CN105911468A - Uniform accessing apparatus for onsite test parameters for waterpower set - Google Patents
Uniform accessing apparatus for onsite test parameters for waterpower set Download PDFInfo
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- CN105911468A CN105911468A CN201610278881.2A CN201610278881A CN105911468A CN 105911468 A CN105911468 A CN 105911468A CN 201610278881 A CN201610278881 A CN 201610278881A CN 105911468 A CN105911468 A CN 105911468A
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- toggle switch
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Abstract
The invention relates to a water power testing apparatus, more particularly, to a uniform accessing apparatus for onsite test parameters for a water power set. The apparatus comprises a transforming and switching circuit board equipped with redundant terminals. The redundant terminals are connected with various signal sources. Each redundant terminal comprises power supply stitches and conversion circuits wherein the power supply stitches are connected to a power supply dial switch and the power supply dial switch is connected to a power supply source. The conversion circuits are connected to a signal switching dial switch. The signal switching dial switch is connected to a 37-stitch uniform output interface. The 37-stitch uniform output interface is connected to a data acquiring device. According to the invention, within one signal accessing interface, different accessing modes, inputs and outputs of different signals, and the regulation of different signals are all done uniformly, which means less operational work, higher testing efficiency, and the signal channel switching and configuration for different sensors with different wiring modes, power supplies and outputs.
Description
Technical field
The present invention relates to a kind of water electric test device, specially Hydraulic Power Unit on-the-spot test parameter is uniformly accessed into device.
Background technology
Along with developing rapidly of modern measure technology and hydropower industry, the content of Hydraulic Power Unit on-the-spot test is more and more richer
Richness, it is also proposed higher requirement to on-the-spot test technology.Hydraulic Power Unit on-the-spot test object and parameter major part are all various
Physical values, such as temperature, distance, flow velocity, pressure etc., the signal that computer acquisition system to be converted them into can receive, such as
Voltage or electric current, need the conversion by sensor, and various sensor be in addition to necessary measurement requirement, as surface temperature measurement passes
Sensor needs test surfaces, dither to select acceleration vibrating sensor etc., different sensors also have different power supply,
Input and output requirement.
As a example by sensor conventional in Hydraulic Power Unit is tested, vibration displacement sensor generally uses-24V to power, wiring
Mode has 4 cores and two kinds of 3 cores, and signal is output as-18～-2V；The power supply mode of vibrating speed sensors has-24V to power, ±
12V powers, without powering three kinds, signal is output as 0～500mV；Acceleration transducer and noise transducer typically without power supply,
Direct voltage exports；Pressure transducer and differential pressure pickup are then that+24V powers, and 4～20mA outputs, the mode of connection is 2 cores.
If the sensor of these parameter measurements or conversion element can be designed a kind of unified signal input and output and connect
Mouthful so that same interface realizes most of sensor power of Hydraulic Power Unit test, inputs and export requirement, then can realize number
According to the flexible configuration of acquisition system and greatly simplifying of test parameter access, and when can save the installation configuration of on-the-spot test signal
Between, improve scene test efficiency and economy.
Currently in order to the access requirement of compatible different test parameter, having two kinds of different technical schemes, the first is direct
According to the requirement of different access parameters, change different test systems or test acquisition module.The second is that employing is single
Test acquisition module or system, utilize different access Converting terminals, differently configured power module, realize different parameters
Conversion and access.
Hydropower industry applies more commercial test instrument and monitoring device more, including America NI (National at present
Instruments) the cDAQ series of company, PXI series, cRIO series, HBM company of U.S. Liberty Acquisition Instrument, eDAQ gather
Equipment etc., what they used is according to different test parameters mostly, adjusts the hardware module of acquisition system, with satisfied survey
The access requirement of amount signal
As a example by the cDAQ test sample system of the American National Instrument Instruments company that test industry is commonly used, NI
CDAQ full name NI CompactDAQ, is a kind of for the sensor in workbench, measure field and production line and electronic, horological
Amount application provides USB or the data acquisition equipment of Ethernet interface plug and play characteristic.
CDAQ test sample system includes cabinet and test acquisition module, real by installing various acquisition module on cabinet
Existing Hydraulic Power Unit on-the-spot test task.
11 kinds of test acquisition modules, the input such as including simulation input, galvanic couple input, vibration and acceleration input are provided at present
Module.Following table gives the conventional cDAQ analog input module of adaptive different test parameter.
So for different analogue signal input modes, purchase the different acquisition module of installation and be attached, finally real
The connection of existing different types of input parameter.
As the commercial modularized hardware of technology maturation, by changing different cDAQ acquisition modules, can allow and gather system
The adaptive different measurement parameter of system, the advantage with flexible configuration, but there is also several obvious shortcoming simultaneously.
