CN110132786A - A kind of steam box mass dryness fraction detection device and mass dryness fraction detection method - Google Patents
A kind of steam box mass dryness fraction detection device and mass dryness fraction detection method Download PDFInfo
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- CN110132786A CN110132786A CN201910453565.8A CN201910453565A CN110132786A CN 110132786 A CN110132786 A CN 110132786A CN 201910453565 A CN201910453565 A CN 201910453565A CN 110132786 A CN110132786 A CN 110132786A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
- G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
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Abstract
The present invention relates to a kind of steam box mass dryness fraction detection device and mass dryness fraction detection methods.A kind of steam box mass dryness fraction detection device includes temperature monitor, heat-insulated pipe, steam thermocouple, water temperature thermocouple, insulation water bottle, the first straight pipe and the second straight pipe；One end of heat-insulated pipe is hermetically arranged on steam box, and extends to inside the liner of steam box；The other end of heat-insulated pipe is connect with one end of the second straight pipe, and the other end of the second straight pipe is connect with insulation water bottle；Detection solution is contained in insulation water bottle, the end of the other end of the second straight pipe is located at below the liquid level of detection solution；Temperature monitor one end is connect with steam thermocouple, and steam thermocouple is arranged in heat-insulated pipe；The other end of temperature monitor is connect by the first straight pipe with water temperature thermocouple, and the setting of the first straight pipe is on insulation water bottle, and water temperature thermocouple is located at below the liquid level of detection solution far from the end of temperature monitor.
Description
Technical field
The present invention relates to field of measuring technique, in particular to a kind of steam box mass dryness fraction detection device and mass dryness fraction detection side
Method.
Background technique
For steam quality for the cooking efficiency of food materials, mouthfeel etc. has larger impact, therefore the detection for steam quality
With control for steaming food materials with biggish value.
However existing steam box technology not yet detects the technological means of steam box mass dryness fraction at present, is unfavorable for steam box technical capability in this way
Promotion and product it is universal.
Summary of the invention
The purpose of the present invention includes providing a kind of steam box mass dryness fraction detection device, can efficiently, quickly be detected in steam box
Mass dryness fraction, and such steam box mass dryness fraction detection device device structure is simple and convenient to operate, and is conducive to large-scale pipeline production.
Another object of the present invention includes providing a kind of mass dryness fraction detection method based on above-mentioned steam box mass dryness fraction detection device.
The embodiment of the present invention is achieved through the following technical solutions:
A kind of steam box mass dryness fraction detection device is connect to detect the mass dryness fraction in steam box with steam box comprising:
Temperature monitor, heat-insulated pipe, steam thermocouple, water temperature thermocouple, insulation water bottle, the first straight pipe and second are straight-through
Pipe；
One end of heat-insulated pipe is hermetically arranged on steam box, and extends to inside the liner of steam box；The other end of heat-insulated pipe with
One end of second straight pipe connects, and the other end of the second straight pipe is connect with insulation water bottle；
Detection solution is contained in insulation water bottle, the end of the other end of the second straight pipe is located under the liquid level of detection solution
Side；
Temperature monitor one end is connect with steam thermocouple, and steam thermocouple is arranged in heat-insulated pipe；Temperature monitor
The other end is connect by the first straight pipe with water temperature thermocouple, and the setting of the first straight pipe is on insulation water bottle, and water temperature thermocouple
End far from temperature monitor is located at below the liquid level of detection solution.
Law of conservation of energy is utilized when steam box mass dryness fraction detection device uses, and vapor (steam) temperature is acquired by solidification temperature measuring point, is surveyed
Initial water temperature, initial weight and final water temperature, final weight, i.e., be converted to fixation for latent heat of the steam in steam box and sensible heat before examination
The mass dryness fraction in steam box can be so calculated in the sensible heat of water.To sum up, such steam box mass dryness fraction detection device device structure letter
It is single, easy to operate, be conducive to large-scale pipeline production.
Further, steam box mass dryness fraction detection device further includes increasing pump；Increasing pump is arranged on heat-insulated pipe.
Further, above-mentioned detection solution is water.
Further, above-mentioned second straight pipe uses highly heat-conductive material.
Further, above-mentioned second straight pipe design is designed using small diameter tube.
Further, steam box side is arranged in close to the position at top in above-mentioned heat-insulated pipe.
Further, it is above-mentioned further include vortex-shedding meter and Venturi nozzle combination dual-element；
Dual-element is located in heat-insulated pipe or the second straight pipe, the wide end and the narrow end phase of vortex-shedding meter of Venturi nozzle
It is right.
Further, above-mentioned heat-insulated pipe and the second straight pipe have angle；Preferably, heat-insulated pipe and second leads directly to mutual hang down
Directly.
Further, the length H1 of the first straight pipe；
The height difference H2 of first straight pipe and exhausted thermos bottle mouth；
The length H3 of second straight pipe；
The height difference H4 of second straight pipe and exhausted thermos bottle mouth；
The height difference H5 of water temperature thermocouple and insulation water bottle bottom of bottle；
It is insulated the height D1 of water bottle；
It is insulated the diameter D2 of water bottle；
The internal diameter d1 of first straight pipe；
The internal diameter d2 of second straight pipe；
Insulation water bottle is filled with water quality (g) initially as M1；Pressure in steam box is p；
4M1/ (p*D2*D1) range is in 0.4-0.6.Inventor passes through above-mentioned public affairs by largely testing and testing discovery
The limitation to the initially amount of being filled with water may be implemented in formula, to ensure the optimization of mass dryness fraction test effect.
Further, the length H1 of the first straight pipe, range is in 50mm-150mm；
The height difference H2 of first straight pipe and exhausted thermos bottle mouth, range is in 30mm-100mm；
The length H3 of second straight pipe, range is in 120mm-250mm；
The height difference H4 of second straight pipe and exhausted thermos bottle mouth, range is in 100mm-200mm；
The height difference H5 of water temperature thermocouple and insulation water bottle bottom of bottle, range is in 30mm-100mm；
It is insulated the height D1 of water bottle, range is in 100mm-250mm；
It is insulated the diameter D2 of water bottle, range is in 50mm-180mm；
The internal diameter d1 of first straight pipe, range is in 2mm-8mm；
The internal diameter d2 of second straight pipe, range is in 3mm-10mm.
A kind of mass dryness fraction detection method, the steam box mass dryness fraction detection device based on any of the above-described；Method includes the following steps:
The relative position parameter of measurement device each section first, specific as follows:
The length H1 of first straight pipe；
The height difference H2 of first straight pipe and exhausted thermos bottle mouth；
The length H3 of second straight pipe；
The height difference H4 of second straight pipe and exhausted thermos bottle mouth；
The height difference H5 of water temperature thermocouple and insulation water bottle bottom of bottle；
It is insulated the height D1 of water bottle；
It is insulated the diameter D2 of water bottle；
The internal diameter d1 of first straight pipe；
The internal diameter d2 of second straight pipe；
It is calculated by the following formula mass dryness fraction value x again, as follows:
Steam box mass dryness fraction is calculated, wherein X is steam box
Mass dryness fraction value,
C is the specific heat capacity 4.2kj/ (kg*K) of water；
M0 is the quality (g) for being insulated water bottle；
M1 is that insulation water bottle is initially filled with water quality (g)；
M2 is that insulation water bottle is finally filled with water quality (g)；
T1 is that insulation water bottle is initially filled with water water temperature (DEG C)；
T2 is that insulation water bottle is finally filled with water water temperature (DEG C)；
T3 is vapor (steam) temperature (DEG C)；
H3 is steam enthalpy kj/kg；
H4 is saturated water enthalpy kj/kg.
The technical solution of the embodiment of the present invention is at least had the following advantages and beneficial effects:
A kind of steam box mass dryness fraction detection device includes temperature monitor, heat-insulated pipe, steam thermocouple, water temperature thermocouple, insulation
Water bottle, the first straight pipe and the second straight pipe.Law of conservation of energy is utilized when steam box mass dryness fraction detection device uses, and is surveyed by solidification
Warm spot acquires vapor (steam) temperature, initial water temperature, initial weight and final water temperature, final weight before testing, i.e., by steam in steam box
Latent heat and sensible heat are converted to the sensible heat of fixed water, and the mass dryness fraction in steam box can so be calculated.To sum up, such steam box mass dryness fraction
Detection device device structure is simple and convenient to operate, and is conducive to large-scale pipeline production, therefore have significant economic benefit.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the first structure diagram of steam box mass dryness fraction detection device provided in an embodiment of the present invention；
Fig. 2 is the second structural schematic diagram of steam box mass dryness fraction detection device provided in an embodiment of the present invention.
Icon: 10- steam box；20- steam box mass dryness fraction detection device；21- temperature monitor；22- heat-insulated pipe；23- increasing pump；
24- steam thermocouple；25- water temperature thermocouple；26- is insulated water bottle；The first straight pipe of 271-；The second straight pipe of 272-；28- detection
Solution.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that if occur term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
Either the invention product using when the orientation or positional relationship usually put, be merely for convenience of the description present invention and simplification retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and
It cannot be understood as indicating or implying relative importance.
In addition, be not offered as requiring component abswolute level or pendency if there are the terms such as term " vertical ", but can be slightly
Low dip.In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, " set if there is term
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
Steam box generally generates steam by steam generator, carries out heating cooking for the food materials in steam box.And steam is sent out
The steam quality that raw device generates is uncontrollable, and steam is again in steam box and food materials, the contact of steam box equipment cause steam quality to become
Change.
Steam can be divided into wet saturated steam, dry saturated steam and superheated steam, wet saturated steam (mass dryness fraction is less than 1) and dry full
It is distinguished with steam (mass dryness fraction is equal to 1) by mass dryness fraction, the temperature of superheated steam is greater than saturated-steam temperature.
Due to mass dryness fraction size, the enthalpy of steam is determined, the higher steam cooking food materials of enthalpy are very fast, and it is good in taste, and
The lower steam of mass dryness fraction, cooking time is long, and food materials surface is wet rattles away, and mouthfeel is poor.
Steam box is still in technology germination period at present, not yet forms concept for steam quality in steam box, there has been no steamings at present
The test method of vapour mass dryness fraction.
Embodiment 1
In order to overcome the above problem, a kind of steam box mass dryness fraction detection device 20 is provided in the following embodiments.
Fig. 1 is please referred to, Fig. 1 is a kind of structural schematic diagram of steam box mass dryness fraction detection device 20 provided in an embodiment of the present invention.
As can be seen from Figure 1 a kind of steam box mass dryness fraction detection device 20 include temperature monitor 21, heat-insulated pipe 22, steam thermocouple 24,
Water temperature thermocouple 25, insulation water bottle 26, the first straight pipe 271 and the second straight pipe 272.
One end of heat-insulated pipe 22 is hermetically arranged on steam box 10, and extends to the inside of 10 liner of steam box；Heat-insulated pipe 22
The other end is connect with one end of the second straight pipe 272, and the other end of the second straight pipe 272 is connect with insulation water bottle 26；
Detection solution 28 is contained in insulation water bottle 26, the end of the other end of the second straight pipe 272 is located at detection solution
Below 28 liquid level；
21 one end of temperature monitor is connect with steam thermocouple 24, and steam thermocouple 24 is arranged in heat-insulated pipe 22；Temperature
The other end of detector 21 is connect by the first straight pipe 271 with water temperature thermocouple 25, and the setting of the first straight pipe 271 is in insulation water
On bottle 26, and water temperature thermocouple 25 is located at below the liquid level of detection solution 28 far from the end of temperature monitor 21.
Law of conservation of energy is utilized when steam box mass dryness fraction detection device 20 uses, and vapor (steam) temperature is acquired by solidification temperature measuring point,
Latent heat of the steam in steam box 10 and sensible heat, i.e., be converted to by initial water temperature, initial weight and final water temperature, final weight before test
The sensible heat of fixed water, can so be calculated the mass dryness fraction in steam box 10.To sum up, such 20 equipment of steam box mass dryness fraction detection device
Structure is simple and convenient to operate, and is conducive to large-scale pipeline production.
Further, steam box mass dryness fraction detection device 20 further includes increasing pump 23；Increasing pump 23 is arranged on heat-insulated pipe 22.
It should be noted that steam conveying capacity is promoted using increasing pump 23 since the steam pressure in steam box 10 is lower,
Microkinetic Steam Recovery technology is used, maintains constant basis steam quickly to exchange heat with water, improves detection efficiency and inspection significantly
Survey precision.Optionally, detection solution 28 is water.The specific heat capacity of water is larger, and at low cost, is ideal test material.
Further, thermocouple (including steam thermocouple 24 and water temperature thermocouple 25) is for temperature parameter to be switched to electricity
Signal passes to temperature monitor 21, and temperature monitor is for reading temperature parameter.The two coordinated is completed to temperature
Real-time monitoring.
It can be seen from the figure that above-mentioned heat-insulated pipe 22 and the second straight pipe 272 have preset angle.Preferably, it is insulated
Pipe 22 is mutually perpendicular to the second straight pipe 272.
Further, in the present embodiment, above-mentioned second straight pipe 272 uses highly heat-conductive material.Fast implement high temperature steaming
Heat exchange between vapour and water at low temperature makes steam rapid condensation.
Meanwhile second straight pipe 272 design using small diameter tube design.Steam flow rate is so improved, the coefficient of heat transfer is promoted.
What needs to be explained here is that the small diameter tube is that have lesser caliber relative to the common straight pipe for wanting to have in technology.
In the present embodiment, 10 side of steam box is arranged in close to the position at top in heat-insulated pipe 22.The benefit being arranged in this way exists
In the Natural Circulation using steam from bottom to top, the impure influence of the steam of 10 bottom of steam box is excluded, it is accurate to measure in steam box 10
Portion's mass dryness fraction.
In use, its principle is that steam generator generates steam in steam box 10, it is full of steam, then minute-pressure steam increasing pump
Steam in steam box 10 is extracted into insulation water bottle 26 by 23, and steam and water exchange heat, and condensation becomes the water of certain mass, while negative pressure,
Further draws vapor.By fixed mass, the water of fixed temperature, temperature rises to a certain range.Increase heat according to water temperature
Calculate the mass dryness fraction of certain mass steam.
Specifically, the relative position parameter of measurement device each section first, specific as follows:
The length H1 of first straight pipe 271, range is in 50mm-150mm；
The height difference H2 of first straight pipe 271 and insulation 26 bottleneck of water bottle, range is in 30mm-100mm；
The length H3 of second straight pipe 272, range is in 120mm-250mm；
The height difference H4 of second straight pipe 272 and insulation 26 bottleneck of water bottle, range is in 100mm-200mm；
The height difference H5 of water temperature thermocouple 25 and insulation 26 bottom of bottle of water bottle, range is in 30mm-100mm；
It is insulated the height D1 of water bottle 26, range is in 100mm-250mm；
It is insulated the diameter D2 of water bottle 26, range is in 50mm-180mm；
The internal diameter d1 of first straight pipe 271, range is in 2mm-8mm；
The internal diameter d2 of second straight pipe 272, range is in 3mm-10mm；
It should be noted that the value range provided after above-mentioned parameter is that inventor is obtained most by many experiments and test
Good value range, in above-mentioned value range, the cost of the device is reasonable, and heat loss is small, and measurement data is accurate.
Further, insulation water bottle 26 is filled with water quality (g) initially as M1；Pressure in steam box 10 is p；
4M1/ (p*D2*D1) range is in 0.4-0.6.The limitation to the initially amount of being filled with water may be implemented by above-mentioned formula, with
Ensure the effect of mass dryness fraction test.Specifically, steam condensation is insufficient when water is very little, water temperature rises too fast, low precision；And work as
Water is too many, and temperature rises slow, low efficiency, it is therefore desirable to limit the initial amount of being filled with water.
It is calculated by the following formula mass dryness fraction value x again, as follows:
Wherein, 4M1/ (p*D2*D1) range is in 0.4-0.6.
The unit of each numerical value is as follows:
C: the specific heat capacity 4.2kj/ (kg*K) of water；
M0: the quality (g) of insulation water bottle 26；
M1: insulation water bottle 26 is initially filled with water quality (g)；
M2: insulation water bottle 26 is finally filled with water quality (g)；
T1: insulation water bottle 26 is initially filled with water water temperature (DEG C)；
T2: insulation water bottle 26 is finally filled with water water temperature (DEG C)；
T3: vapor (steam) temperature (DEG C)；
H3: steam enthalpy kj/kg；
H4: saturated water enthalpy kj/kg.
As optional embodiment, optionally, in other embodiments of the invention, above-mentioned further includes vortex-shedding meter
With the dual-element of Venturi nozzle combination；Dual-element is located in heat-insulated pipe 22 or the second straight pipe 272, the wide end of Venturi nozzle
It is opposite with the narrow end of vortex-shedding meter.So to detect steam flow and mass dryness fraction simultaneously.
Optionally, in other embodiments of the invention, above-mentioned further includes steam quality reagent；The setting of steam quality reagent
In heat-insulated pipe 22, the mass dryness fraction of its steam is determined by the variation of reagent color.
Embodiment 2
Of the invention the present embodiment provides a kind of mass dryness fraction detection methods, the steam box mass dryness fraction detection device based on embodiment one
20；Method includes the following steps:
The relative position parameter of measurement device each section first, specific as follows:
The length H1 of first straight pipe 271, range is in 50mm-150mm；
The height difference H2 of first straight pipe 271 and insulation 26 bottleneck of water bottle, range is in 30mm-100mm；
The length H3 of second straight pipe 272, range is in 120mm-250mm；
The height difference H4 of second straight pipe 272 and insulation 26 bottleneck of water bottle, range is in 100mm-200mm；
The height difference H5 of water temperature thermocouple 25 and insulation 26 bottom of bottle of water bottle, range is in 30mm-100mm；
It is insulated the height D1 of water bottle 26, range is in 100mm-250mm；
It is insulated the diameter D2 of water bottle 26, range is in 50mm-180mm；
The internal diameter d1 of first straight pipe 271, range is in 2mm-8mm；
The internal diameter d2 of second straight pipe 272, range is in 3mm-10mm；
It is calculated by the following formula mass dryness fraction value x again, as follows:
Wherein, 4M1/ (p*D2*D1) range is in 0.4-0.6.
The unit of each numerical value is as follows:
C: the specific heat capacity 4.2kj/ (kg*K) of water；
M0: the quality (g) of insulation water bottle 26；
M1: insulation water bottle 26 is initially filled with water quality (g)；
M2: insulation water bottle 26 is finally filled with water quality (g)；
T1: insulation water bottle 26 is initially filled with water water temperature (DEG C)；
T2: insulation water bottle 26 is finally filled with water water temperature (DEG C)；
T3: vapor (steam) temperature (DEG C)；
H3: steam enthalpy kj/kg；
H4: saturated water enthalpy kj/kg.
It should be noted that the value range provided after above-mentioned parameter is that inventor is obtained most by many experiments and test
Good value range, in above-mentioned value range, the cost of the device is reasonable, and heat loss is small, and measurement data is accurate.
It is illustrated with case study on implementation:
C: the specific heat capacity 4.2kj/ (kg*K) of water；
It is insulated the quality of water bottle 26, M0=695.5g；
Insulation water bottle 26 is initially filled with water quality, M1=1340.6g；
Insulation water bottle 26 is finally filled with water quality, M2=1409.9g；
Insulation water bottle 26 is initially filled with water water temperature, and T1=26.4 DEG C；
Insulation water bottle 26 is finally filled with water water temperature, and T2=80.6 DEG C；
Vapor (steam) temperature, T3=100 DEG C；
Steam enthalpy, h3=2677.2kj/kg；
Saturated water enthalpy, h4=418.7kj/kg；
It is as follows to bring formula into:
X=[4.2* (1340.6-695.5) * (80.6-26.4)-(1409.9-1340.6) * (100-80.6)]/
[(1409.9-1340.6) * (2677.2-418.7),
X=0.93, i.e., it is to belong to wet saturated steam that steam quality, which is 0.93, in steam box 10.
As optional embodiment, mass dryness fraction detection method can also be by law of conservation of energy, according to heating element
The thermal efficiency obtains theoretical quantity of steam, then detects actual evaporation, according to its steam quality of the two ratio calculation.
The technical solution of the embodiment of the present invention is at least had the following advantages and beneficial effects:
1. steam box mass dryness fraction detection device Simple portable, installation and dismantling are convenient；
2. test equipment insulation, according to the first law of thermodynamics, law of conservation of energy, test period is short, test is dry
Degree is precisely high, has a wide range of application；
3. test method is simple, theory support power is strong, and reproducibility is strong；
4. steam increasing pump 23 promotes the heat exchange efficiency between steam and water；
5. straight pipe uses highly heat-conductive material, the heat exchange between high-temperature steam and water at low temperature is fast implemented, so that steam
Rapid condensation；
Meanwhile straight tube design is designed using small diameter tube, promotes steam flow rate, improving heat exchanging efficiency.
To sum up, such 20 device structure of steam box mass dryness fraction detection device is simple and convenient to operate, and is conducive to large-scale pipeline
Production, therefore there is significant economic benefit.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (11)
1. a kind of steam box mass dryness fraction detection device, for being connect with steam box to detect the mass dryness fraction in steam box characterized by comprising
Temperature monitor (21), heat-insulated pipe (22), steam thermocouple (24), water temperature thermocouple (25), insulation water bottle (26), first
Straight pipe (271) and the second straight pipe (272)；
One end of the heat-insulated pipe (22) extends to inside the liner of steam box (10)；The other end of the heat-insulated pipe (22) with it is described
One end of second straight pipe (272) connects, and the other end of second straight pipe (272) is connect with the insulation water bottle (26)；
The insulation water bottle (26) is for being contained with detection solution (28), and the other end of second straight pipe (272) is for stretching
Enter the detection solution (28)；
Described temperature monitor (21) one end is connect with the steam thermocouple (24), and the steam thermocouple (24) is arranged in institute
It states in heat-insulated pipe (22)；The other end of the temperature monitor (21) passes through first straight pipe (271) and water temperature heat
Galvanic couple (25) connection, first straight pipe (271) is arranged on the insulation water bottle (26), and the water temperature thermocouple (25)
End far from the temperature monitor (21) is for protruding into the detection solution (28).
2. steam box mass dryness fraction detection device according to claim 1, it is characterised in that:
The steam box mass dryness fraction detection device further includes increasing pump (23)；The increasing pump (23) is arranged in the heat-insulated pipe (22)
On.
3. steam box mass dryness fraction detection device according to claim 1, it is characterised in that:
The detection solution (28) is water.
4. steam box mass dryness fraction detection device according to claim 1, it is characterised in that:
Second straight pipe (272) uses highly heat-conductive material.
5. steam box mass dryness fraction detection device according to claim 1, it is characterised in that:
Second straight pipe (272) design is designed using small diameter tube.
6. drawing 1 steam box mass dryness fraction detection device according to claim 1, it is characterised in that:
The heat-insulated pipe (22) is arranged in the steam box (10) side close to the position at top.
7. steam box mass dryness fraction detection device according to claim 1, it is characterised in that:
It further include the dual-element of vortex-shedding meter and Venturi nozzle combination；
The dual-element is located in the heat-insulated pipe (22) or second straight pipe (272), the wide end of the Venturi nozzle
It is opposite with the narrow end of the vortex-shedding meter.
8. steam box mass dryness fraction detection device according to claim 1, it is characterised in that:
The heat-insulated pipe (22) and second straight pipe (272) have angle.
9. steam box mass dryness fraction detection device according to claim 1, it is characterised in that:
The length H1 of first straight pipe (271)；
The height difference H2 of first straight pipe (271) and insulation water bottle (26) bottleneck；
The length H3 of second straight pipe (272)；
The height difference H4 of second straight pipe (272) and insulation water bottle (26) bottleneck；
The height difference H5 of water temperature thermocouple (25) and insulation water bottle (26) bottom of bottle；
It is insulated the height D1 of water bottle (26)；
It is insulated the diameter D2 of water bottle (26)；
The internal diameter d1 of first straight pipe (271)；
The internal diameter d2 of second straight pipe (272)；
Insulation water bottle is filled with water quality initially as M1；Pressure in steam box is p；
4M1/ (p*D2*D1) range is in 0.4-0.6.
10. steam box mass dryness fraction detection device according to claim 9, it is characterised in that:
The length H1 of first straight pipe (271), range is in 50mm-150mm；
The height difference H2 of first straight pipe (271) and insulation water bottle (26) bottleneck, range is in 30mm-100mm；
The length H3 of second straight pipe (272), range is in 120mm-250mm；
The height difference H4 of second straight pipe (272) and insulation water bottle (26) bottleneck, range is in 100mm-200mm；
The height difference H5 of water temperature thermocouple (25) and insulation water bottle (26) bottom of bottle, range is in 30mm-100mm；
It is insulated the height D1 of water bottle (26), range is in 100mm-250mm；
It is insulated the diameter D2 of water bottle (26), range is in 50mm-180mm；
The internal diameter d1 of first straight pipe (271), range is in 2mm-8mm；
The internal diameter d2 of second straight pipe (272), range is in 3mm-10mm.
11. a kind of mass dryness fraction detection method, it is characterised in that:
The mass dryness fraction detection method is based on steam box mass dryness fraction detection device of any of claims 1-10；The method packet
Include following steps:
The relative position parameter of measurement device each section first, specific as follows:
The length H1 of first straight pipe (271)；
The height difference H2 of first straight pipe (271) and insulation water bottle (26) bottleneck；
The length H3 of second straight pipe (272)；
The height difference H4 of second straight pipe (272) and insulation water bottle (26) bottleneck；
The height difference H5 of water temperature thermocouple (25) and insulation water bottle (26) bottom of bottle；
It is insulated the height D1 of water bottle (26)；
It is insulated the diameter D2 of water bottle (26)；
The internal diameter d1 of first straight pipe (271)；
The internal diameter d2 of second straight pipe (272)；
It is calculated by the following formula mass dryness fraction value x again, as follows:
Pass throughCalculate steam box mass dryness fraction, wherein X is steam box
Mass dryness fraction value,
C is the specific heat capacity 4.2kj/ (kg*K) of water；
M0 is the quality (g) for being insulated water bottle；
M1 is that insulation water bottle is initially filled with water quality (g)；
M2 is that insulation water bottle is finally filled with water quality (g)；
T1 is that insulation water bottle is initially filled with water water temperature (DEG C)；
T2 is that insulation water bottle is finally filled with water water temperature (DEG C)；
T3 is vapor (steam) temperature (DEG C)；
H3 is steam enthalpy kj/kg；
H4 is saturated water enthalpy kj/kg.
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| CN112729620A (en) * | 2020-12-30 | 2021-04-30 | 杭州堃博生物科技有限公司 | Automatic steam energy monitoring devices of moisturizing |
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