CN112145485A - Ejector device with adjustable nozzle cross-sectional area - Google Patents
Ejector device with adjustable nozzle cross-sectional area Download PDFInfo
- Publication number
- CN112145485A CN112145485A CN202010928927.7A CN202010928927A CN112145485A CN 112145485 A CN112145485 A CN 112145485A CN 202010928927 A CN202010928927 A CN 202010928927A CN 112145485 A CN112145485 A CN 112145485A
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- nozzle
- shell
- ejector
- adjusting
- gear ring
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- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000011084 recovery Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
- F04F5/04—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing elastic fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
- F04F5/461—Adjustable nozzles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
An ejector device with an adjustable nozzle cross-sectional area comprises an ejector shell, wherein a drainage channel formed by a liquid inlet section, a nozzle with a variable cross-sectional area, a receiving chamber, a mixing chamber and a pressure expansion chamber which are sequentially connected is arranged in the ejector shell; the ejector shell is also provided with a gas inlet section communicated with the receiving chamber; the variable cross-sectional area nozzle comprises a first annular nozzle shell, a second annular nozzle shell, a gear ring and an adjusting valve; the gear ring is arranged between the first nozzle shell and the second nozzle shell; the adjusting valve is arranged on the second nozzle shell, the heads and the tails of the adjusting valves are sequentially embedded with each other to form an annular structure, and the annular structure is positioned in the drainage channel; each adjusting flap is fixedly connected with a linkage rod piece, and the adjusting flaps are connected with the gear ring through the linkage rod pieces; an adjusting knob is arranged outside the ejector shell and is connected with the gear teeth of the gear ring through a rack bar. The invention can change the nozzle aperture of the ejector, so that the ejector can efficiently recover the sleeve gas under different working conditions.
Description
Technical Field
The invention relates to an ejector device, in particular to an ejector device with an adjustable nozzle cross-sectional area.
Background
In the field of oil and gas well development, there are many process flows involving the conversion of wellhead pressure from low pressure to high pressure to low pressure. The low-pressure gas well cannot be effectively output due to too low wellhead pressure, and special equipment and a large amount of energy are required to meet the requirements of the production process; the high-pressure gas well can enter an output pipeline after throttling and pressure reduction so as to avoid the sinking of an oil well pump suction inlet caused by overhigh pressure, and the wellhead pressure is reduced by adopting a method of releasing casing gas regularly in actual production. This practice causes resource waste and environmental pollution. How to recover the discharged casing gas and provide the discharged casing gas for the wellhead to be pressurized has very important significance for reducing production energy consumption and improving energy utilization efficiency.
Most of the existing casing gas recovery devices at home and abroad have great requirements on working environment and need to use external energy. The ejector recovery device has the advantages of no need of external energy, convenience in operation and use, lower equipment processing price and the like, and the recovery cost can be greatly reduced. The traditional ejector geometric structure is fixed, the nozzle sectional area is determined at the beginning of design, and therefore the parameters of the outlet flow of the ejector cannot be adjusted. Under the working condition of design, this kind of form ejector can reach highest work efficiency, but changes when working condition, and the work efficiency of ejector will descend, even can not normally work.
Disclosure of Invention
In order to solve the problems, the invention provides an ejector device with an adjustable nozzle cross-sectional area, so that the cross-sectional area of the ejector device can be adjusted under different working conditions, the aim of improving the working efficiency of the ejector is fulfilled, and the recovery efficiency of casing gas is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
an ejector device with an adjustable nozzle cross-sectional area comprises an ejector shell, wherein a through drainage channel is arranged in the ejector shell, and the drainage channel comprises a liquid inlet section, a nozzle with a variable cross-sectional area, a receiving chamber, a mixing chamber and a pressure expansion chamber which are sequentially connected; the ejector shell is also provided with a gas inlet section which is communicated with the receiving chamber;
the variable cross-sectional area nozzle comprises a first annular nozzle shell, a second annular nozzle shell, a gear ring and an adjusting valve; the gear ring is arranged between the first nozzle shell and the second nozzle shell; gear teeth are arranged on the gear ring;
the adjusting valve is arranged on the second nozzle shell, the heads and the tails of the adjusting valves are sequentially embedded with each other to form an annular structure, and the annular structure is positioned in the drainage channel; each adjusting flap is fixedly connected with a linkage rod piece, and the adjusting flaps are connected with the gear ring through the linkage rod pieces;
an adjusting knob is arranged outside the ejector shell and is connected with the gear teeth of the gear ring through a rack bar.
Furthermore, the mixing chamber is in a circular truncated cone shape, and the radial diameter of the mixing chamber is gradually reduced along the flow direction; the pressure-expanding chamber is in a circular truncated cone shape, and the radial diameter flow is gradually enlarged along the radial direction.