(1) equipment economy is the highest.Different measurement parameters and sensor, need buy and change different test collections
Module, such as 10 voltage signal measuring points, 1 current signal measuring point, it is necessary to purchase 1 32 passage voltage measurement module and
1 piece of single current measurement module, causes the waste of resource on every piece of acquisition module, the most uneconomical.
(2) mode of connection is difficult to adaptation.Although for the most different sensors, some can directly select connection and survey
Test acquisition module, but most of sensor also need to supply line connect, and portion of electrical current output sensor also need to
Acquisition module connects formation loop, the sensor of the modes of connection different to two cores, three cores and four cores etc., it is impossible to unified adaptation, still
So need before access, configure wiring and conversion.
From economic angle, what most of on-the-spot tests were purchased is all single test acquisition module, such as voltage acquisition mould
Block, then the input of electric current is then realized by the conversion of resistance loop.Generally voltage acquisition scope is ± 10V, for exceeding
The voltage measurement parameter of measurement scope, in addition it is also necessary to carry out dividing potential drop operation, to ensure that acquisition system can receive in range.
To using single test acquisition module or system, the most original mode, it is simply that utilize different access end of converts
Son, differently configured power module, realize conversion and the access of different parameters.
Although using the modes such as adhesive tape, terminal block, bread board and resistance welding can realize the access of unlike signal, but both increase
The big workload of testing ground, also brings bigger connection error probability, consumes on-the-spot test period, especially in the world
Changing today that Hydraulic Power Unit test event is increasing, this mode needs to expend the configuration of bigger joint connection in site and testing time,
Bring extra experimentation cost and empirical risk.Although the conversion products of different access device was provided both at home and abroad, but actual
Upper usual and respective collection product is bound, and cannot realize the access switching of multiple sensors.
Therefore, if the unified power supply of all the sensors can be realized, access and signal condition, then can not only optimization Test stream
Journey, raising test efficiency, and the test level of Hydropower Unit scene test can be greatly promoted.
Summary of the invention
For above-mentioned technical problem, what the present invention provided a kind of Hydraulic Power Unit on-the-spot test parameter is uniformly accessed into device, with
Solve the different problem of the different problem of the different sensors mode of connection, different sensors power demands and different sensors signal
Export different problems.
Concrete technical scheme is:
Hydraulic Power Unit on-the-spot test parameter be uniformly accessed into device, including conversion switching wiring board, described conversion switching
Redundancy binding post, redundancy binding post is had to be connected with each signal source on wiring board；Described redundancy binding post includes supplying
Acusector foot and conversion line, power pin is connected with power supply toggle switch, and described power supply toggle switch is connected with power supply；
Described conversion line is connected with signal switching toggle switch, and output interface unified by described signal switching toggle switch and 37 pins
Connecting, 37 described pins are unified output interface and are connected with data acquisition equipment.
Conversion switching wiring board, including single port line loop, single port line loop include J1 position toggle switch,
JP1 position toggle switch, CON2 two pin connector and CON3 tri-pin connector；J1 position toggle switch is dialled by resistance R33 and JP1 position
Code switch connects, and J1 position toggle switch passes through resistance R1 ground connection；JP1 position toggle switch passes through resistance R65 ground connection.
Redundancy binding post is 4 pin redundancy binding posts, be followed successively by the 1st pin be voltage just, the 2nd pin is voltage negative, the 3rd pin
For signal just, the 4th pin is ground connection.
The present invention provide Hydraulic Power Unit on-the-spot test parameter be uniformly accessed into device, beneficial effect:
(1) completeness.The different mode of connection, unlike signal input and output, different letter is realized in single Wiring port
The unification of number conditioning, and without additionally connecting electric supply installation, signal regulating device and connecting wire switching device.
(2) efficiency is high.It is not required to carry out line configuration at the scene, weld and change, directly uses the four pluggable terminals of core
Son connects, and greatly reduces field conduct work, improves test efficiency, reduces chance of makeing mistakes, to improve test accuracy.
(3) autgmentability.Can be by modes such as the extensions of toggle switch, such as serial capacitance, it is achieved the direct current filter of signal
The functions such as ripple, can meet the demand that follow-up more measurement parameters access.
The present invention provide Hydraulic Power Unit on-the-spot test parameter be uniformly accessed into device, for Hydraulic Power Unit field performance survey
Examination, in particular by hydraulic performance test and the engine performance test of nconventional method, as based on supercritical ultrasonics technology and thermodynamics
Efficiency test of turbine, efficiency test of generator based on calorimetry, generator parameter and the temperature rise tests etc. sent out, to the most of the same race
The sensor of class, different wiring, different power supply and different output realizes single channel switching and configuration.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is redundancy connection terminal structure schematic diagram；
Fig. 3 is the single port line loop of the present invention；
Fig. 4 is the multi-channel structure schematic diagram of embodiment；
Fig. 5 is the positive polarity output module of the power supply toggle switch of embodiment；
Fig. 6 is the voltage negative pole output module of the power supply toggle switch of embodiment；
Fig. 7 is one of 37 pins output interface definition unifying output interface of the present embodiment；
Fig. 8 is that the two of the output interface definition of output interface unified by 37 pins of the present embodiment.
Detailed description of the invention
The detailed description of the invention of the accompanying drawings present invention.
Hydraulic Power Unit on-the-spot test parameter be uniformly accessed into device, including conversion switching wiring board 2, described conversion switching
Redundancy binding post 1, redundancy binding post 1 is had to be connected with each signal source on wiring board 2；Described redundancy binding post 1 wraps
Including power pin and conversion line, power pin is connected with power supply toggle switch 3, described power supply toggle switch 3 and power supply electricity
Source 4 connects；Described conversion line is connected with signal switching toggle switch, and described signal switching toggle switch and 37 pins are unified
Output interface 5 connects, and 37 described pins are unified output interface 5 and are connected with data acquisition equipment.
Redundancy binding post 1 is the pluggable binding post of redundancy porous, and it is different with adaptation to design the definition of its each pin
The mode of connection, meets the different modes of connection of different sensors.
Redundancy binding post 1 adds power pin, and the toggle switch of modelled signal switching in the circuit board, it is achieved different
The switching of power demands, solves the problem that different sensors power demands is different.
Signal switching toggle switch on conversion switching wiring board 2 and conversion line thereof, it is achieved the unification of multi-signal
Output, solves the problem that the output of different sensors signal is different.
By being independently arranged of each passage, it is achieved in same interface, flexible configuration different measuring sensor and signal
Input, and reduce test connecting link and signal disturbing as far as possible.Data acquisition equipment generally can receive the electric current of certain scope
Or voltage signal, and electric current and voltage input can switch in the way of resistance conversion, the most from a cost perspective,
Here select the voltage acquisition module of range of receiving ± 10V, change all input test parameters with same collection requirement.
The present embodiment inputs three classes survey for adaptive direct voltage signal input, current signal input, on a large scale voltage signal
The requirement of examination parameter.
It is as follows that displacement transducer accesses requirement, generally can obtain top guide bearing, lower guide bearing, water pilot bearing and derivation axle
The radial displacement held, also can obtain frame vertical vibration or lift the mechanical test parameters such as machine amount:
Velocity sensor requires as follows, for Hydraulic Power Unit upper spider, lower bearing bracket, foundation ditch surface vibration, generally uses low
Frequently velocity sensor, output can be rate signal, it is also possible to is the displacement signal of output after sensor internal integration.
Pressure transducer generally obtains hydraulic measurement parameter, such as spiral case inlet and outlet pressure, pressure in draft tube, top cover pressure
Deng signal, to obtain the pulsation situation of hydraulic pressure.Sensor requirements is as follows:
| Measure parameter | Unit | Model | Power supply | Output area | Sensitivity | The mode of connection |
| Pressure | kPa | Keller21Y | 24V | 4～20mA | Range/16mA | N-3, export-1 |
Differential pressure pickup mainly obtains water levels of upstream and downstream, head and spiral case differential pressure measurement parameter, it is desirable to as follows:
| Measure parameter | Unit | Model | Power supply | Output area | Sensitivity | The mode of connection |
| Pressure reduction | kPa | Rosement | 24V | 4～20mA | Range/16mA | Positive and negative connect+,- |
Other parts are by from hydraulic power station monitoring and control system and the signal parameter of governing system, including electric parameter, regulation
The signals such as parameter, generally access with the current signal of 4～20mA, this mode using electric current to turn voltage is carried out conversion and connects.
In view of the test sensor used in Hydraulic Power Unit on-the-spot test scarcely connects more than 4 cores, therefore redundancy wiring
Terminal 1 uses 4 pin redundancy binding posts, as in figure 2 it is shown, access to realize the test parameter of the different mode of connection.
Owing to final argument input is unified for ± 10V voltage input, in redundancy binding post 14 pin, the 1st pin be voltage just,
2nd pin is voltage negative, the 3rd pin be signal just, the 4th pin is ground connection.Here do not have stop voltage size, therefore can be by electricity
Source toggle switch 3 Switching power inputs, the power demands of the different sensors such as satisfied ± 12V, ± 24V and-24V.
Redundancy binding post 1 can be fixed on one piece of standard panel, it is achieved multichannel integrated.
In order to meet multiple input demand, conversion switching wiring board 2 designs single port line loop such as Fig. 3, wherein J1
Toggle switch and JP1 position toggle switch, CON2 and CON3 is two pins and three pin connectors.Resistance R1 is 250 Ω precision resistances, real
Existing electric current and the conversion of voltage；Resistance R33 and resistance R65 is respectively the precision resistance of 5K and 1K, realizes input voltage range
Excessive dividing potential drop, changes ratio into 1/6.
