CN105136200A - Universal wind pressure and wind speed testing device for large water turbine generator set ventilation system - Google Patents
Universal wind pressure and wind speed testing device for large water turbine generator set ventilation system Download PDFInfo
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- CN105136200A CN105136200A CN201510511330.1A CN201510511330A CN105136200A CN 105136200 A CN105136200 A CN 105136200A CN 201510511330 A CN201510511330 A CN 201510511330A CN 105136200 A CN105136200 A CN 105136200A
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Abstract
The invention discloses a universal wind pressure and wind speed testing device for a large water turbine generator set ventilation system. The universal wind pressure and wind speed testing device for a large water turbine generator set ventilation system utilizes a PXI (PCI extensions for Instrumentation) test and measurement and control open type hardware platform establishing test control system with stable performance and reliable measurement, and enables the control system to be connected with a corresponding interface board through a gas pathway established by means of a drainage tube from the test point of the generator set; a small signal for test is amplified into a standard signal, and the amplified signal accesses a relay card of the PXI system and is switched to a data collection card through a piezoresistance micro-pressure transmitter and a signal conditioning amplification circuit; and a host computer controls measurement of the signals for each test point and performs the corresponding data processing. The universal wind pressure and wind speed testing device for a large water turbine generator set ventilation system realizes direct, reliable and accurate measurement of the wind speed and the wind pressure of each part of the water turbine generator set ventilation system, and solves the problems that as a plurality of test points exist, a gas collection solenoid valve switching test is required so that the system is too large and many interference source exist for a long time.
Description
Technical field
The present invention relates to a kind of universal 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, along with the high development of computer system in the past.
Summary of the invention
The invention provides a kind of elimination when original solenoid valve switches the interference of system and the universal Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation of impact.The present invention is achieved by the following technical solutions: a kind of universal Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation, rack total power switch (1) is arranged on the front panel upper left side of rack (2), external 220V AC power, rack total power switch (1) and whole interior of equipment cabinet device and transmitter, 24V output linearity power supply (8) electrical connection controls the break-make of each several part power supply in rack, the external interface that static pressure test interface plate (9) and survey wind speed differential pressure interface board (10) are transmitter plate (6), transmitter plate (6) is provided with the pressure resistance type micro-pressure sensor identical with wind speed measure-point amount with static pressure and signal conditioning circuit thereof, the each measuring point surveyed static pressure from unit and survey wind speed is set up with silicone tube respectively and is transferred to transmitter plate (6) after corresponding static pressure test interface plate (9) and survey wind speed differential pressure interface board (10) are received in gas passage and forms gas passage, the change of this non-electric charge quantity signalling of pressure resistance type micro-pressure sensor energy perception gaseous tension is also exported by the standard electric signal that modulate circuit conditioning converts the 4-20mA of standard to, the output terminal each point of transmitter plate (6) is received in signal output terminal board (7) respective terminal by lead-in wire, convenient test signal access carries out signal measurement into PXI system (5), 24V direct current required for transmitter plate (6) is provided by the switching of signal output part daughter board (7) respective terminal by 24V output linearity power supply (8), the signal lead-in wire of each measuring point that signal output part daughter board (7) is drawn is linked into PXI (PXI (PCIextensionsforInstrumentation, PCI towards instrument system expands)) in the corresponding contacts of the relay card of system (5), due to PXI system (5) capture card test channel Limited Number, therefore the whole measuring point signals accessed carry out a measurement entering to have more through PXI system (5) relay card and distribute the signals collecting of carrying out all measuring points, the output of relay card is received on each data collecting card of PXI system (5) by lead-in wire, industrial control computer (4) is worked by the relay card of Long-distance Control card control PXI system (5) and multi-block data capture card, different test loops is connected by the switching of relay, carry out the data acquisition of all measuring points, display (3) is electrically connected with industrial control computer (4), display data acquisition.
In the past in Large Hydroelectric Set ventilating system wind pressure and wind speed test process because measuring point quantity reaches 100 multiple spots, a large amount of pressure and differential pressure transmitter and measuring point cannot be adopted to carry out man-to-man measurement, and need gas collection in the air collector entering to have more with certain volume, divide into groups to switch by the host computer control solenoid valve identical with measuring point quantity and connect the collection that all measuring point signals are circulated to carry out in wherein a few road, System's composition is huge, interference source is many, solenoid valve causes the problems such as great electromagnetic interference (EMI) when switching especially, and the anti-interference of system, stability, the situations such as the situation that reliability is low, therefore need to improve method of testing to increase substantially ventilating system Test integration degree stability and reliability automaticity.The 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 universal Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation front panel
Fig. 2 is the mounting structure schematic diagram of the present invention in universal Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation inside
Fig. 3 is the schematic diagram of the present invention at universal Large Hydroelectric Set ventilating system wind pressure and wind speed proving installation
Embodiment
The universal Large Hydroelectric Set ventilating system of one as shown in Figure 1 wind pressure and wind speed proving installation, rack total power switch 1 is arranged on the front panel upper left side of rack 2, external 220V AC power, rack total power switch 1 and whole interior of equipment cabinet device and transmitter, the electrical connection of 24V output linearity power supply 8 controls the break-make of each several part power supply in rack, static pressure test interface plate 9 and survey wind speed differential pressure interface board 10 are external interfaces of transmitter plate 6, transmitter plate 6 is provided with the pressure resistance type micro-pressure sensor identical with wind speed measure-point amount with static pressure and signal conditioning circuit thereof, as shown in Figure 2, the each measuring point surveyed static pressure from unit and survey wind speed is set up with silicone tube respectively and is transferred to transmitter plate 6 after gas passage is received corresponding static pressure test interface plate 9 and surveyed wind speed differential pressure interface board 10 and forms gas passage, the change of this non-electric charge quantity signalling of pressure resistance type micro-pressure sensor energy perception gaseous tension is also exported by the standard electric signal that modulate circuit conditioning converts the 4-20mA of standard to, the output terminal each point of transmitter plate 6 is received in signal output terminal board 7 respective terminal by lead-in wire, convenient test signal access carries out signal measurement into PXI system 5, 24V direct current required for transmitter plate 6 is provided by the switching of signal output part daughter board 7 respective terminal by 24V output linearity power supply 8, the signal lead-in wire of each measuring point that signal output part daughter board 7 is drawn is linked in the corresponding contacts of relay card of PXI system 5, due to PXI system 5 capture card test channel Limited Number, therefore the whole measuring point signals accessed carry out a measurement entering to have more through PXI system 5 relay card and distribute the signals collecting of carrying out all measuring points, the output of relay card is received on each data collecting card of PXI system 5 by lead-in wire, industrial control computer 4 is worked by the relay card of Long-distance Control card control PXI system 5 and multi-block data capture card, different test loops is connected by the switching of relay, carry out the data acquisition of all measuring points, display 3 is electrically connected with industrial control computer 4, display data acquisition.
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 to adopt air collector, solenoid valve switch test and the system brought is huge more for a long time because measuring point, 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 universal 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), external 220V AC power, rack total power switch (1) and whole interior of equipment cabinet device and transmitter, 24V output linearity power supply (8) electrical connection controls the break-make of each several part power supply in rack, the external interface that static pressure test interface plate (9) and survey wind speed differential pressure interface board (10) are transmitter plate (6), transmitter plate (6) is provided with the pressure resistance type micro-pressure sensor identical with wind speed measure-point amount with static pressure and signal conditioning circuit thereof, the each measuring point surveyed static pressure from unit and survey wind speed is set up with silicone tube respectively and is transferred to transmitter plate (6) after corresponding static pressure test interface plate (9) and survey wind speed differential pressure interface board (10) are received in gas passage and forms gas passage, the change of this non-electric charge quantity signalling of pressure resistance type micro-pressure sensor energy perception gaseous tension is also exported by the standard electric signal that modulate circuit conditioning converts the 4-20mA of standard to, the output terminal each point of transmitter plate (6) is received in signal output terminal board (7) respective terminal by lead-in wire, convenient test signal access carries out signal measurement into PXI system (5), 24V direct current required for transmitter plate (6) is provided by the switching of signal output part daughter board (7) respective terminal by 24V output linearity power supply (8), the signal lead-in wire of each measuring point that signal output part daughter board (7) is drawn is linked into PXI (PXI (PCIextensionsforInstrumentation, PCI towards instrument system expands)) in the corresponding contacts of the relay card of system (5), due to PXI system (5) capture card test channel Limited Number, therefore the whole measuring point signals accessed carry out a measurement entering to have more through PXI system (5) relay card and distribute the signals collecting of carrying out all measuring points, the output of relay card is received on each data collecting card of PXI system (5) by lead-in wire, industrial control computer (4) is worked by the relay card of Long-distance Control card control PXI system (5) and multi-block data capture card, different test loops is connected by the switching of relay, carry out the data acquisition of all measuring points, display (3) is electrically connected with industrial control computer (4), display data acquisition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511330.1A CN105136200A (en) | 2015-08-19 | 2015-08-19 | Universal wind pressure and wind speed testing device for large water turbine generator set ventilation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511330.1A CN105136200A (en) | 2015-08-19 | 2015-08-19 | Universal wind pressure and wind speed testing device for large water turbine generator set ventilation system |
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| CN105136200A true CN105136200A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510511330.1A Pending CN105136200A (en) | 2015-08-19 | 2015-08-19 | Universal wind pressure and wind speed testing device for large water turbine generator set ventilation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409852A (en) * | 2020-04-12 | 2020-07-14 | 中国飞机强度研究所 | Direct-current voltage-stabilized power supply device for airplane structural strength test |
| CN114813031A (en) * | 2022-07-01 | 2022-07-29 | 中国航空工业集团公司沈阳空气动力研究所 | Wide-range high-precision pressure measuring device and method for wind tunnel test |
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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 |
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2015
- 2015-08-19 CN CN201510511330.1A patent/CN105136200A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (2)
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| 孙凯等: "基于 PXI 总线的通风模型试验台测控***", 《防爆电机》 * |
| 钱锋: "溪洛渡 770MW 水轮发电机通风模型试验研究测试技术", 《东方电气评论》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409852A (en) * | 2020-04-12 | 2020-07-14 | 中国飞机强度研究所 | Direct-current voltage-stabilized power supply device for airplane structural strength test |
| CN114813031A (en) * | 2022-07-01 | 2022-07-29 | 中国航空工业集团公司沈阳空气动力研究所 | Wide-range high-precision pressure measuring device and method for wind tunnel test |
| CN114813031B (en) * | 2022-07-01 | 2022-09-30 | 中国航空工业集团公司沈阳空气动力研究所 | Wide-range high-precision pressure measuring device and method for wind tunnel test |
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