CN207540844U - A kind of natural gas sample collecting apparatus - Google Patents
A kind of natural gas sample collecting apparatus Download PDFInfo
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- CN207540844U CN207540844U CN201721560617.4U CN201721560617U CN207540844U CN 207540844 U CN207540844 U CN 207540844U CN 201721560617 U CN201721560617 U CN 201721560617U CN 207540844 U CN207540844 U CN 207540844U
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Abstract
The utility model discloses a kind of natural gas sample collecting apparatus, belongs to experimental analysis technical field, and harvester includes cylinder, sealing lock and air guide mechanism, and cylinder is both ends open and the copper pipe of connection, for housing natural gas；Two sealing locks are arranged at intervals on cylinder, and sealing lock being capable of sliding axially and along the radial compaction of cylinder or release cylinder, by adjusting the distance between two sealing locks, realizing to gas storage, the quantitative control of deflation volume in cylinder along cylinder；One end of air guide mechanism is detachably connected with cylinder, and the other end is connect with air supply opening.
Description
Technical field
The utility model is related to experimental analysis technical field more particularly to a kind of natural gas sample collecting apparatus.
Background technology
Natural gas refers to a naturally occurring tangential gas in nature, including various natures in atmospheric thermodynamics, hydrosphere and lithosphere
The gas that process is formed.In petroleum geology, casing-head gas and reservoir gas are often referred to, is formed based on hydro carbons, and containing non-
Appropriate hydrocarbon gas.The composition research of natural gas includes the compound composition of natural gas and the analysis of isotopics.Experimental analysis chemical combination
The analytical instrument that the composition of object is related to is gas chromatograph, and the analysis of isotopics is related to isotope mass spectrometer.Two kinds of instruments
Sample introduction requirement for gas pressure 0.5-1.0MPa, gas chromatograph sampling volume is 5mL, and isotope mass spectrometer sampling volume is
20~40 μ L, sample size requirement are very low.
Sample collection mainly in researching and analysing, be laboratory carry out Instrumental Analysis important component, acquisition
Sample quality requirement purity will height, leakproofness will get well, and can preserve for a long time, also be convenient for from sampling site to laboratory and difference
Transport between laboratory.
There are two types of the sampling apparatuses for being currently used for natural gas experimental analysis：Aluminium foil airbag and steel cylinder.
Aluminium foil airbag material be film coated aluminum foil, general requirements size be 19cm*19cm, volume 1L, band there are one or
Two straight-bar valves, the blowing pressure are no more than 3KPa, poor sealing, and sample cannot preserve for a long time, and gas pressure-bearing is small, and airbag is easy
Damage, it is impossible to be touched with sticker, can not fall, knock, grazing, and will be far from heat source.Due to poor sealing, gas have it is lost,
Compound composition analysis can only be carried out, the result of isotope analysis is inaccurate, cannot extensive use.Sample sack cracky, it is right
Logistics transportation requirement is high, and is unable to air transport, poor in timeliness.
Steel cylinder material changes for seamless stainless steel or other metal materials, specification with volume, the steel of general volume 0.7L
Bottle, long 50cm, diameter 7cm, the blowing pressure 15MPa, weight about 1kg separately have equipped with one or two valve, and pressure-bearing is high, close
Envelope property is good, and volume is big, but of high cost, and weight is big, inconvenient to carry, it is impossible to air transport and entrust to logistics company, can only voluntarily transport
Defeated, transportation cost is high.Volume cannot be adjusted, and sampling quantity is too many, be far longer than the sample size of experimental analysis, actually cause money
Source wastes.
Utility model content
It is in the prior art to solve the purpose of this utility model is to provide a kind of natural gas sample collecting apparatus
The technical issues of sample collecting apparatus is of high cost, weight is big, transport is inconvenient to carry, capacity cannot be adjusted.
As above conceive, technical solution is used by the utility model：
A kind of natural gas sample collecting apparatus, including：
Cylinder is both ends open and the copper pipe connected；
Lock is sealed, two sealing locks are arranged at intervals on the cylinder, and the sealing lock can be along the gas storage
Pipe slide axially and along the cylinder radial compaction or unclamp the cylinder；
Air guide mechanism, one end are detachably connected with the cylinder, and the other end is connect with air supply opening.
Wherein, the sealing lock includes：
Main switch body, offers guide groove thereon, and the cylinder is fed through the guide groove；
Lock core, including the screw rod for pushing wedge and driving the pushing wedge movement being slideably positioned in the guide groove, institute
Stating lock core being capable of moving radially along the cylinder.
Wherein, the mounting hole connected with the guide groove, the screw rod and the mounting hole are offered on the main switch body
It is spirally connected and is connect with the pushing wedge, the pushing wedge is driven to be slided in the guide groove by rotating the screw rod.
Wherein, it is described to push what is offered storage tank on wedge and connected positioned at the storage tank side and with the storage tank
Limit hole, the end of the screw rod offer annular groove, and the end of the screw rod is located in the storage tank, in the limit hole
It is provided with the spacer pin with the annular groove grafting.
Wherein, support plate is further included, is set to the side of the cylinder and along the axially extending of the cylinder, institute
Sealing lock is stated to be slidably connected with the support plate.
Wherein, the sealing lock further includes ground sill, is detachably connected with the main switch body and is slided with the support plate
Connection, the pilot hole that coordinates with the support plate is offered on the ground sill and positioned at the pilot hole side and with the guiding
The location hole of hole connection, is provided with the positioning pin abutted with the support plate in the location hole.
Wherein, the main switch body and the ground sill are detachably connected by screw, are provided on the main switch body and are worn institute
The through-hole of screw is stated, position corresponding with the through-hole offers threaded hole on the ground sill.
Wherein, the air guide mechanism includes：
Gas-guide tube, one end are connect by connection valve with the cylinder, and the other end is connect with pressure reducing valve；
Connecting tube, one end are connect with the pressure reducing valve, and the other end is connect with the air supply opening.
Wherein, pre-treatment mechanism is further included, is detachably connected with one end of the cylinder, pre-treatment mechanism packet
Include quantitative cavity and vacuum pump, the outer wall of the quantitative cavity be equipped with the first passage that is connected with the cylinder and with it is described
The second channel of vacuum pump connection is additionally provided with several on the outer wall of the quantitative cavity and is connected with the inner cavity of the quantitative cavity
Interface, the interface is provided with connection valve.
The beneficial effects of the utility model：
The utility model proposes a kind of natural gas sample collecting apparatus, cylinder for both ends open and connect copper pipe,
It is at low cost for housing natural gas, air transportation may be used, timeliness is strong, easy to carry, recoverable；Two sealings
Lock is arranged at intervals on cylinder, sealing lock can along cylinder slide axially and the radial compaction along cylinder or release
Cylinder by adjusting the distance between two sealing locks, is realized to gas storage, the quantitative control of deflation volume in cylinder, is made
Gas storage capacity suitable is obtained, avoids sample waste；One end of air guide mechanism is connect with cylinder, and the other end is connect with air supply opening, is used
In the air guide into cylinder.
Description of the drawings
Fig. 1 is the structure diagram of natural gas sample collecting apparatus provided by the utility model；
Fig. 2 is the schematic cross-sectional view of the sealing lock of natural gas sample collecting apparatus provided by the utility model；
Fig. 3 is the decomposition texture schematic diagram of Fig. 2；
Fig. 4 is structure diagram when natural gas sample collecting apparatus provided by the utility model is sampled；
Fig. 5 is structure diagram when natural gas sample collecting apparatus provided by the utility model is sampled.
In figure：
1st, cylinder；2nd, lock is sealed；3rd, support plate；
21st, main switch body；211st, guide groove；212nd, mounting hole；213rd, through-hole；
22nd, wedge is pushed；221st, storage tank；222nd, limit hole；
23rd, screw rod；231st, annular groove；
24th, ground sill；241st, backing plate；242nd, pilot hole；243rd, location hole；244th, threaded hole；
41st, gas-guide tube；42nd, pressure reducing valve；43rd, connecting tube；
51st, quantitative cavity；52nd, vacuum pump.
Specific embodiment
The technical issues of to solve the utility model, the technical solution used and the technique effect reached are clearer,
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.It is understood that
Specific embodiment described herein is used only for explaining the utility model rather than the restriction to the utility model.In addition it also needs
It is noted that illustrate only for ease of description, in attached drawing with the relevant part of the utility model and it is not all.
Referring to Fig. 1, the utility model embodiment provides a kind of natural gas sample collecting apparatus, including cylinder 1, sealing lock
2nd, air guide mechanism and support plate 3.
Cylinder 1 is both ends open and the copper pipe of connection, and for housing natural gas, two sealing locks 2 are arranged at intervals at storage
On tracheae 1, sealing lock 2 can along cylinder 1 slide axially and along cylinder 1 radial compaction or unclamp cylinder 1.Branch
Fagging 3 is set to the side of cylinder 1 and along the axially extending of cylinder 1, and sealing lock 2 is slidably connected with support plate 3.
In the present embodiment, the material of cylinder 1 be pure red copper, T2 materials 99.9%, specification be outer diameter 8mm, internal diameter
6mm, length 55cm, volume about 15.6mL.During natural gas transportation, natural gas is stored using cylinder 1, cylinder 1 exists
Soft using copper pipe material during natural gas transportation, the characteristics of anti-pressure ability is strong, meets the resistance to pressure requirement of gas, has simultaneously
There is ductility feature so that when sealing lock 2 compresses cylinder 1, cylinder 1 is closed, after the release of lock 2 is sealed, gas storage
Pipe 1, which loosens, certain gap, interior natural gas outflow.Natural gas is housed by cylinder 1, using sealing, lock 2 is right
The both ends of cylinder 1 carry out compression sealing so that natural gas is small in transportational process, portable, and logistics is convenient, improves
The transport convenience of Gas Exploitation sampling device.Certainly, cylinder 1 can select the specification size of other volumes, to adapt to not
Same test environment needs.
Cylinder 1 carries out natural gas accommodating transport, and elongate structure, which is squeezed, easily generates deformation or bending, holds
Easily leading to air pressure change in cylinder 1 influences its sealing performance, and multiple bending is easy to cause the fracture opening of cylinder 1, support
Two sealing locks 2 are connected as one by the setting of plate 3 by support plate 3, meanwhile, the radial direction of cylinder 1 is carried out by support plate 3
Support, support plate 3 play certain protective action to cylinder 1.By cylinder 1, sealing lock 2 and support plate 3 support construction,
Form the sampling apparatus main body transported to natural gas.Preferably, support plate 3 uses long aluminum strip of the cross section for rectangle, long
About 55cm.Aluminium material reduces the weight of Gas Exploitation sampling device.
Sealing lock 2 can move in support plate 3, be realized by the distances of two sealing locks 2 to gas storage, deflation volume
Quantitative control.Preferably, sealing lock 2 ensures the stability of sealability using stainless steel.
Referring to Fig. 2 and Fig. 3, sealing lock 2 includes main switch body 21 and lock core, and guide groove 211, gas storage are offered on main switch body 21
Pipe 1 is fed through guide groove 211, and lock core includes the pushing wedge 22 being slideably positioned in guide groove 211 and pushes wedge 22 for driving
Mobile screw rod 23, screw rod 23 pushes the moving radially along cylinder 1 of wedge 22 for driving, closer or far from cylinder 1.
