CN111693100B - Large-range flowmeter and large-range flow measuring method - Google Patents
Large-range flowmeter and large-range flow measuring method Download PDFInfo
- Publication number
- CN111693100B CN111693100B CN202010727939.3A CN202010727939A CN111693100B CN 111693100 B CN111693100 B CN 111693100B CN 202010727939 A CN202010727939 A CN 202010727939A CN 111693100 B CN111693100 B CN 111693100B
- Authority
- CN
- China
- Prior art keywords
- piston
- piston rod
- channel
- liquid inlet
- inlet channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- G01F1/52—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 measuring the height of the fluid level due to the lifting power of the fluid flow
-
- 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
- G01F15/001—Means for regulating or setting the meter for a predetermined quantity
Abstract
The invention discloses a large-range flowmeter and a flow regulating method thereof, and the large-range flowmeter comprises a shell, wherein the shell comprises a liquid inlet channel, a measuring channel and a liquid outlet channel which are sequentially connected, and the liquid inlet channel is connected with the measuring channel through a channel inlet; a spring and a floater are arranged in the measuring channel; a piston valve seat and a piston rod are arranged in the liquid inlet channel, a return spring is sleeved on the piston rod, and a piston is arranged on the piston rod; the opening control mechanism drives the piston rod to generate at least two stroke changes from an initial state. The large-range flowmeter can provide a function of large-range flow measurement, and the opening control mechanism drives the piston rod to generate a plurality of stroke changes from an initial state, so that the flow range measured by the flowmeter can be infinitely large theoretically. The invention has the advantages of simple structure, sensitive index, high sensitivity and wide measurement range.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a large-range flowmeter and a large-range flow measuring method.
Background
The commonly used flow meters comprise a pore plate flow meter, an electromagnetic flow meter, a turbine flow meter, a volumetric flow meter, a float flow meter and the like, basically all the flow meters need to be arranged in a main channel of a liquid conveying pipeline, the maintenance is not convenient, and the liquid flow resistance of the main pipeline is increased.
Disclosure of Invention
The invention provides a large-range flowmeter which is not arranged in a valve body and an accurate flow adjusting method, so as to realize the flow adjusting method which can accurately adjust the flow of the valve body without influencing the liquid flow in the valve body by the flowmeter.
In order to achieve the purpose, the invention adopts the following technical scheme:
a large-range flow meter comprises a shell arranged on a liquid conveying pipeline, wherein a side channel of the liquid conveying pipeline is formed in the shell and comprises a liquid inlet channel, a measuring channel and a liquid outlet channel which are sequentially connected, wherein the liquid inlet channel is connected with the measuring channel through a channel inlet; a spring and a floater are arranged in the measuring channel, and the floater is propped against the inlet of the channel under the action of the spring; a piston valve seat and a piston rod are arranged in the liquid inlet channel, a return spring is sleeved on the piston rod, a piston is arranged on the piston rod, and in an initial state, the return spring compresses the piston rod to enable the piston to seal the piston valve seat, so that the liquid inlet channel is closed; the device also comprises an opening control mechanism for driving the piston rod to move, wherein the opening control mechanism drives the piston rod to generate at least two stroke changes from an initial state: when the piston rod moves to enable the piston to leave the piston valve seat to a first stroke, the liquid inlet channel is opened and keeps a first fixed opening degree; when the piston rod moves to enable the piston to leave the piston valve seat to a second stroke, the liquid inlet channel is opened and a second fixed opening degree is kept.
Optionally, the device further comprises a scale display device, and a first scale corresponding to the first fixed opening degree and a second scale corresponding to the second fixed opening degree are arranged on the outer side of the scale display device.
Optionally, a magnet is arranged on the float, a chute is arranged in the scale display device, a floating ball adsorbed by the magnet is arranged in the chute, and the first scale and the second scale correspond to the floating ball.
Optionally, the opening degree control mechanism includes:
the outer end of the piston rod extends out of the liquid inlet channel, the outer end of the piston rod is provided with a rotating shaft, and a pull rod is mounted on the rotating shaft; the pull rod is provided with a limiting pull piece, the limiting pull piece is rotatably installed on the rotating shaft, and the limiting pull piece is provided with a first limiting section, a second limiting section and a third limiting section, wherein the thickness of the third limiting section is greater than that of the second limiting section and greater than that of the first limiting section; when the limiting pull piece is rotated to enable the first limiting section to be positioned in the rotating shaft, the piston seals the piston valve seat under the action of the spring, and the liquid inlet channel is closed; when the limiting pull piece is rotated to enable the second limiting section to be located in the rotating shaft, the piston leaves the piston valve seat to a first stroke, the liquid inlet channel is opened, and a first fixed opening degree is kept; when the third limiting section is positioned in the rotating shaft by rotating the limiting pulling piece, the piston leaves the piston valve seat to a second stroke, the liquid inlet channel is opened, and a second fixed opening degree is kept, wherein the second fixed opening degree is larger than the first fixed opening degree.
Optionally, the opening degree control mechanism includes:
the inner end of the piston is provided with a pressure sensor, the piston rod is connected with a motor, the motor is connected with a controller, and the controller is connected with a switch and the pressure sensor; when the switch is turned on, the controller obtains water pressure information of the pressure sensor, when the water pressure information is within a first preset value interval, the motor drives the piston rod to move, the piston is enabled to leave the piston valve seat to reach a first stroke, the liquid inlet channel is opened, and a first fixed opening degree is kept; when the water pressure information is within a second preset value interval, the motor drives the piston rod to move, so that the piston leaves the piston valve seat to a second stroke, the liquid inlet channel is opened, and a second fixed opening degree is maintained, wherein the second fixed opening degree is larger than the first fixed opening degree.
The method for measuring the large-range flow of the large-range flowmeter comprises the following steps:
(1) when the flow needs to be measured, the opening control mechanism drives the piston rod to move, so that the piston is separated from the piston valve seat, when the flow of liquid in the infusion pipeline is large, the piston rod is driven to move, so that the piston is separated to a first stroke, the liquid inlet channel is opened, a first fixed opening is kept, and the liquid enters the measuring channel through the liquid inlet channel at a small flow; when the liquid flow in the liquid conveying pipeline is larger, the piston rod is driven to move, the piston is enabled to move to a second stroke, the liquid inlet channel is opened, a second fixed opening degree is kept, and the liquid in the valve body enters the measuring channel through the liquid inlet channel at a larger flow;
(2) obtaining flow data corresponding to the floater;
(3) the opening control mechanism drives the piston rod to move to an initial state, namely, the return spring compresses the piston rod to enable the piston to seal the piston valve seat, and the liquid inlet channel is closed.
The beneficial effects of the invention are:
the large-range flowmeter can provide the function of large-range flow measurement, and the opening control mechanism drives the piston rod to generate a plurality of stroke changes from the initial state, so that the flow range measured by the flowmeter can be infinite theoretically. The invention has the advantages of simple structure, sensitive index, high sensitivity and wide measurement range.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of the construction of a wide range flow meter of the present invention;
FIG. 2 is a schematic view of the structure of a scale display apparatus part of the present invention;
FIG. 3 is an enlarged view of a portion of the tie bar of the present invention;
FIG. 4 is a schematic view of the structure of the tie bar of the present invention;
fig. 5 is a schematic control flow diagram of an automated wide area flow meter according to the present invention.
Description of reference numerals:
a valve body 1; a ball valve 11; a valve stem 12; a liquid inlet channel 2; a piston valve seat 21; a piston rod 22; a rotating shaft 221; a return spring 23; a piston 24; a pull rod 25; a limit puller 251; a first restraint section 252; a second limiting section 253; a third spacing segment 254; a measurement channel 3; an inlet 31; a spring 32; a float 33; a magnet 34; a scale display device 4; a chute 41; a magnetic float ball 42; a transparent window 43; a scale 44; a liquid outlet channel 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
Example 1 manual wide range flow meter:
the present embodiment, as shown in fig. 1-4, details the specific structure and method of use of a wide range flow meter in the present invention in conjunction with a flow meter type balanced valve.
