CN207730755U - Liquid nitrogen frozen hydrate sample decomposes gas quantitative sample injection system - Google Patents
Liquid nitrogen frozen hydrate sample decomposes gas quantitative sample injection system Download PDFInfo
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- CN207730755U CN207730755U CN201820124808.4U CN201820124808U CN207730755U CN 207730755 U CN207730755 U CN 207730755U CN 201820124808 U CN201820124808 U CN 201820124808U CN 207730755 U CN207730755 U CN 207730755U
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- sample
- gas
- carbon dioxide
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- cabin
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000007789 gas Substances 0.000 title claims abstract description 86
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 title claims abstract description 30
- 238000002347 injection Methods 0.000 title claims abstract description 14
- 239000007924 injection Substances 0.000 title claims abstract description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 122
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 60
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 60
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000010521 absorption reaction Methods 0.000 claims abstract description 33
- 239000000243 solution Substances 0.000 claims abstract description 21
- 150000004677 hydrates Chemical class 0.000 claims abstract description 14
- 239000012159 carrier gas Substances 0.000 claims abstract description 12
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 48
- 238000007789 sealing Methods 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 8
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 2
- 229960004424 carbon dioxide Drugs 0.000 claims 9
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000009102 absorption Effects 0.000 description 25
- 108010066057 cabin-1 Proteins 0.000 description 17
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 13
- 238000010494 dissociation reaction Methods 0.000 description 8
- 230000005593 dissociations Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses a kind of liquid nitrogen frozen hydrate samples to decompose gas quantitative sample injection system, including at least the carbon dioxide absorption pond in the sample decomposition cabin for storing gas hydrates sample and the solution for storing absorption, dissolved carbon dioxide gas；Sample decompose cabin be additionally provided with carbon dioxide channel, outlet passageway, for detect sample decompose cabin in methane content methane detector and for detect sample decompose cabin in pressure and temperature pressure measuring unit and temperature measuring equipment；The external carbon dioxide gas in carbon dioxide channel；Sample decomposes cabin and is connected by being communicated in the second channel of outlet passageway with carbon dioxide absorption pond；Carbon dioxide absorption pond upper end is additionally provided with third channel, and third channel is connected to carrier gas inlet channel and gas quantitative loop.The utility model is simple in structure, easy to operate, and testing result is reliable and stable.
Description
Technical field
The utility model is related to a kind of gasometry sampling systems more particularly to a kind of liquid nitrogen frozen hydrate sample to decompose
Gasometry sampling system.
Background technology
Gas hydrates are also known as " combustible ice ", are distributed widely in the permafrost of halmeic deposit or land-based area, naturally
Gas and water can form the crystalline material of class ice-like under the conditions of high pressure low temperature, because of its appearance as ice and to meet fire i.e. flammable
It burns, so also referred to as " combustible ice ".Its Resource Density is high, and distribution on global is extensive, has high resource value, thus becomes
The hot spot that oil and gas industry circle studies for a long period of time.
With the continuous development of China's economic strength and science and technology, ocean gas hydrate tune is being greatly developed
It looks into.In May, 2017, the success of China Seas gas hydrates pilot production for the first time, on November 3rd, 2017, State Council's official approval will
Gas hydrates are classified as new mineral, become the 173rd, China mineral.
Since gas hydrates are extremely easy in decomposition into water and natural gas at normal temperatures and pressures, so laboratory preservation is natural
Gas hydrate sample needs to be put in freezen protective in liquid nitrogen (under normal pressure, liquid nitrogen temperature is -196 DEG C).The day of unit mass
The gas volume that right gas hydrate sample discharges when decomposing, is the important indicator for weighing gas hydrates purity, for seabed
The assessment of stock number is of great significance.
According to theoretical calculation, 1 cubic metre of combustible ice can be converted into 164 cubic metres of natural gas and 0.8 cubic metre of water.But
It is that when being taken out due to the gas hydrates of the freezen protective in liquid nitrogen, a certain amount of liquid nitrogen can be attached to, liquid nitrogen volatilization releases
A large amount of nitrogen, these nitrogen can be mixed into the gas of gas hydrate dissociation release, measurement result can be caused deviation occur.
Therefore, there is an urgent need for study a kind of to release the nitrogen in liquid nitrogen with gas hydrate dissociation by those skilled in the art
The gas separation put, and the system of the gas progress quantitative sampling to gas hydrate dissociation release.
Utility model content
In view of the drawbacks described above of the prior art, the utility model proposes a kind of simple in structure, easy to operate, performances can
It leans on, the system that the gas of release carries out quantitative sample injection can be decomposed to the gas hydrates sample that liquid nitrogen frozen preserves.
A kind of liquid nitrogen frozen hydrate sample decomposition gas quantitative sample injection system, including at least for storing natural gas hydration
The sample of object sample decomposes the carbon dioxide absorption pond in cabin and the solution for storing absorption, dissolved carbon dioxide gas；It is described
Sample decomposes cabin and is additionally provided with carbon dioxide channel, outlet passageway, the first for detecting methane content in sample decomposition cabin
Alkane detector and the pressure measuring unit and temperature measuring equipment that pressure and temperature in cabin is decomposed for detecting sample；The carbon dioxide into
The external carbon dioxide gas in gas channel；The sample decomposition connects outlet passageway out of my cabin, and the sample decomposes cabin and the titanium dioxide
Carbon absorption pond is connected by being communicated in the second channel of the outlet passageway；Carbon dioxide absorption pond upper end is also set up
There are third channel, the third channel to be connected to carrier gas inlet channel and gas quantitative loop；The gasometry ring passes through gas
Sample intake passage is connected with analytical instrument.
In some embodiments, the sample decomposes and is provided with sealing cover, the methane measuring instrument, institute at the top of cabin
It states temperature measuring equipment and the pressure measuring unit is respectively arranged on the sealing cover.
In some embodiments, the carbon dioxide channel is located at the bottom that the sample decomposes cabin, institute
State opening and the control valve closed being provided in inlet channel for controlling the inlet channel；The outlet passageway is located at institute
It states on sealing cover；
In some embodiments, the first triple valve is provided between the outlet passageway and the second channel,
The outlet pipe for being connected to sample decomposition cabin is divided into first passage and exhaust passage by first triple valve.
In some embodiments, the third channel, the carrier gas inlet channel and gas quantitative loop pass through
Two threeways are connected.
In some embodiments, the solution in the carbon dioxide absorption pond is sodium hydroxide solution.
In some embodiments, a concentration of the 40% of the sodium hydroxide solution.
The beneficial effects of the utility model：
The said structure design of the utility model, the volatilization temperature for fully taking into account liquid nitrogen is -196 DEG C, and water under normal pressure
The characteristic that object decomposition temperature is -45 DEG C is closed, due to there is the huge temperature difference between the two, so as to by means of inlet channel
The carbon dioxide being passed through so that the nitrogen that the liquid nitrogen volatilization that sample is taken out of generates and the gas that gas hydrate dissociation discharges are complete
It is fully separating, and after being completely exhausted out nitrogen noresidue is fully reacted with the sodium hydroxide absorbed in cabin.In addition, close by being set to
Temperature, pressure and the methane content that the detection device of capping can easily decompose sample the gas in cabin carry out accurately
It measures.
Inlet channel is set to the bottom that sample decomposes cabin, takes full advantage of carbon dioxide by above-mentioned structure design
Density is more than the physical characteristic of nitrogen, it is ensured that the nitrogen that sample decomposes in cabin is completely exhausted out, and ensure that the standard of measurement result
True property.
The system of the utility model, due to being passed through for carbon dioxide gas, it is ensured that the nitrogen and day taken out of in liquid nitrogen
The gas that right gas hydrate decomposes release is kept completely separate, and fully anti-with the sodium hydroxide solution in absorption cabin after taking nitrogen out of
Noresidue is answered, the accuracy of measurement result is further ensured.
The sampling system of the utility model, due to the setting of gasometry ring, it is ensured that determine that the gas of amount enters and divide
Analyzer device, and the amount into the gas of analytical instrument can be controlled by replacing the size of quantitative loop, simplify post analysis
The process of calculating, improves work efficiency, and has saved the time.
The technique effect of the design of the utility model, concrete structure and generation is made furtherly below with reference to attached drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Description of the drawings
Fig. 1 is the structural schematic diagram of one embodiment of the utility model.