Screw rod 23 is set on main switch body 21, and the mounting hole 212 connected with guide groove 211, spiral shell are offered on main switch body 21
Bar 23 is spirally connected with mounting hole 212 and is connect with pushing wedge 22, and pushing wedge 22 is driven in sliding in guide groove 211 by rotating screw rod 23
It is dynamic.It pushes and storage tank 221 is offered on wedge 22 and positioned at 221 side of storage tank and the limit hole 222 that is connected with storage tank 221,
The end of screw rod 23 offers annular groove 231, and the end of screw rod 23 is located in storage tank 221, is provided in limit hole 222 and ring
The spacer pin of 231 grafting of shape slot.In 23 rotation process of screw rod, screw rod 23 rotates in storage tank 221, and screw rod is avoided by spacer pin
23 in storage tank 221 by deviating from.Opening sealing lock 2 is specially to rotate screw rod 23 pushing wedge 22 is driven to loosen cylinder 1,
Closing sealing lock 2 is specially to rotate screw rod 23 pushing wedge 22 is driven to carry out compression sealing to cylinder 1, under being adjusted by screw rod 23
22 height of wedge is pressed, applies pressure to copper pipe, has the function that seal copper pipe.
Sealing lock 2 further includes ground sill 24, is detachably connected with main switch body 21 and is slidably connected with support plate 3, ground sill 24
The opening of guide groove 211 is connected to, is translated by rotating the driving pushing wedge 22 of screw rod 23, when pushing wedge 22 and 1 phase of cylinder
To when, be rotated further screw rod 23, driving pushes wedge 22 and 24 compression fit of ground sill, and cylinder 1 is radially compressed deformation, realizes
The compression of cylinder 1 is sealed.It is plane that the pressure side surface of wedge 22, which is pushed, with the pressure-bearing end face of ground sill 24, by pushing wedge 22
With the compression fit of ground sill 24, cylinder 1 is radially flattened, the inner wall of cylinder 1 is compressed to be mutually adjacent to, so as to avoid storing up
1 internal gas of tracheae is overflowed by 2 position of sealing lock.
Wedge 22 is pushed in guide groove 211 slide-and-guide can be carried out by sliding rail or bearing, avoids pushing wedge 22 to gas storage
When pipe 1 is compressed, the side wall of pushing wedge 22 and guide groove 211, which offsets, causes pushing wedge 22 to tilt, and influences the pressure to cylinder 1
Tightening seal.
The position of face guide groove 211 is provided with backing plate 241 on ground sill 24, and backing plate 241 has pressure-bearing effect, is used to support
Cylinder 1.It pushes wedge 22 and deformation is compressed to cylinder 1 with 241 compression fit of backing plate.
The pilot hole 242 that coordinates with support plate 3 is offered on ground sill 24 and positioned at 242 side of pilot hole and and pilot hole
The location holes 243 of 242 connections, are provided with the positioning pin abutted with support plate 3 in location hole 243.Support plate 3 is plugged in pilot hole
In 242, the shape of pilot hole 242 is matched with the cross-sectional shape of support plate 3.Sealing lock 2 can be along the length direction of support plate 3
Sliding, i.e. support plate 3 can be by stretching into or extracting out in pilot hole 242, so as to change position of the sealing lock 2 in support plate 3.It is storing up
In 1 transportational process of tracheae, need to ensure the stability of connection structure between sealing lock 2 and cylinder 1, avoid sealing lock 2 and storage
Shaking between tracheae 1 opens up the location hole 243 of connection pilot hole 242 in the side wall of ground sill 24, and support plate 3 is encased in guiding
After in hole 242, the axial direction of location hole 243 is opposite with the side wall of support plate 3, after the completion of cylinder 1 samples, will be propped up by positioning pin
Sealing lock 2 on fagging 3 limits, and then is connected as one two sealing locks 2 by support plate 3.
In the present embodiment, main switch body 21 and ground sill 24 are detachably connected by screw, and through-hole is provided on main switch body 21
213, for wearing screw, threaded hole 244 is offered with 213 corresponding position of through-hole on ground sill 24.
Referring to Fig. 4, one end and the cylinder 1 of air guide mechanism are detachably connected, and the other end is connect with air supply opening, installing and dismounting
It is convenient.Specifically, air guide mechanism is connect with the air inlet of cylinder 1.
Air supply opening refers to that the port that collect sample can be provided, can be oil/gas well gas outlet or other
The gas outlet of industrial gas or the gas outlet of other large-scale gas storage facilities.Air supply opening is excessive because of pressure, it is impossible to directly with
Cylinder 1 is connected, and needs to be attached by other equipment, the high pressure gas of air supply opening is converted to preset air pressure, then is led to
Enter into cylinder 1, it is therefore desirable to which air guide mechanism is installed.
Air guide mechanism includes gas-guide tube 41, pressure reducing valve 42 and connecting tube 43, and one end of gas-guide tube 41 passes through connection valve and storage
Tracheae 1 connects, and the other end is connect with pressure reducing valve 42；One end of connecting tube 43 is connect with pressure reducing valve 42, and the other end connects with air supply opening
It connects.In the present embodiment, gas-guide tube 41 is copper pipe；Cylinder 1 is connect with pressure reducing valve 42 by the gas-guide tube of 3mm 41 first,
Pressure reducing valve 42 is connected with air supply opening by high voltage bearing connecting tube 43 again.Preferably, each coupling part is using straight-through
Connection valve, sealing are sealed using fine copper cutting ferrule.
Referring to Fig. 5, natural gas sample collecting apparatus further includes pre-treatment mechanism, pre-treatment mechanism and one end of cylinder 1
It is detachably connected.Sample pre-treatments are also the pith of experimental analysis, and since the requirement of instrument limits, the sample of acquisition cannot
It is sent directly into instrument and carries out test analysis, pretreating device is needed targetedly to be handled.Existing airbag and steel cylinder
Without the suitable unified sample introduction pretreating device of specially matching.Sample size is held mainly by the experience of experimenter, real in this way
The quality for testing personnel is very big on experimental result influence, and it is possible to cause the loss and waste of sample.
Pre-treatment mechanism includes quantitative cavity 51 and vacuum pump 52, and the outer wall of quantitative cavity 51 is equipped with to be connected with cylinder 1
Logical first passage and the second channel connected with vacuum pump 52.First passage connects with cylinder 1 and will be natural in cylinder 1
Gas is imported into quantitative cavity 51, to ensure the connective stability between cylinder 1 and quantitative cavity 51, using stainless steel cuff
The mode combined with sealing ring realizes the sealing and connection of cylinder 1 and quantitative cavity 51.Second channel connects vacuum pump 52, very
Sky pump 52 is connect by needle-valve with quantitatively cavity 51, by vacuum pump 52 by the internal drop in quantitative cavity 51 down to purpose pressure
Power excludes the interference gas in quantitative cavity 51.Meanwhile by being depressured to quantitative cavity 51 so that cylinder 1 and quantitative cavity
There are pressure differentials between 51 inner cavity, after opening sealing lock 2, cylinder 1 are crushed automatically using pressure differential and partly struts one
Determine gap, complete the supply of natural gas.
Several interfaces connected with the inner cavity of quantitative cavity 51, interface setting are additionally provided on the outer wall of quantitative cavity 51
There is connection valve.Sealing and connection are implemented in combination with by stainless steel cuff and sealing ring between cylinder 1 and quantitative cavity 51.It can lead to
Cross connection valve connection gas chromatograph and isotope mass spectrometer.The online sample introduction part of gas chromatograph passes through needle-valve and quantitative cavity
51 interface is direct-connected.The offline sample introduction part of isotope mass spectrometer is capstan nut, is sealed by rubber pad, needle during sample introduction
Shape sampler penetrates rubber pad by nut aperture and extracts natural gas.
Pretreating device can realize natural gas in copper pipe smoothly according to instrument requirements sample introduction.In the present embodiment, it is fixed
It is stainless steel to measure 51 material of cavity, and intracavitary specification is 3cm*3cm*1cm, volume 9mL, realizes the quantitative purpose of sample size.
The one end open of cylinder 1 is air inlet, and another end opening is gas outlet, and air inlet and gas outlet are not fixed
Limitation, only when in use, the one end being connect with air guide mechanism is air inlet, and the one end being connect with pre-treatment mechanism is outlet
Mouthful.
To sum up, the utility model embodiment provide natural gas sample collecting apparatus, using copper cylinder 1 with it is stainless
The gas transport device of sealing 2 compression fit of lock of steel material, small, structure design materials are few, copper pipe recoverable,
Cost relative reduction, economy improve.Copper pipe material is soft, and structural strength is high, meets the pressure requirements of sample natural gas, copper pipe peace
It is complete non-leakage, it is firm corrosion-resistant.Certainly, cylinder 1 can also disclosure satisfy that natural gas pressure-bearing will using other metal materials
The key asked, such as stainless steel parts.
From the aspect of aviation and land transportation logistics, cylinder 1 is small, and intensity is high, and storage air pressure meets air transportation will
It asks, land transportation requirement can also be met, avoid the trouble specially transported.
Cylinder 1 is supported by support plate 3, and sealing is compressed by sealing lock 2, simple in structure, light-weight, good portability, and
Each assembling parts dismounting is all very convenient.Sealing lock 2 slides arrangement in support plate 3, therefore can sample dosage according to natural gas and want
It asks, the natural gas in interception predetermined length cylinder 1 is sampled experiment, and the cylinder 1 of non-sampling part continues with sealing lock 2
Compression sealing is carried out, so as to avoid the extra waste of sample, 1 Capacity design of cylinder is met into every sub-sampling sample and is met 3-5 times
Test dosage, make the best use of everything, improve the utilization rate of sample.
Cylinder 1 and the connection of pre-treatment mechanism and air guide mechanism are connected with metal sealing, ensure that leakproofness and safety
Property.Cylinder 1 is vulnerable part due to repeating compression and loosening operation, and pre-treatment mechanism and air guide mechanism can be repeatedly utilized so that,
And copper has regeneration value in itself, contributes to environmental protection.
Based on above-mentioned natural gas sample collecting apparatus, when carrying out natural gas sample collection, it is as follows：
1) pre-pressing；
According to sampling request, the cylinder 1 of predetermined length is intercepted, two sealing locks 2 respectively slide to 3 length side of support plate
To both ends, air inlet and the gas outlet at 1 both ends of cylinder are reserved, by 1 pre-pressing of cylinder in 22 He of pushing wedge of sealing lock 2
Between ground sill 24, the pre-installation of cylinder 1 is completed.
Preferably, cylinder 1 intercepts 55cm, meets the test dosage of natural gas sample 3-5 times.Two 2 spacing of sealing lock
50cm or so.
2) air guide mechanism is connected；
One end of selected cylinder 1 is air inlet, installs copper cutting ferrule, after completed according to connection relation from air supply opening-subtract
The connection of pressure valve 42- gas-guide tube 41- cylinders 1,41 one end of gas-guide tube are connect by connection valve with cylinder 1, gas-guide tube 41
The other end is connect by interface with the outlet of pressure reducing valve 42, and the import of pressure reducing valve 42 is connected to air supply opening by connecting tube 43.
Copper cutting ferrule ensures the leakproofness between gas-guide tube 41 and cylinder 1, and high-pressure rubber hose may be used in gas-guide tube 41,
The connection of high-pressure rubber hose and cylinder 1 and pressure reducing valve 42 may be used clip and be directly connected to.
3) it samples；
Specifically, sealing lock 2 is kept to be in opening, opens gas source feed end switch, adjusts pressure reducing valve 42 by air source
It is exported with predetermined air guide pressure to cylinder 1, observation gas supply end admission pressure to predetermined pressure, air-flow is from the air inlet of cylinder 1
Mouth is flowed into and is flowed out by gas outlet, and cylinder 1 is rinsed, and after rinsing the predetermined time, the air in cylinder 1 is discharged.
The sealing lock 2 far from air guide mechanism in two sealing locks 2 is first closed, 1 outlet side of cylinder is compressed and is sealed, turns off close lead
The sealing lock 2 of mechanism of qi structure, natural gas is closed in cylinder 1, i.e., at the sealing lock 2 and air inlet at orderly close-down gas outlet
Sealing lock 2, and successively close pressure reducing valve 42 and gas supply end.The natural gas in cylinder 1 between two sealing locks 2 is
For collected sample.Gas-guide tube 41 and cylinder 1 are finally dismantled into separation, complete the sampling to cylinder 1.
Preferably, the outlet pressure of pressure reducing valve 42 is adjusted to 1.0MPa or so.Rinse predetermined time 20s.
4) connection pre-treatment mechanism；
Cylinder 1 is transported to laboratory and carries out sample analysis, the one end for selecting cylinder 1 is gas outlet, connects gas storage
Pipe 1 and pre-treatment mechanism, the end of cylinder 1 are set with sealing ring, and quantitatively the air inlet of the first passage of cavity 51 is put on stainless
The gas outlet of cylinder 1 is connect by steel hoop, the screw for tightening cuff with the air inlet of quantitative cavity 51, realizes cylinder 1
Installation.
The connection valve of the interface of quantitative cavity 51 is closed, and vacuum pump 52 is connected with quantitative cavity 51.It opens
The internal pressure of quantitative cavity 51 is down to preset air pressure value by vacuum pump 52, avoids interference of the air to natural gas in quantitative cavity 51.
After pressure is in stable condition in quantitative cavity 51, vacuum pump 52 is closed.
Preferably, the preset air pressure value in quantitative cavity 51 is 0.1MPa.
5) it samples；
Open the sealing lock 2 close to pre-treatment mechanism, i.e., the sealing lock 2 at the gas outlet of cylinder 1, due to quantitative
There are pressure differentials between cavity 51 and cylinder 1, and after sealing lock 2 unclamps, the natural gas in cylinder 1 pushes cylinder 1 to compress
End face is separated from each other, and certain gap is opened at the closing of cylinder 1, so that natural gas sample is passed through under the action of pressure difference
Into quantitative cavity 51.
After open sealing lock 2 is slid predetermined length to the direction far from pre-treatment mechanism along support plate 3, sealing is closed
To compress cylinder 1, the natural gas after sliding in the cylinder 1 of predetermined length is flowed into quantitative cavity 51 lock 2, is realized pair
The sampling of 1 test samples of cylinder.Specifically, the slip length of sealing lock 2 is 10cm, and under pressure 0.1MPa, volume is about
2.8mL。
6) sample analysis；
Connection valve and instrument on the quantitative cavity 51 of connection can be respectively communicated with gas chromatograph and same by two connection valves
Position quality spectrometer, completes the sample analysis to natural gas.
Natural gas sample is completed after sample introduction is analyzed, can be by cylinder 1 by being dismantled, and cut out sample introduction mistake on quantitative cavity 51
1 part of cylinder, avoid interference of 1 dead volume of cylinder to air pressure during to next sample introduction.
Embodiment of above is to elaborate the basic principle and characteristic of the utility model, and the utility model is not by above-mentioned reality
The mode of applying limits, and on the premise of not departing from the spirit and scope of the utility model, the utility model also has various changes,
These changes and modifications are both fallen in claimed the scope of the utility model.The utility model requires protection scope is by appended
Claims and its equivalent thereof.
Claims (9)
1. a kind of natural gas sample collecting apparatus, which is characterized in that including：
Cylinder (1) is both ends open and the copper pipe connected；
Lock (2) is sealed, two sealing locks (2) are arranged at intervals on the cylinder (1), and the sealing lock (2) being capable of edge
The cylinder (1) slide axially and along the cylinder (1) radial compaction or unclamp the cylinder (1)；
Air guide mechanism, one end are detachably connected with the cylinder (1), and the other end is connect with air supply opening.
2. natural gas sample collecting apparatus according to claim 1, which is characterized in that the sealing lock (2) includes：
Main switch body (21), offers guide groove (211) thereon, and the cylinder (1) is fed through the guide groove (211)；
Lock core, it is mobile including the pushing wedge (22) being slideably positioned in the guide groove (211) and the driving pushing wedge (22)
Screw rod (23), the lock core being capable of moving radially along the cylinder (1).
3. natural gas sample collecting apparatus according to claim 2, which is characterized in that offered on the main switch body (21)
The mounting hole (212) connected with the guide groove (211), the screw rod (23) be spirally connected with the mounting hole (212) and with it is described
Pushing wedge (22) connects, and the pushing wedge (22) is driven in slip in the guide groove (211) by rotating the screw rod (23).
4. natural gas sample collecting apparatus according to claim 3, which is characterized in that offered on the pushing wedge (22)
Storage tank (221) and the limit hole (222) connected positioned at the storage tank (221) side and with the storage tank (221), it is described
The end of screw rod (23) offers annular groove (231), and the end of the screw rod (23) is located in the storage tank (221), described
The spacer pin with the annular groove (231) grafting is provided in limit hole (222).
5. natural gas sample collecting apparatus according to claim 2, which is characterized in that further include support plate (3), set
It is described to seal lock (2) and the support plate (3) in the side of the cylinder (1) and along the axially extending of the cylinder (1)
It is slidably connected.
6. natural gas sample collecting apparatus according to claim 5, which is characterized in that the sealing lock (2) further includes bottom
Sill (24) are detachably connected with the main switch body (21) and are slidably connected with the support plate (3), opened on the ground sill (24)
Equipped with the pilot hole (242) coordinated with the support plate (3) and positioned at the pilot hole (242) side and with the pilot hole
(242) location hole (243) of connection, the location hole (243) is interior to be provided with the positioning pin abutted with the support plate (3).
7. natural gas sample collecting apparatus according to claim 6, which is characterized in that the main switch body (21) and the bottom
Sill (24) are detachably connected by screw, and the through-hole (213) for wearing the screw, the bottom are provided on the main switch body (21)
Position corresponding with the through-hole (213) offers threaded hole (244) on sill (24).
8. according to claim 1-7 any one of them natural gas sample collecting apparatus, which is characterized in that the air guide mechanism packet
It includes：
Gas-guide tube (41), one end are connect by connection valve with the cylinder (1), and the other end is connect with pressure reducing valve (42)；
Connecting tube (43), one end are connect with the pressure reducing valve (42), and the other end is connect with the air supply opening.
9. according to claim 1-7 any one of them natural gas sample collecting apparatus, which is characterized in that further include pretreating machine
Structure is detachably connected with one end of the cylinder (1), and the pre-treatment mechanism includes quantitative cavity (51) and vacuum pump
(52), the outer wall of the quantitative cavity (51) be equipped with the first passage that is connected with the cylinder (1) and with the vacuum pump
(52) it is interior with the quantitative cavity (51) to be additionally provided with several on the outer wall of the quantitative cavity (51) for the second channel of connection
The interface of chamber connection, the interface are provided with connection valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721560617.4U CN207540844U (en) | 2017-11-21 | 2017-11-21 | A kind of natural gas sample collecting apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721560617.4U CN207540844U (en) | 2017-11-21 | 2017-11-21 | A kind of natural gas sample collecting apparatus |
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| CN207540844U true CN207540844U (en) | 2018-06-26 |
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| CN201721560617.4U Withdrawn - After Issue CN207540844U (en) | 2017-11-21 | 2017-11-21 | A kind of natural gas sample collecting apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677520A (en) * | 2017-11-21 | 2018-02-09 | 中国石油大学(北京) | A kind of natural gas sample collecting apparatus and acquisition method |
| CN113884421A (en) * | 2020-07-03 | 2022-01-04 | 中国石油化工股份有限公司 | Device and method for observing light hydrocarbon dissipated from rock core |
-
2017
- 2017-11-21 CN CN201721560617.4U patent/CN207540844U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677520A (en) * | 2017-11-21 | 2018-02-09 | 中国石油大学(北京) | A kind of natural gas sample collecting apparatus and acquisition method |
| CN107677520B (en) * | 2017-11-21 | 2023-10-20 | 中国石油大学(北京) | Natural gas sample collection device and collection method |
| CN113884421A (en) * | 2020-07-03 | 2022-01-04 | 中国石油化工股份有限公司 | Device and method for observing light hydrocarbon dissipated from rock core |
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