The flow meter type balance valve comprises a valve body 1, and a ball valve 11 and a valve rod 12 are installed in the valve body 1.
The balance valve comprises a large-range flow meter which comprises a shell detachably mounted on the side surface of the valve body 1. A bypass passage of the valve body is formed in the housing relative to the main passage in the valve body. The bypass channel comprises a liquid inlet channel 2, a measuring channel 3 and a liquid outlet channel 5 which are sequentially communicated, and the liquid inlet channel 2 and the liquid outlet channel 5 are both connected with the valve body 1.
Measuring channel 3 includes the passageway that is formed by the flowmeter casing in this structure, and measuring channel 3 one end is equipped with the float valve seat, and the float valve seat is equipped with entry 31 and inlet channel 2 intercommunication. A spring 32 and a floater 33 are arranged in the measuring channel 3, the floater 33 is abutted against the inlet 31 of the channel under the action of the spring 32, and a magnet 34 is arranged on the floater 33. A scale display device 4 is provided outside the flow meter housing. The scale display device 4 is provided with a chute 41, the chute 41 is provided with a magnetic floating ball 42 adsorbed by the magnet 34, the scale display device 4 is provided with a scale 44 for indicating the flow rate outside the chute 41, and the outside of the chute 41 is provided with a transparent window 43 so as to observe the position of the magnetic floating ball 42 and further read out the corresponding scale 44.
In the structure, a piston valve seat 21 and a piston rod 22 are arranged in the liquid inlet channel 2, a return spring 23 is sleeved on the piston rod 22, a piston 24 is arranged at the inner end of the piston rod 22, and a pull rod 25 is connected to the outer end of the piston rod 22, which extends out of the shell (the liquid inlet channel 2). In an initial state (normal state), the return spring 23 compresses the piston rod 22 to enable the piston 24 to seal the piston valve seat 21, the liquid inlet channel 2 is closed, and when the pull rod 25 is pulled to enable the piston rod 22 to move, the piston 24 is separated from the piston valve seat 21, and the liquid inlet channel 2 is opened. This structure is through opening inlet channel 2, can read out the flow that the flowmeter shows when flow control, and through closing inlet channel 2, flow control finishes the back, and inside spring 32 self return closes piston 24, and liquid no longer passes through the flowmeter. It should be noted that, during flow rate adjustment, the liquid in the valve body 1 flows through the main channel and the bypass channel (the liquid inlet channel 2, the measuring channel 3, and the liquid outlet channel 5) of the valve body 1 at the same time, so that the flow rate measured by the flow meter is not the actual flow rate of the liquid in the valve body 1, and it is necessary to identify the scale 44 representing the flow rate of the liquid in the valve body 1 after conversion according to experience.
As an example of the present embodiment, the outer end of the piston rod 22 is provided with a rotating shaft 221, the pull rod 25 is provided with a limiting pull member 251, and the limiting pull member 251 is rotatably mounted on the rotating shaft 221. The limiting pulling piece 251 is provided with a first limiting section 252 and a second limiting section 253, wherein the thickness of the second limiting section 253 is larger than that of the first limiting section 252; when the limiting pull piece 251 is rotated to enable the first limiting section 252 to be positioned in the rotating shaft 221, the piston 24 seals the piston valve seat 21 under the action of the spring 32, and the liquid inlet channel 2 is closed; when the second stopper 253 is located in the rotary shaft 221 by rotating the stopper drawing member 251, the piston 24 is separated from the piston valve seat 21, and the liquid inlet passage 2 is opened and maintained at a fixed opening. If the piston 24 is positioned differently, the flow into the meter will be different, and therefore the meter indications of different opening degrees will not be consistent. If the piston rod 22 cannot be positioned: (1) in the same flow measurement process, it is difficult to always protect the same opening, and at the same time, due to the existence of the return spring 23, it is also difficult to maintain the maximum opening; (2) in the flow measurement process of different times, it is more difficult to keep the opening degrees of the two times consistent.
In addition, as the second example of the present embodiment, since the liquid in the valve body 1 enters the flow meter through the bypass channel, the liquid entering the measuring channel 3 is less, so the spring 32 and the float 33 need to be set to be more sensitive, and the smaller flow rate change causes the larger moving distance of the float 33, thereby increasing the sensitivity of the float 33. However, the large sensitivity and the large measuring range are conflicting because of the limited travel of the float 33. To overcome this technical problem, the present example adopts the following structure:
as shown in fig. 4, the outer end of the piston rod 22 is provided with a rotating shaft 221, the pull rod 25 is provided with a limiting pull member 251, the limiting pull member 251 is rotatably mounted on the rotating shaft 221, the limiting pull member 251 is provided with a first limiting section 252, a second limiting section 253 and a third limiting section 254, wherein the thickness of the third limiting section 254 is greater than the thickness of the second limiting section 253 than the thickness of the first limiting section 252. When the limiting pull piece 251 is rotated to enable the first limiting section 252 to be positioned in the rotating shaft 221, the piston 24 seals the piston valve seat 21 under the action of the spring 32, and the liquid inlet channel 2 is closed; when the limiting pull piece 251 is rotated to enable the second limiting section 253 to be positioned in the rotating shaft 221, the piston 24 leaves the piston valve seat 21 to a first stroke, the liquid inlet channel 2 is opened, and a first fixed opening degree is kept; when the third stopper section 254 is positioned in the rotary shaft 221 by rotating the stopper drawing member 251, the piston 24 leaves the piston valve seat 21 to a second stroke, the liquid inlet passage 2 is opened, and a second fixed opening degree is maintained, wherein the second fixed opening degree is greater than the first fixed opening degree. A first scale 44 corresponding to the first fixed opening degree and a second scale 44 corresponding to the second fixed opening degree are provided outside the slide groove 41.
With the above structure, in this example, when the liquid flow rate of the valve body 1 is large (expressed as a high flow rate), the first fixed opening degree makes the liquid flow rate entering the measurement passage 3 small, and therefore the flow meter indicates a corresponding measurement result in the case of a small flow rate and a high flow rate. Conversely, when the liquid flow rate of the valve body 1 is small (representing a low flow rate), the second fixed opening degree makes the liquid flow rate entering the measuring channel 3 large, so that the flow meter indicates a corresponding measurement result under the conditions of large flow rate and low flow rate. If the flow of the valve body 1 is 1-10, the pull rod 25 is adjusted to the second fixed opening degree, the measuring range of the flowmeter is 1-10, and if the flow of the valve body 1 is 11-20, the flow is adjusted to the first fixed opening degree, and the measuring range of the flowmeter is 11-20.
The flow rate adjusting method of the flow meter type balance valve of the embodiment comprises the following steps:
(1) the pull rod 25 is adjusted to ensure that the liquid in the valve body 1 enters the measuring channel 3 through the liquid inlet channel 2 and returns to the valve body 1 through the liquid outlet channel 5;
(2) the float 33 moves under the dual action of the liquid and the spring 32, the magnetic floating ball 42 in the chute 41 moves under the action of the magnet 34 in the float 33, and the flow is indicated by the scale 44;
(3) keeping the state of the step (1), adjusting the valve rod 12 to adjust the opening degree of the ball valve 11, so that the liquid flow in the valve body 1 is changed, the flow of the liquid flowing into the measuring channel 3 is also changed, and the moving position of the magnetic floating ball 42 is also changed;
(4) when the floating ball moves to the flow scale 44 needing to be balanced, the valve rod 12 is stopped to be adjusted, and the flow adjustment is finished;
(5) after the flow adjustment is completed, the pull rod 25 is adjusted to the initial state.
The flow rate adjusting method of the flow meter type balance valve in the first embodiment is the same as the above steps except that the step (1) is replaced by:
(1) the limiting pull piece 251 is rotated to enable the second limiting section 253 to be positioned in the rotating shaft 221, the piston 24 leaves the piston valve seat 21, the liquid inlet channel 2 is opened and keeps a fixed opening degree, and liquid in the valve body 1 enters the measuring channel 3 through the liquid inlet channel 2 and returns to the valve body 1 through the liquid outlet channel 5;
replacing the step (5) with:
(5) after the flow rate is adjusted, the limiting pulling member 251 is rotated to make the first limiting section 252 located in the rotating shaft 221, the piston 24 seals the piston valve seat 21 under the action of the spring 32, and the liquid inlet channel 2 is closed.
The flow rate adjusting method of the flow meter type balance valve of the second embodiment is the same as the above steps except that the step (1) is replaced by:
(1) when the liquid flow in the valve body 1 is large:
the limiting pull piece 251 is rotated to enable the second limiting section 253 to be positioned in the rotating shaft 221, the piston 24 leaves the piston valve seat 21 to a first stroke, the liquid inlet channel 2 is opened and keeps a first fixed opening degree, and liquid in the valve body 1 enters the measuring channel 3 through the liquid inlet channel 2 at a smaller flow rate and returns to the valve body 1 through the liquid outlet channel 5;
when the liquid flow in the valve body 1 is small:
the third limiting section 254 is positioned in the rotating shaft 221 by rotating the limiting pull piece 251, the piston 24 leaves the piston valve seat 21 to a second stroke, the liquid inlet channel 2 is opened and keeps a second fixed opening degree, and the liquid in the valve body 1 enters the measuring channel 3 through the liquid inlet channel 2 at a larger flow rate and returns to the valve body 1 through the liquid outlet channel 5;
replacing the step (5) with:
(5) after the flow rate is adjusted, the limiting pulling member 251 is rotated to make the first limiting section 252 located in the rotating shaft 221, the piston 24 seals the piston valve seat 21 under the action of the spring 32, and the liquid inlet channel 2 is closed.
EXAMPLE 2 automatic type Wide area flowmeter
The automatic large-range flowmeter of the embodiment has the same structures as the manual large-range flowmeter, such as a liquid inlet channel, a measuring channel, a liquid outlet channel and the like.
The difference lies in an opening degree control mechanism comprising:
as shown in fig. 5, a pressure sensor is arranged at the inner end of the piston, the piston rod is connected with a motor, the motor is connected with a controller, and the controller is connected with a switch and the pressure sensor; when the switch is turned on, the controller obtains water pressure information of the pressure sensor, when the water pressure information is within a first preset value interval, the motor drives the piston rod to move, the piston is enabled to leave the piston valve seat to reach a first stroke, the liquid inlet channel is opened, and a first fixed opening degree is kept; when the water pressure information is within a second preset value interval, the motor drives the piston rod to move, so that the piston leaves the piston valve seat to a second stroke, the liquid inlet channel is opened, and a second fixed opening degree is maintained, wherein the second fixed opening degree is larger than the first fixed opening degree.
Meanwhile, the water pressure information can be set into a plurality of preset value intervals, and if a third preset value is distinguished and corresponds to a third fixed opening degree, the rest can be done in the same way.
The flowmeter can also be provided with a control panel for adjusting the numerical values of the first preset value interval and the second preset value interval.
The automatic large-range flow meter of the embodiment can automatically judge the liquid flow according to the water pressure information obtained by the pressure sensor, and automatically drive the piston rod to move, so that the proper opening degree is reached, and the corresponding opening degree can be automatically obtained no matter how the flow rate in the infusion pipeline is.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (4)
1. A large-range flowmeter is characterized by comprising a shell arranged on a liquid conveying pipeline, wherein a side channel of the liquid conveying pipeline is formed in the shell and comprises a liquid inlet channel, a measuring channel and a liquid outlet channel which are sequentially connected, wherein the liquid inlet channel is connected with the measuring channel through a channel inlet;
a spring and a floater are arranged in the measuring channel, and the floater is propped against the inlet of the channel under the action of the spring;
a piston valve seat and a piston rod are arranged in the liquid inlet channel, a return spring is sleeved on the piston rod, a piston is arranged on the piston rod, and in an initial state, the return spring compresses the piston rod to enable the piston to seal the piston valve seat, so that the liquid inlet channel is closed;
the device also comprises an opening control mechanism for driving the piston rod to move, wherein the opening control mechanism drives the piston rod to generate at least two stroke changes from an initial state:
the opening degree control mechanism includes:
a rotating shaft is arranged at the outer end of the piston rod, which extends out of the liquid inlet channel, and a pull rod is arranged on the rotating shaft; the pull rod is provided with a limiting pull piece, the limiting pull piece is rotatably installed on the rotating shaft, and the limiting pull piece is provided with a first limiting section, a second limiting section and a third limiting section, wherein the thickness of the third limiting section is greater than that of the second limiting section and greater than that of the first limiting section; when the limiting pull piece is rotated to enable the first limiting section to be positioned in the rotating shaft, the piston seals the piston valve seat under the action of the spring, and the liquid inlet channel is closed; when the limiting pull piece is rotated to enable the second limiting section to be located in the rotating shaft, the piston rod moves to enable the piston to leave the piston valve seat to a first stroke, the liquid inlet channel is opened, and a first fixed opening degree is kept; when the third limiting section is positioned in the rotating shaft by rotating the limiting pulling piece, the piston rod moves to enable the piston to leave the piston valve seat to a second stroke, the liquid inlet channel is opened, and a second fixed opening degree is kept; wherein the second fixed opening is greater than the first fixed opening.
2. The wide range flowmeter of claim 1, further comprising a scale display, wherein the scale display is provided with a first scale corresponding to the first fixed opening and a second scale corresponding to the second fixed opening on the outside.
3. The wide-range flow meter according to claim 2, wherein the float is provided with a magnet, the scale display device is provided with a chute, the chute is provided with a floating ball attracted by the magnet, and the first scale and the second scale correspond to the floating ball.
4. The wide range flow measurement method of a wide range flow meter according to any of claims 1 to 3, characterized by the steps of:
(1) when the flow needs to be measured, the opening control mechanism drives the piston rod to move, so that the piston is separated from the piston valve seat, when the flow of liquid in the infusion pipeline is larger, the piston rod is driven to move, so that the piston is separated to a first stroke, the liquid inlet channel is opened,
and keeping a first fixed opening, and allowing the liquid to enter the measuring channel through the liquid inlet channel at a smaller flow rate; when the liquid flow in the liquid conveying pipeline is larger, the piston rod is driven to move, the piston is enabled to move to a second stroke, the liquid inlet channel is opened, a second fixed opening degree is kept, and the liquid in the valve body enters the measuring channel through the liquid inlet channel at a larger flow;
(2) obtaining flow data corresponding to the floater;
(3) the opening control mechanism drives the piston rod to move to an initial state, namely, the return spring compresses the piston rod to enable the piston to seal the piston valve seat, and the liquid inlet channel is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727939.3A CN111693100B (en) | 2020-07-27 | 2020-07-27 | Large-range flowmeter and large-range flow measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727939.3A CN111693100B (en) | 2020-07-27 | 2020-07-27 | Large-range flowmeter and large-range flow measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111693100A CN111693100A (en) | 2020-09-22 |
| CN111693100B true CN111693100B (en) | 2022-07-08 |
Family
ID=72486945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010727939.3A Active CN111693100B (en) | 2020-07-27 | 2020-07-27 | Large-range flowmeter and large-range flow measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111693100B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847960B (en) * | 2021-09-15 | 2022-09-06 | 安徽金大仪器有限公司 | Wide-measurement-range composite flowmeter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203249649U (en) * | 2013-04-26 | 2013-10-23 | 珠海爱迪生节能科技有限公司 | Fluid flowmeter |
| CN104061973A (en) * | 2013-03-18 | 2014-09-24 | 北京堀场汇博隆精密仪器有限公司 | Flowmeter |
| CN204201258U (en) * | 2014-10-14 | 2015-03-11 | 宁波埃美柯铜阀门有限公司 | Flowmeter type quiescent flow equilibrium valve |
| CN205592411U (en) * | 2016-01-07 | 2016-09-21 | 佛山市云米电器科技有限公司 | Multi -functional discharge electric adjusting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7395708B2 (en) * | 2006-04-28 | 2008-07-08 | Skoflo Industries, Inc. | Flow measuring apparatus including a piston movable in the flow barrel |
-
2020
- 2020-07-27 CN CN202010727939.3A patent/CN111693100B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061973A (en) * | 2013-03-18 | 2014-09-24 | 北京堀场汇博隆精密仪器有限公司 | Flowmeter |
| CN203249649U (en) * | 2013-04-26 | 2013-10-23 | 珠海爱迪生节能科技有限公司 | Fluid flowmeter |
| CN204201258U (en) * | 2014-10-14 | 2015-03-11 | 宁波埃美柯铜阀门有限公司 | Flowmeter type quiescent flow equilibrium valve |
| CN205592411U (en) * | 2016-01-07 | 2016-09-21 | 佛山市云米电器科技有限公司 | Multi -functional discharge electric adjusting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111693100A (en) | 2020-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8365753B2 (en) | Fluid flow controller | |
| US20140345516A1 (en) | Mass velocity sensor device and method for remote monitoring and visual verification of fluid velocity | |
| CN204922194U (en) | Manual gate valve switching position detecting device based on rotatory number of turns | |
| EP0656527B1 (en) | Compound flow meter and leak detector system with a valve that is shut under abnormal flow conditions | |
| CN111693100B (en) | Large-range flowmeter and large-range flow measuring method | |
| CN102549326A (en) | Speed control drive section with failsafe valve | |
| CN111853339B (en) | Flowmeter type balance valve and flow adjusting method thereof | |
| US9506801B2 (en) | Piston prover | |
| CN109027284B (en) | Flow linear regulating valve controlled by PLC (programmable logic controller) by utilizing inlet incoming flow parameters | |
| CN109085111A (en) | A kind of active dual Piston ventilation rate master bar calibrating installation and its calibration method | |
| CN111853338B (en) | Flowmeter type self-adjusting balance valve and flow self-adjusting method thereof | |
| US4100799A (en) | Compound meter assembly | |
| CN216385818U (en) | Flowmeter with pipe diameter detection function | |
| CN111795816B (en) | Flow characteristic measuring device and method for control valve sleeve | |
| JPS60168974A (en) | Flow-rate control valve | |
| CN116026579A (en) | On-line self-diagnosis method for faults of flow measurement and control valve | |
| JPH034848B2 (en) | ||
| CN208635996U (en) | A kind of hydraulic experiment device accurately controlling fluidised form | |
| US1975710A (en) | Flow indicator | |
| CN215763604U (en) | Valve for hydraulic engineering with flow detection function | |
| CN212179971U (en) | Control system for stably metering and correcting flow | |
| CN219301696U (en) | Measuring device of high-precision differential pressure flowmeter | |
| CN204007806U (en) | Mechanical meters flow verification system | |
| CN210178961U (en) | Flow regulating valve | |
| CN214621326U (en) | Meter-valve integrated flow monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |