CN104929614B - Single-well crude oil meter and its metering method applied to oil pumper - Google Patents
Single-well crude oil meter and its metering method applied to oil pumper Download PDFInfo
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- CN104929614B CN104929614B CN201510233634.6A CN201510233634A CN104929614B CN 104929614 B CN104929614 B CN 104929614B CN 201510233634 A CN201510233634 A CN 201510233634A CN 104929614 B CN104929614 B CN 104929614B
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Abstract
The invention discloses a kind of single-well crude oil meter and its metering method applied to oil pumper, the meter includes：First cylinder body；Second cylinder body；It is all connected with the inflow pipeline and flowline of first cylinder body one end and second cylinder body one end；Two ends connect the connecting pipeline of the first cylinder body other end and the second cylinder body other end respectively；It is movably arranged on the first piston part in the first cylinder body；It is movably arranged on the second piston part in the second cylinder body；The pilot liquid being placed between first piston part and second piston part；Flowmeter for detecting the pilot fluid flow for flowing through the connecting pipeline；For the first magnetic valve for controlling inflow pipeline and the first cylinder body whether to connect；For the 3rd magnetic valve for controlling inflow pipeline and the second cylinder body whether to connect；For the second magnetic valve for controlling flowline and the first cylinder body whether to connect；For the 4th magnetic valve for controlling flowline and the second cylinder body whether to connect；The error of present invention reduction crude oil measurement, improves the accuracy of metric results.
Description
Technical field
The present invention relates to a kind of crude oil metering device, specially applied to the single-well crude oil meter of oil pumper and its metering
Method.
Background technology
Directly unprocessed oil mined from oil well is crude oil, and crude oil is a kind of tool being made up of various hydro carbons
There is the material of certain viscous stickiness, its both on-liquid, also non-solid and gas vary with temperature and formed sometimes semi-solid semiliquid
State, large batch of crude oil measurement is to utilize pipeline in the prior art, and using flowmeter metering, and due to crude oil
Above-mentioned property so that the oil measurement that goes out of oil pumper (being commonly called as the machine of kowtowing) is always insoluble problem in the prior art, greatly
Most flow sensors or flowmeter can not steadily in the long term be run and reliable metering on crude oil pipeline, and a small number of flow instruments can
The continuous metering of crude oil is realized, but instrument cost is higher, such as Doppler ultrasonic sensor.And crude oil is in industrial production and daily
There is critical role in life, and through the oil product frequently as trade settlement, therefore accurate measurement meaning is very big to be realized to it, such as pass through
The crude oil of crude transition measuring station metering a, station is about millions of tons every year, and millesimal error will just cause annual 100
Ten thousand yuan of clearing balance.
The content of the invention
The present invention is directed to the proposition of problem above, and develops a kind of single-well crude oil meter and its meter applied to oil pumper
Amount method.
The technological means of the present invention is as follows：
A kind of single-well crude oil meter applied to oil pumper, the oil pumper has driving oil pumper reciprocating
Motor, the meter includes：
First cylinder body；
Second cylinder body；
It is all connected with the inflow pipeline and flowline of first cylinder body one end and second cylinder body one end；
Two ends connect the connecting pipeline of the first cylinder body other end and the second cylinder body other end respectively；
It is movably arranged on the first piston part in the first cylinder body；
It is movably arranged on the second piston part in the second cylinder body；
The pilot liquid being placed between first piston part and second piston part；
It is arranged on the connecting pipeline, the flowmeter for detecting the pilot fluid flow for flowing through the connecting pipeline；
For the first magnetic valve for controlling inflow pipeline and the first cylinder body whether to connect；
For the 3rd magnetic valve for controlling inflow pipeline and the second cylinder body whether to connect；
For the second magnetic valve for controlling flowline and the first cylinder body whether to connect；
For the 4th magnetic valve for controlling flowline and the second cylinder body whether to connect；First magnetic valve and described
Four magnetic valves constitute solenoid valve block I, and Simultaneous Switching；Second magnetic valve and the 3rd magnetic valve constitute solenoid valve block
II, and Simultaneous Switching；
The central processing module of connection flow gauge, solenoid valve block I and solenoid valve block II, the central processing module is used for institute
State after meter start-up operation, control solenoid valve block I or solenoid valve block II are opened, and work as the pilot liquid flow that flowmeter is detected
When amount is less than preset flow, solenoid valve block I or solenoid valve block II of the control in open mode are closed, while control is in closing
The solenoid valve block I or solenoid valve block II of state are opened so that solenoid valve block I and the alternation of solenoid valve block II in open mode and
Closed mode；
Further, the meter also includes the frequency converter that output end is connected with the motor；When the frequency converter
Output frequency change when, the rotating speed for the motor that oil pumper has changes therewith；
The pilot fluid flow and the consumption electric energy of the motor that central processing module is detected according to flowmeter according to
The following course of work controls the output frequency of the frequency converter：
1. the output frequency of the frequency converter is controlled to be equal to fi, and utilize formulaDraw the oil pump capacity of unit energy
ηi；fiFor predeterminated frequency；F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, what flowmeter was detected leads
Press liquid flow；W in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the consumption electric energy of motor；In formula
ηiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the oil pump capacity of unit energy；I values 1,2 ..., n, perform 2.；
2. f is madei+1=fi+ Δ f, while utilizing formulaDraw the oil pump capacity η of unit energyi+1；Δ f is default
Frequency variation；F in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, what flowmeter was detected
Pilot fluid flow；W in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the consumption electricity of motor
Energy；η in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the oil pump capacity of unit energy is performed
③；
3. η is comparediAnd ηi+1Size, if ηi+1≥ηi, perform 4., if ηi＞ ηi+1, perform 5.；
4. f is judgedi+1Whether f is less thanmax, it is that the output frequency for controlling the frequency converter is equal to fi+1, perform 10., otherwise
It is delayed certain time, performs step 5., wherein, fmaxFor upper frequency limit；
5. f is madei+1=fi- Δ f, Δ f are predeterminated frequency variable quantity, are performed 6.；
6. formula γ is utilizedi=Fi*fiDraw the oil pump capacity γ of unit intervali, utilize formula γi+1=Fi+1*fi+1Draw
The oil pump capacity γ of unit intervali+1, the F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, flowmeter is detected
Pilot fluid flow, the F in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, flowmeter is examined
7. the pilot fluid flow of survey, perform；
7. γ is comparediAnd γi+1Size, if γi＞ γi+1, perform 8., if γi+1≥γi, perform 9.；
8. the output frequency of the frequency converter is controlled to be equal to fi, perform 10.；
9. judge whether to shut down, be to terminate, otherwise control the output frequency of the frequency converter to be equal to fi+1, assignment again
fiAnd make fi=fi+1, return 5.；
10. assignment f againiAnd make fi=fi+1, return 2.；
In addition, the meter also includes the pressure sensor and temperature sensor being arranged on the connecting pipeline；
Further, the direction of motion of the first piston part and the second piston part is on the contrary, and first piston part phase
It is opposite relative to the position of the second cylinder body for the position and second piston part of the first cylinder body；
Further, there is steam vent on second cylinder body；There is pilot liquid injection port on first cylinder body；
Further, the time interval that definition solenoid valve block I opens between the opening of solenoid valve block II is the commutation cycle；Institute
State timing module and memory module that meter also includes being connected with central processing module；The central processing module controls institute
State timing module and timing, and leading of being detected of the timing time and flowmeter exported according to timing module are carried out to each commutation cycle
Press liquid flow draws the crude oil output volume in each commutation cycle；The central processing module is additionally operable to export the crude oil
Volume is stored to the memory module；
Further, the meter also includes the input module and display module being connected with central processing module；Institute
State timing module to be additionally operable to export cue to central processing module when timing time reaches preset time, the centre
Reason module controls the display module to show above-mentioned cue cue；The input module is used to receive user
The oil density and water content in crude oil parameter of input；Oil density and original that the central processing module is inputted according to input module
Oily water content parameter, exports volume with reference to the crude oil in each commutation cycle, draws the crude oil reality output matter in each commutation cycle
Amount.
A kind of metering method of the single-well crude oil meter as described above applied to oil pumper, comprises the following steps：
Step 1：Central processing module control solenoid valve block I is opened, and control solenoid valve block II is closed, inflow pipeline and second
Cylinder body is connected, and flowline is connected with the first cylinder body, and the crude oil come in is conveyed by inflow pipeline and enters the second cylinder body, second is promoted
Second piston part in cylinder body is moved right, and then promotes the pilot liquid outflow in the second cylinder body, is entered via connecting pipeline
First cylinder body, flowmeter detects the pilot fluid flow for flowing through connecting pipeline simultaneously, is pushed away into the pilot liquid in the first cylinder body
Air in first cylinder body is released to left movement, performs step 2 by the first piston part in dynamic first cylinder body；
Step 2：Judge whether the pilot fluid flow that flowmeter is detected is less than preset flow, be then to perform step 3, it is no
Then return to step 2；
Step 3：Central processing module control solenoid valve block II is opened, and control solenoid valve block I is closed, inflow pipeline and first
Cylinder body is connected, and flowline is connected with the second cylinder body, and the crude oil come in is conveyed by inflow pipeline and enters the first cylinder body, first is promoted
First piston part in cylinder body is moved right, and then promotes the pilot liquid outflow in the first cylinder body, is entered via connecting pipeline
Second cylinder body, flowmeter detects the pilot fluid flow for flowing through connecting pipeline simultaneously, is pushed away into the pilot liquid in the second cylinder body
Second piston part in dynamic second cylinder body is released the crude oil in the second cylinder body, by the original released in the second cylinder body to left movement
Oil flows out via flowline, performs step 4；
Step 4：Judge whether the pilot fluid flow that flowmeter is detected is less than preset flow, be then to perform step 5, it is no
Then return to step 4；
Step 5：Central processing module control solenoid valve block I is opened, and control solenoid valve block II is closed, inflow pipeline and second
Cylinder body is connected, and flowline is connected with the first cylinder body, and the crude oil come in is conveyed by inflow pipeline and enters the second cylinder body, second is promoted
Second piston part in cylinder body is moved right, and then promotes the pilot liquid outflow in the second cylinder body, is entered via connecting pipeline
First cylinder body, flowmeter detects the pilot fluid flow for flowing through connecting pipeline simultaneously, is pushed away into the pilot liquid in the first cylinder body
First piston part in dynamic first cylinder body is released the crude oil in the first cylinder body, by the original released in the first cylinder body to left movement
Oil flows out via flowline, return to step 2；
Further, the time interval that definition solenoid valve block I opens between the opening of solenoid valve block II is the commutation cycle；Institute
Stating metering method also has following steps：
Central processing module according to duration of each commutation cycle, with reference within the different commutation cycles flowmeter detected
Pilot fluid flow draw in each commutation cycle crude oil output volume；
After the output volume of the crude oil in each commutation cycle is drawn, the central processing module is close always according to the crude oil of input
Degree and water content in crude oil parameter, volume is exported with reference to the crude oil in each commutation cycle, show that the crude oil in each commutation cycle is actual
Export quality；
Further, the metering method also has following steps：
The pilot fluid flow and the consumption electric energy of the motor that central processing module is detected according to flowmeter according to
The output frequency for the frequency converter that following course of work control output end is connected with the motor：
1. the output frequency of the frequency converter is controlled to be equal to fi, and utilize formulaDraw the oil pump capacity of unit energy
ηi；fiFor predeterminated frequency；F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, what flowmeter was detected leads
Press liquid flow；W in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the consumption electric energy of motor；In formula
ηiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the oil pump capacity of unit energy；I values 1,2 ..., n, perform 2.；
2. f is madei+1=fi+ Δ f, while utilizing formulaDraw the oil pump capacity η of unit energyi+1；Δ f is default
Frequency variation；F in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, what flowmeter was detected
Pilot fluid flow；W in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the consumption electricity of motor
Energy；η in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the oil pump capacity of unit energy is performed
③；
3. η is comparediAnd ηi+1Size, if ηi+1≥ηi, perform 4., if ηi＞ ηi+1, perform 5.；
4. f is judgedi+1Whether f is less thanmax, it is that the output frequency for controlling the frequency converter is equal to fi+1, perform 10., otherwise
It is delayed certain time, performs step 5., wherein, fmaxFor upper frequency limit；
5. f is madei+1=fi- Δ f, Δ f are predeterminated frequency variable quantity, are performed 6.；
6. formula γ is utilizedi=Fi*fiDraw the oil pump capacity γ of unit intervali, utilize formula γi+1=Fi+1*fi+1Draw
The oil pump capacity γ of unit intervali+1, the F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, flowmeter is detected
Pilot fluid flow, the F in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, flowmeter is examined
7. the pilot fluid flow of survey, perform；
7. γ is comparediAnd γi+1Size, if γi＞ γi+1, perform 8., if γi+1≥γi, perform 9.；
8. the output frequency of the frequency converter is controlled to be equal to fi, perform 10.；
9. judge whether to shut down, be to terminate, otherwise control the output frequency of the frequency converter to be equal to fi+1, assignment again
fiAnd make fi=fi+1, return 5.；
10. assignment f againiAnd make fi=fi+1, return 2..
By adopting the above-described technical solution, the single-well crude oil meter and its meter applied to oil pumper that the present invention is provided
Amount method, pressure conduction is realized by pilot liquid, it is to avoid flow monitoring equipment directly contacts crude oil in the prior art
Crude oil measurement mode, overcomes the difficulty in crude oil measurement, and service life is longer, installs simple, and it is defeated only to be sealed in crude oil
Send in pipeline, easy to maintenance, operation and testing cost are low, and electronic power consuming elements are few, energy-conservation, can be precisely calculated fuel-displaced
Amount, can substantially reduce the error of crude oil measurement, improve the accuracy of metric results；The present invention is situated between by using middle pilot
Matter, dual-active plug member and twin-rotor housing, dexterously can not will for a long time be used for the flow detection device of oil product applied in oil field, by anti-
The flow of repetition measurement amount pilot medium replaces direct measurement oil flow, and controls oil pumping according to the oil pump capacity of unit energy
Electromechanical machine, and the oil pump capacity of unit energy is equal to the consumption electric energy of the pilot fluid flow that is detected of flowmeter divided by motor, makes
Obtain data on flows is directly associated with oil pumper electric control part, realizes that the oil pump capacity of per unit energy is maximum, and control is pumped
Electromechanical machine works to reach the purpose of economize on electricity.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1, Fig. 2 are the structural representations of meter of the present invention；
Fig. 3 is the flow chart of metering method of the present invention；
Fig. 4 is the workflow diagram of the output frequency of central processing unit control frequency converter of the present invention.
In figure：1st, flowline, 2, inflow pipeline, the 3, first magnetic valve, the 4, second magnetic valve, the 5, the 3rd magnetic valve, 6,
4th magnetic valve, 7, first piston part, the 8, first cylinder body, 9, pilot liquid injection port, the 10, second cylinder body, 11, second piston
Part, 12, steam vent, 13, pilot liquid, 14, flowmeter, 15, connecting pipeline, 16, pressure sensor, 17, temperature sensor,
18th, stop bolster.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The all other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1, Fig. 2 are the structural representations of meter of the present invention, wherein, Fig. 1 shows that solenoid valve block I opens (
One magnetic valve 3 is opened, the 4th magnetic valve 6 is opened), solenoid valve block II closes that (the second magnetic valve 4 is closed, the 3rd magnetic valve 5 is closed
Close) situation, first piston part 7 and second piston part 11 in Fig. 1 are also in initial position, and second piston part 11 can be due to the
Two cylinder bodies 10 enter crude oil and move right；Fig. 2 shows that solenoid valve block II opens that (the second magnetic valve 4 is opened, the 3rd electromagnetism
Valve 5 is opened), the first piston that solenoid valve block I is closed in the situation of (the first magnetic valve 3 is closed, the 4th magnetic valve 6 is closed), Fig. 2
Part 7 and second piston part 11 are also in initial position, and first piston part 7 can to the right be transported due to the crude oil that the first cylinder body 8 enters
It is dynamic.
As shown in Figure 1, Figure 2 and Figure 4, a kind of single-well crude oil meter applied to oil pumper, the oil pumper, which has, to be driven
The reciprocating motor of dynamic oil pumper, the meter includes：First cylinder body 8；Second cylinder body 10；It is all connected with the first cylinder body 8
One end and the inflow pipeline 2 and flowline 1 of the one end of the second cylinder body 10；Two ends connect the other end of the first cylinder body 8 and second respectively
The connecting pipeline 15 of the other end of cylinder body 10；It is movably arranged on the first piston part 7 in the first cylinder body 8；It is movably arranged on the second cylinder
Second piston part 11 in body 10；The pilot liquid 13 being placed between first piston part 7 and second piston part 11；It is arranged on described
On connecting pipeline 15, the flowmeter 14 for detecting the flow of pilot liquid 13 for flowing through the connecting pipeline 15；For control into
The first magnetic valve 3 whether oil-piping 2 connects with the first cylinder body 8；For controlling whether inflow pipeline 2 connects with the second cylinder body 10
The 3rd magnetic valve 5；For the second magnetic valve 4 for controlling flowline 1 whether to be connected with the first cylinder body 8；It is fuel-displaced for controlling
The 4th magnetic valve 6 whether pipeline 1 connects with the second cylinder body 10；First magnetic valve 3 and the 4th magnetic valve 6 constitute electricity
Magnet valve group I, and Simultaneous Switching；Second magnetic valve 4 and the 3rd magnetic valve 5 constitute solenoid valve block II, and Simultaneous Switching；
The central processing module of connection flow gauge 14, solenoid valve block I and solenoid valve block II, the central processing module is used for the metering
After device is started working, control solenoid valve block I or solenoid valve block II are opened, and work as the flow of pilot liquid 13 that flowmeter 14 is detected
During less than preset flow, solenoid valve block I or solenoid valve block II of the control in open mode are closed, while control is in closing shape
The solenoid valve block I or solenoid valve block II of state are opened so that solenoid valve block I and the alternation of solenoid valve block II are in open mode and pass
Closed state；Further, the meter also includes the frequency converter that output end is connected with the motor；When the frequency converter
When output frequency changes, the rotating speed for the motor that oil pumper has changes therewith；
The flow of pilot liquid 13 and the consumption electric energy of the motor that central processing module is detected according to flowmeter 14
The output frequency of the frequency converter is controlled according to the following course of work：
1. the output frequency of the frequency converter is controlled to be equal to fi, and utilize formulaDraw the oil pump capacity of unit energy
ηi；fiFor predeterminated frequency；F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, what flowmeter 14 was detected
The flow of pilot liquid 13；W in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the consumption electric energy of motor；Formula
In ηiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the oil pump capacity of unit energy；I values 1,2 ..., n, perform
②；
2. f is madei+1=fi+ Δ f, while utilizing formulaDraw the oil pump capacity η of unit energyi+1；Δ f is default
Frequency variation；F in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, flowmeter 14 is detected
The flow of pilot liquid 13；W in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, motor disappears
Consuming electric power；η in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the oil pump capacity of unit energy is held
Row is 3.；
3. η is comparediAnd ηi+1Size, if ηi+1≥ηi, perform 4., if ηi＞ ηi+1, perform 5.；
4. f is judgedi+1Whether f is less thanmax, it is that the output frequency for controlling the frequency converter is equal to fi+1, perform 10., otherwise
It is delayed certain time, performs step 5., wherein, fmaxFor upper frequency limit；
5. f is madei+1=fi- Δ f, Δ f are predeterminated frequency variable quantity, are performed 6.；
6. formula γ is utilizedi=Fi*fiDraw the oil pump capacity γ of unit intervali, utilize formula γi+1=Fi+1*fi+1Draw
The oil pump capacity γ of unit intervali+1, the F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, flowmeter 14 is examined
F in the flow of pilot liquid 13 of survey, formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, flowmeter
7. 14 flows of pilot liquid 13 detected, perform；
7. γ is comparediAnd γi+1Size, if γi＞ γi+1, perform 8., if γi+1≥γi, perform 9.；
8. the output frequency of the frequency converter is controlled to be equal to fi, perform 10.；
9. judge whether to shut down, be to terminate, otherwise control the output frequency of the frequency converter to be equal to fi+1, make fi=
fi+1, return 5.；
10. f is madei=fi+1, return 2.；
In addition, the meter also includes the pressure sensor 16 and temperature sensor being arranged on the connecting pipeline 15
17；Further, the direction of motion of the first piston part 7 and the second piston part 11 is on the contrary, and first piston part 7 is relative
It is opposite relative to the position of the second cylinder body 10 with second piston part 11 in the position of the first cylinder body 8；Further, second cylinder
There is steam vent 12 on body 10；There is pilot liquid injection port 9 on first cylinder body 8；Further, solenoid valve block I is defined
It is the commutation cycle to open the time interval between the opening of solenoid valve block II；The meter also includes and central processing module phase
The timing module and memory module of connection；The central processing module controls the timing module to count each commutation cycle
When, and the flow of pilot liquid 13 that the timing time and flowmeter 14 exported according to timing module is detected draws each commutation cycle
Interior crude oil output volume；The central processing module is additionally operable to store to the memory module crude oil output volume；
Further, the meter also includes the input module and display module being connected with central processing module；The timing mould
Block is additionally operable to export cue to central processing module when timing time reaches preset time, the central processing module control
The display module is made to show above-mentioned cue；The input module be used for receive user input oil density and
Water content in crude oil parameter；Oil density and water content in crude oil parameter that the central processing module is inputted according to input module, knot
The crude oil output volume in each commutation cycle is closed, the crude oil reality output quality in each commutation cycle is drawn；The flowmeter 14
Preferably electromagnetic flowmeter 14, the volume flow of pilot liquid 13 and direction of the traffic that 14 pairs of electromagnetic flowmeter flows through is recorded,
When pilot liquid 13 flow less than preset flow such as level off to zero when, illustrate in this time first cylinder body 8 or the second cylinder body 10
Crude oil substantially release cylinder body outside；The central processing module is preferably CPU or single-chip microcomputer；The pilot liquid 13 is preferred
For anti-freezing liquid；Further, stop bolster 18 is provided with the first cylinder body 8 and the two ends of the second cylinder body 10, when the first work
When plug member 7 moves to the either end of the first cylinder body 8, and when second piston part 11 moves to the either end of the second cylinder body 10
When, it can realize that first piston part 7, the stop of second piston part 11 and motion are buffered by stop bolster 18；The stop
Bolster 18 can be elastic structure.
As shown in Figure 3 and Figure 4, a kind of metering method of the single-well crude oil meter as described above applied to oil pumper,
Comprise the following steps：
Step 1：Central processing module control solenoid valve block I is opened, and control solenoid valve block II is closed, inflow pipeline 2 and the
Two cylinder bodies 10 are connected, and flowline 1 is connected with the first cylinder body 8, and the crude oil come in is conveyed by inflow pipeline 2 and enters the second cylinder body
10, promote the second piston part 11 in the second cylinder body 10 to move right, and then promote the pilot liquid 13 in the second cylinder body 10 to flow
Go out, enter the first cylinder body 8 via connecting pipeline 15, flowmeter 14 detects that the pilot liquid 13 for flowing through connecting pipeline 15 flows simultaneously
Amount, promotes the first piston part 7 in the first cylinder body 8 to left movement, by the first cylinder body into the pilot liquid 13 in the first cylinder body 8
Air in 8 is released, and performs step 2；
Step 2：Judge whether the flow of pilot liquid 13 that flowmeter 14 is detected is less than preset flow, be to perform step
3, otherwise return to step 2；
Step 3：Central processing module control solenoid valve block II is opened, and control solenoid valve block I is closed, inflow pipeline 2 and the
One cylinder body 8 is connected, and flowline 1 is connected with the second cylinder body 10, and the crude oil come in is conveyed by inflow pipeline 2 and enters the first cylinder body 8,
Promote the first piston part 7 in the first cylinder body 8 to move right, and then promote the pilot liquid 13 in the first cylinder body 8 to flow out, via
Connecting pipeline 15 enters the second cylinder body 10, and flowmeter 14 detects the flow of pilot liquid 13 for flowing through connecting pipeline 15 simultaneously, enters
Pilot liquid 13 in second cylinder body 10 promotes the second piston part 11 in the second cylinder body 10 to left movement, by the second cylinder body 10
Crude oil release, flowed out by the crude oil released in the second cylinder body 10 via flowline 1, perform step 4；
Step 4：Judge whether the flow of pilot liquid 13 that flowmeter 14 is detected is less than preset flow, be to perform step
5, otherwise return to step 4；
Step 5：Central processing module control solenoid valve block I is opened, and control solenoid valve block II is closed, inflow pipeline 2 and the
Two cylinder bodies 10 are connected, and flowline 1 is connected with the first cylinder body 8, and the crude oil come in is conveyed by inflow pipeline 2 and enters the second cylinder body
10, promote the second piston part 11 in the second cylinder body 10 to move right, and then promote the pilot liquid 13 in the second cylinder body 10 to flow
Go out, enter the first cylinder body 8 via connecting pipeline 15, flowmeter 14 detects that the pilot liquid 13 for flowing through connecting pipeline 15 flows simultaneously
Amount, promotes the first piston part 7 in the first cylinder body 8 to left movement, by the first cylinder body into the pilot liquid 13 in the first cylinder body 8
Crude oil in 8 is released, and is flowed out by the crude oil released in the first cylinder body 8 via flowline 1, return to step 2；
Further, the time interval that definition solenoid valve block I opens between the opening of solenoid valve block II is the commutation cycle；Institute
Stating metering method also has following steps：
Central processing module according to duration of each commutation cycle, with reference within the different commutation cycles flowmeter 14 examined
The flow of pilot liquid 13 of survey draws the crude oil output volume in each commutation cycle；
After the output volume of the crude oil in each commutation cycle is drawn, the central processing module is close always according to the crude oil of input
Degree and water content in crude oil parameter, volume is exported with reference to the crude oil in each commutation cycle, show that the crude oil in each commutation cycle is actual
Export quality；
Further, the metering method also has following steps：
The flow of pilot liquid 13 and the consumption electric energy of the motor that central processing module is detected according to flowmeter 14
The output frequency for the frequency converter being connected according to following course of work control output end with the motor：
1. the output frequency of the frequency converter is controlled to be equal to fi, and utilize formulaDraw the oil pump capacity of unit energy
ηi；fiFor predeterminated frequency；F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, what flowmeter 14 was detected
The flow of pilot liquid 13；W in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the consumption electric energy of motor；Formula
In ηiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the oil pump capacity of unit energy；I values 1,2 ..., n, n is
2. cycle-index, perform；
2. f is madei+1=fi+ Δ f, while utilizing formulaDraw the oil pump capacity η of unit energyi+1；Δ f is default
Frequency variation；F in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, flowmeter 14 is detected
The flow of pilot liquid 13；W in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, motor disappears
Consuming electric power；η in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the oil pump capacity of unit energy is held
Row is 3.；
3. η is comparediAnd ηi+1Size, if ηi+1≥ηi, perform 4., if ηi＞ ηi+1, perform 5.；
4. f is judgedi+1Whether f is less thanmax, it is that the output frequency for controlling the frequency converter is equal to fi+1, perform 10., otherwise
It is delayed certain time, the certain time can be 4 hours, perform step 5., wherein, fmaxFor upper frequency limit；
5. f is madei+1=fi- Δ f, Δ f are predeterminated frequency variable quantity, are performed 6.；
6. formula γ is utilizedi=Fi*fiDraw the oil pump capacity γ of unit intervali, utilize formula γi+1=Fi+1*fi+1Draw
The oil pump capacity γ of unit intervali+1, the F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, flowmeter 14 is examined
F in the flow of pilot liquid 13 of survey, formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, flowmeter
7. 14 flows of pilot liquid 13 detected, perform；
7. γ is comparediAnd γi+1Size, if γi＞ γi+1, perform 8., if γi+1≥γi, perform 9.；
8. the output frequency of the frequency converter is controlled to be equal to fi, perform 10.；
9. judge whether to shut down, be to terminate, otherwise control the output frequency of the frequency converter to be equal to fi+1, make fi=
fi+1, return 5.；
10. f is madei=fi+1, return 2..
F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the pilot liquid that flowmeter 14 is detected
13 flows, FiThe output frequency for being specifically as follows frequency converter is equal to fiWhen the average discharge of pilot liquid 13, or frequency converter
Output frequency be equal to fiWhen the maximum stream flow of pilot liquid 13.
The flow parameter that flowmeter 14 of the present invention is exported is transferred to central processing module by first communication module, and
The central processing module transmits the control information of solenoid valve block I and solenoid valve block II by first communication module；The center
Processing module is by second communication module output frequency control parameter to frequency converter；The central processing module can be by foregoing crude oil
Output volume and, crude oil reality output quality and above-mentioned flow parameter is sent to by remote terminal by wireless communication module；Institute
State the first communication unit and the second communication unit, it is preferred to use RS232 communication units.
Flowmeter 14 of the present invention draw for volume flow, with m3/ h is unit, the volume flow and timing module
The timing time of output is opened as the crude oil volume that product is in each commutation cycle, above-mentioned timing time for solenoid valve block I
Time interval between being opened with solenoid valve block II is a commutation cycle.Meter of the present invention also includes being arranged on described
Pressure sensor 16 and temperature sensor 17 on connecting pipeline 15, pass through the pressure of pilot liquid 13 and temperature into connecting pipeline 15
The measurement of degree is easy to be modified flow testing result.
Under the pressure of oil pumper oil supply, crude oil enters the first cylinder body 8 or the second cylinder body 10 by inflow pipeline 2；This hair
Crude oil output volume in each commutation cycle add up by the bright central processing module can show that meter is started working
To power cut-off crude oil output volume and；Similarly, the central processing module is actually defeated by the crude oil in each commutation cycle
Mass carry out it is cumulative can draw meter start working to the crude oil reality output quality of power cut-off and；The display mould
Block crude oil can be exported volume and, and crude oil reality output quality and shown.
Timing module of the present invention can not only carry out timing to each commutation cycle, can also work as timing time and reach preset time
When export cue to central processing module, the preset time is preferably 4 hours, and operating personnel believe according to above-mentioned prompting
Number, complete petroleum crude sampling and the measure of oil density and water content is completed using oil sample, and measurement result is passed through into input module
Input, the measurement result, which can consider in 4 hours, keeps constant, and central processing module contains according to the oil density and crude oil of input
Water amount parameters, export volume with reference to the crude oil in each commutation cycle, draw the crude oil reality output quality in each commutation cycle, no
The conversion of crude oil volume and quality has been only completed, and has been avoided in the prior art with the extension of the oilfield exploitation time limit, crude oil has contained
The problem of water rate gradually increases.
The present invention realizes pressure conduction by pilot liquid, it is to avoid flow monitoring equipment is directly contacted in the prior art
The crude oil measurement mode of crude oil, overcomes the difficulty in crude oil measurement, and service life is longer, installs simple, need to only be sealed in
Easy to maintenance in crude oil pipeline, operation and testing cost are low, and electronic power consuming elements are few, energy-conservation, can accurately count
Oil mass is calculated, the error of crude oil measurement can be substantially reduced, the accuracy of metric results is improved；The present invention is led by using centre
Medium, dual-active plug member and twin-rotor housing are pressed, dexterously can not will for a long time be used for the flow detection device of oil product applied in oil field, lead to
Cross the flow of repeated measurement pilot medium to replace direct measurement oil flow, and controlled according to the oil pump capacity of unit energy
Pumping-unit motor, and the oil pump capacity of unit energy is electric equal to the consumption of pilot fluid flow divided by motor that flowmeter is detected
Can so that data on flows is directly and oil pumper electric control part is associated, realize that the oil pump capacity of per unit energy is maximum, and control
Pumping-unit motor works to reach the purpose of economize on electricity.
The flowmeter that the present invention relies on detection connecting pipeline pilot flow quantity provides the input that data make central processing unit, together
When central processing unit also provide the given frequency of frequency converter of driving motor of oil extractor, pass through the given side of this frequency of the invention
Method carries out comprehensive computing, and commander's frequency converter sends a new frequency, allows oil pumper new operation at frequencies herein, and flowmeter is again
One new data on flows can be provided, repetition said process repeatedly, until whole system is operated in, oil pump capacity is maximum, consume energy most
Small working condition.
The foregoing is intended to be a preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of single-well crude oil meter applied to oil pumper, the oil pumper has the reciprocating electricity of driving oil pumper
Machine, it is characterised in that the meter includes：
First cylinder body；
Second cylinder body；
It is all connected with the inflow pipeline and flowline of first cylinder body one end and second cylinder body one end；
Two ends connect the connecting pipeline of the first cylinder body other end and the second cylinder body other end respectively；
It is movably arranged on the first piston part in the first cylinder body；
It is movably arranged on the second piston part in the second cylinder body；
The pilot liquid being placed between first piston part and second piston part；
It is arranged on the connecting pipeline, the flowmeter for detecting the pilot fluid flow for flowing through the connecting pipeline；
For the first magnetic valve for controlling inflow pipeline and the first cylinder body whether to connect；
For the 3rd magnetic valve for controlling inflow pipeline and the second cylinder body whether to connect；
For the second magnetic valve for controlling flowline and the first cylinder body whether to connect；
For the 4th magnetic valve for controlling flowline and the second cylinder body whether to connect；First magnetic valve and the 4th electricity
Magnet valve constitutes solenoid valve block I, and Simultaneous Switching；Second magnetic valve and the 3rd magnetic valve constitute solenoid valve block II, and
Simultaneous Switching；
The central processing module of connection flow gauge, solenoid valve block I and solenoid valve block II, the central processing module is based on described
After measuring device is started working, control solenoid valve block I or solenoid valve block II are opened, and when the pilot fluid flow that flowmeter is detected is low
When preset flow, solenoid valve block I or solenoid valve block II of the control in open mode are closed, while control is closed
Solenoid valve block I or solenoid valve block II open so that solenoid valve block I and the alternation of solenoid valve block II are in open mode and closing
State.
2. the single-well crude oil meter according to claim 1 applied to oil pumper, it is characterised in that the meter is also
The frequency converter being connected including output end with the motor；When the output frequency of the frequency converter changes, what oil pumper had
The rotating speed of the motor changes therewith；
The pilot fluid flow and the consumption electric energy of the motor that central processing module is detected according to flowmeter are according to as follows
The course of work controls the output frequency of the frequency converter：
1. the output frequency of the frequency converter is controlled to be equal to fi, and utilize formulaDraw the oil pump capacity η of unit energyi；fi
For predeterminated frequency；F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the pilot liquid that flowmeter is detected
Flow；W in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the consumption electric energy of motor；η in formulaiRepresent
It is equal to f in the output frequency of frequency converteriIn the case of, the oil pump capacity of unit energy；I values 1,2 ..., n, perform 2.；
2. f is madei+1=fi+ Δ f, while utilizing formulaDraw the oil pump capacity η of unit energyi+1；Δ f is predeterminated frequency
Variable quantity；F in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the pilot that flowmeter is detected
Fluid flow；W in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the consumption electric energy of motor；Formula
In ηi+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, 3. the oil pump capacity of unit energy performs；
3. η is comparediAnd ηi+1Size, if ηi+1≥ηi, perform 4., if ηi＞ ηi+1, perform 5.；
4. f is judgedi+1Whether f is less thanmax, it is that the output frequency for controlling the frequency converter is equal to fi+1, perform 10., be otherwise delayed
Certain time, perform step 5., wherein, fmaxFor upper frequency limit；
5. f is madei+1=fi- Δ f, Δ f are predeterminated frequency variable quantity, are performed 6.；
6. formula γ is utilizedi=Fi*fiDraw the oil pump capacity γ of unit intervali, utilize formula γi+1=Fi+1*fi+1When drawing unit
Between oil pump capacity γi+1, the F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the pilot that flowmeter is detected
F in fluid flow, formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, what flowmeter was detected leads
7. press liquid flow, perform；
7. γ is comparediAnd γi+1Size, if γi＞ γi+1, perform 8., if γi+1≥γi, perform 9.；
8. the output frequency of the frequency converter is controlled to be equal to fi, perform 10.；
9. judge whether to shut down, be to terminate, otherwise control the output frequency of the frequency converter to be equal to fi+1, assignment f againiAnd make
fi=fi+1, return 5.；
10. assignment f againiAnd make fi=fi+1, return 2..
3. the single-well crude oil meter according to claim 1 applied to oil pumper, it is characterised in that the meter is also
Including the pressure sensor and temperature sensor on the connecting pipeline.
4. the single-well crude oil meter according to claim 1 applied to oil pumper, it is characterised in that the first piston
The direction of motion of part and the second piston part is on the contrary, and position of the first piston part relative to the first cylinder body and second piston part
Position relative to the second cylinder body is opposite.
5. the single-well crude oil meter according to claim 1 applied to oil pumper, it is characterised in that second cylinder body
It is upper that there is steam vent；There is pilot liquid injection port on first cylinder body.
6. the single-well crude oil meter according to claim 1 applied to oil pumper, it is characterised in that define solenoid valve block I
It is the commutation cycle to open the time interval between the opening of solenoid valve block II；The meter also includes and central processing module phase
The timing module and memory module of connection；The central processing module controls the timing module to count each commutation cycle
When, and the pilot fluid flow that the timing time and flowmeter exported according to timing module is detected drawn in each commutation cycle
Crude oil exports volume；The central processing module is additionally operable to store to the memory module crude oil output volume.
7. the single-well crude oil meter according to claim 6 applied to oil pumper, it is characterised in that the meter is also
Including the input module and display module being connected with central processing module；The timing module is additionally operable to when timing time reaches
Cue is exported during preset time to central processing module, the central processing module controls the display module to be carried to above-mentioned
Show that signal is shown；The input module is used for the oil density and water content in crude oil parameter for receiving user input；In described
Oil density and water content in crude oil parameter that centre processing module is inputted according to input module, it is defeated with reference to the crude oil in each commutation cycle
Go out volume, draw the crude oil reality output quality in each commutation cycle.
8. a kind of metering method of the single-well crude oil meter as claimed in claim 1 applied to oil pumper, it is characterised in that
The metering method comprises the following steps：
Step 1：Central processing module control solenoid valve block I is opened, and control solenoid valve block II is closed, inflow pipeline and the second cylinder body
Connection, flowline is connected with the first cylinder body, and the crude oil come in is conveyed by inflow pipeline and enters the second cylinder body, the second cylinder body is promoted
In second piston part move right, and then promote the second cylinder body in pilot liquid outflow, enter first via connecting pipeline
Cylinder body, flowmeter is detected simultaneously flows through the pilot fluid flow of connecting pipeline, into the pilot liquid-driving in the first cylinder body the
Air in first cylinder body is released to left movement, performs step 2 by the first piston part in one cylinder body；
Step 2：Judge whether the pilot fluid flow that flowmeter is detected is less than preset flow, be then to perform step 3, otherwise return
Return step 2；
Step 3：Central processing module control solenoid valve block II is opened, and control solenoid valve block I is closed, inflow pipeline and the first cylinder body
Connection, flowline is connected with the second cylinder body, and the crude oil come in is conveyed by inflow pipeline and enters the first cylinder body, the first cylinder body is promoted
In first piston part move right, and then promote the first cylinder body in pilot liquid outflow, enter second via connecting pipeline
Cylinder body, flowmeter is detected simultaneously flows through the pilot fluid flow of connecting pipeline, into the pilot liquid-driving in the second cylinder body the
Second piston part in two cylinder bodies releases the crude oil in the second cylinder body to left movement, is passed through by the crude oil released in the second cylinder body
Flowed out by flowline, perform step 4；
Step 4：Judge whether the pilot fluid flow that flowmeter is detected is less than preset flow, be then to perform step 5, otherwise return
Return step 4；
Step 5：Central processing module control solenoid valve block I is opened, and control solenoid valve block II is closed, inflow pipeline and the second cylinder body
Connection, flowline is connected with the first cylinder body, and the crude oil come in is conveyed by inflow pipeline and enters the second cylinder body, the second cylinder body is promoted
In second piston part move right, and then promote the second cylinder body in pilot liquid outflow, enter first via connecting pipeline
Cylinder body, flowmeter is detected simultaneously flows through the pilot fluid flow of connecting pipeline, into the pilot liquid-driving in the first cylinder body the
First piston part in one cylinder body releases the crude oil in the first cylinder body to left movement, is passed through by the crude oil released in the first cylinder body
Flowed out by flowline, return to step 2.
9. the metering method of the single-well crude oil meter according to claim 8 applied to oil pumper, it is characterised in that fixed
The time interval that adopted solenoid valve block I opens between the opening of solenoid valve block II is the commutation cycle；The metering method also has such as
Lower step：
Central processing module is according to duration of each commutation cycle, with reference to the leading of being detected of flowmeter within the different commutation cycles
Press liquid flow draws the crude oil output volume in each commutation cycle；
Draw the crude oil in each commutation cycle output volume after, the central processing module always according to input oil density and
Water content in crude oil parameter, exports volume with reference to the crude oil in each commutation cycle, draws the crude oil reality output in each commutation cycle
Quality.
10. the metering method of the single-well crude oil meter according to claim 8 applied to oil pumper, it is characterised in that institute
Stating metering method also has following steps：
The pilot fluid flow and the consumption electric energy of the motor that central processing module is detected according to flowmeter are according to as follows
The output frequency for the frequency converter that course of work control output end is connected with the motor：
1. the output frequency of the frequency converter is controlled to be equal to fi, and utilize formulaDraw the oil pump capacity η of unit energyi；fi
For predeterminated frequency；F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the pilot liquid that flowmeter is detected
Flow；W in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the consumption electric energy of motor；η in formulaiRepresent
It is equal to f in the output frequency of frequency converteriIn the case of, the oil pump capacity of unit energy；I values 1,2 ..., n, perform 2.；
2. f is madei+1=fi+ Δ f, while utilizing formulaDraw the oil pump capacity η of unit energyi+1；Δ f is predeterminated frequency
Variable quantity；F in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the pilot that flowmeter is detected
Fluid flow；W in formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, the consumption electric energy of motor；Formula
In ηi+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, 3. the oil pump capacity of unit energy performs；
3. η is comparediAnd ηi+1Size, if ηi+1≥ηi, perform 4., if ηi＞ ηi+1, perform 5.；
4. f is judgedi+1Whether f is less thanmax, it is that the output frequency for controlling the frequency converter is equal to fi+1, perform 10., be otherwise delayed
Certain time, perform step 5., wherein, fmaxFor upper frequency limit；
5. f is madei+1=fi- Δ f, Δ f are predeterminated frequency variable quantity, are performed 6.；
6. formula γ is utilizedi=Fi*fiDraw the oil pump capacity γ of unit intervali, utilize formula γi+1=Fi+1*fi+1When drawing unit
Between oil pump capacity γi+1, the F in formulaiRepresent that the output frequency in frequency converter is equal to fiIn the case of, the pilot that flowmeter is detected
F in fluid flow, formulai+1Represent that the output frequency in frequency converter is equal to the fi+1In the case of, what flowmeter was detected leads
7. press liquid flow, perform；
7. γ is comparediAnd γi+1Size, if γi＞ γi+1, perform 8., if γi+1≥γi, perform 9.；
8. the output frequency of the frequency converter is controlled to be equal to fi, perform 10.；
9. judge whether to shut down, be to terminate, otherwise control the output frequency of the frequency converter to be equal to fi+1, assignment f againiAnd make
fi=fi+1, return 5.；
10. assignment f againiAnd make fi=fi+1, return 2..
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| CN110424946A (en) * | 2019-08-23 | 2019-11-08 | 董向军 | Single well metering device, individual well and one-well metering method |
| CN112012717B (en) * | 2020-08-31 | 2021-05-18 | 青州市春晖科技发展有限公司 | Double-piston type liquid production metering device for oil well and metering method thereof |
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| CN104929614A (en) | 2015-09-23 |
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