CN107300569A - The acquisition methods of dew point of hydrogen temperature in generator - Google Patents
The acquisition methods of dew point of hydrogen temperature in generator Download PDFInfo
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- CN107300569A CN107300569A CN201710452756.3A CN201710452756A CN107300569A CN 107300569 A CN107300569 A CN 107300569A CN 201710452756 A CN201710452756 A CN 201710452756A CN 107300569 A CN107300569 A CN 107300569A
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- dew
- absolute humidity
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- hydrogen
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 67
- 239000001257 hydrogen Substances 0.000 title claims abstract description 67
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 7
- 230000014509 gene expression Effects 0.000 claims description 20
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
- G01N25/70—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point by varying the temperature of the material, e.g. by compression, by expansion
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a kind of acquisition methods of dew point of hydrogen temperature in generator, acquisition methods include：Step S1：The first interval of dew points at normal pressure temperature is obtained, dew-point temperature absolute humidity model is set up in first interval；Step S2：Dew points at normal pressure temperature is obtained, dew points at normal pressure temperature is brought into dew-point temperature absolute humidity model and obtains normal pressure absolute humidity；Step S3：Hydrogen pressure absolute humidity is obtained according to normal pressure absolute humidity；Step S4：Hydrogen pressure absolute humidity is brought into dew-point temperature absolute humidity model and obtains dew point of hydrogen temperature in generator.Technical scheme solves the problem of dew-point temperature that hydrogen is depressed in generator of the prior art calculates difficult.
Description
Technical field
The present invention relates to Generator test technical field, in particular to dew point of hydrogen temperature in a kind of generator
Acquisition methods.
Background technology
In the prior art, analysis hydrogen cooled generator hydrogen humidity in laboratory is normal pressure humidity value, need to be according to hydrogen cooled generator
The technical requirements of hydrogen humidity, by atmospheric hydrogen humidity by the process tabled look-up, calculate, tabled look-up again, are scaled to generator internal pressure
Humidity value under power, so as to judge whether to meet standard requirement.This process complexity is time-consuming, is unfavorable for the grasp of general lab technician.
The content of the invention
It is existing to solve it is a primary object of the present invention to provide a kind of acquisition methods of dew point of hydrogen temperature in generator
The problem of dew-point temperature that hydrogen is depressed in generator in technology calculates difficult.
To achieve these goals, the invention provides a kind of acquisition methods of dew point of hydrogen temperature in generator, obtain
Method includes：Step S1：The first interval of dew points at normal pressure temperature is obtained, dew-point temperature-absolute humidity is set up in first interval
Model；Step S2：Dew points at normal pressure temperature is obtained, dew points at normal pressure temperature is brought into dew-point temperature-absolute humidity model and obtained often
Press absolute humidity；Step S3：Hydrogen pressure absolute humidity is obtained according to normal pressure absolute humidity；Step S4：Hydrogen is depressed into absolute humidity
Bring into dew-point temperature-absolute humidity model and obtain dew point of hydrogen temperature in generator.
Further, dew-point temperature-absolute humidity model includes：Formula 1：Y1=6.2057*EXP (0.1043*A)；Its
In, Y1For normal pressure absolute humidity, A is dew points at normal pressure temperature, and step S2 also includes：Dew points at normal pressure temperature is brought into formula 1 and obtained
To normal pressure absolute humidity
Further, hydrogen pressure absolute humidity is obtained by below equation：Formula 2：Y2=Y1*B；Wherein, Y2Depressed for hydrogen
Absolute humidity, B is pressure coefficient, and step S3 also includes：Formula 1 is obtained into result to bring into formula 2.
Further, dew-point temperature-absolute humidity model also includes：Formula 3：Y3=9.576*LN (Y2)-17.513：Its
In, Y3For dew point of hydrogen temperature in generator, step S4 also includes：Formula 2 is obtained into result to bring into formula 3.
Further, pressure coefficient is obtained by below equation：Formula 4：B=(P1+P2)/P1；Wherein, P1For atmospheric pressure
Power, P2For generator hydrogen pressure.
Further, step S1 also includes：Multiple dew-point temperature numerical value are chosen in first interval, according to multiple dew-point temperatures
Numerical value correspondence obtains multiple absolute humidity numerical value, and the processing that carries out curve fitting of multiple dew-point temperatures and multiple absolute humidity is obtained
Dew-point temperature-absolute humidity model.
Further, step S1 also includes：The analytic expression for the curve that curve fit process is obtained is obtained, analytic expression is dew point
Temperature-absolute humidity model.
Further, step S2 also includes：Dew points at normal pressure temperature is brought into analytic expression and obtains normal pressure absolute humidity.
Further, step S4 also includes：Hydrogen pressure absolute humidity is brought into analytic expression and obtains hydrogen dew in generator
Point temperature.
Further, first interval is [- 15, -45].
Apply the technical scheme of the present invention, by setting up dew-point temperature-absolute humidity model in default first interval,
When obtaining dew point of hydrogen temperature in generator, as long as by conventional measured value, including dew points at normal pressure temperature, atmospheric pressure, generating
Hydrogen pressure zone enters to dew-point temperature-absolute humidity model in machine, you can obtain dew point of hydrogen temperature in generator.The above method is just
In calculating, and automatic calculating can be realized by program, without tabling look-up, accuracy is high.Therefore technical scheme is solved
The problem of dew-point temperature that hydrogen is depressed in generator of the prior art calculates difficult.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the flow signal of the embodiment of the acquisition methods of dew point of hydrogen temperature in the generator according to the present invention
Figure.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the application and its application or makes
Any limitation.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the application protection.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Scope of the present application is not limited up to formula and numerical value.Simultaneously, it should be appreciated that for the ease of description, each portion shown in accompanying drawing
The size divided not is to be drawn according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely exemplary, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms is represented in following accompanying drawing with letter, therefore, once it is defined in a certain Xiang Yi accompanying drawing, then subsequent attached
It need not be further discussed in figure.
In the description of the present application, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, vertical,
Vertically, orientation or position relationship indicated by level " and " top, bottom " etc. are normally based on orientation shown in the drawings or position and closed
System, is for only for ease of description the application and simplifies description, in the case where not making opposite explanation, these nouns of locality are not indicated that
There must be specific orientation or with specific azimuth configuration and operation with the device or element for implying meaning, therefore can not manage
Solve as the limitation to the application protection domain；The noun of locality " inside and outside " refers to relative to inside and outside each part profile in itself.
For the ease of description, space relative terms can be used herein, such as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.If for example, the device in accompanying drawing is squeezed, be described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Furthermore, it is necessary to which explanation, limits parts, it is only for be easy to using the word such as " first ", " second "
Corresponding parts are distinguished, such as without Stated otherwise, above-mentioned word does not have particular meaning, therefore it is not intended that to this
Apply for the limitation of protection domain.
As shown in figure 1, the acquisition methods of dew point of hydrogen temperature include in the generator of the present embodiment：Step S1：Obtain normal
The first interval of dew-point temperature is pressed, dew-point temperature-absolute humidity model is set up in first interval；Step S2：Obtain normal pressure dew
Point temperature, dew points at normal pressure temperature is brought into dew-point temperature-absolute humidity model and obtains normal pressure absolute humidity；Step S3：According to
Normal pressure absolute humidity obtains hydrogen pressure absolute humidity；Step S4：Hydrogen pressure absolute humidity is brought into dew-point temperature-absolute humidity
Model obtains dew point of hydrogen temperature in generator.
Using the technical scheme of the present embodiment, by setting up dew-point temperature-absolute humidity mould in default first interval
Type, when obtaining dew point of hydrogen temperature in generator, as long as by conventional measured value, including dew points at normal pressure temperature, atmospheric pressure, hair
Hydrogen pressure zone enters to dew-point temperature-absolute humidity model in motor, you can obtain dew point of hydrogen temperature in generator.The above method
It is easy to calculate, and automatic calculating can be realized by program, without tabling look-up, accuracy is high.Therefore the technical scheme solution of the present embodiment
Determine the problem of dew-point temperature of hydrogen pressure calculates difficult in generator of the prior art.
It is described more detail below and how obtains above-mentioned dew-point temperature-absolute humidity model：
Step S1 also includes：Multiple dew-point temperature numerical value are chosen in first interval, according to multiple dew-point temperature numerical value correspondence
Multiple absolute humidity numerical value are obtained, the processing that carries out curve fitting of multiple dew-point temperatures and multiple absolute humidity is obtained into dew point temperature
Degree-absolute humidity model.Specifically, in above-mentioned steps, for obtaining multiple absolute according to multiple dew-point temperature numerical value correspondence
Humidity, its acquisition methods can be obtained or by acquisition of tabling look-up by testing.In order that the model set up
It is more accurate, therefore set up above-mentioned model in the first interval of conventional dew-point temperature.In the present embodiment, according to multiple dew
It is by acquisition of tabling look-up that point Temperature numerical correspondence, which obtains multiple absolute humidity numerical value,.Specifically, in national standard file《GBT
11605-2005 humidity measuring methods》In, give the corresponding relation of dew-point temperature and absolute humidity.Specifically, table C.1 and
C.2 in, the corresponding relation of dew-point temperature and absolute humidity is given, the dew-point temperature that gives specifically is spent to 80 degree from -75
Data.Can be according to the accepted value of the dew-point temperature measured in practice, to obtain above-mentioned first interval.
According to national standard file《GBT 11605-2005 humidity measuring methods》Table C.1 and C.2, and setting the firstth area
Between, you can multiple dew-point temperatures are obtained, and multiple absolute humidity numerical value are obtained according to multiple dew-point temperature numerical value correspondence.Sitting
The discrete point corresponding to above-mentioned data is obtained in mark system, and curve fit process is done according to multiple discrete points, and it is bent to obtain fitting
Line.
Step S1 also includes：Obtain the analytic expression of curve that curve fit process is obtained, analytic expression is dew-point temperature-definitely
Humidity Model.Specifically, both can be using artificial calculating, it would however also be possible to employ calculate for the analytic expression of upper acquisition matched curve
The function of above-mentioned calculating analytic expression can be achieved in machine manual calculations, such as excel softwares and matlab softwares.Further,
Above-mentioned matched curve can be linear or nonlinear, can be determined according to computational accuracy requirement.It is above-mentioned to obtain
The analytic expression obtained is that, using dew-point temperature as independent variable, absolute humidity is the function of variable.
Step S2 also includes：Dew points at normal pressure temperature is brought into analytic expression and obtains normal pressure absolute humidity.Specifically, normal pressure reveals
Point temperature can be measured according to conventional instrument, bring dew points at normal pressure temperature into supreme state in obtained analytic expression, you can be obtained often
The absolute humidity of pressure.
Step S4 also includes：Hydrogen pressure absolute humidity is brought into analytic expression and obtains dew point of hydrogen temperature in generator.Tool
Body, the absolute humidity for the good rear hydrogen pressure that converts is brought into above-mentioned analytic expression, you can obtain the dew-point temperature of hydrogen pressure,
Represent hydrogen humidity.
By foregoing description as can be seen that operating personnel set up the in early stage according to the measured value of conventional dew points at normal pressure temperature
One is interval, then according to national standard file《GBT 11605-2005 humidity measuring methods》Set up in first interval dew-point temperature-
After absolute humidity model, by the computer (or manually recorded) of above-mentioned model typing.In follow-up measurement procedure,
As long as the hydrogen pressure in computer input (or manual calculations) dew points at normal pressure measured temperature, barometric pressure measure and generator
Measured value, you can automatic to calculate the dew-point temperature that (or manual calculations) obtain hydrogen pressure, eliminates the step that operating personnel table look-up
Suddenly, operating efficiency is substantially increased.
Based on the method for above-mentioned acquisition dew-point temperature-absolute humidity model, it is illustrated below with specific data.
Traditional measurements rule of thumb or before, obtain first interval for [- 15, -45].According to national standard file
《GBT11605-2005 humidity measuring methods》Table C.2, obtain when dew-point temperature first interval be [- 15, -45] when, it is multiple
The numerical value of corresponding absolute humidity.
Above-mentioned data are put into plane coordinate system, and obtain multiple discrete points.Curve is carried out to above-mentioned discrete point
Process of fitting treatment obtains matched curve.
First using dew-point temperature as independent variable, the analytic expression for trying to achieve above-mentioned matched curve is：
Formula 1：Y1=6.2057*EXP (0.1043*A)；
Wherein, Y1For normal pressure absolute humidity, A is dew points at normal pressure temperature.
Step S2 also includes：Dew points at normal pressure temperature is brought into formula 1 and obtains normal pressure absolute humidity.Specifically, normal pressure reveals
Point temperature can be obtained by measuring instrument, and the measured value of measuring instrument is brought into above-mentioned formula 1 and be can obtain under normal pressure
Absolute humidity.
The absolute humidity of hydrogen pressure is obtained according to the absolute humidity under normal pressure obtained above.Specifically：Hydrogen pressure is absolute
Humidity is obtained by below equation：
Formula 2：Y2=Y1*B；Wherein, Y2Absolute humidity is depressed for hydrogen, B is pressure coefficient, and step S3 also includes：By formula
1, which obtains result, brings into formula 2.
Wherein, pressure coefficient B is calculated by below equation：
Formula 4：B=(P1+P2)/P1；Wherein, P1For atmospheric pressure, P2For generator hydrogen pressure.
It should be noted that P1Atmospheric pressure, P2Generator hydrogen pressure also can be measured by conventional instrument.
It should be noted that the Conversion Calculation method of absolute humidity is depressed for absolute humidity under above-mentioned normal pressure and hydrogen,
In national standard file《The technical requirements of DLT 651-1998 hydrogen cooled generator hydrogen humidities》.It for details, reference can be made to annex in above-mentioned file
A.(pressure correction for determining hydrogen humidity value)
Again using absolute humidity as independent variable, another analytic expression for trying to achieve above-mentioned matched curve is：
Formula 3：Y3=9.576*LN (Y2)-17.513：
Wherein, Y3For dew point of hydrogen temperature in generator,
Step S4 also includes：Formula 2 is obtained into result to bring into formula 3, you can obtain dew point of hydrogen temperature in generator
Degree, namely obtained the humidity value of hydrogen.
In fact, because formula 1 and formula 3 are all the analytic expressions that are obtained by same matched curve, therefore formula 1 and public affairs
The inverse function each other of formula 3.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. the acquisition methods of dew point of hydrogen temperature in a kind of generator, it is characterised in that the acquisition methods include：
Step S1：The first interval of dew points at normal pressure temperature is obtained, dew-point temperature-absolute humidity mould is set up in the first interval
Type；
Step S2：Dew points at normal pressure temperature is obtained, the dew points at normal pressure temperature is brought into the dew-point temperature-absolute humidity model
Obtain normal pressure absolute humidity；
Step S3：Hydrogen pressure absolute humidity is obtained according to the normal pressure absolute humidity；
Step S4：Hydrogen pressure absolute humidity is brought into the dew-point temperature-absolute humidity model and obtains hydrogen dew in generator
Point temperature.
2. acquisition methods according to claim 1, it is characterised in that the dew-point temperature-absolute humidity model includes：
Formula 1：Y1=6.2057*EXP (0.1043*A)；
Wherein, Y1For the normal pressure absolute humidity, the A is the dew points at normal pressure temperature,
The step S2 also includes：The dew points at normal pressure temperature is brought into the formula 1 and obtains the normal pressure absolute humidity.
3. acquisition methods according to claim 2, it is characterised in that the hydrogen pressure absolute humidity is obtained by below equation
：
Formula 2：Y2=Y1*B；
Wherein, the Y2Absolute humidity is depressed for the hydrogen, the B is pressure coefficient,
The step S3 also includes：The formula 1 is obtained into result to bring into the formula 2.
4. acquisition methods according to claim 3, it is characterised in that the dew-point temperature-absolute humidity model also includes：
Formula 3：Y3=9.576*LN (Y2)-17.513：
Wherein, the Y3For dew point of hydrogen temperature in the generator,
The step S4 also includes：The formula 2 is obtained into result to bring into the formula 3.
5. acquisition methods according to claim 2, it is characterised in that the pressure coefficient is obtained by below equation：
Formula 4：B=(P1+P2)/P1；
Wherein, the P1For atmospheric pressure, the P2For generator hydrogen pressure.
6. acquisition methods according to claim 1, it is characterised in that the step S1 also includes：
Multiple dew-point temperature numerical value are chosen in the first interval, obtain multiple definitely wet according to multiple dew-point temperature numerical value correspondence
Number of degrees value, by the multiple dew-point temperature and multiple absolute humidity carry out curve fitting processing obtain the dew-point temperature-
Absolute humidity model.
7. acquisition methods according to claim 6, it is characterised in that the step S1 also includes：
The analytic expression for the curve that the curve fit process is obtained is obtained, the analytic expression is the dew-point temperature-absolute humidity
Model.
8. acquisition methods according to claim 7, it is characterised in that the step S2 also includes：
The dew points at normal pressure temperature is brought into the analytic expression and obtains the normal pressure absolute humidity.
9. acquisition methods according to claim 7, it is characterised in that the step S4 also includes：
Hydrogen pressure absolute humidity is brought into the analytic expression and obtains dew point of hydrogen temperature in the generator.
10. acquisition methods according to claim 1, it is characterised in that the first interval is [- 15, -45].
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Cited By (2)
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| CN111855744A (en) * | 2020-08-24 | 2020-10-30 | 广东国鸿氢能科技有限公司 | Dew point testing device and dew point testing method |
| CN112051080A (en) * | 2020-08-07 | 2020-12-08 | 福建福清核电有限公司 | Evaluation method for dew point measurement test of nuclear power station compressed air dryer |
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| CN112051080A (en) * | 2020-08-07 | 2020-12-08 | 福建福清核电有限公司 | Evaluation method for dew point measurement test of nuclear power station compressed air dryer |
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Application publication date: 20171027 |