CN207923369U - The differential humidity leak-detecting device of double water innercooling electric generator - Google Patents
The differential humidity leak-detecting device of double water innercooling electric generator Download PDFInfo
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- CN207923369U CN207923369U CN201820069161.XU CN201820069161U CN207923369U CN 207923369 U CN207923369 U CN 207923369U CN 201820069161 U CN201820069161 U CN 201820069161U CN 207923369 U CN207923369 U CN 207923369U
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Abstract
The utility model provides the differential humidity leak-detecting device of double water innercooling electric generator, including：Input module, aerial temperature and humidity measured value and the outer aerial temperature and humidity measured value of machine in the machine for obtaining double water innercooling electric generator；Processing module connects input module, for according to preset algorithm by humidity measurements outside humidity measurements in the machine under different temperatures measured value and machine be scaled it is synthermal under machine in absolute humidity values outside absolute humidity values and machine；Further, judge whether the difference in machine between absolute humidity values and the outer absolute humidity values of machine exceeds default value range；If so, output alarm signal；Alarm module, connection processing module, the water leakage alarm for carrying out double water innercooling electric generator according to alarm signal prompt.The utility model is of simple structure and low cost, can improve differentiate generator whether the accuracy of leak, to reduce the false alarm probability of the differential leakage detection apparatus of conventional moisture.
Description
Technical field
The utility model is related to aerothermodynamics fields, more particularly to the differential humidity leak detection dress of double water innercooling electric generator
It sets.
Background technology
If double water innercooling electric generator can be repaired in micro leak just by timely discovery, in time shutdown in a couple of days,
Otherwise, once leak expands the major accident that may result in generator scaling loss, and the repair time is usually more than one month, a whole set of machine
Stove, which is accompanied, to stop, and loss is more than often millions of members.Although the manufacturing process continuously improved makes leak probability be greatly reduced, existing
Double water innercooling electric generator still need to fill sensitive reliable water leakage alarm device.If the old unit of the power plant that put into operation without improvement,
Leak probability is larger, should more choose to install rapidly.
State Power Corporation's publication of in September, 2000《25 emphasis are counter to arrange》The 11.3.3.2 articles proposition " choose to install
Sensitive reliable water leakage alarm device ".
Electric industry retirement Shao professor of engineering creates SCJ-1 type humidity differential leak detectors within 1989, main
Operation principle is：It the absolute humidity of air and makes comparisons outside with machine in measuring machine simultaneously, because double water innercooling electric generator is not stringent
Sealing, there is gas leakage.When water-tight, absolute humidity is answered equal inside and outside machine.When there is leak in machine, the absolute humidity in machine must be high
In absolute humidity outside machine, leak is bigger, and the absolute humidity difference inside and outside machine is bigger, can exclude the outer humidity variation of machine in this way
It influences, and very sensitive.Meanwhile from the variation of absolute humidity difference it can also be seen that the trend that leak changes.This is pioneering
Differential humidity leak-hunting principle is very concise and readily understood inside and outside machine.SCJ-1 types humidity differential leak detector obtained country in 1989
Patent Office authorizes utility model patent, and notification number is：CN2073586.
Patent CN2073586 uses gas sample heat exchanger, and the humidity of gas sample inside and outside machine is made to be compared at the same temperature,
Namely gas sample in machine is blown to be placed in the 11/4 " coating steel pipe in cold wind (air inlet) road and is passed through, gas sample is made to be cooled to close to cold
Air temperature is then delivered to relative humidity sensor in machine, then gas sample outside machine is blown to by micro-blower and is placed on generator thermal
In the steel pipe in wind (outlet air) road, gas sample is made to be raised to close to hot blast temperature, then blown to again identical another with gas sample position in machine
In steel pipe, the outer gas sample of machine is made to drop to close to the temperature as gas sample in machine, the relative humidity sensor being then sent through outside machine, then adjust
The air bleeding valve for saving two gas samples, makes gas sample change in flow, makes the temperature of two gas samples close to just the same.At this point, two can be used
The relative humidity difference of gas sample replaces absolute humidity difference, and two gas samples are after a temperature is debugged, substantially not by load variations
It influences, it is stated that long-time service is stablized constant.
However, patent CN2073586 cannot carry out the conversion of absolute humidity, relative humidity, cannot carry out humidity temperature,
The intelligent compensation of pressure, wind speed.In addition to this, in order to realize that the comparativity of inside and outside two humidity, patent CN2073586 must match
The complicated gases such as set installation air blower, regulating valve pipeline pre-process mechanism --- heat exchanger so that two of different temperatures
Gas carries out heat exchange, and adjusting to wait for could work normally and compare when inside and outside two temperature are identical.Once two temperature
There is deviation, humidity certainty deviation, it will false alarm in adjusting.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide the wet of double water innercooling electric generator
The problems such as spending differential leakage detection apparatus, being used to solve complicated differential humidity leak-detecting device in the prior art, function limitation.
