CN202041249U - Intelligent full-automatic reverse-blowing anti-blocking detection device - Google Patents
Intelligent full-automatic reverse-blowing anti-blocking detection device Download PDFInfo
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- CN202041249U CN202041249U CN2011200528052U CN201120052805U CN202041249U CN 202041249 U CN202041249 U CN 202041249U CN 2011200528052 U CN2011200528052 U CN 2011200528052U CN 201120052805 U CN201120052805 U CN 201120052805U CN 202041249 U CN202041249 U CN 202041249U
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Abstract
The utility model relates to an air volume flowmeter blowing device, in particular to an intelligent full-automatic reverse-blowing anti-blocking detection device. The intelligent full-automatic reverse-blowing anti-blocking detection device comprises a blowing controller which is connected with a differential pressure transmitter, two groups of magnetic valve, a pressure maintaining valve and a flowmeter pressure leading pipe in sequence. The blowing controller is further connected with a distributed control system (DCS). The intelligent full-automatic reverse-blowing anti-blocking detection device has intense pulse and high reliability and runs full-automatically, and a timer arranged in the blowing device can automatically trigger blowing movements without manual intervention, thereby greatly improving safety of a flow measurement system, ensuring accuracy of real-time checking and comparison of differential pressure and air volume and being used for the most important energy-saving links, such as air volume measurement of boilers of large power plants.
Description
One, technical field:
The utility model relates to the complete differential pressure type air quantity blowback of a cover and sweeps technology, especially relates to
Anti-blockage detection device is swept in a kind of intelligent full-automatic blowback, and it is mainly used in and guarantees that various pipeline gas flows or similar measurement and output signal are corresponding in real time, and confirms system stability, reliable sensing measurement.
Two, background technology:
At present, power plant's industry, steel industry, paper industry, chemical industry, sewage treatment industry, colliery industry, refinery industry, biological burning boiler industry, the energy-saving and emission-reduction emphasis is dedusting, and desulfurization does not cause enough attention to improving the air measuring accuracy to increase boiler thermal output as yet.The burning of boiler is the chemical reaction of carbon and oxygen, and an appropriate fuel/air mixture ratio should be arranged, and could finish this chemical reaction effectively.Air (oxygen) deficiency, incomplete combustion; Air is crossed and is caused boiler thermal output to reduce at most.Be provided with from control system, flame-out for avoiding the oxygen supply deficiency to cause, often take peroxide operation, the peroxide amount often reaches 2～3%, cause 10～15% air by meaningless heating, transport, discharge, cause boiler thermal output not high.According to the related data estimation, be 8～10% as the air quantity accuracy, boiler thermal output only is 70～74%, as takes multinomial measure, and air measuring reliability and accuracy are increased to 2～3%, then boiler thermal output can be increased to 80～84%.Xinhua News Agency Beijing China Electricity Council's on January 17th, 2011 distributing data on the 17th, China's electric power scale in 2010 continues to enlarge, capacity of installed generator will reach 9.62 hundred million kilowatts in the end of the year, the thermoelectricity installed capacity of proportion maximum reaches 70,663 ten thousand kilowatts, improve the air measuring accuracy as common employing new technology, to promote China's energy-saving and emission-reduction effectively, have great strategic importance.
Wind, secondary air and a flue such as large-sized boiler, cement furnace all need air mass flow is accurately measured, and the air-flow measurement the most reliable the most accurate flowmeter (various crust classes and cross section formula) that is based on differential pressure principle, the differential pressure principle flowmeter all needs the pressure before and after the sensing element is drawn out to differential pressure transmitter, but there is following problem in the application of differential pressure principle flowmeter at present:
1. differential pressure type survey sensor measurement mouth is very little, about general 2-3mm, and tested gas contains certain dust, almost there is not flow near the sensor port, along with near the variation dust settling of the flow impulse mouth even in the pipeline, cause impulse throttling even obstruction, differential pressure can not well reflect fluctuations in discharge; After the throttling of sensor impulse even stopping up, there is not effective detection means again, cause differential pressure transmitter normally to measure the air quantity actual value in real time, influence DCS real-time closed-loop control wind coal proportion, seriously influence energy-conserving and environment-protective.
The impulse pipeline blocked after, purge if manually introduce pressurized air, then need to force air volume signal, if this moment automatic system increasing or reducing air quantity or a disturbance is arranged, influence the safety in production and the benefit of whole factory.Purge manually that not only efficient is low, and security risk is big, personnel require height to purging.
3, when stopping up, little stifled or part can not in time inform the operations staff.
Three, utility model content:
The utility model provides a kind of and prevents in order to solve the weak point in the above-mentioned background technology
The impulse passage is stopped up by dust, manually purge efficient low and easily cause maloperation and air quantity sensing stop up can not the detecting real-time advance notice intelligent full-automatic blowback sweep anti-blockage detection device.
For achieving the above object, the technical solution adopted in the utility model is: a kind of intelligent full-automatic flowmeter is with purging anti-block apparatus, it is characterized in that: comprise the purging controller, described purging controller is connected with differential pressure transmitter, electromagnetic valve group, pressure maintaining valve and flowmeter pressure guiding pipe in turn, also be connected with the DCS control system on the described purging controller, described purging controller is connected in sequence by differential pressure transmitter, A/D converter, microprocessor, A/D converter and DCSAL input card, also is connected with relay and solenoid valve on the microprocessor in turn.
Described electromagnetic valve group is divided into two groups.
Compared with prior art, the advantage and the effect that the utlity model has are as follows:
1, purging is high power pulse, automatically carries out, and has timer to trigger automatically to purge in the blow device and moves, and need not manual intervention.
2, this device can be implemented hard the isolation and electricity " maintenance " to differential pressure in purge, can not influence the operate as normal of control system like this because of compressed-air actuated purging, has improved the security and the reliability of Flow Measuring System greatly.
3, the work of this device is flexible, and design has the manual activity button, when scene tour personnel think that the needs purging maybe needs to test, can surmount control by hand push button and start purging immediately.
4, this device has the artificial intelligence function of measuring pipeline tightness self diagnosis during purging.Controller starts when purging, when finding that pressure guiding pipe leads to the gas-path leakage of differential pressure transmitter or fails reliable cut off or during measuring tube gas leakage, controller can withdraw from purging immediately, and produces " purge and isolate failure or measure pipeline gas leakage " alerting signal.
5, this installs that not only reliability is high, also has artificial intelligence, can judge to eat and sweep effect, guarantees the accuracy of the real-time check contrast of differential pressure and air quantity.
Four, description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 purges the circuit theory diagrams of controller for the utility model.
Among the figure, 1-purging controller, 2-pressure maintaining valve, 3-electromagnetic valve group, 4-flowmeter pressure guiding pipe, 5-differential pressure transmitter, 6-DCS control system, 7-differential pressure transmitter, 8-A/D converter, 9-microprocessor, 10-A/D converter, 11-DCSAL input card, 12-relay, 13-solenoid valve.
Five, embodiment:
Referring to Fig. 1, this device is formed by purging the differential pressure transmitter 5, electromagnetic valve group 3, pressure maintaining valve 2 and the flowmeter pressure guiding pipe 4 that connect successively on the controller 1, also be connected with DCS control system 6 on the described purging controller 1, it is the core of whole device that purging controller 1 has, when preset time arrives, purging controller 1 gives electromagnetic valve group 3 energisings, V1 V2 cuts off gas circuit immediately in the electromagnetic valve group, V3 V4 opens gas circuit then, pressurized air enters flowmeter pressure guiding pipe 4 through pressure maintaining valve 2, purges the dust that is deposited in the pressure guiding pipe clean.Purging finish time period, purging 1 pair of electromagnetic valve group outage of controller, V3 V4 cuts off the passage that pressurized air leads to pressure guiding pipe 4, and V1V2 opens gas circuit, and the pressure signal of pressure guiding pipe 4 recovers to be switched to differential pressure transmitter 5.In whole purge, purge the analog current signal of controller detection differential pressure transmitter, in case V3V4 is to the cut-out failure of gas circuit, differential pressure transmitter must be exported a very big differential pressure value, purge controller and withdraw from the purging state immediately this moment, electromagnetic valve group 3 returns to non-purging state, guarantees not damage differential pressure transmitter.
Referring to Fig. 2, Fig. 2 is for purging the circuit theory diagrams of controller, purge controller 1 and be connected in sequence, also be connected with relay 12 and solenoid valve 13 on the microprocessor 9 in turn by differential pressure transmitter 7, A/D converter 8, microprocessor 9, A/D converter 10 and DCSAL input card 11.When non-purging state, the collected A/D converter 8 of 4-20mA electric current that differential pressure transmitter 7 produces is varied to digital quantity, and microcontroller drives 10 conversions of D/A converter then, exports an onesize 4-20mA electric current, delivers to the AI input card of DCS.At this moment, the electric current that purges the output of controller 1 is equal to input current, is equivalent to lead directly to.This moment the relay coil dead electricity, solenoid valve also is in power failure state.Certainly, microprocessor is waited for purging arrival constantly always in timing.
When purging the moment arrival that starts, microprocessor at first stores this input current value in a flash, allows D/A converter export this fixed current value in whole purge time always.The safe operation of the automatic control system of DCS during guaranteeing to purge.Meanwhile, microcontroller drives relay, and relay drives the corresponding solenoid valve action, realizes the purging to gas circuit.
Claims (2)
1. anti-blockage detection device is swept in an intelligent full-automatic blowback, it is characterized in that: comprise purging controller (1), described purging controller (1) is connected with differential pressure transmitter (5) in turn, electromagnetic valve group (3), pressure maintaining valve (2) and flowmeter pressure guiding pipe (4), also be connected with DCS control system (6) on the described purging controller (1), described purging controller (1) is by differential pressure transmitter (7), A/D converter (8), microprocessor (9), A/D converter (10) and DCSAL input card (11) are connected in sequence, and also connect successively on the microprocessor (9)
Relay (12) and solenoid valve (13) are arranged.
