CN206656886U - Realize the sampler of the anti-shearing sampling of Double-way sucking isothermal with pressure - Google Patents
Realize the sampler of the anti-shearing sampling of Double-way sucking isothermal with pressure Download PDFInfo
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- CN206656886U CN206656886U CN201720413727.1U CN201720413727U CN206656886U CN 206656886 U CN206656886 U CN 206656886U CN 201720413727 U CN201720413727 U CN 201720413727U CN 206656886 U CN206656886 U CN 206656886U
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Abstract
Crude oil pipeline conveying sample devices technical field is the utility model is related to, more particularly to a kind of sampler for realizing the anti-shearing sampling of Double-way sucking isothermal with pressure.In the sampler for realizing the anti-shearing sampling of isothermal with pressure, piston is arranged in cavity, and two chambers will be divided into cavity, and two chambers difference is to be opened/closed to be connected with crude oil pipeline；Piston repeatedly moves back and forth in cavity, drives the fluid in crude oil pipeline alternately to pass in and out two chambers, until the hydraulic pressure and liquid temperature in each chamber are equal with the hydraulic pressure in crude oil pipeline and liquid temperature respectively.Above-mentioned sampler and method can realize with pressure, isothermal and anti-shearing sampling simultaneously, and with from release, do not produce the effect of waste oil, the crude oil in chamber can be both taken out for carrying out crude oil test, both reduce workload, and economic and environment-friendly.
Description
Technical field
Crude oil pipeline conveying sample devices technical field is the utility model is related to, more particularly to one kind realizes Double-way sucking band
Press the sampler of the anti-shearing sampling of isothermal.
Background technology
Addition pour-point depressant modification is one of major technique of crude oil safety economy conveying.But the modified effect of crude oil
Fruit especially its stability can't fully meet production requirement.The rheological characteristic of crude oil through pour-point depressant modification can be by
The influence of temperature change and shear action and deteriorate, deal with the safe operation that may injure pipeline improperly.Therefore need timely
Oil sample is obtained from pipeline and carries out crude oil fluidity test, oil sample must not be made to be subjected to any temperature change and shearing in sampling process
Effect, the flowing property of crude oil in pipe can not truly be reflected by otherwise drawing oil sample.
When being sampled from crude oil pipeline, if sampler temperature and crude oil temperature in pipeline are inconsistent, into sampler
Oil sample temperature will change, no matter temperature is raised and lowered can have an impact to drawn oil sample mobility.From pipe with pressure
Road samples, if the pressure in sampler is different from the pressure in pipeline, the effect of pressure difference, oil sample flows into inevitable during sampler
It can be sheared.
Pressure difference inside and outside pipeline generally in sampling be present and do not reach the effect for eliminating shearing in current existing sampler；In order to
Eliminating pressure difference influences, and some samplers make crude oil pass through circulating pump in sampling process, but adds additional the pump excessively of oil sample
Shearing；Further, in order to prevent the influence caused by temperature change in sampling process, emptied again by being repeatedly first full of at present
Mode preheat (cold) sampler, but can not fundamentally accomplish that isothermal samples using the sampler, particularly be put in stock layout
The cavity emptied in null process can not touch oil sample in time, and (cold) part crossed of preheating originally again can be affected by environment and warm
Degree changes, and does not reach the purpose that sampler is preheated to oil temperature in (cold) to pipe, and the oil sample discharged every time can only be used as waste oil
Processing, that is, add workload, also uneconomical, environmentally friendly.In addition, sampler structure design is there is also defect, under sampler piston
Negative pressure can be produced in the cavity emptied during row oil extraction, not only causes piston to continue to move to become difficult, and easily cause piston
Seal damage between sampler inwall, makes sampler fail.Above crude oil pipeline sampler has simply partially removed sampling
Influence factor, does not reach the requirement of the anti-shearing sampling of isothermal with pressure, and the oil sample of taking-up can not truly reflect the reality of crude oil in pipe
Border flow behavior.
Utility model content
(1) technical problems to be solved
The technical problems to be solved in the utility model be to provide it is a kind of realize Double-way sucking isothermal with pressure it is anti-shearing sampling
Sampler, sampling, isothermal sampling and anti-shearing sampling with pressure can be realized, and waste oil is not produced in sampling.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides a kind of sampling for realizing the anti-shearing sampling of isothermal with pressure
Device, including cavity and piston, the piston are arranged in cavity, and two chambers, two chambers will be divided into the cavity
Room difference is to be opened/closed to be connected with crude oil pipeline；The piston repeatedly moves back and forth in cavity, drives in the crude oil pipeline
Fluid alternately pass in and out two chambers, until each chamber in hydraulic pressure and liquid temperature respectively with the crude oil pipeline
Hydraulic pressure and liquid temperature it is equal.
Further, the hydraulic pressure in each chamber and liquid temperature respectively with the hydraulic pressure and liquid temperature in the crude oil pipeline
It is equal, and any chamber and crude oil pipeline disconnect and when another is connected with crude oil pipeline, with the current location of piston
As position with pressure, pressure relieving position, the pressure relieving position and position with pressure are set in the chamber connected with the crude oil pipeline
Between it is spaced apart；The piston is stood after being moved to pressure relieving position from position with pressure, so as to break with the crude oil pipeline
The release in the quiescent state of the hydraulic pressure in chamber opened.
Further, in addition to piston rod and handwheel, the piston are connected by piston rod with handwheel, and the handwheel passes through
Rotational band piston bar moves, to drive the piston to be moved in cavity.
Further, chamber lid is installed, the chamber lid is provided with pilot hole, and the pilot hole is used for work on the cavity
The reciprocating movement sealing of stopper rod be oriented to.
Further, two chambers are connected by the first communicating pipe and the second communicating pipe with crude oil pipeline respectively.
Further, the first control valve and the second control are separately installed with first communicating pipe and the second communicating pipe
Valve.
Further, first communicating pipe is provided with pressure gauge, and the pressure gauge is arranged at the first control valve and cavity
Between.
Further, second communicating pipe is provided with pressure gauge, and the pressure gauge is arranged at the second control valve and cavity
Between.
Further, it is provided with air-intaking exhaust valve on the cavity.
Further, it is provided with sampling valve on the cavity.
(3) beneficial effect
Above-mentioned technical proposal of the present utility model has the advantages that：It is of the present utility model to realize that isothermal with pressure is prevented cutting
Cut in the sampler of sample, piston is arranged in cavity, and two chambers will be divided into cavity, and two chambers difference is to be opened/closed
Connected with crude oil pipeline；Piston repeatedly moves back and forth in cavity, drives the fluid in crude oil pipeline alternately to pass in and out two chambers,
Until the hydraulic pressure and liquid temperature in each chamber are equal with the hydraulic pressure in crude oil pipeline and liquid temperature respectively.The sampler and method can
Sampling, isothermal sampling and anti-shearing sampling with pressure are realized simultaneously, and sampling effect factor can be completely eliminated during sampling, reach
The requirement of the anti-shearing sampling of isothermal with pressure, the oil sample of taking-up can truly reflect the actual flow behavior of crude oil in pipe；In addition, this takes
Sample utensil has from release, does not produce the effect of waste oil, and the crude oil in chamber can be both taken out for carrying out crude oil test, both reduced
Workload, but it is economic and environment-friendly.
Brief description of the drawings
Fig. 1 is the structural representation of the sampler for realizing the anti-shearing sampling of isothermal with pressure of the utility model embodiment one；
Fig. 2 is the structural representation of the sampler for realizing the anti-shearing sampling of isothermal with pressure of the utility model embodiment two.
Wherein, 1, chamber lid；2nd, air-intaking exhaust valve；3rd, piston；4th, cavity；5th, sampling valve；6th, the first control valve；7th, first connects
Siphunculus；8th, crude oil pipeline；9th, the second control valve；10th, the second communicating pipe；11st, pressure gauge；12nd, chamber；13rd, piston rod；14th, hand
Wheel.
Embodiment
Embodiment of the present utility model is described in further detail with reference to the accompanying drawings and examples.Following examples
For illustrating the utility model, but can not be used for limiting the scope of the utility model.
In description of the present utility model, unless otherwise indicated, " multiple " are meant that two or more.Term
The orientation or position relationship of the instruction such as " on ", " under ", "left", "right", " interior ", " outer ", " front ", " rear " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply and be signified
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
New limitation.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint are relative
Importance, the limitation to laying order can not be interpreted as.
Embodiment one
As shown in figure 1, the sampler for realizing the anti-shearing sampling of isothermal with pressure that the present embodiment one provides, the sampler can
Sampling, isothermal sampling and anti-shearing sampling with pressure are realized simultaneously, and sampling effect factor can be completely eliminated during sampling, reach
The requirement of the anti-shearing sampling of isothermal with pressure, the oil sample of taking-up can truly reflect the actual flow behavior of crude oil in pipe；In addition, this takes
Sample utensil has from release, does not produce the effect of waste oil, and the crude oil in chamber 12 can be both taken out for carrying out crude oil test, both
Workload is reduced, but it is economic and environment-friendly.
Specifically, in sampler described in the present embodiment one, piston 3 is arranged in cavity 4, will be divided into two in cavity 4
Individual chamber 12, two chambers 12 distinguish it is to be opened/closed connected with crude oil pipeline, i.e. on off operating mode between cavity 4 and crude oil pipeline
It is controllable；When normally taking liquid, control piston 3 repeatedly moves back and forth in cavity 4, by the alternately suction one of the fluid in crude oil pipeline
In individual chamber 12, and the fluid in another chamber 12 is drained back into crude oil pipeline again, so as to utilize the motion band of piston 3
Fluid in dynamic crude oil pipeline alternately disengaging two chambers 12, until hydraulic pressure and liquid temperature in each chamber 12 respectively with crude oil pipe
Hydraulic pressure and liquid temperature in road is equal, so that the fluid equipressure isothermal in each chamber 12 in cavity 4, and and crude oil pipeline
Interior fluid equipressure isothermal, realize isobaric, the isothermal sampling out of crude oil pipeline；Meanwhile lived with slow rational speed control
The motion of plug 3 so that fluid is slow enough by flowing velocity during crude oil pipeline disengaging sampler, so as in sample introduction and sampling
The influence of shearing is avoided, realizes anti-shearing sampling.
In order to guarantee to move with slow rational speed control piston 3, preferably piston 3 passes through piston rod 13 and hand
The connection of wheel 14, handwheel 14 are moved by rotational band piston bar 13, are moved with band piston 3 in cavity 4；For the ease of fixation
Piston rod 13 and handwheel 14, chamber lid 1 is installed on cavity 4, chamber lid 1 is provided with pilot hole, and pilot hole is used for piston rod 13
Reciprocating movement sealing be oriented to, specifically, can add sealing mechanism between pilot hole and piston rod 13, such as seal
Pad, sealed bearings etc.；Piston rod 13 is arranged in pilot hole, so that piston rod 13 and 3 vertical setting of piston, when handwheel 14 rotates
When, axial movement of the piston rod 13 along pilot hole, so as to be moved with piston 3 to one end of cavity 4, similarly rotate backward handwheel
With another end motion of the piston 3 to cavity 4 when 14.Due to being driven using handwheel 14, the mobile comparison of piston 3 is slow, speed
It is controllable very slow, so as to ensure that the fluid flowing velocity in two chambers 12 is slowly controllable.
For the ease of the on off operating mode between control two chambers 12 and crude oil pipeline, two chambers 12 pass through first respectively
Communicating pipe 10 communicating pipe 7 and second is connected with crude oil pipeline, and first is separately installed with the first communicating pipe 7 and the second communicating pipe 10
The control valve 9 of control valve 6 and second.
For the ease of the position of piston 3 is placed in into original state (one end that piston 3 is moved to cavity 4), preferably cavity 4
On be provided with air-intaking exhaust valve 2, air-intaking exhaust valve 2 is preferably anti-negative pressure valve, chamber 12 and crude oil pipeline it is separated after, be
Prevent from producing negative pressure in chamber 12 or vacuum is stepped up, the valve can automatically turn on, and destroy vacuum effect, make the chamber 12 will not
Phenomena such as flat, crack is produced, with protection equipment safety；When piston 3 moves to one end, it is reverse the moving direction of piston 3 will to be located at
Chamber 12 and crude oil pipeline it is separated, and open air-intaking exhaust valve 2, gas is entered the chamber 12, to ensure piston 3
Normal movement.
For the ease of taking out the crude oil after release out of sampler, sampling valve 5 is provided with cavity 4, when each chamber 12
Interior hydraulic pressure and liquid temperature are equal with the hydraulic pressure in crude oil pipeline and liquid temperature respectively, and any chamber 12 and crude oil pipeline disconnect,
And another is with crude oil pipeline when connecting, using the current location of piston 3 as position with pressure, in the chamber connected with crude oil pipeline
Pressure relieving position is set in 12, and spaced apart between pressure relieving position and position with pressure, piston 3 is moved to release from position with pressure
Stood behind position, so that the release in the quiescent state of the hydraulic pressure in chamber 12, waits the fluid in the chamber 12 disconnected with crude oil pipeline 8
Hydraulic pressure unload and be depressed into atmospheric pressure after, open sampling valve 5, you can safety takes out the crude oil after release from chamber 12；In other words,
When the hydraulic pressure and liquid temperature of the fluid of the inner sealing of two chambers 12 are equal with the hydraulic oil temperature of the crude oil fluid in crude oil pipeline 8
When, then can be considered that fluid samples process to sampler from crude oil pipeline 8 and completed, now by one in two chambers 12 with
Crude oil pipeline 8 connects, another keep with the off-state of crude oil pipeline 8, then by piston 3 from the position with pressure being currently located
Put, moved to the direction of chamber 12 connected with crude oil pipeline 8, because the chamber 12 at the mobile rear of piston 3 is kept and crude oil pipe
Road 8 disconnects, then expands the internal volume of the chamber 12 disconnected with crude oil pipeline 8 by the motion of piston 3, in follow-up standing process
In cause the chamber 12 in fluid voluntarily produce release effect.
For the ease of monitoring the oil liquid pressure in chamber 12 to be sampled, preferably in the chamber disconnected with crude oil pipeline 8
Set up pressure gauge 11 between 12 and crude oil pipeline 8, in the present embodiment one, connected in the first control valve 6 with chamber 12 first
Pressure gauge 11 is set on communicating pipe 7, in order to monitor original oil liquid pressure state in chamber 12, so as to judge the self-unloading of oil sample
Pressure situation.
The preferred cavity 4 of the sampler is vertically arranged, and the motion of piston 3 is by the inside division of cavity 4 into upper and lower two chambers
12, the chamber of bottom by first communicating pipe 7 it is to be opened/closed connected with crude oil pipeline, the chamber on top passed through for the second communicating pipe 10
It is to be opened/closed to be connected with crude oil pipeline.It is preferred that the first communicating pipe 7 and the second communicating pipe 10 are connected to the upstream of crude oil pipeline
Side and downstream, with ensure fluid when flowing into cavity 4 it is more smoothly, still, second communicating pipe 10 and the connectivity part of crude oil pipeline
First communicating pipe 7 and the upstream side or downstream of the connectivity part of crude oil pipeline can also be arranged on, the oil in crude oil pipeline
Liquid stream does not influence to for sampling process；Chamber lid 1 is installed at the top of cavity 4, piston rod 13 is axially arranged along cavity 4,
Its one end is connected with piston 3, and the other end is connected vertically through chamber lid 1 with handwheel 14；The upper and lower ends of cavity 4 set air inlet respectively
Air bleeding valve 2 and sampling valve 5.
The sampler operation principle is as follows：By opening the first control valve 6 or the second control valve 9, enter oil stream corresponding
Chamber 12 in, rotation hand wheel 14 makes piston 3 move reciprocatingly, and no matter piston 3 moves to which direction, its move front and after
The chamber 12 of side is respectively at oil extraction and oil suction state so that a chamber 12 another chamber 12 row while fresh oil is sucked
Go out old oil.Moved back and forth for more than 3 times by piston, crude oil in sampler two way alternate suction pipeline so that sampler temperature with
Oil liquid temperature in crude oil pipeline is identical, reaches the purpose of isothermal sampling, and during each oil extraction, the oil of discharge is all
Pipeline is returned to, without being discharged to extraneous formation waste oil.Because two chambers 12 are disposed in parallel in cavity 4, then it can be considered as cavity 4
Both ends communicated with crude oil pipeline so that it is completely isobaric with crude oil pipeline in chamber 12, by controlling the speed of rotation hand wheel 14
Make during piston 3 is moved to the other end by one end of cavity 4, the fluid in crude oil pipeline slowly enters a chamber 12
Interior, then the process is entirely isobaric sample introduction.In addition, hydraulic pressure first static release in chamber 12 is made by self-unloading press operation during sampling
Sample after to atmospheric pressure, so as to avoid the influence of shearing in the whole process of sample introduction and sampling, finally realize with pressure without waste oil again
Isothermal samples from the anti-shearing of release.
Sampler maximum working pressure described in the present embodiment one is preferably 6MPa, and maximum operating temperature is preferably 70 DEG C,
The diameter of cavity 4 is preferably that Φ 80, length are preferably 160mm, and the diameter of piston 3 is preferably that Φ 70, thickness are preferably 40mm, sampler
It is 500mL that oil sample, which can once be accommodated, and the caliber of the first communicating pipe 7 and the second communicating pipe 10 use DN32, sampling valve 5 and cavity
The caliber of the connecting line between connecting line and air-intaking exhaust valve 2 and cavity 4 between 4 uses DN15.
Embodiment two
The structure and one basic phase of embodiment of the sampler for realizing the anti-shearing sampling of isothermal with pressure described in the present embodiment two
Together, something in common repeats no more, and difference is：As shown in Fig. 2 in sampler described in the present embodiment two, cavity 4 is horizontal
It is horizontal, piston 3 the interior edge cavity 4 of cavity 4 axial bilateral reciprocation, so as to by the inner sealing of cavity 4 be divided into left and right simultaneously
The two chambers 12 of row, two chambers 12 distinguish it is to be opened/closed connected with crude oil pipeline, by one in 4 or so two ends of cavity
Individual end-enclosed, another end installation chamber lid 1, axial direction of the piston rod 13 along cavity 4 are horizontally disposed with, and its one end connects with piston 3
Connect, the other end is connected through chamber lid 1 with handwheel 14, and perpendicular with chamber lid 1；The left and right ends of cavity 4 set air inlet to arrange respectively
Air valve 2 and sampling valve 5, it can equally be realized according to the identical operation principle of embodiment one, the structure setting of the embodiment two
Double-way sucking isothermal with pressure is from the anti-shearing of release without waste oil sampling process.
Embodiment three
Based on the sampler described in embodiment one or embodiment two, the present embodiment two proposes a kind of crude oil sampling method,
This method comprises the following steps：
Sampling procedure：The piston 3 of sampler repeatedly moves back and forth in cavity 4, drives the fluid alternating in crude oil pipeline
Two chambers 12 are passed in and out, until the hydraulic pressure and liquid temperature in each chamber 12 are equal with the hydraulic pressure in crude oil pipeline and liquid temperature respectively.
From release step：Hydraulic pressure and liquid temperature in each chamber 12 respectively with the hydraulic pressure and liquid temperature phase in crude oil pipeline
Deng, and any chamber 12 is with when crude oil pipeline is disconnected and another is connected with crude oil pipeline, piston 3 is moved from position with pressure
Stood after moving to pressure relieving position, so that the release in the quiescent state of the hydraulic pressure in chamber 12.
This method can realize sampling, isothermal sampling and anti-shearing sampling with pressure simultaneously, can be completely eliminated during sampling
Sampling effect factor, reaches the requirement of the anti-shearing sampling of isothermal with pressure, and the oil sample of taking-up can truly reflect the reality of crude oil in pipe
Flow behavior；In addition, the sampler has self-unloading pressure, do not produce the effect of waste oil, the crude oil in chamber 12 can both take out use
In carrying out crude oil test, workload is both reduced, and economic and environment-friendly.
Example IV
The present embodiment four is with detailed operating process to the sampler and embodiment described in embodiment one or embodiment two
Sampling method described in three is described.Specifically, this method comprises the following steps：
S1, initialization step：The position of piston 3 is placed in original state, the original state need ensure the first control valve 6,
Second control valve 9, air-intaking exhaust valve 2 and sampling valve 5 are in closed mode, and piston 3 is located at bottom in cavity 4.
S2, sampling procedure, the sampling procedure further comprise following steps：
S21, pre- sampling procedure：The first control valve 6 and air-intaking exhaust valve 2 are separately turned on first, and quick rotation hand wheel 14 makes
Piston 3 is moved up, and the air in the chamber 12 in the movement of piston 3 front is constantly discharged to outside cavity 4 by air-intaking exhaust valve 2,
At the same time the crude oil fluid in crude oil pipeline is moved in the chamber 12 at rear through the sucker 3 of the first communicating pipe 7, i.e., in piston
3 when being moved up, and the gas in the chamber on top is discharged by air-intaking exhaust valve 2, and is sucked in the chamber of bottom from crude oil pipeline
And it is full of fluid；When being moved to the top of cavity 4 with piston 3, stop the rotation handwheel 14, and exhaust terminates, the bottom of piston 3
Chamber is full of by crude oil.
S22, sampling processing step：After completing pre- sampling procedure, air-intaking exhaust valve 2 is closed, opens the second control valve 9, instead
The quick rotation hand wheel 14 in direction, moves down piston 3, now crude oil out of crude oil pipeline through the sucker of the second communicating pipe 10
3 move in the chamber 12 at rears, i.e. the chamber on top, and the crude oil in the chamber 12 in the at the same time movement of piston 3 front is through first
Communicating pipe 7 is discharged into crude oil pipeline, realizes that a chamber 12 has a fresh oil suction, while another chamber 12 has old oil discharge, inhale with
Two-way simultaneous progress is come, after piston 3 is moved to 4 bottom of cavity, the quick rotation hand wheel 14 of opposite direction, starts new immediately
Two-way fast sucking, discharging process.Sampler is through repeated multiple times former by the first communicating pipe 7 and the two way alternate suction of the second communicating pipe 10
After crude oil fluid in oil-piping, the oil liquid temperature in upper and lower two chambers 12 is equal, and with the fluid temperature in crude oil pipeline
Degree is consistent, reaches the condition of isothermal sample introduction, and because two chambers 12 are inside and outside without gas connection, then the fluid in two chambers 12
Pressure is equal, and consistent with the oil liquid pressure in crude oil pipeline, realizes the isobaric sampling into sampler out of crude oil pipeline.
S3, anti-shearing sampling：After completing above-mentioned sampling procedure, slow rotation hand wheel 14, move up piston 3, it is former
Fluid in oil-piping slowly enters the chamber of bottom through the first communicating pipe 7, to avoid the shear inference that quick flowing is formed.
S4, from release step：When piston 3 is moved upward to poor a little arrival 4 the top of cavity, using the position to be with pressure
Position, using the top of cavity 4 as pressure relieving position, the first control valve 6 is now closed, seal oil sample and original in the chamber of bottom up for safekeeping
Crude oil in oil-piping is in equal temperature and pressure；Now rotation hand wheel 14 makes piston 3 continue up shifting from position with pressure
Move to pressure relieving position, due to entering the chamber of the bottom of piston 3 without crude oil, piston 3 is moved up so that sealing the pressure of crude oil up for safekeeping quiet
Voluntarily reduced under state, when the registration of pressure gauge 11 is 0MPa, represents that the hydraulic pressure in the chamber 12 unloads and be depressed into atmospheric pressure, now stop
Rotation hand wheel 14, the second control valve 9 is closed, possessed from the sampler condition that outwards equipressure samples.
S5, outside sampling procedure：Because sampling valve 5 is arranged on the bottom of cavity 4, and with the chamber company to be opened/closed of bottom
It is logical, sample bottle will be connect it is placed in sampling valve 5 and export, opens sampling valve 5, rotation hand wheel 14 makes piston 3 slowly move down, you can
The oil sample do not sheared to isothermal and isobaric, after piston 3 reaches 4 bottom of cavity, sampling valve 5 and air-intaking exhaust valve 2 are closed, it is complete
The overall process sampled into Double-way sucking isothermal with pressure from the anti-shearing of release without waste oil.
It should be noted that in above-mentioned steps S5, rotation hand wheel 14 makes during piston 3 moves down, with work
The movement of plug 3, moved positioned at piston 3 in the chamber 12 at rear and negative pressure occurs, in order to avoid occurring because suction function makes work
Plug 3 continues to move to situation that is difficult and damaging the seal between piston 3 and sampler inwall, should open air intake-exhaust
Valve 2 is that the chamber 12 at the movement of piston 3 rear fills into gas.
In summary, in the sampler and sampling method of realizing the anti-shearing sampling of isothermal with pressure as described above, piston 3 is set
It is placed in cavity 4, will be divided into two chambers 12 in cavity 4, two chambers 12 are distinguished to be opened/closed is connected with crude oil pipeline；It is living
Plug 3 repeatedly moves back and forth in cavity 4, drives the fluid in crude oil pipeline alternately to pass in and out two chambers 12, until each chamber
Hydraulic pressure and liquid temperature in 12 is equal with the hydraulic pressure in crude oil pipeline and liquid temperature respectively；This method is proposed based on above-mentioned sampler.
The sampler and method can realize sampling, isothermal sampling and anti-shearing sampling with pressure simultaneously, can be completely eliminated during sampling
Sampling effect factor, reaches the requirement of the anti-shearing sampling of isothermal with pressure, and the oil sample of taking-up can truly reflect the reality of crude oil in pipe
Flow behavior；In addition, the sampler has self-unloading pressure, do not produce the effect of waste oil, the crude oil in chamber 12 can both take out use
In carrying out crude oil test, workload is both reduced, but it is economic and environment-friendly.
Embodiment of the present utility model in order to example and description for the sake of and provide, and be not exhaustively or will
The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art
See.Selection and description embodiment are to more preferably illustrate principle and practical application of the present utility model, and make this area
Those of ordinary skill it will be appreciated that the utility model so as to designing the various embodiments with various modifications suitable for special-purpose.
Claims (10)
1. a kind of sampler for realizing the anti-shearing sampling of isothermal with pressure, it is characterised in that including cavity and piston, the piston is set
It is placed in cavity, two chambers will be divided into the cavity, two chamber difference are to be opened/closed is connected with crude oil pipeline；
The piston repeatedly moves back and forth in cavity, drives the fluid in the crude oil pipeline alternately to pass in and out two chambers, directly
Hydraulic pressure and liquid temperature in each chamber is equal with the hydraulic pressure in the crude oil pipeline and liquid temperature respectively.
2. sampler according to claim 1, it is characterised in that hydraulic pressure and liquid temperature in each chamber respectively with
Hydraulic pressure and liquid temperature in the crude oil pipeline is equal, and any chamber is disconnected with crude oil pipeline and another and crude oil
During pipeline communication, using the current location of piston as position with pressure, release is set in the chamber connected with the crude oil pipeline
Position, it is spaced apart between the pressure relieving position and position with pressure；
The piston is stood after being moved to pressure relieving position from position with pressure, so that the liquid in the chamber disconnected with the crude oil pipeline
Press release in the quiescent state.
3. sampler according to claim 2, it is characterised in that also pass through work including piston rod and handwheel, the piston
Stopper rod is connected with handwheel, and the handwheel is moved by rotational band piston bar, to drive the piston to be moved in cavity.
4. sampler according to claim 3, it is characterised in that chamber lid is provided with the cavity, is set in the chamber lid
There is pilot hole, the pilot hole is used for being oriented to the reciprocating movement sealing of piston rod.
5. according to the sampler described in claim any one of 1-4, it is characterised in that two chambers connect by first respectively
Siphunculus and the second communicating pipe connect with crude oil pipeline.
6. sampler according to claim 5, it is characterised in that pacify respectively on first communicating pipe and the second communicating pipe
Equipped with the first control valve and the second control valve.
7. sampler according to claim 6, it is characterised in that first communicating pipe is provided with pressure gauge, the pressure
Power table is arranged between the first control valve and cavity.
8. sampler according to claim 6, it is characterised in that second communicating pipe is provided with pressure gauge, the pressure
Power table is arranged between the second control valve and cavity.
9. according to the sampler described in claim any one of 1-4, it is characterised in that be provided with air intake-exhaust on the cavity
Valve.
10. according to the sampler described in claim any one of 1-4, it is characterised in that be provided with sampling valve on the cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720413727.1U CN206656886U (en) | 2017-04-19 | 2017-04-19 | Realize the sampler of the anti-shearing sampling of Double-way sucking isothermal with pressure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720413727.1U CN206656886U (en) | 2017-04-19 | 2017-04-19 | Realize the sampler of the anti-shearing sampling of Double-way sucking isothermal with pressure |
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| CN107219095A (en) * | 2017-04-19 | 2017-09-29 | 中国石油大学(北京) | Realize the sampler and sampling method of the anti-shearing sampling of Double-way sucking isothermal with pressure |
| CN112556765A (en) * | 2019-09-25 | 2021-03-26 | 中国石油天然气股份有限公司 | Reciprocating gas flowmeter and working method thereof |
| CN112923605A (en) * | 2021-03-12 | 2021-06-08 | 一冷豪申新能源(上海)有限公司 | A draw and penetrate multi-functional oil return device of thermosyphon for heat pump set |
| CN113216950A (en) * | 2021-06-21 | 2021-08-06 | 西安精实信石油科技开发有限责任公司 | Device and method for reservoir fluid identification through pressure response |
| CN117288917A (en) * | 2023-11-27 | 2023-12-26 | 四川旌峰新材料有限公司 | Combustible gas detector |
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2017
- 2017-04-19 CN CN201720413727.1U patent/CN206656886U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219095A (en) * | 2017-04-19 | 2017-09-29 | 中国石油大学(北京) | Realize the sampler and sampling method of the anti-shearing sampling of Double-way sucking isothermal with pressure |
| CN112556765A (en) * | 2019-09-25 | 2021-03-26 | 中国石油天然气股份有限公司 | Reciprocating gas flowmeter and working method thereof |
| CN112923605A (en) * | 2021-03-12 | 2021-06-08 | 一冷豪申新能源(上海)有限公司 | A draw and penetrate multi-functional oil return device of thermosyphon for heat pump set |
| CN113216950A (en) * | 2021-06-21 | 2021-08-06 | 西安精实信石油科技开发有限责任公司 | Device and method for reservoir fluid identification through pressure response |
| CN113216950B (en) * | 2021-06-21 | 2024-03-08 | 西安精实信石油科技开发有限责任公司 | Device and method for recognizing reservoir fluid through pressure response |
| CN117288917A (en) * | 2023-11-27 | 2023-12-26 | 四川旌峰新材料有限公司 | Combustible gas detector |
| CN117288917B (en) * | 2023-11-27 | 2024-01-26 | 四川旌峰新材料有限公司 | Combustible gas detector |
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