CN108180000B - Automatic-control anti-backflow one-way water injection valve - Google Patents
Automatic-control anti-backflow one-way water injection valve Download PDFInfo
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- CN108180000B CN108180000B CN201711476683.8A CN201711476683A CN108180000B CN 108180000 B CN108180000 B CN 108180000B CN 201711476683 A CN201711476683 A CN 201711476683A CN 108180000 B CN108180000 B CN 108180000B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000002347 injection Methods 0.000 title claims abstract description 46
- 239000007924 injection Substances 0.000 title claims abstract description 46
- 239000007921 spray Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000011159 matrix material Substances 0.000 claims description 2
- 210000002445 nipple Anatomy 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000002265 prevention Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/04—Ball valves
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Check Valves (AREA)
- Nozzles (AREA)
Abstract
An automatic control backflow-preventing one-way water injection valve belongs to the technical field of water injection valves. The method is characterized in that: including top connection (1), lower clutch (5) and valve body (3), install valve body (3) between top connection (1) and lower clutch (5), valve body (3) divide into inner tube (301) and urceolus (302) of inside and outside suit, install in inner tube (301) inner chamber valve ball (2), valve seat (7) are connected to inner tube (301) bottom. The opening of the valve is automatically adjusted by the hydraulic power borne by the valve ball, water is injected in a non-pressure-difference throttling state, the valve ball falls back to the valve seat by the self gravity of the valve ball after the injection is stopped, and the automatic control of the opening of the valve is achieved according to the hydraulic power and the self gravity of the valve ball. The liquid outlet is provided with the spray pipe, so that the pressure of liquid to the inner cylinder and the valve ball after stopping injection can be effectively reduced while liquid transportation is promoted, thus effectively forming pressure difference, realizing anti-backflow under the action of the spray pipe, thoroughly preventing liquid backflow, and having small throttling loss and small pressure loss.
Description
Technical Field
An automatic control backflow-preventing one-way water injection valve belongs to the technical field of water injection valves.
Background
The water distributor matched with the tubular column of the existing separated layer water injection process applied to the oil field injects the incoming water in the oil pipe into the stratum, the commonly used water distributors have 2 types of eccentric and hollow water distributors, for a high-pressure water injection layer, when the eccentric water distributor is adopted, because the water distributor can pass through water from inside to outside and from outside to inside, the anti-backflow function is not provided, the water outlet hole is easily blocked by the dirt which is backflow out from the stratum under high pressure after the water injection is stopped, the later stage water injection and the service life of the tubular column are influenced, the hollow water distributor is externally provided with a throttle valve which can only pass through water from inside to outside in a one-way, but the throttling is manually controlled during the water injection, a large amount of valve nozzle throttling needs to be overcome, the incoming water pressure loss is caused, particularly for the high-pressure water injection layer, the pressure.
At present, aiming at the problems, the following technical schemes are mainly adopted:
the first scheme is as follows: chinese patent CN106468155A discloses a "no-throttle one-way water injection valve". The backflow prevention means that the opening and closing of a water injection channel are realized by means of the gravity of the ball valve, and water is injected into a high-pressure layer under the condition of no pressure loss. The method does not consider the impact on the valve ball and the inner cylinder, and the like, and the method cannot actually enable the valve ball and the inner cylinder to have an excellent backflow prevention function.
Scheme II: chinese patent No. cn103196261a discloses a throttle check valve installed between a connection pipe and a main capillary tube of a home air conditioner for controlling unidirectional conduction of refrigerant, the throttle valve comprising: the valve body is provided with a throttling port and a conducting port; the valve seat is arranged in the valve body and is provided with a valve seat cavity, the valve seat is connected with the valve body in a necking sealing way, and the waist part of the valve seat is provided with a plurality of through holes; the valve core is arranged in the valve seat cavity, is used for sliding back and forth along the valve seat cavity to block or keep away from the through hole, and is provided with a valve core head and a throttling hole penetrating through the valve core, wherein a throttling opening is formed in the end part of the valve seat, a flow channel is formed between the valve body and the valve seat, refrigerant participating in refrigeration is input from the conducting port, the valve core is pushed away from the through hole, flows out from the valve seat cavity through the through hole, and is output from the throttling port after passing through the flow channel; the valve core blocks the through hole, performs auxiliary throttling through the throttling hole, and outputs the auxiliary throttling from the conducting port. The anti-backflow automatic control throttle valve is completely different from the anti-backflow automatic control throttle valve in the aspects of target function and working principle.
The third scheme is as follows: CN203614841U utility model patent [3] has designed a one-way throttle valve, relates to the flow control field, has solved the problem that prior art structure is complicated, easily blocks up. The valve comprises a valve body and a valve sleeve sleeved on the valve body, a through valve cavity is arranged in the valve body, a one-way control valve core is arranged in the valve cavity, a throttling port is arranged between the valve sleeve and the valve body, when fluid flows from the throttling direction, the valve sleeve is rotated to change the throttling area of the throttling port, so that the flow of the fluid is controlled, and when the fluid flows reversely, the valve core is opened to realize the one-way circulation of the fluid. The throttle valve is simple in technical structure design and convenient to machine and assemble; the throttling control mode is simple and easy to implement, continuous flow regulation can be realized, and when the fluid flows in the forward direction, the fluid passing through the throttling opening between the valve body and the valve sleeve can play a self-purification role on the throttling valve, so that the throttling valve can be effectively prevented from being blocked while the one-way circulation of the fluid is realized, and the service life is prolonged. The anti-backflow automatic control valve automatically controls the flow, and the anti-backflow automatic control valve are different in nature.
The flow of the throttle valve is adjusted through the throttle valve, so that the pressure loss of incoming water can be caused in a high-pressure water injection layer, and the water absorption capacity of a stratum is further reduced. Obviously, such a throttle valve is not beneficial to the water injection development of the high-pressure layer. Other technical solutions are described in some other documents, but all of them have a large impact and a large pressure loss in a high-pressure high-flow system.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the anti-backflow one-way water injection valve overcomes the defects of the prior art, automatically controls the opening of the valve, and realizes the injection of a downhole high-pressure layer under the condition of small pressure loss and the automatic control of stratum backflow after the injection is stopped.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an automatic prevent returning and tell one-way water injection valve which characterized in that: including top connection, lower clutch and valve body and install the valve ball in the valve body, install the valve body between top connection and the lower clutch, the valve body divide into inner tube and the urceolus of inside and outside suit, leave the circulation chamber between inner tube and the urceolus, the valve ball is installed at the inner tube inner chamber, the disk seat is connected to the inner tube bottom, sets up the through-hole of radially seting up on the inner tube, through the inner chamber of this through-hole UNICOM inner tube with the liquid outlet that the level set up is equipped with on the valve body circulates the chamber, is equipped with the.
The invention changes the structure and the valve opening mode of the traditional water injection one-way valve, the valve opening is automatically adjusted by the hydraulic power borne by the valve ball, the valve ball is pushed to the upper end of the water outlet hole by the hydraulic power in the normal water injection state, water is injected in the non-differential throttling state, the valve ball falls back to the valve seat by the self gravity of the valve ball after stopping injection, and the automatic control of the valve opening is achieved according to the hydraulic power and the self gravity of the valve ball. The liquid outlet is provided with the spray pipe, the speed-increasing and pressure-reducing effects are achieved, pressure difference is formed in the front and back of the spray pipe, the pressure of liquid on the inner barrel and the valve ball after stopping injection can be effectively reduced while liquid transportation is promoted, accordingly, the pressure difference is effectively formed, backflow is prevented under the effect of the spray pipe, meanwhile, automatic control over the opening degree of the valve is achieved by means of water power borne by the valve ball, liquid backflow is thoroughly prevented, the automatic opening control valve has the advantages of being flexible in design, low in cost and the like, meanwhile, the automatic opening control valve is achieved, throttling loss is small.
The inner cylinder is arranged in an inverted U shape, an ellipsoid is arranged at the top in the inner cylinder, and the top surface of the valve seat is an ellipsoid with the same radian. The valve seat working part is in an ellipsoidal shape to ensure that the contact between the valve seat and the valve ball is not point contact, and the inner cylinder is provided with a through hole which is radially communicated and is used for communicating the inner cavity of the inner cylinder and a channel between the inner cylinder and the outer cylinder to ensure the normal circulation of fluid.
The diameter of the opening on the top surface of the valve seat is smaller than that of the valve ball.
The valve ball is spherical or ellipsoidal.
And a short section is arranged between the lower part of the inner cylinder and the valve seat, and the inner cylinder is communicated with the valve seat through the short section.
The outside of the valve seat is provided with a limit ring, the upper part of the limit ring is connected with a short section, and the lower part of the limit ring is connected with a lower joint.
The spray pipe is arranged in a horn shape with the pipe diameter gradually contracting from inside to outside.
The spray pipes are arranged in a plurality of rectangular centralized arrangement on one side of the middle part of the valve body. Only the liquid outlet nozzle series is arranged on the local part, all the sub-nozzles are gradually reduced nozzles, pressure difference is formed inside and outside the nozzles, pressure is reduced under the action of the nozzles along liquid outflow pressure, if water injection is stopped, liquid backflow cannot occur under the action of the pressure difference, and the backflow prevention function is achieved.
The spray pipes are arranged in a plurality of annular matrixes and are arranged on the outer wall of the valve body. The annular convergent nozzle series is arranged, the principle of the scheme is as shown in the foregoing, the pressure difference can be increased, and the anti-backflow function is more effectively realized.
The spray pipe is an annular pipe fixed on the valve body. The liquid outlet is an annular spray pipe, and this scheme designs the spray pipe for continuous annular spray pipe, can guarantee certain intensity and rigidity, and under the condition that satisfies great pressure differential, and then guarantee certain stability.
Compared with the prior art, the invention has the beneficial effects that:
the invention changes the structure and the valve opening mode of the traditional water injection one-way valve, the valve opening is automatically adjusted by the hydraulic power borne by the valve ball, the valve ball is pushed to the upper end of the water outlet hole by the hydraulic power in the normal water injection state, water is injected in the non-differential throttling state, the valve ball falls back to the valve seat by the self gravity of the valve ball after stopping injection, and the automatic control of the valve opening is achieved according to the hydraulic power and the self gravity of the valve ball. The liquid outlet is provided with the spray pipe, the speed-increasing and pressure-reducing effects are achieved, pressure difference is formed in the front and back of the spray pipe, the pressure of liquid on the inner barrel and the valve ball after stopping injection can be effectively reduced while liquid transportation is promoted, accordingly, the pressure difference is effectively formed, backflow is prevented under the effect of the spray pipe, meanwhile, automatic control over the opening degree of the valve is achieved by means of water power borne by the valve ball, liquid backflow is thoroughly prevented, the automatic opening control valve has the advantages of being flexible in design, low in cost and the like, meanwhile, the automatic opening control valve is achieved, throttling loss is small.
Drawings
Fig. 1 is a schematic diagram of the internal structure of an automatically controlled backflow-preventing one-way water injection valve.
Fig. 2 is a structural schematic diagram of a locally arranged spray pipe of an automatically controlled anti-backflow one-way water injection valve.
Fig. 3 is a schematic side view of the spout.
Fig. 4 is a structural schematic diagram of an automatically controlled annular uniform spray pipe of the anti-backflow one-way water injection valve.
FIG. 5 is a schematic structural view of an automatically controlled anti-backflow one-way water injection valve with a nozzle tube being a ring tube.
The device comprises a pipe body 1, an upper joint 2, a valve ball 3, a valve body 301, an inner cylinder 302, an outer cylinder 4, a short section 5, a lower joint 6, a limiting ring 7, a valve seat 8 and a spray pipe.
Detailed Description
FIGS. 1 to 3 illustrate preferred embodiments of the present invention, and the present invention will be further described with reference to FIGS. 1 to 5.
Referring to figure 1: the utility model provides an automatic prevent returning and tell one-way water injection valve, includes top connection 1, lower clutch 5 and valve body 3 and installs the valve ball 2 in valve body 3, installs valve body 3 between top connection 1 and the lower clutch 5, and valve body 3 divide into inner tube 301 and urceolus 302 of inside and outside suit, leaves the circulation chamber between inner tube 301 and the urceolus 302, and valve ball 2 is installed at inner tube 301 inner chamber, and disk seat 7 is connected to inner tube 301 bottom, sets up the through-hole of radially seting up on the inner tube 301, through this through-hole UNICOM inner tube 301 the inner chamber with the circulation chamber.
The upper joint 1 is connected with the integrated valve body 3, the valve ball 2 is arranged in the inner cylinder 301, the short section 4 is connected with the bridge type main body, the valve seat 7 is arranged in the limit ring 6, then the limit ring 6 and the short section 4 are connected, and finally the lower joint 5 is connected. This water injection valve adopts the design of inner tube 301 and urceolus 302 of integral type structure, and wherein inner tube 301 is a lower extreme open-ended type of falling U structure, and this structure top is the ellipsoid, installs valve seat 7 in the bottom of inner tube 301, and the internal diameter of valve seat 7 is less than the diameter of the valve ball 2 of placing in inner tube 301, and valve seat 7 working part is the ellipsoid to guarantee that valve seat 7 and valve ball 2 contact are not the point contact, inner tube 301 sets up the through-hole that radially link up and is used for the circulation chamber between intercommunication inner tube 301 inner chamber and the interior urceolus.
The inner cylinder 301 is arranged in an inverted U shape, an ellipsoid is arranged at the inner top of the inner cylinder 301, and the top surface of the valve seat 7 is an ellipsoid with the same radian. The top surface opening diameter of the valve seat 7 is smaller than the diameter of the valve ball 2. The valve ball 2 is spherical or ellipsoidal.
Preferably, a short joint 4 is arranged between the lower part of the inner cylinder 301 and the valve seat 7, and the inner cylinder 301 is communicated with the valve seat 7 through the short joint 4. The outside of valve seat 7 is equipped with spacing ring 6, connects nipple joint 4 through 6 upper portions of spacing ring, connects lower clutch 5 through the lower part of spacing ring 6.
Be equipped with the liquid outlet of level setting on the valve body 3, be equipped with spray tube 8 on the liquid outlet, as shown in fig. 3, spray tube 8 is the tubaeform setting that the pipe diameter is indent gradually from inside to outside, and mach number Ma < 1.
As shown in fig. 2, a plurality of nozzles 8 are provided, and the plurality of nozzles 8 are arranged in a rectangular shape and concentrated on one side of the middle part of the valve body 3. Only set up liquid outlet spray tube 8 series in local, a plurality of spray tubes 8 are the convergent spray tube, form pressure differential inside and outside spray tube 8, along liquid outflow pressure under the effect of spray tube 8, pressure reduction, if stop the water injection, under the effect of pressure differential, can not take place liquid refluence, realize preventing returning and spitting the function.
The nozzles 8 have three arrangements, and the purpose of the arrangement is to form a pressure difference and prevent liquid from flowing backwards. The specific spray pipe setting scheme is as follows:
as shown in fig. 4, the plurality of nozzles 8 are provided, and the plurality of nozzles 8 are arranged in an annular matrix on the outer wall of the valve body 3. The annular convergent nozzle series is arranged, the principle of the scheme is as shown in the foregoing, the pressure difference can be increased, and the anti-backflow function is more effectively realized.
As shown in fig. 5, the nozzle 8 is an annular pipe fixed to the valve body 3. The liquid outlet is an annular spray pipe 8, and this scheme designs spray pipe 8 into continuous annular spray pipe 8, can guarantee certain intensity and rigidity, under the condition that satisfies great pressure differential, still guarantees certain stability.
