CN111623834A - Flow metering mechanism and flow calculating method - Google Patents
Flow metering mechanism and flow calculating method Download PDFInfo
- Publication number
- CN111623834A CN111623834A CN202010460162.9A CN202010460162A CN111623834A CN 111623834 A CN111623834 A CN 111623834A CN 202010460162 A CN202010460162 A CN 202010460162A CN 111623834 A CN111623834 A CN 111623834A
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- magnetic block
- metering mechanism
- flow metering
- flow
- rotor
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- 230000007246 mechanism Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 230000008569 process Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009347 mechanical transmission Effects 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000003345 natural gas Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- 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
- G01F1/10—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 using rotating vanes with axial admission
- G01F1/11—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 using rotating vanes with axial admission with mechanical coupling to the indicating device
-
- 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
- G01F1/10—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 using rotating vanes with axial admission
- G01F1/115—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 using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device
- G01F1/1155—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 using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device with magnetic coupling only in a mechanical transmission path
-
- 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
- G01F15/06—Indicating or recording devices
- G01F15/065—Indicating or recording devices with transmission devices, e.g. mechanical
- G01F15/066—Indicating or recording devices with transmission devices, e.g. mechanical involving magnetic transmission devices
-
- 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
- G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a flow metering mechanism, which relates to the technical field of flowmeters and comprises: the magnetic driving device comprises a rotor, a driving gear, a magnetic base, an outer magnetic block, an inner magnetic block, a transmission rod and a transmission set. The transmission set is driven to rotate in a magnetic force mode through the rotor, the outer magnetic block and the inner magnetic block, and mechanical metering data are obtained through an external mechanical counter connected with the transmission set. The periodic rotation of the rotor is transmitted to an external mechanical counter, and the mechanical counter calculates the gear ratio in the gear train according to the volume number discharged by the rotor per revolution, so as to display the correct flow. According to the invention, a set of mechanical transmission structure is added on the flow metering mechanism to display mechanical metering data for comparison with electronic metering data, so that the accuracy of the working condition data of the flow metering mechanism can be ensured. In addition, when one of the meters is in failure and in the process of maintenance, normal metering and display of the flowmeter can be ensured.
Description
Technical Field
The invention relates to the technical field of flowmeters, in particular to a flow metering mechanism.
Background
The metering of natural gas as a high-quality energy and chemical raw material is more and more concerned by people, and especially the metering of trade natural gas is very important internationally. Metering management is developed from post-metering dispute interpretation to pre-process management. With the development of market economy, people pay more and more attention to natural gas metering, especially trade metering. Therefore, people are fundamentally changing the management concept of natural gas metering, and not only are the use of field metering devices and corresponding personnel managed, but also the management and development of advanced instrument purchasing type selection, installation and use, process control, quality supervision, data management and real-flow verification are enhanced from the post-metering dispute explanation.
Therefore, the accuracy of the measurement data of the metering instrument is very important, most instruments are electronic data display at present, and if the electronic instruments are subjected to magnetic field interference, signal transmission problems and other factors to cause abnormal operation, errors of the measurement data can be caused, and trade disputes and other problems can be caused.
Disclosure of Invention
One of the purposes of the invention is to solve the problem of trade disputes caused by abnormal electronic data during the metering of natural gas in the prior art.
The invention also aims to provide a flow calculation method.
In order to achieve one of the purposes, the invention adopts the following technical scheme: a flow metering mechanism having an air inlet and an air outlet, wherein the flow metering mechanism comprises: a rotor having at least two, the rotor disposed between the gas inlet and the gas outlet; the driving gear is arranged at one end of the rotor, and the driving gears are meshed with each other; the magnetic seat is arranged at the other end of the rotor; the outer magnetic block is arranged on the magnetic seat; the inner magnetic block corresponds to the outer magnetic block, and a gap is formed between the inner magnetic block and the outer magnetic block; one end of the transmission rod is connected with the inner magnetic block; and the transmission set is connected with the transmission rod. The rotors are matched in a contact or non-contact manner, the rotors are 8-shaped, notches are formed in the positions of two sides of the tip ends of the rotors in the length direction, and the arc tip ends of the rotors are made of aluminum materials. Reduce the friction of two rotors through this breach or can hold the medium with the short time through this breach that produces under the external force vibration, with the help of the medium pressure boost in this breach (the breach is greater than distance between the rotor, when the medium flows, this breach can bear more mobile effort of medium), give the more agile reaction of gear, make the transmission group can obtain smooth and easy motion, and can also guarantee smooth and easy current (current efficiency is strong) of flow, and the function of breach on the rotor can also prevent that there is small impurity or greasy dirt etc. inside, can the rotation to in the breach, be unlikely to the rotation that influences the rotor, produce the card table phenomenon. In addition, the aluminum arc tip with light weight can avoid vibration generated when welding slag is mixed in the flow medium, so that the tip is damaged by strong inertia force to influence flow measurement.
In the technical scheme, the medium pushes the rotors to rotate, and the rotors keep correct relative positions under the interaction of the driving gears under the rotors, so that the rotors keep the optimal working clearance or the optimal contact force; the driving gear rotates to drive at least two rotors to synchronously rotate, and at the moment, the outer magnetic blocks fixed on the rotors rotate to push the inner magnetic blocks to synchronously rotate under the action of repulsive force or attractive force; and a transmission rod connected with the inner magnetic block synchronously rotates to drive the transmission group to rotate, and mechanical metering data is obtained through an external mechanical counter connected with the transmission group.
Further, in the embodiment of the present invention, the magnetic base is a concave structure, and the outer magnetic blocks are distributed on the inner wall of the concave magnetic base.
Further, in the embodiment of the present invention, the inner magnetic block is located above or near the outer magnetic block.
Furthermore, in the embodiment of the invention, the outer magnet blocks are distributed on the magnet seat at intervals.
Furthermore, in the embodiment of the invention, the inner magnetic blocks are connected to the transmission rod at intervals, and the inner magnetic blocks are inserted between the outer magnetic blocks.
Furthermore, in the embodiment of the invention, the inner magnetic block is half wrapped by the outer magnetic block.
Further, in an embodiment of the present invention, the flow metering mechanism further includes: an electronic meter that calculates flow through a sensor.
Further, in the embodiment of the present invention, a bearing is further disposed in the flow metering mechanism, and the transmission rod is disposed on the bearing.
Further, in the embodiment of the present invention, a mechanical counter is installed on the transmission set.
Further, in the embodiment of the invention, the transmission set is formed by mutually meshing a plurality of transmission gears.
The invention has the beneficial effects that:
the transmission set is driven to rotate in a magnetic force mode through the rotor, the outer magnetic block and the inner magnetic block, the transmission set drives the input shaft at the bottom of the mechanical counter installed on the transmission set to rotate, so that the periodic rotation of the rotor is transmitted to the external mechanical counter, and the mechanical counter calculates the gear ratio in the transmission set according to the volume number discharged by the rotor during each rotation to display correct flow. According to the invention, a set of mechanical transmission structure is added on the flow metering mechanism to display mechanical metering data for comparison with electronic metering data, so that the accuracy of the working condition data of the flow metering mechanism can be ensured. In addition, when one of the meters is in fault and is in the process of maintenance, normal metering and display of the flow meter can be guaranteed, and the problem of trade disputes is solved.
In order to achieve the second purpose, the invention adopts the following technical scheme: a flow calculation method comprising the steps of:
the rotors are driven to rotate by the medium, and the rotors keep correct relative positions under the interaction of the driving gears below the rotors, so that the rotors keep the optimal working clearance or the optimal contact force.
The magnetic force pushes, the driving gear rotates to drive at least two rotors to rotate synchronously, and at the moment, the outer magnetic blocks fixed on the rotors rotate to push the inner magnetic blocks to rotate synchronously under the action of repulsive force or attractive force.
And mechanical data are acquired, a transmission rod connected with the inner magnetic block synchronously rotates to drive a transmission group consisting of a plurality of transmission gears to rotate, and mechanical metering data are acquired through a mechanical counter connected with the transmission gears.
Further, in an embodiment of the present invention, the mechanical metering data on the mechanical counter is obtained from calculating the transmission gear ratio.
Further, in the embodiment of the present invention, while the mechanical data is acquired, the electronic metering data is also acquired by the electronic meter according to the sensor.
Further, in the embodiment of the invention, the transmission gear ratio data is calculated by the electronic metering data while the electronic metering data is acquired, so as to ensure the consistency of the mechanical metering data and the electronic metering data.
Drawings
Fig. 1 is a schematic structural diagram of a flow metering mechanism according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view taken at P-P of fig. 1.
Fig. 3 is a partially enlarged view of a in fig. 1.
Fig. 4 is a partially enlarged view B of fig. 1.
In the attached drawings
1. Rotor 11, notch 12, tip
2. Drive gear 3, magnetic base 4, outer magnetic block
5. Inner magnetic block 6, bearing 7 and transmission rod
8. Transmission gear 9 and transmission set
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to these specific details. In some instances, well-known flow calculation methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
The first embodiment is as follows:
a flow metering mechanism having an air inlet and an air outlet, wherein, as shown in fig. 1-4, the flow metering mechanism comprises: rotor 1, drive gear 2, magnet holder 3, outer magnetic block 4, interior magnetic block 5, transfer line 7, transmission group 9.
The number of the rotors 1 is at least two, and the rotors 1 are arranged between the air inlet and the air outlet.
A driving gear 2 is provided at one end of the rotor 1, and the driving gears 2 are engaged with each other. The magnet holder 3 is provided at the other end of one of the rotors 1. The outer magnetic block 4 is arranged on the magnetic base 3. The inner magnetic block 5 corresponds to the outer magnetic block 4, and a gap is formed between the inner magnetic block 5 and the outer magnetic block 4. One end of the transmission rod 7 is connected with the inner magnetic block 5. The transmission group 9 is connected with the transmission rod 7.
The rotors 1 are matched in a contact or non-contact manner, the rotors 1 are 8-shaped, notches 11 are formed in the positions of two sides of the tips 12 in the length direction, and the positions of the arc tips 12 of the rotors 1 are made of aluminum materials. Reduce the friction of two rotors 1 through this breach 11 or can be at the friction that external force vibration produced and hold the medium through this breach 11 for a short time, with the help of the medium pressure boost in this breach 11 (breach 11 is greater than the distance between the rotor 1, when the medium flows, this breach 11 can bear more mobile effort of medium), give the more swift reaction of gear, make transmission group 9 can obtain smooth and easy motion, and can also guarantee the smooth and easy current (current efficiency is strong) of flow, and the function of the breach on the rotor can also prevent that the inside has small impurity or greasy dirt etc. can the rotation to in the breach, be unlikely to influence the rotation of rotor, produce the card table phenomenon. In addition, the arc-shaped tip 12 made of aluminum materials can avoid the phenomenon that the tip 12 is damaged by strong inertia force and the measurement data is influenced because the tip 12 vibrates when welding slag is mixed into a flow medium.
Preferably, the inner magnet block 5 is located above or near the outer magnet block 4.
Preferably, as shown in fig. 4, the magnetic base 3 is a concave structure, and the outer magnetic blocks 4 are distributed on the inner wall of the concave magnetic base 3. The outer magnetic blocks 4 are distributed on the magnetic base 3 at intervals. The inner magnetic blocks 5 are connected to the transmission rod 7 at intervals, and the inner magnetic blocks 5 are inserted between the outer magnetic blocks 4.
The inner magnetic block 5 is half wrapped by the outer magnetic block 4.
According to the invention, the specific arrangement of the outer magnetic block 4 and the inner magnetic block 5 is adopted on the flow metering mechanism, so that lubricating oil is not required to be added at the position when the flow metering mechanism is driven by magnetic force, and the pollution is reduced. The magnetic block 5 in the second plane can not be influenced by the vibration on the outer magnetic block 4 (the inner magnetic block 5 and the outer magnetic block 4 are not easy to separate from each other due to the vertical vibration in the penetrating mode, and the phenomenon of short magnetic transmission effect is not easy to occur during metering), so that the mechanical metering data is not wrong. In the third aspect, a plurality of acting force nodes are generated between the inner magnetic block 5 and the outer magnetic block 4 in an interpenetration mode, so that the reaction process is strengthened, the outer magnetic block 4 is favorable for stably pushing the inner magnetic block 5, and the accuracy of mechanical metering data is guaranteed. The fourth aspect is advantageous in reducing noise and also facilitates quick replacement of damaged parts.
Preferably, the flow metering mechanism further comprises an electronic meter which calculates the flow rate via the sensor. The sensor may be a flow sensor.
Preferably, a bearing 6 is further arranged in the flow metering mechanism, and the transmission rod 7 is arranged on the bearing 6.
Preferably, a mechanical counter is mounted on the transmission group 9.
Preferably, as shown in fig. 1 and 3, the transmission set 9 is formed by a plurality of transmission gears 8 which are meshed with each other.
A flow calculation method comprising the steps of:
the rotor 1 is driven to rotate by the medium, and the rotor 1 keeps the correct relative position under the interaction of the driving gears 2 under the rotor 1, so that the optimal working clearance or the optimal contact force between the rotors 1 is kept.
The magnetic force pushes, the driving gear 2 rotates to drive at least two rotors 1 to rotate synchronously, and at the moment, the outer magnetic blocks 4 fixed on the rotors 1 rotate to push the inner magnetic blocks 5 to rotate synchronously under the action of repulsive force or attractive force.
And acquiring mechanical data, synchronously rotating a transmission rod 7 connected with the inner magnetic block 5 to drive a transmission group 9 consisting of a plurality of transmission gears 8 to rotate, and acquiring mechanical metering data through a mechanical counter connected with the transmission gears 8.