It is integrated with multiple redundancy binding post 1 and 37 pin on conversion switching wiring board 2 simultaneously and unifies output interface 5, manifold
Road implementation is as shown in Figure 4.
Due to the adaptive multiple powering mode of needs, power supply toggle switch 3 is realized cutting of the multiple powering mode of same passage
Change.Design diagram is as shown in Figure 5 and Figure 6.
Switch short circuit voltage output end by power supply toggle switch 3, realize ± 24V power voltage supply ,+24V power supply supply
Four kinds of modes that electricity ,-24V power supply are powered and ± 12V power supply is powered.
Power supply 4 is the industrial power supply module of two pieces of standards 220V input, and one piece realizes 24V power voltage supply, i.e.+
The output of 24V power supply, the output of-24V power supply, other one block of realization ± 12V power supply is powered output.
Owing to all signalling channels have been converted into standard ± 10V voltage signal, and unification is 2 core interfaces the most, then may be used
To be directly accessed in the test acquisition module of single face, such as the 9205 voltage analog input modules of NI cDAQ, 37 pins are unified defeated
The output interface of outgoing interface 5 is defined as follows:
Wherein S1～S32 is the test parameter of 32 single-ended access passages, and GND is ground connection, and output interface 5 unified by 37 pins,
Realize the connection of all signals, connect definition and see figure 7 above and Fig. 8.
This four classes signal is directly connected to and changes by final realization.
By design of material and encapsulation, conversion switching wiring board 2 etc. may finally be integrated in industry suitcase, it is achieved
Portable and on-the-spot test processes.
Claims (3)
1. Hydraulic Power Unit on-the-spot test parameter be uniformly accessed into device, it is characterised in that: include conversion switching wiring board (2), institute
Redundancy binding post (1), redundancy binding post (1) is had to be connected with each signal source in conversion switching wiring board (2) stated；Described
Redundancy binding post (1) include power pin and conversion line, power pin is connected with power supply toggle switch (3), described
Power supply toggle switch (3) is connected with power supply (4)；Described conversion line is connected with signal switching toggle switch, described
Signal switching toggle switch and 37 pins are unified output interface (5) and are connected, and 37 described pins unify output interface (5) and data acquisition
Equipment connects.
Hydraulic Power Unit on-the-spot test parameter the most according to claim 1 be uniformly accessed into device, it is characterised in that: described
Conversion switching wiring board (2), including single port line loop, single port line loop includes J1 position toggle switch, JP1 position
Toggle switch, CON2 two pin connector and CON3 tri-pin connector；J1 position toggle switch is opened by resistance R33 and JP1 position dial-up
Closing and connect, J1 position toggle switch passes through resistance R1 ground connection；JP1 position toggle switch passes through resistance R65 ground connection.
Hydraulic Power Unit on-the-spot test parameter the most according to claim 1 and 2 be uniformly accessed into device, it is characterised in that: institute
The redundancy binding post (1) stated is 4 pin redundancy binding posts, be followed successively by the 1st pin be voltage just, the 2nd pin is voltage negative, the 3rd pin
For signal just, the 4th pin is ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278881.2A CN105911468A (en) | 2016-04-28 | 2016-04-28 | Uniform accessing apparatus for onsite test parameters for waterpower set |
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|---|---|---|---|
| CN201610278881.2A CN105911468A (en) | 2016-04-28 | 2016-04-28 | Uniform accessing apparatus for onsite test parameters for waterpower set |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589328A (en) * | 2017-09-29 | 2018-01-16 | 武汉华海通用电气有限公司 | A kind of power electronics equips plate level Redundant Test System |
| CN109375591A (en) * | 2018-09-30 | 2019-02-22 | 珠海市运泰利自动化设备有限公司 | A kind of whole line accuracy Design method of intelligence producing line |
| CN111060761A (en) * | 2019-12-12 | 2020-04-24 | 西安航天动力试验技术研究所 | Test simulation device, liquid rocket engine test system and test method |
| CN112098097A (en) * | 2020-08-20 | 2020-12-18 | 西安航天动力试验技术研究所 | High-reliability measuring system for simultaneously acquiring multiple types of parameters |
| CN113587969A (en) * | 2021-06-18 | 2021-11-02 | 大唐水电科学技术研究院有限公司 | Integrated sensor mounting and wiring method for hydroelectric generating set stability test |
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| CN107589328A (en) * | 2017-09-29 | 2018-01-16 | 武汉华海通用电气有限公司 | A kind of power electronics equips plate level Redundant Test System |
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| CN113587969A (en) * | 2021-06-18 | 2021-11-02 | 大唐水电科学技术研究院有限公司 | Integrated sensor mounting and wiring method for hydroelectric generating set stability test |
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