CN212158698U - Elbow flowmeter measuring device capable of isolating flushing - Google Patents
Elbow flowmeter measuring device capable of isolating flushing Download PDFInfo
- Publication number
- CN212158698U CN212158698U CN202020876482.8U CN202020876482U CN212158698U CN 212158698 U CN212158698 U CN 212158698U CN 202020876482 U CN202020876482 U CN 202020876482U CN 212158698 U CN212158698 U CN 212158698U
- Authority
- CN
- China
- Prior art keywords
- pipe
- flushing
- pressure guide
- guide pipe
- valve
- 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
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses a can keep apart return bend flowmeter measuring device who washes, including return bend sensor and differential pressure transmitter the return bend sensor inboard is equipped with first interface, and first interface links to each other with first survey pipeline, and first survey pipeline links to each other with first connecting pipe one end through first shut-off valve, and the first connecting pipe other end links to each other with differential pressure transmitter, and first connecting pipe still with first blow-off pipe tee junction, first connecting pipe is first tee bend point with first blow-off pipe tee junction, and first connecting pipe still with first flushing pipe tee junction, first connecting pipe and first flushing pipe tee junction are between first shut-off valve and first tee bend point, and first flushing pipe links to each other through first flushing valve and first isolation flushing pump export. The elbow flowmeter measuring device capable of being isolated and washed is suitable for measuring the flow of an elbow flowmeter with corrosive, high-viscosity, crystalline, melting, precipitability and other media in a pipeline, and is simple in structure, good in controllability and high in measuring accuracy.
Description
Technical Field
The utility model relates to a fluid flow monitoring device specifically relates to a return bend flowmeter measuring device that can keep apart and wash.
Background
The elbow flowmeter measures the flow rate of medium in the pipeline by measuring the differential pressure value generated by the positive and negative pressure sides of the elbow sensor through the differential pressure transmitter, when the elbow flowmeter is used for measuring the flow rate of conventional medium (such as water, steam, air, etc.), the positive and negative pressure sides of the differential pressure transmitter are connected with the pressure taking point of the positive and negative pressure sides of the elbow sensor through the pressure guide pipe, the pressure guide pipe is filled with the measured medium in the pipeline, the measured medium is directly guided to realize the accurate and reliable measurement of the differential pressure value, and the medium in the pressure guide pipe cannot generate the problems of chemical reaction, solidification, blockage, etc. When the elbow flowmeter is applied to flow measurement of media with corrosivity, high viscosity, crystallinity, fusibility, precipitability and the like in a pipeline, if a pressure guide pipe of a differential pressure transmitter adopts direct pressure guide of the measured media in the pipeline, problems of chemical reaction, solidification, blockage and the like can be caused, so that accurate and reliable measurement of a differential pressure value cannot be realized, and measurement of the medium flow in the pipeline is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can keep apart return bend flowmeter measuring device who washes, this can keep apart return bend flowmeter measuring device who washes be medium such as corrosivity, high viscosity, crystallinity, fusibility, precipitability in being applicable to the pipeline, and allow the return bend flowmeter flow measurement of mixing trace flush fluid in the measured medium on the technology, simple structure, the controllability is good, and measurement accuracy is high.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a bent pipe flowmeter measuring device capable of being washed in an isolated mode comprises a bent pipe sensor and a differential pressure transmitter, wherein a first interface is arranged on the inner side of the bent pipe sensor, a second interface is arranged on the outer side of the bent pipe sensor, the first interface is connected with a first measuring pipeline, the first measuring pipeline is connected with one end of a first pressure guide pipe through a first shutoff valve, the other end of the first pressure guide pipe is connected with the differential pressure transmitter, the first pressure guide pipe is further connected with a first drain pipe in a tee mode, the connection point of the first pressure guide pipe and the first drain pipe is arranged between the first shutoff valve and the differential pressure transmitter, the connection point of the first pressure guide pipe and the first drain pipe is a first tee joint point, the first drain pipe is provided with a first drain valve, the second interface is connected with a second measuring pipeline, the second measuring pipeline is connected with one end of a second pressure guide pipe through a second shutoff valve, the other end of the second pressure guide pipe is connected with the differential pressure transmitter, and the second pressure, the three-way connection point of the second pressure guide pipe and the second blow-off pipe is arranged between the second shutoff valve and the differential pressure transmitter, the three-way connection point of the second pressure guide pipe and the second blow-off pipe is a second three-way point, the second blow-off pipe is provided with a second blow-off valve, the differential pressure transmitter further comprises a first isolation flushing pump and a second isolation flushing pump, the first pressure guide pipe is further connected with a first flushing pipe in a three-way manner, the three-way connection point of the first pressure guide pipe and the first flushing pipe is arranged between the first shutoff valve and the first three-way point, the first flushing pipe is connected with the outlet of the first isolation flushing pump through a first flushing valve, the inlet of the first isolation flushing pump is connected with a first flushing liquid source through a first connecting pipe, the second pressure guide pipe is further connected with the second flushing pipe in a three-way manner, the three-way connection point of the second pressure guide pipe and the second flushing pipe is arranged between the second shutoff valve and the second three-way point, the second flushing, and the inlet of the second isolation flushing pump is connected with a second flushing liquid source through a second connecting pipe.
