CN104614022A - Wind pressure and wind speed test device for ventilating system of large-sized water-turbine generator set - Google Patents
Wind pressure and wind speed test device for ventilating system of large-sized water-turbine generator set Download PDFInfo
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- CN104614022A CN104614022A CN201510095263.XA CN201510095263A CN104614022A CN 104614022 A CN104614022 A CN 104614022A CN 201510095263 A CN201510095263 A CN 201510095263A CN 104614022 A CN104614022 A CN 104614022A
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Abstract
The invention discloses a wind pressure and wind speed test device for a ventilating system of a large-sized water-turbine generator set. An open type PXI test measurement and control hardware platform building test control system with stable performance and reliable measurement is adopted; a probe arranged at a unit measurement point position is connected to a corresponding interface panel through a drainage tube; a tested small signal is amplified into a standard signal through an SMI piezoresistive micro pressure transducer and a signal conditioning amplification circuit, and the standard signal is connected to a data acquisition card of a PXI system; an upper computer controls measurement of all measurement point signals and caries out corresponding data processing. According to the wind pressure and wind speed test device, direct, reliable and accurate measurement on the wind speed and the wind pressure of all parts of the ventilating system of a water-turbine generator can be realized; the problems of giant system, massive interference sources and the like which are caused by switching test of an electromagnetic valve due to a large number of measurement points for a long time are solved, and the conditions of low interference resistance, low stability and low reliability of the system are improved. The wind pressure and wind speed test device has the advantages that all test parameters of a water-turbine generator ventilating test can be accurately acquired, so that optimal design of a ventilating structure and development of new products can be realized; meanwhile, on-line monitoring on a low-wind-pressure part of the ventilating system of the water-turbine generator can be possibly realized.
Description
Technical field
The present invention relates to a kind of Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation.
Background technology
Along with the increase of domestic unit capacity, large-sized water turbine generator is necessary quantitative test prototype ventilating system.One of the important content of hydrogenerator cooling system research that to take similar law as the ventilation model test of theoretical foundation be also is one of effective ways analyzing prototype ventilating system.Analyzed by model investigation, can verify that whether the design proposal of the draft type that this generator adopts is rationally reliable, and can be optimized ventilation cooling system and improve.In test, be that simulation test is successfully crucial to the wind speed of each region of interest, the true and reliable test of the physical quantity such as blast and air quantity.And the feature of hydrogenerator ventilation cooling system test to be test point can reach more than 100, blast is minimum can be high to Pa level, precision.The development of universal Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation is tested the low blast of multi-measuring point accurately and reliably for the ventilating system test of various version turbine-generator units and carries out, for the test guarantee that ventilating system of power set model and real machine test provide reliably automaticity high, change the error and uncertainty that adopt manual testing to bring in the past, along with the high development of computer system, the development of this proving installation have also been changed to be needed because measuring point to adopt solenoid valve switch test and the system brought is huge in the past, the problems such as interference source is many, and the anti-interference of system, stability, the situation that reliability is low, ventilating system Test integration degree stability and reliability automaticity will be made to increase substantially.
Summary of the invention
The invention provides the Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation of the low blast of a kind of multi-measuring point.The present invention is achieved by the following technical solutions: a kind of Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation, rack total power switch is arranged on the front panel upper left side of rack, after external 220V AC power, press rack total power switch and can be whole interior of equipment cabinet device and transmitter, 24V output linearity Power supply, static pressure test interface plate and survey wind speed differential pressure interface board are the external interfaces of multi-measuring point micro pressure and differential pressure transmitter plate, the snorkel that unit measuring point place probe is drawn is received on these two pieces of corresponding interface boards, the output line of multi-measuring point micro pressure and differential pressure transmitter plate is received on signal output terminal board, multi-measuring point micro pressure and the 24V direct current required for differential pressure transmitter plate are provided by signal output part daughter board by 24V output linearity power supply, the signal signal wire of each measuring point that signal output part daughter board is drawn is linked on each data collecting card of PXI system, display and industrial control computer composition upper computer control system, industrial control computer carries out the data acquisition of each measuring point by the multi-block data capture card of PXI-PCI Long-distance Control card control PXI system.
The present invention changes to be needed because measuring point to adopt solenoid valve switch test and the system brought is huge in the past, the problems such as interference source is many, and the anti-interference of system, stability, situation that reliability is low, ventilating system Test integration degree stability and reliability automaticity will be made to increase substantially.The SMI pressure resistance type micro-pressure transmitter adopted in the present invention and signal condition amplifying circuit, the original volume of the pressure difference transmitter that volume wide range is large and cost of adopting is reduced, changing multiple measuring point adopts a transmitter to switch the method for carrying out testing through air collector and solenoid valve, can realize point-to-point measurement.Eliminate when original solenoid valve switches the interference of system and impact.Achievement of the present invention contributes to each test parameter of Obtaining Accurate hydrogenerator ventilation experiment, carries out the optimal design of aeration structure and the exploitation of new product.
Accompanying drawing explanation
Fig. 1 is the mounting structure schematic diagram of the present invention at Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation
Embodiment
A kind of Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation as shown in Figure 1, rack total power switch 1 is arranged on the front panel upper left side of rack 2, after external 220V AC power, press rack total power switch 1 and can be whole interior of equipment cabinet device and transmitter, 24V output linearity power supply 8 is powered, static pressure test interface plate 9 and survey wind speed differential pressure interface board 10 are external interfaces of multi-measuring point micro pressure and differential pressure transmitter plate 6, the snorkel that unit measuring point place probe is drawn is received on these two pieces of corresponding interface boards, the output line of multi-measuring point micro pressure and differential pressure transmitter plate 6 is received on signal output terminal board 7, multi-measuring point micro pressure and the 24V direct current required for differential pressure transmitter plate 6 are provided by signal output part daughter board 7 by 24V output linearity power supply 8, the signal signal wire of each measuring point that signal output part daughter board 7 is drawn is linked on each data collecting card of PXI system 5, display 3 and industrial control computer 4 form upper computer control system, industrial control computer 4 carries out the data acquisition of each measuring point by the multi-block data capture card of PXI-PCI Long-distance Control card control PXI system 5.The open hardware platform that the measuring system that the present invention realizes have employed performance stably measured reliable PXI thermometrically and control in industrial process sets up test control system, the probe placed at unit measuring point place is received corresponding static pressure test interface plate 9 through drainage tube and is surveyed on wind speed differential pressure interface board 10, pressure interface on interface board is the pressure interface of SMI pressure resistance type micro-pressure transmitter, SMI pressure resistance type micro-pressure transmitter is arranged on multi-measuring point micro pressure and differential pressure transmitter plate 6, multi-measuring point micro pressure and differential pressure transmitter plate 6 there is the signal condition amplifying circuit of transmitter, the low level signal amplification of test is become standard signal, be linked on the polylith capture card of PXI system 5 through signal output part daughter board 7, PXI system 5 is furnished with the PXI-PCI card that the upper computer control system formed with display 3 and industrial control computer 4 carries out communication, the upper computer control system be made up of display 3 and industrial control computer 4 carries out the Survey control of each measuring point signal, and carry out corresponding data processing.
Present invention achieves and Measurement accuracy direct, reliable to the wind speed and pressure at each position of ventilation system of hydrogenerator, change and need because measuring point for a long time to adopt solenoid valve switch test and the system brought is huge more, the problems such as interference source is many, and the anti-interference of system, stability, situation that reliability is low.Achievement of the present invention contributes to each test parameter of Obtaining Accurate hydrogenerator ventilation experiment, carries out the optimal design of aeration structure and the exploitation of new product, meanwhile, also makes the on-line monitoring of the low blast part of ventilation system of hydrogenerator become possibility.
Claims (1)
1. a Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation, it is characterized in that: rack total power switch (1) is arranged on the front panel upper left side of rack (2), after external 220V AC power, press rack total power switch (1), for whole interior of equipment cabinet device and transmitter, 24V output linearity power supply (8) is powered, static pressure test interface plate (9) and survey wind speed differential pressure interface board (10) are the external interfaces of multi-measuring point micro pressure and differential pressure transmitter plate (6), the snorkel that unit measuring point place probe is drawn is received static pressure test interface plate (9) and is surveyed on the corresponding interface board of wind speed differential pressure interface board (10), the output line of multi-measuring point micro pressure and differential pressure transmitter plate (6) is received on signal output terminal board (7), multi-measuring point micro pressure and the 24V direct current required for differential pressure transmitter plate (6) are provided by signal output part daughter board (7) by 24V output linearity power supply (8), the signal signal wire of each measuring point that signal output part daughter board (7) is drawn is linked on each data collecting card of PXI system (5), display (3) and industrial control computer (4) composition upper computer control system, industrial control computer (4) carries out the data acquisition of each measuring point by the multi-block data capture card of PXI-PCI Long-distance Control card control PXI system (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095263.XA CN104614022A (en) | 2015-03-04 | 2015-03-04 | Wind pressure and wind speed test device for ventilating system of large-sized water-turbine generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095263.XA CN104614022A (en) | 2015-03-04 | 2015-03-04 | Wind pressure and wind speed test device for ventilating system of large-sized water-turbine generator set |
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| Publication Number | Publication Date |
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| CN104614022A true CN104614022A (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510095263.XA Pending CN104614022A (en) | 2015-03-04 | 2015-03-04 | Wind pressure and wind speed test device for ventilating system of large-sized water-turbine generator set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258964A (en) * | 2015-11-02 | 2016-01-20 | 哈尔滨电机厂有限责任公司 | Ventilation simulated test system of large-scale water turbine generator set |
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| US7242590B1 (en) * | 2006-03-15 | 2007-07-10 | Agilent Technologies, Inc. | Electronic instrument system with multiple-configuration instrument modules |
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| CN202074993U (en) * | 2011-05-27 | 2011-12-14 | 西安陕鼓动力股份有限公司 | Module performance testing apparatus used for laboratory exploitation in blower fan industry |
| CN203422642U (en) * | 2013-05-31 | 2014-02-05 | 陕西海泰电子有限责任公司 | Multichannel dynamic signal acquisition card based on PXI bus |
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2015
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Patent Citations (4)
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| US7242590B1 (en) * | 2006-03-15 | 2007-07-10 | Agilent Technologies, Inc. | Electronic instrument system with multiple-configuration instrument modules |
| CN102053017A (en) * | 2009-11-09 | 2011-05-11 | 沈阳黎明航空发动机(集团)有限责任公司 | Method and system for testing air flow field of indoor engine test-bed |
| CN202074993U (en) * | 2011-05-27 | 2011-12-14 | 西安陕鼓动力股份有限公司 | Module performance testing apparatus used for laboratory exploitation in blower fan industry |
| CN203422642U (en) * | 2013-05-31 | 2014-02-05 | 陕西海泰电子有限责任公司 | Multichannel dynamic signal acquisition card based on PXI bus |
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| CN105258964A (en) * | 2015-11-02 | 2016-01-20 | 哈尔滨电机厂有限责任公司 | Ventilation simulated test system of large-scale water turbine generator set |
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Application publication date: 20150513 |