Furthermore, first columnar structures are uniformly arranged on the inner edge of the gear ring at intervals, the number of the first columnar structures is the same as that of the adjusting petals, and the linkage rod pieces are fixedly connected with the first columnar structures.
Furthermore, a second columnar structure is arranged inside the second nozzle shell, the number of the second columnar structures is the same as that of the adjusting petals, and the adjusting petals are connected with the second columnar structures through connecting holes.
Furthermore, a semicircular hole is formed in the side of the first nozzle shell and the side of the second nozzle shell, and the toothed bar is connected with the gear teeth on the gear ring in a matched mode through the semicircular hole.
Further, the regulating valve is of a fan-shaped structure.
The invention has the beneficial effects that:
the invention can change the nozzle aperture of the ejector, so that the ejector can efficiently recover the sleeve gas under different working conditions; the device can effectively solve the problem of recovering the casing gas of the oil well under the condition of no external energy, realize the high-efficiency recovery of the casing gas, solve the gas lock phenomenon, improve the yield of the oil well, and reduce the environmental pollution and the resource waste caused by the emptying or ignition treatment of the casing gas.
Drawings
Fig. 1 is a schematic cross-sectional view of an ejector according to the present invention along the extension of a flow-directing passage, with the direction of the arrows indicating the direction of flow.
Fig. 2 is an enlarged view of a portion of the variable cross-sectional area nozzle of the eductor of fig. 1.
FIG. 3 is a schematic diagram of the positional relationship of the components of the variable cross-sectional area nozzle of the ejector.
FIG. 4 is a schematic cross-sectional view of an eductor variable cross-sectional area nozzle.
Fig. 5 is an external view of the regulating flap.
FIG. 6 is a schematic cross-sectional view of the eductor variable cross-sectional area nozzle with the adjustment knob and rack bar outside the housing.
Fig. 7 is a schematic view of the engagement of the toothed bar with the gear ring.
Fig. 8 is a schematic elevation view of a gear ring.
Fig. 9 is a three-view and transverse cross-sectional schematic view of a gear ring.
Fig. 10 is an external view of the gear ring.
FIG. 11 is a three-dimensional and cross-sectional view of a first nozzle housing.
Fig. 12 is a three-dimensional view and a sectional view of the second nozzle housing.
Wherein: the device comprises an ejector shell 1, a drainage channel 2, a liquid inlet section 3, a gas inlet section 4, a receiving chamber 5, a mixing chamber 6, a diffusion chamber 7, a nozzle with a variable cross-sectional area 8, a nozzle main body 9, a nozzle shell I10, a nozzle shell II 11, a gear ring 12, an adjusting valve 13, a linkage rod piece 14, an adjusting knob 15, a toothed bar 16, gear teeth 17, a first columnar structure 18, a second columnar structure 19, a connecting hole 20 and a semicircular hole 21.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, an ejector device with an adjustable nozzle cross-sectional area comprises an ejector shell 1, wherein a through flow guide channel 2 is arranged in the ejector shell 1, and the flow guide channel 2 comprises a liquid inlet section 3, a nozzle with a variable cross-sectional area 8, a receiving chamber 5, a mixing chamber 6 and a diffusion chamber 7 which are sequentially connected; the ejector shell 1 is further provided with a gas inlet section 4, and the gas inlet section 4 is communicated with the receiving chamber 5. The mixing chamber 6 is in a circular truncated cone shape, and the radial diameter of the mixing chamber gradually decreases along the flow direction; the pressure expansion chamber 7 is in a circular truncated cone shape, and the radial diameter flow is gradually increased along the radial direction.
As shown in fig. 2 to 3, the variable cross-sectional area nozzle 8 includes a first annular nozzle housing 10, a second annular nozzle housing 11, a gear ring 12, and an adjustment flap 13; the gear ring 12 is arranged between the first nozzle shell 10 and the second nozzle shell 11; the gear ring 12 has gear teeth 17.
As shown in fig. 2 to 5, the regulating flaps 13 are mounted on the second nozzle shell 11, and a plurality of regulating flaps 13 are sequentially embedded with each other head and tail to form an annular structure, and the annular structure is located in the drainage channel 2; each adjusting flap 13 is fixedly connected with a linkage rod member 14, and the adjusting flap 13 is connected with the gear ring 12 through the linkage rod member 14; the regulating valve 13 is in a fan-shaped structure.
As shown in fig. 6 to 7, an adjusting knob 15 is arranged outside the ejector shell 1, and the adjusting knob 15 is connected with the gear teeth 17 of the gear ring 12 through a rack bar 16.
As shown in fig. 8 to 10, first columnar structures 18 are uniformly arranged in the gear ring 12 along the circumference at intervals, the number of the first columnar structures 18 is the same as that of the adjustment flaps 13, and the linkage rod members 14 are fixedly connected with the first columnar structures 18.
As shown in fig. 12, the second nozzle housing 11 is provided with second cylindrical structures 19, the number of the second cylindrical structures 19 is the same as that of the regulating petals 13, and the regulating petals 13 are connected with the second cylindrical structures through connecting holes 20.
As shown in fig. 4, 6, 11 and 12, semicircular holes 21 are formed at the sides of the first nozzle housing 10 and the second nozzle housing 11, and the rack bar 16 is in fit connection with the gear teeth 17 on the gear ring 12 through the semicircular holes 21.
The invention provides an ejector device with an adjustable nozzle cross-sectional area, which is used for recovering casing gas in oil field production, and the working principle of the ejector device is described by combining the accompanying drawings:
as shown in fig. 1, in the working state, crude oil produced by an oil well flows out of an oil outlet pipeline, enters the device through the liquid inlet section 3, flows through the nozzle 8 with the variable cross-sectional area to reach the receiving chamber 5, the pressure of the drainage channel 2 is reduced at the moment due to the fact that pressure energy is converted into speed energy, a vacuum negative pressure cavity is formed around the nozzle 8 with the variable cross-sectional area, injected gas, namely casing gas enters the mixing chamber 6 from the gas inlet section 4 to be mixed with the crude oil, then enters the pressure expansion chamber 7, the crude oil and the casing gas reach a stable flowing state after mixed pressure expansion of the pressure expansion chamber 7, and then enter the pipeline for transportation and recycling.
The method of changing the nozzle cross-sectional area is described below:
the cross-sectional area of the variable cross-sectional area nozzle 8 can be changed by the adjusting knob 15, the adjusting knob 15 is rotated to drive the toothed bar 16, gear teeth 17 are arranged between the toothed bar 16 and the gear ring 12, so that the gear ring 12 is driven to rotate, the adjusting flap 13 is simultaneously fixed on the gear ring 12 and the nozzle shell II 11, the gear ring 12 rotates to drive the adjusting flap 13 to rotate and change the relative position, the cross-sectional area of the nozzle can be changed, the function of changing the size of the cross-sectional area of the nozzle is achieved, the size of vacuum negative pressure at the mixing chamber 5 and working parameters such as outlet flow and the like can be changed by changing the cross-sectional area of the nozzle, so that the ejector can reach the optimal working state under different.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (6)
1. The utility model provides a nozzle cross sectional area adjustable ejector device which characterized in that: the jet type mixing device comprises an ejector shell (1), wherein a through drainage channel (2) is arranged in the ejector shell (1), and the drainage channel (2) comprises a liquid inlet section (3), a nozzle (8) with a variable cross-sectional area, a receiving chamber (5), a mixing chamber (6) and a diffusion chamber (7) which are sequentially connected; the ejector shell (1) is also provided with a gas inlet section (4), and the gas inlet section (4) is communicated with the receiving chamber (5);
the variable cross-section area nozzle (8) comprises a first annular nozzle shell (10), a second annular nozzle shell (11), a gear ring (12) and an adjusting valve (13); the gear ring (12) is arranged between the first nozzle shell (10) and the second nozzle shell (11); the gear ring (12) is provided with gear teeth (17);
the adjusting valves (13) are arranged on the second nozzle shell (11), the heads and the tails of the adjusting valves (13) are sequentially embedded with each other to form an annular structure, and the annular structure is positioned in the drainage channel (2); each adjusting flap (13) is fixedly connected with a linkage rod piece (14), and the adjusting flaps (13) are connected with the gear ring (12) through the linkage rod pieces (14);
an adjusting knob (15) is arranged outside the ejector shell (1), and the adjusting knob (15) is connected with gear teeth (17) of the gear ring (12) through a rack bar (16).
2. The ejector device of claim 1, wherein: the mixing chamber (6) is in a circular truncated cone shape, and the radial diameter of the mixing chamber is gradually reduced along the flow direction; the pressure expansion chamber (7) is in a circular truncated cone shape, and the radial diameter flow is gradually increased along the radial direction.
3. The ejector device of claim 1, wherein: first columnar structures (18) are uniformly arranged in the gear ring (12) at intervals along the circumference, the number of the first columnar structures (18) is the same as that of the adjusting valves (13), and the linkage rod piece (14) is fixedly connected with the first columnar structures (18).
4. The ejector device of claim 1, wherein: and a second cylindrical structure (19) is arranged inside the second nozzle shell (11), the number of the second cylindrical structures (19) is the same as that of the adjusting petals (13), and the adjusting petals (13) are connected with the second cylindrical structure through connecting holes (20).
5. The ejector device of claim 1, wherein: and a semicircular hole (21) is formed in the side of the first nozzle shell (10) and the side of the second nozzle shell (11), and the toothed bar (16) is connected with the gear teeth (17) on the gear ring (12) in a matched mode through the semicircular hole (21).