Preferably, the connection point of the first pressure guide pipe and the first flushing pipe is close to the first shutoff valve, and the connection point of the second pressure guide pipe and the second flushing pipe is close to the second shutoff valve.
Preferably, the first rinsing liquid source and the second rinsing liquid source are the same rinsing liquid source.
Preferably, the first three-way point and the second three-way point are both on the side close to the differential pressure transmitter.
Preferably, one end of the second connecting pipe is connected with the first connecting pipe tee.
Preferably, the first isolation flushing pump and the second isolation flushing pump are plunger metering pumps.
Further preferably, the first shut-off valve and the second shut-off valve are both three-way valves.
In the technical scheme, a pair of positive and negative pressure side pressure taking points are formed by a first interface and a second interface on the inner side and the outer side of a bent pipe sensor, a corresponding interface on the positive and negative pressure side is connected with a side pressure guide pipe through a side measuring pipeline and a shutoff valve, the corresponding side pressure guide pipe is connected with a corresponding side flushing pipe through a tee joint, so that flushing fluid is continuously, stably and quantitatively injected into the corresponding pressure guide pipe by using a corresponding side plunger metering pump, flushing fluid is filled in each side pressure guide pipe and a differential pressure transmitter, the flushing fluid injected into the corresponding side pressure guide pipe through each side flushing pipe enters the corresponding side measuring pipeline through the corresponding side shutoff valve and finally flows into the bent pipe sensor through the side interface, the continuous, stable and quantitative flushing fluid passes through each side interface through the corresponding side interface, the measuring pipeline and the shutoff valve by adjusting each side plunger metering pump, and the continuous flushing is performed on each side interface, the measuring pipeline and the shutoff valve, the device avoids blockage, and because the flow velocity of the flushing liquid at the interface of each side is small enough, the flushing liquid does not chemically react with the measured medium to pollute the measured medium, and the fluidity is good, thereby realizing accurate and reliable measurement of the medium flow in the pipeline under the condition of not influencing the differential pressure value generated by the elbow sensor.
Drawings
FIG. 1 is a schematic view of an isolation flushable elbow flowmeter measurement device of the present invention;
fig. 2 shows the effect of the flushing flow rate on the flow coefficient.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
a bent pipe flowmeter measuring device capable of being isolated and washed comprises a bent pipe sensor 10 and a differential pressure transmitter 20, wherein a first interface 31 is arranged on a bus on the inner side of the bent pipe sensor 10, a second interface 51 is arranged on a bus on the outer side, the first interface 31 is connected with a first measuring pipeline 32, the first measuring pipeline 32 is connected with one end of a first pressure guide pipe 34 through a first shutoff valve 33, the other end of the first pressure guide pipe 34 is connected with the differential pressure transmitter 20, the side, close to the differential pressure transmitter 20, of the first pressure guide pipe 34 is in three-way connection with a first drain pipe 35, fluid or impurities in the first pressure guide pipe 34 can be conveniently discharged through the first drain valve 36 on the first drain pipe 35, the three-way connection point of the first pressure guide pipe 34 and the first drain pipe 35 is a first three-way point 305, the side, close to the first shutoff valve 33, of the first pressure guide pipe 34 is in three-way connection with the first washing pipe 40, the three-way connection point of the first pressure guide pipe 34 and the first washing pipe 40 is arranged between the first shutoff, the first flushing pipe 40 is connected with the outlet 42 of the first isolation flushing pump through the first flushing valve 41, the inlet 44 of the first isolation flushing pump is connected with the first flushing liquid source 46 through the first connecting pipe 45, in this way, the first isolation flushing pump 43 is started, flushing liquid in the first flushing liquid source 46 is sent into the first flushing pipe 40 through the first isolation flushing pump 43 and further sent into the first pressure guide pipe 34, the side, close to the differential pressure transmitter 20, of the first pressure guide pipe 34 is filled with the flushing liquid, the flushing liquid entering the first pressure guide pipe 34 from the first flushing pipe 40 can only enter the first measuring pipeline 32 on the corresponding side from the first shutoff valve 33, the first interface 31 is flushed, and blockage is avoided.
Similarly, the second interface 51 is connected with the second measuring pipeline 52, the second measuring pipeline 52 is connected with one end of the second pressure guiding pipe 54 through the second shut-off valve 53, the first shut-off valve 33 and the second shut-off valve 53 are all three-way valves, so that even if the first interface 31, the first measuring pipeline 32, the first shut-off valve 33, the first interface 51, the second measuring pipeline 52 and the second shut-off valve 53 are blocked, the other end of the second pressure guiding pipe 54 is connected with the differential pressure transmitter 20, the side of the second pressure guiding pipe 54 close to the differential pressure transmitter 20 is three-way connected with the second drainage pipe 55, the fluid or impurities in the second pressure guiding pipe 54 can be conveniently discharged through the second drainage valve 56 on the second drainage pipe 55, the three-way connection point of the second pressure guiding pipe 54 and the second drainage pipe 55 is the second three-way point 505, the side of the second pressure guiding pipe 54 close to the second shut-off valve 53 is connected with the second flushing pipe 60, in order to further simplify the measurement device of the elbow flowmeter capable of performing isolated flushing, a three-way connection point of the second pressure guide pipe 54 and the second flushing pipe 60 is between the second shutoff valve 53 and the second three-way point 505, the second flushing pipe 60 is connected with a second isolated flushing pump outlet 62 through the second flushing valve 61, and a second isolated flushing pump inlet 64 is connected with a second flushing liquid source 66 through a second connecting pipe 65, in one embodiment, the first flushing liquid source 46 and the second flushing liquid source 66 are the same flushing liquid source, the first flushing liquid source 46 can be respectively connected with the first connecting pipe 45 and the second connecting pipe 65, one end of the second connecting pipe 65 can be connected with the first connecting pipe 45 in a three-way manner, the second connecting pipe 65 can send flushing liquid in the first flushing liquid source 46 into the second isolated flushing pump 63 and the second flushing pipe 60 through the first connecting pipe 45, and similarly, the second isolated flushing pump 63 is started, the flushing liquid in the first flushing liquid source 46 is sent into the second flushing pipe 60 by the second isolation flushing pump 63, further sent into the second pressure guiding pipe 54, and then sent into the second measuring pipeline 52 on the corresponding side from the second shutoff valve 53 to flush the second interface 51.
Like this, be media such as corrosivity, high viscosity, crystallinity, fusibility, precipitability in the pipeline, and under the condition of the micro-flush fluid of incorporation in the medium of permitting in the technology, the measured medium in the pipeline can not get into both sides pressure pipe, but replace measured medium pressure pipe with the flush fluid, the chemical reaction that has avoided probably producing like this, solidify, jam scheduling problem, plunger metering pump is all selected for use to first isolation flushing pump 43 and second isolation flushing pump 63, plunger metering pump output pressure is high, the controllability is good, can be with the continuous, stable, the quantitative flush fluid of first flush fluid source 46 send into in the corresponding side flushing pipe.
The flushing fluid should meet the following requirements:
1) does not react with the measured medium; 2) the test medium is clean, does not contain solid particles and does not pollute the tested medium; 3) no corrosion; 4) the fluidity is good; 5) is economical and easy to obtain, and can keep continuous and stable supply without being influenced by the process and the external environment.
After the flushing liquid meets the above conditions, the flow rate of the flushing liquid entering the first measuring pipeline 32 from the first pressure guiding pipe 34 and the flow rate of the flushing liquid entering the second measuring pipeline 52 from the second pressure guiding pipe 54 are critical, and the flushing flow rates in the pressure guiding pipes on both sides must be controlled within a certain range and kept to be continuously, stably and quantitatively controlled. The washing flow velocity is too low, so that the washing effect cannot be achieved, and the measured medium enters pressure guide pipes at two sides to cause the problems of chemical reaction, solidification, blockage and the like; when the flushing flow rate is too high, an additional differential pressure is generated in the pressure guiding pipes on the two sides, so that the differential pressure measurement is influenced, and the flow measurement is influenced.
To further determine the effect of the flushing flow rate on the measurement system, a correlation test was performed and the data is shown in fig. 2, where the flow coefficient reflects the deviation of the flow measurement accuracy of the measurement device of the elbow flowmeter that can isolate the flushing, the flow coefficient deviation reflects the flow deviation, and the effect of the flushing flow rate on the flow coefficient and the flow coefficient deviation reflects the effect of the flushing flow rate on the measurement system. The test result shows that the flushing flow rate of the medium to be tested is changed under the condition of different flow rates, and the flow coefficient and the deviation of the flow coefficient are correspondingly changed compared with the condition of no flushing.
Adjusting the output flow of a plunger metering pump, changing the flushing flow rate, wherein when the flushing flow rate is 6cm/s, the deviation of the flow coefficient is 1.52 percent, the deviation is positive deviation, and the flushing flow rate is not suitable for a tested system with higher requirement on measurement accuracy; when the flushing flow rate is 4cm/s, the deviation of the flow coefficient is 0.626 percent, and the deviation is positive deviation, so that the metering of the elbow flowmeter is basically not influenced; when the flushing flow rate is 2cm/s, the flow coefficient deviation is 0.4 percent, and the flow coefficient deviation is positive deviation, so that the metering influence on the elbow flowmeter is smaller; when the flushing flow speed is 1cm/s, the flow coefficient deviation is 0.287 percent, the metering of the elbow flowmeter is slightly influenced, and the problems of solidification, blockage and the like are not found in the test process; when the flushing flow rate is 0.8cm/s, when a high-viscosity medium experiment is carried out, once solidification and blockage occur in the test process, so that the flushing flow rate of 1cm/s-2cm/s is recommended to be selected in practical application, and the flow measurement precision deviation of the elbow flowmeter measuring device capable of isolating flushing is ensured to be within 0.4%.
In the technical scheme, the plunger metering pump at the corresponding side is started firstly, flushing liquid is injected into the pressure guide pipe at the corresponding side through the flushing pipe at the corresponding side, the blow-off valve at the corresponding side is opened, after impurities and other fluids in the pressure guide pipe are discharged completely through the blow-off pipe and the blow-off valve, closing the corresponding side blow-down valve to make the side pressure pipe filled with flushing liquid to replace the medium to be measured, meanwhile, the flushing liquid injected into the pressure conduction pipe at the corresponding side enters the measuring pipeline at the corresponding side through the shutoff valve at the corresponding side and finally flows into the elbow sensor through the side interface, by adjusting the plunger metering pump on each side, the flushing liquid can continuously, stably and quantitatively flow through the interface on each side, the shutoff valve, the measuring pipeline and the interface on each side are continuously washed, so that the problems of chemical reaction, solidification or blockage and the like caused by the fact that the measured medium enters the pressure guide pipes on the two sides are avoided, and the reliable measurement of the medium flow in the pipeline is realized.
The embodiment is only for the illustration of the concept and implementation of the present invention, and is not limited thereto, and the technical solution without substantial transformation is still within the protection scope under the concept of the present invention.
Claims (7)
1. A bent pipe flowmeter measuring device capable of being washed in an isolated mode comprises a bent pipe sensor and a differential pressure transmitter, wherein a first interface is arranged on the inner side of the bent pipe sensor, a second interface is arranged on the outer side of the bent pipe sensor, the first interface is connected with a first measuring pipeline, the first measuring pipeline is connected with one end of a first pressure guide pipe through a first shutoff valve, the other end of the first pressure guide pipe is connected with the differential pressure transmitter, the first pressure guide pipe is further connected with a first drain pipe in a tee mode, the connection point of the first pressure guide pipe and the first drain pipe is arranged between the first shutoff valve and the differential pressure transmitter, the connection point of the first pressure guide pipe and the first drain pipe is a first tee joint point, the first drain pipe is provided with a first drain valve, the second interface is connected with a second measuring pipeline, the second measuring pipeline is connected with one end of a second pressure guide pipe through a second shutoff valve, the other end of the second pressure guide pipe is connected with the differential pressure transmitter, and the second pressure, the three-way connection point of the second pressure guide pipe and the second blow-off pipe is arranged between the second shutoff valve and the differential pressure transmitter, the three-way connection point of the second pressure guide pipe and the second blow-off pipe is a second three-way point, and the second blow-off pipe is provided with a second blow-off valve, and the differential pressure transmitter is characterized by further comprising a first isolation flushing pump and a second isolation flushing pump, wherein the first pressure guide pipe is further connected with the first flushing pipe in a three-way manner, the three-way connection point of the first pressure guide pipe and the first flushing pipe is arranged between the first shutoff valve and the first three-way point, the first flushing pipe is connected with the outlet of the first isolation flushing pump through the first flushing valve, the inlet of the first isolation flushing pump is connected with the first flushing liquid source through the first connecting pipe, the second pressure guide pipe is further connected with the second flushing pipe in a three-way manner, the three-way connection point of the second pressure guide pipe and the second flushing pipe is arranged between the second shutoff valve and the second three-way point, and the, and the inlet of the second isolation flushing pump is connected with a second flushing liquid source through a second connecting pipe.
2. The isolatable flush elbow meter measurement device of claim 1, wherein the first impulse pipe to first flush pipe tee connection is on a side proximate the first shut-off valve and the second impulse pipe to second flush pipe tee connection is on a side proximate the second shut-off valve.
3. An isolatable flush elbow meter measurement device according to claim 1 or claim 2 wherein the first and second flush fluid sources are the same flush fluid source.
4. The isolatable washdown elbow meter measurement device of claim 1, wherein the first and second tee points are on a side proximate the differential pressure transmitter.
5. The isolatable flush elbow meter measurement device of claim 1 wherein the second connector is tee connected at one end to the first connector.
6. An isolatable flush elbow meter measurement device according to claim 1 wherein the first and second isolation flush pumps are plunger metering pumps.
7. An isolatable flush elbow meter measurement device according to claim 1 wherein the first and second shut-off valves are three-way valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020876482.8U CN212158698U (en) | 2020-05-22 | 2020-05-22 | Elbow flowmeter measuring device capable of isolating flushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020876482.8U CN212158698U (en) | 2020-05-22 | 2020-05-22 | Elbow flowmeter measuring device capable of isolating flushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212158698U true CN212158698U (en) | 2020-12-15 |
Family
ID=73706961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020876482.8U Active CN212158698U (en) | 2020-05-22 | 2020-05-22 | Elbow flowmeter measuring device capable of isolating flushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212158698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116164800A (en) * | 2023-04-26 | 2023-05-26 | 河北唐仪自控设备有限公司 | Integrated bidirectional measurement elbow flowmeter |
-
2020
- 2020-05-22 CN CN202020876482.8U patent/CN212158698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116164800A (en) * | 2023-04-26 | 2023-05-26 | 河北唐仪自控设备有限公司 | Integrated bidirectional measurement elbow flowmeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203811492U (en) | Closed type pipeline cycle erosion test device | |
| CN103822839B (en) | A kind of closed conduit circulation erosion test device and using method | |
| CN212158698U (en) | Elbow flowmeter measuring device capable of isolating flushing | |
| CN207261003U (en) | A kind of drilling well outlet flow measurement device | |
| CN204330091U (en) | Bell jar type gas flowmeter calibrating installation | |
| CN112050867A (en) | Elbow flowmeter measuring device capable of isolating flushing | |
| CN101251397A (en) | By-pass type pipeline flowmeter | |
| CN202539112U (en) | Automatic cleaning device of ore pulp fluid density measurement sensor | |
| CN212061891U (en) | Waste resin flushing system of nuclear power station | |
| CN102121854B (en) | V-shaped flow tube for ultrasonic heat meter | |
| CN211013342U (en) | Dirt removing device for diaphragm type pressure transmitter | |
| CN209102162U (en) | A kind of multiple flow passages ultrasonic wave gas meter | |
| CN201507434U (en) | Laboratory water purifier water purification pump testing device | |
| CN203961951U (en) | Oil extraction metering device | |
| CN209918496U (en) | Quick cleaning device of pressure transmitter connecting pipe | |
| CN113899871A (en) | Liquid path system of water quality online monitoring and quality control instrument and use method thereof | |
| CN220590308U (en) | Grinding aid ration adds device | |
| CN113502877A (en) | Tail end water discharging control device for municipal pipeline | |
| CN101672671A (en) | Z-shaped pipe section for energy transducers of ultrasonic flowmeters and calorimeters | |
| CN112179429A (en) | Liquid flow detection device | |
| CN201503287U (en) | Z-shaped pipe section for transducers of ultrasonic flowmeter and ultrasonic heat meter | |
| CN102641864A (en) | Automatic cleaning device of sensor for measuring ore pulp fluid density | |
| CN212031425U (en) | Online PH meter measurement system of desulphurization unit | |
| CN203414119U (en) | Wedge type flow meter with washing mechanism | |
| CN104338707A (en) | Automatic cleaning device for liquid flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |