CN106949939B - Gas turbine flowmeter with double high-frequency detection - Google Patents
Gas turbine flowmeter with double high-frequency detection Download PDFInfo
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- CN106949939B CN106949939B CN201710365315.XA CN201710365315A CN106949939B CN 106949939 B CN106949939 B CN 106949939B CN 201710365315 A CN201710365315 A CN 201710365315A CN 106949939 B CN106949939 B CN 106949939B
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- turbine
- pulse generator
- frequency pulse
- shell
- flowmeter
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- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 239000000523 sample Substances 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 101100327310 Caenorhabditis elegans emb-27 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/3236—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using guide vanes as swirling means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/325—Means for detecting quantities used as proxy variables for swirl
- G01F1/3287—Means for detecting quantities used as proxy variables for swirl circuits therefor
Abstract
The invention provides a gas turbine flowmeter with double high-frequency detection, which comprises a shell, a turbine measuring core speed reducing mechanism and a turbine shaft, wherein the turbine measuring core speed reducing mechanism is arranged in the shell, the turbine shaft is movably arranged on the turbine measuring core speed reducing mechanism, a turbine capable of rotating circumferentially is fixed on the turbine shaft, a plurality of through holes are formed in the side wall of the turbine, and the circle centers of the through holes are all positioned on the same circumference; the shell is provided with a first high-frequency pulse generator which extends into the metering bin assembly and is opposite to blades on the turbine; the device also comprises a second high-frequency pulse generator which is composed of a generator body arranged on the shell and a probe arranged on the turbine measuring core speed reducing mechanism, wherein the probe is connected with the generator body through a signal wire, and the medium drives the turbine to rotate through the flowmeter so that the first high-frequency pulse generator and the second high-frequency pulse generator work and respectively send out signals. The flowmeter has the advantages of having double high-frequency detection generators, and further improving the accuracy and the precision of the flowmeter.
Description
Technical Field
The invention relates to the field of metering, in particular to a gas turbine flowmeter with double high-frequency detection.
Background
The gas turbine flowmeter is a speed type instrument, has the advantages of high accuracy and high repeatability, has the advantages of simple overall structure, wide measuring range ratio and the like, is widely used in long-distance gas conveying pipelines, is widely used in pipeline networks for metering, is mainly used in large-flow main pipelines such as pressure regulating stations and the like in urban gas conveying networks, and needs long-time operation, so that the flowmeter is particularly important for normally outputting metering signals.
In the prior art, a gas turbine flowmeter is provided with a mechanical counter, a high-frequency component is arranged on the circumferential direction of a turbine and is arranged at a dislocation angle, the rotation direction of the turbine in the flowmeter is detected through the phase difference of output signals, the high-frequency component is not used for detecting the rotation signal of the turbine and calculating and metering, and even if the existing high-frequency component is directly used for detecting the rotation signal of the turbine and converting the rotation signal into a metering signal of the flowmeter, the high-frequency component is arranged on the circumferential direction of the turbine and only can detect blades of the turbine, so that inaccurate metering can be directly caused when the blades are damaged. Even if a plurality of high-frequency components detect the turbine blade at the same time, only signals with only periodic differences can be output, and the signals are the same parameters for measurement, and certainly, whether the turbine blade is damaged or not cannot be judged according to the same parameters, and trade loss is easily caused when the turbine blade is damaged for a long time. The existing flowmeter has the problems that the detecting signal of the flowmeter is single, whether the turbine blade is damaged or not cannot be visually detected, and the like, and whether the turbine blade is damaged or not is directly related to the metering accuracy, and the use condition cannot be accurately judged by the single signal, so that the continuous use time of the flowmeter is reduced, and the maintenance frequency is increased.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a gas turbine flowmeter with double high-frequency detection, which solves the problems that the output of a detection signal is single, whether a turbine blade is damaged or not cannot be intuitively judged, and the continuous use time is short.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a gas turbine flowmeter with two high frequency detection, includes shell and installs the measurement storehouse subassembly in the shell, and this measurement storehouse subassembly includes turbine measurement core reducing gear and the turbine axle of activity on turbine measurement core reducing gear, is fixed with the turbine that can circumferentially rotate on this turbine axle, open a plurality of through-holes on the lateral wall of turbine, and the centre of a circle of through-hole all is located same circumference; the shell is provided with a first high-frequency pulse generator which extends into the metering bin assembly and is opposite to blades on the turbine; the device also comprises a second high-frequency pulse generator which comprises a generator body arranged on the shell and a probe arranged on the turbine measuring core speed reducing mechanism, the probe is connected with the generator body through a signal wire, and the medium drives the turbine to rotate through the flowmeter so that the first high-frequency pulse generator and the second high-frequency pulse generator work and respectively send out signals.
After the turbine rotation speed reaches the quantifiable rotation speed, the first high-frequency pulse generator sends out a rotation signal detected from the turbine blade when the turbine blade rotates past the opposite position of the first high-frequency pulse generator; the side wall of the turbine is provided with a through hole, when the through hole is opposite to the probe of the second high-frequency pulse generator, the through hole does not work, when the probe of the second high-frequency pulse generator is opposite to the side wall without holes, the detected rotation signals are sent out, the two rotation signals detected by the first high-frequency pulse generator and the second high-frequency pulse generator are respectively connected into a computer or other devices through signal wires, and the computer or other devices process the received signals and obtain corresponding data, so that the metering data of the flowmeter is obtained. The device can be used as a plurality of signal sources for flowmeter detection, and can primarily judge that the blade is damaged or a high-frequency signal generator is in problem when the difference between two groups of data is large, and the signals sent by the second high-frequency pulse generator are used, so that the customer is ensured not to cause economic loss. Particularly, two high-frequency signal modes of high speed and low speed are adopted, and a signal processing method based on digital filtering and a traditional signal processing method are effectively combined, so that the performance requirement of the flowmeter in the whole measuring range is effectively met.
Compared with the prior art, the invention has the following beneficial effects:
1. the side wall of the turbine is provided with a through hole, a second high-frequency pulse generator is used for detecting the rotation signal, the side wall of the turbine has high stability and wear resistance, the reliability of outputting the rotation signal is guaranteed, and the first high-frequency pulse generator arranged on the circumference of the blade can detect the rotation signal at the same time, namely, the rotation signals obtained in two modes can be output at the same time, and the rotation signals are not influenced by each other;
2. when the rotation signal sent by the first high-frequency pulse generator and the rotation signal sent by the second high-frequency pulse generator have a larger difference, the damage of the turbine blade can be primarily judged, and the phenomenon of the time point and the loss condition of the problem can be intuitively judged by the waveform chart formed by the output signals;
3. the first high-frequency pulse generator and the second high-frequency pulse generator output two distinct parameters aiming at the same rotating turbine, and even under the condition that the metering of the first high-frequency pulse generator is inaccurate due to the damage of the blades, the stable detection of the second high-frequency pulse generator can be ensured, and the metering accuracy and precision of the flowmeter are further improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a schematic view of a turbine structure according to the present invention.
In the figure, a housing 1, a first mount 101, a second mount 102, a counter mount 103, a metering assembly 2, a turbine measuring core speed reducing mechanism 201, a turbine shaft 202, a turbine 3, a through hole 30, a first high-frequency pulse generator 4, a second high-frequency pulse generator 5, a generator body 50, a probe 51, a front pod 6, a rear pod 7, a transmission mechanism 8, and a mechanical counter 9.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the gas turbine flowmeter with dual high frequency detection according to the present invention comprises a housing 1 and a metering assembly 2 installed in the housing 1, wherein an upward protruding counter mounting seat 103 is provided at the upper side of the housing 1, and a transmission mechanism 8 is installed in the counter mounting seat 103, the transmission mechanism 8 comprises a rotatable input shaft, an input gear is provided at the lower end of the input shaft, the upper end of the input shaft transmits the rotation power of the input shaft to an output gear located in the mounting seat through a magnetic coupling transmission member, the output gear of the transmission mechanism 8 is connected with a mechanical counter 9 installed on the counter mounting seat 103, the input gear of the transmission mechanism 8 extends into the metering assembly 2 and is connected to an output member on the turbine shaft 202, and when the turbine shaft 202 rotates, the rotation motion of the turbine shaft 202 is transmitted to the mechanical counter 9 through the transmission mechanism 8, so that the counting word wheel rotates, thereby metering the gas flowing through the flowmeter. The front end of the metering assembly 2 is provided with a front fairing 6 and is locked by screws, the rear end of the metering assembly 2 is provided with a rear fairing 7, and the front fairing 6, the metering assembly 2 and the rear fairing 7 are placed into the shell 1 and then are tightly pressed on the shell 1 by a locking thread ring. The metering assembly 2 comprises a turbine measuring core speed reducing mechanism 201 and a turbine shaft 202 movably arranged on the turbine measuring core speed reducing mechanism 201, a turbine 3 capable of rotating circumferentially is fixed on the turbine shaft 202, a plurality of through holes 30 are formed in the side wall of the turbine 3, the circle centers of the through holes 30 are all located on the same circumference, and the number of the through holes 30 can be determined according to the size of the drift diameter of the flowmeter.
As shown in fig. 1-2, a first mounting seat 101 and a second mounting seat 102 protruding outwards are arranged on the outer circumference of the shell 1, the first mounting seat 101 and the second mounting seat 102 are arranged side by side and are communicated with the inside of the shell 1, for convenience in installation and use, threads are further arranged in inner holes of the first mounting seat 101 and the second mounting seat 102, the threads are fine threads of M20 x 1.5, and the depth is not less than 20mm. The first high-frequency pulse generator 4 is screwed on the first mounting seat 101 through threads, the front end of the first high-frequency pulse generator 4 stretches into the metering assembly 2 and faces the blades on the turbine 3, and when the blades of the turbine 3 pass right below, the detection part at the front end of the first high-frequency pulse generator 4 generates induction signals and processes the induction signals into rotation signals of the turbine 3; the second high-frequency pulse generator 5 comprises a generator body 50 and a probe 51, wherein the generator is screwed on the second mounting seat 102 through threads, the probe 51 is installed on the turbine measuring core speed reducing mechanism 201 through threads and aligned with the position of the through hole 30 formed in the side wall of the turbine 3, the probe 51 is connected to the generator body 50 through a signal wire, and the probe 51 works in such a way that when the through hole 30 is opposite, the probe 51 does not work, and when the side wall which is not formed is positioned below the probe 51, the probe 51 generates a sensing signal and transmits the sensing signal to the generator body 50 to be processed into a rotating signal of the turbine 3. The detecting part of the first high-frequency pulse generator 4 and the probe 51 of the second high-frequency pulse generator 5 both sense a turner and a turner to sense an object with a rotating speed to generate a sensing signal, and can automatically filter the condition that the rotating speed is lower than a certain rotating speed, thereby avoiding the error condition caused by that the rotating speed does not reach the metering requirement of the flowmeter. When the first high-frequency pulse generator 4 and the second high-frequency pulse generator 5 process the rotation signals, the rotation signals are respectively transmitted to a computer or other devices through signal lines, and the computer or other devices process the received signals into a waveform chart and a passing medium flow value, so that a user can intuitively monitor the metering condition of the turbine flowmeter.
The working principle of the invention is that the mechanical counter 9 on the turbine flowmeter is calibrated, the read value of the counter, the data processed by the first high-frequency pulse generator 4 and the data processed by the second high-frequency pulse generator 5 are optimized and calculated to obtain two inherent contrast coefficients of each flowmeter before use, and the coefficients are put into a computer or other devices. When the flowmeter is formally used, the first high-frequency pulse generator 4 and the second high-frequency pulse generator 5 input the detected rotation signals into a computer in real time to be processed into flow data and a waveform chart, wherein the flow data is used for metering and counting, and the waveform chart is used for visually monitoring the use state of the flowmeter of the turbine 3. Because the reliability of the detection mode of the second high-frequency pulse generator 5 is higher, the output waveform and data can be used as the metering requirement, and the detection mode of the first high-frequency pulse generator 4 can preliminarily judge whether the blades of the turbine 3 are damaged or not, and can check the metering signal output by the second high-frequency pulse generator, so that the metering precision of the turbine flowmeter is further improved. And the double high-frequency pulse generator can ensure that maintenance or maintenance can be performed under the condition of no shutdown under the condition of one occurrence of problems, thereby improving the continuous service time of the turbine flowmeter, improving the precision and lower limit detection sensitivity of the flowmeter, reducing the starting flow and effectively restraining the loss of customers.
In the description of the present invention, it should be noted that the terms "upper", "lower", "first", "second", etc. are merely for convenience of description, and do not imply importance or designation of installation direction.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a gas turbine flowmeter with two high frequency detection, includes shell (1) and installs metering assembly (2) in shell (1), and this metering assembly (2) are including turbine measurement core reducing gear (201) and activity are established turbine axle (202) on turbine measurement core reducing gear (201), are fixed with turbine (3) that can circumferential direction rotate on this turbine axle (202), the rotation of turbine axle (202) is passed through drive mechanism (8) and is passed to mechanical counter (9), drive mechanism (8) include rotatable input shaft, its characterized in that: the side wall of the turbine (3) is provided with a plurality of through holes (30), and the circle centers of the through holes (30) are all positioned on the same circumference; the shell (1) is provided with a first high-frequency pulse generator (4), and the first high-frequency pulse generator (4) stretches into the metering assembly (2) and faces to blades on the turbine (3); the high-frequency pulse generator comprises a shell (1), and is characterized by further comprising a second high-frequency pulse generator (5), wherein the second high-frequency pulse generator (5) comprises a generator body (50) arranged on the shell (1) and a probe (51) arranged on a turbine measuring core speed reducing mechanism (201), the probe (51) is connected with the generator body (50) through a signal wire, and a medium drives a turbine (3) to rotate through a flowmeter so that the first high-frequency pulse generator (4) and the second high-frequency pulse generator (5) work and respectively send out signals.
2. The gas turbine flow meter with dual high frequency detection of claim 1, wherein: a first mounting seat (101) and a second mounting seat (102) which are communicated with the inside of the shell (1) are arranged on the shell (1) and are arranged side by side; the first high-frequency pulse generator (4) is mounted on a first mounting seat (101), and the generator body (50) is mounted on a second mounting seat (102).
3. The gas turbine flow meter with dual high frequency detection of claim 2, wherein: the inner holes of the first mounting seat (101) and the second mounting seat (102) are provided with threads.
4. The gas turbine flow meter with dual high frequency detection of claim 1, wherein: the mechanical counter (9) is arranged on the shell (1), and the mechanical counter (9) is connected with the turbine shaft (202) through a transmission mechanism (8).
5. The gas turbine flow meter with dual high frequency detection of claim 1, wherein: the front end of the metering assembly (2) is provided with a front fairing (6), and the rear end of the metering assembly (2) is provided with a rear fairing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365315.XA CN106949939B (en) | 2017-05-22 | 2017-05-22 | Gas turbine flowmeter with double high-frequency detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365315.XA CN106949939B (en) | 2017-05-22 | 2017-05-22 | Gas turbine flowmeter with double high-frequency detection |
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| Publication Number | Publication Date |
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| CN106949939A CN106949939A (en) | 2017-07-14 |
| CN106949939B true CN106949939B (en) | 2023-12-05 |
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| CN201710365315.XA Active CN106949939B (en) | 2017-05-22 | 2017-05-22 | Gas turbine flowmeter with double high-frequency detection |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860433A (en) * | 2017-12-26 | 2018-03-30 | 重庆前卫克罗姆表业有限责任公司 | The pulse metering device at gas meter, flow meter end |
| CN113252125B (en) * | 2021-05-25 | 2023-08-25 | 宜宾机电一体化研究所 | Wet-type gas flowmeter with high measurement accuracy and metering drum rotation mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1308701A2 (en) * | 2001-10-31 | 2003-05-07 | Elster GmbH | Turbine mass flow meter with diagnostic device |
| CN201828300U (en) * | 2010-10-26 | 2011-05-11 | 河北宏业永泰流体机械股份有限公司 | Flange clamp type temperature and pressure compensation vortex street flowmeter |
| CN201955121U (en) * | 2010-12-15 | 2011-08-31 | 陕西航天动力高科技股份有限公司 | Mechanical/electronic double display turbine flowmeter |
| CN102393236A (en) * | 2011-11-01 | 2012-03-28 | 浙江大学 | Meter coefficient self-correcting method of gas turbine flowmeter |
| CN205449170U (en) * | 2016-03-15 | 2016-08-10 | 天信仪表集团有限公司 | Gaseous turbine flowmeter of intelligence with self -diagnostic function |
| CN206905813U (en) * | 2017-05-22 | 2018-01-19 | 重庆前卫克罗姆表业有限责任公司 | A kind of gas turbine meter with double high-frequency detections |
-
2017
- 2017-05-22 CN CN201710365315.XA patent/CN106949939B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1308701A2 (en) * | 2001-10-31 | 2003-05-07 | Elster GmbH | Turbine mass flow meter with diagnostic device |
| CN201828300U (en) * | 2010-10-26 | 2011-05-11 | 河北宏业永泰流体机械股份有限公司 | Flange clamp type temperature and pressure compensation vortex street flowmeter |
| CN201955121U (en) * | 2010-12-15 | 2011-08-31 | 陕西航天动力高科技股份有限公司 | Mechanical/electronic double display turbine flowmeter |
| CN102393236A (en) * | 2011-11-01 | 2012-03-28 | 浙江大学 | Meter coefficient self-correcting method of gas turbine flowmeter |
| CN205449170U (en) * | 2016-03-15 | 2016-08-10 | 天信仪表集团有限公司 | Gaseous turbine flowmeter of intelligence with self -diagnostic function |
| CN206905813U (en) * | 2017-05-22 | 2018-01-19 | 重庆前卫克罗姆表业有限责任公司 | A kind of gas turbine meter with double high-frequency detections |
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Effective date of registration: 20200710 Address after: Mainz Castile, Germany Applicant after: Elster, Germany Address before: 401121 No. 69, Mount Huangshan Avenue, Yubei District, Chongqing Applicant before: QIANWEI KROMSCHRODER METERS (CHONGQING) Co.,Ltd. |
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