CN206554917U - A kind of cross section sealing flow controller - Google Patents
A kind of cross section sealing flow controller Download PDFInfo
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- CN206554917U CN206554917U CN201720127702.5U CN201720127702U CN206554917U CN 206554917 U CN206554917 U CN 206554917U CN 201720127702 U CN201720127702 U CN 201720127702U CN 206554917 U CN206554917 U CN 206554917U
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Abstract
The utility model discloses a kind of cross section sealing flow controller, belong to oil field instrument field.The flow controller includes being provided with the central tube of multiple fluid holes on tube wall and is sequentially connected with from top to bottom and is sleeved on the top connection on central tube, locking cap, pressure spring, pressure regulation cap, outer barrel, seal and lower contact；Pressure regulation cap, outer barrel, seal can slide axially along central tube；The seal is hollow cylindrical structure, and the centre bore of central tube is provided through vertically, and when pressure spring is in diastole state, the lower surface of seal and the upper surface of lower contact are brought into close contact；When pressure spring is in compressive state, seal is up, exposes fluid hole.So, increase the contact area of seal and lower contact, it ensure that the sealing effectiveness between seal and lower contact, and ensure that the lower surface of seal will not be damaged under the repeat impact of current, add access times of the flow controller in operation process, it is ensured that effective progress of follow-up work.
Description
Technical field
The utility model is related to oil field instrument field, more particularly to a kind of cross section sealing flow controller.
Background technology
With deepening continuously for oilfield development process, oil, gas and water casing are long-term by factors such as external force, chemical attacks
Influence, casing failure phenomenon is increasing, and part oil, gas and water well are caused leakage phenomena serious, made this due to casing failure
Oil, gas and water well can not be produced normally.Therefore, in order to damaged sleeve pipe is repaired or changed in time, it is ensured that oil, gas,
The normal production of well, it is necessary to the sleeve pipe of oil, gas and water well look for Lou (position for looking for casing damage).
Prior art is that by flow controller and packer, such as K344 series packers are supported the use, with complete oil, gas,
The sleeve pipe of well is looked for Lou.Specifically, the flow controller includes central tube and is sequentially connected with from top to bottom, and is sleeved on the central tube
On top connection, locking cap, pressure spring, pressure regulation cap, outer barrel, seal, lower contact, wherein, pressure regulation cap, outer barrel, seal
It can be slid axially along central tube, seal includes sliding sleeve body and sealing ring, and the sliding sleeve body fits are on central tube, and lower end is set
Round platform connected in star is equipped with, seal groove is provided with the inwall of the round platform connected in star, the sealing ring is located in seal groove, with to close
Sealed between sealing and central tube；The upper end of lower contact is located in round platform connected in star, makes the inwall of round platform connected in star with
The outer wall of upper end of joint mutually sticks to (top that wherein, sealing ring is located at lower contact), and is provided with the tube wall of central tube
Multiple fluid holes (fluid hole is located in the round platform connected in star, and positioned at the lower section of sealing ring).Using when, by upper oil pipe, throttling
Device, lower oil pipe, ball seat are sequentially connected from top to bottom, constitute Tube-colume for seanching leakage area.Then by the Tube-colume for seanching leakage area tripping in sleeve pipe, two are set
(now, pressure spring is in diastole state to individual K344 packers, and the inwall and the outer wall of lower contact upper end of round platform connected in star are affixed
To), steel ball is delivered into Tube-colume for seanching leakage area, steel ball is fallen on ball seat, to block the lower end of the Tube-colume for seanching leakage area, then from well head to
Water filling in Tube-colume for seanching leakage area, in the presence of the water injection pressure produced downwards from well head, makes to be sleeved on seal on central tube, outer
Cylinder, pressure regulation cap move up to compress pressure spring, shorten the distance between pressure regulation cap and locking cap, and then make seal
Separated with the upper end of lower contact, now injecting the water in Tube-colume for seanching leakage area can flow through from fluid hole in round platform connected in star and lower contact
The gap at end, eventually arrives at the oil jacket annular space between two K344 packers, well head pressure situation is observed, then, by continuous
Tube-colume for seanching leakage area (being realized by unsealing, setting K344 packers) is above carried or transferred, water filling is suppressed, and continue observation well head pressure and become
Change situation, until a certain moment pressure has significant change, then may determine that breakage occurs for the sleeve pipe of the position.
Designer has found that prior art at least has problems with：
Due to carrying out needing repeatedly above to propose or transfer Tube-colume for seanching leakage area and the water filling into the Tube-colume for seanching leakage area when sleeve pipe is looked for leakage,
Seal and lower contact separating for several times during this, the water injected flow from fluid hole into oil jacket annular space, easily make sealing ring
It is damaged in the presence of the water that fluid hole is discharged, and then makes that thorn leakage occurs between seal and central tube.Also, due to close
Sealing and lower contact connect for line line, and sealing is poor between the two, when occurring above-mentioned thorn leakage phenomenon, outside Tube-colume for seanching leakage area
Pressure enters in round platform connected in star from leak is pierced, and easily seal is separated with lower contact, so as to influence the effective of follow-up work
Carry out.
Utility model content
The utility model embodiment technical problem to be solved is that there is provided close between a kind of seal and lower contact
Seal the preferable cross section sealing flow controller of effect.Concrete technical scheme is as follows：
A kind of cross section sealing flow controller, including the central tubes of multiple fluid holes is provided with tube wall and suitable from top to bottom
The secondary top connection for connecting and being sleeved on the central tube, locking cap, pressure spring, pressure regulation cap, outer barrel, seal, and under
Joint；
The pressure regulation cap, the outer barrel, the seal can slide axially along the central tube；
The seal is hollow cylindrical structure, the axially disposed centre bore having through the central tube；
When the pressure spring is in diastole state, the lower surface of the seal and the upper surface of the lower contact are tight
It is closely connected to close；
When the pressure spring is in compressive state, the seal is up, exposes the fluid hole.
Specifically, preferably, the seal includes cylindrical body and annular seal plate；
The cylindrical body and the annular seal plate are axially disposed the centre bore；
The lower end of the cylindrical body is threadedly coupled with the annular seal plate, and the lower surface of the annular seal plate
Fitted with the upper surface of the lower contact.
Specifically, preferably, the seal also includes being sleeved on the central tube, and positioned at the tubular sheet
Ring section sealing gasket between body and the annular seal plate.
Specifically, preferably, the bottom of the top connection is provided with outside the first internal thread hole, the upper end of the central tube
The first external screw thread being adapted with first internal thread hole is provided with wall, so that the lower end of the top connection and the center
The threaded upper ends connection of pipe；
Be provided with the second external screw thread on the lower end outer wall of the top connection, the upper end of the locking cap be provided with it is described outer
The second internal thread hole that screw thread is adapted, so that the lower end of the top connection is connected with the threaded upper ends of the locking cap.
Specifically, preferably, being provided with seal groove on the inwall of first internal thread hole；
The first sealing ring is provided with the upper seal groove.
Specifically, preferably, the upper end of the lower contact is provided with outside the 3rd internal thread hole, the central tube lower end
The 3rd external screw thread being adapted with the 3rd internal thread hole is provided with wall, so that the upper end of the lower contact and the center
The lower end threaded connection of pipe.
Specifically, preferably, being provided with lower seal groove cavity on the inwall of the 3rd internal thread hole；
The second sealing ring is provided with the lower seal groove cavity.
Specifically, preferably, the upper end of the outer barrel is threadedly coupled with the lower end of the pressure regulation cap；
The upper end of the cylindrical body be provided with the 4th internal thread hole, the outer wall of the outer barrel lower end be provided with it is described
The 4th external screw thread that 4th internal thread hole is adapted, so that the lower end of the outer barrel and the threaded upper ends of the cylindrical body connect
Connect.
Specifically, it is sleeved on preferably, being provided with the 4th internal thread hole on the central tube, and upper end
The ring-shaped rubber sealing gasket that face and the lower surface of the outer barrel are brought into close contact.
Specifically, preferably, being provided with multiple middle seal grooves on the inwall of the outer barrel；
The 3rd sealing ring is provided with each middle seal groove.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The cross section sealing flow controller that the utility model embodiment is provided, by the way that seal is arranged into hollow cylinder knot
Structure, and the lower surface of seal and the upper surface of lower contact are brought into close contact, the contact area of seal and lower contact is increased,
Ensure that the sealing effectiveness between seal and lower contact, at the same ensure that seal lower surface will not current multiple punching
Hit down and be damaged, add access times of the cross section sealing flow controller in operation process, it is ensured that follow-up work it is effective
Carry out.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation for the cross section sealing flow controller that the utility model embodiment is provided.
Reference is represented respectively：
1 central tube,
101 fluid holes,
2 top connections,
3 locking caps,
4 pressure springs,
5 pressure regulation caps,
6 outer barrels,
7 seals,
701 cylindrical bodies,
702 annular seal plates,
703 ring section sealing gaskets,
8 lower contacts,
9 first sealing rings,
10 second sealing rings,
11 the 3rd sealing rings.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
The utility model embodiment provides a kind of cross section sealing flow controller, as shown in figure 1, the cross section sealing flow controller bag
Include the central tube 1 that multiple fluid holes 101 are provided with tube wall and be sequentially connected with and be sleeved on central tube 1 from top to bottom
Top connection 2, locking cap 3, pressure spring 4, pressure regulation cap 5, outer barrel 6, seal 7 and lower contact 8；Wherein, pressure regulation cap 5, outer barrel
6th, seal 7 can slide axially along central tube 1；In addition, the seal 7 be hollow cylindrical structure, it is axially disposed have through
The centre bore of central tube 1, when pressure spring 4 is in diastole state, the lower surface and the upper surface of lower contact 8 of seal 7 are tight
It is closely connected to close；When pressure spring 4 is in compressive state, seal 7 is up, exposes the fluid hole 101.
The operation principle for the cross section sealing flow controller that the utility model embodiment is provided is as described below：
Upper oil pipe, cross section sealing flow controller, lower oil pipe, ball seat are sequentially connected from top to bottom, constituting Tube-colume for seanching leakage area (needs
Illustrate, upper oil pipe refers to the multiple oil pipes sequentially connected being connected with the upper end of top connection 2, lower oil pipe is referred to under
Multiple oil pipes sequentially connected that the lower end of joint 8 is connected, ball seat is common for this area, is that one kind is used for ball-off,
Make the device of liquid one-way flowing).Meanwhile, the K344 packers of two same sizes are set in upper oil pipe and lower oil pipe
Upper (axial distance between two K344 packers is about 200m).Then by the Tube-colume for seanching leakage area tripping in down-hole casing, and sit
(now, pressure spring 4 is in diastole state, the lower surface of seal 7 and the upper surface of lower contact 8 to two K344 packers of envelope
It is brought into close contact), steel ball is delivered into Tube-colume for seanching leakage area, steel ball is fallen on ball seat, check valve (liquid is formed in the lower end of Tube-colume for seanching leakage area
Body can only be flowed into from oil jacket annular space, and jack-up steel ball could enter in Tube-colume for seanching leakage area, and under the situation that fluid hole 101 is blocked, liquid
Body can not be flowed into oil jacket annular space from Tube-colume for seanching leakage area).The subsequent water filling into Tube-colume for seanching leakage area from well head, what is produced downwards from well head
In the presence of water injection pressure, the seal 7, outer barrel 6, pressure regulation cap 5 that are sleeved on central tube 1 is set to move up with compression adjustment
Spring 4, shortens the distance between locking cap 3 and pressure regulation cap 5, and then make the lower surface of seal 7 and the upper surface of lower contact 8
Separation, exposes the fluid hole 101, now, and the water in injection Tube-colume for seanching leakage area is flow between two K344 packers from fluid hole 101
Oil jacket annular space, observe well head pressure situation of change, to complete to look for leakage operation at the position.Then by constantly above carry or under
Tube-colume for seanching leakage area (being realized by unsealing, setting K344 packers) is put, and water filling is suppressed, and observes well head pressure situation of change, until
A certain moment pressure has significant change, then may determine that the position sleeve pipe occur it is damaged, and then complete sleeve pipe looked for
Leakage.
Based on above-mentioned, by the way that seal 7 is arranged into hollow cylindrical structure, and the lower surface of seal 7 is set to be connect with
First 8 upper surface is brought into close contact, and increases the contact area of seal 7 and lower contact 8, it is ensured that seal 7 and lower contact 8 it
Between sealing effectiveness, and ensure that the lower surface of seal 7 will not be damaged under the repeat impact of current, add section
Seal access times of the flow controller in operation process, it is ensured that effective progress of follow-up work.
Wherein, preferably, multiple fluid holes 101 are circumferentially distributed around the side wall of central tube 1, by being arranged such, make
The water injected into Tube-colume for seanching leakage area is when fluid hole 101 flow to oil jacket annular space, and discharge capacity is uniform, makes the pressure in oil pipe and oil jacket annular space
Power is more stablized.
It should be noted that the direction where well head is considered as into top, the direction where shaft bottom is considered as lower section, and it is right
More than each part upper and lower to restriction it is also consistent with the above.In addition, K344 packers are a kind of hydraulic expanding packers,
Suspension type is fixed, hydraulic setting, hydraulic pressure deblocking, expands outwardly to insulate oil sets annular space by packing element, must be with section during work
Stream device is supported the use (for K344 packer settings and the mode of deblocking, in its course of work, without mechanical movement).
In the utility model embodiment, as shown in Figure 1, the seal 7 includes cylindrical body 701 and annular seal plate
702；Cylindrical body 701 and annular seal plate 702 are axially disposed the centre bore；The lower end of cylindrical body 701 and annular
Sealing plate 702 is threadedly coupled, and the lower surface of annular seal plate 702 is fitted with the upper surface of lower contact 8.Wherein, tubular sheet
The lower end of body 701 sets fluted, is provided with external screw thread on the outer wall of annular seal plate 702, is provided with the inwall of the groove
The internal thread being adapted with the external screw thread.By the way that annular seal plate 702 is threadedly coupled with the groove of the lower end of cylindrical body 701,
Cylindrical body 701 and the connection fastening of annular seal plate 702 are ensure that, while there is sealing effectiveness well, and it is easy to disassemble, when
Need to change very convenient during annular seal plate 702.In addition, annular seal plate 702 is preferably stainless steel metal material, in increase
While the compactness that the lower surface of seal 7 is fitted with the upper surface of lower contact 8, it is easy to cleaning, impact resistance, is being looked for
During leaking operation, the water discharged in fluid hole 101 can rinse annular seal plate 702 well, and, it is ensured that the ring
Shape sealing plate 702 will not be damaged under the repeat impact of current.
Further, preferably, the seal 7 also includes being sleeved on central tube 1, and positioned at cylindrical body 701
Ring section sealing gasket 703 between annular seal plate 702 (referring to accompanying drawing 1).It is understood that above-mentioned groove and annular
Sealing plate 702 forms a cavity, and ring section sealing gasket 703 is located in the cavity, by being arranged such, and further improves
Sealing between seal 7 and central tube 1, it is to avoid thorn leakage occurs in operation process for flow controller, so as to influence follow-up
Effective progress of work.
In the utility model embodiment, the lower end of top connection 2 is provided with outside the first internal thread hole, the upper end of central tube 1
The first external screw thread being adapted with first internal thread hole is provided with wall, so that the lower end of top connection 2 and the upper end of central tube 1
Threaded connection；Also, the second external screw thread is provided with the lower end outer wall of top connection 2, the upper end of locking cap 3 is provided with and the outer spiral shell
The second internal thread hole that line is adapted, so that the lower end of top connection 2 is connected with the threaded upper ends of locking cap 3.By being arranged such,
It ensure that top connection 2 is connected fastening with central tube 1, locking cap 3 respectively, while easy to disassemble, when needing to change top connection 2, lock
It is very convenient during tight cap 3.In addition, the upper end of top connection 2 is connected with upper tubing round thread, it both can guarantee that both connect fastening, simultaneously
It is again easy to disassemble.Wherein, it is provided with internal thread, the outer wall of upper oil pipe lower end and is provided with being somebody's turn to do on the inwall of the upper end of top connection 2
The external screw thread that internal thread is adapted (the screw thread specification is preferably 27/8TBG).
Further, it is provided with seal groove on the inwall of first internal thread hole；First is provided with this in seal groove
Sealing ring 9 (referring to accompanying drawing 1).Using when, the first sealing ring 9 is put into upper seal groove, then the upper end of central tube 1 is inserted
In first internal thread hole, central tube 1 is passed through first sealing ring 9, in this way, further increase central tube 1 and top connection 2 it
Between sealing, it is to avoid thorn leakage occurs in the junction of central tube 1 and top connection 2 for the flow controller, so as to influence the flow controller
Follow-up use.
In the utility model embodiment, the upper end of lower contact 8 is provided with outside the 3rd internal thread hole, the lower end of central tube 1
The 3rd external screw thread being adapted with the 3rd internal thread hole is provided with wall, so that the upper end of lower contact 8 and the lower end spiral shell of central tube 1
Line is connected.By being arranged such, it is ensured that central tube 1 is connected fastening with lower contact 8, at the same it is easy to disassemble, under needing to change
It is very convenient during joint 8.In addition, the lower end of lower contact 8 is connected with lower tubing round thread, it is ensured that while both connect fastening, just
In dismounting.Wherein, it is provided with external screw thread, the inwall of lower oil pipe upper end and is provided with and the outer spiral shell on the outer wall of the lower end of lower contact 8
The internal thread that line is adapted (the screw thread specification is preferably 27/8TBG).Preferably, on the 3rd internal thread hole of lower contact 8
End is provided with annular step, and the ring-shaped rubber gasket seal being sleeved on central tube 1 is provided with the annular step
(being made of the elastomeric material of sulfur resistive, acid), makes the upper surface of the ring-shaped rubber gasket seal and the lower end of annular seal plate 702
Face fits, and passes through the annular seal plate 702 that the ring-shaped rubber gasket seal of quality of rubber materials and stainless steel metal material are made
Fit, while ensureing that annular seal plate 702 will not be damaged under current repeat impact, further increase sealing
Sealing between part 7 and lower contact 8.
Further, it is provided with lower seal groove cavity on the inwall of the 3rd internal thread hole；It is close that second is provided with the lower seal groove cavity
Seal 10 (referring to accompanying drawing 1).Using when, the second sealing ring 10 is put into lower seal groove cavity, then the lower end of central tube 1 is inserted
In 3rd internal thread hole, central tube 1 is set to pass through second sealing ring 10, in this way, further increasing central tube 1 and lower contact 8
Between sealing, it is to avoid thorn leakage occurs in the junction of central tube 1 and lower contact 8 for the flow controller, so as to influence the throttling
The follow-up of device is used.
In the utility model embodiment, the upper end of outer barrel 6 is threadedly coupled with the lower end of pressure regulation cap 5；Cylindrical body 701
Upper end is provided with the 4th internal thread hole, the outer wall of the lower end of outer barrel 6 and is provided with the 4th outer spiral shell being adapted with the 4th internal thread hole
Line, so that the lower end of outer barrel 6 is connected with the threaded upper ends of cylindrical body 701.By by under the upper end of outer barrel 6 and pressure regulation cap 5
End threaded connection, it is ensured that pressure regulation cap 5 is connected fastening with outer barrel 6, while easy to disassemble.In addition, by by outer barrel 6 and tubular sheet
Body 701 is threadedly coupled, it is ensured that outer barrel 6 is connected fastening with seal body 701, while easy to disassemble.Wherein, outer barrel 6 upper end
External screw thread is provided with outer wall, the lower end of pressure regulation cap 5 is provided with the 5th internal thread hole being adapted with the external screw thread.
Further, it is provided with and is sleeved on central tube 1 in the 4th internal thread hole, and upper surface and outer barrel 6
The ring-shaped rubber sealing gasket that lower surface is brought into close contact.By setting ring-shaped rubber to seal between outer barrel 6 and cylindrical body 701
Pad, further increase the sealing between outer barrel 6 and cylindrical body 701, enhance flow controller carry out follow-up work when
Using effect.
In the utility model embodiment, as shown in Figure 1, multiple middle seal grooves are provided with the inwall of outer barrel 6；And
And, it is provided with the 3rd sealing ring 11 in each middle seal groove.Using when, the 3rd sealing ring 11 is put into middle seal groove
It is interior, then outer barrel 6 is sleeved on central tube 1 (it is understood that now, central tube 1 has already passed through multiple 3rd sealing rings
11), by being arranged such, the sealing between central tube 1 and outer barrel 6 is further increased, and then avoid central tube 1 and outer
Thorn leakage occurs for the junction of cylinder 6.
Preferred embodiment of the present utility model is the foregoing is only, not to limit protection domain of the present utility model,
It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this reality
Within new protection domain.
Claims (10)
1. a kind of cross section sealing flow controller, including the central tube (1) of multiple fluid holes (101) is provided with tube wall and from upper
And under be sequentially connected with and be sleeved on the top connection (2) on the central tube (1), locking cap (3), pressure spring (4), pressure regulation cap
(5), outer barrel (6), seal (7), and lower contact (8)；
The pressure regulation cap (5), the outer barrel (6), the seal (7) can slide axially along the central tube (1)；
Characterized in that, the seal (7) is hollow cylindrical structure, it is axially disposed to have through the central tube (1)
Centre bore；
When the pressure spring (4) is in diastole state, the lower surface of the seal (7) is upper with the lower contact (8)
End face is brought into close contact；
When the pressure spring (4) is in compressive state, the seal (7) is up, exposes the fluid hole (101).
2. cross section sealing flow controller according to claim 1, it is characterised in that the seal (7) includes cylindrical body
And annular seal plate (702) (701)；
The cylindrical body (701) and the annular seal plate (702) is axially disposed the centre bore；
The lower end of the cylindrical body (701) is threadedly coupled with the annular seal plate (702), and the annular seal plate
(702) fitted with the upper surface of the lower contact (8) lower surface.
3. cross section sealing flow controller according to claim 2, it is characterised in that the seal (7) also includes being sleeved on
On the central tube (1), and positioned at the ring section between the cylindrical body (701) and the annular seal plate (702)
Sealing gasket (703).
4. cross section sealing flow controller according to claim 1, it is characterised in that the lower end of the top connection (2) is provided with
It is provided with first internal thread hole, the upper end outer wall of the central tube (1) outside first be adapted with first internal thread hole
Screw thread, so that the lower end of the top connection (2) is connected with the threaded upper ends of the central tube (1)；
Be provided with the second external screw thread on the lower end outer wall of the top connection (2), the upper end of the locking cap (3) be provided with it is described
The second internal thread hole that external screw thread is adapted, so that the lower end of the top connection (2) and the threaded upper ends of the locking cap (3) connect
Connect.
5. cross section sealing flow controller according to claim 4, it is characterised in that set on the inwall of first internal thread hole
It is equipped with seal groove；
The first sealing ring (9) is provided with the upper seal groove.
6. cross section sealing flow controller according to claim 1, it is characterised in that the upper end of the lower contact (8) is provided with
It is provided with 3rd internal thread hole, the outer wall of central tube (1) lower end outside the 3rd be adapted with the 3rd internal thread hole
Screw thread, so that the upper end of the lower contact (8) is threadedly coupled with the lower end of the central tube (1).
7. cross section sealing flow controller according to claim 6, it is characterised in that set on the inwall of the 3rd internal thread hole
It is equipped with lower seal groove cavity；
The second sealing ring (10) is provided with the lower seal groove cavity.
8. cross section sealing flow controller according to claim 2, it is characterised in that adjusted with described the upper end of the outer barrel (6)
The lower end threaded connection of pressure cap (5)；
The upper end of the cylindrical body (701) be provided with the 4th internal thread hole, the outer wall of outer barrel (6) lower end be provided with
The 4th external screw thread that 4th internal thread hole is adapted, so that the lower end of the outer barrel (6) and the cylindrical body (701)
Threaded upper ends are connected.
9. cross section sealing flow controller according to claim 8, it is characterised in that be provided with the 4th internal thread hole
It is sleeved on the central tube (1), and the ring-shaped rubber that upper surface and the lower surface of the outer barrel (6) are brought into close contact is sealed
Pad.
10. cross section sealing flow controller according to claim 1, it is characterised in that be provided with the inwall of the outer barrel (6)
Multiple middle seal grooves；
The 3rd sealing ring (11) is provided with each middle seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720127702.5U CN206554917U (en) | 2017-02-13 | 2017-02-13 | A kind of cross section sealing flow controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720127702.5U CN206554917U (en) | 2017-02-13 | 2017-02-13 | A kind of cross section sealing flow controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206554917U true CN206554917U (en) | 2017-10-13 |
Family
ID=60010847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720127702.5U Active CN206554917U (en) | 2017-02-13 | 2017-02-13 | A kind of cross section sealing flow controller |
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| Country | Link |
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| CN (1) | CN206554917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068420A (en) * | 2019-04-28 | 2019-07-30 | 河南省计量科学研究院 | A kind of prefastening self-sealing pressure tapping |
-
2017
- 2017-02-13 CN CN201720127702.5U patent/CN206554917U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068420A (en) * | 2019-04-28 | 2019-07-30 | 河南省计量科学研究院 | A kind of prefastening self-sealing pressure tapping |
| CN110068420B (en) * | 2019-04-28 | 2024-05-14 | 河南省计量测试科学研究院 | Pre-tightening type self-sealing pressure gauge joint |
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