CN206410958U - A kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics determines device - Google Patents
A kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics determines device Download PDFInfo
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- CN206410958U CN206410958U CN201621407076.7U CN201621407076U CN206410958U CN 206410958 U CN206410958 U CN 206410958U CN 201621407076 U CN201621407076 U CN 201621407076U CN 206410958 U CN206410958 U CN 206410958U
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- nitrogen
- humidifying pot
- constant
- heat
- vapor pressure
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Abstract
Device is determined the utility model discloses a kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics, the device is constituted by gas supply system, constant temperature humidification system, drying system, and by valve, utilidor connection；Nitrogen cylinder outlet pressure is controlled constant by pressure-reducing valve, and rate of discharge is controlled constant by mass flow controller；Nitrogen is introduced into surge tank and is well mixed, and is humidified subsequently into humidifying pot, and water smoke is removed by demister in humidifying pot outlet；By heat-conducting oil heating humidifying pot, PID regulator adjusts the aperture of Heat-transfer Oil Pump, and the nitrogen of control demister outlet, the temperature of saturated steam mixed gas are constant；Hygrometer is drawn to determine that the relative humidity for entering the mixed gas of drying system reaches 1 by Visa, the relative humidity for flowing out the nitrogen of drying system is 0；Humidifying pot, glueballs drier and all connecting pipes are all provided with heat-insulation layer.Measurement result proves that the present apparatus is simple to operate, and measurement result is accurate, and provides certain thinking for the saturated vapor pressure for determining other gases.
Description
Technical field
The utility model is related to pure gas saturated vapor pressure and determines field, and in particular to a kind of survey of nitrogen saturated vapor pressure
Determine device.
Background technology
Within specified temperatures, portable steam vapour amount is certain to gas, when the steam vapour amount carried in gas reaches
During to the limit at this temperature, claim the vapor in gas to reach saturation state, now in mixed gas vapor partial pressure
Power is referred to as the saturated vapor pressure of the gas.The saturated vapor pressure of gas is the Important Property Parameters of gas, by determining gas
Saturated vapor pressure, it is possible to directly calculate the humidity in the relative humidity in gas, such as air.Relative humidity is to determine currently
The important parameter of ambient condition, in engineering, generally requires to know the safe phase that an equipment is run under specific gas environment
To humidity, safe relative humidity will damage equipment if more than, or even occur accident；In meteorological field, especially in short term
In forecast, relative humidity is the significant in value of a judgement precipitation probability.But the device for determining saturated vapor pressure at present is main
Both for neat liquid, not a kind of good device can determine the saturated vapor pressure of pure gas.
The content of the invention
The purpose of this utility model is to provide a kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics and determines device, and it is special
Levy and be：Nitrogen cylinder outlet pressure is controlled constant by pressure-reducing valve, and rate of discharge is controlled constant by mass flow controller；Nitrogen is first
It is well mixed, is humidified subsequently into humidifying pot into surge tank, water smoke is removed by demister in humidifying pot outlet；By leading
Deep fat warming and humidifying tank, PID regulator adjusts the aperture of Heat-transfer Oil Pump, and nitrogen, the saturated steam of the outlet of control demister are mixed
The temperature for closing gas is constant；Hygrometer is drawn to determine that the relative humidity for entering the mixed gas of drying system reaches 1, stream by Visa
The relative humidity for going out the nitrogen of drying system is 0；Humidifying pot, glueballs drier and all connecting pipes are all provided with heat-insulation layer.
Compared with prior art, the beneficial effects of the utility model are：It is of the present utility model a kind of based on engineering thermal
Nitrogen saturated vapor pressure determines device, can be rational in infrastructure with the nitrogen saturated vapor pressure under Accurate Determining different temperatures, behaviour
Make simple, measurement is accurate, and a kind of new approaches are provided for the saturated vapor pressure for determining other gases.
Brief description of the drawings
Fig. 1 is the structural representation that nitrogen saturated vapor pressure determines device.
Embodiment
The utility model provides a kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics and determines device, with reference to attached
The present invention is described further with embodiment for figure.
Fig. 1 show the structural representation that nitrogen saturated vapor pressure determines device.The device includes gas supply system, perseverance
Warm humidification system and drying system, the gas supply system, constant temperature humidification system and drying system pass through valve and insulating tube
Road is connected.Gas supply system includes：Nitrogen cylinder 1, pressure-reducing valve 2 and pressure gauge 3；Constant temperature humidification system includes：Surge tank
4th, mass flow controller 5, humidifying pot 6, demister 7, heat-conducting oil heating case 11, condenser 12, PID regulator 13, electrical heating
Device 14 and Heat-transfer Oil Pump 15；Drying system includes：Hygrometer 9 and glueballs drier 10 are drawn in thermometer 8, Visa.
Specific implementation step：First, close valve A and open valve B, weigh three glueballs dryings respectively with electronic balance
The initial mass of agent 10.Then, the valve of nitrogen cylinder 1 is opened, controls the nitrogen pressure to be by pressure-reducing valve 2 after nitrogen release
1atm, after nitrogen is well mixed in surge tank 4, controls nitrogen flow to be 6L/min by mass flow controller 5.Open heat conduction
The switch of oily electric heater 14, starts Heat-transfer Oil Pump 15,90 DEG C of sets target temperature in PID regulator 13.When thermometer 8
The number of degrees are stable between 89.5 DEG C -90.5 DEG C, when Visa draws the number of degrees of hygrometer 9 stable between 0.95-1, open valve
Door A simultaneously closes valve B, starts timing 5min.At the end of timing, valve B is opened immediately and valve A is closed, with electronic balance point
Also known as take the final mass of three glueballs drier 10.According to Engineering Thermodynamics formula can in the hope of nitrogen at 90 DEG C saturation
Vapour pressure.
By changing the target temperature that PID regulator 13 is set, you can realize that the nitrogen saturation determined under different temperatures is steamed
Vapour pressure.
Claims (1)
1. a kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics determines device, the device is added by gas supply system, constant temperature
Wet system, drying system, and be made up of valve, utilidor connection；It is characterized in that：Nitrogen cylinder outlet pressure is by pressure-reducing valve
Control is constant, and rate of discharge is controlled constant by mass flow controller；Nitrogen is introduced into surge tank and is well mixed, subsequently into
Humidified in humidifying pot, water smoke is removed by demister in humidifying pot outlet；Pass through heat-conducting oil heating humidifying pot, PID regulator regulation
The aperture of Heat-transfer Oil Pump, the nitrogen of control demister outlet, the temperature of saturated steam mixed gas are constant；Draw wet by Visa
Degree meter determines that the relative humidity for entering the mixed gas of drying system reaches 1, and the relative humidity for flowing out the nitrogen of drying system is
0；Humidifying pot, glueballs drier and all connecting pipes are all provided with heat-insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621407076.7U CN206410958U (en) | 2016-12-21 | 2016-12-21 | A kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics determines device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621407076.7U CN206410958U (en) | 2016-12-21 | 2016-12-21 | A kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics determines device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206410958U true CN206410958U (en) | 2017-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621407076.7U Expired - Fee Related CN206410958U (en) | 2016-12-21 | 2016-12-21 | A kind of nitrogen saturated vapor pressure based on Engineering Thermodynamics determines device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206410958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644817A (en) * | 2016-12-21 | 2017-05-10 | 华北电力大学 | Nitrogen saturated steam pressure measuring device based on engineering thermodynamics |
-
2016
- 2016-12-21 CN CN201621407076.7U patent/CN206410958U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644817A (en) * | 2016-12-21 | 2017-05-10 | 华北电力大学 | Nitrogen saturated steam pressure measuring device based on engineering thermodynamics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170815 Termination date: 20181221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |