CN210922719U - Turbine flow sensor and flowmeter - Google Patents

Turbine flow sensor and flowmeter Download PDF

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Publication number
CN210922719U
CN210922719U CN201922119918.9U CN201922119918U CN210922719U CN 210922719 U CN210922719 U CN 210922719U CN 201922119918 U CN201922119918 U CN 201922119918U CN 210922719 U CN210922719 U CN 210922719U
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infrared
flow
receiving tube
flow guide
tube
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CN201922119918.9U
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王锦鸿
许翔
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Guangzhou Ruipu Medical Technology Co ltd
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Guangzhou Ruipu Medical Technology Co ltd
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Abstract

The utility model provides a turbine flow sensor, which comprises a sensor main body, wherein the sensor main body is provided with a fluid channel and a flow guide device; a rotatable blade and an infrared detection module for detecting the rotation angle and the rotation direction of the rotatable blade are arranged in the fluid channel, and the flow guide device comprises a front flow guide part and a rear flow guide part; the front guide piece is positioned in the fluid passage on one side of the rotatable blade, and the rear guide piece is positioned in the fluid passage on the other side of the rotatable blade. The embodiment of the utility model provides a turbine flow sensor can avoid rotating vane to receive the interference of peripheral magnetic field through institutional advancement, improves flow detection's accuracy and reliability. The utility model also provides a flowmeter.

Description

Turbine flow sensor and flowmeter
Technical Field
The utility model belongs to the technical field of the technique of observing and controling and specifically relates to a turbine flow sensor and flowmeter are related to.
Background
The turbine flow sensor is a precise flow measuring instrument, and can be matched with a corresponding flow integrating instrument to measure the flow and the total amount of liquid. The device is widely applied to metering and control systems in the fields of petroleum, chemical engineering, metallurgy, scientific research and the like.
In the prior art, a turbine flow sensor mainly adopts a magnetic rotating blade to realize fluid speed measurement, fluid flowing through the turbine flow sensor impacts the magnetic rotating blade to cause the blade to rotate and cut a magnetic field, and a peripheral coil of the sensor detects change and performs amplification and shaping treatment, so that fluid flow can be obtained through calculation. However, the existing turbine flow sensor is easy to cause metering error and even failure due to the fact that the magnetic rotating blades are easily interfered by peripheral magnetic fields.
SUMMERY OF THE UTILITY MODEL
The utility model provides a turbine flow sensor, flowmeter and flow measurement method to solve current turbine flow sensor and adopt magnetism rotating vane to receive the technical problem of interference easily, the utility model discloses a structural improvement can avoid rotating vane to receive the interference of peripheral magnetic field, in order to do benefit to accuracy and the reliability that improves flow measurement.
In order to solve the technical problem, an embodiment of the present invention provides a turbine flow sensor, including a sensor main body, where the sensor main body is provided with a fluid channel and a flow guide device;
a rotatable blade and an infrared detection module for detecting the rotation angle and the rotation direction of the rotatable blade are arranged in the fluid channel, and the flow guide device comprises a front flow guide part and a rear flow guide part;
the front guide piece is positioned in the fluid passage on one side of the rotatable blade, and the rear guide piece is positioned in the fluid passage on the other side of the rotatable blade.
As a preferred scheme, a plurality of first flow deflectors are arranged in the front flow guide part, and a flow guide channel formed by the first flow deflectors in the front flow guide part is communicated with an opening at one end of the fluid channel and the fluid channel where the rotatable blade is located;
and a plurality of second flow deflectors are arranged in the rear flow guide part, and a flow guide channel formed by the second flow deflectors in the rear flow guide part is communicated with an opening at the other end of the fluid channel and the fluid channel where the rotatable blade is positioned.
Preferably, a plurality of the first guide vanes are parallel to each other, a plurality of the second guide vanes are parallel to each other, and one of the first guide vanes and one of the second guide vanes are parallel to each other or on the same straight line.
Preferably, the first guide vanes are obliquely arranged in the front guide part, and the second guide vanes are obliquely arranged in the rear guide part.
