CN118857411B - Variable inner diameter double-turbine flow measurement sensor - Google Patents
Variable inner diameter double-turbine flow measurement sensor Download PDFInfo
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- CN118857411B CN118857411B CN202411364597.8A CN202411364597A CN118857411B CN 118857411 B CN118857411 B CN 118857411B CN 202411364597 A CN202411364597 A CN 202411364597A CN 118857411 B CN118857411 B CN 118857411B
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- 238000005259 measurement Methods 0.000 title claims abstract description 29
- 230000006698 induction Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000005538 encapsulation Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
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- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
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- 230000009977 dual effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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Abstract
本发明涉及流量检测设备技术领域，具体公开了一种可变内径双涡轮流量测量传感器，包括管道壳体，管道壳体内部从前至后依次设置有前端导向器、固定导向器、后端导向器，前端导向器与后端导向器与管道壳体内壁固定；前端导向器与固定导向器之间安装有标准涡轮组，固定导向器与后端导向器之间安装有变径涡轮组，固定导向器通过标准涡轮组与变径涡轮组固定在前端导向器与后端导向器之间；管道壳体表面还嵌装有检测标准涡轮组转速的标准感应组件，以及检测变径涡轮组转速的对比感应组件。本发明采用双涡轮结构，设置标准涡轮及变内径涡轮，其实现多物理参数测量，可消除外部因素的不良影响，测量精度较高，实现混合介质或分时段多种介质的实时测量。
The present invention relates to the technical field of flow detection equipment, and specifically discloses a variable inner diameter twin turbine flow measurement sensor, comprising a pipeline shell, wherein a front end guide, a fixed guide, and a rear end guide are sequentially arranged inside the pipeline shell from front to back, and the front end guide and the rear end guide are fixed to the inner wall of the pipeline shell; a standard turbine group is installed between the front end guide and the fixed guide, and a variable diameter turbine group is installed between the fixed guide and the rear end guide, and the fixed guide is fixed between the front end guide and the rear end guide through the standard turbine group and the variable diameter turbine group; a standard sensing component for detecting the rotation speed of the standard turbine group and a comparative sensing component for detecting the rotation speed of the variable diameter turbine group are also embedded on the surface of the pipeline shell. The present invention adopts a twin turbine structure, and sets a standard turbine and a variable inner diameter turbine, which realizes the measurement of multiple physical parameters, can eliminate the adverse effects of external factors, has high measurement accuracy, and realizes real-time measurement of mixed media or multiple media in different time periods.
Description
Technical Field
The invention relates to the technical field of flow detection equipment, in particular to a variable inner diameter double-turbine flow measurement sensor.
Background
Turbine flow meters typically measure the volumetric flow rate of a flowing medium through a turbine, which is a fixed structure, and the rotational angular velocity of the turbine is proportional to the volumetric flow rate of the flowing medium. The measuring principle is limited, the common turbine flowmeter can only measure the volume flow, even if the number of turbines is increased, namely, the double-turbine flowmeter and the multi-turbine flowmeter only measure the volume flow, the mass flow of a medium cannot be reflected, the mass flow of the medium needs to be compensated through other parameter sensors such as density, temperature and the like, and the compensating measurement form is not suitable for application scenes of various mediums and mixed mediums.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a variable inner diameter double-turbine flow measurement sensor which can realize real-time volume flow measurement, mass flow measurement and density measurement and is applicable to complex measurement scenes.
The variable inner diameter double-turbine flow measuring sensor comprises a pipeline shell, wherein a front end guide, a fixed guide and a rear end guide are sequentially arranged in the pipeline shell from front to back, the front end guide, the rear end guide and the inner wall of the pipeline shell are fixed, a standard turbine set is arranged between the front end guide and the fixed guide, a variable diameter turbine set is arranged between the fixed guide and the rear end guide, the fixed guide is fixed between the front end guide and the rear end guide through the standard turbine set and the variable diameter turbine set, and a standard sensing assembly for detecting the rotating speed of the standard turbine set and a contrast sensing assembly for detecting the rotating speed of the variable diameter turbine set are further embedded on the surface of the pipeline shell.
The working principle of the technical scheme is that the variable inner diameter turbine is adopted for carrying out supplementary measurement, and the volume flow, the mass flow and the medium density can be measured after the processing by combining with a standard turbine signal, and the high-precision measurement is realized. The volumetric flow is measured by resolving the standard turbine output signal and the mass flow is calculated by resolving the difference in the double turbine conversion coefficient K. The medium density is resolved by mass flow and volume flow. The variable inner diameter turbine has its inner diameter variation adjusted to be in linear relation with the pressure applied by the pressure sensing assembly, which is in linear relation with the mass flow of the medium flowing through. The standard impeller can be used for measuring the volume flow, the inner diameter of the impeller combination with the variable inner diameter is changed, the variable inner diameter is proportional to the medium mass flow, and the double impeller output signals are combined, so that the mass flow signals and the medium density information can be output after the signal analysis processing. And the high measurement accuracy can be achieved by combining double impeller signals. The flow meter can be used for flow measurement of various media and flow measurement of mixed media, is generally used for large-caliber flow measurement, and needs high measurement accuracy.
In order to better realize the invention, further, the variable diameter turbine group comprises a variable diameter turbine shaft with a hollow inside, variable diameter magnetic conduction turbine blades are fixed in the middle of the variable diameter turbine shaft, guide grooves are formed in the inner wall of the variable diameter turbine shaft between adjacent variable diameter magnetic conduction turbine blades, variable sliding blocks are arranged in the guide grooves, a connecting rod is fixedly connected to the rear end of each variable sliding block, the other ends of all the connecting rods are fixed at the end parts of a pressure receiving rod, and the other ends of the pressure receiving rods extend from the rear end of the variable diameter turbine shaft and are provided with pressure receiving plates.
In order to better realize the invention, further, tension rods are arranged between at least one group of the change sliding blocks which are symmetrically arranged.
In order to better realize the invention, further, the bearings are arranged at the two ends of the variable-diameter turbine shaft, the bearings at the front end of the variable-diameter turbine shaft are embedded at the rear side of the fixed guide, the bearings at the rear end of the variable-diameter turbine shaft are embedded at the front side of the rear end guide, so that the variable-diameter turbine group is fixed between the fixed guide and the rear end guide in a rolling way, the compression bar is embedded at the rear end of the variable-diameter turbine shaft, and the compression bar can slide back and forth at the rear end of the variable-diameter turbine shaft, so that the connecting rod deforms, and the variable sliding block is pushed or pulled to reciprocate in the guide groove.
In order to better realize the invention, further, the standard turbine group comprises a standard turbine shaft, the middle part of the standard turbine shaft is fixed with a standard magnetic conduction turbine blade, two ends of the standard turbine shaft are provided with bearings, the bearings at the front end of the standard turbine shaft are embedded at the rear side of the front end guide, and the bearings at the rear end of the standard turbine shaft are embedded at the front side of the fixed guide, so that the standard turbine group is fixed between the front end guide and the fixed guide in a rolling way.
In order to better realize the invention, the standard induction assembly further comprises a packaging shell fixed with the outer wall of the pipeline shell, a coil rack is packaged in the packaging shell, a magnet is embedded and fixed in the middle of the coil rack, a plurality of turns of enameled wires are wound and fixed on the outer side of the coil rack, and one end of the magnet is exposed out of the packaging shell and extends towards the inner side of the pipeline shell.
In order to better realize the invention, the structure of the standard sensing component is the same as that of the comparison sensing component, the embedded position of the standard sensing component on the surface of the pipeline shell is matched with the position of the standard turbine group, and the embedded position of the comparison sensing component on the surface of the pipeline shell is matched with the position of the variable-diameter turbine group.
In order to better realize the invention, the front end guide and the rear end guide are fixed in the positioning groove on the inner side of the pipeline shell through the check ring.
Compared with the prior art, the invention has the following advantages:
(1) Compared with a common turbine flowmeter, the invention adopts a double-turbine structure, a standard turbine and a variable-internal-diameter turbine are arranged, the volume flow V is measured through the standard turbine, the medium mass flow Q and the density rho are calculated through measuring the coefficient K 2 of the variable-internal-diameter turbine, and the multi-physical-parameter measurement is realized;
(2) According to the invention, the working environment of the impeller is the same, the coefficient K 1 of the standard turbine is the same as the coefficient K 2 of the variable inner diameter turbine along with the change trend of the medium flow, so that external factors affecting the precision of the medium, the environment and the like can be eliminated, and the measurement precision of each parameter is higher;
(3) The invention can monitor the volume flow, the mass flow and the medium density flowing through the pipeline in real time, can be applied to the real-time measurement of mixed media or various media in time intervals, and can be applied to the special fields of chemical industry, aerospace, ships and the like.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of a variable diameter turbine set according to the present invention;
FIG. 3 is an enlarged cross-sectional view of a standard sensing assembly of the present invention;
FIG. 4 is a schematic diagram of a variation of the variable diameter turbine set according to the present invention.
The device comprises a 1-pipeline shell, a 2-front end guide, a 3-fixed guide, a 4-rear end guide, a 5-standard turbine set, a 51-standard turbine shaft, a 52-standard magnetic conduction turbine blade, a 6-reducing turbine set, a 61-reducing turbine shaft, a 62-reducing magnetic conduction turbine blade, a 63-changing slide block, a 64-connecting rod, a 65-compression rod, a 66-tension rod, a 7-standard induction component, a 71-packaging shell, a 72-coil rack, a 73-magnet, a 74-enameled wire, an 8-comparison induction component, a 9-bearing and a 10-retainer ring.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediary, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
The main structure of the embodiment is shown in fig. 1, and comprises a pipeline shell 1, wherein a front end guide 2, a fixed guide 3 and a rear end guide 4 are sequentially arranged in the pipeline shell 1 from front to back, the front end guide 2 and the rear end guide 4 are fixed with the inner wall of the pipeline shell 1, a standard turbine group 5 is arranged between the front end guide 2 and the fixed guide 3, a variable diameter turbine group 6 is arranged between the fixed guide 3 and the rear end guide 4, the fixed guide 3 is fixed between the front end guide 2 and the rear end guide 4 through the standard turbine group 5 and the variable diameter turbine group 6, and a standard sensing component 7 for detecting the rotating speed of the standard turbine group 5 and a contrast sensing component 8 for detecting the rotating speed of the variable diameter turbine group 6 are further embedded on the surface of the pipeline shell 1.
The specific measurement process is that the turbine size of the variable diameter turbine group 6 is the same as that of the standard turbine group 5 when the variable diameter turbine group is not changed. After the medium enters the pipeline, the two turbines are driven to rotate, and the rotation angular speed omega of the turbines is in direct proportion to the volume flow V of the medium, namely the formula ①:
V=K×ω ①
the corresponding coefficient of the turbine rotation angular speed omega and the medium volume flow V is determined by the impeller structure, and the coefficient K is inversely proportional to the area S of the medium flowable region of the turbine section when the lead parameters of the impeller blades are unchanged, namely the formula ②:
K=ε1/S ②
Where ε 1 is a constant related to the impeller structure.
The turbine is magnetic conduction stainless steel material, and the rotatory angular velocity ω of turbine is measured through the sensing component, and measuring signal is sinusoidal induction signal, and its effective signal is sinusoidal signal's frequency H, and frequency H is directly proportional with angular velocity ω and turbine blade number Z, namely ③:
H=Z×ω ③
The standard sensing component 7 measures the rotation angular speed omega 1 of the standard turbine set 5, corresponding to the frequency signal H 1, and the contrast sensing component 8 measures the rotation angular speed omega 2 of the variable turbine set 6, corresponding to the frequency signal H 2.
The volume flow V of the medium flowing through the sensor pipeline can be calculated by adopting the frequency signal H 1, the volume of the common medium is a constant value, and the volume flow of the standard turbine group 5 is equal to the volume flow of the variable-diameter turbine group 6.
The contrast sensing assembly 8 is located at the forefront end in the flow channel, and the pressure F 1 sensed by the disc is in direct proportion to the mass flow Q of the medium, namely, formula ④:
F1=ε2×Q ④
epsilon 2 is a constant related to the disk structure.
The pressure-receiving rod 65 senses pressure and then moves inwards, meanwhile drives the connecting rod 64 to move, the connecting rod 64 moves to enable the variable sliding block 63 to move according to a specified track, but the sliding blocks are connected by a tension rod 66, the tension rod 66 can be regarded as a spring, the elasticity of the tension rod can prevent the sliding block from moving, when the tension rod 66 elasticity F 2 and the pressure F 1 received by the pressure-receiving rod 65 form balance, the movement of the variable sliding block 63 stops, and the moving distance h 1 of the variable sliding block 63 is in direct proportion to the medium mass flow, namely formula ⑤:
h1=ε3×F1 ⑤
Epsilon 3 is a constant that is structurally related to the tension rod 66 and the connecting rod 64. When the variable slider 63 moves outwards, part of the surface of the variable slider is exposed outside the inner diameter d of the variable diameter magnetic conduction turbine blade 62, that is, the inner diameter d of the variable diameter magnetic conduction turbine blade 62 changes, the area S of the medium flowing area of the turbine section decreases, and the change amount Δs is proportional to the moving distance of the variable slider 63, that is, the formula:
△S=ε4×h1 ⑥
Epsilon 4 is a constant related to the configuration of the change slide 63 and the impeller.
The relationship Δs can be obtained according to equation ②~⑥ with the medium mass flow Q, equation ⑦:
△S=ε2ε3ε4×Q ⑦
That is, the coefficient K 2 of the variable diameter turbine group 6 is a variable quantity, and the coefficient K 1 of the standard turbine group 5 is a definite value, and is not affected by the medium flow.
According to the above characteristics, firstly, the frequency H 1 of the output signal of the standard sensing assembly 7 is measured in combination with the coefficient K 1 of the standard turbine set 5 to calculate the volume flow V of the medium, and then the volume flow V is combined with the frequency H 2 of the output signal of the contrast sensing assembly 8 to calculate the coefficient K 2 of the variable diameter turbine set 6, that is, the formula ⑧:
K2=V×Z/H2 ⑧
The combined inner diameter of the variable diameter turbine group 6 is minimum when no flow is provided, and the turbine sizes of the variable diameter turbine group 6 and the standard turbine group are the same at the moment, so that the initial value of the coefficient K 2 A kind of electronic device is equal to K 1. K 2 decreases the area S of the turbine section medium flowable region due to the movement of the change slide 63 when the medium mass flow rate is Q, and the change is calculated according to equations ⑦ and ② to yield equation ⑨:
K1-K2=ε1×[1/S - 1/（S-△S）] ⑨
and then, the difference between K 1 and K 2 is obtained to have a functional relation ⑩ with the medium mass flow Q:
⑩
The volume flow V and the mass flow Q are thus measured, and the medium density ρ is determined according to equation ⑾:
ρ=Q/V ⑾
example 2:
The present embodiment further defines the structure of the variable diameter turbine group 6 on the basis of the above embodiment, as shown in fig. 2 and 4, the variable diameter turbine group 6 includes a variable diameter turbine shaft 61 with a hollow interior, variable diameter magnetic conductive turbine blades 62 are fixed in the middle of the variable diameter turbine shaft 61, guide grooves are provided on the inner wall of the variable diameter turbine shaft 61 between adjacent variable diameter magnetic conductive turbine blades 62, a variable slider 63 is installed in the guide grooves, a connecting rod 64 is fixedly connected to the rear end of each variable slider 63, the other ends of all the connecting rods 64 are fixed at the end of a pressure receiving rod 65, and the other ends of the pressure receiving rods 65 extend from the rear end of the variable diameter turbine shaft 61 to form a pressure receiving plate. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
Example 3:
In this embodiment, the structure of the variable diameter turbine group 6 is further limited on the basis of the above embodiment, and as shown in fig. 2 and 4, a tension rod 66 is further provided between at least one group of the moving sliders 63 symmetrically arranged with each other. However, the sliding blocks are connected by a tension rod 66, the tension rod 66 can act as a spring, the elasticity of the tension rod 66 can prevent the sliding blocks from moving, and when the tension rod 66 elasticity F 2 and the pressure F 1 born by the compression rod 65 form balance, the movement of the sliding blocks 63 is changed to stop. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
Example 4:
The present embodiment further defines the structure of the variable diameter turbine group 6 on the basis of the above embodiment, as shown in fig. 1, 2 and 4, the two ends of the variable diameter turbine shaft 61 are provided with bearings 9, the bearings 9 at the front end of the variable diameter turbine shaft 61 are embedded in the rear side of the fixed guide 3, the bearings 9 at the rear end of the variable diameter turbine shaft 61 are embedded in the front side of the rear end guide 4, so that the variable diameter turbine group 6 is fixed between the fixed guide 3 and the rear end guide 4 in a rolling manner, the compression bar 65 is embedded in the rear end of the variable diameter turbine shaft 61, and the compression bar 65 can slide back and forth at the rear end of the variable diameter turbine shaft 61, so that the connecting rod 64 deforms, and the variable sliding block 63 is pushed or pulled to reciprocate in the guide groove. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
Example 5:
the structure of the standard turbine group 5 is further defined on the basis of the embodiment, as shown in fig. 1, the standard turbine group 5 comprises a standard turbine shaft 51, standard magnetic conduction turbine blades 52 are fixed in the middle of the standard turbine shaft 51, bearings 9 are arranged at two ends of the standard turbine shaft 51, the bearings 9 at the front end of the standard turbine shaft 51 are embedded at the rear side of the front end guide 2, and the bearings 9 at the rear end of the standard turbine shaft 51 are embedded at the front side of the fixed guide 3, so that the standard turbine group 5 is fixed between the front end guide 2 and the fixed guide 3 in a rolling manner. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
Example 6:
The structure of the standard induction assembly 7 is further defined on the basis of the above embodiment, as shown in fig. 3, the standard induction assembly 7 includes a package housing 71 fixed to the outer wall of the pipe housing 1, a coil frame 72 is packaged in the package housing 71, a magnet 73 is embedded and fixed in the middle of the coil frame 72, a plurality of turns of enameled wires 74 are wound and fixed on the outer side of the coil frame 72, and one end of the magnet 73 is exposed out of the package housing 71 and extends towards the inner side of the pipe housing 1. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
Example 7:
The embodiment further defines the positional relationship between the standard sensing assembly 7 and the comparison sensing assembly 8 on the basis of the above embodiment, as shown in fig. 1, the standard sensing assembly 7 has the same structure as the comparison sensing assembly 8, the position of the standard sensing assembly 7 embedded on the surface of the pipeline housing 1 is matched with the position of the standard turbine group 5, and the position of the comparison sensing assembly 8 embedded on the surface of the pipeline housing 1 is matched with the position of the variable diameter turbine group 6. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
Example 8:
The present embodiment further defines the fixing manner of the front end guide 2 and the rear end guide 4 to the pipe housing 1 on the basis of the above embodiment, and as shown in fig. 1, the front end guide 2 and the rear end guide 4 are both fixed in the positioning grooves on the inner side by the retainer ring 10. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
It will be appreciated that the principles and operation of the components of the variable inner diameter dual turbine flow measurement sensor configuration, such as the standard turbine set 5 and the standard sensing assembly 7, in accordance with one embodiment of the present invention are well known to those skilled in the art and will not be described in detail herein.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (5)
1. A variable inner diameter double-turbine flow measurement sensor is characterized by comprising a pipeline shell (1), wherein a front end guide (2), a fixed guide (3) and a rear end guide (4) are sequentially arranged inside the pipeline shell (1) from front to back, the front end guide (2) and the rear end guide (4) are fixed with the inner wall of the pipeline shell (1), a standard turbine group (5) is arranged between the front end guide (2) and the fixed guide (3), a variable diameter turbine group (6) is arranged between the fixed guide (3) and the rear end guide (4), the fixed guide (3) is fixed between the front end guide (2) and the rear end guide (4) through the standard turbine group (5) and the variable diameter turbine group (6), a standard sensing component (7) for detecting the rotating speed of the standard turbine group (5) and a contrast sensing component (8) for detecting the rotating speed of the variable diameter turbine group (6) are further arranged on the surface of the pipeline shell (1), the variable diameter turbine group (6) comprises a hollow turbine shaft (61) and a variable diameter guide vane (61), a variable diameter guide vane (62) is arranged in the middle of the variable diameter turbine group, the variable diameter guide vane (61) is provided with a variable diameter guide vane (61), the variable diameter guide vane (61) is arranged between the variable diameter guide vane (61), the variable-diameter turbine shaft (61) comprises a variable-diameter turbine shaft (61), a variable-diameter turbine shaft (61) and a variable-diameter turbine guide groove (64), wherein the rear end of each variable-diameter turbine shaft (63) is fixedly connected with a connecting rod (64), the other ends of all the connecting rods (64) are fixed at the end part of a pressure receiving rod (65), the other ends of the pressure receiving rods (65) extend from the rear end of the variable-diameter turbine shaft (61) to form a pressure receiving plate, at least one group of variable-diameter sliding blocks (63) which are symmetrically arranged are also provided with tension rods (66), bearings (9) are arranged at the two ends of the variable-diameter turbine shaft (61), the bearings (9) at the front end of the variable-diameter turbine shaft (61) are embedded at the rear side of the fixed guide (3), the bearings (9) at the rear end of the variable-diameter turbine shaft (61) are embedded at the front side of the rear end guide (4), and the variable-diameter turbine set (6) is fixed between the fixed guide (3) and the rear end guide (4) in a rolling mode, and the pressure receiving rods (65) can reciprocate to slide back and forth at the variable-diameter turbine shaft (61) to reciprocate or reciprocate in the variable-diameter sliding blocks (64).
2. The variable inner diameter double turbine flow measurement sensor according to claim 1, wherein the standard turbine group (5) comprises a standard turbine shaft (51), standard magnetic conduction turbine blades (52) are fixed in the middle of the standard turbine shaft (51), bearings (9) are arranged at two ends of the standard turbine shaft (51), the bearings (9) at the front end of the standard turbine shaft (51) are embedded at the rear side of the front end guide (2), and the bearings (9) at the rear end of the standard turbine shaft (51) are embedded at the front side of the fixed guide (3), so that the standard turbine group (5) is fixed between the front end guide (2) and the fixed guide (3) in a rolling mode.
3. The variable inner diameter double turbine flow measurement sensor according to claim 1, wherein the standard induction component (7) comprises an encapsulation shell (71) fixed with the outer wall of the pipeline shell (1), a coil frame (72) is encapsulated in the encapsulation shell (71), a magnet (73) is embedded and fixed in the middle of the coil frame (72), a plurality of turns of enameled wires (74) are wound and fixed in the middle of the outside of the coil frame (72), and one end of the magnet (73) is exposed out of the encapsulation shell (71) and extends towards the inner side of the pipeline shell (1).
4. A variable inner diameter twin turbine flow measurement sensor according to claim 3, wherein the standard sensing assembly (7) has the same structure as the comparison sensing assembly (8), the position of the standard sensing assembly (7) embedded on the surface of the pipeline housing (1) is matched with the position of the standard turbine group (5), and the position of the comparison sensing assembly (8) embedded on the surface of the pipeline housing (1) is matched with the position of the variable diameter turbine group (6).
5. The variable inner diameter twin turbine flow measurement sensor of claim 1, wherein the front end guide (2) and the rear end guide (4) are both fixed in a positioning groove inside the pipe housing (1) by a retainer ring (10).
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| CN202411364597.8A CN118857411B (en) | 2024-09-29 | 2024-09-29 | Variable inner diameter double-turbine flow measurement sensor |
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| CN202411364597.8A CN118857411B (en) | 2024-09-29 | 2024-09-29 | Variable inner diameter double-turbine flow measurement sensor |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105424103A (en) * | 2014-09-17 | 2016-03-23 | 黑龙江宏宇电站设备有限公司 | Bidirectional variable magnetic resistance type turbine flow switching and delivering device |
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| CN105424103A (en) * | 2014-09-17 | 2016-03-23 | 黑龙江宏宇电站设备有限公司 | Bidirectional variable magnetic resistance type turbine flow switching and delivering device |
| CN106066195A (en) * | 2016-06-14 | 2016-11-02 | 山西传控电子科技有限公司 | Modular flowmeter |
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