CN105300459B - Automatically cleaning flow detector - Google Patents
Automatically cleaning flow detector Download PDFInfo
- Publication number
- CN105300459B CN105300459B CN201510848861.XA CN201510848861A CN105300459B CN 105300459 B CN105300459 B CN 105300459B CN 201510848861 A CN201510848861 A CN 201510848861A CN 105300459 B CN105300459 B CN 105300459B
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve
- purging
- pipeline
- way magnetic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measuring Fluid Pressure (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses automatically cleaning flow detectors, including flow detector and pressure blow device, flow detector includes flow accumulation purging controller, differential pressure transmitter, pressure transmitter, temperature sensor, and pressure blow device includes gas filtration pressure reducing valve, electromagnet cut off valve, solenoid directional control valve, pressure pipeline, three valve groups；The flow accumulation purging controller is electrically connected by signal wire with differential pressure transmitter, pressure transmitter, temperature sensor, electromagnet cut off valve, solenoid directional control valve, pressure pipeline includes differential pressure high pressure pressure pipeline, differential pressure low pressure pressure pipeline, pressure pressure pipeline, the entrance of gas filtration pressure reducing valve connects purging feed channel, the pressure of purge gass, which is higher than, is measured pipeline pressure, flow accumulation purges the state that controller controls electromagnet cut off valve, solenoid directional control valve by electric signal, realizes the switching of blowing pipeline and pressure state.Structure of the invention is compact, high certainty of measurement, damage caused by avoiding purge gass from sealing in transmitter.
Description
Technical field
The present invention relates to pipeline flow detection device technical field, especially a kind of automatically cleaning flow detector.
Background technology
Differential flow measurement is common flow-measuring method, it is flowed in pipeline using gas or liquid and other medium
When pass through throttling set or particular conduit when form differential pressure, which is measured by differential pressure transmitter to detect the stream for flowing through pipeline
The flow of body, due to medium density different pressure and temperature conditions be variation, in order to accurately measure the reality of fluid
Flow, it is also necessary to using the pressure and temperature of pressure transmitter and temperature sensor detection medium, and pass through temperature and pressure compensation algorithm
Calculate actual flow.Differential pressure transmitter measures differential pressure and pressure transmitter measurement pressure needs to be taken using pressure pipeline
Pressure.In the gas flow measurement containing impurity such as water or dust such as coal gas, exhaust gas, normal air, pressure pipeline is by impurity
Influence often results in blocking, influences the accuracy of flow measurement, needs to carry out pipeline cleaning, pressure pipe is needed replacing when serious
Road increases maintenance workload and maintenance cost；In order to avoid there is the above problem, blown in the prior art frequently with pressure pipeline
Method is swept, there are mainly two types of modes for this method：
First, by being transformed to pressure pipeline, increases source purge gas pipeline and shut-off valve, can be operated with manual site
Each shut-off valve realizes the cleaning to pressure pipeline；
Second is that shut-off valve is changed to electromagnet cut off valve, solenoid valve is operated by remote operation button, or is used
PLC controller carries out self-timing control.
Above method has the following problems in the prior art：First, the instantaneous flow of flow instrument is zero in purge,
Cause measurement deviation, accuracy of detection low；Second is that cannot reliably end under electromagnet cut off valve fault condition, high-pressure blowing may be caused
Gas seals in transmitter and causes equipment damage, increases operation and maintenance cost, influences the efficiency of detection.
Invention content
The technical problems to be solved by the invention provide one kind certainly aiming at the above-mentioned deficiency present in the prior art
Clean flow detector；The configuration of the present invention is simple, easily operated, high certainty of measurement, working service is easy to maintenance, solves existing
Have be zero because of the instantaneous flow of flow instrument in purge in technology caused by measurement deviation problem, using the dual cut-out of gas circuit,
It avoids purge gass and seals in the problem of transmitter damages, it is combined by flow detector and pressure blow device, real
Existing continuous flow integrating and on-line automatic timing purging or artificial long-range purging.
This programme is achieved by the following technical measures：
A kind of automatically cleaning flow detector, including flow detector and pressure blow device, the flow detection dress
It sets including flow accumulation purging controller, differential pressure transmitter, pressure transmitter, temperature sensor, the pressure blow device packet
Include gas filtration pressure reducing valve, electromagnet cut off valve, solenoid directional control valve, pressure pipeline, three valve groups；The flow accumulation purges controller
It is electrically connected with differential pressure transmitter, pressure transmitter, temperature sensor, electromagnet cut off valve, solenoid directional control valve by signal wire, it is described
Electromagnet cut off valve includes electromagnet cut off valve one, electromagnet cut off valve two, electromagnet cut off valve three, and the solenoid directional control valve includes two three
Three-way electromagnetic valve one, two-position three way magnetic valve two, two-position three way magnetic valve three, the pressure pipeline include differential pressure high pressure pressure pipe
Road, differential pressure low pressure pressure pipeline, pressure pressure pipeline, the entrance of the gas filtration pressure reducing valve connects purging feed channel, described to blow
The pressure of scavenging, which is higher than, is measured pipeline pressure, and the outlet of gas filtration pressure reducing valve ends with electromagnet cut off valve one, electromagnetism respectively
Valve two, electromagnet cut off valve three entrance be connected in parallel, the outlet of electromagnet cut off valve one and the medium of two-position three way magnetic valve one go out
Mouth connection, the working hole of two-position three way magnetic valve one are connect with differential pressure high pressure pressure pipeline, the medium of two-position three way magnetic valve one
Import is connect with the high pressure entry of three valve groups, and the high-pressure outlet of three valve groups and the high-pressure process interface of differential pressure transmitter connect；Electricity
The outlet of magnetic shut-off valve two is connect with the media outlet of two-position three way magnetic valve two, the working hole of two-position three way magnetic valve two with it is poor
The connection of pressure pipeline is forced down, the medium entrance of two-position three way magnetic valve two is connect with the low-pressure inlet of three valve groups, three valve groups
The low pressure event interface of low tension outlet and differential pressure transmitter connects；The outlet of electromagnet cut off valve three and two-position three way magnetic valve three
Media outlet connects, and the working hole of two-position three way magnetic valve three is connect with pressure pressure pipeline, Jie of two-position three way magnetic valve three
Matter import is connect with pressure transmitter；The flow accumulation purging controller controls electromagnet cut off valve one, electromagnetism by electric signal
The shape of shut-off valve two, electromagnet cut off valve three, two-position three way magnetic valve one, two-position three way magnetic valve two, two-position three way magnetic valve three
State realizes the switching of blowing pipeline and pressure state.
It is nitrogen, pressure that the purge gass, which use the air source for being higher than with predetermined pressure and being measured pipeline pressure, the air source,
Contracting air, steam, air source are supplied by pipe network or are supplied by air accumulator, when flow accumulation purging controller control is in purging shape
When state, purge gass enter measured pipeline from air source through purging pipeline, realize the purging to purging pipeline and cleaning.
Automatically cleaning flow detector is in pressure working condition, and under flow accumulation purging controller control, electromagnetism is cut
Only valve one, electromagnet cut off valve two, electromagnet cut off valve three keep cut-off state, the two-position three way magnetic valve one, two-position three way electricity
Magnet valve two, three keep medium import of two-position three way magnetic valve and working hole are connected, differential pressure high pressure pressure pipeline, two-position three-way electromagnetic
Valve one, the high-pressure channel of three valve groups, differential pressure transmitter high-pressure process interface form the differential pressure high pressure pressure pipeline connected, and differential pressure is low
Pressure pipeline, two-position three way magnetic valve two, the low-pressure channel of three valve groups, differential pressure transmitter low pressure event interface is pressed to form connection
Differential pressure low pressure pressure pipeline, pressure pressure pipeline, two-position three way magnetic valve three, pressure transmitter form the pressure pressure pipe connected
Road, the flow accumulation purging controller receives the electric signal of differential pressure transmitter, pressure transmitter, temperature sensor, using temperature
Backoff algorithm is pressed to calculate practical instantaneous flow.
Automatically cleaning flow detector is in purging working condition, under flow accumulation purging controller control, the electricity
Magnetic shut-off valve one, electromagnet cut off valve two, electromagnet cut off valve three are kept open, and control two-position three way magnetic valve one, two three
Three-way electromagnetic valve two, two-position three way magnetic valve three are media outlet to working hole, differential pressure high pressure pressure pipeline, two-position three way magnetic valve
One, electromagnet cut off valve one, gas filtration pressure reducing valve form the differential pressure high-pressure blowing pipeline connected, differential pressure low pressure pressure, two three
Three-way electromagnetic valve two, electromagnet cut off valve two, gas filtration pressure reducing valve form the differential pressure low pressure purge pipeline connected, pressure pressure pipe
Road, two-position three way magnetic valve three, electromagnet cut off valve one, gas filtration pressure reducing valve form the pressure purge pipeline connected, purge gass
It is blown into the pipeline at scene from pipeline, realizes pipe-line purging, initial value is constant under practical instantaneous flow holding pressure state, avoids blowing
Instantaneous flow under state is swept to be zeroed；The flow accumulation purging controller carries out integrating to practical instantaneous flow and generates accumulative stream
Amount.
The flow accumulation purging controller is equipped with self-timing purging, artificial long-range purging both of which, flow accumulation
Purging controller is operated in progress self-timing purging, Huo Zheyou under auto state by human interface device, control purge gass
Manual operation switching purging and detecting state realize artificial long-range purging；Under self-timing purge mode, according to pre-setting
Good purging interval time limit and purging duration limit, flow accumulation purging controller calculates, confirms and starts from last time purging
Purging interval time, when purge interval time be more than purging interval time limit after, carry out automatically into purging state, and start to count
The purging duration is calculated, after it is more than to purge duration limit to purge the duration, purging stops；In artificial long-range purge mode
Under, the man-machine interface that operating personnel can purge controller band by flow accumulation sends out purging to flow accumulation purging controller
Instruction stops purging instruction, realizes remote control purging.
The automatically cleaning flow detector is set in an instrument box.
The flow accumulation purging controller is set to position easy to operation outside instrument box.
The advantageous effect of this programme
1. the present invention is combined by flow detector and pressure blow device, using integrated design, flow inspection is realized
It surveys and continuous flow integrating and on-line automatic timing purging or artificial long-range purging, effective solution pressure line clogging
Problem realizes the dirty gas flow of long-term online stably measured；The configuration of the present invention is simple, easily operated, high certainty of measurement makes
It is convenient with maintenance and repair, solve be in the prior art zero because of the instantaneous flow of flow instrument in purge caused by measurement deviation
Problem using the dual cut-out of gas circuit, avoids purge gass and seals in the problem of transmitter damages, and the present invention realizes to exist for a long time
The dirty gas flow of line stably measured.
2. the device of the invention can cross the switching between each valve body state in pipeline all in an instrument box
Two kinds of pipelines can be formed：Pressure pipeline and clean pipeline, can periodically in pipeline dust, it is dirty clean, prevent
Pipeline blockage, to solve the technical issues of can not normally being detected because of line clogging in the prior art, it is ensured that instrument works
In optimum Working；Dual cut-out can be carried out to pressure pipeline, avoid purge gass and seal in transmitter and cause to damage when purging
Bad problem reduces and uses good maintenance cost, improves work efficiency and utilization rate of equipment and installations, high financial profit；It works in device
Under purging state, initial value is constant under practical instantaneous flow holding pressure state, avoids instantaneous flow under purging state from being zeroed, surveys
It is good to measure stability, high certainty of measurement.In addition, above-mentioned apparatus is all compact-sized in an instrument box, occupied space is few,
It is particularly suitable for the smaller field of employment in space.
3. the present invention is using the company of two-position three way magnetic valve control, switching and field pipes and purging pipeline or pressure pipeline
State, while connecting or disconnecting using electromagnet cut off valve control purging pipeline are connect, the dual cut-out to pressure pipeline is realized,
Structural stability, reliability are high, avoid purge gass and seal in the problem of transmitter damages.
Description of the drawings
Fig. 1 is the structural schematic diagram of the specific embodiment of the invention.
Wherein, 1 flow accumulation purges controller, 2 differential pressure transmitters, 3 pressure transmitters, 4 temperature sensors, 5 gas mistakes
Filter pressure reducing valve, 6 electromagnet cut off valve one, 7 electromagnet cut off valve two, 8 electromagnet cut off valve three, 9 two-position three way magnetic valves one, 10 2 three
Three-way electromagnetic valve two, 11 two-position three way magnetic valves three, 12 differential pressure high pressure pressure pipelines, 13 differential pressure low pressure pressure pipelines, 14 pressure take
Pressure pipeline, 15 3 valve groups.
Specific implementation mode
In order to clarify the technical characteristics of the invention, below by a specific implementation mode, and its attached drawing is combined, it is right
This programme is illustrated.
In conjunction with Fig. 1, a kind of automatically cleaning flow detector, including flow detector and pressure blow device, the stream
Amount detecting device includes that flow accumulation purges controller 1, differential pressure transmitter 2, pressure transmitter 3, temperature sensor 4, described to take
It includes gas filtration pressure reducing valve 5, electromagnet cut off valve, solenoid directional control valve, pressure pipeline, three valve groups 15 to press blow device；The stream
Measure integrating purging controller 1 by signal wire and differential pressure transmitter 2, pressure transmitter 3, temperature sensor 4, electromagnet cut off valve,
Solenoid directional control valve is connected into horizontal electrical signal, constitutes detecting and controlling system, and the electromagnet cut off valve includes electromagnet cut off valve 1, electricity
Magnetic shut-off valve 27, electromagnet cut off valve 38, the solenoid directional control valve include two-position three way magnetic valve 1, two-position three way magnetic valve
2 10, two-position three way magnetic valve 3 11, the pressure pipeline include differential pressure high pressure pressure pipeline 12, differential pressure low pressure pressure pipeline
13, pressure pressure pipeline 14；The entrance of the gas filtration pressure reducing valve 5 connects purging feed channel, the outlet of gas filtration pressure reducing valve 5
The entrance with electromagnet cut off valve 1, electromagnet cut off valve 27, electromagnet cut off valve 38 is connected in parallel respectively, wherein electromagnet cut off valve
One 6 outlet is connect, the work of two-position three way magnetic valve 1 with the media outlet (the R mouths i.e. in figure) of two-position three way magnetic valve 1
Make mouth (the A mouths in figure) to connect with differential pressure high pressure pressure pipeline 12, the medium entrance (P in figure of two-position three way magnetic valve 1
Mouthful) connect with the high pressure entry of three valve groups 15, the high-pressure outlet of three valve groups 15 connects with the high-pressure process interface of differential pressure transmitter 2
It connects；The outlet of electromagnet cut off valve 27 is connect with the media outlet of two-position three way magnetic valve 2 10, two-position three way magnetic valve 2 10
Working hole is connect with differential pressure low pressure pressure pipeline 13, and the medium entrance of two-position three way magnetic valve 2 10 and the low pressure of three valve groups 15 enter
Mouth connection, the low tension outlet of three valve groups 15 are connect with the low pressure event interface of differential pressure transmitter 2；The outlet of electromagnet cut off valve 38
It is connect, the working hole and pressure of two-position three way magnetic valve 3 11 with the media outlet (the R mouths in figure) of two-position three way magnetic valve 3 11
Power pressure pipeline 14 connects, and the medium entrance of two-position three way magnetic valve 3 11 is connect with pressure transmitter 3.The automatically cleaning flow
Detection device can be set in an instrument box.Certainly, the flow accumulation purging controller can also be set to outside instrument box just
In the position of operation.
The purge gass are used with predetermined pressure and pressure is higher than the air source for being measured pipeline pressure, and air source can be nitrogen
Gas, compressed air, steam etc., air source are supplied by pipe network or are supplied by air accumulator, and the purging of pressure pipeline is used for.Work as flow
Integrating purges controller control in the state of purging, and purge gass enter measured pipeline from air source through purging pipeline, realize to blowing
Sweep purging and the cleaning of pipeline.
The flow accumulation purging controller 1 controls electromagnet cut off valve 1, electromagnet cut off valve 27, electromagnetism by electric signal
The state of shut-off valve 38, two-position three way magnetic valve 1, two-position three way magnetic valve 2 10, two-position three way magnetic valve 3 11 is realized
The switching of blowing pipeline and pressure state.
Automatically cleaning flow detector is in pressure working condition, in the case where flow accumulation purging controller 1 controls, the electricity
Magnetic shut-off valve 1, electromagnet cut off valve 27, electromagnet cut off valve 38 keep cut-off state, the two-position three way magnetic valve one 9, two
Position-3-way solenoid valve 2 10,3 11 keep medium import of two-position three way magnetic valve and working hole are connected, differential pressure high pressure pressure pipeline
12, two-position three way magnetic valve 1, the high-pressure channel of three valve groups 15,2 high-pressure process interface of differential pressure transmitter form the differential pressure connected
High pressure pressure pipeline, differential pressure low pressure pressure pipeline 13, two-position three way magnetic valve 2 10, the low-pressure channel of three valve groups 15, differential pressure become
2 low pressure event interface of device is sent to form the differential pressure low pressure pressure pipeline connected, pressure pressure pipeline 14, two-position three way magnetic valve three
11, the pressure pressure pipeline that the formation of pressure transmitter 3 is connected, the flow accumulation purging reception of controller 1 differential pressure transmitter 2,
The electric signal of pressure transmitter 3, temperature sensor 4 calculates practical instantaneous flow using temperature and pressure compensation algorithm.
Automatically cleaning flow detector is in the case where purging working condition, in the case where flow accumulation purging controller 1 controls, the electricity
Magnetic shut-off valve 1, electromagnet cut off valve 27, electromagnet cut off valve 38 are kept open, and control two-position three way magnetic valve one 9, two
Position-3-way solenoid valve 2 10, two-position three way magnetic valve 3 11 are that media outlet is connected to working hole, i.e. R-A, differential pressure high pressure pressure
Pipeline 12, two-position three way magnetic valve 1, electromagnet cut off valve 1, gas filtration pressure reducing valve 5 form the differential pressure high-pressure blowing connected
Pipeline, differential pressure low pressure pressure 13, two-position three way magnetic valve 2 10, electromagnet cut off valve 27, gas filtration pressure reducing valve 5, which are formed, to be connected
Differential pressure low pressure purge pipeline, pressure pressure pipeline 14, two-position three way magnetic valve 3 11, electromagnet cut off valve 1, gas filtration subtract
Pressure valve 5 forms the pressure purge pipeline connected, and purge gass are blown into the pipeline at scene from pipeline, realize pipe-line purging, practical wink
Initial value is constant under Shi Liuliang holding pressure states, and instantaneous flow under purging state is avoided to be zeroed；The flow accumulation purging control
Instrument 1 carries out integrating to practical instantaneous flow and generates integrated flow.
The flow accumulation purging controller is equipped with self-timing purging, artificial long-range purging two ways, flow accumulation
Controller is purged by human interface device, purge gass is made to be operated in progress self-timing purging under auto state, it can also be by
Manual operation switching purging and detecting state realize artificial long-range purging；It, can be according to advance under self-timing purge mode
The purging interval time limit and purging duration limit set, the software of flow accumulation purging controller were calculated automatically from last time
The purging interval time started is purged, after it is more than to purge interval time limit to purge interval time, is carried out automatically into purging state,
And start to calculate the purging duration, after it is more than to purge duration limit to purge the duration, purging stops.Artificial long-range
Under purge mode, the man-machine interface that operating personnel can purge controller band by flow accumulation purges controller to flow accumulation
It sends out purging instruction or stops purging instruction, realize remote control purging.
Although above-mentioned be described the specific implementation mode of invention in conjunction with attached drawing, not to the scope of the present invention
Limitation, based on the technical solutions of the present invention, those skilled in the art, which need not make the creative labor, to be made
Various modifications or changes still within protection scope of the present invention.
Claims (7)
1. a kind of automatically cleaning flow detector, characterized in that including flow detector and pressure blow device, the flow
Detection device includes flow accumulation purging controller, differential pressure transmitter, pressure transmitter, temperature sensor, the pressure purging
Device includes gas filtration pressure reducing valve, electromagnet cut off valve, solenoid directional control valve, pressure pipeline, three valve groups；The flow accumulation purging
Controller is electrically connected by signal wire and differential pressure transmitter, pressure transmitter, temperature sensor, electromagnet cut off valve, solenoid directional control valve
It connects, the electromagnet cut off valve includes electromagnet cut off valve one, electromagnet cut off valve two, electromagnet cut off valve three, the solenoid directional control valve packet
Two-position three way magnetic valve one, two-position three way magnetic valve two, two-position three way magnetic valve three are included, the pressure pipeline includes differential pressure high pressure
Pressure pipeline, differential pressure low pressure pressure pipeline, pressure pressure pipeline, the entrance of the gas filtration pressure reducing valve connect purging feed channel,
The pressure of the purge gass, which is higher than, is measured pipeline pressure, the outlet of gas filtration pressure reducing valve respectively with electromagnet cut off valve one, electricity
Magnetic shut-off valve two, electromagnet cut off valve three entrance be connected in parallel, the outlet of electromagnet cut off valve one and two-position three way magnetic valve one
Media outlet connects, and the working hole of two-position three way magnetic valve one is connect with differential pressure high pressure pressure pipeline, two-position three way magnetic valve one
Medium entrance connect with the high pressure entry of three valve groups, the high-pressure process interface of the high-pressure outlets of three valve groups and differential pressure transmitter connects
It connects；The outlet of electromagnet cut off valve two is connect with the media outlet of two-position three way magnetic valve two, the work of two-position three way magnetic valve two
Mouth is connect with differential pressure low pressure pressure pipeline, and the medium entrance of two-position three way magnetic valve two is connect with the low-pressure inlet of three valve groups, and three
The low tension outlet of valve group and the low pressure event interface of differential pressure transmitter connect；The outlet of electromagnet cut off valve three and two-position three-way electromagnetic
The media outlet of valve three connects, and the working hole of two-position three way magnetic valve three is connect with pressure pressure pipeline, two-position three way magnetic valve
Three medium entrance is connect with pressure transmitter；The flow accumulation purging controller controls electromagnet cut off valve by electric signal
One, electromagnet cut off valve two, electromagnet cut off valve three, two-position three way magnetic valve one, two-position three way magnetic valve two, two-position three way magnetic valve
Three state realizes the switching of blowing pipeline and pressure state.
2. automatically cleaning flow detector as described in claim 1, characterized in that the purge gass, which use, carries predetermined pressure
Higher than the air source of measured pipeline pressure, the air source is nitrogen, compressed air, steam, and air source is supplied by pipe network or air accumulator
Give, when flow accumulation purging controller control is in purge state, purge gass from air source through purge pipeline enter measured pipeline,
Realize the purging to purging pipeline and cleaning.
3. automatically cleaning flow detector as described in claim 1 or 2, characterized in that at automatically cleaning flow detector
In pressure working condition, under flow accumulation purging controller control, electromagnet cut off valve one, electromagnet cut off valve two, electromagnetism cut-off
Valve three keeps cut-off state, the two-position three way magnetic valve one, two-position three way magnetic valve two, two-position three way magnetic valve three to keep being situated between
Matter import is connected with working hole, and differential pressure high pressure pressure pipeline, two-position three way magnetic valve one, the high-pressure channel of three valve groups, differential pressure become
Send device high-pressure process interface formed connect differential pressure high pressure pressure pipeline, differential pressure low pressure pressure pipeline, two-position three way magnetic valve two,
Low-pressure channel, the differential pressure transmitter low pressure event interface of three valve groups form the differential pressure low pressure pressure pipeline connected, pressure pressure pipe
Road, two-position three way magnetic valve three, pressure transmitter form the pressure pressure pipeline connected, and the flow accumulation purging controller connects
The electric signal of astigmat pressure transmitter, pressure transmitter, temperature sensor calculates practical instantaneous flow using temperature and pressure compensation algorithm.
4. automatically cleaning flow detector as described in claim 1 or 2, characterized in that at automatically cleaning flow detector
In purging working condition, under flow accumulation purging controller control, the electromagnet cut off valve one, electromagnet cut off valve two, electromagnetism
Shut-off valve three is kept open, and control two-position three way magnetic valve one, two-position three way magnetic valve two, two-position three way magnetic valve three are
Media outlet to working hole, depressurize by differential pressure high pressure pressure pipeline, two-position three way magnetic valve one, electromagnet cut off valve one, gas filtration
Valve forms the differential pressure high-pressure blowing pipeline connected, the pressure of differential pressure low pressure, two-position three way magnetic valve two, electromagnet cut off valve two, gas
Filtering pressure reducing valve forms the differential pressure low pressure purge pipeline connected, pressure pressure pipeline, two-position three way magnetic valve three, electromagnet cut off valve
One, gas filtration pressure reducing valve forms the pressure purge pipeline connected, and purge gass are blown into the pipeline at scene from pipeline, realize pipeline
It cleans, initial value is constant under practical instantaneous flow holding pressure state, and instantaneous flow under purging state is avoided to be zeroed；The flow product
It calculates purging controller and integrating generation integrated flow is carried out to practical instantaneous flow.
5. automatically cleaning flow detector as described in claim 1 or 2, characterized in that the flow accumulation purging control
Instrument is equipped with self-timing purging, artificial long-range purging both of which, and flow accumulation purges controller and passes through human interface device, control
Purge gass processed are operated in progress self-timing purging under auto state, or by manual operation switching purging and detecting state, reality
Now artificial long-range purging；Under self-timing purge mode, is limited according to the purging interval time pre-set and purging continues
Time limits, and flow accumulation purging controller calculates, confirms the purging interval time started from last time purging, when purging interval time
It after purging interval time limit, carries out automatically into purging state, and starts to calculate the purging duration, when the purging duration
After purging duration limit, purging stops；Under artificial long-range purge mode, operating personnel can be blown by flow accumulation
The man-machine interface for sweeping controller band sends out purging instruction to flow accumulation purging controller or stops purging instruction, realizes long-range control
System purging.
6. automatically cleaning flow detector as described in claim 1, characterized in that the automatically cleaning flow detector is set to
In one instrument box.
7. automatically cleaning flow detector as claimed in claim 6, characterized in that the flow accumulation purging controller is set to
Position easy to operation outside instrument box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848861.XA CN105300459B (en) | 2015-11-26 | 2015-11-26 | Automatically cleaning flow detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848861.XA CN105300459B (en) | 2015-11-26 | 2015-11-26 | Automatically cleaning flow detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105300459A CN105300459A (en) | 2016-02-03 |
| CN105300459B true CN105300459B (en) | 2018-07-31 |
Family
ID=55197985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510848861.XA Expired - Fee Related CN105300459B (en) | 2015-11-26 | 2015-11-26 | Automatically cleaning flow detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105300459B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903729A (en) * | 2016-06-15 | 2016-08-31 | 武金玉 | Anti-blocking purging device |
| CN107631765B (en) * | 2017-09-05 | 2020-07-07 | 合肥科迈捷智能传感技术有限公司 | Differential pressure flowmeter water treatment method |
| CN107764361B (en) * | 2017-09-13 | 2024-04-30 | 美核电气（济南）股份有限公司 | Purging system and method for differential pressure measurement of nuclear power station |
| CN108918789A (en) * | 2018-09-08 | 2018-11-30 | 深圳市能源环保有限公司 | A kind of purge gass air supply system of the continuous on-line monitoring system of power-plant flue gas |
| EP3772048B1 (en) * | 2019-07-31 | 2021-06-16 | Siemens Aktiengesellschaft | Overpressure encapsulation |
| CN111617539B (en) * | 2020-06-07 | 2021-09-03 | 南京依柯卡特排放技术股份有限公司 | Pipeline filtration water treatment reverse-flow type self-cleaning system |
| CN112362297B (en) * | 2020-10-19 | 2023-11-28 | 中国科学院合肥物质科学研究院 | Divertor purging test loop data acquisition system and method |
| CN113023822A (en) * | 2021-04-19 | 2021-06-25 | 中国石油天然气股份有限公司 | Activated carbon filtering device, control method and filtering system |
| CN114210628B (en) * | 2021-12-07 | 2023-07-25 | 浙江浙能嘉华发电有限公司 | Control method of intelligent flushing device of parallel pressure-taking pipeline |
| CN114216211B (en) * | 2021-12-16 | 2022-09-23 | 珠海格力电器股份有限公司 | Filter screen filth blockage detection assembly of fresh air conditioner, fresh air conditioner and control method of fresh air conditioner |
| CN114354054A (en) * | 2022-01-05 | 2022-04-15 | 东华工程科技股份有限公司 | Novel low-temperature corrosive gas online pressure or differential pressure continuous detection system |
| CN117404031B (en) * | 2023-12-14 | 2024-03-08 | 中国石油集团川庆钻探工程有限公司 | Ultrasonic flow detection device capable of switching pipelines and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844860Y (en) * | 2005-10-11 | 2006-12-06 | 济南钢铁股份有限公司 | Online sweeping flowmeter pressure sampling tube device |
| CN201561772U (en) * | 2009-12-11 | 2010-08-25 | 冯磊 | Self-cleaning type gas flow device |
| CN202304904U (en) * | 2011-11-01 | 2012-07-04 | 北京雪迪龙科技股份有限公司 | Pitot tube flowmeter blowing device and Pitot tube flowmeter adopting same |
| CN205156976U (en) * | 2015-11-26 | 2016-04-13 | 山东钢铁股份有限公司 | Automatically cleaning flow detection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007218586A (en) * | 2006-02-14 | 2007-08-30 | Yokogawa Electric Corp | Multi-variable mass flow rate transmitter |
-
2015
- 2015-11-26 CN CN201510848861.XA patent/CN105300459B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844860Y (en) * | 2005-10-11 | 2006-12-06 | 济南钢铁股份有限公司 | Online sweeping flowmeter pressure sampling tube device |
| CN201561772U (en) * | 2009-12-11 | 2010-08-25 | 冯磊 | Self-cleaning type gas flow device |
| CN202304904U (en) * | 2011-11-01 | 2012-07-04 | 北京雪迪龙科技股份有限公司 | Pitot tube flowmeter blowing device and Pitot tube flowmeter adopting same |
| CN205156976U (en) * | 2015-11-26 | 2016-04-13 | 山东钢铁股份有限公司 | Automatically cleaning flow detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105300459A (en) | 2016-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105300459B (en) | Automatically cleaning flow detector | |
| CN109506743B (en) | Flowmeter online calibration device and calibration method | |
| CN205981740U (en) | Flue gas able to programme prevents that stifled sampler pressure differential pressure sweeps control box | |
| CN205156976U (en) | Automatically cleaning flow detection device | |
| CN102313139A (en) | Online density measurement method and device of petroleum transmission pipeline | |
| CN206132329U (en) | Gasbag solenoid valve detection device | |
| KR101951946B1 (en) | Cleaning system for orifice of by-product gas providing pipe | |
| CN206469920U (en) | A kind of distinguished and admirable measuring device | |
| CN207263366U (en) | A kind of automatic blowout device of flue gas pressures detection | |
| CN204924867U (en) | Flue dust concentration on line measurement system and measuring equipment | |
| CN109459097B (en) | Matrix distributed flow measuring device for online descaling and cold-hot state comparison | |
| CN214893839U (en) | High-efficient, stable wind pressure is measured and is prevented stifled device that sweeps | |
| CN102313138B (en) | Online density measurement method of petroleum transmission pipeline | |
| CN207659398U (en) | A kind of automatic oil dewatering system | |
| CN203148508U (en) | Pressure-leading device of transmitter for measuring liquid level in LNG production equipment | |
| CN102620145A (en) | Automatic low-pressure protection system for coke oven gas pipeline | |
| CN204228228U (en) | Cork dry quenching disposable dust remover material-level detecting device | |
| CN202885892U (en) | Automatic purging device for clean flue gas flow measurement | |
| CN105628290A (en) | Novel gas-phase differential pressure measuring device | |
| CN201739776U (en) | On-line density measuring device for oil delivery pipelines | |
| CN102840891A (en) | Net fume flow automatic blowing device and method | |
| CN109283297B (en) | Independent calibration sampling system for hydrogen online analysis | |
| CN204034873U (en) | Electrostatic precipitation system and send apparatus for ash | |
| CN207601049U (en) | A kind of novel C EMS reverse blow devices | |
| CN215031944U (en) | Component protection structure based on automatic ash removal control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180731 Termination date: 20181126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |