CN206161413U - Natural gas online analysis device - Google Patents
Natural gas online analysis device Download PDFInfo
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- CN206161413U CN206161413U CN201620932846.3U CN201620932846U CN206161413U CN 206161413 U CN206161413 U CN 206161413U CN 201620932846 U CN201620932846 U CN 201620932846U CN 206161413 U CN206161413 U CN 206161413U
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- natural gas
- liquefied natural
- pipeline
- line analysis
- analysis device
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Abstract
The utility model discloses a natural gas online analysis device, online analysis module in including liquefied natural gas gas holder, the liquefied natural gas vaporization subassembly that connects gradually by the pipeline and locating analys room, liquefied natural gas vaporization subassembly includes pipeline and the heat band of winding on the pipeline, the online analysis module includes chromatograph and water analysis appearance, be equipped with the liquefied natural gas outlet valve on the liquefied natural gas gas holder, the liquefied natural gas outlet valve is connected to chromatograph and water analysis appearance in proper order respectively behind liquefied natural gas vaporization subassembly and analys room import valve. The utility model discloses change the liquified natural gas into and send into the instrument behind the gaseous state and carry out the analysis, improve the accuracy of natural gas analysis, easy operation, safety ring protects.
Description
Technical field
Utility model is related to gas analysis field, and in particular to a kind of on-line analysis device for natural gas gas.
Background technology
In prior art, natural gas is compressed, become liquid after cooling, becomes liquefied natural gas (abbreviation LNG).Liquefaction day
So gas is commonly stored in cryogenic tank, and its volume is about the 1/600 of same amount gaseous natural gas volume, with compressed natural gas (CNG)
Compare, compression ratio is about high 3 times, is easy to by vehicles long distance transportation.Since 20 century 70s, world's liquefaction is natural
Gas yield and volume of trade increase sharply.China builds big and small various liquefied natural gas plants, and from external a large amount of imports
LNG.LNG can be used on generating, glass and ceramic manufacture, small and medium-sized cities domestic gas, the standby peak regulation of big and medium-sized cities natural gas and LNG
The aspects such as automobile.With continuous growth of the country to energy demand, energy resource structures of the LNG to optimization China, the effectively solving energy
The problems such as supply security, ecological environmental protection, realize that economic and society sustainable development plays an important role.
In gas deliquescence process, natural gas is needed through dehydration, de- hydrocarbon (weight hydrocarbon), removing sour gas
Process, for certain form of natural gas, it is also possible to need through processes such as desulfurization, demercuration, de- benzene, then could be using deep
Cold technique makes it become liquid.LNG product generally need could be used after gasification, and its constituent decides the close of it
The parameters closely related with product quality such as degree, calorific value and rate of gasification.
In liquefied natural gas, main component methane volumetric percentage composition accounts for more than 90%, also containing a small amount of ethane, propane, nitrogen
With other micro constitutents.At present, the process analysis procedure analysis such as the supplied materials analysis of natural gas and production, finished product is faced with many problems, first
Be the real effectiveness of sampling, take the gas phase of liquified natural gas, can not reflecting liquid natural gas completely true component, because
This, will take liquid natural gas and be analyzed.However, conventional analytical instrument can only analyze gaseous products, so, liquid natural gas
First to be changed into gaseous state, enter back into analytical instrument and be analyzed.
The content of the invention
Goal of the invention of the present utility model is to provide a kind of natural gas on-line analysis device, and liquified natural gas is changed into into gas
Instrument is sent into after state to be analyzed, and improves the accuracy of Natural Gas Analysis, simple to operate, safety and environmental protection.
To achieve the above object of the invention, the technical solution adopted in the utility model is：A kind of natural gas on-line analysis device,
Including the liquefied natural gas air accumulator, liquefied natural gas vaporization component being sequentially connected by pipeline and located at online point of analysis interior
Analysis module, the liquefied natural gas vaporization component includes pipeline and the heating tape being wrapped on pipeline, the on-line analysis module
Including chromatograph and moisture analyser, the liquefied natural gas air accumulator is provided with liquefied natural gas outlet valve, the liquefaction day
So gas outlet valve sequentially passes through and chromatograph and moisture point is connected respectively to after liquefied natural gas vaporization component and analysis room's inlet valve
Analyzer.
Above, the moisture analyser can adopt moisture Halo analyzers.
Preferably, the exit of the liquefied natural gas vaporization component is additionally provided with the first branch pipe(tube), first branch pipe(tube)
It is provided with safety valve.
Preferably, the pipeline of the liquefied natural gas vaporization component is provided with pressure gauge and thermometer.
Preferably, it is additionally provided with filter between analysis room's inlet valve and on-line analysis module.
Further, the second branch pipe(tube) is provided between the filter and on-line analysis module, on second branch pipe(tube)
It is provided with nitrogen inlet valve.
Further, the pipeline for being connected to the on-line analysis module is provided with purge vent check valve.
Preferably, the first emptying check valve is connected with after the chromatograph；It is connected with second after the moisture analyser to put
Empty check valve.
Because above-mentioned technical proposal is used, the utility model has compared with prior art following advantages：
1. the utility model overcomes the problem that cannot ensure the real effectiveness that liquefied natural gas is sampled in prior art,
It is analyzed sending in on-line analysis module after liquefied natural gas vaporization, therefore the impurity content in Accurate Determining natural gas,
It is simple to operation；
2. the utility model adds nitrogen intake valve and purge vent check valve between filter and on-line analysis module,
Before being analyzed to natural gas, first pipe-line system is purged with nitrogen, and purge gas are passed through purge vent list
To valve emptying, the impact of accuracy of the foreign gas present in pipe-line system to analyzing is prevented effectively from.
Description of the drawings
Fig. 1 is the utility model structural representation in embodiment one.
Wherein：1st, liquefied natural gas air accumulator；2nd, liquefied natural gas vaporization component；3rd, heating tape；4th, chromatograph；5th, moisture
Halo analyzers；6th, liquefied natural gas outlet valve；7th, analysis room's inlet valve；8th, safety valve；9th, pressure gauge；10th, thermometer；11、
Filter；12nd, nitrogen inlet valve；13rd, purge vent check valve；14th, the first emptying check valve；15th, the second emptying check valve.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
Embodiment one：
It is shown in Figure 1, a kind of natural gas on-line analysis device, including the liquefied natural gas gas storage being sequentially connected by pipeline
Tank 1, liquefied natural gas vaporization component 2 and the on-line analysis module located at analysis interior, the liquefied natural gas vaporization component bag
Pipeline and the heating tape 3 being wrapped on pipeline are included, is heated by heating tape and is caused liquefied natural gas vaporization, the on-line analysis mould
Block includes chromatograph 4 and moisture Halo analyzers 5, and the liquefied natural gas air accumulator is provided with liquefied natural gas outlet valve 6, institute
State liquefied natural gas outlet valve, liquefied natural gas vaporization component, analysis room's inlet valve 7 to be sequentially connected, analysis room's inlet valve 7 again with
Filter 11 connects, and is then separately connected to chromatograph and moisture Halo analyzers.
It is the security of lifting device in the present embodiment, is additionally provided with the exit of the liquefied natural gas vaporization component
First branch pipe(tube), first branch pipe(tube) is provided with safety valve 8, meanwhile, enter with analysis room in the liquified natural gas vaporizer
Pressure gauge 9 and thermometer 10 are provided between mouth valve, whether have exception with the pressure and temperature in monitoring device.
Be additionally provided with filter 11 between analysis room's inlet valve and on-line analysis module, for filtering out gas in
Grain thing impurity, in order to avoid particulate matter Failure analysis instrument.
It is noted that the second branch pipe(tube) is provided between the filter and on-line analysis module, second arm
Road is provided with nitrogen inlet valve 12, and the pipeline for being connected to the on-line analysis module is provided with purge vent check valve 13, right
Before natural gas is analyzed, need first to open nitrogen inlet valve, pipe-line system is purged with nitrogen, in order to avoid have impurity gas
Body produces interference to testing gas, and purge gas are vented by purge vent check valve, and then natural gas to be measured is introduced
Carry out the analysis test of light component and moisture, the waste gas tested point in chromatograph and moisture Halo analyzers to natural gas respectively
The second emptying check valve 15 after the first emptying check valve 14 and moisture Halo analyzers not after chromatograph is vented.
It is pointed out that in all pipelines of the present utility model, on the basis of the flow direction of natural gas, in analysis room's import
Pipeline before valve adopts 1/4 inch line；Pipeline after analysis room's inlet valve adopts 1/8 inch line.In liquid
Changing in natural gas air accumulator has two sampling pipes, and liquefied natural gas is removed on the top for reaching liquefied natural gas air accumulator
Gas phase, another bottom for reaching liquefied natural gas air accumulator goes the liquid phase of liquefied natural gas, two sampling pipes to pass through respectively
Two liquefied natural gas outlet valves are controlled switching.
Claims (7)
1. a kind of natural gas on-line analysis device, it is characterised in that：Including the liquefied natural gas air accumulator being sequentially connected by pipeline,
Liquefied natural gas vaporization component and the on-line analysis module located at analysis interior,
The liquefied natural gas vaporization component includes pipeline and the heating tape being wrapped on pipeline；
The on-line analysis module includes chromatograph and moisture analyser；
The liquefied natural gas air accumulator is provided with liquefied natural gas outlet valve, and the liquefied natural gas outlet valve, liquefaction are natural
Gas vaporization component, analysis room's inlet valve are sequentially connected, the port of export of analysis room's inlet valve by pipeline respectively with chromatograph and water
Divide analyzer connection.
2. natural gas on-line analysis device according to claim 1, it is characterised in that：The liquefied natural gas vaporization component
Exit be additionally provided with the first branch pipe(tube), first branch pipe(tube) is provided with safety valve.
3. natural gas on-line analysis device according to claim 1, it is characterised in that：The liquefied natural gas vaporization component
Pipeline be provided with pressure gauge and thermometer.
4. natural gas on-line analysis device according to claim 1, it is characterised in that：Analysis room's inlet valve with it is online
Filter is additionally provided between analysis module.
5. natural gas on-line analysis device according to claim 4, it is characterised in that：The filter and on-line analysis mould
The second branch pipe(tube) is provided between block, second branch pipe(tube) is provided with nitrogen inlet valve.
6. natural gas on-line analysis device according to claim 5, it is characterised in that：It is connected to the on-line analysis module
Pipeline be provided with purge vent check valve.
7. natural gas on-line analysis device according to claim 1, it is characterised in that：First is connected with after the chromatograph
Emptying check valve；The second emptying check valve is connected with after the moisture analyser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620932846.3U CN206161413U (en) | 2016-08-24 | 2016-08-24 | Natural gas online analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620932846.3U CN206161413U (en) | 2016-08-24 | 2016-08-24 | Natural gas online analysis device |
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| Publication Number | Publication Date |
|---|---|
| CN206161413U true CN206161413U (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620932846.3U Active CN206161413U (en) | 2016-08-24 | 2016-08-24 | Natural gas online analysis device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682986A (en) * | 2019-02-18 | 2019-04-26 | 哈尔滨天龙仪器制造有限公司 | A kind of device for sampling quantitative gas capable of washing |
| CN111024829A (en) * | 2018-10-09 | 2020-04-17 | 中国石油天然气股份有限公司 | Natural gas quality detection system and method |
-
2016
- 2016-08-24 CN CN201620932846.3U patent/CN206161413U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024829A (en) * | 2018-10-09 | 2020-04-17 | 中国石油天然气股份有限公司 | Natural gas quality detection system and method |
| CN109682986A (en) * | 2019-02-18 | 2019-04-26 | 哈尔滨天龙仪器制造有限公司 | A kind of device for sampling quantitative gas capable of washing |
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