CN201107119Y - Rapid enthalpy probe measuring apparatus - Google Patents
Rapid enthalpy probe measuring apparatus Download PDFInfo
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- CN201107119Y CN201107119Y CNU2007200744337U CN200720074433U CN201107119Y CN 201107119 Y CN201107119 Y CN 201107119Y CN U2007200744337 U CNU2007200744337 U CN U2007200744337U CN 200720074433 U CN200720074433 U CN 200720074433U CN 201107119 Y CN201107119 Y CN 201107119Y
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- enthalpy probe
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Abstract
The utility model belongs to the technical field of thermal plasma enthalpy and temperature measurement, in particular relates to a quick enthalpy probe measuring device, which is composed of an enthalpy probe system, a cooling water system, an air storage tank system, a circuit control and data collection analytic system, wherein, an enthalpy probe is nested by three coaxial red copper tubes. The red copper tube of the innermost layer is used for pumping measured high-temperature gas; cooling water passes through a gap between the red copper tube of the middle layer and the red copper tube of the outermost layer. The external surfaces of the red copper tube of the innermost layer and the red copper tube of the middle layer are rusted into uniformly and alternately distributed pitting copper points, so as to realize support among the three layers of red copper tubes. The air storage tank system enables an impulse-type measuring method to replace a pore flow velocity measuring type method of measuring sample gas quality in the traditional enthalpy probe system. The measuring device can measure the enthalpy and the temperature of one point of plasma torch in several seconds.
Description
Technical field
The utility model belongs to hot plasma enthalpy and temperature measurement technology field, is specifically related to a kind of quick enthalpy probe measurement mechanism.
Technical background
The hot plasma temperature,, may realize the temperature of hot plasma is diagnosed as galvanic couple etc. so use direct measurement means at several thousand to several ten thousand degree hardly.Simple and convenient with spectral measurement, but cost is too high again, and in order to realize the economical and practical reliable measurement to the temperature of hot plasma, the enthalpy probe technology is in the nineteen sixties not broken hair exhibition of arising at the historic moment.
Tradition enthalpy probe measuring system adopts the flow of mass flow meter measurement sample gas, the shortcoming of this method is to depend on the component of plasma working gas strongly and must wait until the mobile steady state (SS) that reaches of sample gas in the enthalpy probe when measuring, and is therefore longer to the needed time of the measurement of a point.
Summary of the invention
The purpose of this utility model is to provide that a kind of measuring speed is fast, measuring accuracy is high, the simple enthalpy probe measurement mechanism of device structure.
The enthalpy probe measurement mechanism that the utility model proposes is made up of four parts such as enthalpy probe system, cooling water system, gas-holder system, circuit control and data acquisition and analysis systems.
One, enthalpy probe system: as shown in Figure 2, by thermopair 6,7, pressure transducer 8, enthalpy probe 9 is formed.The structural representation of enthalpy probe as shown in Figure 1, it comprises a plasma torch 1, the plasma flame 2 that from plasma torch, sprays, an enthalpy probe 3, enthalpy probe 3 is by three nested forming of coaxial copper tube, with the method for chemical corrosion the outside surface of the outside surface of innermost layer copper tube and time internal layer copper tube is corroded into the outstanding copper point of the round point shape shape that evenly is interspersed, thereby realize the purpose of distance between three copper tubes of stable support, the distance between each layer copper tube is controlled at 0.15-0.25mm.The copper pipe of innermost layer is used to extract quantity of sample gas instant heating plasma flame, and the space between inferior internal layer and the outermost layer copper pipe is used for the chilled water circulation and pops one's head in not by high temperature melting with the protection enthalpy probe.Root at enthalpy probe 3 is provided with enthalpy probe cooling water inlet 4 and coolant outlet 5, and be respectively equipped with thermopair 6 and another thermopair 7, thermopair 6 is used to measure the chilled water leaving water temperature, and the temperature that another thermopair 7 is used for after measuring samples gas and the cooling water heat exchange is an exhaust temperature.Above-mentioned these temperature datas are all gathered to be sent to preserve in the computing machine 22 by the AD of 21 li of electrical control cubicles and are analyzed.
Two, cooling water system: as shown in Figure 2, form by the container 10 of weighing, LOAD CELLS 11, through way valve 12 and 13, high-pressure hydraulic pump 14.High-pressure hydraulic pump 14 is communicated with the cooling water inlet 4 of enthalpy probe 3 by pipeline, and the container 10 of weighing is communicated with by the coolant outlet of pipeline with enthalpy probe 3, and through way valve 12 is arranged in this connecting tube; LOAD CELLS 11 is arranged at below the container 10 of weighing, and container 10 opposite sides of weighing are provided with another through way valve 12.Be used for providing the chilled water of high flow rate to circulate at high-pressure hydraulic pump 14 at probe, high-pressure hydraulic pump 14 is pressed into chilled water in the enthalpy probe by cooling water inlet 4, chilled water flows out from coolant outlet 5, enter the container 10 of weighing by through way valve 12, the switch of control through way valve 13, can measure the chilled water quality that in time t (t can pass through software adjustment, generally get 10-20 second), enters the container 10 of weighing, i.e. the chilled water flow velocity.
Three, gas-holder system: as shown in Figure 2, form with thermopair 17, the through way valve 19 that is connected with gas-holder 18 and vacuum pump 20 by gas-holder 18, the pressure transducer 16 that is installed on the gas-holder 18.Gas-holder 18 tops are connected with enthalpy probe 9 by vacuum valve 15.Vacuum pump 20 is pumped into certain vacuum tightness (0.2-0.6 atmospheric pressure) to gas-holder 18, makes air pressure and plasma flame 2 air pressure in the gas-holder 18 form pressure reduction.Close through way valve 19, open through way valve 15, just can draws sample gas.Pressure transducer 16 and thermopair 17 are measured pressure and the temperature before and after the gas-holder draws sample gas.
Four, circuit control and data acquisition and analysis system: as shown in Figure 2, form by electrical control cubicles 21 and computing machine 22.The switch of electrical control cubicles 21 each through way valve of control and the work of high-pressure hydraulic pump 14 and vacuum pump 20, the data of each thermopair, pressure unit and LOAD CELLS are gathered and analyzed to computing machine 22, and the enthalpy and the temperature that calculate sample gas are the hot plasma temperature at measured some place.
This enthalpy probe measurement mechanism measuring speed is fast, can realize the enthalpy of a point of article on plasma torch and the measurement of temperature in the several seconds.
Description of drawings
Fig. 1 is the enthalpy probe structural representation;
Fig. 2 is quick enthalpy probe measurement mechanism figure;
Number in the figure: 1 is plasma torch, 2 flames for the plasma torch ejection, and 3 is the probe of enthalpy probe, 4 is the enthalpy probe cooling water intake, and 5 is the enthalpy probe cooling water outlet, and 6 is thermopair, 7 is another thermopair, 8 for measuring the pressure transducer of tail gas pressure, and 9 is enthalpy probe, and 10 for weighing container, 11 is LOAD CELLS, 12 is through way valve, and 13 is another through way valve, and 14 is high-pressure hydraulic pump, 15 is the 3rd through way valve, 16 is pressure transducer, and 17 is three thermocouple, and 18 is gas-holder, 19 is the 4th through way valve, 20 is oil-sealed rotary pump, and 21 is electrical control cubicles, and 22 for being equipped with the computing machine of data collection and analysis software.
Embodiment
In the utility model, enthalpy probe 3 is by three nested forming of coaxial copper tube, with the method for chemical corrosion the outside surface of the outside surface of innermost layer copper tube and time internal layer copper tube is corroded into the outstanding copper point of the round point shape shape that evenly is interspersed, thereby realize the purpose of distance between three copper tubes of stable support, the distance between each layer copper tube is controlled at about 0.2mm.Innermost layer copper tube internal diameter is 1.2mm, and innermost layer copper tube external diameter is 2.0mm, and the internal diameter of inferior internal layer copper tube is 2.5mm, and the external diameter of inferior internal layer copper tube is 3.0mm, outermost layer copper tube internal diameter 3.5mm, outermost layer copper tube external diameter 4.0mm.As required, the profile of enthalpy probe 3 can be linear pattern or is hook type, and its length is generally tens to twenties centimetres.
In the utility model, the internal diameter of cooling water inlet 4 and coolant outlet 5 is 4mm, can bear 80-120 atmospheric hydraulic pressure.
In the utility model, thermopair 6,7 and 17 is constantan-nickel chromium triangle E type thermopairs, and this model thermopair is fast time response, is suitable for measuring the occasion of (several seconds) temperature variation in the short time.Thermopair 6 is embedded in the innermost layer of enthalpy probe coolant outlet 5, is used for measuring the leaving water temperature of chilled water.Thermopair 7 is embedded in the afterbody of the innermost layer copper tube of enthalpy probe draws sample gas, is used for measuring exhaust temperature.
In the utility model, pressure transducer 8 and 16 is spring-piece type pressure transducers of two-wire system 24V output 4-20mADC signal, can measure-1 atmosphere and be pressed onto+1 atmospheric pressure.
In the utility model, the container 10 of weighing is plastics measuring tanks that a volume is 2L, by through way valve 12 usefulness internal diameters is that the water pipe of 4mm is connected with coolant outlet 5, and LOAD CELLS 11 is sensors of four-wire system 24V output 4-20mADC signal, and measurement range is 0-5kg.High-pressure hydraulic pump 14 can provide 8-120 atmospheric water under high pressure.The container 10 of weighing is vertically fixed on the LOAD CELLS 11, can measure the quality that enters the interior chilled water of the container 10 of weighing in t (t can pass through software adjustment, generally the get 10-20 second) time by the switch of control through way valve 13, promptly can calculate the flow velocity of chilled water.
In the utility model, gas-holder 18 is PVC cylindrical tube of a known volume (being generally several liters), and gas-holder 18 upper tops are that the plastic tube of 4mm is connected with enthalpy probe 9 afterbodys by through way valve 15 usefulness internal diameters, is used to store the sample gas that enthalpy probe 9 extracts.Gas-holder 18 bottoms are connected with oil-sealed rotary pump 20 by the plastic tube of through way valve 19 usefulness internal diameter 4mm, before enthalpy probe 9 draws sample gas, oil-sealed rotary pump 20 is taken out 18 one-tenth certain vacuum tightnesss of gas-holder (being generally 0.2-0.6 atmospheric pressure), make between gas-holder 18 and the hot plasma flame 2 and form pressure reduction, thus the purpose of realization draws sample gas.
In the utility model, the shell of electrical control cubicles 21 is one 700 * 300 * 1000 strongbox, in the circuit board of being made up of Programmable Logic Controller PLC, data acquisition A D and various relay, contactor is housed, electrical control cubicles 21 is used for controlling the switch of quick each through way valve of enthalpy probe measurement mechanism, high-pressure hydraulic pump 14 and vacuum pump 20 etc.The software that is equipped with in the computing machine 22 of data collection and analysis software is the labVIEW of NI.
Concrete job step is as follows:
Open computing machine, carry out the preparation that receives data.
1, opens high-pressure hydraulic pump, open through way valve 12 and 13 chilled water can be circulated smoothly;
2, start plasma torch 1, make plasma flame 2 over against enthalpy probe probe 3;
3, (t can regulate by computer software and electrical control cubicles to close 13 time of through way valve t, between 10 to 20 seconds), the data that are sent to computing machine by LOAD CELLS 11 can be calculated the flow velocity of chilled water, open through way valve 13 behind the time t again and make chilled water can continue circulation;
4, open through way valve 19 and vacuum pump 20, gas-holder 18 is pumped into certain vacuum tightness (0.2-0.6 atmospheric pressure), vacuum tightness can be regulated by electrical control cubicles and computer software;
5, open through way valve 15, utilize the pressure reduction between plasma flame 2 and the gas-holder 18 to extract certain sample gas, thermopair 6 and 7, pressure transducer 8 is sent to cooling water temperature and the exhaust temperature data before and after the draws sample gas on the computing machine, is used for the enthalpy of calculating plasma gas.
6, extinguish plasma torch 1, stop all working parts.Measure and finish.
Claims (1)
1. quick enthalpy probe measurement mechanism comprises enthalpy probe system, cooling water system, gas-holder system and circuit control and data acquisition and analysis system, it is characterized in that:
Described enthalpy probe system is by thermopair (6,7), pressure transducer (8), and enthalpy probe (9) is formed; A plasma flame (2) and an enthalpy probe (3) that enthalpy probe (9) comprises a plasma torch (1), sprays from plasma torch; Enthalpy probe (3) is by three nested forming of coaxial copper tube, with the method for chemical corrosion the outside surface of the outside surface of innermost layer copper tube and time internal layer copper tube is corroded into the outstanding copper point of the round point shape shape that evenly is interspersed, in order to support three copper tubes, the distance between each layer copper tube is controlled at 0.15-0.25mm; The copper pipe of innermost layer is used to extract quantity of sample gas instant heating plasma flame, and the space between inferior internal layer and the outermost layer copper pipe is used for the chilled water circulation and pops one's head in not by high temperature melting with the protection enthalpy probe; Root at enthalpy probe (3) is provided with enthalpy probe cooling water inlet (4) and coolant outlet (5), and be respectively equipped with thermopair (6) and another thermopair (7), thermopair (6) is used to measure the chilled water leaving water temperature, and the temperature that another thermopair (7) is used for after measuring samples gas and the cooling water heat exchange is an exhaust temperature; Above-mentioned these temperature datas are all gathered to be sent to preserve in the computing machine (22) by the AD of electrical control cubicles (21) lining and are analyzed;
Described cooling water system is made up of the container of weighing (10), LOAD CELLS (11), through way valve (12) and (13), high-pressure hydraulic pump (14), high-pressure hydraulic pump (14) is communicated with the cooling water inlet (4) of enthalpy probe (3) by pipeline, the container (10) of weighing is communicated with the coolant outlet (5) of enthalpy probe (3) by pipeline, and through way valve (12) is arranged in this connecting tube; LOAD CELLS (11) is arranged at below the container of weighing (10), and the container of weighing (10) opposite side is provided with another through way valve (12); Be used for providing the chilled water of high flow rate to circulate at high-pressure hydraulic pump (14) at probe, high-pressure hydraulic pump (14) is pressed into chilled water in the enthalpy probe by cooling water inlet (4), chilled water flows out from coolant outlet (5), enter the container of weighing (10) by through way valve (12), the switch of control through way valve (13), can measure the chilled water quality that in time t, enters the container of weighing (10), i.e. the chilled water flow velocity;
Described gas-holder system is made up of with thermopair (17), the through way valve (19) that is connected with gas-holder (18) and vacuum pump (20) gas-holder (18), the pressure transducer (16) that is installed on the gas-holder (18).Gas-holder (18) top is connected with enthalpy probe (9) by vacuum valve (15); Vacuum pump (20) is pumped into certain vacuum tightness to gas-holder (18), makes air pressure and plasma flame (2) air pressure in the gas-holder (18) form pressure reduction; Close through way valve (19), open through way valve (15), just can draws sample gas; Pressure transducer (16) and thermopair (17) are measured pressure and the temperature before and after the gas-holder draws sample gas;
Described circuit control and data acquisition and analysis system are made up of electrical control cubicles (21) and computing machine (22), electrical control cubicles (21) is controlled the work of switch and the high-pressure hydraulic pump (14) and the vacuum pump (20) of each through way valve, the data of each thermopair, pressure unit and LOAD CELLS are gathered and analyzed to computing machine (22), and the enthalpy and the temperature that calculate sample gas are the hot plasma temperature at measured some place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200744337U CN201107119Y (en) | 2007-09-06 | 2007-09-06 | Rapid enthalpy probe measuring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200744337U CN201107119Y (en) | 2007-09-06 | 2007-09-06 | Rapid enthalpy probe measuring apparatus |
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| CN201107119Y true CN201107119Y (en) | 2008-08-27 |
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| CNU2007200744337U Expired - Fee Related CN201107119Y (en) | 2007-09-06 | 2007-09-06 | Rapid enthalpy probe measuring apparatus |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776272A (en) * | 2010-03-11 | 2010-07-14 | 深圳市迈科瑞环境科技有限公司 | Processing method and device of hazardous waste |
| CN101975590A (en) * | 2010-10-14 | 2011-02-16 | 中国科学院等离子体物理研究所 | Enthalpy probe for diagnosing thermal plasma |
| CN102303016A (en) * | 2011-04-29 | 2012-01-04 | 无锡众望四维科技有限公司 | Method for automatically detecting plugging of injector steel needles based on air pressure |
| CN103698037A (en) * | 2013-12-16 | 2014-04-02 | 绵阳富林岚科技有限责任公司 | Water-cooled enthalpy probe |
| CN107036758A (en) * | 2017-05-05 | 2017-08-11 | 北京航空航天大学 | A kind of air cooling high temperature dynamic pressure probe |
| CN107063560A (en) * | 2017-04-24 | 2017-08-18 | 北京航空航天大学 | A kind of high-temperature water cooling dynamic pressure measurement probe |
| CN107131999A (en) * | 2017-04-18 | 2017-09-05 | 北京航空航天大学 | A kind of high-temperature water cooling stable state pressure-measuring probe |
| CN107167283A (en) * | 2017-05-05 | 2017-09-15 | 北京航空航天大学 | A kind of air cooling High Temperature and Stable State pressure probe |
| CN107589217A (en) * | 2017-08-22 | 2018-01-16 | 中国船舶重工集团公司第七八研究所 | A kind of hydrogen gas sensor with alloy protective structure |
| CN107655584A (en) * | 2017-11-16 | 2018-02-02 | 久茂自动化(大连)有限公司 | A kind of thermocouple being used in melten glass liquid |
| CN108601188A (en) * | 2018-07-25 | 2018-09-28 | 北京航空航天大学 | Novel Mach probe |
| CN107655584B (en) * | 2017-11-16 | 2024-05-31 | 久茂自动化(大连)有限公司 | Thermocouple for molten glass |
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2007
- 2007-09-06 CN CNU2007200744337U patent/CN201107119Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776272A (en) * | 2010-03-11 | 2010-07-14 | 深圳市迈科瑞环境科技有限公司 | Processing method and device of hazardous waste |
| CN101975590A (en) * | 2010-10-14 | 2011-02-16 | 中国科学院等离子体物理研究所 | Enthalpy probe for diagnosing thermal plasma |
| CN101975590B (en) * | 2010-10-14 | 2012-05-30 | 中国科学院等离子体物理研究所 | Enthalpy probe for diagnosing thermal plasma |
| CN102303016A (en) * | 2011-04-29 | 2012-01-04 | 无锡众望四维科技有限公司 | Method for automatically detecting plugging of injector steel needles based on air pressure |
| CN102303016B (en) * | 2011-04-29 | 2013-02-13 | 无锡众望四维科技有限公司 | Method for automatically detecting plugging of injector steel needles based on air pressure |
| CN103698037A (en) * | 2013-12-16 | 2014-04-02 | 绵阳富林岚科技有限责任公司 | Water-cooled enthalpy probe |
| CN103698037B (en) * | 2013-12-16 | 2016-03-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of water-cooled enthalpy probe |
| CN107131999A (en) * | 2017-04-18 | 2017-09-05 | 北京航空航天大学 | A kind of high-temperature water cooling stable state pressure-measuring probe |
| CN107063560A (en) * | 2017-04-24 | 2017-08-18 | 北京航空航天大学 | A kind of high-temperature water cooling dynamic pressure measurement probe |
| CN107036758A (en) * | 2017-05-05 | 2017-08-11 | 北京航空航天大学 | A kind of air cooling high temperature dynamic pressure probe |
| CN107167283A (en) * | 2017-05-05 | 2017-09-15 | 北京航空航天大学 | A kind of air cooling High Temperature and Stable State pressure probe |
| CN107589217A (en) * | 2017-08-22 | 2018-01-16 | 中国船舶重工集团公司第七八研究所 | A kind of hydrogen gas sensor with alloy protective structure |
| CN107589217B (en) * | 2017-08-22 | 2021-07-06 | 中国船舶重工集团公司第七一八研究所 | Hydrogen sensor with alloy protective structure |
| CN107655584A (en) * | 2017-11-16 | 2018-02-02 | 久茂自动化(大连)有限公司 | A kind of thermocouple being used in melten glass liquid |
| CN107655584B (en) * | 2017-11-16 | 2024-05-31 | 久茂自动化(大连)有限公司 | Thermocouple for molten glass |
| CN108601188A (en) * | 2018-07-25 | 2018-09-28 | 北京航空航天大学 | Novel Mach probe |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20110906 |