CN106353152B - Device for sampling - Google Patents
Device for sampling Download PDFInfo
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- CN106353152B CN106353152B CN201510418734.6A CN201510418734A CN106353152B CN 106353152 B CN106353152 B CN 106353152B CN 201510418734 A CN201510418734 A CN 201510418734A CN 106353152 B CN106353152 B CN 106353152B
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Abstract
The present invention relates to a kind of devices for sampling, one end is provided with entrance and the other end is provided with the container of outlet, setting in the above-described container and can be along the piston body of container axial movement, and, conduction element on the piston body is set, wherein, the container is divided into the first space and second space, the connection and cut-off that the conduction element can move under pneumatic pressure along institute's piston body to realize first space Yu the second space by the piston physical efficiency.During using the present apparatus, by the position of regulating piston body, it is just adjustable the volume of the first space and second space, to play the role of pressurization or decompression to gas therein.The two-way variation of pressure has just been able to achieve by the present apparatus as a result,.In addition, this apparatus structure is simple, it is easy to operate.
Description
Technical field
The present invention relates to natural gases to acquire technical field, and in particular to a kind of device for sampling.
Background technique
As specific gravity of the natural gas in national energy consumption is continuously increased, the also sustainable growth of the demand to natural gas, because
This finds that more natural gases are the main problem that explorationist faces in oil and gas industry production field.It is asked to solve this
Topic, needs the origin cause of formation to natural gas, studies at hiding, and therefore, it is necessary to be sampled to natural gas to meet the needs of research.
It in the prior art, mainly will be in well head or gas gathering station using metal or rubber tube to the sampling of natural gas
Gas source be connected with sampling bottle, pass through valve control air-flow sample introduction.Due to the import of gas well liquid loading well or gas gathering station separator
Pressure afterwards is different, when being collected using sampling bottle, it is possible that problem.For example, gas well very high for gas pressure intensity, high
Body of calming the anger be easy to cause the impact to sampling bottle, and causes irreversible injury to the valve of sampling bottle, sealing ring etc..As a result,
When collecting high pressure gas using sampling bottle, there are the risks of sampling bottle leakage, to influence the long-term safety of gas sample preservation.
In another example due at present still by the mode to the air progress gas displacement in sampling bottle in sampling bottle
Air is emptied.If gas sample gas pressure intensity is lower, it is difficult completely to replace the air in sampling bottle.Accordingly, for gas
Very low gas well is pressed, air is easy displacement deficiency in sampling bottle, causes gas sample pollution problem.And the current method of sampling, and not
Blower operations can be carried out to the gas sample of well head, the gas sample of low pressure well is caused to be difficult to replace completely.
In the prior art, the pressure of high-pressure gas well well head can be reduced using pressure reducing valve.But increase device without related
Increase operation is carried out to gas sample.Especially, not can be carried out blower operations also to gas sample in the prior art can be carried out decompression behaviour
The device of work.
Therefore, it is necessary to invent a kind of device, be allowed to not only be depressured high pressure gas sample, but can to low pressure gas sample into
Row is pressurized to meet the displacement of different pressure gas.
Summary of the invention
For the above-mentioned technical problem in the presence of the prior art, the invention proposes a kind of devices for sampling.It should
Device can realize the two-way variation of pressure.It that is to say, high-pressure gas well can be depressurized by the device, will be more than sampling bottle
The air pressure of pressure range drops within the scope of the safe air pressure of sampling bottle.Meanwhile low-pressure gas can also be carried out using the device
Pressurization, thus, guarantee the replacement result to air in sampling bottle, to guarantee the purity of sample.In addition, the apparatus structure is simple
It is single, production easy to process.
According to the invention it is proposed that a kind of device for sampling, comprising:
One end is provided with entrance and the other end is provided with the container of outlet,
The piston body that can be axially moved in the above-described container and along the container is set, and the piston physical efficiency is by the container
It is divided into the first space and second space,
Conduction element on the piston body is set, and the conduction element can move under pneumatic pressure along institute's piston body to realize
State the connection and cut-off in the first space Yu the second space.
In one embodiment, the conduction element has the conducting that can pass through the installation through-hole being arranged on the piston body
Part ontology is provided with the fluid passage that can be connected to first space, in the conduction element sheet on the conduction element ontology
It is provided with the fluid bore being connected to the fluid passage on the second end side wall of body, it is described in conduction element longitudinal movement
Fluid bore can remove or move into the installation through-hole and selectively be connected to the second space.
In one embodiment, the effective diameter of the second end of the conduction element ontology is greater than the effective diameter of first end,
And the shape of the installation through-hole is matched with the shape of the conduction element ontology.
