tube, between connecting tube and straight length, all use Flange joint, substantially increase connecting tube practicality during different types of sensor measurement, facilitate staff's Fast Installation to dismantle.And be opened in the dashpot in packing circle sidewall and the fluid impacted before and after orifice plate plate body on both sides can be guided and open, impact dynamics on the end face of both sides before and after reduction orifice plate plate body, reduce the wadding stream shearing force being subject on the section of reducing of nozzle and expanding reach, it is achieved extend the purpose in orifice plate plate body service life.
Multiple rounded arrays of described nozzle and dividing equally on orifice plate plate body.Equally distributed multiple nozzle can reduce the wadding stream shearing force that orifice plate plate body is directly subject to and the probability forming eddy current, reduces dynamic loss of energy, while realizing protection orifice plate plate body, it is achieved that energy-conservation purpose.
The junction of end, described orifice plate plate body two ends with packing circle is provided with the L-type sealing gasket for sealing.For convenience of connecting tube application between different types of sensor, orifice plate plate body is clamped between two connecting tubes by the cooperation of bolt and packing circle, the part of packing circle contact respectively on the two ends of orifice plate plate body is sealed by the sealing gasket simultaneously utilizing L-type, realize fully sealing in connecting tube, it is ensured that two pressure pipes in air flue in the data that collect accurate.
The present invention compared with prior art, has such advantages as and beneficial effect:
The fluid impacted before and after orifice plate plate body on both sides can be guided and open by the dashpot during 1, the present invention is opened in packing circle sidewall, impact dynamics on the end face of both sides before and after reduction orifice plate plate body, reduce the wadding stream shearing force being subject on the section of reducing of nozzle and expanding reach, it is achieved extend the purpose in orifice plate plate body service life；
2, the equally distributed multiple nozzles of the present invention can reduce the wadding stream shearing force that orifice plate plate body is directly subject to and the probability forming eddy current, reduces dynamic loss of energy, while realizing protection orifice plate plate body, it is achieved that energy-conservation purpose；
3, the present invention is for convenience of connecting tube application between different types of sensor, orifice plate plate body is clamped between two connecting tubes by the cooperation of bolt and packing circle, the part of packing circle contact respectively on the two ends of orifice plate plate body is sealed by the sealing gasket simultaneously utilizing L-type, realize fully sealing in connecting tube, it is ensured that two pressure pipes in air flue in the data that collect accurate.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram.
Labelling and corresponding parts title in accompanying drawing:
1-connecting tube, 2-bolt, 3-orifice plate plate body, 4-air flue, 5-induction apparatus, 6-pressure pipe, 7-sealing gasket, 8-insulate circle, 9-dashpot, 10-ring flange, 11-straight length.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, not as a limitation of the invention.
Embodiment 1
nullAs shown in Figure 1，The present embodiment includes flanged (FLGD) connecting tube 1、Straight length 11、Sensor、Two packing circles 8 and two pressure pipes 6，One end end by bolts 2 that two flanged (FLGD) described connecting tubes 1 are adjacent links into an integrated entity，Connecting tube 1 other end is connected with straight length 11 by ring flange 10，The end face that two described connecting tubes 1 are oppositely arranged is respectively arranged with packing circle 8，Orifice plate plate body 3 is arranged between two packing circles 8，Multiple nozzle is had on orifice plate plate body 3，And have and the air flue 4 connected inside connecting tube 1 in packing circle 8 sides，Pressure pipe 6 one end connects with air flue 4，Pressure pipe 6 other end connects with sensor，Packing circle 8 opposite side inwalls have and the dashpot 9 connected inside connecting tube 1，And two dashpots 9 are corresponding with two air flues 4 and are symmetrically distributed in the both sides of orifice plate plate body 3；The expanding reach that described nozzle is flowed to be incremented by along fluid along the section of reducing, flat segments and the internal diameter that fluid flows to successively decrease by the internal diameter being sequentially connected with is constituted.When the present invention uses, fluid is entered in connecting tube 1 by straight length 11, multiple nozzles on orifice plate plate enter in another connecting tube 1, and now a fluid stream forms local contraction on front side of orifice plate plate body 3, and then the flow velocity of fluid is increased, static pressure reduces, i.e. between the front side and rear side of orifice plate plate body 3, create pressure reduction, fluid flow is the biggest, the pressure reduction produced is the biggest, now sensor measurement to orifice plate plate body 3 pressure at both sides front and back by pressure pipe 6 and air flue 4, can calculate the uninterrupted of fluid.Wherein, the expanding reach that the multiple nozzles arranged on orifice plate plate body 3 are flowed to be incremented by along fluid along the section of reducing, flat segments and the internal diameter that fluid flows to successively decrease by the internal diameter being sequentially connected with is constituted, and fluid in nozzle interior by accelerating, at the uniform velocity and slow down after three kinestates, now tend to balance in the flow field before and after orifice plate plate body 3, before and after avoiding orifice plate plate body 3, there is eddy current, vibration and signal noise in both sides, substantially increase the stability in flow field；And between connecting tube 1 and connecting tube 1, between connecting tube 1 and straight length 11, all use Flange joint, substantially increase the connecting tube 1 practicality during different types of sensor measurement, facilitate staff's Fast Installation to dismantle.And be opened in the dashpot 9 in packing circle 8 sidewalls and the fluid guiding impacted on orifice plate plate body 3 both sides front and back can be opened, reduce the impact dynamics on orifice plate plate body 3 both sides end face front and back, the wadding stream shearing force being subject in the section of reducing of reduction nozzle and expanding reach, it is achieved extend the purpose in orifice plate plate body 3 service life.
In the present embodiment, multiple rounded arrays of described nozzle and dividing equally on orifice plate plate body 3.Equally distributed multiple nozzle can reduce the wadding stream shearing force that orifice plate plate body 3 is directly subject to and the probability forming eddy current, reduces dynamic loss of energy, while realizing protection orifice plate plate body 3, it is achieved that energy-conservation purpose.
The junction of end, described orifice plate plate body 3 two ends with packing circle 8 is provided with the L-type sealing gasket 7 for sealing.For convenience of the connecting tube 1 application between different types of sensor, orifice plate plate body 3 is clamped between two connecting tubes 1 by the cooperation of bolt 2 and packing circle 8, the part of packing circle 8 contact respectively on the two ends of orifice plate plate body 3 is sealed by the sealing gasket 7 simultaneously utilizing L-type, realize fully sealing in connecting tube 1, it is ensured that two pressure pipes 6 in air flue 4 in the data that collect accurate.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect are further described; it is it should be understood that; the foregoing is only the detailed description of the invention of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (3)
- null1. a nozzle meter，Including flanged (FLGD) connecting tube (1)、Straight length (11)、Sensor (10)、Two packings circle (8) and two pressure pipes (6)，It is characterized in that: the adjacent one end end by bolts (2) of two flanged (FLGD) described connecting tubes (1) links into an integrated entity，Connecting tube (1) other end is connected with straight length (11) by ring flange (10)，The end face that two described connecting tubes (1) are oppositely arranged is respectively arranged with packing circle (8)，Orifice plate plate body (3) is arranged between two packings circle (8)，Orifice plate plate body has multiple nozzle on (3)，And have the air flue (4) that connect internal with connecting tube (1) in packing circle (8) side，Pressure pipe (6) one end connects with air flue (4)，Pressure pipe (6) other end connects with sensor (10)，Packing circle (8) opposite side inwall has the dashpot (9) that connect internal with connecting tube (1)，And two dashpots (9) are corresponding with two air flues (4) and are symmetrically distributed in the both sides of orifice plate plate body (3)；The expanding reach that described nozzle is flowed to be incremented by along fluid along the section of reducing, flat segments and the internal diameter that fluid flows to successively decrease by the internal diameter being sequentially connected with is constituted.
- A kind of nozzle meter the most according to claim 1, it is characterised in that: multiple rounded arrays of described nozzle and dividing equally on orifice plate plate body (3).
- A kind of nozzle meter the most according to claim 1, it is characterised in that: the junction of described orifice plate plate body (3) end, two ends with packing circle (8) is provided with the L-type sealing gasket (7) for sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610445263.2A CN105928571A (en) | 2016-06-21 | 2016-06-21 | Nozzle type flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610445263.2A CN105928571A (en) | 2016-06-21 | 2016-06-21 | Nozzle type flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105928571A true CN105928571A (en) | 2016-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610445263.2A Pending CN105928571A (en) | 2016-06-21 | 2016-06-21 | Nozzle type flow meter |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040016302A1 (en) * | 2002-07-24 | 2004-01-29 | Boaz Misholi | Respiratory flow sensor |
| CN201034650Y (en) * | 2007-04-20 | 2008-03-12 | 项家从 | Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor |
| CN103674128A (en) * | 2012-08-28 | 2014-03-26 | 霍尼韦尔国际公司 | Flow sensor with multi-position laminar flow element having integrated bypass channels |
| CN204575146U (en) * | 2015-04-28 | 2015-08-19 | 江苏华海测控技术有限公司 | Integration welded type ring casing pressure orifice plate |
| CN105352561A (en) * | 2015-12-08 | 2016-02-24 | 重庆联大仪表有限公司 | Flowmeter with buffer function |
| CN105526980A (en) * | 2016-01-15 | 2016-04-27 | 江苏华海测控技术有限公司 | Multi-nozzle balanced flow meter |
-
2016
- 2016-06-21 CN CN201610445263.2A patent/CN105928571A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040016302A1 (en) * | 2002-07-24 | 2004-01-29 | Boaz Misholi | Respiratory flow sensor |
| CN201034650Y (en) * | 2007-04-20 | 2008-03-12 | 项家从 | Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor |
| CN103674128A (en) * | 2012-08-28 | 2014-03-26 | 霍尼韦尔国际公司 | Flow sensor with multi-position laminar flow element having integrated bypass channels |
| CN204575146U (en) * | 2015-04-28 | 2015-08-19 | 江苏华海测控技术有限公司 | Integration welded type ring casing pressure orifice plate |
| CN105352561A (en) * | 2015-12-08 | 2016-02-24 | 重庆联大仪表有限公司 | Flowmeter with buffer function |
| CN105526980A (en) * | 2016-01-15 | 2016-04-27 | 江苏华海测控技术有限公司 | Multi-nozzle balanced flow meter |
Non-Patent Citations (2)
| Title |
|---|
| 帕姆利: "《机械设计零件与实用装置图册》", 30 April 2013, 机械工业出版社 * |
| 熊德仙等: "《化工测量及仪表》", 31 December 1985, 化学工业出版社 * |
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Application publication date: 20160907 |