CN109708773A - Fluid temperature measurement method, processor and system - Google Patents
Fluid temperature measurement method, processor and system Download PDFInfo
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- CN109708773A CN109708773A CN201910026425.2A CN201910026425A CN109708773A CN 109708773 A CN109708773 A CN 109708773A CN 201910026425 A CN201910026425 A CN 201910026425A CN 109708773 A CN109708773 A CN 109708773A
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Abstract
The present invention relates to a kind of fluid temperature measurement method, processor and systems, belong to technical field of temperature measurement.The thermometry, pass through pressure oscillation, cavity wall temperature fluctuation or the fluctuation of sample container sample temperature to the intracorporal saturated vapor of sterilization chamber, it is loaded the accurate calculating of capacity, and then derivation goes out the synthesis coefficient of heat conduction that intracavitary container loads, two parameters of acquisition can finally be passed through, calculate the average temperature value of liquid containing, during correcting for current sterilization of liquids, the problem of large error in cavity wall temperature, sample container temperature and actual load container between the mean temperature of liquid.
Description
Technical field
The invention belongs to technical field of temperature measurement, and in particular to a kind of fluid temperature measurement method, processor and be
System.
Background technique
In research work, usually select steam sterilizer to sterilization of liquids.Specific sterilization process is to hold multiple liquid
Device is placed in steam sterilizer cavity, is heated by injecting high-temperature steam into closed chamber to liquid container；Work as liquid
When the temperature of container reaches set temperature value, within a preset period of time, this temperature is kept, then stops heating, decompression cooling；
When pressure drops to atmospheric pressure, when temperature is lower than below boiling point of liquid, chamber door taking-up container is opened.
During the above sterilization of liquids, temp probe or one mobile probe of temperature or use for measuring cavity wall
The sample temperature in one of container is measured, the estimation as fluid temperature.Since the specific heat capacity of water fluid is much larger than gold
Belong to cavity wall, therefore in temperature-rise period, the temperature of cavity wall and the temperature of liquid have the huge temperature difference, when the temperature of cavity wall reaches
Sterilising temp setting value, the heating that liquid also takes a long time can be only achieved predetermined temperature；Even if being surveyed using removable probe
Measure the fluid temperature in one of them or several containers, but distance of the intracavitary sample container apart from steam inlet, container number
Amount, capacity of different vessels etc., all can cause the heating rate of liquid container larger fluctuation occur, with the temperature of single sample bottle
The mean temperature that degree represents entire intracavitary all liq container also results in the relatively large deviation of sterilizing result.Especially insertion temperature
The liquid container of degree probe cannot be closed, and steam, which can enter in container directly to contact and condense with liquid level, dissolves in liquid, phase transformation
The huge energy of release can cause the heating rate of sample container higher than the liquid container of other sealings faster.These temperature
Detection method, so that occurring biggish error in container between fluid temperature measurement result and actual temperature.
Summary of the invention
In order to solve in container of the existing technology, there are larger mistakes between fluid temperature measurement result and actual temperature
The problem of difference, the present invention provides a kind of fluid temperature measurement method and systems, measure the spies such as accurate, convenient with temperature
Point.
The invention provides the following technical scheme:
On the one hand, a kind of fluid temperature measurement method, which comprises
Target vapor sterilizing installation is defined, places at least one liquid container into target vapor sterilizing installation cavity, to
High-temperature steam is injected in the cavity, until saturation, heats the liquid container；
Obtain heat loss rate in the cavity；
The cavity inner temperature is promoted, is obtained in the heating front and back cavity internal pressure changing value, cavity wall or sample container
Fluid temperature changing value；
Based on law of conservation of energy, according to the cavity volume, the cavity internal pressure changing value, the cavity wall temperature
Fluid temperature changing value in changing value or the sample container, calculates liquid volume in the cavity；
The cavity is calculated according to heat loss rate in the cavity volume and the cavity based on Newton's law of cooling
The whole pyroconductivity of liquid and container that inner pressurd vessel loads；
According to the liquid volume and the whole pyroconductivity, the average temperature of liquid is calculated.
It is still optionally further, described to obtain heat loss rate in the cavity, comprising:
Obtain the steam molal quantity of the intracavity liquid at the first temperature；
According to the steam molal quantity, the heat of steam release in temperature decline cavity is obtained；
Obtain the enthalpy of phase change calorie value of steam condensation release in cavity；
Decline the enthalpy of phase change heat of steam release heat and steam condensation release in the cavity in cavity according to the temperature
The sum of magnitude obtains heat loss rate in sterilization chamber body.
Still optionally further, the enthalpy of phase change calorie value for obtaining intracavitary steam condensation release, comprising:
Calculate mole value of the intracavitary steam when temperature drops to second temperature；
It is worth according to described mole, calculates the enthalpy of phase change calorie value of steam condensation release in the cavity.
Still optionally further, described to promote the cavity inner temperature, obtain the cavity internal pressure variation of heating front and back
Fluid temperature changing value in value, cavity wall and sample container, comprising:
When thering is at least one thermal probe temperature to reach set temperature in the wall chamber or the cavity, stop to described
The heating of cavity, and seal the cavity.
Still optionally further, before the heating, fluid temperature is to detect central part in the cavity in the sample container
The liquid container temperature of position.
Still optionally further, the whole pyroconductivity for calculating liquid and container that the cavity inner pressurd vessel loads, packet
Include: in any time section, vapor (steam) temperature decline release energy and the cavity in heat loss amount difference be equal to the liquid temperature
Spend the energy of rising absorption.
Still optionally further, heat loss amount is equal to heat loss rate and the steam in the cavity in the cavity
Temperature declines the product to release energy.
Still optionally further, described to calculate the average temperature of liquid, comprising: the thermal energy conducted in the unit time and institute
State that container is directly proportional to the temperature difference of the cavity and useful load is directly proportional.
Another aspect, a kind of processor for fluid temperature measurement, the processor include: to obtain module, the first meter
Calculate module, the second computing module, third computing module；
The acquisition module obtains target vapor and goes out for obtaining heat loss rate in target vapor sterilizing installation cavity
Fluid temperature changing value in the bacterium equipment heating front and back cavity internal pressure changing value, cavity wall or sample container；
First computing module, for being based on law of conservation of energy, according to the cavity volume, the cavity internal pressure
Fluid temperature changing value in power changing value, the cavity wall temperature change value or the sample container, calculates the liquid volume；
Second computing module, for being based on Newton's law of cooling, according to heat in the cavity volume and the cavity
Rate of scattering and disappearing is measured, the whole pyroconductivity of liquid and container that the cavity inner pressurd vessel loads is calculated；
The third computing module, for calculating the liquid according to the liquid volume and the whole pyroconductivity
Mean temperature.
Another aspect, a kind of fluid temperature measuring system, the system comprises: above-mentioned processor and at least a steam
Sterilizer；The steam sterilizer includes: cavity, heating module or steam injection module, detection module；
At least one liquid container is equipped in the cavity, the liquid container is for carrying target liq；
The heating module is used to be promoted the temperature of the cavity；
The steam injection module is for injecting high-temperature steam into the cavity；
The detection module, comprising: temperature detecting unit and pressure sensing cell；
The pressure sensing cell is for detecting the intracorporal pressure of the chamber；
The temperature detecting unit is for detecting the heating module heating front and back cavity inner temperature changing value, chamber
Fluid temperature changing value in wall and sample container
Fluid temperature measurement method, processor and system provided in an embodiment of the present invention, by intracorporal full to sterilization chamber
Pressure oscillation, cavity wall temperature fluctuation or the fluctuation of sample container sample temperature with steam, are loaded the accurate calculating of capacity,
And then derivation goes out the synthesis coefficient of heat conduction that intracavitary container loads, and finally can calculate liquid dress by two parameters of acquisition
The average temperature value of load, during correcting for current sterilization of liquids, cavity wall temperature, sample container temperature and actual load container
The problem of large error between the mean temperature of interior liquid.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 provides the flow chart of embodiment fluid temperature measurement method for the present invention；
Fig. 2 is the relationship signal between intracavitary vapor (steam) temperature decline and the rising of loading liquid temperature provided in this embodiment
Figure；
Fig. 3 provides embodiment a kind of structure chart of fluid temperature measurement processor for the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained institute without making creative work
There is other embodiment, belongs to the range that the present invention is protected.
In order to clearly illustrate that the process and advantage of the present embodiment inventive method, the present invention provide a kind of liquid temperature
Measurement method is spent, the method for the embodiment of the present invention includes:
Target vapor sterilizing installation is defined, places at least one liquid container into target vapor sterilizing installation cavity, to
High-temperature steam is injected in cavity, until saturation, heats liquid container；
Obtain heat loss rate in cavity；
Promote cavity inner temperature, fluid temperature in acquisition heating front and back cavity internal pressure changing value, cavity wall and sample container
Changing value；
Based on law of conservation of energy, according to cavity volume, cavity internal pressure changing value, cavity wall temperature change value or sample
Fluid temperature changing value in this container calculates liquid volume in cavity；
Based on Newton's law of cooling, according to heat loss rate in cavity volume and cavity, calculate what cavity inner pressurd vessel loaded
The whole pyroconductivity of liquid and container；
According to liquid volume and whole pyroconductivity, average temperature of liquid is calculated.
Pressure oscillation, cavity wall temperature fluctuation and sample container sample temperature fluctuation to the intracorporal saturated vapor of sterilization chamber,
It is loaded the accurate calculating of capacity, and then derivation goes out the synthesis coefficient of heat conduction that intracavitary container loads, and can finally pass through acquisition
Two parameters, calculate the average temperature value of liquid containing, during correcting for current sterilization of liquids, cavity wall temperature, sample
The problem of large error in vessel temp and actual load container between the mean temperature of liquid.
Based on a kind of above-mentioned fluid temperature measurement method, the embodiment of the present invention provides an alternative embodiment: Fig. 1 is this hair
It is bright that the flow chart of embodiment fluid temperature measurement method is provided.Referring to Fig. 1, the fluid temperature measurement method of the present embodiment can be with
The following steps are included:
S11, target vapor sterilizing installation is defined, at least one liquid appearance is placed into target vapor sterilizing installation cavity
Device injects high-temperature steam into cavity, until saturation, heats liquid container.
Specifically, define a steam sterilizing equipment as target vapor sterilizing installation, be put into this equipment cavity to
A few liquid container injects high-temperature steam until saturation, according to actual needs carries out liquid container into closed cavity
Heating.
For example, selecting target vapor sterilizing installation to sterilize liquid in the scientific research project of the present embodiment.By liquid
Liquid container is added in body, and at least one liquid container equipped with mobile probe and multiple mobile probes are put into sterilizing installation
In cavity, high-temperature steam is injected into airtight cavity, and cavity is heated.
When cavity inner temperature is increased to TBLANC(TBLANC>=100 DEG C, cavity wall temperature) when, steam off mouth or it is other plus
Heat source simultaneously closes off exhaust outlet, so that cavity persistently maintains confined space state, at this point, the record intracorporal pressure P of chamberBLANC,
It maintains E seconds, due to heat loss, cavity internal pressure is begun to decline, and after E seconds, the intracorporal pressure of chamber drops to PE, temperature decline
To TE(cavity wall temperature), by mechanically or manually, recording PEWith TESpecific value.
S12, heat loss rate in cavity is obtained.
For example, in the present embodiment, if the temperature drop difference of cavity cooling front and back is TD=TBLANC-TE；If cavity cooling front and back
Pressure drop difference be PD=PBLANC-PE。
S121, the steam molal quantity of intracavity liquid at the first temperature is obtained.
In the present embodiment, it obtains intracavitary in TBLANCAt a temperature of steam molal quantity MCAMB。
If intracavitary volume (liter) is VCAMB；Assuming that steam does not condense at 4 DEG C, the volume of steam at one atm
(liter) V2Meet following formula, and then finds out V2Numerical value.
For the different material different to quality, contained energy=(temperature here is Kai Er to specific heat capacity * mass * temperature
Literary temperature)
Kelvin degree=degrees Celsius+273, therefore, can be obtained following formula:
Known 1ml water is vaporized into vapor, under 4 DEG C and an atmospheric pressure, volume 1700ml；Known hydrone
Mol amount is 18, it is known that the quality of 1ml water is 1g.Therefore in TBLANCAt a temperature of entire intracavitary vapor mole MCAMBMeet
Following formula:
MCAMB× 18=V2 × 1000/1700=V2/1.7 (2)
Formula (2) is further calculated, can be obtained (3):
MCAMB=V2/ 30.6=VCAMB×PBLANC/(273+TBLANC)×9.0523 (3)
In formula (3), VCAMBWith PBLANCWith TBLANCIt is it is known that therefore, M can be calculatedCAMBNumerical value.
S122, according to steam molal quantity, obtain the heat of steam release in temperature decline cavity.
In the present embodiment, according to the steam molal quantity M of calculatingCAMB, calculate the heat of steam release in temperature decline cavity
Amount.
According to common knowledge, the specific heat capacity of water is 4.2KJ/Kg,
If the heat H that temperature drop discharges in cavity1,
Then H1=MCAMB×18÷1000×4.2×TD=MCAMB×TD÷13.228 (4)
It is known quantity in formula (4), therefore, H can be acquired1Numerical value.
S123, the enthalpy of phase change calorie value for obtaining steam condensation release in cavity.
S1231, mole value for calculating the intracavitary steam when temperature drops to second temperature；
It calculates cavity inner temperature and drops to TEWhen, mole value M of steam in cavityE。
If steam does not condense at 4 DEG C, the volume V of steam at one atm3Meet following formula:
The mole M of V3 liter steamE:
S1232, basis mole value calculate the enthalpy of phase change calorie value of steam condensation release in cavity.
When cavity inner temperature drops to TEWhen, share MCAMB-MEMole steam phase transforming Cheng Shui, discharge heat.
Enthalpy of phase change calorie value corresponding temperature table when table 1 is water evaporation, referring to table 1, if function FENTHAL(T DEG C) for
The enthalpy of phase change calorie value (joule) of T degrees Celsius of lower 1kg water.Then condensed water MCAMB-MEMole release heat H2Are as follows:
H2=FENTHAL(TE)×(MCAMB-ME) (6)
Intracavitary cooling+steam condensation release total amount of heat HE=H1+H2, it is lost during static state heat preservation E seconds for cavity
Energy.
| Temperature DEG C | Pressure MPa | Enthalpy KJ/kg | Temperature DEG C | Pressure MPa | Enthalpy KJ/kg |
| 0 | 0.000611 | 2501.0 | 80 | 0.047359 | 2643.8 |
| 0.01 | 0.000611 | 2501.0 | 85 | 0.057803 | 2652.1 |
| 1 | 0.000657 | 2502.8 | 90 | 0.070108 | 2660.3 |
| 2 | 0.000705 | 2504.7 | 95 | 0.084525 | 2668.4 |
| 3 | 0.000758 | 2506.5 | 100 | 0.101325 | 2676.3 |
| 4 | 0.000813 | 2508.3 | 110 | 0.14326 | 2691.8 |
| 5 | 0.000872 | 2510.2 | 120 | 0.19854 | 2706.6 |
| 6 | 0.000935 | 2512.0 | 130 | 0.27012 | 2720.7 |
| 7 | 0.001001 | 2513.9 | 140 | 0.36136 | 2734 |
| 8 | 0.001072 | 2515.7 | 150 | 0.47597 | 2746.3 |
| 9 | 0.001147 | 2517.5 | 160 | 0.61804 | 2757.7 |
| 10 | 0.001227 | 2519.4 | 170 | 0.79202 | 2768 |
| 11 | 0.001312 | 2521.2 | 180 | 1.0027 | 2777.1 |
| 12 | 0.001402 | 2523.0 | 190 | 1.2552 | 2784.9 |
| 13 | 0.001497 | 2524.9 | 200 | 1.5551 | 2791.4 |
| 14 | 0.001597 | 2526.7 | 210 | 1.9079 | 2796.4 |
| 15 | 0.001704 | 2528.6 | 220 | 2.3201 | 2799.9 |
| 16 | 0.001817 | 2530.4 | 20 | 2.7979 | 2801.7 |
| 17 | 0.001936 | 2532.2 | 240 | 3.348 | 2801.6 |
| 18 | 0.002063 | 2534.0 | 250 | 3.9776 | 2799.5 |
| 19 | 0.002196 | 2535.9 | 260 | 4.694 | 2795.2 |
| 20 | 0.002337 | 2537.7 | 270 | 5.5051 | 2788.3 |
| 22 | 0.002642 | 2541.4 | 280 | 6.4191 | 2778.6 |
| 24 | 0.002982 | 2545.0 | 290 | 7.4448 | 2765.4 |
| 26 | 0.00336 | 2543.6 | 300 | 8.5917 | 2748.4 |
| 28 | 0.003779 | 2552.3 | 310 | 9.8697 | 2726.8 |
| 30 | 0.004242 | 2555.9 | 320 | 11.29 | 2699.6 |
| 35 | 0.005622 | 2565.0 | 330 | 12.865 | 2665.5 |
| 40 | 0.007375 | 2574.0 | 340 | 14.608 | 2622.3 |
| 45 | 0.009582 | 2582.9 | 350 | 16.537 | 2566.1 |
| 50 | 0.012335 | 2591.8 | 360 | 18.674 | 2485.7 |
| 55 | 0.01574 | 2600.7 | 370 | 21.053 | 2335.7 |
| 60 | 0.019919 | 2609.5 | 371 | 21.306 | 2310.7 |
| 65 | 0.025008 | 2618.2 | 372 | 21.562 | 2280.1 |
| 70 | 0.031161 | 2626.8 | 373 | 21.821 | 2238.3 |
| 75 | 0.038548 | 2635.3 | 374 | 22.084 | 2150.7 |
Table 1
S124, the phase for declining steam release heat and steam condensation release in the cavity in cavity according to the temperature
Become enthalpy calorie value, obtains heat loss rate in sterilization chamber body.
HR=HE/ E=(H1+H2)/E can calculate HR。
HRFor in temperature TCAMBAt a temperature of this machine specific heat rejection per second.
It is worth noting that HRFor the constant for being specific to a machine.It does not carry out large repairs in this equipment, primary clustering (chamber
Body/heat-barrier material/heating unit) replacement before, this constant calculations only needs once.
S13, cavity inner temperature, liquid in acquisition heating front and back cavity internal pressure changing value, cavity wall or sample container are promoted
Temperature changing value.
In the present embodiment, after getting the heat loss rate of target vapor sterilizing installation, stationary equipment is extensive in equipment
After multiple room temperature, this equipment is run again.
Set TGOALFor the heating target value of program setting.Ensure a mobile probe centre within the cavity
In liquid container, using this liquid container as sample container, its fluid temperature is detected.
Run sterilization of liquids program, sterilizing cavity start to warm up, when detect in wall chamber or cavity it is any probe (can
The probe of vapor (steam) temperature in detection cavity body) temperature is increased to TCAMBWhen, stop heating to cavity, steam off source or other
Any heating source closes all exhaust outlets, so that keeping sealing in cavity.Wherein, 100 DEG C < TCAMB<TGOAL.Record is set at this time
Standby chamber pressure PCAMBWith fluid temperature T in sample containerB0.Recording mode at this time without limitation, can for manual record also with
It is voluntarily recorded for equipment according to pre-set programs.
Equipment is kept for F seconds in this case, the cavity pressure P after recording F2, intracavitary vapor (steam) temperature (or cavity wall temperature)
T2, liquid sample vessel temp TB2。
S14, be based on law of conservation of energy, according to cavity volume, cavity internal pressure changing value, cavity wall temperature change value or
Fluid temperature changing value in person's sample container calculates liquid volume in cavity.
In the present embodiment, if loading liquid volume is V in cavityLOAD。
Calculating in cavity temperature is TCAMBWhen every liter mole of steam value and temperature be T2When every liter mole of steam value
Difference.Calculation method has described in the above-mentioned methods, and details are not described herein again.
Intracavitary steam declines condensation release enthalpy of phase change calorie value due to temperature are as follows:
Difference × (V of every liter mole of valueCAMB-VLOAD)。
The difference of every liter mole of value is it is known that calculating intracavitary steam from temperature TCAMBDrop to T2, the heat of every liter of release,
Then:
The total amount of heat of temperature decline release=every liter of heat × (V dischargedCAMB-VLOAD)。
Known every liter of fluid temperature rises once, and the heat of absorption is a constant.Then according to law of conservation of energy, chamber
Interior liquid energy transfer meets following law:
Fluid temperature rising absorption energy × VLOAD=(the heat of intracavitary vapor (steam) temperature decline release+phase transformation release heat
Amount) × (VCAMB-VLOAD)
Wherein, VCAMBIt is a known constant, thus calculates intracavitary loading liquid volume VLOAD。
S15, it is based on Newton's law of cooling, according to heat loss rate in cavity volume and cavity, calculates cavity inner pressurd vessel dress
The liquid of load and the whole pyroconductivity of container.
Newton's law of cooling, it is known that the temperature difference between unit time heat transfer energy and two articles is directly proportional.
Fig. 2 is the relationship signal between intracavitary vapor (steam) temperature decline and the rising of loading liquid temperature provided in this embodiment
Figure, referring to Fig. 2, can derivation go out the relation function T of vapor (steam) temperature and time in cavity1(n), loading liquid temperature and time
Relation function T2(n)。
Any time section, vapor (steam) temperature decline the-cavity heat loss amount=fluid temperature rising absorption energy that releases energy
Amount.
The decline of heat loss rate * vapor (steam) temperature releases energy in heat loss amount=cavity in cavity
With this, V. can be obtained by calculus operationLOADRise the whole pyroconductivity R of liquid (including container)LOAD。
The reversed law of equal of Newton's law of cooling are as follows:
Two times, which can be measured, to the equivalent pressure fall time that cavity twice carries out under same temperature conditions is respectively
t1And t2。
In t1And t2Cavity pressure drop-out value is identical in period, then the value to release energy to loading liquid is identical；Then liquid
Heating value is identical, therefore obtains formula:
Further derivation is carried out to formula (8), is obtained:
In formula (9), due to t1And t2The known digital measured, therefore, by calculus, Newton iteration method or
The method of exhaustion can get the whole pyroconductivity R of liquid containingLOAD。
S16, according to liquid volume and whole pyroconductivity, calculate average temperature of liquid.
Due to the known total thermoconductivity R for loading container.LOAD, single according to the reverse-direction derivation of thermodynamics Newton's law of cooling
The thermal energy and container is directly proportional to the temperature difference of cavity and useful load is directly proportional that the position time conducts.
After equipment has acquired useful load, any time of sterilizing program operation, stops heating n seconds, measure intracavitary
The temperature change of pressure change and liquid containing can get the total value that heat is transmitted to loading liquid from steam.It carries out again micro-
Integral operation acquires the heat total value G of the cavity pressure variation release at n seconds moment.Cavity temperature (or cavity wall temperature)
To be known detectable, therefore the accurate mean temperature of liquid containing can be acquired.Specifically used formula is as follows:
The energy G=liquid containing temperature difference T of cavity pressure decline releaseD1× liquid capacity VLOAD× specific heat of liquid；
Specific heat capacity, liquid capacity and energy G are it is known that acquiring temperature difference TD1。
According to Newton's law of cooling, can obtain:
In previous step, R has been acquiredLOAD, and dip time t can be measured, TD1It has been acquired that, TCAMBIt has been measured that, therefore counted
Solution is calculated in the accurate temperature T at measurement moment, the i.e. accurate mean temperature of liquid containing.
The fluid temperature of the present embodiment calculates method, passes through the pressure oscillation to the intracorporal saturated vapor of sterilization chamber, cavity wall
Temperature fluctuation or the fluctuation of sample container sample temperature are loaded the accurate calculating of capacity, and then derivation goes out intracavitary container and loads
The synthesis coefficient of heat conduction, finally can calculate the average temperature value of liquid containing by two parameters of acquisition, correct for
At present during sterilization of liquids, in cavity wall temperature, sample container temperature and actual load container between the mean temperature of liquid
The problem of large error.
In order to further be illustrated to technical solution of the present invention, the embodiment of the present invention also provides a kind of fluid temperature
The processor of measurement.Fig. 3 provides embodiment a kind of structure chart of fluid temperature measurement processor for the present invention, referring to Fig. 3, originally
The processor in fluid temperature measurement of embodiment, comprising: obtain module 31, the first computing module 32, the second computing module
33, third computing module 34.
Wherein, module 31 is obtained, for obtaining heat loss rate in target vapor sterilizing installation cavity, target is obtained and steams
Fluid temperature changing value in vapour sterilizing installation heating front and back cavity internal pressure changing value, cavity wall or sample container.
First computing module 32, for being based on law of conservation of energy, according to cavity volume, cavity internal pressure changing value, chamber
Fluid temperature changing value in wall temperature changing value or sample container calculates liquid volume.
Second computing module 33, for being based on Newton's law of cooling, according to heat loss rate in cavity volume and cavity,
Calculate the whole pyroconductivity of liquid and container that cavity inner pressurd vessel loads.
Third computing module 34, for calculating average temperature of liquid according to liquid volume and whole pyroconductivity.
About the processor in above-described embodiment, the concrete mode that wherein modules execute operation is somebody's turn to do related
It is described in detail in the embodiment of method, no detailed explanation will be given here.
It is worth noting that the form that the processor operation present invention herein calculates step includes but is not limited to: little Cheng
Sequence, manual calculations or computer calculate.It is any on the basis of this technical step, the method for not making creative work belongs to
In protection scope of the present invention.
The fluid temperature measurement processor of the present embodiment, passes through the pressure oscillation to the intracorporal saturated vapor of sterilization chamber, chamber
Wall temperature fluctuation or the fluctuation of sample container sample temperature are loaded the accurate calculating of capacity, and then derivation goes out intracavitary container dress
The synthesis coefficient of heat conduction of load finally can calculate the average temperature value of liquid containing by two parameters of acquisition, correct
During current sterilization of liquids, in cavity wall temperature, sample container temperature and actual load container between the mean temperature of liquid
Large error the problem of.
In order to be further described to technical solution of the invention, fluid temperature measuring system implementation is also provided
Example.The fluid temperature measuring system of the present embodiment, comprising: above-mentioned processor and at least a steam sterilizer；Steam sterilizer
It include: cavity, heating module or steam injection module, detection module；At least one liquid container, liquid are equipped in cavity
Container is for carrying target liq；Heating module is used to be promoted the temperature of cavity；Steam injection module into cavity for injecting
High-temperature steam；Detection module, comprising: temperature detecting unit and pressure sensing cell；Pressure sensing cell is in test chamber
Pressure；Temperature detecting unit is for detecting in heating module heating front and back cavity inner temperature changing value, cavity wall and sample container
Fluid temperature changing value.
Wherein, the cavity of the steam sterilizer used needs to connect external steam source, and can continue offer aridity and reach
Steam to 99% injects.
The total amount of heat rate of scattering and disappearing of cavity will be lower than 0.35KJ/min/liter at 121 DEG C of temperature.
The temp probe that sterilizer uses, accuracy reaches 0.1 DEG C, and accurately verifies；Pressure inductor, accuracy are wanted
Reach 0.1KPA, and accurately verifies.
About the system in above-described embodiment, wherein modules/unit executes the concrete mode of operation related
It is described in detail in the embodiment of this method, no detailed explanation will be given here.
The fluid temperature measuring system of the present embodiment, passes through the pressure oscillation to the intracorporal saturated vapor of sterilization chamber, cavity wall
Temperature fluctuation and the fluctuation of sample container sample temperature are loaded the accurate calculating of capacity, and then derivation goes out intracavitary container and loads
The synthesis coefficient of heat conduction, finally can calculate the average temperature value of liquid containing by two parameters of acquisition, correct for
At present during sterilization of liquids, in cavity wall temperature, sample container temperature and actual load container between the mean temperature of liquid
The problem of large error.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, appoints
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that in the description of the present invention, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
Any process described otherwise above or method description are construed as in flow chart or herein, indicate packet
Include it is one or more for realizing specific logical function or process the step of executable instruction code module, segment
Or part, and the range of the preferred embodiment of the present invention includes other realization, wherein can not be by shown or discussion
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be by
The embodiment of the present invention person of ordinary skill in the field is understood.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, multiple steps or method can be executed soft in memory and by suitable instruction execution system with storage
Part or firmware are realized.It, and in another embodiment, can be with well known in the art for example, if realized with hardware
Any one of following technology or their combination are realized: having a logic gate for realizing logic function to data-signal
The discrete logic of circuit, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA),
Field programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage
In medium, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store and calculates at one
In machine read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of fluid temperature measurement method, which is characterized in that the described method includes:
Target vapor sterilizing installation is defined, places at least one liquid container, Xiang Suoshu into target vapor sterilizing installation cavity
High-temperature steam is injected in cavity, until saturation, heats the liquid container；
Obtain heat loss rate in the cavity；
Promote the cavity inner temperature, liquid in the acquisition heating front and back cavity internal pressure changing value, cavity wall or sample container
Temperature change value；
Based on law of conservation of energy, according to the cavity volume, the cavity internal pressure changing value, the cavity wall temperature change value
Or fluid temperature changing value in the sample container, calculate liquid volume in the cavity；
The cavity content is calculated according to heat loss rate in the cavity volume and the cavity based on Newton's law of cooling
The whole pyroconductivity of liquid and container that device loads；
According to the liquid volume and the whole pyroconductivity, the average temperature of liquid is calculated.
2. according to method described in claim 1, which is characterized in that described to obtain heat loss rate in the cavity, comprising:
Obtain the steam molal quantity of the intracavity liquid at the first temperature；
According to the steam molal quantity, the heat of steam release in temperature decline cavity is obtained；
Obtain the enthalpy of phase change calorie value of steam condensation release in cavity；
Decline the enthalpy of phase change calorie value of steam release heat and steam condensation release in the cavity in cavity according to the temperature,
Obtain heat loss rate in sterilization chamber body.
3. according to the method described in claim 2, it is characterized in that, the enthalpy of phase change heat for obtaining intracavitary steam condensation release
Value, comprising:
Calculate mole value of the intracavitary steam when temperature drops to second temperature；
It is worth according to described mole, calculates the enthalpy of phase change calorie value of steam condensation release in the cavity.
4. obtaining heating front and back the method according to claim 1, wherein described promote the cavity inner temperature
Fluid temperature changing value in the cavity internal pressure changing value, cavity wall and sample container, comprising:
When thering is at least one thermal probe temperature to reach set temperature in the wall chamber or the cavity, stop to the cavity
Heating, and seal the cavity.
5. according to the method described in claim 4, it is characterized in that, fluid temperature is in the sample container before the heating
Detect the liquid container temperature in centre in the cavity.
6. the method according to claim 1, wherein described calculate the liquid and appearance that the cavity inner pressurd vessel loads
The whole pyroconductivity of device, comprising: in any time section, vapor (steam) temperature decline releases energy and heat loss amount in the cavity
Difference be equal to the fluid temperature rising absorption energy.
7. according to the method described in claim 6, it is characterized in that, heat loss amount is equal to heat in the cavity in the cavity
Amount rate of scattering and disappearing and the vapor (steam) temperature decline the product to release energy.
8. the method according to claim 1, wherein described calculate the average temperature of liquid, comprising: when unit
The thermal energy of the interior conduction and container is directly proportional to the temperature difference of the cavity and useful load is directly proportional.
9. a kind of processor for fluid temperature measurement, which is characterized in that the processor includes: to obtain module, the first meter
Calculate module, the second computing module, third computing module；
The acquisition module obtains target vapor sterilizing and sets for obtaining heat loss rate in target vapor sterilizing installation cavity
Fluid temperature changing value in the cavity internal pressure changing value, cavity wall or sample container before and after standby heating；
First computing module changes for being based on law of conservation of energy according to the cavity volume, the cavity internal pressure
Fluid temperature changing value in value, the cavity wall temperature change value or the sample container, calculates the liquid volume；
Second computing module is dissipated for being based on Newton's law of cooling according to heat in the cavity volume and the cavity
Mistake rate calculates the whole pyroconductivity of liquid and container that the cavity inner pressurd vessel loads；
The third computing module, for it is average to calculate the liquid according to the liquid volume and the whole pyroconductivity
Temperature.
10. a kind of fluid temperature measuring system, which is characterized in that the system comprises: processor described in claim 9 and at least
One steam sterilizer；The steam sterilizer includes: cavity, heating module or steam injection module, detection module；
At least one liquid container is equipped in the cavity, the liquid container is for carrying target liq；
The heating module is used to be promoted the temperature of the cavity；
The steam injection module is for injecting high-temperature steam into the cavity；
The detection module, comprising: temperature detecting unit and pressure sensing cell；
The pressure sensing cell is for detecting the intracorporal pressure of the chamber；
The temperature detecting unit is for detecting the heating module heating front and back cavity inner temperature changing value, cavity wall and sample
Fluid temperature changing value in this container.
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