CN210714587U - Pressure damping blanking plug - Google Patents
Pressure damping blanking plug Download PDFInfo
- Publication number
- CN210714587U CN210714587U CN201921710758.9U CN201921710758U CN210714587U CN 210714587 U CN210714587 U CN 210714587U CN 201921710758 U CN201921710758 U CN 201921710758U CN 210714587 U CN210714587 U CN 210714587U
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- pressure
- distribution pipe
- bottom cap
- damping
- sealing connection
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Abstract
The utility model provides a pressure damping blanking plug. Relates to the technical field of oilfield flooding. The fishing rod comprises a body, a fishing head and the like, wherein the lower part of the body is in threaded sealing connection with a damping section, the lower part of the damping section is in threaded sealing connection with a bottom cap, and a filter screen is wrapped on the bottom cap. The utility model discloses a set up damping device in distribution pipe lower part, when injection pressure produces undulantly, the shock pressure of short time can be absorbed by the air in diaphragm and the airtight space in diaphragm upper portion, reach pressure damping's purpose, make the pressure in the water distribution pipe at back keep relative steady and invariable, the water injection quality has been improved, the protection injection allocation instrument is not influenced by the undulant impact of pressure, improve the life of injection allocation instrument, the conical of end cap is favorable to throwing of blanking plug and drags for, also help the filter screen to form a mesh open structure downwards, when the injection allocation pressure fluctuation, the pressure wave of vibration helps peeling off the debris that will adhere to on the filter screen, reduce the risk that the filter screen blockked up.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil field water injection technique and specifically relates to a pressure damping blanking plug.
Background art:
the blanking plug is an important part of the layered water injection technology, the blanking plug is mainly universal type of a replaceable water nozzle at present, a proper water nozzle is selected according to the requirement of water injection amount, the blanking plug is thrown into a hole in the side of a working cylinder of an eccentric water distributor after being installed, and the water injection amount can meet the requirement under an ideal state. The existing blanking plug is easy to cause the blockage of the blanking plug due to the fact that the underground condition is bad, the injected water contains impurities, mineral substances and the like, and the normal work of the blanking plug is influenced; on the other hand, when the operating conditions change, for example: the water injection pressure of a water injection station reaching a water injection well through a pipe network system changes, the pressure of a complex and changeable water injection layer of an underground oil layer fluctuates, at the moment, the injected flow liquid fluctuates, the injection pressure and the flow of the stratum are directly influenced, and severe pressure fluctuation can also cause the deformation, the blocking and other conditions of an underground water distribution part.
The utility model has the following contents:
in order to solve the problem, the utility model provides a pressure damping blanking plug.
The technical scheme of the utility model is that: a pressure damping blanking plug comprises a body, a throwing and fishing head, an upper support, a compression spring, a torsion spring, a cam, a liquid outlet hole and sealing grooves arranged on two sides of the liquid outlet hole, wherein the lower part of the body is in threaded sealing connection with a damping section, and the lower part of the damping section is in threaded sealing connection with a bottom cap;
the upper part of the bottom cap is in threaded sealing connection with the damping section, the lower part of the bottom cap is conical, a plurality of strip-shaped water inlet seams are formed on the conical surface of the bottom cap, and the water inlet seams are communicated with a central opening of the bottom cap;
the damping section, damping section's inner chamber middle part position fixed seal has the outer loop, the inboard sealing connection diaphragm of outer loop, the diaphragm center trompil sealing fixed connection center ring, the center ring hole is equipped with the water distribution pipe, the center ring hole be equipped with the water distribution pipe, center ring and water distribution pipe bottom excircle sealing fixed connection, the center hole of water distribution pipe top thread sealing connection body lower part.
The lower part of the bottom cap is conical, and the conical outer part of the bottom cap is wrapped with a filter screen.
The water distribution pipe can be replaced with water distribution pipes with different inner diameters according to needs, the whole blanking plug does not need to be replaced, and the cost is reduced.
The utility model discloses following beneficial effect has: the utility model discloses a set up damping device in distribution pipe lower part, when injection pressure produces undulantly, the shock pressure of short time can be absorbed by the air in diaphragm and the airtight space in diaphragm upper portion, reach pressure damping's purpose, make the pressure in the water distribution pipe at back keep relative steady and invariable, the water injection quality has been improved, the protection injection allocation instrument is not influenced by the undulant impact of pressure, improve the life of injection allocation instrument, the conical of end cap is favorable to throwing of blanking plug and drags for, also help the filter screen to form a mesh open structure downwards, when the injection allocation pressure fluctuation, the pressure wave of vibration helps peeling off the debris that will adhere to on the filter screen, reduce the risk that the filter screen blockked up.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1-a throwing and fishing head, 2-an upper bracket, 3-a compression spring, 4-a torsion spring, 5-a cam, 6-a body, 7-a sealing groove, 8-a liquid outlet hole, 9-a damping section, 10-a bottom cap, 11-a water inlet seam, 12-a water distribution pipe, 13-a central ring, 14-a diaphragm, 15-an outer ring and 16-a filter screen.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the pressure damping blanking plug comprises a body 6, a throwing and fishing head 1, an upper bracket 2, a compression spring 3, a torsion spring 4, a cam 5, a liquid outlet hole 8 and sealing grooves 7 arranged at two sides of the liquid outlet hole 8, wherein the lower part of the body 6 is in threaded sealing connection with a damping section 9, and the lower part of the damping section 9 is in threaded sealing connection with a bottom cap 10;
the upper part of the bottom cap 10 is in threaded sealing connection with the damping section 9, the lower part of the bottom cap 9 is conical, the conical bottom cap 8 is beneficial to fishing operation, a plurality of strip-shaped water inlet seams 11 are formed on the conical surface of the bottom cap, the strip-shaped water inlet seams are easy to process and can be processed by a milling machine, and the water inlet seams 11 are communicated with the central opening of the bottom cap and are communicated with the upper space of the bottom cap 9;
The lower part of the bottom cap 10 is conical, and the conical outer part of the bottom cap 10 is wrapped with a filter screen 16.
The water distribution pipe 12 can be replaced by the water distribution pipe 12 with different inner diameters according to the requirement.
An outer ring 15, a diaphragm 14 and a central ring 13 in the damping section 9 divide the inner cavity of the damping section 9 into an upper part and a lower part which are closed, and between the damping section 9 and the lower part of the body 6, because a water distribution pipe 12 is in threaded sealing connection with a central hole at the lower part of the body 6, a space from above the diaphragm 14 to the lower part of the body 6 becomes a closed space containing air, and a communicated space is formed between the lower part of the diaphragm 14 and the bottom cap 10 and the water distribution pipe 12.
When injection liquid enters the blanking plug from the water inlet seam, the injection liquid is filled in the space below the diaphragm and enters the water distribution pipe, enters the inner cavity of the body and flows out through the liquid outlet hole, when injection pressure fluctuates, the vibration pressure in a short time can be absorbed by the air in the sealed space above the diaphragm and the diaphragm, so that the purpose of pressure damping is achieved, the pressure in the water distribution pipe at the back keeps relatively stable and constant, the water injection quality is improved, the injection tool is protected from being impacted by pressure fluctuation, and the service life of the injection tool is prolonged.
Wrapping up the filter screen outside end cap lower part, effectually preventing that debris from getting into the blanking plug, the conical shape of end cap is favorable to throwing of blanking plug on the one hand to drag for, and on the other hand, this structure also helps the filter screen to form a mesh open pattern downwards, and when joining in marriage notes pressure fluctuation, the pressure wave of vibration helps peeling off the debris that will adhere to on the filter screen, reduces the risk that the filter screen blockked up.
Claims (3)
1. The utility model provides a pressure damping blanking plug, includes body (6), drags for head (1), upper bracket (2), compression spring (3), torsional spring (4), cam (5), goes out liquid hole (8) and arranges sealed recess (7) in going out liquid hole (8) both sides, its characterized in that: the lower part of the body (6) is in threaded sealing connection with a damping section (9), and the lower part of the damping section (9) is in threaded sealing connection with a bottom cap (10);
the upper part of the bottom cap (10) is in threaded sealing connection with the damping section (9), the lower part of the bottom cap (10) is conical, a plurality of strip-shaped water inlet seams (11) are formed in the conical surface of the bottom cap (10), and the water inlet seams (11) are communicated with a central hole of the bottom cap;
damping section (9), the inner chamber middle part fixed seal of damping section (9) has outer ring (15), inboard sealing connection diaphragm (14) of outer ring (15), diaphragm (14) center trompil sealing fixed connection centre ring (13), centre ring (13) hole is equipped with distribution pipe (12), centre ring (13) hole be equipped with distribution pipe (12), centre ring (13) hole and distribution pipe (12) bottom excircle sealing fixed connection, the centre bore of distribution pipe (12) top thread sealing connection body (6) lower part.
2. A pressure damped plug according to claim 1 wherein: the lower part of the bottom cap (10) is conical, and the conical outer part of the bottom cap (10) is wrapped with a filter screen (16).
3. A pressure damped plug according to claim 1 wherein: the water distribution pipe (12) can be replaced by the water distribution pipe (12) with different inner diameters according to the requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921710758.9U CN210714587U (en) | 2019-10-12 | 2019-10-12 | Pressure damping blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921710758.9U CN210714587U (en) | 2019-10-12 | 2019-10-12 | Pressure damping blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714587U true CN210714587U (en) | 2020-06-09 |
Family
ID=70935893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921710758.9U Active CN210714587U (en) | 2019-10-12 | 2019-10-12 | Pressure damping blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210714587U (en) |
-
2019
- 2019-10-12 CN CN201921710758.9U patent/CN210714587U/en active Active
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