In order to achieve the above objects and other related objects, the utility model provides a kind of psychrometric difference of double water innercooling electric generator
Dynamic leakage detection apparatus, including：Input module, aerial temperature and humidity measured value in the machine for obtaining double water innercooling electric generator, Yi Jiji
Outer aerial temperature and humidity measured value；Processing module connects the input module, is used for humidity in the machine under different temperatures measured value
The outer humidity measurements of measured value and machine are scaled in synthermal lower machine absolute humidity values and machine absolute humidity values outside；Further,
Judge whether the difference in the machine between absolute humidity values and the outer absolute humidity values of the machine exceeds default value range；If
It is, then output alarm signal；Alarm module connects the processing module, for carrying out double water according to the alarm signal
The water leakage alarm of internal cooling generator prompts.
In one embodiment of the utility model, the input module is additionally operable to：Obtain the machine of the double water innercooling electric generator
Inner air pressure measured value is surveyed with air measuring wind speed value in the outer air pressure measurement of machine, and/or machine with the outer air wind speed of machine
Magnitude；The processing module is additionally operable to：It will be wet in the machine under different temperatures measured value, pressure measuring value, and/or measuring wind speed value
Degree measured value and the outer humidity measurements of machine be scaled it is synthermal, with pressure, and/or with absolute humidity values and machine in the machine under wind speed
Outer absolute humidity values.
In one embodiment of the utility model, described device further includes：Transmission module connects the processing module, is used for
It is sent out the digital quantity of the processing module output.
In one embodiment of the utility model, the transmission module includes：D/A conversion modules, by the processing module
The digital quantity of output is exported after being converted into analog quantity.
In one embodiment of the utility model, electrical isolation between the transmission module and the processing module.
In one embodiment of the utility model, described device further includes：The memory module that is connect with the processing module is seen
Door dog module, serial communication module, and/or human-computer interaction module；Wherein, the serial communication module, for obtain with it is described
The control instruction of the terminal device of device communication connection, and send response message to the terminal device；The human-computer interaction mould
Block shows corresponding parameter information for being inputted according to user.
In one embodiment of the utility model, the input module includes：Analog signal input module, and/or number letter
Number input module.
In one embodiment of the utility model, the analog signal input module includes：A/D conversion modules；The number
Signal input module includes：Field Bus Transceiver or communication bus.
In one embodiment of the utility model, the processing module includes：Embedded microcomputer or FPGA system.
In one embodiment of the utility model, the alarm module includes：Light alarm module, and/or acoustic alarm module.
As described above, the differential humidity leak-detecting device of the double water innercooling electric generator of the utility model, has below beneficial to effect
Fruit：
1) conversion between relative humidity and absolute humidity can be carried out, high-precision temperature, pressure can be carried out to humidity
Power, wind speed intelligent compensation more can differentiate really and accurately the micro- leak of generator, differential to substantially reduce conventional moisture
The false alarm probability of leakage detection apparatus, improves equipment dependability；
2) eliminate equality of temperature, with pressure, with wind speed mechanical adjusting mechanism and in order to adjust equality of temperature, with pressure, with wind speed and
The complex mechanisms such as mating air blower, regulating valve and all kinds of pipelines, have saved social resources and energy consumption；
3) it is not necessarily to accurately match humidity sensor, eliminates matching process cumbersome in production processing, side
Just client replaces single sensor of damage at any time, without that mating must replace two because damaging one.(traditional measurement method
Middle damage one must then be replaced for two simultaneously, because they must match each other)
Description of the drawings
Fig. 1 is the structural representation of the differential humidity leak-detecting device of the double water innercooling electric generator in one embodiment of the utility model
Figure.
Fig. 2A is the structure of the differential humidity leak-detecting device of the double water innercooling electric generator in another embodiment of the utility model
Schematic diagram.
Fig. 2 B are the structure of the differential humidity leak-detecting device of the double water innercooling electric generator in another embodiment of the utility model
Schematic diagram.
Fig. 3 is shown as the appearance diagram of the humidity differential leak detector in one embodiment of the utility model.
Specific implementation mode
Illustrate that the embodiment of the utility model, those skilled in the art can be by this theorys below by way of specific specific example
Content disclosed by bright book understands other advantages and effect of the utility model easily.The utility model can also be by addition
Different specific implementation modes are embodied or practiced, and the various details in this specification can also be based on different viewpoints and answer
With carrying out various modifications or alterations under the spirit without departing from the utility model.It should be noted that the case where not conflicting
Under, the feature in following embodiment and embodiment can be combined with each other.
It should be noted that the diagram provided in following embodiment only illustrates the basic of the utility model in a schematic way
Conception, component count, shape when only display is with related component in the utility model rather than according to actual implementation in schema then
And size is drawn, when actual implementation kenel, quantity and the ratio of each component can be a kind of random change, and its assembly layout
Kenel may also be increasingly complex.
Referring to Fig. 1, complicated for the disappointing leakage detection apparatus of humidity in the prior art, can not carry out relative humidity with absolutely
The problem of to the conversion of humidity, the present embodiment provides a kind of differential humidity leak-detecting devices 100 of double water innercooling electric generator, to more
Add accurately differentiate generator whether leak, reduce the differential leakage detection apparatus of conventional moisture false alarm probability.
The differential humidity leak-detecting device 100 of the double water innercooling electric generator of the present embodiment is used as a kind of hardware device, main
Structure includes：Input module 101, processing module 102, alarm module 103, still further comprise：Transmission module, memory module,
Watchdog module, serial communication module, and/or human-computer interaction module.
Refering to Fig. 2A and Fig. 2 B, analog signal input module may be used in input module (sensors such as humidity are analog)
Or digital signal input module (sensors such as humidity are digital), wherein analog signal input module such as A/D moduluss of conversion
Block, digital signal input module is for example：Field Bus Transceiver, iic bus, spi bus or other communication buses.Processing module
Embedded microcomputer or FPGA system may be used.Sound, light type of alarm may be used in alarm module.Transmission module need to be with place
Modular electrical isolation is managed, D/A conversion modules, such as 4~20mA circuits, the number that the processing module is exported can be used
Amount is converted at least being exported after 4~20mA analog signals all the way, to facilitate DCS (Distributed Control
System, dcs) etc. other systems use.EEPROM (Electrically may be used in memory module
Erasable Programmable read only memory, Electrically Erasable Programmable Read-Only Memory) etc..Serial communication module
RS485 communication systems may be used, to provide Modbus, Profibus communication protocol so that the other systems such as DCS use.People
Light beam and charactron may be used in the display portion of machine interactive module, and physical keyboard may be used in importation, certainly, man-machine friendship
Mutual module directly using collection display and can also be input into integrated touch screen etc..
Refering to schematic diagram shown in Fig. 2A and Fig. 2 B, first, A/D conversion or data communication method receive simultaneously measurement two
The information such as temperature, humidity (measured value is relative humidity), wind speed, pressure of the outer sample gas of machine in a machine；Then, CPU will be by that will have
Related parameter brings a carat Bai Long-carat into and repaiies this formula, and combines National Standard of the People's Republic of China-humidity measuring method
It is saturated vapour pressure in (GB/T 11605-2005) annex and relevant parameter table carries out accurate absolute humidity conversion, not by two
Sample gas under synthermal, different pressures, different wind speed is scaled the absolute humidity under the same temperature, pressure and wind speed；Then,
Intelligent measure alarm is carried out according to the difference of two absolute humidity, such as：It is absolute outside absolute humidity values and the machine in the machine
If the difference between humidity value is less than the lower limit of the default value range, the too low alarm of humidity is carried out；If the difference
More than reaching the standard grade for the default value range, then the excessively high alarm of humidity is carried out.For how to distinguish the too low alarm of humidity with
And the alarm that humidity is excessively high, those skilled in the art can be realized by the way that different alarm presentation modes is arranged, no longer in this
It is developed in details.
It is worth noting that the wind speed, pressure input parameter in above-described embodiment are apolegamy parameter, if scene does not have wind
Then the present apparatus will not carry out wind speed, pressure compensation for speed, pressure input parameter.For wind speed, pressure compensated embodiment is added,
Its conversion accuracy undoubtedly can be more more excellent than the scheme being not added with, counting accuracy also higher.
Especially, it should be noted that conversion work(of the relative humidity that processing module is realized in the present embodiment to absolute humidity
Can, and the function of exporting alarm according to the comparison result of the difference of absolute humidity and default value range is all existing
Have, in other words, the hardware device that the present embodiment is provided can coordinate the software program of the prior art to use, but this reality
Example is applied completely without reference to the improvement in terms of software technology.
Fig. 3 shows that a kind of appearance diagram of humidity differential leak detector, the humidity differential leak detector can be based on above-mentioned
Hardware device come realize double water innercooling electric generator differential humidity leak detection.
It is provided with input keyboard on the control panel of the humidity differential leak detector and (debugs button, ACK button, clearing up and down
Button etc.), output screen (light beam and charactron), and for indicate output information type indicator light (interior temperature, outer temperature,
Interior wet, exogenous damp, internal pressure, external pressure, wet difference etc., AL1 and AL2 indicate that the measured value of equipment input is analog or digital respectively).
User is the information type that may be selected to want to know by the button of debugging up and down for inputting keyboard, then by inputting on keyboard really
Recognize button and send instruction to humidity differential leak detector, light beam charactron can be shown in after transferring corresponding data.
In conclusion the utility model can be according to existing algorithm to two gas sample measured values carry out intelligence in machine and outside machine
Compensation is calculated, the sample gas under two different temperatures, different pressures, different wind speed is scaled the same temperature, pressure and wind speed
Under absolute humidity, and according to the difference of absolute humidity carry out intelligent alarm prompt.The utility model is not in machine and two outside machine
The form of a gas sample measured value is limited, and can be analog quantity can also be digital quantity.The utility model is simple in structure, at
This is cheap, can carry out the conversion between relative humidity and absolute humidity, humidity can be carried out high-precision temperature, pressure,
Wind speed intelligent compensation more can differentiate really and accurately the micro- leak of generator, to substantially reduce the differential inspection of conventional moisture
The false alarm probability of leakage device, improves equipment dependability, effectively overcomes various shortcoming in the prior art and has height and produce
Industry utility value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications completed under refreshing and technological thought or change, should be covered by the claim of the utility model.
Claims (10)
1. a kind of differential humidity leak-detecting device of double water innercooling electric generator, which is characterized in that including：
Input module, aerial temperature and humidity measured value and the outer aerial temperature and humidity of machine in the machine for obtaining double water innercooling electric generator
Measured value；
Processing module connects the input module, is used for humidity measurements in the machine under different temperatures measured value and machine exogenous damp
Degree measured value is scaled in synthermal lower machine absolute humidity values and machine absolute humidity values outside；Further, judge in the machine absolutely
Whether the difference between absolute humidity values outside humidity value and the machine exceeds default value range；If so, output alarm signal
Number；
Alarm module connects the processing module, the leakage for carrying out the double water innercooling electric generator according to the alarm signal
Water alarm.
2. the apparatus according to claim 1, which is characterized in that
The input module is additionally operable to：Obtain machine inner air pressure measured value and the air pressure of machine outer space of the double water innercooling electric generator
Air measuring wind speed value and the outer air measuring wind speed value of machine in power measured value, and/or machine；
The processing module is additionally operable to：It will be wet in the machine under different temperatures measured value, pressure measuring value, and/or measuring wind speed value
Degree measured value and the outer humidity measurements of machine be scaled it is synthermal, with pressure, and/or with absolute humidity values and machine in the machine under wind speed
Outer absolute humidity values.
3. the apparatus according to claim 1, which is characterized in that further include：Transmission module connects the processing module, uses
In the digital quantity for being sent out the processing module output.
4. device according to claim 3, which is characterized in that the transmission module includes：D/A conversion modules, by institute
It states after the digital quantity that processing module exports is converted into analog quantity and is exported.
5. device according to claim 3, which is characterized in that between the transmission module and the processing module electrically every
From.
6. the apparatus according to claim 1, which is characterized in that further include：The memory module that is connect with the processing module,
Watchdog module, serial communication module, and/or human-computer interaction module；Wherein,
The serial communication module, the control instruction for obtaining the terminal device communicated to connect with described device, and to described
Terminal device sends response message；
The human-computer interaction module shows corresponding parameter information for being inputted according to user.
7. the apparatus according to claim 1, which is characterized in that the input module includes：Analog signal input module,
And/or digital signal input module.
8. device according to claim 7, which is characterized in that the analog signal input module includes：A/D moduluss of conversion
Block；The digital signal input module includes：Field Bus Transceiver or communication bus.
9. the apparatus according to claim 1, which is characterized in that the processing module includes：Embedded microcomputer or
FPGA system.
10. the apparatus according to claim 1, which is characterized in that the alarm module includes：Light alarm module, and/or sound
Alarm module.
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120563A (en) * | 2018-01-16 | 2018-06-05 | 上海禹舜电气有限公司 | Differential humidity leak-detecting device, leak hunting method and the system of double water innercooling electric generator |
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2018
- 2018-01-16 CN CN201820069161.XU patent/CN207923369U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120563A (en) * | 2018-01-16 | 2018-06-05 | 上海禹舜电气有限公司 | Differential humidity leak-detecting device, leak hunting method and the system of double water innercooling electric generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Jianlin Inventor after: Chen Yuan Inventor before: Wang Jianlin |
|
| CB03 | Change of inventor or designer information |