2. anti-blockage detection device is swept in a kind of intelligent full-automatic blowback according to claim 1, and it is characterized in that: described electromagnetic valve group (3) is divided into two groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200528052U CN202041249U (en) | 2011-03-02 | 2011-03-02 | Intelligent full-automatic reverse-blowing anti-blocking detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200528052U CN202041249U (en) | 2011-03-02 | 2011-03-02 | Intelligent full-automatic reverse-blowing anti-blocking detection device |
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| Publication Number | Publication Date |
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| CN202041249U true CN202041249U (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200528052U Expired - Lifetime CN202041249U (en) | 2011-03-02 | 2011-03-02 | Intelligent full-automatic reverse-blowing anti-blocking detection device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778264A (en) * | 2012-08-10 | 2012-11-14 | 南京钢铁股份有限公司 | Automatic blowing device of converter flue gas flowmeter and control method thereof |
| CN102840891A (en) * | 2012-09-29 | 2012-12-26 | 大唐黄岛发电有限责任公司 | Net fume flow automatic blowing device and method |
| CN104043168A (en) * | 2014-06-27 | 2014-09-17 | 计宁翔 | Automatic cleaning device of exhalation differential pressure flow sensor |
| CN104697709A (en) * | 2014-12-05 | 2015-06-10 | 泽尼特泵业（苏州）有限公司 | Sewage pressure data acquisition system |
| CN107631765A (en) * | 2017-09-05 | 2018-01-26 | 合肥科迈捷智能传感技术有限公司 | A kind of differential pressure flowmeter method for treating water |
| CN107727185A (en) * | 2017-09-30 | 2018-02-23 | 格玛测控设备江苏有限公司 | A kind of online air measuring anti-clogging of automatic control |
| CN109870591A (en) * | 2019-02-20 | 2019-06-11 | 华电电力科学研究院有限公司 | Tube cell wind velocity measurement system of intelligent blowing and sweeping type and its blowing method |
| CN111520611A (en) * | 2020-05-07 | 2020-08-11 | 西安京兆电力科技有限公司 | A blowback sweeps device for measuring gas pipeline |
-
2011
- 2011-03-02 CN CN2011200528052U patent/CN202041249U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778264A (en) * | 2012-08-10 | 2012-11-14 | 南京钢铁股份有限公司 | Automatic blowing device of converter flue gas flowmeter and control method thereof |
| CN102840891A (en) * | 2012-09-29 | 2012-12-26 | 大唐黄岛发电有限责任公司 | Net fume flow automatic blowing device and method |
| CN104043168A (en) * | 2014-06-27 | 2014-09-17 | 计宁翔 | Automatic cleaning device of exhalation differential pressure flow sensor |
| CN104043168B (en) * | 2014-06-27 | 2016-05-04 | 计宁翔 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
| CN104697709A (en) * | 2014-12-05 | 2015-06-10 | 泽尼特泵业（苏州）有限公司 | Sewage pressure data acquisition system |
| CN107631765A (en) * | 2017-09-05 | 2018-01-26 | 合肥科迈捷智能传感技术有限公司 | A kind of differential pressure flowmeter method for treating water |
| CN107727185A (en) * | 2017-09-30 | 2018-02-23 | 格玛测控设备江苏有限公司 | A kind of online air measuring anti-clogging of automatic control |
| CN107727185B (en) * | 2017-09-30 | 2020-09-08 | 格玛测控设备江苏有限公司 | Anti-blocking purging device for automatic control online air volume measurement |
| CN109870591A (en) * | 2019-02-20 | 2019-06-11 | 华电电力科学研究院有限公司 | Tube cell wind velocity measurement system of intelligent blowing and sweeping type and its blowing method |
| CN109870591B (en) * | 2019-02-20 | 2023-09-19 | 华电电力科学研究院有限公司 | Intelligent purging type primary powder tube wind speed measurement system and purging method thereof |
| CN111520611A (en) * | 2020-05-07 | 2020-08-11 | 西安京兆电力科技有限公司 | A blowback sweeps device for measuring gas pipeline |
| CN111520611B (en) * | 2020-05-07 | 2022-08-02 | 西安京兆电力科技有限公司 | A blowback sweeps device for measuring gas pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181031 Address after: 710032 40501 building 28, 201 Textile Road, Baqiao District, Xi'an, Shaanxi. Patentee after: XI'AN JINGZHAO POWER TECHNOLOGY CO., LTD. Address before: 362804 room 402, 4 / F, century new town, Quangang District, Quanzhou, Fujian. Patentee before: Cai Weifeng |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |
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| CX01 | Expiry of patent term |