CN206876228U - Liquid turbine flowmeter with ceramic spacer - Google Patents
Liquid turbine flowmeter with ceramic spacer Download PDFInfo
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- CN206876228U CN206876228U CN201720606929.8U CN201720606929U CN206876228U CN 206876228 U CN206876228 U CN 206876228U CN 201720606929 U CN201720606929 U CN 201720606929U CN 206876228 U CN206876228 U CN 206876228U
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- turbine
- flowmeter
- spacer
- ceramic spacer
- liquid
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Abstract
The utility model provides a kind of liquid turbine flowmeter of band ceramics spacer, including built-in turbo- flowmeter shell, pulse transducer is installed on flowmeter shell, ceramic spacer is cased with outside described turbine, ceramic spacer makes turbine isolate with flowmeter shell, and pulse transducer detection part is stretched into flowmeter shell and contacted with ceramic spacer.The utility model accuracy of detection is high, and cost is low, can be applied to the occasion of strong corrosive media.
Description
Technical field
Liquid metering device field is the utility model is related to, specifically a kind of liquid turbine flowmeter of band ceramics spacer.
Background technology
In the flow-meter of liquid medium, liquid turbine flowmeter is more commonly used measuring instrument, have into
The features such as this is low, precision is high.
Currently used liquid turbine flowmeter, its structure as shown in figure 1, flowmeter shell by austenite stainless steel
Into being isolated between turbine and pulse transducer by one layer of very thin stainless steel.Due to be detected across stainless steel, pulse passes
Sensor needs to use magnetoelectric sensor or Hall sensor, while turbine needs to be made up of ferromagnetic stainless steel material.Its
Shortcoming is：
A. turbine is because ferromagnetic stainless steel material will be used（Such as ferritic stainless steel, martensitic stain less steel or two-phase
Stainless steel）It is made, it is impossible to using austenitic stainless steel（Nonferromagnetic）It is made, so the corrosion resistance of material pays no attention to phase, flow
Meter may not apply to the occasion of strong corrosive media；
B. the detection part of magnetoelectric sensor or Hall sensor all has certain magnetic field, and turbine can be produced only
Use is transferred to, influences the accuracy of detection of turbine flowmeter.
C. magnetoelectric sensor or Hall sensor cost are high.
Utility model content
The utility model is in order to solve problem of the prior art, there is provided a kind of liquid turbine flow of band ceramics spacer
Meter, accuracy of detection is high, and cost is low, can be applied to the occasion of strong corrosive media.
The utility model includes built-in turbo- flowmeter shell, is provided with pulse transducer on flowmeter shell, institute
Ceramic spacer is cased with outside the turbine stated, ceramic spacer makes turbine isolate with flowmeter shell, and pulse transducer detection part stretches into
Close to ceramic spacer in flowmeter shell.
Sealed between described ceramic spacer both ends and flowmeter shell by O-ring seals.
The both ends of described ceramic spacer are fixed with stator by nut respectively, and the center of stator is provided with sliding bearing,
The both ends shaft support of turbine enables turbine freedom and flexibility to rotate on sliding bearing.
Described pulse transducer is inductance approach switch.
Described turbine is austenitic stainless steel material.
The utility model beneficial effect is：
1st, turbine can be made of austenitic stainless steel, and flowmeter can be applied to the occasion of strong corrosive media.
2nd, the thermal coefficient of expansion of ceramic spacer is much smaller than stainless steel, so when medium temperature changes, flowmeter internal orifice dimension
Vary less, help to connect the accuracy of detection of high-flow meter.
3rd, inductance approach switch detection part will not produce rotation stop phenomenon, turbine rotation is more without magnetic field to turbine
Flexibly, flow measurement accuracy of measurement is higher.
4th, inductance approach switch cost is far below magnetoelectric sensor or Hall sensor.
Brief description of the drawings
Fig. 1 is existing liquid turbine flowmeter structural representation.
Fig. 2 is the utility model structure diagram.
Fig. 3 is A-A profiles in Fig. 2.
Embodiment
The utility model structure is as shown in Fig. 2 ceramic spacer 8 is placed in flowmeter shell 2（As shown in Figure 3）, it two
End is sealed by 2 O-ring seals 7 with flowmeter shell 2；2 stators 5 are arranged on the both ends of ceramic spacer 8, and by 2 nuts 3
It is fixed；The center of 2 stators 5 is provided with sliding bearing 4, and the both ends shaft support of turbine 6 enables turbine 6 on sliding bearing 4
Freedom and flexibility rotate.Pulse transducer inductance approach switch 1 is arranged on flowmeter shell 2, its detection part and turbine 6 it
Between isolated by ceramic spacer 8.
When the liquid medium for needing detection flows flows through turbine flow timing from left to right, fluid driven turbine 6 rotates, liquid
The flow velocity of medium is proportional to the rotating speed of turbine 6.When the detection part of the inswept pulse transducer 1 of a blade of turbine 6, arteries and veins
Rush sensor 1 and just export an electric impulse signal.Like this, the uninterrupted of liquid medium is transformed into phase by liquid turbine flow
The electric impulse signal of frequency is answered, measurement and control for flow.
The utility model concrete application approach is a lot, and described above is only preferred embodiment of the present utility model, should
Point out, for those skilled in the art, on the premise of the utility model principle is not departed from, can also make
Go out some improvement, these improvement also should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of liquid turbine flowmeter of band ceramics spacer, including it is built-in with turbine（6）Flowmeter shell（2）, flowmeter
Housing（2）On pulse transducer is installed, it is characterised in that：Described turbine（6）Ceramic spacer is cased with outside（8）, ceramic spacer
（8）Make turbine（6）With flowmeter shell（2）Isolation, pulse transducer detection part stretch into flowmeter shell（2）Interior close ceramics
Spacer（8）.
2. the liquid turbine flowmeter of band ceramics spacer according to claim 1, it is characterised in that：Described ceramic spacer
（8）Both ends and flowmeter shell（2）Between pass through O-ring seals（7）Sealing.
3. the liquid turbine flowmeter of band ceramics spacer according to claim 1, it is characterised in that：Described ceramic spacer
（8）Both ends pass through nut respectively（3）It is fixed with stator（5）, stator（5）Center sliding bearing is installed（4）, turbine（6）
Both ends shaft support in sliding bearing（4）On, make turbine（6）Can freedom and flexibility rotation.
4. the liquid turbine flowmeter of band ceramics spacer according to claim 1, it is characterised in that：Described pulse sensing
Device is inductance approach switch.
5. the liquid turbine flowmeter of band ceramics spacer according to claim 1, it is characterised in that：Described turbine（6）
For austenitic stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720606929.8U CN206876228U (en) | 2017-05-27 | 2017-05-27 | Liquid turbine flowmeter with ceramic spacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720606929.8U CN206876228U (en) | 2017-05-27 | 2017-05-27 | Liquid turbine flowmeter with ceramic spacer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206876228U true CN206876228U (en) | 2018-01-12 |
Family
ID=61337629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720606929.8U Active CN206876228U (en) | 2017-05-27 | 2017-05-27 | Liquid turbine flowmeter with ceramic spacer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206876228U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024248A (en) * | 2017-05-27 | 2017-08-08 | 南京保立隆包装机械有限公司 | Liquid turbine flowmeter with ceramic spacer |
-
2017
- 2017-05-27 CN CN201720606929.8U patent/CN206876228U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024248A (en) * | 2017-05-27 | 2017-08-08 | 南京保立隆包装机械有限公司 | Liquid turbine flowmeter with ceramic spacer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |