CN204203149U - One is penetrated vapour and to be drawn gas saturated vapor dryness measurement mechanism - Google Patents
One is penetrated vapour and to be drawn gas saturated vapor dryness measurement mechanism Download PDFInfo
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- CN204203149U CN204203149U CN201420526592.6U CN201420526592U CN204203149U CN 204203149 U CN204203149 U CN 204203149U CN 201420526592 U CN201420526592 U CN 201420526592U CN 204203149 U CN204203149 U CN 204203149U
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Abstract
The utility model to draw gas saturated vapor dryness measurement mechanism for penetrating vapour.Comprise container and hold a certain amount of water, penetrate vapour vapor extractor, one end passes into superheated vapor, under the other end passes into the water level of container, and arranges saturated vapour import to be measured thereon, is formed vacuum by flow of superheated steam and is drawn by saturated vapour to be measured penetrating in vapour vapor extractor; The pipeline that superheated vapor is set with penetrate vapour vapor extractor and be connected, water level takes into account the differential pressure transmitter supporting with it, is arranged on the change of sensed water level on container and water level signal is transmitted; Temperature sensor, is arranged on the temperature of measurement water in container and is transmitted by temperature signal; Tensimeter and the pressure unit supporting with it, the pressure of saturated vapour to be measured measured by the pipeline being arranged on saturated vapour to be measured and transmitted by pressure signal; Host computer, is connected with differential pressure transmitter, pressure unit and temperature sensor by input end, carries out collection store data.
Description
Technical field
The utility model belongs to saturated vapor dryness fields of measurement, especially saturated vapour to be measured can be incorporated into the coagulating type saturated vapor dryness measurement mechanism carrying out mixed heat transfer in the container that a certain amount of chilled water is housed from negative pressure system.
Background technology
At present, known saturated vapor dryness measuring method has: (1) assay method, by sampling to saturated vapour to be measured, chemically examines salt content determination saturated vapor dryness in water.Assay method is a kind of test in laboratory method, is not suitable for On-line sampling system in engineering.(2) non-thermodynamics method has optical detection methods, conducting probe method, capacitance method, hot line and gamma-rays method etc.At present, also there is larger limitation with not enough in non-thermodynamics method, the measurement mechanism cost according to said method manufactured is higher, limits by field of employment, and there are limitation in measuring accuracy and serviceable life in engineer applied.(3) thermodynamics method has flow limit method, steam air mixing method, heating, phase separation method, mixing method, coagulation etc.Thermodynamics method needs to extract sample from saturated vapour to be measured, then guides measurement mechanism into.The method comes from the thermodynamic definitions of saturated vapor dryness, and measuring principle is clear, and shortcoming needs to extract sample, and this makes its online practicality be subject to certain restrictions.In thermodynamics method, the measuring principle of coagulation is simple, little by saturated vapour parameter influence to be measured, dryness measurement wide ranges.In many application places, coagulation has the condition of On-line sampling system, is practical measuring method.The device composition of existing coagulating type saturated vapor dryness measurement mechanism and measuring method (application number is CN200610042912) comprising: heat interchanger, electronic balance, calorimeter, thermometer, display; Measuring method is that saturated vapour to be measured and chilled water are introduced dividing wall type heat exchanger, carries out conduction heat exchange by heat-transfer surface; Its shortcoming is that (1) is only applicable to the steam to be measured being in malleation to be incorporated in heat interchanger, is then difficult to be incorporated in heat interchanger go for the steam to be measured being in negative pressure state.(2) the end difference of heat interchanger and the clean-up performance of heat-transfer surface will have influence on heat transfer effect, and have influence on measuring accuracy.(3) system composition is complicated, and cost is high.
Utility model content
Technical problem to be solved in the utility model is to provide one to penetrate vapour and bleeds saturated vapor dryness measurement mechanism, be intended to solve the impact that saturated vapor dryness measuring accuracy of the prior art is subject to heat-transfer surface end difference and clean-up performance, can not be used for negative pressure system, system forms the high problem of complicated cost.
The utility model is achieved in that the utility model provides one and penetrates vapour and to draw gas saturated vapor dryness measurement mechanism, and this device comprises:
Container, for holding a certain amount of water, the water yield is advisable can reach water-level gauge Lower Range;
Penetrate vapour vapor extractor, one end passes into superheated vapor, under the other end passes into the water level of container, and arranges saturated vapour import to be measured thereon, is formed vacuum by flow of superheated steam and is drawn by saturated vapour to be measured penetrating in vapour vapor extractor;
The pipeline that superheated vapor is set with penetrate vapour vapor extractor and be connected, the pipeline of superheated vapor is arranged throttling orifice plate for measuring flow, with the differential pressure transmitter that throttling orifice plate is supporting, flow signal is transmitted; The pipeline of superheated vapor is gone back set temperature sensor and pressure unit be respectively used to measure the temperature of superheated vapor and vapour pressure and temperature, pressure signal is transmitted;
Water level takes into account the differential pressure transmitter supporting with it, to be arranged on container for the change of sensed water level and water level signal to be transmitted;
Temperature sensor, is arranged in container, for measuring the temperature of water and being transmitted by temperature signal;
Tensimeter and the pressure unit supporting with it, be arranged on the pipeline of saturated vapour to be measured, for measuring the pressure of saturated vapour to be measured and being transmitted by pressure signal;
Host computer, is connected with differential pressure transmitter, pressure unit and temperature sensor by input end, for parameter collection and store.
Further, superheated vapor pipeline and penetrate between vapour vapor extractor and set gradually gate valve and reverse checkvalve.
Further, described vapour vapor extractor of penetrating comprises the nozzle be connected successively according to admission direction, mixing chamber and diffuser pipe, mixing chamber arranges non-return flap be connected with the conveyance conduit of saturated vapour to be detected, the superheated vapor with certain pressure enters nozzle, this nozzle adopts contracting-expanding nozzle, jet expansion steam flow speed can be made up to 1000m/s, pressure energy is become kinetic energy, make height of formation vacuum in mixing chamber, saturated vapour to be measured is sucked into mixing chamber, brought into diffuser pipe by high speed steam flow, in diffuser pipe, the kinetic energy of mixing gas becomes pressure energy, the top hole pressure of diffuser pipe is a little more than atmospheric pressure, saturated vapour to be measured enters in the water of container, when superheated vapor stops, non-return flap is closed automatically, prevent the aqueous reflux in container.
The utility model compared with prior art, beneficial effect is: the saturated vapour to be measured that the utility model device had both been applicable to be in barotropic state is also applicable to be in the saturated vapour to be measured of negative pressure state, the utility model adopts mixed heat transfer, there is not the impact of heat-transfer surface end difference and clean-up performance, the required parameter measured is less, table meter technology maturation used, precision are higher, and therefore measurement result precision is relatively high, and it is low that device forms simple cost.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, one is penetrated vapour and to be drawn gas saturated vapor dryness measurement mechanism, and this device comprises: container 7, for holding a certain amount of water;
Penetrate vapour vapor extractor 5, one end passes into superheated vapor, under the other end passes into the water level of container 7, and arranges saturated vapour import to be measured thereon, by flow of superheated steam penetrate in vapour vapor extractor 5 formed vacuum saturated vapour to be measured is drawn;
The pipeline 9 that superheated vapor is set with penetrate vapour vapor extractor and be connected, superheated vapor pipeline is arranged gate valve 3 (for turning off pipeline when needed) and prevent superheated vapor adverse current with reverse checkvalve 2, be provided with throttling orifice plate 1 and the differential pressure transmitter supporting with it, be provided with tensimeter and pressure unit, thermometer takes into account temperature sensor, superheated vapor is imported and penetrates in vapour fluid transducer 5; Penetrate vapour vapor extractor 5, comprise nozzle 52, non-return flap 53, mixing chamber 54, diffuser pipe 55, the superheated vapor with certain pressure sprays through nozzle 52, pressure energy is become kinetic energy, make height of formation vacuum in mixing chamber 54, saturated vapour to be measured is sucked into mixing chamber 54, is brought into diffuser pipe 55 by working water, the top hole pressure of diffuser pipe 55 is a little more than atmospheric pressure, and saturated vapour to be measured enters in the water of container with superheated vapor.When superheated vapor stops, non-return flap 53 is closed automatically, prevents aqueous reflux.The water level arranged on the container 7 takes into account the differential pressure transmitter 11 supporting with it, for the change of sensed water level; Thermometer on the container 7 and the temperature sensor 8 supporting with it are set for measuring tempeature; Be arranged on the tensimeter on the pipeline of saturated vapour to be measured and the pressure unit 4 supporting with it, for measuring the pressure of saturated vapour to be measured; Host computer 12 is set, is connected with differential pressure transmitter, pressure unit and temperature sensor by input end, for the collection of parameter, have the calculating of thermal balance equation in it, calculate saturated vapor dryness.Water drain valve 10 is set in the bottom of container for discharging water.In order to prevent water level too high, arrange run-down pipe 6 (keeping unimpeded) on the top of container, container 7 is for holding a certain amount of water (water yield is advisable can reach water-level gauge Lower Range).
In said apparatus circular flow process, the run-down pipe of container need keep opening-wide state, and the heat-insulation layer of container needs complete.When adopting the said equipment to carry out saturated vapor dryness measurement, the superheated vapor with certain pressure is imported the steam ejector arranged above container---penetrate vapour vapor extractor, nozzle wherein adopts contracting-expanding nozzle, it can make jet expansion steam flow speed up to 1000m/s, pressure energy is become kinetic energy, make height of formation vacuum in mixing chamber, saturated vapour to be measured is sucked into mixing chamber, brought into diffuser pipe by high speed steam flow, in diffuser pipe, the kinetic energy of mixing gas becomes pressure energy, the top hole pressure of diffuser pipe is a little more than atmospheric pressure, saturated vapour to be measured enters in the water of container, carry out mixed heat transfer.Steam phase transformation cooling in container is condensed into water, release heat, and principle is:
(1), when passing into superheated vapor, the temperature of superheated vapor, pressure and flow are monitored;
(2) dry steam in saturated vapour to be measured and the superheated vapor release latent heat of vaporization condense into saturation water, and in the process, phase transition temperature is constant;
(3) saturation water that the saturation water that the saturation water in saturated vapour to be measured and dry steam wherein condense into, superheated vapor condense into and the water mixing heat release in container;
(4) after circular flow a period of time, saturated vapour to be measured and superheated vapor condense, heat release, water level in container, temperature rise, the increase of water volume from container and the gross mass of saturated vapour to be measured and superheated vapor, the quality of the superheated vapor therefrom measured in deduction step (1) namely obtains the quality of saturated vapour to be measured; The change calculations of water temperature goes out the heat of saturated vapour to be measured and superheated vapor release from container, therefrom deducts the heat of superheated vapor release, namely obtains the heat of saturated vapour to be measured release;
(5) utilize the water level in container, the Changing Pattern of temperature calculates saturated vapor dryness by host computer according to Thermodynamics Formulas.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. penetrate vapour to draw gas a saturated vapor dryness measurement mechanism, it is characterized in that, this device comprises:
Container, for holding a certain amount of water, the water yield is advisable can reach water-level gauge Lower Range;
Penetrate vapour vapor extractor, one end passes into superheated vapor, under the other end passes into the water level of container, and arranges saturated vapour import to be measured thereon, is formed vacuum by flow of superheated steam and is drawn by saturated vapour to be measured penetrating in vapour vapor extractor;
The pipeline that superheated vapor is set with penetrate vapour vapor extractor and be connected, and on the pipeline of superheated vapor, throttling orifice plate is set for measuring flow, with the differential pressure transmitter that throttling orifice plate is supporting, flow signal is transmitted; The pipeline of superheated vapor is gone back set temperature sensor and pressure unit be respectively used to measure the temperature of superheated vapor and vapour pressure and temperature, pressure signal is transmitted;
Water level takes into account the differential pressure transmitter supporting with it, to be arranged on container for the change of sensed water level and water level signal to be transmitted;
Temperature sensor, is arranged in container, for measuring the temperature of water and being transmitted by temperature signal;
Tensimeter and the pressure unit supporting with it, be arranged on the pipeline of saturated vapour to be measured, for measuring the pressure of saturated vapour to be measured and being transmitted by pressure signal;
Host computer, is connected with differential pressure transmitter, pressure unit and temperature sensor by input end, for parameter collection and store.
2. penetrate vapour as claimed in claim 1 to draw gas saturated vapor dryness measurement mechanism, it is characterized in that, the pipeline of superheated vapor and penetrate between vapour vapor extractor and set gradually gate valve and reverse checkvalve.
3. penetrate vapour as claimed in claim 1 to draw gas saturated vapor dryness measurement mechanism, it is characterized in that, described vapour vapor extractor of penetrating comprises the nozzle be connected successively according to admission direction, mixing chamber and diffuser pipe, mixing chamber arranges non-return flap be connected with the conveyance conduit of saturated vapour to be detected, the superheated vapor with certain pressure enters nozzle, this nozzle adopts contracting-expanding nozzle, jet expansion steam flow speed can be made up to 1000m/s, pressure energy is become kinetic energy, make height of formation vacuum in mixing chamber, saturated vapour to be measured is sucked into mixing chamber, brought into diffuser pipe by high speed steam flow, in diffuser pipe, the kinetic energy of mixing gas becomes pressure energy, the top hole pressure of diffuser pipe is a little more than atmospheric pressure, saturated vapour to be measured enters in the water of container, when superheated vapor stops, non-return flap is closed automatically, prevent the aqueous reflux in container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420526592.6U CN204203149U (en) | 2014-09-11 | 2014-09-11 | One is penetrated vapour and to be drawn gas saturated vapor dryness measurement mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420526592.6U CN204203149U (en) | 2014-09-11 | 2014-09-11 | One is penetrated vapour and to be drawn gas saturated vapor dryness measurement mechanism |
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| CN204203149U true CN204203149U (en) | 2015-03-11 |
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| CN201420526592.6U Expired - Fee Related CN204203149U (en) | 2014-09-11 | 2014-09-11 | One is penetrated vapour and to be drawn gas saturated vapor dryness measurement mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136857A (en) * | 2015-09-30 | 2015-12-09 | 东南大学 | Method for measuring moisture supersaturation degree and device of method |
-
2014
- 2014-09-11 CN CN201420526592.6U patent/CN204203149U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136857A (en) * | 2015-09-30 | 2015-12-09 | 东南大学 | Method for measuring moisture supersaturation degree and device of method |
| CN105136857B (en) * | 2015-09-30 | 2017-10-31 | 东南大学 | A kind of method and its device for measuring steam degree of supersaturation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20160911 |
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| CF01 | Termination of patent right due to non-payment of annual fee |