CN202522270U - Turbine flow sensor - Google Patents
Turbine flow sensor Download PDFInfo
- Publication number
- CN202522270U CN202522270U CN2012201191996U CN201220119199U CN202522270U CN 202522270 U CN202522270 U CN 202522270U CN 2012201191996 U CN2012201191996 U CN 2012201191996U CN 201220119199 U CN201220119199 U CN 201220119199U CN 202522270 U CN202522270 U CN 202522270U
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- China
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- sensor
- pipeline
- impeller
- turbine flow
- housing
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- Expired - Fee Related
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Abstract
The utility model relates to a turbine flow sensor. A hard alloy shaft is transversely arranged at the center of a housing and provided with a hard alloy bearing; an impeller is vertically arranged on the hard alloy bearing; a front guide piece is arranged at the front part of the impeller; a rear guide piece is arranged at the rear part of the impeller; a preamplifier is arranged on the housing; and a pipeline at the front part of the sensor is provided with a filter. A pipeline between a liquid inlet and the filter is provided with a flow control valve, and a pipeline between the sensor and an outlet is provided with another flow control valve. The turbine flow sensor is provided with no movable member, is high in reliability and precision and long in life, and can accurately measure the instantaneous flow rate and accumulated flow rate of liquid in a wide flow range. The turbine flow sensor is not affected by the medium temperature, pressure, viscidity and components, cannot be blocked and stuck, is difficult in scaling, resists high temperature and high pressure, and is safe, explosion-proof and applicable to severe environments. The turbine flow sensor has good shock resistance by taking such actions as isolation, shielding and filtering.
Description
Technical field
The utility model relates to a kind of flow instrument, relates in particular to a kind of being applicable to and measures in the closed conduct turbine flow transducer that does not play corrosive attack with stainless steel and corundum wimet and do not have the liquid of impurity such as fiber, particle.
Background technology
At present, be used for the flow-meter of industries such as oil, chemical industry, metallurgy, water supply, food, pharmacy, papermaking, there are problems such as degree of accuracy is low, repdocutbility is poor, reaction is insensitive, anti-wear performance is low, complex structure, installation and maintenance use inconvenience in major part.Can in very wide flow range, accurately measure the instantaneous delivery and the integrated flow of fluid.And receive the influence of medium temperature, pressure, viscosity and composition easily, be not suitable for rugged surroundings.
The utility model content
In order to overcome the problems referred to above that the conventional flow quantity sensor exists, the utility model provides a kind of good reliability, precision height, long turbine flow transducer of life-span.
The utility model for realizing the technical scheme that above-mentioned purpose adopted is: the wimet axle is laterally installed in the center in the turbine flow transducer, housing, and the wimet bearing is installed on the wimet axle; Vertical mounted impeller on the wimet bearing; The impeller front portion is provided with the forward direction guiding element, and the impeller rear portion is provided with the back to guiding element, and prime amplifier is installed on the housing; Anterior preceding straight tube, the straight tube after the housing rear portion connects of connecting of housing.
Mounting filtering device on the anterior pipeline of sensor.
On the pipeline between fluid inlet and the filtrator flow control valve is installed, on the pipeline between sensor and the outlet flow control valve is installed.
Be provided with bypass line between said import and the outlet, bypass line is provided with by-pass valve.
The turbine flow transducer of the utility model, no movable member, good reliability, precision are high, the life-span is long, can in very wide flow range, accurately measure the instantaneous delivery and the integrated flow of fluid.It does not receive the influence of medium temperature, pressure, viscosity and composition, does not block up simultaneously, does not block, less scaling, high temperature resistant, high pressure, and safety anti-explosive is applicable to rugged surroundings.Cooperate measures such as isolation, shielding, filtering, have good shock resistance.
Description of drawings
Fig. 1 is the utility model turbine flow transducer schematic diagram.
Fig. 2 is the utility model turbine flow transducer sectional structure chart.
Fig. 3 is the utility model turbine flow transducer and filtrator one-piece construction figure.
Fig. 4 is filtration device structure figure.
