CN101329189A - Turning plate type flowmeters - Google Patents
Turning plate type flowmeters Download PDFInfo
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- CN101329189A CN101329189A CNA2007100696910A CN200710069691A CN101329189A CN 101329189 A CN101329189 A CN 101329189A CN A2007100696910 A CNA2007100696910 A CN A2007100696910A CN 200710069691 A CN200710069691 A CN 200710069691A CN 101329189 A CN101329189 A CN 101329189A
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- turning plate
- cover plate
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Abstract
The invention discloses a flap flowmeter that comprises a shell, a signal receiver and a flow monitor are arranged on the shell, a rotor is arranged inside a cylindrical cavity of the shell, and the shell is provided with a liquid inlet and a liquid outlet that are communicated with the cavity and arranged relatively eccentric to the center of circle of the rotor; a signal generator is arranged on the rotor, a blade with forward flow flapping direction and reverse flow lodging direction is articulated with the outer edge of the rotor and arranged along the axial direction of the rotor, the length of the blade is equal to the height of the cylindrical cavity, a stopper is arranged in the blade flapping direction at the outer edge of the rotor, and the inner wall of the cavity has the shape that is tangential with the outer end of the blade.
Description
(1) technical field
The present invention relates to a kind of flowmeter.
(2) background technology
Existing flowmeter is very big at measurement low discharge time error, and in fact the metering of low discharge is a difficult problem of generally acknowledging.Reason is that flowmeter needs rotor rotation to come perception numerical value, and when flow was little, the power that promotes rotor was very little, and the rotor resistance of existing flowmeter is all bigger, and the sensitivity degree is low, and low discharge often is difficult to promote rotor, cause not energy measurement, even if it is also very big to have promoted relative error.
The resistance major part of the rotor of vane-wheel type flowmeter is to be produced by the liquid resistance of blade when the return.Common vane-wheel type flowmeter is just like tap water meter, the blade of its impeller can not draw in, the opening angle of blade is constant in the rotor rotation process, causes the big resistance that hinders rotor rotation when blade is in the return, causes complete machine to walk about freely, measure inaccurate, insensitive.
(3) summary of the invention
For solve existing vane-wheel type flowmeter walk about smooth, metering is inaccurate, insensitive technical matters, the present invention will provide that a kind of rotary resistance is little, the smoothness of walking about, accurate measurement, highly sensitive flowmeter.
Turning plate type flowmeters of the present invention comprises housing, signal receiver is housed on the housing, flow indicator, in the cylindrical cavity of housing rotor is housed, have inlet and liquid outlet on the housing, inlet and liquid outlet are communicated with described cavity, inlet and liquid outlet are with respect to the center of circle arranged off-centre of rotor, signal generator is housed on the rotor, it is characterized in that described rotor outer rim is hinged with blade, downbeam is that blade is dug direction, countercurrent direction is a blade lodging direction, described blade is axial arranged along rotor, the length of blade equals the height of described cylindrical cavity, and described rotor outer rim also is provided with the block of digging direction at blade, and the inwall of described cavity has the shape tangent with the outer end of blade.
Be radially when preferably, described blade and described block offset.
Preferably, the outer rim of blade is cylindric.
Blade can be flat board or curved slab.
Described signal generator is the magnetic signal generator, and described signal receiver is the magnet steel assembly, and described flow indicator is a character wheel counter.
One side of described cavity is equipped with cover plate, the inboard fixed diameter of the cover plate locating sleeve identical with cavity, the centre of locating sleeve and cover plate has the mounting hole of armature spindle, the outside of cover plate is useful on the screw thread that hollow nut is installed, described hollow nut is sealed cover plate outside rotor axle mounting hole, between described hollow nut and the cover plate sealing strip is arranged, there is the armature spindle trepanning on the top of described hollow nut; Be connected signal generator on the armature spindle and be contained in the inner chamber of hollow nut; The cover plate outside also has the counter installation sleeve, and the shell of counter is by being threaded on the installation sleeve.
In the transfusion section, the impulse force of import liquid stream is dug blade, is propped up by block to be radially, and this moment, leaf head and cavity inner wall were tangent, and blade drives rotor rotation.When blade rotation arrives liquid outlet, discharge liquid.When blade turned on the liquid outlet backhaul section, because hydraulic pressure descends, blade lodged, and has reduced advance resistance, and leaf head and cavity inner wall are tangent, prevent liquid reversed flow under inertia effect.
Advantage of the present invention is: blade opens, draws in the backhaul section in the transfusion section, can reduce the liquid resistance of blade effectively in the backhaul section, make the rotor rotation resistance little, walk about smoothness, sensitivity of complete machine improves, and for improving the precision that low discharge measures great benefiting arranged.
(4) description of drawings
Fig. 1 is that of the present invention cuing open attempted.
Fig. 2 is a side view of the present invention.
Fig. 3 is the front elevation of counter lid of the present invention.
Fig. 4 is that cuing open of counter lid of the present invention attempted.
Fig. 5 is the side view of rotor of the present invention.
Fig. 6 is a signal generator scheme of installation of the present invention.
Fig. 7 is the synoptic diagram of cover plate and locating sleeve.
Fig. 8 is the hollow nut synoptic diagram.
(5) embodiment
Embodiment one
With reference to accompanying drawing:
Turning plate type flowmeters of the present invention comprises housing 1, and signal receiver, flow indicator are housed on the housing 1.Described signal generator 15 is magnetic signal generators, and described signal receiver is a magnet steel assembly 2, and described flow indicator is a character wheel counter 3.Magnet steel assembly 2 is installed together with character wheel counter 3.
In the cylindrical cavity 4 of housing 1 rotor 5 is housed, have inlet 6 and liquid outlet 7 on the housing 1, inlet 6 and liquid outlet 7 are communicated with described cavity 4, inlet 6 and liquid outlet 7 are with respect to the center of circle arranged off-centre of rotor 5, signal generator 15 is housed on the rotor 5, described rotor 5 outer rims are hinged with blade 8, downbeam is that blade is dug direction, countercurrent direction is a blade lodging direction, described blade 8 is axial arranged along rotor, the length of blade 8 equals the height of described cylindrical cavity 4, and described rotor 5 outer rims also are provided with the block 9 of digging direction at blade, and the inwall of described cavity 4 has the shape tangent with the outer end of blade 8.
Blade 8 is radially when offseting with described block 9.The outer rim of blade 8 is cylindric.Blade 8 is dull and stereotyped.
One side of described cavity 4 is equipped with cover plate 9, the locating sleeve 10 that the inboard fixed diameters of cover plate 9 and cavity 4 are identical, the centre of locating sleeve 10 and cover plate 9 has the mounting hole 11 of armature spindle 20, the outside of cover plate 9 is useful on the screw thread 16 that hollow nut 14 is installed, described hollow nut 14 is sealed cover plate 9 outside rotor axle mounting holes 11, between described hollow nut 14 and the cover plate 9 sealing strip is arranged, there is armature spindle trepanning 21 on the top of described hollow nut 14; Be connected signal generator 15 on the armature spindle and be contained in the inner chamber of hollow nut 14; Cover plate 9 outsides also have counter installation sleeve 19, and the shell of counter 3 is connected on the installation sleeve 19 by screw thread 17.
Downbeam in the cavity 4 is transfusion sections 12 from inlet 6 to liquid outlet 7, and liquid outlet 7 is backhaul sections 13 to inlet 6.The inwall of the alleged cavity 4 of the present invention has the shape tangent with the outer end of blade 8, is meant in the curve and blade 8 outer ends of the inwall of transfusion section 12 and backhaul section 13 cavitys tangent.
In transfusion section 12, the impulse force of import liquid stream is dug blade 8, is propped up by block 9 to be radially, and this moment, blade 8 heads and cavity inner wall were tangent, and blade 8 drives rotor 5 and rotates.When blade 8 turns to liquid outlet 7, discharge liquid.When blade turned on the liquid outlet 7 backhaul section 13, because hydraulic pressure descends, blade 8 lodged, and has reduced advance resistance, and blade 8 heads and cavity 4 inwalls are tangent, prevent liquid reversed flow under inertia effect.
Embodiment two
Blade 8 is curved slabs in the present embodiment.Other are identical with embodiment one.
Blade 8 adopts curved slab, can make in the backhaul section
13Head is pressed close to the rotor outer rim more during the blade lodging, can reduce the gap of rotor outer rim to cavity inner wall like this, reduces the resistance area of blade, further reduces the liquid resistance of backhaul section blade.
Embodiment three
With reference to accompanying drawing: 1,2,3,5,6,7:
Compare with embodiment, the signal generator 15 of present embodiment, signal receiver, flow indicator adopt multi-form.
The signal generator 15 of present embodiment is the gear that is connected with armature spindle, and signal receiver is a gear set, and flow indicator adopts the character wheel counter that is connected with the aforesaid gears group.
The described content of this instructions embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (9)
1, turning plate type flowmeters, comprise housing, signal receiver is housed on the housing, flow indicator, in the cylindrical cavity of housing rotor is housed, have inlet and liquid outlet on the housing, inlet and liquid outlet are communicated with described cavity, inlet and liquid outlet are with respect to the center of circle arranged off-centre of rotor, signal generator is housed on the rotor, it is characterized in that described rotor outer rim is hinged with blade, downbeam is that blade is dug direction, countercurrent direction is a blade lodging direction, and described blade is axial arranged along rotor, and the length of blade equals the height of described cylindrical cavity, described rotor outer rim also is provided with the block of digging direction at blade, and the inwall of described cavity has the shape tangent with the outer end of blade.
2, turning plate type flowmeters as claimed in claim 1 is characterized in that: described blade and described block are radially when offseting.
3, turning plate type flowmeters as claimed in claim 1 is characterized in that: the outer rim of blade is cylindric.
4, turning plate type flowmeters as claimed in claim 2 is characterized in that: the outer rim of blade is cylindric.
5, as the described turning plate type flowmeters of one of claim 1-4, it is characterized in that: blade is dull and stereotyped.
6, as the described turning plate type flowmeters of one of claim 1-4, it is characterized in that: blade is a curved slab.
7, turning plate type flowmeters as claimed in claim 5 is characterized in that: described signal generator is the magnetic signal generator, and described signal receiver is the magnet steel assembly, and described flow indicator is a character wheel counter.
8, turning plate type flowmeters as claimed in claim 6 is characterized in that: described signal generator is the magnetic signal generator, and described signal receiver is the magnet steel assembly, and described flow indicator is a character wheel counter.
9, as claim 7 or 8 described turning plate type flowmeters, it is characterized in that: a side of described cavity is equipped with cover plate, the inboard fixed diameter of the cover plate locating sleeve identical with cavity, the centre of locating sleeve and cover plate has the mounting hole of armature spindle, the outside of cover plate is useful on the screw thread that hollow nut is installed, described hollow nut is sealed cover plate outside rotor axle mounting hole, between described hollow nut and the cover plate sealing strip is arranged, and there is the armature spindle trepanning on the top of described hollow nut; Be connected signal generator on the armature spindle and be contained in the inner chamber of hollow nut; The cover plate outside also has the counter installation sleeve, and the shell of counter is by being threaded on the installation sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100696910A CN101329189A (en) | 2007-06-22 | 2007-06-22 | Turning plate type flowmeters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100696910A CN101329189A (en) | 2007-06-22 | 2007-06-22 | Turning plate type flowmeters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101329189A true CN101329189A (en) | 2008-12-24 |
Family
ID=40205110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100696910A Pending CN101329189A (en) | 2007-06-22 | 2007-06-22 | Turning plate type flowmeters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101329189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387893A (en) * | 2015-12-11 | 2016-03-09 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flow meter and turbine flow meter |
-
2007
- 2007-06-22 CN CNA2007100696910A patent/CN101329189A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387893A (en) * | 2015-12-11 | 2016-03-09 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flow meter and turbine flow meter |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081224 |