Under normal water injection state, valve ball 2 is pushed to apopore upper end by water conservancy, water injection under the no pressure difference throttle state, after stopping annotating, relies on valve ball 2 self gravity to fall back to disk seat 7, according to water conservancy and valve ball 2 self gravity, reaches valve aperture automatic control. According to the invention, the spray pipe 8 is adopted to realize the backflow prevention function, the spray pipe 8 is arranged at the liquid outlet to play a role in increasing speed and reducing pressure, and pressure difference is formed between the front part and the rear part of the spray pipe 8, so that the pressure of liquid on the inner cylinder 301 and the valve ball 2 after stopping injection can be effectively reduced while liquid transportation is promoted.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides an automatic prevent returning and tell one-way water injection valve which characterized in that: the valve comprises an upper joint (1), a lower joint (5), a valve body (3) and a valve ball (2) arranged in the valve body (3), wherein the valve body (3) is arranged between the upper joint (1) and the lower joint (5), the valve body (3) is divided into an inner barrel (301) and an outer barrel (302) which are sleeved with each other, a circulation cavity is reserved between the inner barrel (301) and the outer barrel (302), the valve ball (2) is arranged in the inner barrel (301), the bottom of the inner barrel (301) is connected with a valve seat (7), a through hole which is radially formed is formed in the inner barrel (301), the inner cavity of the inner barrel (301) is communicated with the circulation cavity through the through hole, a liquid outlet which is horizontally arranged is formed in the valve body (3), and a;
the inner cylinder (301) is arranged in an inverted U shape, an ellipsoid is arranged at the inner top of the inner cylinder (301), and the top surface of the valve seat (7) is an ellipsoid with the same radian;
a short section (4) is arranged between the lower part of the inner cylinder (301) and the valve seat (7), and the inner cylinder (301) is communicated with the valve seat (7) through the short section (4);
the diameter of the opening on the top surface of the valve seat (7) is smaller than that of the valve ball (2);
the valve ball (2) is spherical or ellipsoidal;
the spray pipe (8) is arranged in a horn shape with the pipe diameter gradually shrinking from inside to outside.
2. The automatic control backflow-preventing one-way water injection valve according to claim 1, characterized in that: the outside of disk seat (7) be equipped with spacing ring (6), connect nipple joint (4) through spacing ring (6) upper portion, connect lower clutch (5) through the lower part of spacing ring (6).
3. The automatic control backflow-preventing one-way water injection valve according to claim 1, characterized in that: the spray pipes (8) are arranged in a plurality of numbers, and the spray pipes (8) are arranged on one side of the middle part of the valve body (3) in a rectangular centralized manner.
4. The automatic control backflow-preventing one-way water injection valve according to claim 1, characterized in that: the spray pipes (8) are arranged in a plurality of numbers, and the spray pipes (8) are arranged on the outer wall of the valve body (3) in an annular matrix.
5. The automatic control backflow-preventing one-way water injection valve according to claim 1, characterized in that: the spray pipe (8) is an annular pipe fixed on the valve body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476683.8A CN108180000B (en) | 2017-12-29 | 2017-12-29 | Automatic-control anti-backflow one-way water injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476683.8A CN108180000B (en) | 2017-12-29 | 2017-12-29 | Automatic-control anti-backflow one-way water injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108180000A CN108180000A (en) | 2018-06-19 |
| CN108180000B true CN108180000B (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711476683.8A Expired - Fee Related CN108180000B (en) | 2017-12-29 | 2017-12-29 | Automatic-control anti-backflow one-way water injection valve |
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| Country | Link |
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| CN (1) | CN108180000B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533216A (en) * | 2018-05-23 | 2018-09-14 | 中国石油集团渤海钻探工程有限公司 | Liquid switch valve is returned in a kind of anti-tubing string |
| CN110318720B (en) * | 2019-07-19 | 2024-04-30 | 西安思坦仪器股份有限公司 | Water distributor of wide-range orifice plate flowmeter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0100140B1 (en) * | 2001-01-23 | 2010-10-19 | pneumatic pump valve with central body venturi. | |
| CN202140072U (en) * | 2011-07-06 | 2012-02-08 | 刘防修 | Self-exciting vibration water injector |
| CN203022691U (en) * | 2013-01-15 | 2013-06-26 | 中国石油化工股份有限公司 | Bridge type anti-return sand setting device |
| CN106468155A (en) * | 2015-08-21 | 2017-03-01 | 中国石油化工股份有限公司 | One kind no throttles one way entrapped water valve |
| CN205314943U (en) * | 2016-01-06 | 2016-06-15 | 西南石油大学 | Super deep water horizontal well prevent sinking bits tool. s |
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2017
- 2017-12-29 CN CN201711476683.8A patent/CN108180000B/en not_active Expired - Fee Related
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| CN108180000A (en) | 2018-06-19 |
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