CN209724329U - A kind of multistage fill out sand tube - Google Patents
A kind of multistage fill out sand tube Download PDFInfo
- Publication number
- CN209724329U CN209724329U CN201921528894.6U CN201921528894U CN209724329U CN 209724329 U CN209724329 U CN 209724329U CN 201921528894 U CN201921528894 U CN 201921528894U CN 209724329 U CN209724329 U CN 209724329U
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- cylinder
- ring
- higher level
- ear
- fill out
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Abstract
The utility model patent discloses a kind of multistage fill out sand tube, it is related to oilfield injection technical field, this fill out sand tube includes multiple cylinder composition cylinders being sequentially connected with by increasing diameter, the both ends of cylinder are sealedly connected with end cap, it is connected between adjacent cylinder by ring-like cutting ferrule pressing sealing structure, ring-like cutting ferrule pressing sealing structure includes outer ring ear, inner ring ear, sealing ring and pressure ring, fill out sand tube is divided into the multistage of reducing by the utility model, it is connected between each section by ring-like cutting ferrule pressing sealing structure, this type of attachment passes through in pressure ring compression, the adjacent cylinder of outer ring seal, with the quick detachable double dominant being sealed with bolt presses of thread seal, each section is dismantled when being convenient to clean, use conventional bit, that is, accessible all sand bodies, convenient for sand removal.
Description
Technical field
The utility model relates to oilfield injection technical field, specially a kind of multistage fill out sand tube.
Background technique
Fill out sand tube is the commonly used equipment that the properties such as core seepage flow are studied in a kind of oilfield injection field, is inside filled with quartz
Sand or sand of appearing common are the isometrical type fill out sand tube of cylinder and cylinder multistage reducing type fill out sand tube at present.In rock core displacement test
After, usually need to clean out the column sand body in fill out sand tube.Due to sand body it is solid and it is crowded be attached on back-up sand inside pipe wall, remove compared with
Difficulty generallys use impact drill and combines the mode for removing sand body with long hand shovel.But since fill out sand tube draw ratio is big and straight
Diameter is often smaller, and conventional bit can not touch deeper sand body, and with long hand shovel, then work efficiency is very low, causes to clear up extremely difficult, takes
When it is laborious, multistage subsection at providing a direction to solve this problem, but current multistage reducing type fill out sand tube its mainly also
It rests on through variable diameter and simulates working solution speed of the seepage flow as caused by the variation apart from wellbore centre distance in stratum filtration
In the variation of degree, and the variation of simulation working liquid capability as caused by the variation of seepage velocity, not to the side of being convenient to clean
Face is goed deep into, and is connected between current multistage its each reduced pipe of reducing type fill out sand tube using conventional interference connection or double thread,
Known, interference connection is that inconvenient disassembly is even non-detachable, and then seal point is more, leakage point is more, Er Qiedan for double thread connection
Sealing performance declines to a great extent after pure threaded connection is repeatedly dismantled, so current multistage reducing back-up sand cylinder is not appropriate for repeatedly tearing open
It unloads, still cleaning is difficult.
Summary of the invention
The purpose of the utility model is to provide a kind of multistage fill out sand tube, fill out sand tube is divided into the more of reducing by the utility model
Section compresses the sealing of inner and outer rings ear by pressure ring between each section, and sealing effect is good, and simply, when cleaning can quickly tear each section open for disassembly
It opens, using conventional bit, that is, accessible all sand bodies, is convenient for sand removal, the concrete scheme of the utility model is as follows:
A kind of multistage fill out sand tube, including at least two waney cylinders, cylinder successively connect according to the sequence of increasing diameter
Composition cylinder is connect, the both ends that thieff hatch and cylinder are provided on cylinder are sealedly connected with end cap, and through-hole confession is provided on end cap
Fluid circulation, for the ease of distinguishing and introducing the type of attachment between each cylinder, by diameter in two cylinders adjacent on cylinder
Lesser cylinder is known as higher level's cylinder, and the cylinder being relatively large in diameter is junior's cylinder, passes through ring between higher level's cylinder and junior's cylinder
The connection of type cutting ferrule pressing sealing structure.
Ring-like cutting ferrule pressing sealing structure includes outer ring ear, inner ring ear, sealing ring and pressure ring, and outer ring ear is fixed on higher level's circle
The outside of cylinder one end, outer diameter are not more than the internal diameter of junior's cylinder；The inner ring ear is fixed on the inside of junior's cylinder one end,
Higher level's cylinder is passed through junior's cylinder by the outer diameter of outer diameter of the internal diameter not less than higher level's cylinder, the outer ring ear no more than higher level's cylinder
And so that inner ring ear and outer ring ear is close to arrangement, higher level's cylinder outer wall is connected with pressure ring, for push inner ring ear make its with it is outer
Ring ear compresses, and certainly, the face compressed between inner and outer rings ear can be flat seal, T-slot sealing etc., in order to improve sealing effect
Fruit, is additionally provided with sealing ring between outer ring ear and inner ring ear, and sealing ring can be chosen unlimited according to the form of its sealing surface
In Graphite pad, tetrafluoroethene gasket, octagonal gasket.
Preferably, the outer surface of higher level's cylinder is provided with external screw thread, and pressure ring is connect by screw thread with higher level's cylinder.
Preferably, cylinder both ends are connect with end cap by thread seal.
The utility model beneficial effect is:
Fill out sand tube is divided into the multistage of reducing by the utility model, is connected between each section by ring-like cutting ferrule pressing sealing structure
It connects, this type of attachment compresses inner and outer rings by pressure ring and seals adjacent cylinder, has thread seal quick detachable close with bolt presses
It is sealed the double dominant sealed, dismantles each section when being convenient to clean, using conventional bit, that is, accessible all sand bodies, convenient for clear
Sand.
Detailed description of the invention
Fig. 1 is 1 overall schematic of the utility model embodiment；
Fig. 2 is 2 overall schematic of the utility model embodiment；
It is respectively marked in figure as follows:
1, end cap；2, cylinder；3, outer ring ear；4, inner ring ear；5, pressure ring；6, sealing ring；7, thieff hatch；
21, higher level's cylinder；22, junior's cylinder.
Specific embodiment
The utility model is described further with reference to the accompanying drawing, but the utility model can be used for but be not limited to following reality
Apply example.
Embodiment 1
A kind of multistage fill out sand tube, including two waney cylinders 2, cylinder 2 are sequentially connected with according to increasing diameter
Cylinder is formed, thieff hatch 7 is provided on cylinder and the both ends of cylinder is sealedly connected with end cap 1, through-hole confession is provided on end cap 1
Fluid circulation, for the ease of distinguishing and introducing the type of attachment between each cylinder, by diameter in two cylinders 2 adjacent on cylinder
Lesser cylinder is known as higher level's cylinder 21, and the cylinder being relatively large in diameter is junior's cylinder 22, higher level's cylinder 21 and junior's cylinder 22 it
Between by ring-like cutting ferrule pressing sealing structure connect.
Ring-like cutting ferrule pressing sealing structure includes outer ring ear 3, inner ring ear 4, pressure ring 5 and sealing ring 6, and outer ring ear 3 is fixed on
The outside of 21 one end of higher level's cylinder, outer diameter are not more than the internal diameter of junior's cylinder 22；Inner ring ear 4 is fixed on junior's cylinder 22 1
The inside at end, the outer diameter of outer diameter of the internal diameter not less than higher level's cylinder 21, the outer ring ear 4 no more than higher level's cylinder 21, Shang Jiyuan
Cylinder 21 passes through junior's cylinder 22 and inner ring ear 3 and outer ring ear 4 are close to arrangement, and 21 outer wall of higher level's cylinder is connected with pressure ring 5, uses
In pushing inner ring ear 4 to compress it with outer ring ear 3, it is provided with gasket between inner ring ear 3 and outer ring ear 4, specifically seals
Pad is Graphite pad, is conventional flat seal between the two.
Embodiment 2
Such as Fig. 2, the present embodiment includes three waney cylinders 2, and cylinder 2 is sequentially connected with according to increasing diameter
Cylinder is formed, the present embodiment is to increase a cylinder 2 on the basis of embodiment 1, between each two neighboring cylinder 2 still
It is connected by the ring-like cutting ferrule pressing sealing structure in embodiment 1.
The above does not impose any limitation on the present invention, although the utility model is with preferably real
It is disclosed above to apply example, however is not intended to limit the utility model, any person skilled in the art is not departing from this reality
With in new technique aspects, when the technology contents using the disclosure above make a little change or are modified to equivalent variations
Equivalent embodiment, but all contents without departing from technical solutions of the utility model, according to the technical essence of the utility model to
Any simple modification, equivalent change and modification made by upper embodiment, are still within the scope of the technical solutions of the present invention.
Claims (3)
1. a kind of multistage fill out sand tube, including at least two waney cylinders, the cylinder according to increasing diameter sequence successively
Connection forms cylinder, is provided with thieff hatch on the cylinder and the both ends of cylinder are sealedly connected with end cap, be provided on end cap
Through-hole, which is characterized in that on the cylinder in two adjacent cylinders, lesser diameter is higher level's cylinder, is relatively large in diameter and is
Junior's cylinder is connected between higher level's cylinder and junior's cylinder by ring-like cutting ferrule pressing sealing structure,
The ring-like cutting ferrule pressing sealing structure includes outer ring ear, inner ring ear, sealing ring and pressure ring, and the outer ring ear is fixed on
The outside of grade cylinder one end, and its outer diameter is not more than the internal diameter of junior's cylinder；The inner ring ear is fixed on junior's cylinder one end
Inside, and the outer diameter of outer diameter of its internal diameter not less than higher level's cylinder, the outer ring ear no more than higher level's cylinder, higher level's cylinder are worn
It crosses junior's cylinder and inner ring ear and outer ring ear is close to arrangement, higher level's cylinder outer wall is connected with pressure ring, the outer ring ear
Sealing ring is additionally provided between inner ring ear.
2. a kind of multistage fill out sand tube according to claim 1, which is characterized in that the outer surface of higher level's cylinder is respectively provided with
There is external screw thread, the pressure ring is connect by screw thread with higher level's cylinder.
3. a kind of multistage fill out sand tube according to claim 2, which is characterized in that the cylinder both ends and end cap pass through screw thread
It is tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921528894.6U CN209724329U (en) | 2019-09-16 | 2019-09-16 | A kind of multistage fill out sand tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921528894.6U CN209724329U (en) | 2019-09-16 | 2019-09-16 | A kind of multistage fill out sand tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209724329U true CN209724329U (en) | 2019-12-03 |
Family
ID=68675995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921528894.6U Expired - Fee Related CN209724329U (en) | 2019-09-16 | 2019-09-16 | A kind of multistage fill out sand tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209724329U (en) |
-
2019
- 2019-09-16 CN CN201921528894.6U patent/CN209724329U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191203 Termination date: 20200916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |