CN106353146A - Sampling instrument - Google Patents
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- CN106353146A CN106353146A CN201510418728.0A CN201510418728A CN106353146A CN 106353146 A CN106353146 A CN 106353146A CN 201510418728 A CN201510418728 A CN 201510418728A CN 106353146 A CN106353146 A CN 106353146A
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Abstract
The invention relates to a sampling instrument. The sampling instrument comprises a container with an inlet being formed in one end and an outlet being formed in the other end, a piston body arranged in the containing and capable of axially moving along the container, a conducting piece arranged on the piston body, an inlet gas nipple arranged in the inlet of the container, and an outlet gas nipple arranged in the outlet of the container, wherein the piston body can divide the container into a first space and a second space; the conducting piece can move along the piston to communicate and cut off the first space and the second space. The sampling instrument can realize bidirectional adjustment of gas pressure.
Description
Technical field
The present invention relates to natural gas sampling technique field is and in particular to a kind of sampling instrument.
Background technology
It is continuously increased with proportion in national energy consumption for the natural gas, the demand of natural gas is also persistently increased
Long, therefore, in oil and gas industry production field, find that more natural gass are the subject matter that explorationist faces.
In order to solve this problem, the origin cause of formation to natural gas, Cheng Zang is needed to study, accordingly, it would be desirable to natural gas
Sampling is to meet the needs of research.
In prior art, sampling to natural gas, mainly use metal or rubber tube by well head or collection
Source of the gas in gas station is connected with sampling bottle, by Valve controlling air-flow sample introduction.Due to gas well liquid loading well import or
Pressure after person gas gathering station separator is different, when being collected using sampling bottle, it is possible that problem.For example,
For the very high gas well of gas pressure intensity, gases at high pressure easily cause the impact to sampling bottle, and the valve to sampling bottle
Door, sealing ring etc. cause irreversible injury.Thus, when collecting gases at high pressure using sampling bottle, exist and adopt
The risk of sample bottle leakage, thus affect the long-term safety of gas sample preservation.
Again for example, because current still dependence carries out the mode of gas displacement to sampling to the air in sampling bottle
Air in bottle is emptied.If gas sample gas pressure intensity is relatively low, it is difficult to put the air in sampling bottle completely
Change.Accordingly, for the very low gas well of air pressure, in sampling bottle, air easily replaces deficiency, causes gas sample pollution to ask
Topic.And the current method of sampling, the gas sample of well head can not be carried out with blower operations again, cause the gas of low pressure well
Sample is difficult to replace completely.
The pressure of high-pressure gas well well head in prior art, can be reduced using air relief valve.But there is no related increasing
Feeder apparatus carries out to gas sample increasing operation.Especially, blower operations can not carried out to gas sample in prior art
Also the device of decompression operation can be carried out.
Accordingly, it would be desirable to invent a kind of sampling instrument, it is allowed to both to carry out blood pressure lowering to high pressure gas sample, again can be right
Low pressure gas sample is pressurized to meet the displacement of different pressure gas.
Content of the invention
For the above-mentioned technical problem in the presence of prior art, the present invention proposes a kind of sampling instrument.This sampling
Instrument can achieve the two-way change of pressure.That is to say, high-pressure gas well can be reduced pressure by this sampling instrument, will
Exceed sampling bottle pressure range air pressure drop to the safe air pressure of sampling bottle within the scope of.Meanwhile, using this sampling
Instrument can also be pressurized to low-pressure gas, thus it is ensured that replacement result to air in sampling bottle, to ensure to adopt
The purity of all product.In addition, this sampling instrument structure simple it is easy to processing.
According to the invention it is proposed that a kind of sampling instrument, comprising:
One end is provided with entrance and the other end is provided with the container of outlet,
In a reservoir and can be along the piston body of container axially-movable, piston physical ability divides the container into the first space for setting
And second space,
Setting conduction element on the piston body, conduction element can move along institute's piston body to realize the first space and second
The connection in space and cut-off,
It is arranged on the entrance valve of the porch of container, and
It is arranged on the outlet valve in the exit of container.
In one embodiment, the arrival end of container and at least end of the port of export are provided with guard member.
In one embodiment, guard member is configured to be matched with the ring-type of the shape of container.
In one embodiment, guard member is configured to be matched with the hood-like of the shape of container.
In one embodiment, guard member and container detachable connection.
In one embodiment, container includes container body and the container cover with container body detachable connection.
In one embodiment, conduction element has the conduction element basis that can pass through setting installation through-hole on the piston body
Body, is provided with the fluid passage that can connect with the first space on conduction element body, the second of conduction element body
The fluid bore being connected with fluid passage is provided with the wall of side, when conduction element vertically moves, fluid bore can remove
Or move into installation through-hole and connect with second space selectivity.
In one embodiment, conduction element also includes being arranged on second cover plate at the second end of conduction element body, and
It is provided for accommodating the first holding tank of the second cover plate at the second end of piston body, in the second cover plate and the first receiving
Second seal is set between the bottom land of groove.
In one embodiment, also include distance rod, container is extended in one end of distance rod, distance rod another
End is connected with piston body.
In one embodiment, it is provided with valve at entrance valve and at outlet valve.
Compared with prior art, it is an advantage of the current invention that this sampling instrument just enables the first sky by conduction element
Between and second space single file on or off, structure is simple.This sampling instrument vertically moving using piston body,
And change the volume of the first space and second space, so that gas is played with the effect of supercharging or blood pressure lowering.Thus,
This sampling instrument is used between source of the gas and sampling bottle, serves the effect adjusting pressure.Kept away using this sampling instrument
Exempt from the impact to sampling bottle for the gases at high pressure, turn avoid the incomplete problem of gas displacement in sampling bottle.
Brief description
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.In in figure:
Fig. 1 show according to the present invention sampling instrument.
Fig. 2 shows the structure chart of the piston body according to the present invention.
Fig. 3 shows the profile of piston body according to an embodiment of the invention and conduction element.
Fig. 4 shows the profile of piston body according to another embodiment of the invention and conduction element.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not painted according to actual ratio
System.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Fig. 1 shows the sampling instrument 100 according to the present invention.As shown in figure 1, sampling instrument 100 include container 1,
Piston body 2 and conduction element 3 (can be found out by Fig. 3 or 4).Wherein, container 1 has entrance 4, uses
Source of the gas in the source of the gas or gas gathering station with well head is connected.And the outlet 5 of container 1, for sampling bottle
It is connected.Piston body 2 arrange in the container 1 and sealed with container 1 contact, container 1 is divided into first empty
Between 6 and second space 7.Piston body 2 under force can vertically moving along container 1, to change first
Space 6 and the volume of second space 7, thus play the effect of supercharging or blood pressure lowering to natural gas gas therein.
As shown in figure 3, conduction element 3 is arranged on piston body 2.Under gas pressure effect, conduction element 3 can be along
The lengthwise movement of piston body 2, to realize unilaterally connected and the cut-off in the first space 6 and second space 7.
During this sampling instrument 100, by the position of regulating piston body 2, just can adjust the first space
6 and the volume of second space 7, so that gas therein is played with the effect of supercharging or blood pressure lowering.Thus, pass through
This sampling instrument 100 has just enabled the two-way change of pressure.In addition, this sampling instrument 100 structure is simple, operation
Convenient, it is particularly suited for field gas production.
As shown in figure 1, sampling instrument 100 also includes distance rod 8.One end of distance rod 8 is connected to piston body 2
End face on, the other end is extended by one end of container 1.Thus, distance rod 8 can be exerted a force with actuation piston
Body 2, along the lengthwise movement of container 1, realizes the volume change of the first space 6 and second space 7.
Distance rod 8 can be threadeded with container 1, that is, when screwing distance rod 8, achievable piston body
2 along container 1 lengthwise movement.In the case that distance rod 8 is threadeded with container 1, in order to avoid work
Cock body 2 moves in a circle with distance rod 8, and distance rod 8 is hinged with piston body 2.It is, in distance rod
8 with respect in container 1 rotary course, and piston body 2 can only vertically move, and be not followed by distance rod 8 and rotate.
The sampling instrument 100 of this structure, structure is simple, convenient manual operation.Therefore, there is the sampling of this structure
The use of instrument 100 is not limited by environment, is particularly suited for field.It should be noted that, in order to ensure piston body
2 stroke, the longitudinal length of distance rod 8 is greater than the longitudinal length of container 1.In order to avoid going out from outlet 5
The gas leakage gone is to affect measurement effect it is preferable that distance rod 8 can pass through the relative with outlet 5 of container 1
The one end answered is extended outside container 1.
For convenience distance rod 8 is carried out with force operation, sets in the end extending container 1 of distance rod 8
Put handle 26.Distance rod 8 can easily be manipulated by this handle 26.Simultaneously because lever principle, lead to
Cross handle 26 so that the operation screwing distance rod 8 is more laborsaving.
Certainly, piston body 2 in longitudinal feeding or is retreated and can also be realized by the distance rod 8 of non-screw shaped.
It is, promoting distance rod 8 lengthwise movement and driving piston body 2 lengthwise movement.In this case, having can
The difficult problem of manual operation can occur.Thus, can push away in one end setting extending container 1 of distance rod 8
Power part (not shown).Such as thrust piece can be motor.And so that the use of sampling instrument 100 is subject to
Environment limits less, and thrust piece can be the hydraulic means such as jack.And stretch behaviour because very heavy head part can only carry out top
Make, thus, for realizing the reciprocating motion of piston body 2, distance rod 8 can be respectively provided with the two ends of piston body 2.
In addition, for ensureing the degree of accuracy measuring, first seal (in figure can be arranged between distance rod 2 and container 1
Not shown), to prevent gas from letting out.Preferably, first seal is packing box seal or expansion ring seale
Etc. dynamic sealing.
In order to ensure the operation stability of piston body 2, distance rod 8 is connected to the center of piston body 2.Thus,
Distance rod 8 be applied to the power of piston body 2 in peripheral direction than more uniform it is ensured that the operation of piston body 2 is steady
Qualitative.Meanwhile, the area that distance rod 8 also to be ensured is applied on piston body 2 is sufficiently large, to prevent piston body
Power on 2 is excessively concentrated, and piston body 2 is caused damage.Thus, the area of section of distance rod 8 is by holding
It is gradually reduced on outer direction in device 1.By this arrangement ensure that the contact of distance rod 8 and piston body 2
Area.Simultaneously as conduction element 3 (hereinafter will be described in detail), thrust are additionally provided with piston body 2
Bar 8 can not affect the setting of conduction element 3.Thus, the contact area of piston body 2 and distance rod 8 and piston
The ratio of the area of section of body 2 is 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
There is conduction element body 10, conduction element body 10 can pass through installation through-hole 9.Conduction element body 10 is provided with
Longitudinal gas passage 11, and be provided with and gas passage 11 on the side wall at the second end of conduction element body 10
The gas orifice 12 of connection.When conduction element 3 vertically moves, gas orifice 12 can remove or move into installation through-hole 9,
And the first space 6 is connected with second space 7 selectivity.
In the container 1, the pressure that the gas in the first space 6 acts on conduction element body 10 is more than second
When gas in space 7 acts on the pressure on conduction element body 10, under power effect, conduction element 3 is by the
One end is moved so that gas orifice 12 is stretched out by installation through-hole 9 to the second extreme direction, thus connection
First space 6 and second space 7.Then gas can pass through gas passage 11 and gas orifice by the first space 6
12 flow to second space 7.On the contrary, when the suffered pressure in the first space 6 of conduction element body 10 is little
When suffered pressure in second space 7, pressure promotes conduction element 3 to be moved from the second end to the first extreme direction,
Gas orifice 12 is entered in installation through-hole 9, and with the cooperation of the inwall of installation through-hole 9, thus having ended the
One space 6 connects with second space 7.Gas is now also prevented to be flowed from the second end to the first extreme direction.
This sampling instrument 100 structure is simple, relies on the pressure differential of conduction element 3 both sides, promotion conduction element 3 movement just can be real
The one-way conduction of existing first space 6 and second space 7 and cut-off.
In order to ensure sampling instrument 100 sensitivity so as in the presence of very little pressure differential also can responsive movement,
Confficient of static friction between conduction element body 10 and installation through-hole 9 is not more than 0.05.For example, conduction element body
Confficient of static friction between 10 and installation through-hole 9 can be 0.03.
Conduction element body 10 it is so structured that rotary body, accordingly, the shape of installation through-hole 9 and conduction element
Body 10 form fit.According to the present invention, as shown in figure 3, conduction element body 10 it is so structured that its first
Hold as cylindric, and the second end is coniform, and, the area in the section at coniform place is from the second end to the
It is gradually reduced on one extreme direction.4th sealing member can be set between conduction element body 10 and installation through-hole 9
13, and the 4th sealing member 13 is located at the second end of fluid bore 12.Preferably, the 4th sealing member 13 is o
Type sealing ring.During conduction element body 10 is from first end to the second end motion, the conduction element of this shape
Second end of body 10 lengthwise movement of without prejudice to conduction element body 10.Simultaneously as conduction element body 10
First end componental movement to installation through-hole 9 conical section be gap cooperation, thus this arrangement reducing
Frictional force between conduction element body 10 and installation through-hole 9, improves the operation sensitivity of conduction element body 10.
During conduction element body 10 is from the second end to the first end motion, the second end of conduction element body 10 is played
For the spacing effect of conduction element body 10.Meanwhile, when conduction element body 10 motion puts in place, the 4th sealing
Part 13 works to prevent gas from being revealed from the second end of piston body 2 to the first end of piston body 2.Conduction element
Second end of body 10 does not protrude from the second end face of installation through-hole 9.In the present invention, the second end and the
One end residing for two spaces 7 is identical, and first end is identical with the one end residing for the first space 6.
According to the present invention, conduction element 3 also includes the second cover plate 14 being arranged on the second end of conduction element body 10,
Be can be seen that by Fig. 4.Accordingly, the second end in piston body 2 arranges the first holding tank 15, the first appearance
Groove 15 of receiving is used for accommodating the second cover plate 14.For making processing simple it is preferable that the second cover plate 14 is configured to horizontal stroke
Plate to setting.Can be for example one of circular, square, polygon and ellipse etc..Accordingly,
The shape of the first holding tank 15 is adapted with the second cover plate 14.
In addition, arranging second seal 16 between the bottom land of the second cover plate 14 and the first holding tank 15.?
When one space 6 and second space 7 are in cut-off state, the bottom land of the second cover plate 14 and the first holding tank 15 it
Between sealed cooperation, to realize the sealing in the first space 6 and second space 7.
Groove 17 is set at the bottom land of the first holding tank 15.Wherein, the effective diameter of groove 17 is less than first
The effective diameter of holding tank 15.Conduction element body 10 to the second extreme direction mobile when, gas orifice 12 can be with
Groove 17 connects, in order to the flowing of gas.
Preferably, second seal 16 is arranged in the first end face of the second cover plate 14, and second seal 16
Diametrically can extend at groove 17.Second cover plate 14 and the first holding tank 15 are enhanced by this set
Between sealing.It is further preferred that second seal 16 is elastic rubber sealing ring.Certainly, second is close
Sealing 16 can also be arranged on the bottom land of the first holding tank 15, also enables the second cover plate 14 and the first appearance
The sealing received between groove 15.
The second end face of the second cover plate 14 does not project the first holding tank 15.It is, conduction element body 10 to
Second extreme direction moves, and when gas orifice 12 is connected with second space 7, the second end face of the second cover plate 14 is still
Be in the first holding tank 15, rather than axially projecting in the first holding tank 15.Thus, even piston body
2 with the contact internal walls of container 1 in the case of, the second cover plate 14 also not contact internal walls with container 1.At this
Under kind of state, the inwall of container 1 can not act on the second cover plate 14, has no effect on the first space 6 and the
The conducting in two spaces 7.
In the case that the second end of conduction element 3 is provided with the second cover plate 14, conduction element body 10 can be arranged
For cylindric.This structure is simple, and can meet use demand.But, conduction element body 10 can also set
Being set to above-mentioned first end is cylindric and the second end is cone shape structure although the conduction element 3 of this structure
Slightly complicated, but its frictional force is little, and also enable dual-seal.
Conduction element 3 also includes the first cover plate 18 being arranged on the first end of conduction element body 10.First cover plate 18
It is configured to the plate of radial direction, and can coordinate with the first end face contact of piston body 2.In addition, the first cover plate 18
The gas access 19 that upper setting is connected with gas passage 11.In conduction element body 10 from first end to the second end side
To in moving process, the first cover plate 18 serves as the spacing effect of conduction element 3.Meanwhile, the first cover plate 18
The pressure that in the first space 6, gas is brought can also be accepted, to drive conduction element body 10.
The face area at the second end of conduction element 3 is more than the face area of first end.To have the second cover plate 14
As a example the conduction element 3 of the first cover plate 18.I.e. the area of section of the second cover plate 14 is more than the first cover plate 18
Area of section.Preferably, the area of section of the second cover plate 14 and the area of section ratio of the first cover plate 18 are
2:1-5:1.For example, the area of section of the area of section of the second cover plate 14 and the first cover plate 18 is than for 3:1.Pass through
This set, the second cover plate 14 can respond rapidly in gas pressure change, and moves to the first extreme direction.By
This, improve the speed that the second cover plate 14 reacts on gas pressure change, thus improve certainty of measurement.
It should be noted that, the conduction element 3 of the present invention is not limited to there is the first cover plate 18.And in order to limit
Conduction element 3 can also be configured to other structures form by the longitudinal stroke of conduction element body 10.For example, may be used
So that longitudinal stroke groove (not shown) to be arranged on the inwall of installation through-hole 9, and in conduction element body 10
Outer wall on setting can extend to projection in stroke groove, in conduction element body 10 along installation through-hole 9 longitudinally
The longitudinal direction of conduction element body 10 in motor process, is limited by the cooperation of the raised two ends cell wall with stroke groove
Stroke.Again for example, it is also possible to be provided for limiting the locating part of the second cover plate 14 at the second end of piston body 2
(not shown).In order to not affect the flowing of gas, locating part is so structured that the end face with piston body 2
Shape identical network structure.During conduction element body 10 is to the second end motion, when conduction element body 10
The second end when running into locating part, the position of conduction element body 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
For the through hole generally laterally arranged.Preferably, gas orifice 12 can be multiple, and in conduction element body 10
It is evenly arranged on the wall of side.Increased the stationarity of gas flowing by this setup.And, have this
The conduction element 3 of structure is simple to manufacture, it is easy to accomplish.
According to the present invention, multiple conduction elements 3 can be arranged on piston body 2, and conduction element 3 is in piston body 2
Circumference on be uniformly distributed.
Further, in order to the quantization realizing the pressure to gas is adjusted, sampling instrument 100 also includes representing piston
The scale 20 of the position of body 2, as shown in Figure 1.This scale 20 can be arranged on the outer wall of container 1, and
And scale 20 will extend to one end of the propelling container 1 of distance rod 8, with the longitudinal direction by measuring distance rod 8
Position and judge the position of piston body 2.In order to optimize the profile of sampling instrument 100 it is preferable that scale 20 can
To be connected with container 1 by the mode of pull mode or folding.
Certainly, if container 1 is made of clear material, for example, politef etc., scale 20 can be straight
Connect on the wall being indicated in container 1.So can more intuitively see piston body 2 location, and not be used in
Serve as middle reference by distance rod 8.
Further, scale 20 can also be set directly on distance rod 8.Further, the scale of scale 20 is carved
Erosion is on the wall of distance rod 8.By this set it is easy to rapidly directly directly read from distance rod 8
The position vertically moving of piston body 2 or distance.
By the change in location of piston body 2, to obtain the change of the volume in the first space 6 and second space 7,
Thus calculating the pressure change of corresponding gas, this exactly indicates the purpose of scale 20.In order to faster
Calculate gas pressure intensity change, the scale of scale 20 can be from 0 to 1, every 0.01 sign one lattice.Set in scale 20
Put in the case of chamber wall, scale 20 successively decreases to the one end exporting 5 from one end of entrance 4.It is,
Scale " 0 " is in one end of outlet 5.And in the case that scale 20 is etched in distance rod 8, scale 20 from
One end of entrance 4 is incremented by one end of outlet 5.
For the ease of conveying gas, and the connection with source of the gas or sampling bottle, in one end of the entrance 4 of container 1
Inlet porting valve 21, to receive the gas from source of the gas.Meanwhile, in one end setting of the outlet 5 of container 1
Outlet valve 22, can connect with sampling bottle.It is easy to for connecting tube to be arranged on entrance valve by this set
21 or outlet valve 22 on, to realize transfer of gas.
In order to adapt to different sources of the gas and sampling bottle, sampling instrument 100 also includes multiple thering is different jointings
Regulation pipe (not shown).It is, one end of regulation pipe be configured to be connected to entrance valve 21 or
At outlet valve 22, and the other end has different jointings to adapt to different sources of the gas and sampling bottle.Pass through
This set, expands the range of sampling instrument 100, improves its versatility.
The structure of entrance valve 21 and outlet this protruding-type of valve 22 is so that entrance valve 21 or/and outlet
Valve 22, during transport or use, is easily deformed or even damages.Thus, can arrange in entrance valve 21
Guard member (not shown), also can arrange guard member certainly at outlet valve 22.Preferably, protect
Part is so structured that the shape of the profile being matched with container 1.For example, container 1 is cylindric, then guard member is just
Could be arranged to circular, it is connected with container 1, entrance valve 21 or outlet valve 22 are located at
Wherein.Meanwhile, there is the sampling instrument 100 of this structure, profile is neat, convenient for collecting and transport.In addition,
By guard member can also other parts at the two ends of container 1 for the protection setting, for example, hereinafter will refer to
Pressure gauge 23.
Preferably, guard member can threadedly be arranged on container 1.Can be very square by this set
Just screw guard member to realize mounting and dismounting, to produce to other attended operations or repair operation so as not to guard member
Raw space limits.
Certainly, guard member may be arranged as other structures form, for example, the hood configuration of only one end open.
It is connected with container at the opening of the guard member of this structure, to form protection chamber between guard member and container 1.
The guard member of this form only uses under the states such as transport, and during gas transmission connects and uses, needs will be protected
Guard disassembles from container 1.But, connect under use state in non-gas transmission, the guard member of this structure
Entrance valve 21 and outlet valve 22 are in airtight environment, except playing anti-colliding with and antisitic defect
Outside moreover it is possible to prevent foreign body from entering in entrance valve 21 and outlet valve 22, it is to avoid cause entrance valve 21
Blocking with outlet valve 22.
According to the present invention, inlet porting valve 24 between the inner chamber of entrance valve 21 and container 1, to realize holding
The connection of device 1 and source of the gas and cut-off.In the same manner, arrange between outlet valve 22 and the interior space of container 1
Outlet valve 25, to realize connection and the cut-off of container 1 and sampling bottle.
For the ease of being keeped in repair to the inside of container 1 and cleaning, container 1 is set to split-type structural.For example,
Container 1 includes container body (not shown) and the container cover (not shown) being connected with container body.
Preferably, container body and container cover are detachable connection.It is further preferred that be threaded connection or
Container cover is arranged on container body the modes such as clamping.It should be noted that in addition it is also necessary in container body and appearance
Between device lid, setting sealing member is to ensure the sealing effectiveness of the inner chamber of container 1.In some parts (such as piston body
2) when going wrong, and needing to change, said structure form, facilitate and container 1 is dismantled and installs.
In addition, in order to ensure can not vertically move in gas pressure lower piston body 2, and piston body 2 can only be
Artificial external force effect is lower to move, the confficient of static friction between the inwall of piston body 2 and container 1 0.5-1 it
Between, and lubricating oil is set between the inwall of piston body 2 and 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 can also be square body etc..Container 1, in addition to available politef is made, can also use rustless steel
Or the metal manufacture such as aluminium alloy.
Describe the using method of sampling instrument 100 with reference to Fig. 1-4 in detail.
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 little
Pressure in the suitable working range of sampling bottle is defined as low pressure.For example, the pressure of the suitable services of sampling bottle
Scope is about 0.6-15 MPa.Then the high pressure in the application is not less than 15 MPas, and the low pressure in the application is big
In atmospheric pressure and less than 0.6 MPa.
For high-pressure air source, first, control crank 26, makes piston body 2 move axially to one end of outlet 5.
Entrance valve 21 is connected with source of the gas, after opening inlet valve 24 and outlet valve 25, open source of the gas make natural
Gas is entered in the inner chamber of container 1 by entrance 4.Now, because the gas in the first space 6 acts on conducting
The pressure that pressure on part 3 is subject in second space 7 more than conduction element 3, it is, the of conduction element 3
The pressure of one end is more than the pressure at the second end, thus conduction element body 10 moves to the second end from first end, with
First space 6 is connected with second space 7.After gas passes through conduction element 3, by outlet 5 outflow.Make gas
From entrance 4 to outlet 5 circulation a period of time, that is, the flushing completing gas circuit.
After the completion of gas circuit is rinsed, after continuing ventilation a period of time, close outlet valve 25, and close inlet valve
24.Now the pressure of the gas in second space 7 is p1.If it is desire to obtaining the gas that pressure is p2, change
Calculate the value than p1 for the p2.Control crank 26, makes piston body 2 axially move to one end of entrance 4, and moves to
Scale is the position of p2/p1.Because now conduction element 3 is on the shape of the first space 6 and second space 7
State, therefore, piston body 2 can move to one end of entrance 4 in the axial direction of container 1.Disconnect entrance valve 21
Connection with source of the gas.Open inlet valve 24, so that the gas in the first space 6 is distributed by entrance 4.This
When, because the gas in the first space 6 is to external diffusion, then the air pressure reduction in the first space 6, then in conducting
Pressure differential in the two ends of part 3, and this pressure differential promotes conduction element body 10 from the second end to the first extreme direction
Mobile, to end the connection in the first space 6 and second space 7.Treat that the gas in the first space 6 gives out it
Afterwards, operation distance rod 8 makes piston body 2 move to the first extreme direction.Now, the volume of second space 7 increases,
The drop of pressure of the gas being then located therein.After piston body 2 moves to one end of entrance 4, valve will be exported
22 are connected to sampling bottle.Now, sampling bottle can receive the gas that pressure is p2.
For low-pressure gas source, first, control crank 26, makes piston body 2 move axially to one end of entrance 4.
Entrance valve 21 is connected with source of the gas, after opening inlet valve 24 and outlet valve 25, open source of the gas make natural
Gas is entered in the inner chamber of container 1 by entrance 4.Now, the pressure of the first end of conduction element 3 is more than the second end
Pressure, thus conduction element body 10 moves to the second end from first end, will the first space 6 and second empty
Between 7 connection.After gas passes through conduction element 3, by outlet 5 outflow.Make gas from entrance 4 to outlet 5 circulation
For a period of time, that is, complete the flushing process of gas circuit.
After the completion of gas circuit is rinsed, after continuing ventilation a period of time, close outlet valve 25.Now container 1
The pressure of the gas in inner chamber is p3.If it is desire to obtaining the gas that pressure is p4, convert the value than p4 for the p3.
Control crank 26, makes piston body 2 axially move to one end of outlet 5, and moves to the position that scale is p3/p4
Put.During mobile piston body 2, the gas in second space 7 is compressed, and its pressure raises, by
Gas pressure in this second space 7 suffered by conduction element 3 is greater than the gas in the first space 6 being subject to
Pressure, in the presence of pressure differential, conduction element body 10 moves to the first extreme direction, so that fluid bore 12 is extended
To among installation through-hole 9 to end connecting of the first space 6 and second space 7.Appearance due to second space 7
Long-pending diminish, be in gas therein pressurized and so that its pressure is raised.Finally, outlet valve 22 is connected to and adopts
Sample bottle.Now, sampling bottle can receive the gas that pressure is p4.
In the application, direction from left to right or from right to left in term " longitudinal " and Fig. 1, and term is " horizontal
To " it is perpendicular to the direction of " longitudinal ".Term " first end " is identical with one end of entrance 4, and term " the
Two ends " are contrary with " first end " and identical with one end of outlet 5.
The foregoing is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, appoint
What those skilled in the art, in technical scope disclosed by the invention, can easily be changed or change, and
This being altered or varied all should be included within the scope of the present invention.Therefore, protection scope of the present invention should
It is defined by the protection domain of claims.
Claims (10)
1. a kind of sampling instrument is it is characterised in that include:
One end is provided with entrance and the other end is provided with the container of outlet,
In the above-described container and can be along the piston body of described container axially-movable, described piston physical ability will be described for setting
Container is divided into the first space and second space,
It is arranged on the conduction element on described piston body, described conduction element can move along institute's piston body to realize described
The connection of one space and described second space and cut-off,
It is arranged on the entrance valve of the porch of described container, and
It is arranged on the outlet valve in the exit of described container.
2. sampling instrument according to claim 1 is it is characterised in that in the arrival end of described container and go out
At least end at mouth end is provided with guard member.
3. sampling instrument according to claim 2 is it is characterised in that described guard member is configured to be matched with
The ring-type of the shape of described container.
4. sampling instrument according to claim 2 is it is characterised in that described guard member is configured to be matched with
The shape of described container hood-like.
5. the sampling instrument according to any one of claim 2 to 4 is it is characterised in that described guard member
With described container detachable connection.
6. sampling instrument according to claim 1 and 2 is it is characterised in that described container includes container master
Body and the container cover with described container body detachable connection.
7. sampling instrument according to claim 1 and 2 is it is characterised in that described conduction element has can wear
Cross the conduction element body of the installation through-hole being arranged on described piston body, described conduction element body is provided with energy
The fluid passage being connected with described first space, is provided with and institute on the second side wall of described conduction element body
State the fluid bore of fluid passage connection, when described conduction element vertically moves, described fluid bore can remove or move into
Described installation through-hole and connect with described second space selectivity.
8. sampling instrument according to claim 7 is it is characterised in that described conduction element also includes being arranged on
Second cover plate at the second end of described conduction element body, and be provided for accommodating institute at the second end of described piston body
State the first holding tank of the second cover plate, setting the between the bottom land of described second cover plate and described first holding tank
Two sealing members.
9. sampling instrument according to claim 1 and 2 is it is characterised in that also including distance rod, described
Described container is extended in one end of distance rod, and the other end of described distance rod is connected with described piston body.
10. sampling instrument according to claim 1 is it is characterised in that at described entrance valve and described
It is provided with valve at outlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418728.0A CN106353146B (en) | 2015-07-16 | 2015-07-16 | Sampling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418728.0A CN106353146B (en) | 2015-07-16 | 2015-07-16 | Sampling instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106353146A true CN106353146A (en) | 2017-01-25 |
| CN106353146B CN106353146B (en) | 2020-02-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510418728.0A Active CN106353146B (en) | 2015-07-16 | 2015-07-16 | Sampling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106353146B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206606U (en) * | 1987-04-21 | 1988-01-06 | 胡煜 | High efficiency aerated valve |
| CN87209127U (en) * | 1987-06-11 | 1988-02-17 | 中国科学院海洋研究所技术开发公司 | Safety gravity piston sampler |
| JP2001004054A (en) * | 1999-06-23 | 2001-01-09 | Kasahara Motors:Kk | Air valve for tire |
| CN203705228U (en) * | 2014-03-07 | 2014-07-09 | 国家电网公司 | Sulfur hexafluoride gas collecting device |
| CN204165790U (en) * | 2014-10-29 | 2015-02-18 | 中国石油化工股份有限公司 | A kind of sampling thief |
| 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 |
-
2015
- 2015-07-16 CN CN201510418728.0A patent/CN106353146B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206606U (en) * | 1987-04-21 | 1988-01-06 | 胡煜 | High efficiency aerated valve |
| CN87209127U (en) * | 1987-06-11 | 1988-02-17 | 中国科学院海洋研究所技术开发公司 | Safety gravity piston sampler |
| JP2001004054A (en) * | 1999-06-23 | 2001-01-09 | Kasahara Motors:Kk | Air valve for tire |
| CN203705228U (en) * | 2014-03-07 | 2014-07-09 | 国家电网公司 | Sulfur hexafluoride gas collecting device |
| CN204165790U (en) * | 2014-10-29 | 2015-02-18 | 中国石油化工股份有限公司 | A kind of sampling thief |
| 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 |
|---|---|
| CN106353146B (en) | 2020-02-14 |
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