CN207798822U - The decomposition of liquid nitrogen frozen gas hydrates sample and burner - Google Patents
The decomposition of liquid nitrogen frozen gas hydrates sample and burner Download PDFInfo
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- CN207798822U CN207798822U CN201820127678.XU CN201820127678U CN207798822U CN 207798822 U CN207798822 U CN 207798822U CN 201820127678 U CN201820127678 U CN 201820127678U CN 207798822 U CN207798822 U CN 207798822U
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- sample chamber
- sample
- liquid nitrogen
- detection instrument
- decomposition
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Abstract
The utility model provides decomposition and the burner of a kind of liquid nitrogen frozen gas hydrates sample, the decomposition and burner include sample chamber, balance cabin, air-out apparatus, regulating valve and methane detection instrument, the sample chamber is connected to the balance cabin, and the height in the balance cabin is more than the height of the sample chamber；Described air-out apparatus one end is connected to the sample chamber, and outlet nozzle is arranged in the other end of air-out apparatus；The regulating valve is arranged on the air-out apparatus, and below the outlet nozzle；Methane detection instrument one end is stretched into the sample chamber, and is connected to the sample chamber, and sealing device is provided between the methane detection instrument and the sample chamber.The utility model can by be stored in be mixed with liquid nitrogen freezing gas hydrates sample in nitrogen and gas hydrates sample detach, and simple in structure, easy to operate, dependable performance.
Description
Technical field
The utility model is related to the decomposition of liquid nitrogen frozen gas hydrates sample and field of combustion technology, specifically,
It is related to decomposition and the burner of a kind of liquid nitrogen frozen gas hydrates sample.
Background technology
Gas hydrates are also known as " combustible ice ", are distributed widely in the permafrost of halmeic deposit or land-based area, by day
The crystalline material for the class ice-like that right gas is formed with water under the conditions of high pressure low temperature.Because of its appearance as ice and also meet fire it is 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
Oil and gas industry circle studies for a long period of time hot spot.Since gas hydrates are extremely easy in decomposition at normal temperatures and pressures, so laboratory preserves day
Right gas hydrate sample needs to be put in freezen protective in liquid nitrogen (under normal pressure, liquid nitrogen temperature is -196 DEG C).
The purity of gas hydrates sample is an important indicator in research, and the survey of gas hydrates purity
It is fixed, it needs to take out gas hydrates from liquid nitrogen, places to heat up in a container and decompose, heat up to it gas for decomposing and releasing
Body ingredient is collected, for subsequent experimental determination；Or to the gas ignition that releases of decomposition, by burning severe degree Lai
The preliminary purity for judging gas hydrates sample.
Therefore, when the gas hydrates of freezen protective take out in liquid nitrogen, a certain amount of liquid nitrogen can be carried, liquid nitrogen volatilization is released
A large amount of nitrogen is released, these nitrogen can be mixed into the gas of gas hydrate dissociation release, to seriously affect subsequent grind
Study carefully work.
Utility model content
In order to overcome above-mentioned technical problem, the utility model provides that a kind of can will to be stored in the freezing that is mixed with liquid nitrogen natural
Point for the liquid nitrogen frozen gas hydrates sample that nitrogen and gas hydrates sample in gas hydrate sample are detached
Solution and burner.
To achieve the goals above, the decomposition and burning of liquid nitrogen frozen gas hydrates sample described in the utility model
Device, including sample chamber, balance cabin, air-out apparatus, regulating valve and methane detection instrument, the sample chamber connect with the balance cabin
Logical, the height in the balance cabin is more than the height of the sample chamber；Described air-out apparatus one end is connected to the sample chamber, outlet
Outlet nozzle is arranged in the other end of device；The regulating valve is arranged on the air-out apparatus, and below the outlet nozzle；Institute
It states methane detection instrument one end to stretch into the sample chamber, and is connected to the sample chamber, the methane detection instrument and the sample
Sealing device is provided between cabin.
Preferably, sealing cover is set between the methane detection instrument and the sample chamber, and the sealing cover is around the methane
Described sample chamber one end of stretching into of survey meter is arranged for one week.
Preferably, the decomposition of the liquid nitrogen frozen gas hydrates sample and burner further include oxygen detection
Instrument, oxygen detection instrument one end is stretched into the sample chamber, and is connected to the sample chamber, the oxygen detection instrument with it is described
Sealing cover is set between sample chamber, and the sealing cover is arranged for one week around described sample chamber one end of stretching into of the oxygen detection instrument.
Preferably, the oxygen detection instrument and the methane detection instrument are located at the both sides of the air-out apparatus.
Preferably, the decomposition of the liquid nitrogen frozen gas hydrates sample and burner further include gas flow
Meter, the gas flowmeter are arranged on the air-out apparatus, and below the regulating valve.
Preferably, the decomposition of the liquid nitrogen frozen gas hydrates sample and burner, further include communicating pipe, institute
It states balance cabin to be connected to by communicating pipe with the sample chamber, the both ends of the communicating pipe are located at the balance cabin and the sample
The lower end in product cabin.
Preferably, the balance cabin is arranged in parallel with the sample chamber, the balance bilge portion and the sample chamber bottom
In same horizontal line.
Preferably, the decomposition of the liquid nitrogen frozen gas hydrates sample and burner further include pedestal, described
Balance cabin bottom and the sample chamber bottom be fixedly installed respectively and the pedestal on.
Technical solution provided by the present application can reach following advantageous effect：
The utility model is since under same temperature and pressure, the boiling point of liquid nitrogen is -196 DEG C, and gas hydrates point
The temperature of solution is -45 DEG C, therefore is mixed with liquid nitrogen subsidiary in the gas hydrates sample of liquid nitrogen and is volatilized into nitrogen first, from going out
Gas nozzle is discharged.In this way, the technical issues of just solving the gas that nitrogen can be mixed into gas hydrate dissociation release；Having reached will
The technique effect of nitrogen and the gas phase separation of gas hydrate dissociation release；To ensure the gas hydrates being collected into
The gas purity for decomposing release is higher, is conducive to subsequent research, and by controllable valve (i.e. regulating valve), can make the gas of collection
It burns under controllable state.
Description of the drawings
Fig. 1 is that the decomposition of liquid nitrogen frozen gas hydrates sample described in the utility model and the structure of burner are shown
It is intended to.
Specific implementation mode
Below with reference to the accompanying drawings illustrate the embodiments of the present invention.In an attached drawing of the utility model or a kind of implementation
Elements and features described in mode can be with elements and features shown in one or more other drawings or embodiments
It is combined.It should be noted that for purposes of clarity, attached drawing and it is omitted that unrelated with the utility model, this field is general in illustrating
The expression and description of component or processing known to logical technical staff.
The utility model is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, decomposition and the burner packet of liquid nitrogen frozen gas hydrates sample described in the utility model
Sample chamber 1, balance cabin 2, air-out apparatus 3, regulating valve 4 and methane detection instrument 5, the sample chamber is included with the balance cabin to connect
It is logical, when the nitrogen after volatilizing to liquid nitrogen is detached with the gas that gas hydrate dissociation discharges, need in sample chamber
In fill water, due to sample chamber 1 with balance cabin 2 be connected, allow in this way sample chamber 1 and balance cabin 2 in the water surface it is opposite
Equal in the height of horizontal plane, under same temperature and pressure, the boiling point of liquid nitrogen is -196 DEG C, and gas hydrate dissociation
Temperature is -45 DEG C, so liquid nitrogen subsidiary in sample is volatilized into nitrogen first, the water surface of emerging.Since air-out apparatus 3 includes a bar
Shape structure 31 and an outlet nozzle 32, wherein one end of rod-like structure 31 is connected to sample chamber 1, the other end of rod-like structure 31 with
Outlet nozzle 32 connects；Therefore, emerge the water surface nitrogen first from the outlet nozzle 31 of air-out apparatus 3 be discharged.
Wherein, the height in the balance cabin 2 is more than the height of the sample chamber 1, due to being released in collection gas hydrates
When releasing methane gas, a part of water in sample chamber can flow into balance cabin so that the water surface in balance cabin is higher than sample
The water surface in product cabin, that is to say, that the pressure in sample chamber is more than the pressure in balance cabin, thus to subsequent collection natural gas
Hydrate releases methane gas (main component of natural gas is methane) and provides pressure.
The regulating valve 4 is arranged on the air-out apparatus 3, and positioned at 32 lower section of the outlet nozzle；Regulating valve is for adjusting
Save the flow that gas is discharged in decomposition or burning.Described 5 one end of methane detection instrument is stretched into the sample chamber 1, and with it is described
Sample chamber 1 is connected to, and it is to manipulate regulating valve to detect methane for convenience of people that methane detection instrument is arranged herein.The first
It is provided with sealing device between alkane survey meter 5 and the sample chamber 1.Sealing cover mentioned here can make sealing ring, gasket
Or other similar devices that can play sealing function.In the present embodiment, sealing device is sealing cover 6.That is, the methane
Sealing cover 6 is set between survey meter 5 and the sample chamber 1, and the sealing cover stretches into the sample around the methane detection instrument
Cabin one end is arranged for one week.That is, when covering sealing cover 6, without the oxygen in air from methane detection instrument and sample
Gap between product cabin enters in sample chamber.
In this way, with temperature rise, gas hydrates sample, which starts to decompose, releases methane gas, and methane detector can
To be immediately detected methane concentration sharp increase.At this moment, regulating valve 4 is closed, keeps the gas that gas hydrates sample decomposes release poly-
The top for combining in sample chamber 1, with the increase of release gas, the pressure of sample chamber 1 is consequently increased, and the water in sample chamber enters
Balance cabin 2 so that the water surface in balance cabin is higher than sample chamber, and pressure is provided for gas discharge.
Wherein, the decomposition of the liquid nitrogen frozen gas hydrates sample and burner further include oxygen detection instrument 7,
Oxygen detection instrument one end is stretched into the sample chamber, and is connected to the sample chamber 1, the oxygen detection instrument 7 with it is described
Sealing cover 6 is set between sample chamber 1, and the sealing cover is set for one week around described sample chamber one end of stretching into of the oxygen detection instrument
It sets.It is identical as the sealing cover on methane detection instrument, sealing cover herein be also prevent oxygen in air from oxygen detection instrument with
Gap between sample chamber enters in sample chamber.
It should be noted that：Herein setting oxygen detection instrument be in order to gas hydrates discharge methane when,
It has detected whether that oxygen is mixed into, if there is oxygen is mixed into, then has just needed to detect whether sealing cover covers tightly, if mixed without oxygen
Enter, then can carry out it is subsequent light, when also avoiding to be mixed into oxygen in methane, lighting can there is a situation where explode to occur.
Wherein, in the present embodiment, the oxygen detection instrument 7 and the methane detection instrument 5 are located at the outlet dress
The both sides set.In this way, people is facilitated especially to exist the operation of oxygen detection instrument and methane detection instrument to a certain extent
When oxygen detection instrument and methane detection instrument work at the same time.
Wherein, the decomposition of liquid nitrogen frozen gas hydrates sample and burner further include gas flowmeter 8, the gas
Flowmeter body 8 is arranged on the air-out apparatus 3, and positioned at 4 lower section of the regulating valve.Setting gas flowmeter 8 can herein
Flow velocity to be measured to the gas volume that gas hydrate dissociation discharges, and when showing gas by outlet nozzle 32 and total
Flow.In this way, also people is facilitated to the operation of regulating valve, that is, to be beaten on the basis of flow velocity and flow number to a certain extent
Open and close are closed or are tuned up, turn down.
Wherein, in the present embodiment, the balance cabin is connected to the sample chamber by a connecting pipe 9, by
It is a simple communication apparatus in communicating pipe, therefore, it is more simple to allow for apparatus structure in this way, facilitates people to device
Operation.The both ends of communicating pipe 9 described herein are located at the lower end in the balance cabin and the sample chamber, so that balance
Cabin is connected to sample chamber in bottom, ensures that the gas of gas hydrate dissociation release is all collected in sample chamber in this way
It is interior, without being diffused into balance cabin.
Certainly, in the embodiment other than the utility model, balance cabin can also be made directly to be connected to sample chamber, or
The both ends of communicating pipe are integrated with sample chamber and the setting of balance cabin respectively.
Wherein, in the present embodiment, the balance cabin is arranged in parallel with the sample chamber, the balance bilge portion with it is described
Sample chamber bottom is located in same horizontal line, in this way, when gas hydrates discharge methane, it is more convenient to make to put down
Weigh cabin and sample chamber formation pressure difference, to which methane gas is pressed into air-out apparatus, and is discharged from outlet nozzle.
In the present embodiment, the decomposition of liquid nitrogen frozen gas hydrates sample and burner further include pedestal 10, institute
State balance cabin bottom and the sample chamber bottom be fixedly installed respectively and the pedestal on.In this way, being in order to sample
Product cabin and balance cabin are fixed.
The operation principle of the decomposition and burner of the liquid nitrogen frozen gas hydrates sample of the utility model
It is：
Gas hydrates sample is taken out in liquid nitrogen container, is placed in sample chamber, water is filled, at this moment sample chamber and balance
The water surface in cabin is contour.Sealing cover is covered, regulating valve is opened.Under same temperature and pressure, the boiling point of liquid nitrogen is -196 DEG C, and
The temperature of gas hydrate dissociation is -45 DEG C, so liquid nitrogen subsidiary in sample is volatilized into nitrogen first, after the water surface of emerging from
Outlet nozzle is discharged.Then as temperature rise, gas hydrates sample, which starts to decompose, releases methane gas, methane detector
Methane concentration sharp increase can be immediately detected.At this moment, regulating valve is closed, keeps the gas that gas hydrates sample decomposes release poly-
The top for combining in sample chamber, with the increase of release gas, the pressure of sample chamber is consequently increased, and the water in sample chamber passes through company
Siphunculus enters balance cabin so that the water surface in balance cabin is higher than sample chamber, and pressure is provided for gas discharge.Wait for gas hydrates
When sample does not have bubble generation, you can think that it is decomposed completely.At this moment the atmospheric sampling bag and outlet that can will be vacuumized
Mouth connects, and slowly opens regulating valve, and the gas at the top of sample chamber is collected into atmospheric sampling bag by outlet nozzle and is ground for subsequent
Study carefully use, gas flowmeter can show flow velocity and total flow when gas passes through outlet nozzle.Gas is lighted if necessary, can be led to
The speed for overregulating valve control gas outflow outlet nozzle, can burn in air.Gone out due to gas hydrate dissociation
Gas componant is mainly methane, there is the possibility of explosion if when being mixed into oxygen and lighting.For this purpose, being visited equipped with oxygen on sealing cover
Instrument is surveyed, can detect whether that oxygen is mixed into, to ensure the safety of operation.
Although the utility model and its advantage has been described in detail it should be appreciated that without departing from by appended right
Various changes, replacement and transformation can be carried out in the case of the spirit and scope of the utility model defined by it is required that.Moreover, this
The range of application is not limited only to the specific embodiment of process, equipment, means, method and steps described in specification.This field
Interior those of ordinary skill from the disclosure of the utility model it will be readily understood that according to the utility model can use execute with
The essentially identical function of corresponding embodiment described herein or obtain the result essentially identical with it, it is existing and future will quilt
Process, equipment, means, method or the step of exploitation.Therefore, the attached claims are intended to include this in the range of them
Process, equipment, means, method or the step of sample.
Claims (8)
1. decomposition and the burner of a kind of liquid nitrogen frozen gas hydrates sample, which is characterized in that including sample chamber, balance
Cabin, air-out apparatus, regulating valve and methane detection instrument, the sample chamber are connected to the balance cabin, the height in the balance cabin
More than the height of the sample chamber；Described air-out apparatus one end is connected to the sample chamber, and the other end of air-out apparatus is provided
Gas nozzle；The regulating valve is arranged on the air-out apparatus, and below the outlet nozzle；It stretches methane detection instrument one end
Enter in the sample chamber, and be connected to the sample chamber, sealing dress is provided between the methane detection instrument and the sample chamber
It sets.
2. decomposition and the burner of liquid nitrogen frozen gas hydrates sample according to claim 1, which is characterized in that
Sealing cover is set between the methane detection instrument and the sample chamber, and the sealing cover is described around stretching into for the methane detection instrument
Sample chamber one end is arranged for one week.
3. decomposition and the burner of liquid nitrogen frozen gas hydrates sample according to claim 1, which is characterized in that
Further include oxygen detection instrument, oxygen detection instrument one end is stretched into the sample chamber, and is connected to the sample chamber, the oxygen
Sealing cover is set between gas survey meter and the sample chamber, and the sealing cover stretches into the sample chamber around the oxygen detection instrument
One end is arranged for one week.
4. decomposition and the burner of liquid nitrogen frozen gas hydrates sample according to claim 3, which is characterized in that
The oxygen detection instrument and the methane detection instrument are located at the both sides of the air-out apparatus.
5. decomposition and the burner of liquid nitrogen frozen gas hydrates sample according to claim 1, which is characterized in that
Further include gas flowmeter, the gas flowmeter is arranged on the air-out apparatus, and below the regulating valve.
6. decomposition and the burner of liquid nitrogen frozen gas hydrates sample according to claim 1, which is characterized in that
It further include communicating pipe, the balance cabin is connected to the sample chamber by communicating pipe, and the both ends of the communicating pipe are located at institute
State the lower end in balance cabin and the sample chamber.
7. the decomposition of the liquid nitrogen frozen gas hydrates sample and burning dress according to any one of claims 1 to 6
It sets, which is characterized in that the balance cabin is arranged in parallel with the sample chamber, the balance bilge portion and sample chamber bottom position
In in same horizontal line.
8. decomposition and the burner of liquid nitrogen frozen gas hydrates sample according to claim 7, which is characterized in that
Further include pedestal, it is described balance cabin bottom and the sample chamber bottom be fixedly installed respectively and the pedestal on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820127678.XU CN207798822U (en) | 2018-01-25 | 2018-01-25 | The decomposition of liquid nitrogen frozen gas hydrates sample and burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820127678.XU CN207798822U (en) | 2018-01-25 | 2018-01-25 | The decomposition of liquid nitrogen frozen gas hydrates sample and burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798822U true CN207798822U (en) | 2018-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820127678.XU Expired - Fee Related CN207798822U (en) | 2018-01-25 | 2018-01-25 | The decomposition of liquid nitrogen frozen gas hydrates sample and burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207798822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387704A (en) * | 2018-01-25 | 2018-08-10 | 广州海洋地质调查局 | The decomposition of liquid nitrogen frozen gas hydrates sample and burner and its method |
-
2018
- 2018-01-25 CN CN201820127678.XU patent/CN207798822U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387704A (en) * | 2018-01-25 | 2018-08-10 | 广州海洋地质调查局 | The decomposition of liquid nitrogen frozen gas hydrates sample and burner and its method |
| CN108387704B (en) * | 2018-01-25 | 2024-03-19 | 广州海洋地质调查局 | Decomposing and burning device and method for liquid nitrogen frozen natural gas hydrate sample |
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| 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: 20180831 Termination date: 20220125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |