CN100498341C - Automatic test system for cold test of boiler and test method thereof - Google Patents
Automatic test system for cold test of boiler and test method thereof Download PDFInfo
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- CN100498341C CN100498341C CNB2004100139400A CN200410013940A CN100498341C CN 100498341 C CN100498341 C CN 100498341C CN B2004100139400 A CNB2004100139400 A CN B2004100139400A CN 200410013940 A CN200410013940 A CN 200410013940A CN 100498341 C CN100498341 C CN 100498341C
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
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- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 15
- 230000003068 static effect Effects 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 9
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- 238000005516 engineering process Methods 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000037007 arousal Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
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Abstract
本发明公开了一种锅炉冷态试验自动测试系统及其试验方法。它是通过固定装置将多只风速测量探头固定在燃烧器出口的测量位置处，测得准确的风压信号，通过连接管路将多点信号经多通接头平均后由差压变速器将压力信号转换成电信号，再经A/D转换器转换成数字量后送入微处理器处理，处理后的数据经差压无线收发器以无线通讯方式发送给主控无线收发器并通过通讯接口输入计算机进行处理，得出测量结果。本发明具有安装简便，数据准确、测量速度快、非人工测量等优点。
The invention discloses an automatic test system and a test method for a boiler cold state test. It fixes multiple wind speed measuring probes at the measuring position of the burner outlet through the fixing device to measure the accurate wind pressure signal, averages the multi-point signals through the multi-way joint through the connecting pipeline, and then the pressure signal is converted by the differential pressure transmission. Converted into electrical signals, then converted into digital quantities by the A/D converter and then sent to the microprocessor for processing, the processed data is sent to the main control wireless transceiver by wireless communication through the differential pressure wireless transceiver and input to the computer through the communication interface processing to obtain measurement results. The invention has the advantages of simple installation, accurate data, fast measurement speed, non-manual measurement and the like.
Description
Technical field
The invention belongs to the apparatus and method of the cold test of coal dust fuel boiler.
Background technology
Cold test is the important pilot project of station boiler, can recognize the control characteristic of the relevant air door that influences boiler combustion by it, can and record the power situation of gas stream in the stove with the leveling of burner outlet wind speed according to the air door family curve, for the heat state combustion adjustment provides reference frame, therefore, carrying out cold test is very helpful to boiler safety, economical operation.
The DC burner coner firing is the most important combustion system of China's station boiler, this type of boiler carries out the conventional test methodologies of cold test, be outside stove airduct and burner in the stove exit by testing crew handheld test instrument one by one spout carry out measuring wind speed, this method exists following shortcoming:
A, poor working environment
Big, dust from flying of noise and summer extremely hot (can reach more than 60 ℃) in the stove, winter cold, that gives testing crew has healthyly caused very big harm.
B, labour intensity are big
Testing crew climbs up the ladder in rugged environment, and in the air in the face of the wind speed of 30～50m/s carries out measuring wind speed, not only labour intensity is big, but also dangerous at height.
C, test length consuming time
Boiler burner spout quantity is a lot, each operating mode needs with manually each spout being carried out multimetering, for obtaining complete air door family curve, must carry out the measurement of multi-state, therefore consuming time longer, be warranty test quality and testing crew safety, in process of the test, need to do suitably to have a rest, not only increased test period, the blower fan power consumption is increased.
D, test accuracy are low
Hand-held instrument is measured facing to the wind speed of tens meters of per seconds, and arm rocks and can't avoid, and can't guarantee also that naturally instrument stabilizer and angle are correct, and test accuracy is subjected to very big influence.
Summary of the invention
The purpose of this invention is to provide a kind of wind speed automatic measuring equipment that is applied to the boiler cold-state test, so that the outlet wind speed of each spout of fast measuring burner, obtain the air door family curve of each spout and each spout is exported the wind speed leveling, for the heat state combustion adjustment is offered help.
Another object of the present invention is the characteristics according to Auto-Test System, sets up the test method that matches with it, with the unartificial measurement (measuring automatically) that realizes the boiler cold-state test.
Another purpose of the present invention provides a kind of probe that is applicable to boiler cold-state Auto-Test System measuring wind speed.
The wireless transmitter that also has a purpose to provide a kind of boiler cold-state Auto-Test System of the present invention comprises differential pressure wireless transceiver and master control wireless transceiver.
Technology official documents and correspondence of the present invention is as follows: this boiler cold-state test method is the differential pressure signal that the place, measuring position that the status requirement that many measuring wind speeds probe is measured according to gridding method is fixed on the burning outlet is recorded each point, send connecting line with the multiple spot differential pressure signal average after, convert pressure signal to electric signal through differential pressure transmitter; By A/D conversion analog quantity is converted to that digital quantity sends into that microprocessor is handled again and will handle with wireless communication mode after data send to receiver and import computing machine, by computing machine measurement result is handled, stores, exported to the data that collect.Differential pressure wireless transceiver, master control treating apparatus that the boiler cold-state of described method test Auto-Test System comprises differential pressure measuring installation, is connected with pipeline with differential pressure measuring installation; Differential pressure measuring installation is made up of probe, pressure transmission pipeline, multiple-pass joint; Supporting adn fixing device has a support bar, and several horizontal guide rods are arranged on support bar; Probe is latticed and is installed on the guide rod respectively; The differential pressure wireless transceiver is contained on the support bar.Described measuring sonde is the modified Pitot tube, at the head of pipe one total head pressure sensing hole is arranged, and has static pressure sensing hole around one week of pipe shaft on pipe shaft, at the rear portion of pipe sliding sleeve is arranged, and its afterbody is " Y " shape, and 2 withstand voltage quick couplings are housed.The differential pressure wireless transceiver is made up of differential pressure transmitter, A/D converter, microprocessor, wireless transceiver and battery, power module, differential pressure signal is through the differential pressure transmitter signal conversion voltage, and voltage signal converts the digital quantity input microprocessor to through A/D converter and handles; Data after the processing send to the master control wireless transceiver by wireless transceiver; Power management module is reverse into the power supply of different electric pressures respectively to differential pressure pick-up, A/D converter, microprocessor, wireless transceiver power supply with battery power.The master control treating apparatus comprises master control wireless transceiver, communication interface, computing machine, the master control wireless transceiver can receiving computer order, be transmitted to the differential pressure wireless transceiver with wireless communication mode, can also receive the data of uploading of differential pressure wireless transceiver on the other hand with wireless communication mode, send computing machine to through communication interface again.
Good effect of the present invention is: this Auto-Test System and test method thereof have simple installation, measure layout rationally, data transmission is smooth and easy, job stability is high, data processing is quick, testing crew need not to enter and advantage such as measures in the stove, make the cold test time shorten to about 1/10th of manual measurement, and fundamentally improved the working environment of testing crew, greatly reduced labour intensity.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 is the inventive method principle of work block scheme;
Fig. 2 is the Auto-Test System synoptic diagram;
Fig. 3 is the measuring sonde structural representation;
Fig. 4 is supporting adn fixing device and equipment scheme of installation;
Fig. 5 is that the probe gridding method is arranged and connection diagram;
Fig. 6 is a differential pressure wireless transceiver functional-block diagram;
Fig. 7 is a master control treating apparatus block scheme.
Among the figure, 1, probe, 2, differential pressure measuring installation, 3, the differential pressure wireless transceiver, 4, master control treating apparatus, 5, the total head pressure sensing hole, 6, static pressure sensing hole, 7, sliding sleeve, 8, jackscrew, 9, rapid-acting coupling, 10, static pressure delivery outlet, 11, the total head delivery outlet, 12, pipe clamp, 13, guide rod, 14, support bar, 15, sliding sleeve, 16, burner nozzle, 17, multiple-pass joint, 18, the pressure transmission pipeline.
Embodiment
With reference to Fig. 2, the differential pressure measuring installation 2 that ATE (automatic test equipment) of the present invention is made up of measuring sonde 1, connecting line and multiple-pass joint, differential pressure wireless transceiver 3 and master control treating apparatus 4 are formed whole test system.
With reference to Fig. 5, differential pressure measuring installation comprises: the probe 1, pressure transmission pipeline 18, the multiple-pass joint 17 that are used for measuring wind.
With reference to Fig. 3 and Fig. 4, the measuring wind speed probe is a principle of work of being measured hydrodynamic by Pitot tube, structure needs according to self-operated measuring unit in the stove design, 4 probes of the general use of each spout, the head of every probe has total head pressure sensing hole 5, the geometry that the side periphery has static pressure sensing hole 6, probe meets the requirement of national technical test rules JJG518-98 (Pitot tube), and the probe afterbody is equipped with two withstand voltage rapid-acting couplings 9, and total head and static pressure that probe records are exported.The sliding sleeve 7 at probe rear portion can make probe move axially and rotate along the guide rod axle center along guide rod 13, with satisfy different burner nozzles to probe spacing from requirement, and making probe total head pressure sensing hole 5 face airflow direction by angular adjustment, sliding sleeve 7 is fixing with guide rod 13 by jackscrew 8.The centre of guide rod is provided with sliding sleeve 15, and the connection that sliding sleeve 15 and support bar are 14 is identical with the connection between probe sliding sleeve 7 and the guide rod.All probes of whole Auto-Test System and differential pressure wireless transceiver 3 all are fixed on the support bar 14, support bar two is a pipe clamp 12, pipe clamp is fixed on support bar on the burner spout by jackscrew, being connected as Fig. 4 between probe 1, guide rod 13, differential pressure wireless transceiver 3, support bar 14 and the burner nozzle 6.With reference to Fig. 5, the requirement of layouting that probe positions is measured according to gridding method is arranged, the total head and the rapid-acting coupling on the static pressure efferent duct of probe afterbody are connected to corresponding multiple-pass joint 17 with pipeline, two multiple-pass joints are drawn a pressure tube respectively, and the differential pressure (dynamic pressure) after average is introduced differential pressure wireless transceiver 3.
The differential pressure wireless transceiver converts the differential pressure signal of multiple-pass joint input to the voltage signal of proportional relation with it by differential pressure transmitter, converts the digital quantity corresponding with differential pressure signal, input microprocessor to through A/D converter again.The electricity of battery output is reverse into the power supply of different electric pressures through power management module, supplies with differential pressure transmitter, A/D converter, microprocessor and wireless transceiver respectively.A/D converter is accepted the control of microprocessor, and regularly converting analog signals to digital quantity signal gives microprocessor; Wireless transceiver receives the order that the master control wireless transceiver is sent with wireless mode on the one hand, send microprocessor to, the data that microprocessor processes is crossed send to the master control wireless transceiver with wireless mode on the other hand, this device is subjected to the control of microprocessor, have dormancy and automatic arousal function, system can reduce its average power consumption greatly like this, for can long-term stable operation create advantage.
Microprocessor is the core component in the differential pressure wireless transceiver, except that control A/D converter, power management module and wireless transceiver, also has data processing, differentiates the functions such as order, transmission data and fault diagnosis that the master control wireless transceiver sends.The cycle of microprocessor acquired signal is t, and inside is provided with n data memory, and store data adopts the principle of first in first out, has so just guaranteed that the data in the data memory are always the last n * data of t in second.Microprocessor adopts and removes m maximal value when deal with data, removes m minimum value, (n-2m) individual value of being left is carried out arithmetic mean, in conjunction with first-in first-out, has so just realized Real-Time Filtering, both guarantee the real-time of data, improved antijamming capability again.
Each differential pressure wireless transceiver has independently address, the master control treating apparatus sends in the mode of broadcasting and uploads data command, contain address information in this order, all differential pressure wireless transceivers are all received this order, each differential pressure wireless transceiver is identical with oneself whether of the address in the sense command at first, if the address is identical, then data processed is issued the master control wireless transceiver by wireless transceiver, otherwise ignore this order.
The shell of each differential pressure wireless transceiver is provided with 1 pilot lamp, and after successfully receiving order at every turn and sending data, pilot lamp is once glittering.
With reference to Fig. 7, the master control treating apparatus comprises computing machine, communication interface, master control wireless transceiver.
The master control wireless transceiver adopts the technology similar to the differential pressure wireless transceiver, and is provided with communication interface, can accept the order of computer on the one hand, is transmitted to the differential pressure wireless transceiver with wireless mode; Can also send the data of uploading of the differential pressure wireless transceiver that receives to computing machine with wireless communication mode on the other hand, carry out data processing and export measurement result by computing machine.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100139400A CN100498341C (en) | 2004-01-15 | 2004-01-15 | Automatic test system for cold test of boiler and test method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100139400A CN100498341C (en) | 2004-01-15 | 2004-01-15 | Automatic test system for cold test of boiler and test method thereof |
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| CN1558204A CN1558204A (en) | 2004-12-29 |
| CN100498341C true CN100498341C (en) | 2009-06-10 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262166B (en) * | 2011-04-08 | 2013-01-09 | 内蒙古农业大学 | Wind-tunnel wind profiler and control method thereof |
| CN103941036B (en) * | 2014-05-09 | 2016-05-04 | 国家电网公司 | Be applicable to vent wind speed measuring system and the method for the test of coal burner cold conditions |
| CN104090122B (en) * | 2014-07-11 | 2017-02-15 | 国家电网公司 | Boiler direct-current burner outlet air speed external remote control and measuring system |
| CN105890866A (en) * | 2016-04-08 | 2016-08-24 | 国网天津市电力公司 | boiler cold state aerodynamic field out-of-furnace remote control measurement system |
| CN106017856A (en) * | 2016-05-24 | 2016-10-12 | 国网江西省电力科学研究院 | Online test method of cold-state test of boiler |
| CN106124158A (en) * | 2016-08-04 | 2016-11-16 | 河北省电力建设调整试验所 | A kind of boiler cold-state aerodynamic field self-operated measuring unit |
| CN107621327A (en) * | 2017-08-23 | 2018-01-23 | 山西省环境科学研究院 | A kind of full-automatic multipoint pressure measure device of pollution sources flue gas |
| CN110568214A (en) * | 2019-09-16 | 2019-12-13 | 国网河北省电力有限公司电力科学研究院 | Unmanned automatic acquisition device for wind speed of boiler cold power field |
| CN111579202B (en) * | 2020-05-29 | 2022-09-13 | 国网天津市电力公司电力科学研究院 | Integrated device for boiler cold state aerodynamic field test |
Citations (6)
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|---|---|---|---|---|
| JPS5953608A (en) | 1982-09-20 | 1984-03-28 | Nippon Steel Corp | Method for measuring flow speed of gas in blast furnace |
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| CN2690876Y (en) * | 2004-01-15 | 2005-04-06 | 徐州发电厂 | Automatic test system for boiler cold state test |
-
2004
- 2004-01-15 CN CNB2004100139400A patent/CN100498341C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953608A (en) | 1982-09-20 | 1984-03-28 | Nippon Steel Corp | Method for measuring flow speed of gas in blast furnace |
| CN2283258Y (en) * | 1997-03-21 | 1998-06-03 | 东南大学 | Internal air flow on-line monitor for primary and secondary air pipes of power station boiler |
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| CN2416506Y (en) * | 2000-04-19 | 2001-01-24 | 西安交通大学 | Differential pressure dynamic wind speed measuring apparatus |
| CN1336512A (en) * | 2000-08-01 | 2002-02-20 | 浙江大学 | Blast speed measuring and regulating system for blast pipe of directly blowing powder producing system |
| CN2690876Y (en) * | 2004-01-15 | 2005-04-06 | 徐州发电厂 | Automatic test system for boiler cold state test |
Non-Patent Citations (2)
| Title |
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