CN107314868A - A kind of integrated valve plate suitable for casing gas device for detecting sealability - Google Patents
A kind of integrated valve plate suitable for casing gas device for detecting sealability Download PDFInfo
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- CN107314868A CN107314868A CN201710546936.8A CN201710546936A CN107314868A CN 107314868 A CN107314868 A CN 107314868A CN 201710546936 A CN201710546936 A CN 201710546936A CN 107314868 A CN107314868 A CN 107314868A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sliding Valves (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention relates to oil/gas drilling, completion and oil-gas casing technical field, a kind of specifically related to integrated valve plate suitable for casing gas device for detecting sealability, first piston is arranged in the first cylinder and the first cylinder inner cavity is divided into the first inlet chamber and venting cavity, first slideway and first pivot of lever one end coordinate, and the other end coordinates with elastic component makes elastic component be in compressive state；Second piston is arranged in the second cylinder and the second cylinder inner cavity is divided into the second inlet chamber and discharge chamber, one end of second piston bar is fixedly connected with second piston, the other end stretches out the second cylinder and is provided with the second slideway, and the second slideway and second pivot of lever one end coordinate；Air inlet pipe is communicated respectively at the first inlet chamber and the second inlet chamber, and downtake pipe is used to discharge the gas for being passed through the first cylinder by air inlet pipe, and second exhaust pipe is communicated with discharge chamber, so, it is possible cost-effective.
Description
Technical field
The present invention relates to oil/gas drilling, completion and oil-gas casing technical field, and in particular to it is airtight that one kind is applied to sleeve pipe
The integrated valve plate of envelope property detection means.
Background technology
The average annual consumption of petroleum amount of China is up to several hundred million tons, but the recovery process of oil is complicated, and safety coefficient requires high.
Tubing and casing is that most tubing is used in oil exploitation, and petroleum casing pipe is screwed by internal and external threads, sleeve pipe is joined end to end and gos deep into well
Lower to be on active service, oil casing can not only protect the borehole wall, can also separate oil, gas, water layer.Single tubing and casing must have anti-
High pressure, anti-corrosion property energy, whole oil casing should also meet good air-tightness.Pass through clamp connection, one between current sleeve pipe
Clip up to up to a hundred used in the common oil well of mouth, there is the not enough problem of air-tightness at any one clamp connection can all lead
Cause whole oil casing system air-tightness not enough.Once air-tightness deficiency will cause fluctuation of pressure, casing safety is influenceed, is existed
Major safety risks, can not anticipated losses while can also be produced to environment and society.
Show that the air-tightness of oil casing system is largely dependent on the sealing of cannula connection according to substantial amounts of experiment
Property.Because the working environment of sleeve pipe has complexity, institute is loaded also sufficiently complex, and the air-tightness caused by these factors is not enough
It is difficult to avoid that.But when the required precision and transport of technical problem when being due to sleeve pipe connection, operational issue, and processing
Safeguard measure it is not enough caused by the problem of be avoidable.
In order to ensure the air-tightness between sleeve pipe, it is necessary to carry out air-leakage test to it.Domestic oil-gas casing hermetic seal inspection
The patent CN104764566A and CN105319020A for surveying expert kingdom honor professor disclose the scheme specifically detected, but
Some shortcomings are still had in actual use, and patent CN104764566A is in detection, because air bag is by axial compressive force,
Be allowed to slide in and out along tube wall and produce larger friction, there is certain loss to air bag, at the same when being detected using external pressure due to
Be not easy alignment when nested also can produce abrasion to air bag, and the problem of air bag weares and teares also exists in patent CN105319020A
In, and testing staff's execute-in-place is needed during patent CN105319020A detections, there is certain potential safety hazard, in addition, existing
There is the helium used in technology and nitrogen to reclaim to use, be after the completion of use directly release in the air, cost is higher,
And helium pollutes the environment, if the helium of release is sucked by personnel, life danger is easily caused.
The content of the invention
In view of the above-mentioned problems, can be carried out by the way of directly being supplied to air bag, the problem of air bag weares and teares can be solved, but
It is that this is accomplished by being equipped with two sources of the gas at the scene, and a source of the gas is supplied to air bag, another source of the gas, which is used to test, to be revealed, so
Arrangement, can increase cost of equipment, air machinery is high, and cost is higher, therefore, it is an object of the invention to：For above-mentioned use
Two sources of the gas cause cost higher and the irretrievable problem of gas there is provided a kind of suitable for casing gas device for detecting sealability
Integrated valve plate, can overcome above mentioned problem.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of integrated valve plate suitable for casing gas device for detecting sealability, including the first plunger group, the second plunger group, thick stick
Bar, elastic component, pedestal, air inlet pipe, downtake pipe and second exhaust pipe, the lever is can be pivotably arranged described
On pedestal, the two ends of the lever set pivot, respectively the first pivot and the second pivot；The first plunger group includes first
Cylinder, first piston and First piston bar, the first piston are arranged in first cylinder and by first cylinder
Chamber is divided into the first inlet chamber and venting cavity, and one end of the First piston bar is fixed with the first piston, and the other end stretches out institute
State cylinder and be provided with the first slideway, first slideway and first pivot of described lever one end coordinate, the other end
Coordinating with the elastic component makes the elastic component be in compressive state；The second plunger group includes the second cylinder, second piston
With second piston bar, the second piston is arranged in second cylinder and second cylinder inner cavity is divided into the second air inlet
Chamber and discharge chamber, the face area of the second piston are more than the nearly piston port of the discharge chamber, and the nearly piston port is
The port coordinated with the second piston, one end of the second piston bar is fixedly connected with the second piston, and the other end is stretched
Go out second cylinder and be provided with the second slideway, second slideway and second pivot of described lever one end coordinate；
The air inlet pipe is communicated respectively at first inlet chamber and second inlet chamber, and the downtake pipe is used to discharge by entering
Tracheae is passed through the gas of first cylinder, and the second exhaust pipe is communicated with the discharge chamber.
Preferably, the downtake pipe and first cylinder inner cavity with the first piston and initial position when
Side wall communicate, L<H, L are the end of the mouth of pipe and close first inlet chamber of the first piston of the downtake pipe
The distance in face, H is the length of first slideway.
Preferably, the integrated valve plate also includes communicating pipe and two-way stepping motor, the communicating pipe connection first is entered
Air cavity and venting cavity, are provided with the first valve for controlling first inlet chamber to be connected with the venting cavity on the communicating pipe
Door, the communicating pipe is provided with tail pipe close to one end of the venting cavity, and the tail pipe connects the communicating pipe and the external world, described
I is provided with the second valve on pipe, the opening and closing for controlling tail pipe；The two-way stepping motor can drive the lever to rotate.
Preferably, the first piston end face is more than the end coordinated with the first piston of first inlet chamber
Mouthful.
In summary, by adopting the above-described technical solution, the beneficial effect of the application is：It is capable of the gas of recovery experiment
Body, it is only necessary to which a source of the gas enough, can be cost-effective.
Brief description of the drawings
Fig. 1 is the structural representation of casing gas device for detecting sealability；
Fig. 2 is the structural representation of the integrated flap of the application；
Fig. 3 is the structural representation of another integrated flap of the application；
Marked in figure：7- air bags, 24- elastic components, the pivots of 25- first, 26- First piston bars, 27- first pistons, 28-
One cylinder, the inlet chambers of 281- first, 282- venting cavities, 29- downtake pipes, 30- air inlet pipe, the cylinders of 31- second, 311- second
Inlet chamber, 312- discharge chambers, 32- second pistons, 33- second exhaust pipes, 34- second piston bars, the pivots of 35- second, 36- gas
Road, 38- levers, the slideways of 40- first, the slideways of 41- second, 43- sealing rings, 51- casing joints, 52- sleeve pipes, 53- monitoring components,
6- cylinders, 62- annular space chambers, 67- two-way stepping motors, the valves of 681- first, the valves of 682- second, 683- tail pipes, 684- connects
Siphunculus, 69- pedestals.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
As shown in figure 1, be to use dual gas supply to solve the gas tightness detection means of sleeve pipe 52 of the wear problem of air bag 7, bag
Include cylinder 6 and be arranged in the air bag 7 at the inner chamber two ends of cylinder 6, cylinder 6 and be provided with stomata 37 and the air flue communicated with air bag 7
36, the communicated air bags 7 of air flue 36 and the outer wall of cylinder 6, stomata 37 connect the inner chamber of cylinder 6 and the outer wall of cylinder 6 between two air bags 7,
In use, sleeve pipe 52 is put into detection means, casing joint 51 is set to be located between two air bags 7, and will leakage gas-monitoring dress
Be seated in sleeve pipe 52, close to joint position, then first pass through air flue 36 and inflated to air bag 7, the gas poured be helium and
The mixed gas of nitrogen, expands air bag 7 and contacts the outer wall of sleeve pipe 52, the outer wall of sleeve pipe 52, the inwall of cylinder 6 and air bag 7 it
Between form closed annular space chamber 62, when the pressure in air bag 7 reaches preset value, air bag 7 and the outer wall pressure of sleeve pipe 52 are sufficiently large
When, ventilated by stomata 37 to annular space chamber 62, when the pressure of annular space chamber 62 reaches preset value, stop ventilation and keep pressure
Value checks the monitor value of monitoring component 53 in preset time, if finding gas in sleeve pipe 52, then it represents that in annular space cavity
Gas leaked to by casing joint 51 in sleeve pipe 52, i.e. the sealing property of casing joint 51 is relatively low.
Accordingly, it would be desirable to which using two sets of helium and Nitrogen source gases, cost of equipment is high, therefore, as shown in Fig. 2 a kind of be applicable
In the integrated valve plate of the gas tightness detection means of sleeve pipe 52, it is characterised in that including the first plunger group, the second plunger group, lever
38th, elastic component 24, pedestal 69, air inlet pipe 30, downtake pipe 29 and second exhaust pipe 33, lever 38 is can pivotably set
Put on pedestal 69, the two ends of lever 38 set pivot, respectively the first pivot 25 and the second pivot 35；First plunger group includes
First cylinder 28, first piston 27 and the bar 26 of 27 first piston of first piston 27, first piston 27 are arranged in the first cylinder 28
And the inner chamber of the first cylinder 28 is divided into the first inlet chamber 281 and venting cavity 282, one end of the bar 26 of 27 first piston of first piston 27
Fixed with first piston 27, the other end stretches out cylinder and is simultaneously provided with the first slideway 40, the of the first slideway 40 and the one end of lever 38
One pivot 25 coordinates, and the other end coordinates with elastic component 24 makes elastic component 24 be in compressive state；Second plunger group includes second
Cylinder 31, second piston 32 and second piston bar 34, second piston 32 are arranged in the second cylinder 31 and by the second cylinder 31
Chamber is divided into the second inlet chamber 311 and discharge chamber 312, and the face area of second piston 32 is more than the nearly piston port of discharge chamber 312,
Nearly piston port is the port coordinated with second piston 32, and one end of second piston bar 34 is fixedly connected with second piston 32, separately
One end stretches out the second cylinder 31 and is provided with the second slideway 41, and the second slideway 41 and second pivot 35 of the one end of lever 38 coordinate；
Air inlet pipe 30 is communicated respectively at the first inlet chamber 281 and the second inlet chamber 311, and downtake pipe 29 is used to discharge by air inlet pipe 30
The gas of the first cylinder 28 is passed through, second exhaust pipe 33 is communicated with discharge chamber 312；First slideway 40 and the excellent fit of the second slideway 41
Close, lever 38 is smoothly pivoted；Specifically, air intake duct 36 is communicated with source of the gas, the first discharge pipe is communicated with air flue 36, to gas
The inflation of capsule 7 is deflated, and the second discharge pipe is communicated with stomata 37, is inflated and is deflated to annular space chamber 62.
Thus, when in use, gases at high pressure are passed through to air inlet pipe 30 by a source of the gas, gas by air inlet pipe 30 simultaneously
Into the first cylinder 28 and the second cylinder 31, gas is obstructed in the second cylinder 31, it is impossible to enter discharge chamber 312, in the first gas
In cylinder 28, first piston 27 is promoted to move downward, piston is by gas pressure and the active force of elastic component 24, descent of piston, when
Descent of piston distance exceed L but less than H when, air inlet by the first discharge pipe enter air bag 7, air bag 7 is inflated, persistently this
Air pressure continues to think the inflation of air bag 7 until pressure reaches preset value, and in increasing source of the gas output pressure, piston is continued traveling downwardly, and works as piston
After Bottom Runby is more than H, the bar 26 of 27 first piston of first piston 27 promotes lever 38 to rotate, and the rotation of lever 38 drives second piston
Bar 34 is up, and second piston 32 is up, so as to open the passway of the second inlet chamber 311 and discharge chamber 312, source gas passes through
Air inlet pipe 30, the second inlet chamber 311, the discharge pipe of discharge chamber 312 and second enter annular space chamber 62, and annular space chamber 62 is inflated,
After pressure reaches preset value, stop source of the gas inflation, so, it is possible first to inflate to air bag 7 to form closed annular space chamber 62,
Then inflated again to closed annular space chamber 62, it is just enough using a source of the gas, it is cost-effective.
Specifically, as shown in Fig. 2 the cylinder inner cavity of downtake pipe 29 and first with first piston 27 and during initial position
Side wall communicate, L<H, L for the end face close to the first inlet chamber 281 of the mouth of pipe and the first piston 27 of downtake pipe away from
From H is the length of the first slideway 40, in this way, when air inlet pipe 30 is passed through source of the gas gases at high pressure, gas can be in the inner product of air inlet pipe 30
Pressure a period of time, until promoting first piston 27 to open the communicating passage of the first inlet chamber 281 and downtake pipe 29, opening
Before the communicating passage of first inlet chamber 281 and downtake pipe 29, the high-pressure gas pressure in air inlet pipe 30 can increased,
Second piston 32 is set to compress the second cylinder 31 in the second inlet chamber 311, it is to avoid gas leakage, it is cost-effective.
More specifically, as shown in figure 3, integrated valve plate also includes communicating pipe 684 and two-way stepping motor 67, communicating pipe 684
The first inlet chamber 281 and venting cavity 282 are connected, is provided with communicating pipe 684 for controlling the first inlet chamber 281 and venting cavity
First valve 681 of 282 connections, communicating pipe 684 is provided with tail pipe 683 close to one end of venting cavity 282, and the connection of tail pipe 683 connects
Siphunculus 684 and the external world, I is provided with the second valve 682 on pipe, the opening and closing for controlling tail pipe 683；The energy of two-way stepping motor 67
Enough activation levers 38 rotate, thus, when before inflation, the first valve 681 of closing makes the first inlet chamber 281 and venting cavity 282 not connect
It is logical, the second valve 682 is opened, venting cavity 282 is communicated by tail pipe 683 with the external world, the gas in venting cavity 282 can be discharged
To the external world, pressure is identical with atmospheric pressure, and thus, when being inflated to inlet chamber, the pressure of venting cavity 282 will not change, and will not hinder
First piston 27 is descending, saves the energy；In addition, after the completion of air bag 7 and annular space chamber 62 are inflated, first closing the second valve
682, venting cavity 282 is disconnected with extraneous, then the second valve 682 is opened, and the first inlet chamber 281 is connected with venting cavity 282, two
Chamber pressure is identical, and piston upper and lower end face stress is identical, still, and now piston rod is also upwarded pressure by elastic component 24, therefore,
Piston makes the first inlet chamber 281 be disconnected with downtake pipe 29 to up up to the lower port of the first inlet chamber 281 of contact, this
When second piston 32 be also reset to shown position, the second inlet chamber 311 also disconnects with discharge chamber 312, now, carry out casing joint
51 air-leakage test, after completion to be detected, closes source of the gas, and opens quick opening valve, air inlet pipe 30 is reclaimed with gas and fills
Connection is put, now, the pressure in the second inlet chamber 311 is less than the pressure of annular space chamber 62, so that second piston 32 is up, beats
The gas opened in the communicating passage of the second inlet chamber 311 and discharge chamber 312, annular space chamber 62 passes through second exhaust pipe 33, exhaust
Chamber 312, the first inlet chamber 281 and air inlet pipe 30 drain into gas concentration unit, and the gas into annular space chamber 62 is reclaimed；It is logical
Crossing design makes L long enoughs, in the exhaust process of annular space chamber 62, piston upper surface always on second exhaust pipe 33, or
Start two-way stepping motor 67, it is to avoid first piston 27 is descending excessive and the first inlet chamber 281 is connected with downtake pipe 29；
After the discharge of the gas of annular space chamber 62 is complete, starts the activation lever 38 of two-way stepping motor 67 and rotate, make first piston 27 descending
Until the first inlet chamber 281 is connected with downtake pipe 29, now the gas in air bag 7 is entered by downtake pipe 29, first
Air cavity 281 and air inlet pipe 30 drain into gas concentration unit, thereby, it is possible to complete the recovery of experimental gas, first complete annular space chamber
62 gas is withdrawn, it is to avoid the gas of annular space chamber 62 lets out, then the gas completed in air bag 7 is reclaimed, and is further saved
Cost.
More specifically, the end face of first piston 27 is more than the port coordinated with first piston 27 of the first inlet chamber 281, such as
This, convenient control.
Claims (4)
1. one kind be applied to sleeve pipe (52) gas tightness detection means integrated valve plate, it is characterised in that including the first plunger group,
Second plunger group, lever (38), elastic component (24), pedestal (69), air inlet pipe (30), downtake pipe (29) and second exhaust pipe
(33), the lever (38) is can be pivotably arranged on the pedestal (69), and the two ends of the lever (38) set pivot
Axle, respectively the first pivot (25) and the second pivot (35)；
The first plunger group includes the first cylinder (28), first piston (27) and first piston (27) first piston (27) bar
(26), the first piston (27) is arranged in first cylinder (28) and the first cylinder (28) inner chamber is divided into first
Lived with described first inlet chamber (281) and venting cavity (282), one end of first piston (27) first piston (27) bar (26)
Fill in (27) to fix, the other end stretches out the cylinder and is simultaneously provided with the first slideway (40), first slideway (40) and the lever
(38) first pivot (25) of one end coordinates, and the other end coordinates with the elastic component (24) makes the elastic component (24) place
In compressive state；
The second plunger group includes the second cylinder (31), second piston (32) and second piston bar (34), the second piston
(32) it is arranged in second cylinder (31) and the second cylinder (31) inner chamber is divided into the second inlet chamber (311) and exhaust
Chamber (312), the face area of the second piston (32) is more than the nearly piston port of the discharge chamber (312), the nearly piston
Port is the port coordinated with the second piston (32), one end and the second piston (32) of the second piston bar (34)
It is fixedly connected, the other end stretches out second cylinder (31) and is provided with the second slideway (41), second slideway (41) and institute
Second pivot (35) for stating lever (38) one end coordinates；
The air inlet pipe (30) communicates respectively at first inlet chamber (281) and second inlet chamber (311), and described first
Blast pipe (29), which is used to discharge, is passed through the gas of first cylinder (28) by air inlet pipe (30), the second exhaust pipe (33) with
The discharge chamber (312) communicates.
2. integrated valve plate according to claim 1, it is characterised in that the downtake pipe (29) and first cylinder
(28) inner chamber with the first piston (27) with initial position when side wall communicate, L<H, L are the downtake pipe (29)
The mouth of pipe and the first piston (27) close first inlet chamber (281) end face distance, H is first slideway
(40) length.
3. integrated valve plate according to claim 2, it is characterised in that the integrated valve plate also include communicating pipe (684) and
Two-way stepping motor (67), the communicating pipe (684) connects the first inlet chamber (281) and venting cavity (282), the communicating pipe
(684) the first valve (681) for controlling first inlet chamber (281) to be connected with the venting cavity (282) is provided with,
The communicating pipe (684) is provided with tail pipe (683) close to one end of the venting cavity (282), and tail pipe (683) connection is described
The second valve (682) is provided with communicating pipe (684) and the external world, my pipe, the opening and closing for controlling tail pipe (683)；It is described
Two-way stepping motor (67) can drive the lever (38) to rotate.
4. the integrated valve plate according to claim 1-3 any one, it is characterised in that first piston (27) end face is big
In the port coordinated with the first piston (27) of first inlet chamber (281).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546936.8A CN107314868B (en) | 2017-07-06 | 2017-07-06 | A kind of integrated valve plate suitable for casing gas device for detecting sealability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546936.8A CN107314868B (en) | 2017-07-06 | 2017-07-06 | A kind of integrated valve plate suitable for casing gas device for detecting sealability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107314868A true CN107314868A (en) | 2017-11-03 |
| CN107314868B CN107314868B (en) | 2019-05-31 |
Family
ID=60177579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710546936.8A Active CN107314868B (en) | 2017-07-06 | 2017-07-06 | A kind of integrated valve plate suitable for casing gas device for detecting sealability |
Country Status (1)
| Country | Link |
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| CN (1) | CN107314868B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2520453A1 (en) * | 1982-01-25 | 1983-07-29 | Conil Pierre | Programmed controller for hydraulic or pneumatic irrigation actuator - uses spring-loaded catch mechanism released by electronic timer circuit working through solenoid |
| DE68915802T3 (en) * | 1988-02-09 | 2000-01-05 | Brian B. Hasha | Process for leak testing the connections of pipes. |
| CN2366639Y (en) * | 1999-04-08 | 2000-03-01 | 谭旭红 | Power saving type valve for discharging water from reservoir |
| CN102359655A (en) * | 2011-09-08 | 2012-02-22 | 潘正平 | Lever type slow closing valve |
| CN105351565A (en) * | 2015-12-11 | 2016-02-24 | 吴红梅 | Fuel gas recognition device |
| CN106151661A (en) * | 2016-08-20 | 2016-11-23 | 成都云士达科技有限公司 | A kind of valve switch of scalable pressure |
-
2017
- 2017-07-06 CN CN201710546936.8A patent/CN107314868B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2520453A1 (en) * | 1982-01-25 | 1983-07-29 | Conil Pierre | Programmed controller for hydraulic or pneumatic irrigation actuator - uses spring-loaded catch mechanism released by electronic timer circuit working through solenoid |
| DE68915802T3 (en) * | 1988-02-09 | 2000-01-05 | Brian B. Hasha | Process for leak testing the connections of pipes. |
| CN2366639Y (en) * | 1999-04-08 | 2000-03-01 | 谭旭红 | Power saving type valve for discharging water from reservoir |
| CN102359655A (en) * | 2011-09-08 | 2012-02-22 | 潘正平 | Lever type slow closing valve |
| CN105351565A (en) * | 2015-12-11 | 2016-02-24 | 吴红梅 | Fuel gas recognition device |
| CN106151661A (en) * | 2016-08-20 | 2016-11-23 | 成都云士达科技有限公司 | A kind of valve switch of scalable pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107314868B (en) | 2019-05-31 |
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