Embodiment
The principle of the utility model turbine flow transducer is as shown in Figure 1; Mounting filtering device 2 on the sensor 4 anterior pipelines; Flow control valve 1 is installed on the pipeline between fluid inlet and the filtrator 2; On the pipeline between sensor 4 and the outlet flow control valve 1 is installed, is provided with bypass line 7 between import and the outlet, bypass line 7 is provided with by-pass valve 8.
The turbine flow transducer structure is as shown in Figure 2, and wimet axle 14 is laterally installed in the center in the housing 11, and wimet bearing 13 is installed on the wimet axle 14; Vertical mounted impeller 15 on the wimet bearing 13; Impeller 15 front portions are provided with forward direction guiding element 12, and impeller 15 rear portions are provided with the back to guiding element 16, and prime amplifier 15 is installed on the housing 11; Housing straight tube 3 before 11 anterior connections, housing 11 rear portions connect back straight tube 5.
The principle of work of this turbine flow transducer is following: the fluid sensor housing 11 of flowing through, because the blade of impeller 15 has certain angle with flowing to, the impulse force of fluid makes blade have rotating torque; Blade rotation after overcome friction square and the fluid resistance, stabilization of speed after equalising torque, under certain conditions; Rotating speed is directly proportional with flow velocity, because blade has magnetic conductivity, it is in the signal detector magnetic field of (being made up of permanent-magnet steel and coil); The blade cuts magnetic line of force of rotation is periodically changing the magnetic flux of coil, thereby is making the coil two ends induce electric impulse signal; This signal is through the amplification shaping of amplifier; Be formed with the continuous rectangular wave pulse of certain amplitude, but teletransmission demonstrates the instantaneous delivery or the total amount of fluid to Displaying Meter.In measurement range, the pulse duration frequency signal of sensor output is directly proportional with the volumetric flow rate of fluid, and this ratio is instrument coefficient and representes with K:
In the formula: the f-pulsed frequency, Q-volumetric flow rate (m3/h or L/h), the k value is established in the supporting Displaying Meter, just can demonstrate instantaneous delivery and accumulation total amount.
The mounting means of sensor connects with screw thread, flange according to the specification different mining, and sensor should be installed in and change and avoid pipe vibration or pipeline that the place of stress influence is arranged easily.Consider the protection of pair amplifier, should avoid making it to receive strong heat radiation and radioactive influence as far as possible.Simultaneously, of the influence of extraneous strong-electromagnetic field must be avoided, as can not avoid the time, should on the amplifier of sensor, add radome, otherwise electromagnetic interference (EMI) the operate as normal of Displaying Meter will be had a strong impact on magnetic test coil.Fluid flow direction should be consistent with the direction of arrow that indication on the sensor outer housing flows to when sensor was installed.Fluid should be full of pipeline, and bubble must not be arranged.Sensor upstream extremity straight length >=10DN, downstream end straight length >=5DN, DN are internal diameter of the pipeline.The unlikely normal conveying that influences fluid in order to overhaul should be installed by-pass line in the installation place of sensor.In order to remove the impurity in the fluid, guarantee the operate as normal of sensor, improve the life-span of sensor, should load onto the order number on the pipeline before sensor and be the filtrator of 3 ~ 9 orders/centimetres 2.The order number that caliber is big generally speaking is rare, and the order number that caliber is little is close.Can select the order number of screen pack according to actual operating position for use.(surpass the flow range upper limit) through the flow of sensor when excessive, bearing will for this reason, estimate that the flow control valve regulated fluid flow of pipe downstream capable of using arranged under the situation of overflow because of the too high enhance faster wear of rotating speed.Because the gas in the pipeline brings very mistake can for the measurement of sensor, should be specifically noted that when therefore installing and the situation that is mixed with gas in the fluid to be measured especially to the measurement of light weight fluid medium air trap must be housed.During sensor installation, impurity gets into sensor in the pipeline in order to avoid on new pipeline, should replace sensor etc. after operation a period of time earlier with a blank pipe, and affirmation impurity has been got rid of and changed sensor again.Sensor is a precision optical machinery class instrument, and the impeller rotational speed is very high during owing to work, the fragile impeller of unexpected variation of flow velocity; So when bringing into use at every turn, should be earlier slowly open valve 1 make and be full of fluid in the sensor slowly, slowly opening outlet valve then; Receive the impact of high-velocity fluid when forbidding sensor to be in no fluid state; Otherwise sensor will be damaged, and must guard against violent pass valve, be strictly on guard against that water hammer takes place.
This sensor is a push-type wimet bearing; Degree of accuracy is high; Repdocutbility is good, be quick on the draw, anti-wear performance is high; Having characteristics such as installation and maintenance simple in structure are easy to use, be widely used in industries such as oil, chemical industry, metallurgy, water supply, food, pharmacy, papermaking, is the desirable instrument of flow metering.Sensor is supporting with the Displaying Meter with difference in functionality, can carry out the demonstration of instantaneous delivery, integrated flux, quantitatively control, and excess is reported to the police, functions such as outputting standard current signal.Sensor is applicable to that viscosity, carried out real liquid to sensor and demarcate the back use for the liquid of viscosity greater than 5 * 10-6m2/s less than the medium of 5 * 10-6m2/s under working temperature.Be applicable to measure in the closed conduct and do not play corrosive attack, and do not have the liquid of impurity such as fiber, particle with stainless steel 1Cr18Ni9Ti, 2Cr13 and corundum Al2O3, wimet.
Claims (4)
1. turbine flow transducer; It is characterized in that: wimet axle (14) is laterally installed in the interior center of housing (11); Wimet axle (14) is gone up wimet bearing (13) is installed, and wimet bearing (13) is gone up vertical mounted impeller (15), and impeller (15) front portion is provided with forward direction guiding element (12); Impeller (15) rear portion is provided with the back to guiding element (16); Housing (11) is gone up prime amplifier (15) is installed, straight tube (3) before the anterior connection of housing (11), and housing (11) rear portion connects back straight tube (5).
2. turbine flow transducer according to claim 1 is characterized in that: mounting filtering device (2) on the anterior pipeline of sensor (4).
3. turbine flow transducer according to claim 2 is characterized in that: flow control valve (1) is installed on the pipeline between fluid inlet and the filtrator (2), on the pipeline between sensor (4) and the outlet flow control valve (1) is installed.
4. turbine flow transducer according to claim 2 is characterized in that: be provided with bypass line (7) between said import and the outlet, bypass line (7) is provided with by-pass valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201191996U CN202522270U (en) | 2012-03-27 | 2012-03-27 | Turbine flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201191996U CN202522270U (en) | 2012-03-27 | 2012-03-27 | Turbine flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202522270U true CN202522270U (en) | 2012-11-07 |
Family
ID=47105214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201191996U Expired - Fee Related CN202522270U (en) | 2012-03-27 | 2012-03-27 | Turbine flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202522270U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604471A (en) * | 2013-11-18 | 2014-02-26 | 山东大明胜开实业有限公司 | Impeller-type flowmeter flow high-speed sampling sensor |
| CN107884537A (en) * | 2017-12-12 | 2018-04-06 | 南京华脉医疗器械股份有限公司 | A kind of water purification combined test stand |
| CN113155206A (en) * | 2021-04-28 | 2021-07-23 | 陈满堂 | Double-turbine rotor flow meter resisting vibration and impact |
-
2012
- 2012-03-27 CN CN2012201191996U patent/CN202522270U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604471A (en) * | 2013-11-18 | 2014-02-26 | 山东大明胜开实业有限公司 | Impeller-type flowmeter flow high-speed sampling sensor |
| CN107884537A (en) * | 2017-12-12 | 2018-04-06 | 南京华脉医疗器械股份有限公司 | A kind of water purification combined test stand |
| CN113155206A (en) * | 2021-04-28 | 2021-07-23 | 陈满堂 | Double-turbine rotor flow meter resisting vibration and impact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20140327 |