In one embodiment, the second end of the conduction element ontology is configured to cone cell, and first end is configured to column.
In one embodiment, it is set between the surface that the conicoid of the conduction element ontology is contacted with the installation through-hole
The 4th sealing element is set, the 4th sealing element is located at the second end of fluid bore.
In one embodiment, the conduction element ontology does not protrude from the installation through-hole.
In one embodiment, the conduction element further includes the second lid that the second end of the conduction element ontology is arranged in
Plate, and the holding tank for accommodating second cover board is set in the second end of the piston body, in second cover board and institute
It states and second seal is set between the slot bottom of holding tank.
In one embodiment, the limit for limiting the position of the conduction element is set in the second end of the piston body
Part.
In one embodiment, the locating part is configured to match the netted of the shape of the piston body.
In one embodiment, the conduction element further includes the first lid that the first end of the conduction element ontology is arranged in
Plate, first cover board can cooperate with the first end face contact of the piston body, and on first cover board setting with
The fluid inlet of the fluid passage connection.
Compared with the prior art, the advantages of the present invention are as follows, the devices to be just able to achieve the first space and the by conduction element
Two space uniline on or off, structure are simple.The device utilizes the longitudinal movement of piston body, and changes the first space and the
The volume in two spaces, to play the role of pressurization or decompression to gas.As a result, by the present apparatus be used for gas source and sampling bottle it
Between, play the role of adjusting pressure.Impact of the high pressure gas to sampling bottle is avoided using the present apparatus, in turn avoids sampling
The incomplete problem of gas displacement in bottle.
Detailed description of the invention
The preferred embodiment of the present invention is described in detail below in conjunction with attached drawing.In figure:
Fig. 1 shows device for sampling according to the present invention.
Fig. 2 shows the structure chart of piston body according to the present invention.
Fig. 3 shows the sectional view of piston body and conduction element according to an embodiment of the invention.
Fig. 4 shows the sectional view of piston body and conduction element according to another embodiment of the invention.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be further described.
Fig. 1 shows device for sampling 100 according to the present invention.As shown in Figure 1, device 100 includes container 1, lives
Cock body 2 and conduction element 3 (can be by finding out in Fig. 3 or 4).Wherein, container 1 has entrance 4, for the gas source or collection with well head
Gas source in gas station is connected.And the outlet 5 of container 1, for being connected with sampling bottle.Piston body 2 setting in the container 1 and with
The sealed contact of container 1 divides container 1 for the first space 6 and second space 7.Piston body 2 under force can be along container 1
Longitudinal movement, with change the first space 6 and second space 7 volume fraction, to play increasing to natural gas gas therein
The effect of pressure or decompression.As shown in figure 3, conduction element 3 is arranged on piston body 2.Under gas pressure effect, 3 energy of conduction element
Along the longitudinal movement of piston body 2, to realize unilaterally connected and the cut-off in the first space 6 and second space 7.
During using the present apparatus 100, by the position of regulating piston body 2, it is empty to be just adjustable the first space 6 and second
Between 7 volume, to play the role of pressurization or decompression to gas therein.Pressure has just been able to achieve by the present apparatus 100 as a result,
Strong two-way variation.In addition, this 100 structure of device is simple, and it is easy to operate, it is particularly suitable for field gas production.
As shown in Figure 1, device 100 further includes distance rod 8.One end of distance rod 8 is connected on the end face of piston body 2, separately
Extended by one end of container 1 one end.It as a result, can exert a force distance rod 8 with actuation piston body 2 along the longitudinal movement of container 1,
Realize the volume variation of the first space 6 and second space 7.
Distance rod 8 can be threadedly coupled with container 1, that is, when screwing distance rod 8, it can be achieved that piston body 2 is along appearance
The longitudinal movement of device 1.In the case where distance rod 8 is threadedly coupled with container 1, in order to avoid piston body 2 as distance rod 8 does circle
Zhou Yundong, distance rod 8 and piston body 2 are hinged.It is, piston body 2 can only in distance rod 8 relative in 1 rotary course of container
Longitudinal movement is not followed by the rotation of distance rod 8.The device 100 of this structure, structure is simple, convenient manual operation.Therefore, have
There is the use of the device 100 of this structure not by environmental restrictions, is particularly suitable for field.It should be noted that in order to guarantee to live
The stroke of cock body 2, the longitudinal length of distance rod 8 are greater than the longitudinal length of container 1.In order to avoid the gas gone out from outlet 5
Leakage is to influence measurement effect, it is preferable that distance rod 8 can extend container 1 with 5 corresponding one end of outlet by container 1
Except.
Force operation is carried out to distance rod 8 for convenience, handle is set in the end point for extending container 1 of distance rod 8
26.Distance rod 8 can be easily manipulated by the handle 26.Simultaneously because lever principle, can to revolve by handle 26
The operation for twisting distance rod 8 is more labor-saving.
Certainly, piston body 2 can also be realized in longitudinal feeding or retrogressing by the distance rod 8 of non-screw shaped.It is,
It pushes 8 longitudinal movement of distance rod and drives 2 longitudinal movement of piston body.In that case it is possible to manual operation difficulty occur
The problem of.So that thrust piece (not shown) is arranged in one end for extending container 1 of distance rod 8.Such as thrust piece can
Think motor.And in order to enable the use of device 100 is few by environmental restrictions, thrust piece can be the hydraulic devices such as jack.And
Operation is stretched since very heavy head part can only carry out top, is as a result, the reciprocating motion for realizing piston body 2, it can be equal at the both ends of piston body 2
Distance rod 8 is set.In addition, settable first seal is (in figure between distance rod 2 and container 1 for the accuracy for guaranteeing measurement
It is not shown), to prevent gas from letting out.Preferably, first seal is the dynamic sealings such as packing box seal or expansion ring seale.
In order to guarantee that the operation stability of piston body 2, distance rod 8 are connected at the center of piston body 2.To distance rod 8
The power for being applied to piston body 2 is relatively uniform in peripheral direction, ensure that the operation stability of piston body 2.Meanwhile also to guarantee
The area that distance rod 8 is applied on piston body 2 is sufficiently large, to prevent the power on piston body 2 from excessively concentrating, and makes to piston body 2
At damage.The area of section of distance rod 8 is in by container 1 to being gradually reduced on outer direction as a result,.Guaranteed by this set
The contact area of distance rod 8 and piston body 2.It (hereinafter can be detailed simultaneously as being additionally provided with conduction element 3 on piston body 2
Description), distance rod 8 can not influence the setting of conduction element 3.The contact area and piston body 2 of piston body 2 and distance rod 8 as a result,
The ratio between area of section be 1:20-1:10.
As shown in Fig. 2, installation through-hole 9 is arranged on piston body 2.As shown in Figures 3 and 4, conduction element 3 has conduction element ontology
10, conduction element ontology 10 can pass through installation through-hole 9.It is provided with longitudinal gas passage 11 on conduction element ontology 10, and is leading
The gas orifice 12 being connected to gas passage 11 is provided on the side wall of the second end of parts ontology 10.It is vertically moved in conduction element 3
When, gas orifice 12 can remove or move into installation through-hole 9, and the first space 6 is connected to 7 selectivity of second space.
In the container 1, the gas in the first space 6 acts on the pressure on conduction element ontology 10 greater than in second space 7
Gas when acting on the pressure on conduction element ontology 10, under power effect, conduction element 3 is moved from first end to the second extreme direction
It is dynamic, so that gas orifice 12 is in installation through-hole 9 by extending outwardly, to be connected to the first space 6 and second space 7.Then gas can
To be flowed from the first space 6 by gas passage 11 and gas orifice 12 to second space 7.On the contrary, when conduction element ontology 10 exists
When suffered pressure is less than pressure suffered in second space 7 in first space 6, pressure push conduction element 3 from second end to
First extreme direction is mobile, so that gas orifice 12 enters in installation through-hole 9, and cooperates with the inner wall of installation through-hole 9, thus cut-off
First space 6 is connected to second space 7.Gas is also prevented to be flowed from second end to the first extreme direction at this time.This device 100
Structure is simple, by the pressure difference of 3 two sides of conduction element, the movement of conduction element 3 is pushed just to be able to achieve the first space 6 and second space 7
One-way conduction and cut-off.
In order to guarantee the sensitivity of device 100, make its under the action of very little pressure difference also can responsive movement, conduction element sheet
Confficient of static friction between body 10 and installation through-hole 9 is not more than 0.05.For example, between conduction element ontology 10 and installation through-hole 9
Confficient of static friction can be 0.03.
Conduction element ontology 10 can be structured as rotary body, correspondingly, the shape and 10 shape of conduction element ontology of installation through-hole 9
Shape matching.According to the present invention, as shown in figure 3, conduction element ontology 10 is it is so structured that its first end is cylindric, and second end is
It is coniform, also, the area in the section at coniform place is being gradually reduced from second end on the first extreme direction.In conduction element ontology
The 4th sealing element 13 can be set between 10 and installation through-hole 9, and the 4th sealing element 13 is located at the second end of fluid bore 12.It is excellent
Selection of land, the 4th sealing element 13 are O-ring seal.In conduction element ontology 10 from first end to during the second end motion, this shape
The second end of the conduction element ontology 10 of shape does not interfere the longitudinal movement of conduction element ontology 10.Simultaneously as conduction element ontology 10
First end componental movement to installation through-hole 9 conical section be clearance fit, so that this arrangement reduce conduction element sheets
Frictional force between body 10 and installation through-hole 9 improves the operation sensitivity of conduction element ontology 10.In conduction element ontology 10 by
To during the first end motion, the second end of conduction element ontology 10 plays the role of as the limit of conduction element ontology 10 at two ends.
Meanwhile when conduction element ontology 10 movement in place when, the 4th sealing element 13 work with prevent gas from the second end of piston body 2 to
The first end of piston body 2 is revealed.The second end of conduction element ontology 10 does not protrude from the second end face of installation through-hole 9.In this hair
In bright, second end is identical as one end locating for second space 7, and first end is identical as one end locating for the first space 6.
According to the present invention, conduction element 3 further includes the second cover board 14 that the second end of conduction element ontology 10 is arranged in, by Fig. 4
In it can be seen that.Correspondingly, first holding tank 15 is set in the second end of piston body 2, the first holding tank 15 is for accommodating the
Two cover boards 14.To make, the processing is simple, it is preferable that the second cover board 14 is configured to the plate being laterally arranged.Such as can for it is round,
One of rectangular, polygon and ellipse etc..Correspondingly, the shape of the first holding tank 15 and the second cover board 14 are adapted.
In addition, second seal 16 is arranged between the second cover board 14 and the slot bottom of the first holding tank 15.In the first space 6
When being in off state with second space 7, sealed cooperation between the second cover board 14 and the slot bottom of the first holding tank 15, to realize
The sealing in the first space 6 and second space 7.
Groove 17 is set at the slot bottom of the first holding tank 15.Wherein, the effective diameter of groove 17 is less than the first holding tank
15 effective diameter.When conduction element ontology 10 is mobile to the second extreme direction, gas orifice 12 can be connected to groove 17, in order to gas
The flowing of body.
Preferably, second seal 16 is arranged in the first end face of the second cover board 14, and second seal 16 is in radial direction
On can extend at groove 17.The sealing between the second cover board 14 and the first holding tank 15 is enhanced by this set.Into one
Preferably, second seal 16 is elastic rubber sealing ring to step.Certainly, second seal 16 also can be set in the first holding tank
On 15 slot bottom, the sealing that is also able to achieve between the second cover board 14 and the first holding tank 15.
The second end face of second cover board 14 does not protrude the first holding tank 15.It is, in conduction element ontology 10 to second end
Direction is mobile, and when gas orifice 12 is connected to second space 7, the second end face of the second cover board 14 is still in the first holding tank 15
It is interior, rather than it is axially projecting in the first holding tank 15.In the case that even piston body 2 is contacted with the inner wall of container 1 as a result,
Second cover board 14 is not also contacted with the inner wall of container 1.In this state, the inner wall of container 1 cannot act on the second cover board
On 14, the conducting in the first space 6 and second space 7 is had no effect on.
In the case where the second end of conduction element 3 is provided with the second cover board 14, conduction element ontology 10 can be set to cylinder
Shape.This structure is simple, and is able to satisfy use demand.But conduction element ontology 10, which may be arranged as above-mentioned first end, is
Cylindric and second end is coniform structure, although 3 slightly complicated of conduction element of this structure, its frictional force is small, and
And also it is able to achieve dual-seal.
Conduction element 3 further includes the first cover board 18 that the first end of conduction element ontology 10 is arranged in.First cover board 18 is configured to
Radial plate, and can cooperate with the first end face contact of piston body 2.In addition, setting and gas passage on the first cover board 18
The gas access 19 of 11 connections.Conduction element ontology 10 from first end into the second extreme direction moving process, the first cover board 18 rises
The effect limited for conduction element 3 is arrived.Meanwhile first cover board 18 can also receive pressure brought by gas in the first space 6,
To drive conduction element ontology 10.
The face area of the second end of conduction element 3 is greater than the face area of first end.To have the second cover board 14 and first
For the conduction element 3 of cover board 18.That is area of section of the area of section of the second cover board 14 greater than the first cover board 18.Preferably,
The area of section ratio of the area of section of two cover boards 14 and the first cover board 18 is 2:1-5:1.For example, the area of section of the second cover board 14
Area of section ratio with the first cover board 18 is 3:1.By this set, the second cover board 14 can be responded rapidly to be become in gas pressure
Change, and it is mobile to the first extreme direction.The second cover board 14 is improved as a result, and reacts on the speed of gas pressure change, to improve
Measurement accuracy.
It should be noted that conduction element 3 of the invention is not limited to have the first cover board 18.And in order to limit conduction element
Conduction element 3 can also be configured to other structures form by the longitudinal stroke of ontology 10.For example, can be in the inner wall of installation through-hole 9
The longitudinal stroke groove (not shown) of upper setting, and being arranged on the outer wall of conduction element ontology 10 can extend in stroke groove
Protrusion is matched by protrusion with the both ends cell wall of stroke groove conduction element ontology 10 is along 9 longitudinal movement of installation through-hole during
It closes to limit the longitudinal stroke of conduction element ontology 10.For another example can also be arranged in the second end of piston body 2 for limiting second
The locating part (not shown) of cover board 14.In order to not influence the flowing of gas, locating part can be structured as the end with piston body 2
The identical reticular structure of face shape.In conduction element ontology 10 into second end motion process, when the second end of conduction element ontology 10
When encountering locating part, the position of conduction element ontology 10 is defined.
According to the present invention, gas access 19 and gas passage 11 are integrated the longitudinal hole of manufacture, and gas orifice 12 is substantially
The through-hole of lateral arrangement.Preferably, gas orifice 12 can be multiple, and be evenly arranged on the side wall of conduction element ontology 10.It is logical
Cross the stationarity that this setup increases gas flowing.Also, the conduction element 3 with this structure is simple to manufacture, and is easy to
It realizes.
According to the present invention, multiple conduction elements 3 can be set on piston body 2, and conduction element 3 is in the circumferential direction of piston body 2
It is uniformly distributed.
Further, in order to realize that the quantization to the pressure of gas is adjusted, device 100 further includes the position for indicating piston body 2
The scale 20 set, as shown in Figure 1.This scale 20 can be set on the outer wall of container 1, and scale 20 will be to distance rod 8
One end of propelling container 1 extends, to judge the position of piston body 2 by the lengthwise position for measuring distance rod 8.In order to optimize dress
Set 100 shape, it is preferable that scale 20 can be connect by pull mode or the mode of folding with container 1.
Certainly, if container 1 is made of clear material, for example, polytetrafluoroethylene (PTFE) etc., scale 20 can directly be indicated in appearance
On the wall of device 1.The location of piston body 2 can be more intuitively seen in this way, serve as intermediate ginseng by distance rod 8 without being used in
According to.
In addition, scale 20 can also be set up directly on distance rod 8.Further, the scale of scale 20 is etched in thrust
On the wall of bar 8.Pass through this set, it is easy to the longitudinal movement of piston body 2 is rapidly directly directly read from distance rod 8
Position or distance.
By the change in location of piston body 2, to obtain the variation of the volume in the first space 6 and second space 7, to calculate
The pressure change of corresponding gas out, this exactly indicates the purpose of scale 20.In order to faster calculate gas pressure intensity variation, mark
The scale of ruler 20 can be from 0 to 1, one lattice of every 0.01 mark.It is arranged in the case where chamber wall in scale 20, scale 20 is from entrance 4
One end to outlet 5 one end successively decrease.It is, scale " 0 " is in one end of outlet 5.And the etching of scale 20 is in distance rod 8
In the case of, scale 20 is incremented by from one end of entrance 4 to one end of outlet 5.
For the ease of conveying gas, and the connection with gas source or sampling bottle, it is set into one end of the entrance 4 of container 1
Implication mouth 21, to receive the gas from gas source.Meanwhile setting is worked off one's feeling vent one's spleen mouth 22 in one end of the outlet of container 15, with can be with
Sampling bottle connection.It is easy to connecting tube is arranged on entrance gas nozzle 21 or outlet gas nozzle 22 by this set, to realize gas
The conveying of body.
In order to adapt to different gas source and sampling bottle, device 100 further includes multiple regulation pipes with different jointings
(not shown).It is, one end of regulation pipe is configured to be connected at entrance gas nozzle 21 or outlet gas nozzle 22, and it is another
End has different jointings to adapt to different gas source and sampling bottle.By this set, expand device 100 uses model
It encloses, improves its versatility.
The structure of entrance gas nozzle 21 and the outlet this protruding-type of gas nozzle 22, so that entrance gas nozzle 21 or/and outlet gas nozzle 22
In transport or use process, it is easily deformed and even damages.To guard member be arranged in entrance gas nozzle 21 and (not show in figure
Out), also guard member can be set at outlet gas nozzle 22 certainly.Preferably, guard member can be structured as the shape for being matched with container 1
Shape.For example, container 1 be it is cylindric, then guard member can be set as circular, be connected with container 1, by entrance
Gas nozzle 21 or outlet gas nozzle 22 are provide with wherein.Meanwhile the device 100 with this structure, shape is neat, convenient for collecting and fortune
It is defeated.In addition, by guard member can also protection setting the both ends of container 1 other components, for example, the pressure that will hereinafter refer to
Power table 23.
Preferably, guard member can be threadedly arranged on container 1.It can easily be revolved by this set
Guard member is twisted to realize installation and removal, to generate space limitation to other attended operations or repair operation so as not to guard member.
Certainly, guard member may be arranged as other structures form, for example, hood configuration only open at one end.It is this
The opening of the guard member of structure is connected with container, to form protection chamber between guard member and container 1.The guarantor of this form
Guard only uses under the states such as transport, and in gas transmission connection use process, under needing to dismantle guard member from container 1
Come.But in the case where non-gas transmission connects use state, the guard member of this structure is in entrance gas nozzle 21 and outlet gas nozzle 22
In closed environment, other than it can play anti-collide with antisitic defect, moreover it is possible to prevent foreign matter from entering entrance gas nozzle 21 and working off one's feeling vent one's spleen
In mouth 22, the blocking for causing entrance gas nozzle 21 and exporting gas nozzle 22 is avoided.
According to the present invention, the inlet porting valve 24 between entrance gas nozzle 21 and the inner cavity of container 1, to realize container 1 and gas
The connection and cut-off in source.Similarly, outlet valve 25 is set between outlet gas nozzle 22 and the interior space of container 1, to realize container 1
With the connection and cut-off of sampling bottle.
It repairs and cleans for the ease of the inside to container 1, container 1 is set as split type structure.For example, container 1
Including container body (not shown) and the container cover (not shown) being connect with container body.Preferably, container body
It is detachable connection with container cover.Container cover setting is existed it is further preferred that the modes such as being connected through a screw thread or being clamped
On container body.It should be noted that, it is also necessary to sealing element is set between container body and container cover to guarantee in container 1
The sealing effect of chamber.When going wrong, and needing replacing in some components (such as piston body 2), above structure form is facilitated
Container 1 is disassembled and installed.
In addition, in order to guarantee not vertically moving in gas pressure lower piston body 2, and piston body 2 can only be artificial
It is moved under external force, the confficient of static friction between piston body 2 and the inner wall of container 1 is between 0.5-1, and in 2 He of piston body
Lubricating oil is set between the inner wall of container 1.
According to the present invention, container 1 can be cylindrical, but container 1 is not limited to this structure.For example, container 1 may be used also
Think square body etc..Container 1 can also use the made of metal such as stainless steel or aluminium alloy other than available polytetrafluoroethylene (PTFE) is made
It makes.
Below with reference to the application method of Fig. 1-4 detailed description device 100.
It should be noted that the pressure that will be greater than the suitable working range of sampling bottle is set to high-pressure air source, and it is less than and adopts
The pressure of the suitable working range of sample bottle is defined as low pressure.For example, the pressure range of the suitable services of sampling bottle is about 0.6-
15 megapascal.Then the high pressure in the application is not less than 15 megapascal, and the low pressure in the application is greater than atmospheric pressure and less than 0.6 megapascal.
For high-pressure air source, firstly, control crank 26, makes piston body 2 move axially to one end of outlet 5.Implication will be entered
Mouth 21 is connected with gas source, and after opening inlet valve 24 and outlet valve 25, opening gas source makes natural gas enter container 1 by entrance 4
Inner cavity in.At this point, since the gas in the first space 6 acts on the pressure on conduction element 3 greater than conduction element 3 in second space
The pressure being subject in 7, it is, the pressure of the first end of conduction element 3 be greater than second end pressure, thus conduction element ontology 10 from
First end is mobile to second end, and the first space 6 is connected to second space 7.After gas passes through conduction element 3, by 5 stream of outlet
Out.So that gas is circulated from entrance 4 to outlet 5 a period of time, that is, completes the flushing of gas circuit.
After the completion of rinsing to gas circuit, after continuing ventilation a period of time, outlet valve 25 is closed, and close inlet valve 24.This
When second space 7 in gas pressure be P1.If it is desire to the gas that pressure is P2 is obtained, the value for the P2 ratio P1 that converts.Manipulation
It is axial mobile to one end of entrance 4 to make piston body 2 for handle 26, and is moved to the position that scale is P2/P1.Due to being connected at this time
Part 3 is on the state in the first space 6 and second space 7, and therefore, piston body 2 can be in the axial direction of container 1 to entrance 4
One end is mobile.Disconnect the connection of entrance gas nozzle 21 and gas source.Inlet valve 24 is opened, the gas in the first space 6 is made to pass through entrance 4
It distributes.At this point, then the air pressure in the first space 6 reduces since the gas in the first space 6 is to external diffusion, be then connected
There is pressure difference in the both ends of part 3, and this pressure difference pushes conduction element ontology 10 mobile from second end to the first extreme direction, with cut-off
The connection in the first space 6 and second space 7.After giving out to the gas in the first space 6, operation distance rod 8 makes piston body 2
It is mobile to the first extreme direction.At this point, the volume of second space 7 increases, then the drop of pressure for the gas being located therein.In piston body
After 2 are moved to one end of entrance 4, outlet gas nozzle 22 is connected to sampling bottle.At this point, it is P2's that sampling bottle, which can receive pressure,
Gas.
For low-pressure gas source, firstly, control crank 26, makes piston body 2 move axially to one end of entrance 4.Implication will be entered
Mouth 21 is connected with gas source, and after opening inlet valve 24 and outlet valve 25, opening gas source makes natural gas enter container 1 by entrance 4
Inner cavity in.At this point, the pressure of the first end of conduction element 3 is greater than the pressure of second end, so that conduction element ontology 10 is from first end
It is mobile to second end, the first space 6 is connected to second space 7.After gas passes through conduction element 3, by 5 outflow of outlet.Make gas
Body circulates a period of time from entrance 4 to outlet 5, that is, completes the flushing process of gas circuit.
After the completion of rinsing to gas circuit, after continuing ventilation a period of time, outlet valve 25 is closed.At this time in the inner cavity of container 1
Gas pressure be P3.If it is desire to the gas that pressure is P4 is obtained, the value for the P3 ratio P4 that converts.Control crank 26, makes piston
The axial one end to outlet 5 of body 2 is mobile, and is moved to the position that scale is P3/P4.During mobile piston body 2, second
Gas in space 7 is compressed, and pressure increases, and thus the gas pressure in second space 7 suffered by conduction element 3 is big
Gas pressure in the first space 6 being subject to, under the action of pressure difference, conduction element ontology 10 is mobile to the first extreme direction,
Extend to fluid bore 12 among installation through-hole 9 to end being connected to for the first space 6 and second space 7.Due to second space 7
Volume becomes smaller, and is pressurized in gas therein and increases its pressure.Finally, outlet gas nozzle 22 is connected to sampling bottle.At this point,
Sampling bottle can receive the gas that pressure is P4.
In the application, term " longitudinal direction " and the direction in Fig. 1 from left to right or from right to left, and term " transverse direction " is vertical
In the direction of " longitudinal direction ".Term " first end " is identical as one end of entrance 4, and term " second end " it is opposite with " first end " and with
One end of outlet 5 is identical.
The foregoing is merely the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, Ren Heben
The technical staff in field can be easy to carry out and be altered or varied in technical scope disclosed by the invention, and this change or change
Change should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of device for sampling characterized by comprising
One end is provided with entrance and the other end is provided with the container of outlet,
The piston body that can be axially moved in the above-described container and along the container is set, and the container is divided by the piston physical efficiency
First space and second space,
Conduction element on the piston body is set, and the conduction element can move under pneumatic pressure along institute's piston body to realize described
The connection and cut-off in one space and the second space,
Gas in first space acts on the pressure on the conduction element greater than the gas effect in the second space
For pressure on the conduction element to drive the conduction element to be connected to first space and the second space, described second is empty
The gas that the pressure that interior gas acts on the conduction element is greater than in first space acts on the conduction element
Pressure to drive the conduction element to end first space and the second space, one end of the entrance of container is set into
Outlet valve is arranged in one end of mouth valve, the outlet of container,
When to high pressure gas decompression in the container, the outlet valve and the inlet valve are closed, then by the piston body edge
It is moved to predeterminated position towards the direction of first end, then opens the inlet valve, the piston body is moved to the one of entrance
End,
When to low-pressure gas pressurization in the container, the outlet valve is closed, then by the piston body along towards second end
Direction is moved to predeterminated position.
2. the apparatus according to claim 1, which is characterized in that the conduction element, which has to pass through, to be arranged in the piston body
On installation through-hole conduction element ontology, it is logical that the fluid that can be connected to first space is provided on the conduction element ontology
Road is provided with the fluid bore being connected to the fluid passage on the second end side wall of the conduction element ontology, in the conducting
When part vertically moves, the fluid bore can remove or move into the installation through-hole and selectively be connected to the second space.
3. the apparatus of claim 2, which is characterized in that the effective diameter of the second end of the conduction element ontology is greater than
The effective diameter of first end, and the shape of the installation through-hole is matched with the shape of the conduction element ontology.
4. device according to claim 3, which is characterized in that the second end of the conduction element ontology is configured to cone cell, the
One end is configured to column.
5. device according to claim 4, which is characterized in that logical in the conicoid of the conduction element ontology and the installation
The 4th sealing element is set between the surface of hole contact, the 4th sealing element is located at the second end of the fluid bore.
6. device according to claim 5, which is characterized in that the conduction element ontology does not protrude from the installation through-hole.
7. the device according to any one of claim 2 to 6, which is characterized in that the conduction element further includes being arranged in institute
The second cover board of the second end of conduction element ontology is stated, and is arranged in the second end of the piston body for accommodating second cover board
Holding tank, second seal is set between second cover board and the slot bottom of the holding tank.
8. the device in one-way on state according to any one of claim 2 to 6, which is characterized in that the of the piston body
The locating part for limiting the position of the conduction element is arranged in two ends.
9. device in one-way on state according to claim 8, which is characterized in that the locating part is configured to match the piston
The shape of body it is netted.
10. the device according to any one of claim 2 to 6, which is characterized in that the conduction element further includes being arranged in institute
The first cover board of the first end of conduction element ontology is stated, first cover board can match with the first end face contact of the piston body
It closes, and the fluid inlet being connected to the fluid passage is set on first cover board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418734.6A CN106353152B (en) | 2015-07-16 | 2015-07-16 | Device for sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418734.6A CN106353152B (en) | 2015-07-16 | 2015-07-16 | Device for sampling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106353152A CN106353152A (en) | 2017-01-25 |
| CN106353152B true CN106353152B (en) | 2019-11-08 |
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ID=57842672
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510418734.6A Active CN106353152B (en) | 2015-07-16 | 2015-07-16 | Device for sampling |
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| Country | Link |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367404A (en) * | 2017-09-11 | 2017-11-21 | 王世禄 | Gas sampling device |
| CN113431930B (en) * | 2021-06-30 | 2023-05-23 | 蜂巢能源科技有限公司 | Multi-way valve and collection device with same |
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|---|---|---|---|---|
| CN87206606U (en) * | 1987-04-21 | 1988-01-06 | 胡煜 | High efficiency aerated valve |
| JP2001004054A (en) * | 1999-06-23 | 2001-01-09 | Kasahara Motors:Kk | Air valve for tire |
| CN201247174Y (en) * | 2008-09-02 | 2009-05-27 | 陈书乾 | Cylindrical positive-pressure sampler for gas detection tube |
| CN101975685A (en) * | 2010-11-09 | 2011-02-16 | 北京市劳动保护科学研究所 | Gas sampling apparatus adopting helical structure |
| CN203705228U (en) * | 2014-03-07 | 2014-07-09 | 国家电网公司 | Sulfur hexafluoride gas collecting device |
| CN204202952U (en) * | 2014-11-17 | 2015-03-11 | 成都蓝宇科维科技有限公司 | A kind of portative gas sampler |
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2015
- 2015-07-16 CN CN201510418734.6A patent/CN106353152B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206606U (en) * | 1987-04-21 | 1988-01-06 | 胡煜 | High efficiency aerated valve |
| JP2001004054A (en) * | 1999-06-23 | 2001-01-09 | Kasahara Motors:Kk | Air valve for tire |
| CN201247174Y (en) * | 2008-09-02 | 2009-05-27 | 陈书乾 | Cylindrical positive-pressure sampler for gas detection tube |
| CN101975685A (en) * | 2010-11-09 | 2011-02-16 | 北京市劳动保护科学研究所 | Gas sampling apparatus adopting helical structure |
| CN203705228U (en) * | 2014-03-07 | 2014-07-09 | 国家电网公司 | Sulfur hexafluoride gas collecting device |
| CN204202952U (en) * | 2014-11-17 | 2015-03-11 | 成都蓝宇科维科技有限公司 | A kind of portative gas sampler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106353152A (en) | 2017-01-25 |
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