CN205785352U - A kind of turbine flow transducer of wide range ratio - Google Patents
A kind of turbine flow transducer of wide range ratio Download PDFInfo
- Publication number
- CN205785352U CN205785352U CN201620581935.8U CN201620581935U CN205785352U CN 205785352 U CN205785352 U CN 205785352U CN 201620581935 U CN201620581935 U CN 201620581935U CN 205785352 U CN205785352 U CN 205785352U
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- air deflector
- range ratio
- wide range
- flow transducer
- impeller
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Abstract
The utility model discloses the turbine flow transducer of a kind of wide range ratio, including housing, air deflector, signal detector and impeller, impeller is provided with blade, blade number is more than or equal to 6；Compared with prior art, the turbine flow transducer of the wide range ratio that this utility model provides is the range ratio being added sensor by the method increasing blade, has measurement precisely, is quick on the draw, it is simple to installs the feature of operation.
Description
Technical field
This utility model relates to sensor field, is specifically related to the turbine flow transducer of a kind of wide range ratio.
Background technology
Existing turbine flow transducer is a kind of delicate flow measuring instruments, supporting with corresponding flow totalizer meter can
For measuring flow and the total amount of liquid.It is widely used in the metering in field, the control systems such as oil, chemical industry, metallurgy, scientific research.Join
The turbine flow transducer having sanitary fitting can apply to pharmaceutical industry.Fluid flows through sensor housing, due to impeller
Blade with flow to have certain angle, the impulse force of fluid makes blade have rotating torque, overcome moment of friction and fluid resistance it
Rear blade rotates, and stabilization of speed after equalising torque, under certain conditions, rotating speed is directly proportional to flow velocity, owing to blade is led
Magnetic, it is in the magnetic field of signal detector (being made up of permanent-magnet steel and coil), the blade cuts magnetic line of force of rotation, the cycle
Property the magnetic flux changing coil so that coil two ends induce electric impulse signal, through signal amplifier device amplify
After shaping, shown by display.On market, existing small-caliber flow meter impeller is usually 4, and range ratio scope is usually
1:10, but this range ratio scope can not meet the demand of numerous clients.On this basis, this utility model is by right
The improvement of effusion meter impeller increases its range ratio scope, to solve to measure in prior art the problem that range ratio is low.
Utility model content
For solving the problems referred to above, the utility model proposes the turbine flow transducer of a kind of wide range ratio, increase blade
Number, thus improve range ratio and measure scope.The scheme that this utility model solves above-mentioned technical problem is as follows:
The utility model discloses the turbine flow transducer of a kind of wide range ratio, including housing, air deflector, signal detection
Device and impeller, impeller is provided with blade；Wherein, in order to reach to increase the purpose of sensor measurement range ratio, the number of blade
Being designed as no less than 6, number of blade increase can improve the reading accuracy of instrument；The sensitivity of impeller can improve, thus
When medium low discharge flows out, impeller also can operate flexibly, spread out of accurate signal, and such as, 6 impellers can make its range ratio increase to
1:15,8 impeller can make its range ratio increase to 1:20.
Further, in order to increase the fluid moment of torsion to impeller, blade design is spiral vane, and spiral vane is uniform
It is distributed on the outer wall of impeller and is divided into by the outer wall of impeller the fluid passage that size is identical, also do not result in fluid pair simultaneously
The problem of impeller unbalance stress.
Further, circulating for the ease of fluid, air deflector is divided into front air deflector and rear air deflector, and forward and backward air deflector divides
It is not positioned at the two ends of described housing, is attached by axostylus axostyle between described forward and backward air deflector, axostylus axostyle is further fixed on locating core
Set, wheel rotation is set in locating core and puts, and so when fluid flows, impeller is rotated around axostylus axostyle；Shell
The inside of body has cavity, and air deflector is separately positioned on the two ends of housing hollow, facilitates flowing to and exporting of fluid.
Further, in order to make Stability Analysis of Structures, the top that forward and backward air deflector is relative is designed with axle sleeve, the two of axostylus axostyle
End is separately fixed in two axle sleeves, the axis of location core retainer plate and the dead in line of described housing.
Further, in order to enable forward and backward air deflector to be fixed in cavity, and there is not position with the flowing of fluid
Moving, this utility model is provided with jump ring in the end of forward and backward air deflector, is fixed in the cavity of enclosure interior by jump ring.
Further, in order to exported by the carrying out of signal stabilization, signal detector is fixed on the outer wall of housing, logical
Cross the rotation of impeller to change the size of magnetic flux, thus magnetoelectricity signal is detected.
The number being designed with increasing blade of the present utility model, therefore the moment of friction between blade and detected fluid increases
Add, also increase the rotary inertia of impeller simultaneously；Number of blade increase can improve the reading accuracy of instrument；The sensitivity rotated
Can improve, thus when medium low discharge flows out, impeller also can operate flexibly, spread out of accurate signal.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is the structural representation of 6 impellers；
Fig. 3 is the structural representation of 8 impellers.
Detailed description of the invention
Elaborating embodiment of the present utility model below, the present embodiment is being front with technical solutions of the utility model
Put and implement, give detailed embodiment and concrete operating process, but protection domain of the present utility model does not limits
In following embodiment.
Embodiment 1
As shown in Figure 1-2, the turbine flow transducer of the wide range ratio in embodiment, including housing 9, signal detector
10, front air deflector 2, rear air deflector 8, location core retainer plate 6, housing 9 is hollow cylinder, and signal detector 10 is fixed on housing 9
Outside, front air deflector 2, rear air deflector 8 and location core retainer plate 6 be positioned at the cavity of housing 9, and front air deflector 2, rear air deflector 8 are with fixed
Position core retainer plate 6 connects by axostylus axostyle 5 is fixing, and the axis of location core retainer plate 6 and the axis of housing 9 are on same straight line.
The two ends of housing 9 are provided with the dead in line of jump ring 1, the axis of jump ring 1 and housing 9, the bottom of forward and backward air deflector
2.1 and 8.1 fixing with jump ring 1 are respectively connected, and the top 2.2 and 8.2 of forward and backward air deflector and location core retainer plate 6 are fixing by axostylus axostyle 5
Connect.
During fluid flowing, air deflector 2 enters housing 9 internal cavities in the past, flows out from rear air deflector 8, and location core retainer plate 6 is positioned at
Between front air deflector 2 and rear air deflector 8, the top of forward and backward air deflector 2 and 8 is respectively equipped with axle sleeve 4.1 and 4.2, and axostylus axostyle 5 is fixed
In two axle sleeves, the axis of location core retainer plate 6 respectively with the dead in line of described forward and backward air deflector 2 and 8, outside the core retainer plate 6 of location
Wall is provided with impeller 7, and impeller 7 is provided with spiral vane, and the outer wall of impeller 7 is divided into the stream that size is identical by spiral vane
Body passage, the number of spiral vane is 6.
Thrust plate 3, axostylus axostyle 5 is further respectively had in front air deflector axle sleeve 4.1 in embodiment 1 and rear air deflector axle sleeve 4.2
Two ends be connected with thrust plate 3 respectively.
Embodiment 2
As it is shown on figure 3, compared with Example 1, each parts and connected mode in embodiment 2 are constant, unique change,
The spiral vane number arranged on impeller in the present embodiment is 8.
Claims (5)
1. a turbine flow transducer for wide range ratio, including housing, air deflector, signal detector and impeller, its feature exists
In, described impeller is provided with blade, described blade number is more than or equal to 6.
The turbine flow transducer of a kind of wide range ratio the most as claimed in claim 1, it is characterised in that described blade is spiral
Shape blade, described spiral vane is evenly distributed on the outer wall of described impeller and the outer wall of described impeller is divided into size phase
Same fluid passage.
The turbine flow transducer of a kind of wide range ratio the most as claimed in claim 1, it is characterised in that described air deflector is divided into
Front air deflector and rear air deflector, described forward and backward air deflector lays respectively at the two ends of described housing, between described forward and backward air deflector
Being attached by axostylus axostyle, described axostylus axostyle is also fixed sheathed certain position core retainer plate, described wheel rotation is set in described locating core
Put, and with described axostylus axostyle as axis rotation.
The turbine flow transducer of a kind of wide range ratio the most as claimed in claim 3, it is characterised in that described forward and backward water conservancy diversion
Being designed with axle sleeve on the top that device is relative, the two ends of described axostylus axostyle are separately fixed in two described axle sleeves, described location core retainer plate
The dead in line of axis and described housing.
The turbine flow transducer of a kind of wide range ratio the most as claimed in claim 3, it is characterised in that described forward and backward water conservancy diversion
Device is fixed in the cavity of described enclosure interior by jump ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620581935.8U CN205785352U (en) | 2016-06-13 | 2016-06-13 | A kind of turbine flow transducer of wide range ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620581935.8U CN205785352U (en) | 2016-06-13 | 2016-06-13 | A kind of turbine flow transducer of wide range ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205785352U true CN205785352U (en) | 2016-12-07 |
Family
ID=58131429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620581935.8U Active CN205785352U (en) | 2016-06-13 | 2016-06-13 | A kind of turbine flow transducer of wide range ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205785352U (en) |
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2016
- 2016-06-13 CN CN201620581935.8U patent/CN205785352U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |