CN100573129C - A kind of coagulating type steam quality measurement device and measuring method - Google Patents
A kind of coagulating type steam quality measurement device and measuring method Download PDFInfo
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- CN100573129C CN100573129C CNB2006100429120A CN200610042912A CN100573129C CN 100573129 C CN100573129 C CN 100573129C CN B2006100429120 A CNB2006100429120 A CN B2006100429120A CN 200610042912 A CN200610042912 A CN 200610042912A CN 100573129 C CN100573129 C CN 100573129C
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Abstract
The present invention relates to a kind of coagulating type steam quality measurement device and measuring method.The present invention with two passages of heat interchanger (3) respectively as the steam channel and the cooling-water duct of mass dryness fraction to be measured, steam and chilled water with mass dryness fraction to be measured is incorporated in the heat interchanger simultaneously, spontaneous carry out heat conduction between the two, be that cooling water flow absorbs the heat that steam discharges and elevates the temperature when heat interchanger, vapor stream becomes the condensate water of liquid phase and its temperature is reduced to the chilled water heat release when refrigeratory, and by the calorimeter on the cooling water pipe (14), the steam condensation water thermometer (5) of the steam outlet of electronic balance (9) and heat interchanger, gather the heat Q that chilled water obtains in refrigeratory, the weight m of condensate water and temperature T
1, according to X=((Q/m+h
l)-h
w)/(h
v-h
w) calculating steam quality X to be measured.Steam quality measurement device proposed by the invention and measuring method, have simple in structure, measuring accuracy height, good stability, wide ranges and practical characteristics.
Description
(1) technical field under:
The present invention relates to steam physical property measuring technique, is a kind of coagulating type steam quality measurement device and measuring method.
(2) background technology
Steam quality is the important quality parameter of steam, contains gas phase steam and the mixtures of liquids fluid is called saturated vapour, and wherein the quality of gas phase steam and the ratio of steam gross mass are defined as the mass dryness fraction of steam.Be used for the thermal recovery technology of oil exploitation process, to the economy important influence of high-temperature water vapor mass dryness fraction to recovering the oil of oil reservoir injection.At several grade blades of steam turbine end, the water vapour mass dryness fraction is also very big to the effectiveness affects of the leaf longevity of steam turbine and steam turbine.In industry such as chemical industry, food processing, pharmacy, the water vapour mass dryness fraction is very important important physical character equally, and needs Detection ﹠ Controling water vapour mass dryness fraction continuously.
Coagulation is to measure a kind of thermodynamics method of steam quality.Coagulation is that the steam sample that will extract condenses into water in condenser, calculates the mass dryness fraction of water vapour according to measuring the liberated heat that condenses of steam in the condenser.Application number is measuring method and the device that 200410026050.3 patent of invention discloses a kind of hybrid water vapor mass dryness fraction, the technical characterictic of this method is: with the water vapour of mass dryness fraction to be measured with mix in chilled water is introduced adiabatic mixer respectively, the unsaturated water that makes water vapour become liquid phase flows out adiabatic mixer, enter the cooling water flow of adiabatic mixer by measurement, temperature, measurement enters the steam temperature of the mass dryness fraction to be measured of adiabatic mixer, the flow of the unsaturated water of adiabatic mixer is left in measurement, temperature is determined water vapour mass dryness fraction to be measured according to the energy conservation and the principle of mass conservation.The architectural feature of this device is: the steam entry pipeline of mass dryness fraction to be measured links to each other with adiabatic mixer, on the steam entry pipeline of mass dryness fraction to be measured thermometer is installed; The cooling water inlet pipeline links to each other with adiabatic mixer, on the pipeline of cooling water inlet, liquid meter and thermometer is installed; The unsaturated water outlet conduit links to each other with adiabatic mixer, and thermometer and liquid meter are installed on the unsaturated water outlet conduit.Adiabatic mixer is a bulge, inside is provided with water vapour mixed flow device and two baffles, the top of water vapour mixed flow device and the steam entry pipeline of mass dryness fraction to be measured join, and the bottom sealing has many drainings steam flow-out hole on water vapour mixed flow device outer wall.
The measuring method of this hybrid water vapor mass dryness fraction and device can be realized the measurement to the water vapour mass dryness fraction, and have the advantage that measuring accuracy is higher and cost is low.But this method and measurement mechanism but exist a technological deficiency, are exactly the poor stability of dryness measurement, show as it the measuring accuracy strictness of steam quality is depended on flow measurement precision to chilled water and unsaturated water.The flow measurement precision of chilled water and unsaturated water slightly descends, and then causes the measuring accuracy of steam quality to decline to a great extent.When the flow measurement precision of chilled water and unsaturated water is low slightly, for example be lower than 99%, then cause the measuring accuracy of steam quality to be lower than 95%.Because current flow measurement technology also is difficult to guarantee to be higher than 99% high measurement accuracy, especially is difficult to the stability of dependable flow high measurement accuracy, so the practicality of this method and apparatus is not high.
Analyze the technological deficiency of hybrid water vapor dryness factor measurement method, its basic reason is: enter the flow of adiabatic mixer chilled water and the unsaturated water flow that adiabatic mixer is left in measurement by measurement, extrapolate the steam rates that enters adiabatic mixer according to the principle of mass conservation.Because steam rates is not only the low discharge of sampling, and only is the very little part of cooling water flow, be about 1/8th to 1/10th, and water vapour is very big because of the condensation liberated heat in adiabatic mixer.The measuring error of cooling water flow and unsaturated water flow or flow rate fluctuation, can amplified exponentially in the measuring method of permanent hybrid water vapor mass dryness fraction, thereby caused the stability of this dryness factor measurement method not high, the practicality of the dryness measurement device of method manufacturing is not high thus.
In sum, for overcoming in the prior art measuring method that can permanent hybrid water vapor mass dryness fraction and installing existing technological deficiency, the poor stability and the practicality that are dryness measurement are not high, the present invention proposes a kind of measuring method and mass dryness fraction instrument of coagulating type steam quality, and this measures for steam quality and Energy Saving Control has realistic meanings.
(3) summary of the invention
For overcoming poor stability and the not high technological deficiency of practicality that exists in the prior art, the present invention proposes a kind of coagulating type steam quality measurement device and measuring method.
The device that is used for the measurement of coagulating type steam quality that the present invention proposes comprises heat interchanger, variable valve, thermometer and electronic balance, and the porch at two passages of heat interchanger is connected with cooling water pipe with steam pipe respectively, exit at steam is connected with electronic balance by condensate pipe, is connected with the rising pipe of chilled water in the exit of chilled water.In order to obtain temperature, the flow of steam and chilled water accurately, the water temperature kilsyth basalt with fixed attention of steam is housed at the steam outlet of heat interchanger; Go on pipe and the cooling water outlet tube to be provided with calorimeter at chilled water, gather related data by temperature sensor and flow sensor, and with the mass dryness fraction counter and communicate to connect between water temperature kilsyth basalt, electronic balance and the calorimeter with fixed attention.Be separately installed with variable valve on the pipeline of the present invention, and on the outside wall surface of the condensate pipe of heat interchanger, steam and cooling water outlet tube, all be covered with heat-insulation layer.
When the measurement mechanism that the present invention is proposed is used for the measurement of coagulating type steam quality, two fluid passages that utilize heat interchanger to have, with one of them steam channel as mass dryness fraction to be measured, another is as cooling-water duct, and the selection temperature is lower than the cooling water source of vapor (steam) temperature; Steam and chilled water with mass dryness fraction to be measured is incorporated in the heat interchanger simultaneously, spontaneous carry out heat conduction between the two, be that cooling water flow absorbs the heat that steam discharges and elevates the temperature when heat interchanger, vapor stream becomes the condensate water of liquid phase and its temperature is reduced to the chilled water heat release when heat interchanger.By measure the heat Q that chilled water obtains, the weight m and the temperature T of condensate water in heat interchanger
1, determine steam quality X to be measured according to the energy conservation and the principle of mass conservation by following formula:
Wherein: h
1Be the water temperature T of condensing
1Under enthalpy, h
vAnd h
wBe respectively dry saturated steam enthalpy and the saturation water enthalpy of steam under testing pressure of mass dryness fraction to be measured.By the hot rerum natura function table of steam, draw h by the pressure of steam to be measured
vAnd h
wBy condensing water temperature T
1Draw condensate water enthalpy h
1
Because the technical solution adopted in the present invention, make and spontaneously between chilled water and the steam carry out heat conduction, be that cooling water flow absorbs the heat that steam discharges and elevates the temperature when heat interchanger, vapor stream becomes the condensate water of liquid phase and its temperature is reduced to the chilled water heat release when heat interchanger, by measuring the heat that chilled water obtains in heat interchanger, and the weight of condensate water and temperature.
The dryness measurement device that the present invention proposes adopts the heat interchanger that good outer insulation is arranged, and adopts electronic balance to measure the weight of condensate water, adopts thermometer the measurements water temperature of condensing, the heat that adopts calorimeter measurement chilled water to obtain in heat interchanger.Measuring method proposed by the invention and mass dryness fraction instrument have precision height, stability height, wide ranges and practical advantage that steam quality is measured.
(4) description of drawings:
Accompanying drawing 1 is the structural representation of coagulating type steam quality measurement device.Among the figure:
1. steam pipe 2. steam regulating valves 3. heat interchanger 4. condensate water current equalizers
5. coagulate water temperature kilsyth basalt 6. and coagulate 8. days flat water tanks of water regulating valve 7. condensate pipes
9. electronic balance 10. mass dryness fraction counters 11. cooling water outlet tubes 12. cooling sea water regulating valves
13. chilled water current equalizer 14. calorimeters 15. chilled waters are gone into pipe
(5) embodiment:
Embodiment one
Present embodiment is to be that the steam of p=0.8MPa carries out dryness measurement to pressure, and pairing vapor (steam) temperature is 170.4 ℃, and the temperature of used chilled water is 18 ℃.
The coagulating type steam quality measurement device of present embodiment comprises heat interchanger, variable valve, thermometer, calorimeter, current equalizer, mass dryness fraction counter 10 and electronic balance 9, and wherein: heat interchanger 3 is the plate type heat exchanger of multilayer heat exchanger plates.The porch of 3 two passages of heat interchanger is gone into pipe 15 with steam pipe 1 and chilled water respectively and is connected, in the exit of steam by being connected with the sky flat water tank 8 of electronic balance 9, the outlet of chilled water have chilled water go out to manage 11; Between steam pipe 1 and heat interchanger 3, steam regulating valve 2 is arranged, water regulating valve 6 is with fixed attention arranged between condensate pipe 7 and day flat water tank 8, cooling sea water regulating valve 12 is arranged on cooling water outlet pipe 11.In order to obtain uniform condensate water of temperature and chilled water, present embodiment is equipped with condensate water current equalizer 4 and chilled water current equalizer 13 respectively in the condensate water of heat interchanger 3 and the outlet of chilled water.For the temperature and the heat of flow that can obtain chilled water exactly to determine that chilled water is absorbed in heat interchanger 3, present embodiment also goes on the pipe 15 calorimeter 14 is installed at chilled water, the flow sensor of calorimeter 14 and one of them temperature sensor and chilled water are gone into pipe 15 and are joined, and another temperature sensor is fixed in the cooling water outlet tube 11; Water temperature kilsyth basalt 5 with fixed attention is installed on condensate pipe 7.It flat water tank 8 is placed on the electronic balance 9.Mass dryness fraction counter 10 and coagulating between water temperature kilsyth basalt 5, electronic balance 8 and the calorimeter 14 communicates to connect.
The present invention at steam pipe 1, steam regulating valve 2, heat interchanger 3, condensate water current equalizer 4, coagulate the heat-insulation layer that all is covered with the high-quality glass wool on the outside wall surface of water temperature kilsyth basalt 5, condensate pipe 7, chilled water current equalizer 13, calorimeter 14 and cooling water outlet tube 11.
Carrying out steam quality when measuring, two fluid passages that utilize heat interchanger 3 to be had are connected one of them with steam pipe 1, and as the steam channel of mass dryness fraction to be measured, another is gone into to manage 15 with chilled water and is connected, as cooling-water duct; Steam and chilled water with mass dryness fraction to be measured is incorporated in the heat interchanger simultaneously, by regulating cooling sea water regulating valve 12, chilled water is gone in pipe 15, heat interchanger 3 and the cooling water outlet tube 11 at chilled water stably to flow, and make and spontaneously between steam and the chilled water carry out heat conduction, be that cooling water flow absorbs the heat that steam discharges and elevates the temperature when heat interchanger, vapor stream becomes the condensate water of liquid phase and makes its temperature be reduced to 45 ℃～60 ℃ and be stabilized in this temperature range to the chilled water heat release when heat interchanger.Be t this moment
1Constantly, mass dryness fraction counter 10 is gathered the measured heat accumulative Q of calorimeter 14 respectively
1The weight m that=680kJ, electronic balance 9 are measured
1=1.2kg and coagulate the measured temperature T of water temperature kilsyth basalt 5
1,1=51.5 ℃, at time Δ t=t through a sampling period
2-t
1=20s is promptly at t
2Constantly, mass dryness fraction counter 10 is gathered the measured heat accumulative Q of calorimeter 14
2The weight m that=851.4kJ, electronic balance 9 are measured
2=1.28kg and coagulate the measured temperature T of water temperature kilsyth basalt 5
1,2=51.7 ℃, according to following formula
Q＝Q
2-Q
1＝171.4kJ
m＝m
2-m
1＝0.08kg
Draw the weight m of heat Q, condensate water and coagulate the mean value T of coolant-temperature gage
1In mass dryness fraction counter 10, be built-in with steam heat rerum natura function table, mass dryness fraction counter 10 is according to the medial temperature T of condensate water in the Δ t time that is collected
1, draw the condensate water specific enthalpy h under this temperature
1=216.1kJ/kg.The vapor pressure p=0.8MPa of the mass dryness fraction to be measured that mass dryness fraction counter 10 is imported or manually imported by tensimeter draws the saturation water enthalpy h of mass dryness fraction steam to be measured under pressure p by built-in steam heat rerum natura function table
w=721.02kJ/kg and dry saturated steam enthalpy h
v=2768.3kJ/kg, and according to following formula
Draw steam quality X=0.8 to be measured, and show.
Embodiment two
Present embodiment is to be that the steam of p=0.3MPa carries out dryness measurement to pressure, and pairing vapor (steam) temperature is 133.54 ℃, and the temperature of used chilled water is 20 ℃.
The coagulating type steam quality measurement device of present embodiment comprises heat interchanger, variable valve, thermometer, calorimeter, current equalizer, mass dryness fraction counter 10 and electronic balance 9, and wherein: heat interchanger 3 is the plate type heat exchanger of multilayer heat exchanger plates.The porch of 3 two passages of heat interchanger is gone into pipe 15 with steam pipe 1 and chilled water respectively and is connected, in the exit of steam by being connected with the sky flat water tank 8 of electronic balance 9, the outlet of chilled water have chilled water go out to manage 11; Between steam pipe 1 and heat interchanger 3, steam regulating valve 2 is arranged, water regulating valve 6 is with fixed attention arranged between condensate pipe 7 and day flat water tank 8, cooling sea water regulating valve 12 is arranged on cooling water outlet pipe 11.In order to obtain uniform condensate water of temperature and chilled water, present embodiment is equipped with condensate water current equalizer 4 and chilled water current equalizer 13 respectively in the condensate water of heat interchanger 3 and the outlet of chilled water.For the temperature and the heat of flow that can obtain chilled water exactly to determine that chilled water is absorbed in heat interchanger 3, present embodiment also goes on the pipe 15 calorimeter 14 is installed at chilled water, the flow sensor of calorimeter 14 and one of them temperature sensor and chilled water are gone into pipe 15 and are joined, and another temperature sensor is fixed in the cooling water outlet tube 11; Water temperature kilsyth basalt 5 with fixed attention is installed on condensate pipe 7.It flat water tank 8 is placed on the electronic balance 9.Mass dryness fraction counter 10 and coagulating between water temperature kilsyth basalt 5, electronic balance 8 and the calorimeter 14 communicates to connect.
The present invention at steam pipe 1, steam regulating valve 2, heat interchanger 3, condensate water current equalizer 4, coagulate on the outside wall surface of water temperature kilsyth basalt 5, condensate pipe 7, chilled water current equalizer 13, calorimeter 14 and cooling water outlet tube 11 and all be covered with high-quality rock wool heat-preservation layer.
Carrying out steam quality when measuring, two fluid passages that utilize heat interchanger 3 to be had are connected one of them with steam pipe 1, and as the steam channel of mass dryness fraction to be measured, another is gone into to manage 15 with chilled water and is connected, as cooling-water duct; Steam and chilled water with mass dryness fraction to be measured is incorporated in the heat interchanger simultaneously, by regulating cooling sea water regulating valve 12, chilled water is gone in pipe 15, heat interchanger 3 and the cooling water outlet tube 11 at chilled water stably to flow, and make and spontaneously between steam and the chilled water carry out heat conduction, be that cooling water flow absorbs the heat that steam discharges and elevates the temperature when heat interchanger, vapor stream becomes the condensate water of liquid phase and makes its temperature be reduced to 50 ℃～65 ℃ and be stabilized in this temperature range to the chilled water heat release when heat interchanger.Be t this moment
1Constantly, mass dryness fraction counter 10 is gathered the measured heat accumulative Q of calorimeter 14 respectively
1The weight m that=2000kJ, electronic balance 9 are measured
1=0.8kg and coagulate the measured temperature T of water temperature kilsyth basalt 5
1,1=56.4 ℃, at time Δ t=t through a sampling period
2-t
1=30s is promptly at t
2Constantly, mass dryness fraction counter 10 is gathered the measured heat accumulative Q of calorimeter 14
2The weight m that=2276.8kJ, electronic balance 9 are measured
2=0.96kg and coagulate the measured temperature T of water temperature kilsyth basalt 5
1,2=56.5 ℃, according to following formula
Q＝Q
2-Q
1＝276.8kJ
m＝m
2-m
1＝0.16kg
Draw the weight m of heat Q, condensate water and coagulate the mean value T of coolant-temperature gage
1In mass dryness fraction counter 10, be built-in with steam heat rerum natura function table, mass dryness fraction counter 10 is according to the medial temperature T of condensate water in the Δ t time that is collected
1, draw the condensate water specific enthalpy h under this temperature
1=216.1kJ/kg.The vapor pressure p=0.3MPa of the mass dryness fraction to be measured that mass dryness fraction counter 10 is imported or manually imported by tensimeter draws the saturation water enthalpy h of mass dryness fraction steam to be measured under pressure p by built-in steam heat rerum natura function table
w=561.46J/kg and dry saturated steam enthalpy h
v=2724.89kJ/kg, and according to following formula
Draw steam quality X=0.649 to be measured, and show.
Embodiment three
Present embodiment is to be that the steam of p=10MPa carries out dryness measurement to pressure, and pairing vapor (steam) temperature is 310.96 ℃, and the temperature of used chilled water is 24 ℃.
The coagulating type steam quality measurement device of present embodiment comprises heat interchanger, variable valve, thermometer, calorimeter, current equalizer, mass dryness fraction counter 10 and electronic balance 9, and wherein: heat interchanger 3 is the plate type heat exchanger of multilayer heat exchanger plates.The porch of 3 two passages of heat interchanger is gone into pipe 15 with steam pipe 1 and chilled water respectively and is connected, in the exit of steam by being connected with the sky flat water tank 8 of electronic balance 9, the outlet of chilled water have chilled water go out to manage 11; Between steam pipe 1 and heat interchanger 3, steam regulating valve 2 is arranged, water regulating valve 6 is with fixed attention arranged between condensate pipe 7 and day flat water tank 8, cooling sea water regulating valve 12 is arranged on cooling water outlet pipe 11.In order to obtain uniform condensate water of temperature and chilled water, present embodiment is equipped with condensate water current equalizer 4 and chilled water current equalizer 13 respectively in the condensate water of heat interchanger 3 and the outlet of chilled water.For the temperature and the heat of flow that can obtain chilled water exactly to determine that chilled water is absorbed in heat interchanger 3, present embodiment also goes on the pipe 15 calorimeter 14 is installed at chilled water, the flow sensor of calorimeter 14 and one of them temperature sensor and chilled water are gone into pipe 15 and are joined, and another temperature sensor is fixed in the cooling water outlet tube 11; Water temperature kilsyth basalt 5 with fixed attention is installed on condensate pipe 7.It flat water tank 8 is placed on the electronic balance 9.Mass dryness fraction counter 10 and coagulating between water temperature kilsyth basalt 5, electronic balance 8 and the calorimeter 14 communicates to connect.
The present invention at steam pipe 1, steam regulating valve 2, heat interchanger 3, condensate water current equalizer 4, coagulate on the outside wall surface of water temperature kilsyth basalt 5, condensate pipe 7, chilled water current equalizer 13, calorimeter 14 and cooling water outlet tube 11 and all be covered with the high-quality polyurethane insulation coating.
Carrying out steam quality when measuring, two fluid passages that utilize heat interchanger 3 to be had are connected one of them with steam pipe 1, and as the steam channel of mass dryness fraction to be measured, another is gone into to manage 15 with chilled water and is connected, as cooling-water duct; Steam and chilled water with mass dryness fraction to be measured is incorporated in the heat interchanger simultaneously, by regulating cooling sea water regulating valve 12, chilled water is gone in pipe 15, heat interchanger 3 and the cooling water outlet tube 11 at chilled water stably to flow, and make and spontaneously between steam and the chilled water carry out heat conduction, be that cooling water flow absorbs the heat that steam discharges and elevates the temperature when heat interchanger, vapor stream becomes the condensate water of liquid phase and makes its temperature be reduced to 60 ℃～70 ℃ and be stabilized in this temperature range to the chilled water heat release when heat interchanger.Be t this moment
1Constantly, mass dryness fraction counter 10 is gathered the measured heat accumulative Q of calorimeter 14 respectively
1The weight m that=4000kJ, electronic balance 9 are measured
1=1.8kg and coagulate the measured temperature T of water temperature kilsyth basalt 5
1,1=63 ℃, at time Δ t=t through a sampling period
2-t
1=40s is promptly at t
2Constantly, mass dryness fraction counter 10 is gathered the measured heat accumulative Q of calorimeter 14
2The weight m that=4282.5kJ, electronic balance 9 are measured
2=1.92kg and coagulate the measured temperature T of water temperature kilsyth basalt 5
1,2=63.2 ℃, according to following formula
Q＝Q
2-Q
1＝282.5kJ
m＝m
2-m
1＝0.12kg
Draw the weight m of heat Q, condensate water and coagulate the mean value T of coolant-temperature gage
1In mass dryness fraction counter 10, be built-in with steam heat rerum natura function table, mass dryness fraction counter 10 is according to the medial temperature T of condensate water in the Δ t time that is collected
1, draw the condensate water specific enthalpy h under this temperature
1=264.19kJ/kg.The vapor pressure p=10MPa of the mass dryness fraction to be measured that mass dryness fraction counter 10 is imported or manually imported by tensimeter draws the saturation water enthalpy h of mass dryness fraction steam to be measured under pressure p by built-in steam heat rerum natura function table
w=1407.87/kg and dry saturated steam enthalpy h
v=2725.47kJ/kg, and according to following formula
Draw steam quality X=0.919 to be measured, and show.
Claims (5)
1. coagulating type steam quality measurement device, comprise steam pipe (1), cooling water pipe, thermometer and valve, it is characterized in that also comprising heat interchanger (3), electronic balance (9), condensate water current equalizer (4), mass dryness fraction counter (10) and chilled water current equalizer (13), and two access roades of heat interchanger are gone into pipe (15) with steam pipe (1) and chilled water respectively and are connected; The steam (vapor) outlet passage of heat interchanger is connected with electronic balance (9) by condensate pipe (7), and the coolant outlet passage of heat interchanger is connected with cooling water outlet tube (11), and chilled water current equalizer (13) is housed on cooling water outlet tube (11); Condensate water current equalizer (4) is housed on the steam (vapor) outlet passage of heat interchanger (3) and coagulates water temperature kilsyth basalt (5), go on pipe (15) and the cooling water outlet tube (11) to be provided with calorimeter (14) at chilled water, gather related data by temperature sensor and flow sensor, and the mass dryness fraction counter with communicate to connect between water temperature kilsyth basalt, electronic balance and the calorimeter with fixed attention; Mass dryness fraction counter (10) is built-in with the hot rerum natura function table of steam.
2. coagulating type steam quality measurement device according to claim 1 is characterized in that steam regulating valve (2) is positioned on the steam pipe (1), and calorimeter (14) and cooling sea water regulating valve (12) are positioned at chilled water and go on the pipe (15).
3. coagulating type steam quality measurement device according to claim 1 is characterized in that all being covered with heat-insulation layer on the outside wall surface of heat interchanger (3), steam pipe (1), condensate pipe (7) and cooling water outlet tube (11).
4. coagulating type steam quality measurement device according to claim 1 is characterized in that the flow sensor of calorimeter (14) and chilled water go into pipe (15) and join; A temperature sensor of calorimeter (14) is fixed on chilled water goes in the pipe (15), and another temperature sensor is fixed in the cooling water outlet tube (11) and along the cooling water flow direction and is positioned at chilled water current equalizer (13) afterwards.
5. method of utilizing the described coagulating type steam quality measurement device of claim 1 to measure the coagulating type steam quality is characterized in that:
A. the steam of chilled water and mass dryness fraction to be measured is introduced respectively in two fluid passages of heat interchanger (3), with one of them steam channel as mass dryness fraction to be measured, another is as cooling-water duct;
B. spontaneously in steam and chilled water the flowing in heat interchanger (3) carry out heat conduction, make chilled water absorb the heat that steam discharges and heat up, make steam cooling become the condensate water of liquid phase;
C. measure the heat Q that chilled water obtains, the weight m and the temperature T of condensate water in heat interchanger (3)
1, the vapor pressure p to mass dryness fraction counter (10) input mass dryness fraction to be measured obtains the saturation water enthalpy h of mass dryness fraction steam to be measured under p pressure by the mass dryness fraction counter
wWith dry saturated steam enthalpy h
v, and determine steam quality X to be measured by following formula:
Wherein: h
1Be the water temperature T of condensing
1Under enthalpy, h
vAnd h
wBe respectively dry saturated steam enthalpy and the saturation water enthalpy of steam under testing pressure p of mass dryness fraction to be measured.
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