Specific implementation mode
As shown in Figure 1, present embodiment discloses a kind of liquid nitrogen frozen hydrate samples to decompose gas quantitative sample injection system, packet
It includes the sample for storing gas hydrates sample and decomposes cabin 1 and the solution for storing absorption, dissolved carbon dioxide gas
Carbon dioxide absorption pond 2.
As shown in Figure 1, sample, which decomposes cabin 1, is additionally provided with inlet channel 15 and outlet passageway, wherein inlet channel 15 is located at
Sample decomposes the bottom in cabin 1, and the opening for controlling inlet channel and the control valve 17 closed are provided in inlet channel 15.Go out
Gas channel is set on sealing cover 11,15 external carbon dioxide gas of inlet channel.The carbon dioxide gas being passed through from inlet channel 6
Temperature is relatively high, and the gas hydrates sample in sample chamber can be promoted to be rapidly heated, be conducive to its decomposition.
The first triple valve 5 is provided between outlet passageway and second channel.First triple valve 5 will be connected to sample and decompose cabin
1 outlet pipe is divided into first passage 16 and exhaust passage 4,2 external second channel 21 of carbon dioxide absorption pond, second channel
21 decompose cabin 1 by the first triple valve 5 with sample is connected, and carbon dioxide gas can be decomposed by second channel 21 from sample
Cabin 1 enters carbon dioxide absorption pond 2.By controlling opening and the closing of the first triple valve 5, first passage 16, row can be controlled
It gas channel 4 and is connected to conducting between the second channel 21 in carbon dioxide absorption pond 2 and closes.
Sample decomposes cabin 1 and is additionally provided with for detecting the methane detector 12 of methane content in sample decomposition cabin 1 and using
The pressure measuring unit 13 of pressure and temperature and temperature measuring equipment 14 in cabin 1 are decomposed in detection sample for the ease of the installation of device to be convenient for
Operation, the top that cabin 1 is decomposed in sample are provided with sealing cover 11, outlet passageway, methane measuring instrument 12, temperature measuring equipment 14 and pressure measurement
Device 13 is respectively arranged on sealing cover 11.
2 upper end of carbon dioxide absorption pond is additionally provided with third channel 32, and third channel 32 and carrier gas inlet channel 7 are gentle
Body quantitative loop 3 is connected to.One end of third channel 32, carrier gas inlet channel 7 and gasometry ring 3 passes through 6 phase of the second triple valve
Connection, the other end of gasometry ring 3 are connected by gas sampling channel 31 with analytical instrument 8.The second triple valve 6 is adjusted,
The conducting between third channel 32, carrier gas inlet channel 7 and gasometry ring 3 and closed state can be controlled.
In the utility model, it can be discharged to meet different detections to decomposing by replacing the quantitative loop of different volumes
The different of gas volume need, and it is convenient to replace, broad covered area.
The said structure design of the utility model, the volatilization temperature for fully taking into account liquid nitrogen is -196 DEG C, and water under normal pressure
The characteristic that object decomposition temperature is -45 DEG C is closed, due to there is the huge temperature difference between the two, so as to by means of inlet channel
The carbon dioxide being passed through so that the nitrogen that the liquid nitrogen volatilization that sample is taken out of generates and the gas that gas hydrate dissociation discharges are complete
It is fully separating, and keep extra carbon dioxide fully anti-with the sodium hydroxide in carbon dioxide absorption pond after being completely exhausted out nitrogen
It answers.In addition, can easily decompose temperature, the pressure of the gas in cabin to sample by being set to the detection device of sealing cover
And methane content is accurately measured.
15 external carbon dioxide gas of carbon dioxide channel, 2 memory of carbon dioxide absorption pond are placed with for absorbing, are molten
Solve the sodium hydroxide solution of carbon dioxide.The concentration of sodium hydroxide solution is bigger, is more conducive to the absorption of carbon dioxide, but with hydrogen
The increase of sodium hydroxide solution concentration also enhances the corrosion of device, a concentration of by largely constantly testing and considering
40% sodium hydroxide solution is optium concentration.
Second channel 21 is inserted into the bottom in carbon dioxide absorption pond 2, and third channel 32 is located at the top in carbon dioxide absorption pond 2
Portion so that be fully absorbed from the carbon dioxide in the gas that second channel 21 is discharged, remaining gas is logical completely into third
Road 32.
In above-mentioned structure design, inlet channel 15 is set to the bottom that sample decomposes cabin 1, takes full advantage of titanium dioxide
The density of carbon is more than the physical characteristic of nitrogen, it is ensured that the nitrogen that sample decomposes in cabin is completely exhausted out, and ensure that measurement result
Accuracy.
In other embodiments, sodium hydroxide solution can also be selected dense between 30%-45% according to specific circumstances
Degree.
The operation principle that the liquid nitrogen frozen hydrate sample of the present embodiment decomposes gas quantitative sample injection system is as follows：
1) sodium hydroxide solution that a concentration of 40% is poured into carbon dioxide absorption pond 2 waits for that carbon dioxide absorption pond 2 is filled
Man Hou makes carbon dioxide absorption pond 2 be in sealing state.
2) sealing cover 11 that sample decomposes cabin 1 is opened, gas hydrates sample is taken out in liquid nitrogen container, is placed in sample
The bottom for decomposing cabin 1, covers sealing cover 11, connects external pipe.
3) carbon dioxide channel 15 is opened, the first triple valve 5 is adjusted, first passage 16 is made to be connected to exhaust passage 4,
First passage 16 is disconnected with second channel 21.Then, two are continually fed into sample chamber 1 by carbon dioxide channel 15
Carbon oxide gas.In the process, since the boiling point of liquid nitrogen (- 196 DEG C) is well below gas hydrate dissociation under normal pressure
Temperature (- 45 DEG C), and the density of carbon dioxide is more than the density of nitrogen, so liquid nitrogen preferential volatilization subsidiary in sample is at nitrogen
Then gas is decomposed the carbon dioxide gas being continually fed into cabin 1 toward sample from inlet channel 15 and is taken out of, passes through exhaust passage 4
Discharge.When liquid nitrogen volatilizees completely, sample, which decomposes temperature in cabin 1, to be risen；
4) continue to rise as sample decomposes temperature in cabin 1, gas hydrates sample starts to decompose, and discharge methane
Gas.When methane detector 12 starts to detect that sample decomposes methane content sharp increase in gas in cabin 1, you can think natural gas
Hydrate sample starts to decompose.At this point, as shown in Figure 1, the first triple valve 5 of adjusting, makes between first passage 16 and exhaust passage 4
It disconnects, while first passage 16 being allowed to be connected to second channel 21.
At this point, at this moment, the gas that gas hydrate dissociation releases, by from carbon dioxide channel 15 toward sample
1 carbon dioxide gas being continually fed into is taken out of in cabin, respectively by first passage 16, the first triple valve 5 and second channel 21 into
Enter carbon dioxide absorption pond 2.Since 40% sodium hydroxide solution in carbon dioxide absorption pond 2 has by force carbon dioxide gas
Strong absorption, and gas is imported from bottom in the carbon dioxide absorption pond 2, top discharge, in the process with 40%
Sodium hydroxide solution comes into full contact with, so i.e. it is believed that carbon dioxide gas is led to by all absorptions of the sodium hydroxide solution in pond
The gas for crossing third channel 32 all is from the gas that release generates when gas hydrates sample decomposes.
5) the second triple valve 6 is adjusted so that be closed between third channel 32 and carrier gas inlet channel 7, third
It is in the conduction state between channel 32, gasometry ring 3,3 gas are entered by the second triple valve 6 by the gas of third channel 32
Body quantitative loop.
After the gas that gasometry ring 3 is discharged full of gas hydrate dissociation, the second triple valve 6 is adjusted, carrier gas is made
Inlet channel 7 is connected to gasometry ring 3, while carrier gas inlet channel 7 being made to be disconnected with third channel 32.At this moment in carrier gas
Under effect, quantitative gas in gasometry ring 3 passes through the gas sampling that is connected between gasometry ring 3 and analytical instrument 8
Channel 31 enters analytical instrument 8.
The sampling system of the utility model, due to the setting of gasometry ring, it is ensured that determine that the gas of amount enters and divide
Analyzer device, and the amount into the gas of analytical instrument can be controlled by replacing the size of quantitative loop, simplify post analysis
The process of calculating, improves work efficiency, and has saved the time.
The preferred embodiment of the utility model described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to the design of the utility model in domain
Available technical solution is tested, it all should be in the protection domain being defined in the patent claims.
Claims (7)
1. a kind of liquid nitrogen frozen hydrate sample decomposes gas quantitative sample injection system, which is characterized in that including at least for storing
The sample of gas hydrates sample decomposes cabin and the carbon dioxide of the solution for storing absorption, dissolved carbon dioxide gas is inhaled
Receives pond；The sample decomposes cabin and is additionally provided with carbon dioxide channel, outlet passageway, decomposes methane in cabin for detecting sample
The methane detector of content and the pressure measuring unit and temperature measuring equipment that pressure and temperature in cabin is decomposed for detecting sample；Described two
The external carbon dioxide gas of carbonoxide inlet channel；The sample decomposition connects outlet passageway out of my cabin, and the sample decomposes cabin and institute
It states carbon dioxide absorption pond and is connected by being communicated in the second channel of the outlet passageway；Carbon dioxide absorption pond upper end
Portion is additionally provided with third channel, and the third channel is connected to carrier gas inlet channel and gas quantitative loop；The gasometry ring
It is connected with analytical instrument by gas sampling channel.
2. liquid nitrogen frozen hydrate sample as described in claim 1 decomposes gas quantitative sample injection system, which is characterized in that described
Sample decomposes and is provided with sealing cover at the top of cabin, and the methane measuring instrument, the temperature measuring equipment and the pressure measuring unit are respectively set
In on the sealing cover.
3. liquid nitrogen frozen hydrate sample as claimed in claim 1 or 2 decomposes gas quantitative sample injection system, which is characterized in that
The carbon dioxide channel is located at the bottom that the sample decomposes cabin, is provided in the inlet channel described for controlling
The opening of inlet channel and the control valve closed.
4. liquid nitrogen frozen hydrate sample as claimed in claim 3 decomposes gas quantitative sample injection system, which is characterized in that described
Outlet passageway is located on sealing cover, is provided with the first triple valve between the outlet passageway and the second channel, and described first
The outlet pipe for being connected to sample decomposition cabin is divided into first passage and exhaust passage by triple valve.
5. liquid nitrogen frozen hydrate sample as claimed in claim 4 decomposes gas quantitative sample injection system, which is characterized in that described
Third channel, the carrier gas inlet channel are connected with gas quantitative loop by the second threeway.
6. liquid nitrogen frozen hydrate sample as described in claim 1 decomposes gas quantitative sample injection system, which is characterized in that described
Solution in carbon dioxide absorption pond is sodium hydroxide solution.
7. liquid nitrogen frozen hydrate sample as claimed in claim 6 decomposes gas quantitative sample injection system, which is characterized in that described
A concentration of the 40% of sodium hydroxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820124808.4U CN207730755U (en) | 2018-01-25 | 2018-01-25 | Liquid nitrogen frozen hydrate sample decomposes gas quantitative sample injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820124808.4U CN207730755U (en) | 2018-01-25 | 2018-01-25 | Liquid nitrogen frozen hydrate sample decomposes gas quantitative sample injection system |
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| Publication Number | Publication Date |
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| CN207730755U true CN207730755U (en) | 2018-08-14 |
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| CN201820124808.4U Expired - Fee Related CN207730755U (en) | 2018-01-25 | 2018-01-25 | Liquid nitrogen frozen hydrate sample decomposes gas quantitative sample injection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318655A (en) * | 2018-01-25 | 2018-07-24 | 广州海洋地质调查局 | Liquid nitrogen frozen hydrate sample decomposes gas quantitative sample injection system |
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2018
- 2018-01-25 CN CN201820124808.4U patent/CN207730755U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318655A (en) * | 2018-01-25 | 2018-07-24 | 广州海洋地质调查局 | Liquid nitrogen frozen hydrate sample decomposes gas quantitative sample injection system |
| CN108318655B (en) * | 2018-01-25 | 2023-09-26 | 广州海洋地质调查局 | Liquid nitrogen frozen hydrate sample decomposition gas quantitative sampling system |
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