CN104213902A - Fluid metering skid and metering method thereof - Google Patents
Fluid metering skid and metering method thereof Download PDFInfo
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- CN104213902A CN104213902A CN201410442111.8A CN201410442111A CN104213902A CN 104213902 A CN104213902 A CN 104213902A CN 201410442111 A CN201410442111 A CN 201410442111A CN 104213902 A CN104213902 A CN 104213902A
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Abstract
The invention discloses a fluid metering skid and a metering method thereof, relates to the technical field of flow measurement and aims to solve the technical problem that the gas-liquid mixed metering precision is low. The metering skid comprises a base, a metering cylinder and a four-way reversing valve; the metering cylinder is a columnar cylinder body; a piston is arranged in the inner cavity of the metering cylinder; two medium openings are respectively formed in both ends of the inner cavity of the metering cylinder; the two medium openings are respectively connected to the A port and the B port of the four-way reversing valve through pressure hoses; both ends of the metering cylinder are respectively provided with a reversing switch used for triggering the four-way reversing valve to perform reversing; the piston is provided with a reversing triggering part used for triggering the reversing switches to close; the metering cylinder is put on the base through a weighing sensor; the base is provided with a weighing and metering module used for collecting induction data of the weighing sensor; the control end of the weighing and metering module is connected to the two reversing switches. The metering skid provided by the invention is especially suitable for metering produced fluid of oilfield oil wells, and can be used for simultaneously metering mixed fluid of oil-water gas.
Description
Technical field
The present invention relates to flow measurement technology, particularly relate to the technology of a kind of fluid metering sled and method of measurement thereof.
Background technology
Existing oilfield all adopts Skip meter to measure production fluid amount, the basic principle of this Skip meter is that a rotating shaft is set in airtight measurement chamber, two tipping buckets of symmetrical installation in rotating shaft, the Hall element that is connected to electronic counter is installed in rotating shaft, during device work, first tipping bucket upward, second tipping bucket down, individual well is next oily enters chamber measurement chamber from import, then overflow is to first tipping bucket of lower chamber, when oil mass reaches tipping bucket demarcation weight, first tipping bucket emptying that overturns down, simultaneously second tipping bucket beginning oil-feed of overturning upward, when oil mass reaches tipping bucket demarcation weight, second tipping bucket emptying that overturns down, first tipping bucket overturns upward and again starts oil-feed simultaneously, repeated work like this, by electronic counter, record tipping bucket upset number of times, can convert out well yield in the unit interval.The defect of this Skip meter is: when the less medium of metering gassiness, the medium velocity of discharge is relatively slow, and the liquid in measurement chamber is accumulated too much, thereby easily bucket is flooded in generation, causes tipping bucket to overturn, and cannot guarantee to measure operation and normally carry out.While is due to the Principle Problems of tipping bucket structure, pulsating flow in fluid can have influence on measurement result, its error in dipping is also relatively large, error in dipping is conventionally at 15%-25%, and the volume of tipping bucket tank is also larger, cost of manufacture is relatively high, takes up room also larger, and metered flow scope is also relatively little.
Summary of the invention
For the defect existing in above-mentioned prior art, technical problem to be solved by this invention is to provide a kind ofly can guarantee to measure operation and normally carry out, and measuring accuracy is high, low cost of manufacture, the fluid metering that takes up room little sled and method of measurement thereof.
In order to solve the problems of the technologies described above, a kind of fluid metering sled provided by the present invention, is characterized in that: comprise base, metering cylinder, four-way change-over valve;
Described metering cylinder is column cylinder body, its inner chamber integrated sealing, in the inner chamber of metering cylinder, be provided with a cylinder-piston coaxial with it, this piston and metering cylinder inwall are slidably matched, hermetic seal between piston side face and metering cylinder internal face, the two ends of metering cylinder inner chamber respectively offer one, and for the come in and go out medium access of its inner chamber of medium, one of them medium access one flexible pipe is received the A mouth of four-way change-over valve, and the B mouth of four-way change-over valve is received in another medium access through another flexible pipe;
The two ends of described metering cylinder are respectively equipped with one for triggering the reversing switch of four-way change-over valve commutation, on piston, be equipped with for touching the commutation trigger unit of reversing switch closure, while making piston move to metering cylinder end, the reversing switch that this commutation trigger unit can touch this end is closed;
The LOAD CELLS for monitoring and metering cylinder weight is equipped with in the bottom of described metering cylinder, metering cylinder places on base by LOAD CELLS, base is provided with for gathering the Weighing module of LOAD CELLS sensed data, and the control end of this Weighing module is received two reversing switches.
Further, described metering cylinder is the column cylinder body of a horizontal, and described two medium accesss are separately positioned on the two ends end cap of metering cylinder.
Further, described metering cylinder is a perpendicular column cylinder body of putting, in metering cylinder, be fixed with a vertical mozzle, the pipe shaft of this mozzle passes piston with sliding matching mode, and the joint portion hermetic seal between mozzle pipe shaft and piston, the upper end mouth of pipe of mozzle extends upwardly to the top of metering cylinder inner chamber, and and metering cylinder inner chamber top between leave the gap of passing through for fluid;
In described two medium accesss, one of them medium setup of entrances and exits is on the end cap of the lower end of metering cylinder, and the upper end mouth of pipe of mozzle forms another medium access.
Further, described reversing switch is Hall switch, and described commutation trigger unit is magnet.
The method of measurement of fluid metering sled provided by the present invention, is characterized in that:
Treating to access four-way change-over valve on the conveyance conduit of fluid measured, and utilize reversing switch to control four-way change-over valve intermittence commutation repeatedly, make to get to fluid, by four-way change-over valve, replace from metering cylinder inner chamber two ends, enter metering cylinder inner chamber, make to get the piston that promotes to be built in metering cylinder to fluid and in metering cylinder inner chamber, make reciprocal two-way complete stroke, piston often completes once unidirectional complete stroke in metering cylinder inner chamber, metering cylinder is taken to weight one time, and measured value is deducted to the deadweight of metering cylinder and annex thereof, thereby calculate the weight of metering cylinder inner fluid, in conjunction with piston, complete again the duration of this single direction stroke, extrapolate the flow of fluid,
Wherein, when the one end to fluid from metering cylinder inner chamber enters metering cylinder inner chamber, piston promotes original fluid of retaining in metering cylinder inner chamber and discharges from the other end of metering cylinder inner chamber, and by four-way change-over valve, enters the subsequent delivery pipeline of fluid;
Wherein, the fluid that newly injects metering cylinder inner chamber is mutually isolated by piston and the original fluid of retaining of metering cylinder inner chamber.
Fluid metering sled provided by the invention and method of measurement thereof, according to the weight characteristics of fluid, detect flow, can effectively avoid the interference of fluid air content factor to measurement result, can guarantee to measure operation and normally carry out, and the pulsating flow in fluid can not have influence on measurement result yet, have the advantages that measuring accuracy is high, be particularly suitable for measuring the fluid of gas-liquid mixed, it is less that the volume of metering cylinder also can design, and has low cost of manufacture, and little feature takes up room.
Accompanying drawing explanation
Fig. 1 is the top view of the fluid metering sled of first embodiment of the invention;
Fig. 2 is that the master of the metering cylinder during the fluid metering of first embodiment of the invention is prized looks cut away view;
Fig. 3 is the front view of the fluid metering sled of second embodiment of the invention;
Fig. 4 is that the master of the metering cylinder during the fluid metering of second embodiment of the invention is prized looks cut away view.
The specific embodiment
Below in conjunction with accompanying drawing explanation, embodiments of the invention are described in further detail, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof, all should list protection scope of the present invention in.
As Figure 1-Figure 2, a kind of fluid metering sled that first embodiment of the invention provides, is characterized in that: comprise base (not shown), metering cylinder 11, four-way change-over valve 12;
The column cylinder body that described metering cylinder 11 is horizontal, its inner chamber integrated sealing, in the inner chamber of metering cylinder 11, be provided with a cylinder-piston 13 coaxial with it, this piston 13 is slidably matched with metering cylinder inwall, hermetic seal between piston side face and metering cylinder internal face, on two ends, the left and right end cap of metering cylinder 11, respectively offer one for the come in and go out medium access of its inner chamber of medium, left medium access one flexible pipe 14 is wherein received the A mouth of four-way change-over valve 12, and the B mouth of four-way change-over valve 12 is received in right medium access through another flexible pipe 14;
Described four-way change-over valve 12 is motor operated valve, the two ends, left and right of metering cylinder 11 are respectively equipped with one for triggering the reversing switch 15 of four-way change-over valve 12 commutations, on piston 13, be equipped with for touching the commutation trigger unit 17 of reversing switch 15 closures, when piston 13 moves to metering cylinder inner chamber left end, this commutation trigger unit 17 touches left reversing switch 15 closures, when piston 13 moves to metering cylinder inner chamber right-hand member, this commutation trigger unit 17 touches right reversing switch 15 closures;
The LOAD CELLS 16 for monitoring and metering cylinder weight is equipped with in the bottom of described metering cylinder 11, metering cylinder 11 places on base by LOAD CELLS 16, base is provided with for gathering the Weighing module (not shown) of LOAD CELLS sensed data, and the control end of this Weighing module is received two reversing switches 15.
In first embodiment of the invention, described reversing switch is Hall switch, and described commutation trigger unit is magnet, and described Weighing module is prior art.
In first embodiment of the invention, described four-way change-over valve also can adopt pneumatic operated valve.
In first embodiment of the invention, described commutation trigger unit is a cylinder, commutation trigger unit is arranged on piston with sliding matching mode, and the joint portion hermetic seal of commutation trigger unit and piston, piston movement is during to metering cylinder inner chamber left end, the left end end cap ejection commutation trigger unit of metering cylinder, making it relative piston slides into right part to the right to extend piston right-hand, piston can be moved to metering cylinder left end end cap fits, to guarantee that in metering cylinder, original medium is all discharged, piston movement is during to metering cylinder inner chamber right-hand member, the right-hand member end cap ejection commutation trigger unit of metering cylinder, making it relative piston slides into left part left and extends piston left, piston can be moved to metering cylinder right-hand member end cap fits, to guarantee that in metering cylinder, original medium is all discharged, in other embodiment of the present invention, commutation trigger unit also can be fixed on piston, the trigger unit that commutates in this case should integral body be positioned at piston, or two ends, left and right flush with piston, piston can be moved to metering cylinder two ends end cap fits.
The operating principle of first embodiment of the invention is as follows:
The conveyance conduit of four-way change-over valve access being treated to fluid measured, P mouth, the T mouth of four-way change-over valve dock with fluid-transporting tubing respectively;
If two duties of four-way change-over valve are respectively the first duty, the second duty, four-way change-over valve is when the first duty, and its P mouth is communicated with A mouth, T mouth is communicated with B mouth, four-way change-over valve is when the second duty, and its P mouth is communicated with B mouth, and T mouth is communicated with A mouth;
Under original state, piston is positioned at metering cylinder inner chamber left end, now four-way change-over valve is in the first duty, now fluid flows into from the P mouth of four-way change-over valve, from the A mouth of four-way change-over valve, flow out again, through flexible pipe and left medium access, flow into metering cylinder inner chamber again, thereby promoting piston moves right, meanwhile, in metering cylinder inner chamber, original fluid flows out from right medium access, through flexible pipe, flow into again the B mouth of four-way change-over valve, from the T mouth of four-way change-over valve, flow out again, enter the subsequent delivery pipeline of fluid, when piston moves to metering cylinder inner chamber right-hand member, commutation trigger unit on piston touches the reversing switch of metering cylinder right-hand member, this reversing switch triggers four-way change-over valve commutation immediately, make four-way change-over valve switch to the second duty from the first duty, meanwhile, this reversing switch triggers the sensed data that Weighing module gathers LOAD CELLS, take the current weight of metering cylinder, so far complete a metering cycle from left to right, four-way change-over valve switches to after the second duty, fluid flows into from the P mouth of four-way change-over valve, from the B mouth of four-way change-over valve, flow out again, through flexible pipe and right medium access, flow into metering cylinder inner chamber again, thereby promoting piston is moved to the left, when piston moves to metering cylinder inner chamber left end, commutation trigger unit on piston touches the reversing switch of metering cylinder left end, this reversing switch triggers four-way change-over valve commutation immediately, make four-way change-over valve switch back the first duty from the second duty, meanwhile, this reversing switch triggers the sensed data that Weighing module gathers LOAD CELLS, take the current weight of metering cylinder, so far complete a dextrosinistral metering cycle, start subsequently next metering cycle from left to right,
When Weighing module takes metering cylinder weight at every turn, piston just completes a metering cycle, Weighing module deducts measured value the deadweight of metering cylinder and annex thereof, can know the weight of metering cylinder inner fluid, in conjunction with piston, complete again the duration of this metering cycle, can extrapolate the flow of fluid.
As Figure 3-Figure 4, a kind of fluid metering sled that second embodiment of the invention provides, is characterized in that: comprise base 20, metering cylinder 21, four-way change-over valve 22;
Described metering cylinder 21 is perpendicular column cylinder bodies of putting, its inner chamber integrated sealing, in the inner chamber of metering cylinder 21, be provided with a cylinder-piston 23 coaxial with it, this piston 23 is slidably matched with metering cylinder inwall, hermetic seal between piston side face and metering cylinder internal face, the two ends of metering cylinder inner chamber respectively offer one for the come in and go out medium access of its inner chamber of medium, one of them medium access one flexible pipe 24 is received the A mouth of four-way change-over valve 22, and the B mouth of four-way change-over valve 22 is received in another medium access through another flexible pipe 24;
In described metering cylinder 21, be fixed with a vertical mozzle 29, the pipe shaft of this mozzle 29 passes piston 23 with sliding matching mode, and the joint portion hermetic seal between mozzle pipe shaft and piston, the upper end mouth of pipe of mozzle 29 extends upwardly to the top of metering cylinder inner chamber, and and metering cylinder inner chamber top between leave the gap of passing through for fluid;
In described two medium accesss, one of them medium setup of entrances and exits is on the end cap of the lower end of metering cylinder 21, and the upper end mouth of pipe of mozzle 29 forms another medium access;
Described four-way change-over valve 22 is motor operated valve, the two ends up and down of metering cylinder 21 are respectively equipped with one for triggering the reversing switch 25 of four-way change-over valve 22 commutations, on piston 23, be equipped with for touching the commutation trigger unit 27 of reversing switch 25 closures, when piston 23 moves to metering cylinder inner chamber lower end, this commutation trigger unit 27 touches lower reversing switch 25 closures, when piston 23 moves to metering cylinder inner chamber upper end, this commutation trigger unit 27 touches upper reversing switch 25 closures;
The LOAD CELLS (not shown) for monitoring and metering cylinder weight is equipped with in the bottom of described metering cylinder 21, metering cylinder 21 places on base by LOAD CELLS, base 20 is provided with for gathering the Weighing module (not shown) of LOAD CELLS sensed data, and the control end of this Weighing module is received two reversing switches 25.
In second embodiment of the invention, described reversing switch is Hall switch, and described commutation trigger unit is magnet, and described Weighing module is prior art.
In second embodiment of the invention, described four-way change-over valve also can adopt pneumatic operated valve.
In second embodiment of the invention, described commutation trigger unit is a cylinder, commutation trigger unit is arranged on piston with sliding matching mode, and the joint portion hermetic seal of commutation trigger unit and piston, piston movement is during to metering cylinder inner chamber lower end, the lower end end cap ejection commutation trigger unit of metering cylinder, make it relative piston upward sliding and to top, extend piston top, piston can be moved to metering cylinder lower end end cap fits, to guarantee that in metering cylinder, original medium is all discharged, piston movement is during to metering cylinder inner chamber upper end, the upper end end cap ejection commutation trigger unit of metering cylinder, making it relative piston slides down to bottom and extends piston top, piston can be moved to metering cylinder upper end end cap fits, to guarantee that in metering cylinder, original medium is all discharged, in other embodiment of the present invention, commutation trigger unit also can be fixed on piston, the trigger unit that commutates in this case should integral body be positioned at piston, or upper and lower two ends flush with piston, piston can be moved to metering cylinder two ends end cap fits.
The operating principle of second embodiment of the invention is as follows:
The conveyance conduit of four-way change-over valve access being treated to fluid measured, P mouth, the T mouth of four-way change-over valve dock with fluid-transporting tubing respectively;
If two duties of four-way change-over valve are respectively the first duty, the second duty, four-way change-over valve is when the first duty, and its P mouth is communicated with A mouth, T mouth is communicated with B mouth, four-way change-over valve is when the second duty, and its P mouth is communicated with B mouth, and T mouth is communicated with A mouth;
Under original state, piston is positioned at metering cylinder inner chamber lower end, now four-way change-over valve is in the first duty, now fluid flows into from the P mouth of four-way change-over valve, from the A mouth of four-way change-over valve, flow out again, through flexible pipe, flow into metering cylinder inner chamber again, thereby promoting piston moves up, meanwhile, in metering cylinder inner chamber, original fluid is successively through mozzle, flexible pipe flows into the B mouth of four-way change-over valve, from the T mouth of four-way change-over valve, flow out again, enter the subsequent delivery pipeline of fluid, when piston moves to metering cylinder inner chamber upper end, commutation trigger unit on piston touches the reversing switch of metering cylinder upper end, this reversing switch triggers four-way change-over valve commutation immediately, make four-way change-over valve switch to the second duty from the first duty, meanwhile, this reversing switch triggers the sensed data that Weighing module gathers LOAD CELLS, take the current weight of metering cylinder, so far complete a metering cycle from bottom to up, four-way change-over valve switches to after the second duty, fluid flows into from the P mouth of four-way change-over valve, from the B mouth of four-way change-over valve, flow out again, again successively through flexible pipe, mozzle flows into metering cylinder inner chamber, thereby promoting piston moves down, when piston moves to metering cylinder inner chamber lower end, commutation trigger unit on piston touches the reversing switch of metering cylinder lower end, this reversing switch triggers four-way change-over valve commutation immediately, make four-way change-over valve switch back the first duty from the second duty, meanwhile, this reversing switch triggers the sensed data that Weighing module gathers LOAD CELLS, take the current weight of metering cylinder, so far complete a metering cycle from top to bottom, start subsequently next metering cycle from bottom to up,
When Weighing module takes metering cylinder weight at every turn, piston just completes a metering cycle, Weighing module deducts measured value the deadweight of metering cylinder and annex thereof, can know the weight of metering cylinder inner fluid, in conjunction with piston, complete again the duration of this metering cycle, can extrapolate the flow of fluid.
Various embodiments of the present invention are specially adapted to the metering of oilfield production fluid, can measure the fluid-mixing of oil-water-gas simultaneously, for production fluid amount fluctuation situation, have fine compliance, and the fluid of the certain silt of measurable doping.
Claims (5)
1. a fluid metering sled, is characterized in that: comprise base, metering cylinder, four-way change-over valve;
Described metering cylinder is column cylinder body, its inner chamber integrated sealing, in the inner chamber of metering cylinder, be provided with a cylinder-piston coaxial with it, this piston and metering cylinder inwall are slidably matched, hermetic seal between piston side face and metering cylinder internal face, the two ends of metering cylinder inner chamber respectively offer one, and for the come in and go out medium access of its inner chamber of medium, one of them medium access one flexible pipe is received the A mouth of four-way change-over valve, and the B mouth of four-way change-over valve is received in another medium access through another flexible pipe;
The two ends of described metering cylinder are respectively equipped with one for triggering the reversing switch of four-way change-over valve commutation, on piston, be equipped with for touching the commutation trigger unit of reversing switch closure, while making piston move to metering cylinder end, the reversing switch that this commutation trigger unit can touch this end is closed;
The LOAD CELLS for monitoring and metering cylinder weight is equipped with in the bottom of described metering cylinder, metering cylinder places on base by LOAD CELLS, base is provided with for gathering the Weighing module of LOAD CELLS sensed data, and the control end of this Weighing module is received two reversing switches.
2. fluid metering sled according to claim 1, is characterized in that: described metering cylinder is the column cylinder body of a horizontal, and described two medium accesss are separately positioned on the two ends end cap of metering cylinder.
3. fluid metering according to claim 1 is prized, it is characterized in that: described metering cylinder is a perpendicular column cylinder body of putting, in metering cylinder, be fixed with a vertical mozzle, the pipe shaft of this mozzle passes piston with sliding matching mode, and the joint portion hermetic seal between mozzle pipe shaft and piston, the upper end mouth of pipe of mozzle extends upwardly to the top of metering cylinder inner chamber, and and metering cylinder inner chamber top between leave the gap of passing through for fluid;
In described two medium accesss, one of them medium setup of entrances and exits is on the end cap of the lower end of metering cylinder, and the upper end mouth of pipe of mozzle forms another medium access.
4. according to the fluid metering sled described in claim 1 or 2 or 3, it is characterized in that: described reversing switch is Hall switch, described commutation trigger unit is magnet.
5. the method for measurement that fluid metering according to claim 1 is prized, is characterized in that:
Treating to access four-way change-over valve on the conveyance conduit of fluid measured, and utilize reversing switch to control four-way change-over valve intermittence commutation repeatedly, make to get to fluid, by four-way change-over valve, replace from metering cylinder inner chamber two ends, enter metering cylinder inner chamber, make to get the piston that promotes to be built in metering cylinder to fluid and in metering cylinder inner chamber, make reciprocal two-way complete stroke, piston often completes once unidirectional complete stroke in metering cylinder inner chamber, metering cylinder is taken to weight one time, and measured value is deducted to the deadweight of metering cylinder and annex thereof, thereby calculate the weight of metering cylinder inner fluid, in conjunction with piston, complete again the duration of this single direction stroke, extrapolate the flow of fluid,
Wherein, when the one end to fluid from metering cylinder inner chamber enters metering cylinder inner chamber, piston promotes original fluid of retaining in metering cylinder inner chamber and discharges from the other end of metering cylinder inner chamber, and by four-way change-over valve, enters the subsequent delivery pipeline of fluid;
Wherein, the fluid that newly injects metering cylinder inner chamber is mutually isolated by piston and the original fluid of retaining of metering cylinder inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442111.8A CN104213902B (en) | 2014-09-02 | 2014-09-02 | Fluid metering is prized and its metering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442111.8A CN104213902B (en) | 2014-09-02 | 2014-09-02 | Fluid metering is prized and its metering method |
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| CN104213902A true CN104213902A (en) | 2014-12-17 |
| CN104213902B CN104213902B (en) | 2017-11-24 |
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| CN201410442111.8A Expired - Fee Related CN104213902B (en) | 2014-09-02 | 2014-09-02 | Fluid metering is prized and its metering method |
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| CN105756665A (en) * | 2016-04-19 | 2016-07-13 | 沈阳工业大学通益科技有限公司 | Rotational flow floating type oil well measurement device and method |
| CN109060057A (en) * | 2018-09-30 | 2018-12-21 | 郑州忠林智能科技有限公司 | The volumetric metering station of high degree of automation |
| CN110533145A (en) * | 2019-09-06 | 2019-12-03 | 烟台华力文具有限公司 | A kind of commutation counter |
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| CN110533145B (en) * | 2019-09-06 | 2020-05-26 | 温州市疾彬电子科技有限公司 | Reversing counter |
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| Publication number | Publication date |
|---|---|
| CN104213902B (en) | 2017-11-24 |
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