Preferably, the mechanical metering data on the mechanical counter is obtained from calculating the transmission gear ratio.
Preferably, the mechanical data is acquired simultaneously with the electronic metering data being acquired from the sensor by the electronic meter.
More preferably, the transmission gear ratio data is calculated from this data while the electronic metering data is acquired to ensure consistency of the mechanical metering data with the electronic metering data.
The invention drives the transmission set to rotate in a magnetic manner through the rotor, and the transmission set drives the input shaft at the bottom of the mechanical counter installed on the transmission set to rotate due to the rotation of the transmission set, so that the periodic rotation of the rotor is transmitted to the external mechanical counter, and the mechanical counter calculates the gear ratio in the transmission set according to the volume number discharged by the rotor per revolution to display correct flow. According to the invention, a set of mechanical transmission structure is added on the flow metering mechanism to display mechanical metering data for comparison with electronic metering data, so that the accuracy of the working condition data of the flow metering mechanism can be ensured. In addition, when one of the meters is in fault and is in the process of maintenance, normal metering and display of the flow meter can be guaranteed, and the problem of trade disputes is solved.
Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.
Claims (10)
1. A flow metering mechanism having an air inlet and an air outlet, wherein the flow metering mechanism comprises:
a rotor having at least two, the rotor disposed between the gas inlet and the gas outlet;
the driving gear is arranged at one end of the rotor, and the driving gears are meshed with each other;
the magnetic seat is arranged at the other end of the rotor;
the outer magnetic block is arranged on the magnetic seat;
the inner magnetic block corresponds to the outer magnetic block, and a gap is formed between the inner magnetic block and the outer magnetic block;
one end of the transmission rod is connected with the inner magnetic block;
and the transmission set is connected with the transmission rod.
2. The flow metering mechanism of claim 1, wherein the magnetic base is a concave structure, and the outer magnetic blocks are distributed on the inner wall of the concave magnetic base.
3. The flow metering mechanism of claim 1, wherein the inner magnetic block is located above or near the outer magnetic block.
4. The flow metering mechanism of claim 2, wherein the outer magnets are spaced apart on the magnet holder.
5. The flow metering mechanism of claim 4, wherein the inner magnets are spaced apart from one another on the drive rod, the inner magnets being interleaved between the outer magnets.
6. The flow metering mechanism of claim 2, wherein the inner magnetic block is semi-wrapped by the outer magnetic block.
7. The flow metering mechanism of claim 1, further comprising:
an electronic meter that calculates flow through a sensor.
8. The flow metering mechanism of claim 1, further comprising a bearing disposed within the flow metering mechanism, wherein the drive rod is disposed on the bearing.
9. The flow metering mechanism of claim 1, wherein a mechanical counter is mounted on the drive train.
10. The flow metering mechanism of claim 1, wherein the drive train is comprised of a plurality of drive gears intermeshed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460162.9A CN111623834A (en) | 2020-05-27 | 2020-05-27 | Flow metering mechanism and flow calculating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460162.9A CN111623834A (en) | 2020-05-27 | 2020-05-27 | Flow metering mechanism and flow calculating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111623834A true CN111623834A (en) | 2020-09-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010460162.9A Pending CN111623834A (en) | 2020-05-27 | 2020-05-27 | Flow metering mechanism and flow calculating method |
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| Country | Link |
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| CN (1) | CN111623834A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1022020A (en) * | 1963-11-04 | 1966-03-09 | Rockwell Mfg Co | Rotary gas-flow meter |
| CN203587145U (en) * | 2013-12-02 | 2014-05-07 | 安徽天维仪表有限公司 | Rotor flow meter |
| CN204330029U (en) * | 2014-12-30 | 2015-05-13 | 信东仪器仪表（苏州）有限公司 | A kind of New rotameter axle is by assembly |
| CN212300449U (en) * | 2020-05-27 | 2021-01-05 | 信东仪器仪表（苏州）股份有限公司 | Flow metering mechanism |
-
2020
- 2020-05-27 CN CN202010460162.9A patent/CN111623834A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1022020A (en) * | 1963-11-04 | 1966-03-09 | Rockwell Mfg Co | Rotary gas-flow meter |
| CN203587145U (en) * | 2013-12-02 | 2014-05-07 | 安徽天维仪表有限公司 | Rotor flow meter |
| CN204330029U (en) * | 2014-12-30 | 2015-05-13 | 信东仪器仪表（苏州）有限公司 | A kind of New rotameter axle is by assembly |
| CN212300449U (en) * | 2020-05-27 | 2021-01-05 | 信东仪器仪表（苏州）股份有限公司 | Flow metering mechanism |
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