Preferably, the rotatable blades comprise a rotating shaft and at least two pieces of reflective blades which are arranged on the rotating shaft and can reflect infrared rays;
the infrared detection module comprises an infrared transmitting tube, a first infrared receiving tube and a second infrared receiving tube, and infrared rays emitted by the infrared transmitting tube are transmitted to the first infrared receiving tube or the second infrared receiving tube through the reflective blades.
Preferably, the light emitting end of the infrared emission tube and the receiving end of the first infrared receiving tube form an angle of 90 degrees with respect to the center of the rotatable blade;
the light emitting end of the infrared emission tube and the receiving end of the second infrared receiving tube form an angle of 135 degrees with respect to the center of the rotatable blade, and the first infrared receiving tube is positioned between the second infrared receiving tube and the infrared emission tube.
It should be understood that the angles of the infrared transmitting tube and the first infrared receiving tube and the second infrared receiving tube are set to 90 ° and 135 ° respectively, which is only one of the many possible embodiments of the present invention, and the present invention is not limited to 90 ° and 135 °, and can be adjusted to other angle relationships according to practical applications.
Preferably, the sensor body further comprises a housing, the fluid channel being disposed within the housing.
Preferably, the cross-section of the fluid channel is circular.
Preferably, the infrared transmitting tube, the first infrared receiving tube, the second infrared receiving tube, and the rotating shaft are located on the same plane.
An embodiment of the utility model provides a flowmeter is still provided, including power, signal processor and as above-mentioned turbine flow sensor, the power respectively with signal processor infrared detection module electricity is connected, signal processor's data end with infrared detection module's signal output part is connected.
To sum up, the embodiment of the utility model provides a turbine flow sensor and flowmeter, its arbitrary embodiment has following beneficial effect:
the turbine flow sensor comprises a sensor main body, wherein the sensor main body is provided with a fluid channel and a flow guide device; a rotatable blade and an infrared detection module for detecting the rotation angle and the rotation direction of the rotatable blade are arranged in the fluid channel, and the flow guide device comprises a front flow guide part and a rear flow guide part; the front guide piece is positioned in the fluid passage on one side of the rotatable blade, and the rear guide piece is positioned in the fluid passage on the other side of the rotatable blade. Through carrying out configuration improvement to turbine flow sensor, use infrared detection module to replace current magnetic field detection mode, avoided turbine flow sensor from the root to receive peripheral magnetic field interference to be favorable to improving flow detection's accuracy and reliability. The flow guide pieces are arranged in the front and back directions of the fluid channel, so that when the turbine flow sensor is applied to flow detection, flow can enter from the front end or the back end of the fluid channel and cause the rotatable blades to rotate, the infrared detection module can acquire signals, and the flow signal acquisition function is realized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a longitudinal sectional view of a turbine flow sensor in an embodiment of the invention;
fig. 2 is a cross-sectional view of a turbine flow sensor in an embodiment of the invention;
FIG. 3 illustrates fluid entering the fluid passageway from the front baffle;
FIG. 4 illustrates fluid entering the fluid passageway from the rear baffle;
fig. 5 is a diagram of detection signals when the blades of the flow meter of the embodiment of the present invention are rotating in the forward direction;
fig. 6 is a diagram of detection signals when the blades of the flow meter of the embodiment of the present invention rotate in the reverse direction;
fig. 7 is a schematic diagram of a flow meter in an embodiment of the invention;
wherein the reference numbers in the drawings of the specification are as follows:
1. a second infrared receiving tube; 2. a first infrared receiving tube; 3. an infrared emission tube; 4. a rotatable blade; 5. a housing; 6. a rear flow guide member; 7. a front flow guide member.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a turbine flow sensor, including a sensor body having a fluid passage and a flow guide device;
the fluid channel is internally provided with a rotatable blade 4 and an infrared detection module for detecting the rotation angle and the rotation direction of the rotatable blade 4, and the flow guide device comprises a front flow guide part 7 and a rear flow guide part 6;
the front guide member 7 is located in the fluid passage of one side of the rotatable blade 4, and the rear guide member 6 is located in the fluid passage of the other side of the rotatable blade 4.
