CN107782381A - A kind of flowmeter with nozzle arrangements - Google Patents
A kind of flowmeter with nozzle arrangements Download PDFInfo
- Publication number
- CN107782381A CN107782381A CN201610755470.8A CN201610755470A CN107782381A CN 107782381 A CN107782381 A CN 107782381A CN 201610755470 A CN201610755470 A CN 201610755470A CN 107782381 A CN107782381 A CN 107782381A
- Authority
- CN
- China
- Prior art keywords
- connecting tube
- plate body
- orifice plate
- packing
- flowmeter
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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 kind of flowmeter with nozzle arrangements, including connecting tube, straight length, sensor, two packing circles and two pressure pipes, two connecting tubes are integral by bolt connection, the connecting tube other end is logical to be connected with straight length, packing circle is provided with the end face of two connecting tubes, orifice plate plate body is arranged between two packing circles, multiple nozzles are provided with orifice plate plate body, the air flue connected with inside connecting tube is provided with packing circle side, pressure pipe one end connects with air flue, the pressure pipe other end connects with sensor, the dashpot connected with inside connecting tube is provided with packing circle opposite side inwall, the diminution section that nozzle is successively decreased by the internal diameter being sequentially connected along fluid flow direction, flat segments and internal diameter flow to incremental expanding reach along fluid and formed.Connected between connecting tube and connecting tube, between connecting tube and straight length using flange, substantially increase practicality of the connecting tube in different types of sensor measurement process, facilitate staff's Fast Installation to dismantle.
Description
Technical field
The present invention relates to field of flow measurement, in particular to a kind of flowmeter with nozzle arrangements.
Background technology
Differential pressure flowmeter with its technology maturation, it is simple in construction, reliable and stable, using face it is wide the characteristics of occupy flowmeter and make
Use forefront.Differential pressure flowmeter is that basis is installed in pipeline differential pressure caused by flow detection part, known fluid condition and inspection
The physical dimension of part and pipeline is surveyed to measure the instrument of flow；But the measuring range scope of this differential pressure flowmeter is narrower,
Because flow instrument signal（Differential pressure）In chi square function relation, the range ability of flow measurement is so limited.At present, spray
The most frequently used form of nozzle of mouth flowmeter has calibrating nozzle, Long Nozzle, Venturi nozzle etc., these throttling form generally existings
Following shortcoming：The repeatability of measurement, accuracy mean level in flowmeter, because the factor of many influences intricate, essence
Degree is difficult to improve；In-site installation condition requires higher, it is necessary to longer straight length, it is difficult to meets, the pressure loss is bigger.
The content of the invention
It is an object of the invention to provide a kind of flowmeter with nozzle arrangements, improves the scope of fluid measurement, extends stream
The service life of gauge.
The purpose of the present invention is achieved through the following technical solutions：
A kind of flowmeter with nozzle arrangements, including flanged (FLGD) connecting tube, straight length, sensor, two packing circles and two
Individual pressure pipe, two adjacent one end ends of flanged (FLGD) connecting tube are integral by bolt connection, and the connecting tube other end leads to
Cross ring flange to be connected with straight length, packing circle, orifice plate plate are respectively arranged with the end face that two connecting tubes are oppositely arranged
Body is arranged between two packing circles, is provided with multiple nozzles on orifice plate plate body, and be provided with packing circle side with inside connecting tube
The air flue of connection, pressure pipe one end connect with air flue, and the pressure pipe other end connects with sensor, on packing circle opposite side inwall
The dashpot with being connected inside connecting tube is provided with, and two dashpots are corresponding with two air flues and are symmetrically distributed in orifice plate plate body
Both sides；The nozzle flows to the diminution section, flat segments and the internal diameter that successively decrease along fluid stream by the internal diameter being sequentially connected along fluid
Formed to incremental expanding reach, the rectangular cross-section of the dashpot, and be provided with two inwalls above and below dashpot it is multiple simultaneously
Row is distributed and section is the reflection runner of circular arc.
The present invention is entered by multiple nozzles on orifice plate plate in use, fluid is entered in connecting tube by straight length
In another connecting tube, and now a fluid stream forms local contraction on front side of orifice plate plate body, and then causes the flow velocity increase of fluid, quiet
Pressure is reduced, i.e., pressure difference is generated between the front side of orifice plate plate body and rear side, and fluid flow is bigger, and caused pressure difference is bigger,
Now sensor passes through the measurement of pressure pipe and air flue to orifice plate plate body front and rear sides pressure, you can calculates the flow of fluid
Size.Wherein, the multiple nozzles set on orifice plate plate body flow to the diminution section successively decreased along fluid by the internal diameter being sequentially connected, put down
Straight section and internal diameter flow to incremental expanding reach along fluid and formed, and fluid in nozzle interior by accelerating, at the uniform velocity and slow down
After three motion states, now the flow field before and after orifice plate plate body is tended to balance, and avoids orifice plate plate body front and rear sides from vortex occur, shake
Dynamic and signal noise, substantially increase the stability in flow field；And between connecting tube and connecting tube, between connecting tube and straight length
Connected using flange, substantially increase practicality of the connecting tube in different types of sensor measurement process, convenient work
Personnel's Fast Installation is dismantled.And the dashpot being opened in packing circle side wall will can be impacted on orifice plate plate body front and rear sides
Fluid guiding is opened, and is reduced the impact dynamics on the end face of orifice plate plate body front and rear sides, is reduced in the diminution section and expanding reach of nozzle
The wadding stream shearing force being subject to, realize the purpose for extending orifice plate plate body service life.
Wherein, after being had respectively entered positioned at the fluid of orifice plate plate body front and rear sides in dashpot, fluid is by buffering
Continuous bounce-back on groove inwall is to cause the kinetic energy of its own to be gradually reduced, and the section of dashpot is arranged to square by the present invention
Shape, you can so that incident flow of the fluid in dashpot is mutually collided with contrajet so that kinetic energy reduces, to avoid excessive
Contrajet impacts to buffering cell wall again, reduces the yield of noise in dashpot, and above and below dashpot in two
The reflection runner that multiple being distributed side by side and section is circular arc is provided with wall, adds the reflective surface area of fluid, is accelerated pair
The removal of orifice plate plate body front and rear sides pressure suddenly, ensure that the permanent service life of orifice plate plate body.
The rounded array of multiple nozzles and divide equally on orifice plate plate body.Equally distributed multiple nozzles can reduce orifice plate
The wadding stream shearing force and form the possibility being vortexed that plate body is directly subject to, reduce dynamic loss of energy, orifice plate are protected realizing
While plate body, the purpose of energy-conservation is realized.
The junction of the orifice plate plate body both ends end and packing circle is provided with the L-type sealing gasket for sealing.For side
Just application of the connecting tube between different types of sensor, orifice plate plate body are clamped in by the cooperation of bolt and packing circle
Between two connecting tubes, while the part that packing circle contacts respectively on the both ends of orifice plate plate body is carried out using the sealing gasket of L-type
Sealing, being fully sealed in connecting tube is realized, the data collected in ensureing two pressure pipes in air flue are accurate.
The present invention compared with prior art, has the following advantages and advantages：
1st, the dashpot that the present invention is opened in packing circle side wall can draw the fluid impacted on orifice plate plate body front and rear sides
Lead out, reduce the impact dynamics on the end face of orifice plate plate body front and rear sides, reduce what is be subject in the diminution section and expanding reach of nozzle
Wadding stream shearing force, realizes the purpose for extending orifice plate plate body service life；
2nd, the equally distributed multiple nozzles of the present invention can reduce the wadding stream shearing force and formation vortex that orifice plate plate body is directly subject to
Possibility, reduce dynamic loss of energy, realize protect orifice plate plate body while, realize the purpose of energy-conservation；
3rd, the present invention passes through bolt and packing for convenience of application of the connecting tube between different types of sensor, orifice plate plate body
The cooperation of circle is clamped between two connecting tubes, while will be insulated respectively on the both ends of orifice plate plate body using the sealing gasket of L-type
The part of circle contact is sealed, and realizes being fully sealed in connecting tube, is collected in ensureing two pressure pipes in air flue
Data are accurate.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the enlarged drawing of dashpot.
Mark and corresponding parts title in accompanying drawing：
1- connecting tubes, 2- bolts, 3- orifice plates plate body, 4- air flues, 5- inductors, 6- pressure pipes, 7- sealing gaskets, 8- packings circle, 9-
Dashpot, 91- reflections runner, 10- ring flanges, 11- straight lengths.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment include flanged (FLGD) connecting tube 1, straight length 11, sensor, two packing circle 8 with
And two pressure pipes 6, two adjacent one end ends of flanged (FLGD) connecting tube 1 are linked into an integrated entity by bolt 2, connecting tube 1
The other end is connected by ring flange 10 with straight length 11, is respectively arranged with the end face that two connecting tubes 1 are oppositely arranged
Packing circle 8, orifice plate plate body 3 are arranged between two packing circles 8, and multiple nozzles are provided with orifice plate plate body 3, and in packing circle 8 one
Side is provided with the air flue 4 connected with the inside of connecting tube 1, and the one end of pressure pipe 6 connects with air flue 4, and the other end of pressure pipe 6 connects with sensor
It is logical, the dashpot 9 connected with inside connecting tube 1, and two dashpots 9 and two gas are provided with packing 8 opposite side inwalls of circle
Road 4 is corresponding and is symmetrically distributed in the both sides of orifice plate plate body 3；The nozzle is successively decreased by the internal diameter being sequentially connected along fluid flow direction
Diminution section, flat segments and internal diameter flow to incremental expanding reach along fluid and formed, the rectangular cross-section of the dashpot 9, and
Dashpot is provided with the reflection runner 91 that multiple being distributed side by side and section is circular arc on two inwalls about 9.
The present invention is in use, fluid is entered in connecting tube 1 by straight length 11, by multiple nozzles entrance on orifice plate plate
Into another connecting tube 1, and now a fluid stream forms local contraction in the front side of orifice plate plate body 3, and then the flow velocity of fluid is increased
Add, static pressure reduces, i.e., pressure difference is generated between the front side of orifice plate plate body 3 and rear side, fluid flow is bigger, caused pressure difference
Bigger, now sensor passes through the measurement of pressure pipe 6 and air flue 4 to the front and rear sides pressure of orifice plate plate body 3, you can calculates stream
The uninterrupted of body.Wherein, the multiple nozzles set on orifice plate plate body 3 successively decrease by the internal diameter being sequentially connected along fluid flow direction
Reduce section, flat segments and internal diameter flow to incremental expanding reach along fluid and formed, and fluid nozzle interior by accelerating, at the uniform velocity
And after three motion states of slowing down, now the flow field before and after orifice plate plate body 3 is tended to balance, and avoids the front and rear sides of orifice plate plate body 3
There is vortex, vibration and signal noise, substantially increase the stability in flow field；And between connecting tube 1 and connecting tube 1, connection
Connected between pipe 1 and straight length 11 using flange, substantially increase connecting tube 1 in different types of sensor measurement process
Practicality, facilitate staff's Fast Installation dismantle.And the dashpot 9 being opened in packing 8 side walls of circle will can impact
Fluid guiding on the front and rear sides of orifice plate plate body 3 is opened, and is reduced the impact dynamics on the front and rear sides end face of orifice plate plate body 3, is reduced spray
The wadding stream shearing force being subject in the diminution section and expanding reach of mouth, realize the purpose for extending the service life of orifice plate plate body 3.
Wherein, after being had respectively entered positioned at the fluid of the front and rear sides of orifice plate plate body 3 in dashpot 9, fluid passes through slow
Continuous bounce-back on the inwall of jet-bedding 9 is to cause the kinetic energy of its own to be gradually reduced, and the section of dashpot 9 is arranged to by the present invention
Rectangle, you can so that incident flow of the fluid in dashpot 9 mutually collided with contrajet it is excessive so that kinetic energy reduces, to avoid
Contrajet the wall of dashpot 9 is impacted again, reduce the yield of noise in dashpot 9, and in dashpot two about 9
The reflection runner 91 that multiple being distributed side by side and section is circular arc is provided with individual inwall, the reflective surface area of fluid is added, adds
The fast removal to the front and rear sides of orifice plate plate body 3 pressure suddenly, it ensure that the permanent service life of orifice plate plate body 3.
In the present embodiment, the rounded array of the multiple nozzles and divide equally on orifice plate plate body 3.Equally distributed multiple sprays
Mouth can reduce the wadding that orifice plate plate body 3 is directly subject to and flow shearing force and form the possibility of vortex, reduce dynamic loss of energy,
While realizing protection orifice plate plate body 3, the purpose of energy-conservation is realized.
The junction of the both ends end of orifice plate plate body 3 and packing circle 8 is provided with the L-type sealing gasket 7 for sealing.For
Facilitate application of the connecting tube 1 between different types of sensor, orifice plate plate body 3 passes through bolt 2 and the cooperation quilt of packing circle 8
It is clamped between two connecting tubes 1, while the contact of circle 8 will be insulated on the both ends of orifice plate plate body 3 respectively using the sealing gasket 7 of L-type
Part sealed, realize being fully sealed in connecting tube 1, the data collected in ensureing two pressure pipes 6 in air flue 4
Accurately.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (3)
1. a kind of flowmeter with nozzle arrangements, including flanged (FLGD) connecting tube（1）, straight length（11）, sensor（10）, two
Packing circle（8）And two pressure pipes（6）, it is characterised in that：Two flanged (FLGD) connecting tubes（1）Adjacent one end end
By bolt（2）Link into an integrated entity, connecting tube（1）The other end passes through ring flange（10）With straight length（11）Connection, described in two
Connecting tube（1）Packing circle is respectively arranged with the end face being oppositely arranged（8）, orifice plate plate body（3）It is arranged on two packing circles（8）It
Between, orifice plate plate body（3）On be provided with multiple nozzles, and enclosed in packing（8）Side is provided with and connecting tube（1）The air flue of inside connection
（4）, pressure pipe（6）One end and air flue（4）Connection, pressure pipe（6）The other end and sensor（10）Connection, enclosed in packing（8）Separately
It is provided with the inwall of side and connecting tube（1）The dashpot of inside connection（9）, and two dashpots（9）With two air flues（4）Relatively
Orifice plate plate body and should be symmetrically distributed in（3）Both sides；The diminution that the nozzle is successively decreased by the internal diameter being sequentially connected along fluid flow direction
Section, flat segments and internal diameter flow to incremental expanding reach along fluid and formed, the dashpot（9）Rectangular cross-section, and slow
Jet-bedding（9）The reflection runner that multiple being distributed side by side and section is circular arc is provided with upper and lower two inwalls（91）.
A kind of 2. flowmeter with nozzle arrangements according to claim 1, it is characterised in that：Multiple nozzles are rounded
Array and divide equally in orifice plate plate body（3）On.
A kind of 3. flowmeter with nozzle arrangements according to claim 1, it is characterised in that：In the orifice plate plate body（3）
Both ends end is enclosed with packing（8）Junction be provided with L-type sealing gasket for sealing（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610755470.8A CN107782381A (en) | 2016-08-30 | 2016-08-30 | A kind of flowmeter with nozzle arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610755470.8A CN107782381A (en) | 2016-08-30 | 2016-08-30 | A kind of flowmeter with nozzle arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107782381A true CN107782381A (en) | 2018-03-09 |
Family
ID=61440196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610755470.8A Withdrawn CN107782381A (en) | 2016-08-30 | 2016-08-30 | A kind of flowmeter with nozzle arrangements |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107782381A (en) |
-
2016
- 2016-08-30 CN CN201610755470.8A patent/CN107782381A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180309 |
|
| WW01 | Invention patent application withdrawn after publication |