6. The ejector device of claim 1, wherein: the adjusting valve (13) is of a fan-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928927.7A CN112145485A (en) | 2020-09-07 | 2020-09-07 | Ejector device with adjustable nozzle cross-sectional area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928927.7A CN112145485A (en) | 2020-09-07 | 2020-09-07 | Ejector device with adjustable nozzle cross-sectional area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112145485A true CN112145485A (en) | 2020-12-29 |
Family
ID=73891044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010928927.7A Pending CN112145485A (en) | 2020-09-07 | 2020-09-07 | Ejector device with adjustable nozzle cross-sectional area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112145485A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB607866A (en) * | 1945-05-18 | 1948-09-07 | Anglo Iranian Oil Co Ltd | Improvements relating to valves |
| CN202081866U (en) * | 2011-04-06 | 2011-12-21 | 中国石油大学(华东) | Spray drainage type sleeve gas reclaiming device |
| CN102747987A (en) * | 2012-07-04 | 2012-10-24 | 刘庆敏 | Sleeve gas collection device and method |
| CN104100238A (en) * | 2013-04-11 | 2014-10-15 | 中国石油大学(华东) | Ejection pressurizing type sleeve gas recovery device |
| CN204283364U (en) * | 2014-12-01 | 2015-04-22 | 胜利油田瑞特机械制造有限责任公司 | A kind of casing gas comprehensive collection device |
| EP2988044A1 (en) * | 2014-08-18 | 2016-02-24 | Kyle P Daniels | Shutter valve with pivot arms |
| CN207212311U (en) * | 2017-05-20 | 2018-04-10 | 胜利油田瑞特机械制造有限责任公司 | A kind of injecting type casing gas recovering device |
| CN208294498U (en) * | 2018-05-02 | 2018-12-28 | 延长油田股份有限公司志丹采油厂 | A kind of tapping equipment of adjustable well mouth of oil well casing gas |
| CN209752647U (en) * | 2019-02-26 | 2019-12-10 | 江苏沃泰冶金设备有限公司 | Rotary jet mixer |
| CN210068097U (en) * | 2018-12-17 | 2020-02-14 | 中国石油天然气股份有限公司 | Casing gas recovery device |
| KR20200032306A (en) * | 2018-09-17 | 2020-03-26 | 동아대학교 산학협력단 | Aperture Type Automatic Flow Control Valve |
| CN111255904A (en) * | 2020-02-20 | 2020-06-09 | 金陵科技学院 | Section-adjustable flow limiting valve |
-
2020
- 2020-09-07 CN CN202010928927.7A patent/CN112145485A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB607866A (en) * | 1945-05-18 | 1948-09-07 | Anglo Iranian Oil Co Ltd | Improvements relating to valves |
| CN202081866U (en) * | 2011-04-06 | 2011-12-21 | 中国石油大学(华东) | Spray drainage type sleeve gas reclaiming device |
| CN102747987A (en) * | 2012-07-04 | 2012-10-24 | 刘庆敏 | Sleeve gas collection device and method |
| CN104100238A (en) * | 2013-04-11 | 2014-10-15 | 中国石油大学(华东) | Ejection pressurizing type sleeve gas recovery device |
| EP2988044A1 (en) * | 2014-08-18 | 2016-02-24 | Kyle P Daniels | Shutter valve with pivot arms |
| CN204283364U (en) * | 2014-12-01 | 2015-04-22 | 胜利油田瑞特机械制造有限责任公司 | A kind of casing gas comprehensive collection device |
| CN207212311U (en) * | 2017-05-20 | 2018-04-10 | 胜利油田瑞特机械制造有限责任公司 | A kind of injecting type casing gas recovering device |
| CN208294498U (en) * | 2018-05-02 | 2018-12-28 | 延长油田股份有限公司志丹采油厂 | A kind of tapping equipment of adjustable well mouth of oil well casing gas |
| KR20200032306A (en) * | 2018-09-17 | 2020-03-26 | 동아대학교 산학협력단 | Aperture Type Automatic Flow Control Valve |
| CN210068097U (en) * | 2018-12-17 | 2020-02-14 | 中国石油天然气股份有限公司 | Casing gas recovery device |
| CN209752647U (en) * | 2019-02-26 | 2019-12-10 | 江苏沃泰冶金设备有限公司 | Rotary jet mixer |
| CN111255904A (en) * | 2020-02-20 | 2020-06-09 | 金陵科技学院 | Section-adjustable flow limiting valve |
Non-Patent Citations (1)
| Title |
|---|
| 邹根宝: "《采油工程》", 31 October 1998, 石油工业出版社 * |
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Application publication date: 20201229 |
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