In the embodiment, the turbine flow sensor is structurally improved, the infrared detection module is used for replacing the existing magnetic field detection mode, and the turbine flow sensor is fundamentally prevented from being interfered by a peripheral magnetic field, so that the accuracy and the reliability of flow detection are improved. Flow guide pieces are arranged in the front and back directions of the fluid channel, so that when the turbine flow sensor is applied to flow detection, flow can enter from the front end or the back end of the fluid channel and cause the rotatable blades 4 to rotate, the infrared detection module can acquire signals, and the flow signal acquisition function is realized.
It should be noted that the infrared detection module is configured to generate directional infrared light and receive infrared external light reflected by the rotatable blade 4, and convert the received infrared light into an electrical signal and transmit the electrical signal to the signal processor, so that the signal processor amplifies, shapes, and performs operation on the electrical signal converted from the infrared light, and outputs the fluid flow.
Referring to fig. 1, in order to make the fluid uniformly enter the fluid channel to cause the rotation of the rotatable blade 4, a plurality of first guide vanes are arranged in the front guide member 7, and a guide channel formed by the first guide vanes in the front guide member 7 communicates with an opening at one end of the fluid channel and the fluid channel where the rotatable blade 4 is located; a plurality of second flow deflectors are arranged in the rear flow guide part 6, and a flow guide channel formed by the second flow deflectors in the rear flow guide part 6 is communicated with an opening at the other end of the fluid channel and the fluid channel where the rotatable blade 4 is located. Preferably, in the front baffle 7, the linear distance between two adjacent first baffles is equal, and likewise, the linear distance between two adjacent second baffles is equal.
Preferably, the first guide vanes are obliquely arranged in the front guide member 7, the second guide vanes are obliquely arranged in the rear guide member 6, the first guide vanes are connecting plates with a certain inclination angle in the front guide member 7, and the second guide vanes are connecting plates with a certain inclination angle in the rear guide member 6. The first guide vanes are parallel to each other, the second guide vanes are parallel to each other, one of the first guide vanes is parallel to one of the second guide vanes or is on the same straight line, and the first guide vanes correspond to the second guide vanes at 180 degrees.
When the fluid enters from the front flow guide part 7, the front flow guide part 7 has a certain inclination angle, so that the fluid can deflect under the action of the front flow guide part 7 and simultaneously push the rotatable blades 4, and the rotatable blades 4 are rotated in a forward direction (the direction is designated as a forward direction) (as shown by an arrow in fig. 3, the direction is a fluid flow direction);
when the fluid enters from the rear guide member 6, the fluid generates a deflection direction opposite to the deflection direction generated by the front guide member 7 under the action of the rear guide member 6 because the rear guide member 6 corresponds to the front guide member 7 at an angle of 180 °, and simultaneously pushes the rotatable blades 4 to generate a reverse rotation of the rotatable blades 4 (as shown by an arrow in fig. 4, the fluid flow direction is shown).
Referring to fig. 1 and 2, in one embodiment of the present invention, the rotatable blade 4 includes a rotating shaft and at least two reflective blades mounted on the rotating shaft and capable of reflecting infrared light;
the infrared detection module comprises an infrared transmitting tube 3, a first infrared receiving tube 2 and a second infrared receiving tube 1, and infrared rays emitted by the infrared transmitting tube 3 are transmitted to the first infrared receiving tube 2 or the second infrared receiving tube 1 through the reflective blades.
Preferably, the light emitting end of the infrared emission tube 3 and the receiving end of the first infrared receiving tube 2 form an angle of 90 ° with respect to the center of the rotatable blade 4;
the light emitting end of the infrared emission tube 3 and the receiving end of the second infrared receiving tube 1 form an angle of 135 degrees with respect to the center of the rotatable blade 4, and the first infrared receiving tube 2 is positioned between the second infrared receiving tube 1 and the infrared emission tube 3.
In this embodiment, but a infrared transmitting tube 3, first infrared receiving tube 2 and second infrared receiving tube 1 are installed to rotatable blade 4's rotatory tangent plane, first infrared transmitting tube 3 with second infrared receiving tube 1 is 90 and places, first infrared receiving tube 2 with second infrared receiving tube 1 is 45 and places (the angle can be adjusted according to actual need), and 3 infrared pipes all with the blade plane of rotation coplanar.
Wherein, it should be said, with infrared emission pipe 3 with first infrared receiving tube 2, the angle of second infrared receiving tube 1 sets up to 90 jiaos, 135 jiaos respectively, it is only the utility model discloses a one of them of many feasible embodiments, not be restricted to 90 jiaos, 135 jiaos, can also adjust to other angle relations according to practical application, do not describe here in detail one by one.
Furthermore, in the embodiment of the present invention, in order to rationalize the structure, the sensor main body further includes a housing 5 for mounting and fixing each component, and the fluid passage is provided in the housing 5. Preferably, the fluid channel has a circular cross-section.
An embodiment of the utility model provides a flowmeter is still provided, including power, signal processor and as above-mentioned turbine flow sensor, the power respectively with signal processor infrared detection module electricity is connected, signal processor's data end with infrared detection module's signal output part is connected.
When the rotatable blades 4 rotate, the blades rotate to a specific angle, infrared light rays emitted by the infrared emission tube 3 are reflected to the first infrared receiving tube 2 or the second infrared receiving tube 1 through the blades, are converted into electric signals by the first infrared receiving tube 2 or the second infrared receiving tube 1 and are transmitted to the signal processor, and the electric signals are amplified, shaped and operated by the signal processor to output fluid flow.
The flow rate detection principle of the flowmeter is explained as follows:
when the blade generates positive rotation, the detection process is as follows:
1. when the blade rotates to a specific angle, infrared light rays emitted by the infrared emission tube 3 are reflected to the first infrared receiving tube 2 through the blade and are converted into electric signals by the first infrared receiving tube 2;
2. the blades continue to rotate, the infrared transmitting tube 3 transmits infrared rays and the infrared rays reflected by the blades leave the first infrared receiving tube 2;
3. the blades continue to rotate, infrared light rays emitted by the infrared emission tube 3 are reflected to the second infrared receiving tube 1 through the blades and are converted into electric signals by the second infrared receiving tube 1;
4. the blades continue to rotate, the infrared transmitting tube 3 transmits infrared rays and the infrared rays reflected by the blades leave the second infrared receiving tube 1;
5. the blade rotation repeats the processes 1 to 4.
The signal processor receives the electrical signals generated from the first infrared receiving tube 2 and the second infrared receiving tube 1, amplifies and shapes the electrical signals, and when the blade rotates in the forward direction, the shaped signals are as shown in fig. 5.
When the blades rotate reversely, the detection process is as follows:
1. when the blade rotates to a specific angle, the infrared light emitted by the infrared emission tube 3 is reflected to the second infrared receiving tube 1 through the blade and is converted into an electric signal by the second infrared receiving tube 1;
2. the blades continue to rotate, the infrared transmitting tube 3 transmits infrared rays and the infrared rays reflected by the blades leave the second infrared receiving tube 1;
3. the blades continue to rotate, infrared light rays emitted by the infrared emission tube 3 are reflected to the first infrared receiving tube 2 through the blades and are converted into electric signals by the first infrared receiving tube 2;
4. the blades continue to rotate, the infrared transmitting tube 3 transmits infrared rays and the infrared rays reflected by the blades leave the first infrared receiving tube 2;
5. the blade rotation repeats the processes 1 to 4.
The signal processor receives the electrical signals generated from the first infrared receiving tube 2 and the second infrared receiving tube 1, amplifies and shapes the electrical signals, and the shaped signals are as shown in fig. 6 when the blade rotates in the forward direction.
Referring to fig. 7, during the forward rotation or reverse rotation of the rotatable blade 4, the 4 signal states (b01, b00, b10, b00) are set for each rotation of the blade, the states when the two signals are b01 are assigned, the interval time T (T2-T1) is calculated according to the rotation speedAnd calculating the rotation speed of the blade.
Because the fluid flow velocity and the blade are in a positive proportional relationship, the fluid flow velocity is V1 ═ a × Vr (a is a calibration parameter and is measured and calculated according to actual conditions), the inner diameter of the through hole of the sensor is D, and the calculated flow can be obtained
To sum up, the embodiment of the utility model provides a turbine flow sensor and flowmeter has following beneficial effect:
1. through carrying out institutional advancement to turbine flow sensor, use infrared detection module to replace current magnetic field detection mode, avoided turbine flow sensor from the root to receive peripheral magnetic field interference, need not additionally to carry out antimagnetic processing to be favorable to improving flow detection's accuracy and reliability.
2. The flow guide pieces are arranged in the front and back directions of the fluid channel, so that when the turbine flow sensor is applied to flow detection, flow can enter from the front end or the back end of the fluid channel and cause the rotatable blades 4 to rotate, the infrared detection module can acquire signals, and the flow signal acquisition function is realized.
3. Through the diversion of the front diversion part 7 and the rear diversion part 6, the signal processor can detect the flowing direction of the fluid according to the optical signals of the first infrared receiving tube 2 and the second infrared receiving tube 1.
4. The turbine flow sensor has simple structure and low cost.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is communication connection between them, and specifically, the connection relationship can be implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (10)

1. The turbine flow sensor is characterized by comprising a sensor main body, wherein the sensor main body is provided with a fluid channel and a flow guide device;
a rotatable blade and an infrared detection module for detecting the rotation angle and the rotation direction of the rotatable blade are arranged in the fluid channel, and the flow guide device comprises a front flow guide part and a rear flow guide part;
the front guide piece is positioned in the fluid passage on one side of the rotatable blade, and the rear guide piece is positioned in the fluid passage on the other side of the rotatable blade.
2. The turbine flow sensor according to claim 1, wherein a plurality of first flow deflectors are disposed in the front flow guide member, and a flow guide channel formed by the plurality of first flow deflectors in the front flow guide member communicates with an opening at one end of the flow guide channel and the flow guide channel where the rotatable blade is disposed;
and a plurality of second flow deflectors are arranged in the rear flow guide part, and a flow guide channel formed by the second flow deflectors in the rear flow guide part is communicated with an opening at the other end of the fluid channel and the fluid channel where the rotatable blade is positioned.
3. The turbine flow sensor of claim 2 wherein a plurality of the first vanes are parallel to each other and a plurality of the second vanes are parallel to each other, wherein one of the first vanes is parallel to or collinear with one of the second vanes.
4. The turbine flow sensor of claim 2 or 3 wherein a plurality of the first flow deflectors are obliquely disposed within the forward flow guide and a plurality of the second flow deflectors are obliquely disposed within the aft flow guide.
5. The turbine flow sensor of claim 1 wherein the rotatable vanes comprise a rotating shaft and at least two reflective vanes mounted on the rotating shaft that reflect infrared light;
the infrared detection module comprises an infrared transmitting tube, a first infrared receiving tube and a second infrared receiving tube, and infrared rays emitted by the infrared transmitting tube are transmitted to the first infrared receiving tube or the second infrared receiving tube through the reflective blades.
6. The turbine flow sensor of claim 5 wherein the light emitting end of the infrared emitting tube is at a 90 ° angle to the receiving end of the first infrared receiving tube about the center of the rotatable blade;
the light emitting end of the infrared emission tube and the receiving end of the second infrared receiving tube form an angle of 135 degrees with respect to the center of the rotatable blade, and the first infrared receiving tube is positioned between the second infrared receiving tube and the infrared emission tube.
7. The turbine flow sensor of claim 1 wherein the sensor body further comprises a housing, the fluid passage being disposed within the housing.
8. The turbine flow sensor of claim 1 wherein the fluid passage is circular in cross-section.
9. The turbine flow sensor of claim 5 wherein the infrared transmitting tube, the first infrared receiving tube, the second infrared receiving tube, and the axis of rotation are located on a same plane.
10. A flowmeter, comprising a power supply, a signal processor and a turbine flow sensor according to any one of claims 1 to 9, wherein the power supply is electrically connected with the signal processor and the infrared detection module respectively, and a data terminal of the signal processor is connected with a signal output terminal of the infrared detection module.
CN201922119918.9U 2019-11-28 2019-11-28 Turbine flow sensor and flowmeter Active CN210922719U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110806239A (en) * 2019-11-28 2020-02-18 广州瑞普医疗科技有限公司 Turbine flow sensor, flowmeter and flow detection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110806239A (en) * 2019-11-28 2020-02-18 广州瑞普医疗科技有限公司 Turbine flow sensor, flowmeter and flow detection method

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