CN211648068U - Blowout prevention box gland - Google Patents
Blowout prevention box gland Download PDFInfo
- Publication number
- CN211648068U CN211648068U CN201921988491.XU CN201921988491U CN211648068U CN 211648068 U CN211648068 U CN 211648068U CN 201921988491 U CN201921988491 U CN 201921988491U CN 211648068 U CN211648068 U CN 211648068U
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- Prior art keywords
- annular
- connecting sleeve
- cover plate
- plate
- annular cover
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- 210000004907 gland Anatomy 0.000 title claims abstract description 29
- 230000002265 prevention Effects 0.000 title claims abstract description 25
- 230000007797 corrosion Effects 0.000 claims abstract description 30
- 238000005260 corrosion Methods 0.000 claims abstract description 30
- 239000003112 inhibitor Substances 0.000 claims abstract description 25
- 238000012856 packing Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims 2
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a prevent spouting box gland belongs to and prevents spouting box technical field. One end of the connecting sleeve is connected with the packing blowout prevention box through the connecting structure, the annular plate is connected with the inner wall of the connecting sleeve in a sealing mode, the annular cover plate is connected onto the connecting sleeve and controls the annular plate to be located between the annular cover plate and the connecting structure, the through hole of the annular plate and the through hole of the annular cover plate are in clearance fit with the polish rod, and the annular cover plate, the annular plate and the connecting sleeve enclose a closed space. The corrosion inhibitor enters the closed space from the chemical feeding pipe which is connected to the connecting sleeve and communicated with the closed space, when the polished rod moves up and down along the axial direction of the polished rod, the corrosion inhibitor in the closed space can be adhered to the outer wall of the polished rod, the polished rod and the oil liquid can be separated by the corrosion inhibitor on the polished rod, the corrosion of the oil liquid to the polished rod is reduced, the smoothness of the surface of the polished rod is kept, the loss of the packing blowout prevention box and the packing caused by the oil liquid is further avoided, the loss of the polished rod can be reduced, and the replacement frequency of the polished.
Description
Technical Field
The disclosure relates to the technical field of blowout prevention boxes, in particular to a blowout prevention box gland.
Background
The polished rod is a specially-made connecting rod for realizing the connection between the sucker rod and the polished rod eye of the pumping unit, and the polished rod is generally coaxially provided with a packing and a packing blowout prevention box for sealing and preventing the well mouth of the pumping unit from oil leakage.
In the working process of the pumping unit, the polished rod needs to move along the axial direction of the polished rod and is in direct contact with oil in a well mouth, so that corrosive holes are formed in the surface of the polished rod, the oil enters the holes and continuously corrodes packing in a packing blowout prevention box, and wellhead oil leakage and environmental pollution are caused. The corrosion of oil leads to the polished rod loss fast, needs often to change the polished rod, increases manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides a blowout prevention box gland, which can reduce the loss of a polished rod and reduce the replacement times of the polished rod so as to reduce the production cost. The technical scheme is as follows:
the embodiment of the disclosure provides a blowout prevention box gland, which comprises a connecting sleeve, an annular plate, an annular cover plate and a chemical feeding pipe,
one end of the connecting sleeve is provided with a connecting structure used for being connected with the packing blowout prevention box, the annular plate is coaxially connected to the inner wall of the connecting sleeve, the outer wall of the annular plate is in sealing fit with the inner wall of the connecting sleeve, the annular cover plate is coaxially arranged in the connecting sleeve, the annular cover plate is in threaded connection with the connecting sleeve, the annular plate is positioned between the annular cover plate and the connecting structure,
the annular plate reaches the annular cover plate all has the through-hole that is used for with polished rod clearance fit, the annular cover plate, the annular plate with the adapter sleeve encloses into an enclosure space that is used for holding the corrosion inhibitor, add the pencil with the outer wall of adapter sleeve is connected, add the pencil with the enclosure space intercommunication.
Optionally, the blowout preventer gland further comprises two annular protective gaskets, one of the annular protective gaskets is coaxially arranged on one surface, close to the annular cover plate, of the annular plate, the other of the annular protective gaskets is coaxially arranged on one surface, close to the annular plate, of the annular cover plate, and outer walls of the two annular protective gaskets are in sealing fit with the inner wall of the connecting sleeve.
Optionally, the blowout prevention box gland further comprises a bushing coaxially arranged in the connecting sleeve, the outer wall of the bushing is attached to the inner wall of the connecting sleeve, two ends of the bushing respectively abut against the two annular protection washers, and an inflow hole communicating the bushing with the dosing pipe is formed in the side wall of the bushing.
Optionally, the liner is provided with a plurality of inflow holes, the plurality of inflow holes are arranged at equal intervals along the circumferential direction of the liner, and one of the plurality of inflow holes is communicated with one end of the dosing tube.
Optionally, the dosing pipe is an L-shaped pipe, one end of the dosing pipe is communicated with the closed space, and the other end of the dosing pipe extends towards one side of the annular cover plate.
Optionally, the minimum distance between the end face of the other end of the dosing tube and the annular plate is greater than the minimum distance between the annular cover plate and the annular plate.
Optionally, the other end of the dosing tube is provided with a tube cap.
Optionally, the cap is threadedly connected to the dosing tube.
Optionally, a prismatic boss is coaxially arranged on one surface, away from the annular plate, of the annular cover plate, and a through hole in clearance fit with the polish rod is arranged on the prismatic boss.
Optionally, the connection structure is a thread.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects: one end of the connecting sleeve is connected with the packing blowout prevention box through the connecting structure, the annular plate is connected with the inner wall of the connecting sleeve in a sealing mode, the annular cover plate is connected onto the connecting sleeve and controls the annular plate to be located between the annular cover plate and the connecting structure, the through hole of the annular plate and the through hole of the annular cover plate are in clearance fit with the polish rod, and the annular cover plate, the annular plate and the connecting sleeve enclose a closed space. The corrosion inhibitor enters the closed space from the chemical feeding pipe which is connected to the connecting sleeve and communicated with the closed space, when the polished rod moves up and down along the axial direction of the polished rod, the corrosion inhibitor in the closed space can be adhered to the outer wall of the polished rod, the polished rod and the oil liquid can be separated by the corrosion inhibitor on the polished rod, the corrosion of the oil liquid to the polished rod is reduced, the smoothness of the surface of the polished rod is kept, the loss of the packing blowout prevention box and the packing caused by the oil liquid is further avoided, the loss of the polished rod can be reduced, and the replacement frequency of the polished.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly introduced,
FIG. 1 is a schematic structural view of a gland of a blowout preventer cartridge according to an embodiment of the present disclosure;
fig. 2 is a top view of an annular cover plate provided by embodiments of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a gland of a blowout preventer cartridge provided in an embodiment of the present disclosure. As shown in fig. 1, the gland of the blowout preventer includes a connecting sleeve 1, an annular plate 2, an annular cover plate 3, a corrosion inhibitor 5 and a dosing pipe 4.
One end of the connecting sleeve 1 is provided with a connecting structure 11 for connecting the packing blowout prevention box 100, the annular plate 2 is coaxially connected to the inner wall of the connecting sleeve 1, the outer wall of the annular plate 2 is in sealing fit with the inner wall of the connecting sleeve 1, the annular cover plate 3 is coaxially arranged on the inner wall of the connecting sleeve 1, the annular cover plate 3 is in threaded connection with the connecting sleeve 1, and the annular plate 2 is located between the annular cover plate 3 and the connecting structure 11.
The annular plate 2 and the annular cover plate 3 are provided with through holes which are in clearance fit with the polish rod 100, the annular cover plate 3, the annular plate 2 and the connecting sleeve 1 enclose a closed space A, the corrosion inhibitor 5 is positioned in the closed space A, the dosing pipe 4 is connected with the outer wall of the connecting sleeve 1, and the dosing pipe 4 is communicated with the closed space A.
One end of the connecting sleeve 1 is connected with the packing blowout prevention box 200 through the connecting structure 11, the annular plate 2 is connected with the inner wall of the connecting sleeve 1 in a sealing mode, the annular cover plate 3 is connected onto the connecting sleeve 1 and controls the annular plate 2 to be located between the annular cover plate 3 and the connecting structure 11, the through hole of the annular plate 2 and the through hole of the annular cover plate 3 are in clearance fit with the polish rod 100, and the annular cover plate 3, the annular plate 2 and the connecting sleeve 1 enclose a closed space A. The corrosion inhibitor 5 enters the closed space A from the chemical feeding pipe 4 connected to the connecting sleeve 1 and communicated with the closed space A, when the polished rod 100 moves up and down along the axial direction of the polished rod 100, the corrosion inhibitor 5 positioned in the closed space A can be adhered to the outer wall of the polished rod 100, the polished rod 100 can be separated from oil by the corrosion inhibitor 5 on the polished rod 100, the corrosion of the oil on the polished rod 100 is reduced, the smoothness of the surface of the polished rod 100 is kept, the loss of the oil on the packing blowout prevention box 200 and the packing is further avoided, the loss of the polished rod 100 can be reduced, and the replacement frequency of the polished rod 100 is reduced so as to reduce.
As shown in fig. 1, the connecting structure 11 may be a thread. The connecting sleeve 1 can be provided with an internal thread connected with the packing blowout preventer 100 on the inner wall. The oil can be prevented from flowing out from the connection position of the connecting sleeve 1 and the packing blowout preventer 100.
The threads can facilitate the assembly and disassembly between the packing blowout preventer 100 and the connecting sleeve 1.
In other embodiments provided by the present disclosure, the connecting structure 11 may also be a bolt connection, which is not limited by the present disclosure.
As shown in fig. 1, the gland of the blowout preventer may further include two annular protection gaskets 6, one annular protection gasket 6 is coaxially disposed on one surface of the annular cover plate 2 close to the annular cover plate 3, the other annular protection gasket 6 is coaxially disposed on one surface of the annular cover plate 3 close to the annular cover plate 2, and the outer walls of the two annular protection gaskets 6 are in sealing fit with the inner wall of the connecting sleeve 1.
The annular protection gasket 6 can increase the sealing performance of the closed space A, prevent the corrosion inhibitor 5 from leaking from the joint of the annular plate 2 and the inner wall of the connecting sleeve 1 or the joint of the annular cover plate 3 and the inner wall of the connecting sleeve 1, meanwhile, the annular protection gasket 6 can also prevent the corrosion inhibitor 5 from causing corrosion damage to the annular plate 2 or the annular cover plate 3, and prolong the service life of the gland of the blowout prevention box.
The ring-shaped protection washer 6 may be attached to the ring plate 2 or the ring cover plate 3 by bonding, and the ring-shaped protection washer 6 may be pressed against the ring plate 2 or the ring cover plate 3 by bolts or other structures, which is not limited by the present disclosure.
Alternatively, the annular protective gasket 6 may be made of a rubber material. Is easy to manufacture.
On the premise that the annular plate 2 is provided with the annular protection gasket 6, the annular plate 2 and the connecting sleeve 1 can be in threaded connection. The annular cover plate 3 and the connecting sleeve 1 can also be connected by screw threads.
The arrangement is convenient for dismounting the blowout prevention box gland, and simultaneously can improve the sealing performance of the blowout prevention box gland.
In other embodiments provided by the present disclosure, a sealing ring may also be disposed between the outer wall of the annular plate 2 and the inner wall of the connecting sleeve 1 to achieve sealing, which is not limited by the present disclosure. As shown in fig. 1, the gland of the blowout preventer may further include a liner 7, the liner 7 is coaxially disposed on an inner wall of the connecting sleeve 1, an outer wall of the liner 7 is attached to the inner wall of the connecting sleeve 1, two ends of the liner 7 respectively abut against the two annular protection washers 6, and an inflow hole 71 communicating the liner 7 and the chemical feeding pipe 4 is formed in a side wall of the liner 7.
The bushing 7 can prevent the corrosion inhibitor 5 from damaging the connecting sleeve 1, the annular protection gasket 6 can be pressed on the annular plate 2 and the annular cover plate 3 by the bushing 7 at the moment, and the annular protection gasket 6 is bonded or screwed with the annular plate 2 and the annular cover plate 3, so that the service life of the blowout prevention box gland is prolonged, and the blowout prevention box gland is convenient to disassemble and assemble.
Alternatively, the hub 7 is provided with a plurality of inflow holes 71, the plurality of inflow holes 71 are equidistantly arranged along the circumferential direction of the hub 7, and one inflow hole 71 of the plurality of inflow holes 71 is communicated with one end of the dosing tube 4. Because the plurality of inflow holes 71 are arranged at equal intervals in the circumferential direction of the liner, when the liner 7 is installed in the connecting sleeve 1, only a small angle needs to be rotated for the liner 7 to align one inflow hole 71 with the dosing tube 4, and the installation of the liner 7 is convenient.
Illustratively, the dosing pipe 4 may be an L-shaped pipe, one end of the dosing pipe 4 communicates with the closed space a, and the other end of the dosing pipe 4 extends to one side of the annular cover plate 3.
By adopting the design, the corrosion inhibitor 5 can conveniently enter the closed space A from the dosing pipe 4, and the corrosion inhibitor 5 is not easy to flow out from the dosing pipe 4. Meanwhile, the liquid level height of the corrosion inhibitor 5 in the closed space A can be increased, so that the corrosion inhibitor 5 can be fully attached to the outer wall of the polish rod 200.
As shown in fig. 1, the other end of the dosing tube 4 may be provided with a cap 8.
The arrangement of the pipe cap 8 can improve the whole sealing performance of the gland of the blowout prevention box, and the corrosion inhibitor 5 and oil are prevented from flowing out of the other end of the dosing pipe 4 under the action of high pressure.
Optionally, the cap 8 is threadedly connected to the dosing tube 4.
The pipe cap 8 and the chemical feeding pipe 4 are in threaded connection, so that the sealing performance between the pipe cap 8 and the chemical feeding pipe 4 can be improved, and the pipe cap 8 and the chemical feeding pipe 4 can be conveniently disassembled.
As shown in fig. 1, in the axial direction of the connecting sleeve 1, the minimum distance D1 between the end surface of the other end of the dosing tube 4 and the annular plate 2 may be greater than the minimum distance D2 between the annular cover plate 3 and the annular plate 2.
Because the minimum distance D1 between the end face of the other end of the dosing tube 4 and the annular plate 2 can be larger than the minimum distance D2 between the annular cover plate 3 and the annular plate 2, the corrosion inhibitor 5 can be filled in the whole closed space A, and the corrosion inhibitor 5 cannot overflow from the other end of the dosing tube 4.
It should be noted that, in fig. 1, a horizontal dotted line between the annular plate 2 and the annular cover plate 3 in the enclosed space a is a liquid level line of the corrosion inhibitor 5, and at this time, the corrosion inhibitor 5 is in a state of not filling the enclosed space a.
Fig. 2 is a top view of an annular cover plate provided by an embodiment of the present disclosure, and in conjunction with fig. 1 and fig. 2, a prism boss 9 may be coaxially disposed on a side of the annular cover plate 3 away from the annular plate 2, and a through hole in clearance fit with the polish rod 200 is disposed on the prism boss 9.
The arrangement of the prismatic boss 9 can facilitate the worker to use tools to rotate the prismatic boss 9, so that the annular cover plate 3 and the connecting sleeve 1 can be conveniently disassembled and assembled.
Alternatively, the prism boss 9 may be a hexagonal frustum. The staff can hold six prismatic table through the spanner, screws up or unscrew annular apron 3, the staff's of being convenient for dismouting annular apron 3.
In other possible implementations, the prism boss 9 may also be a triangular frustum, a rectangular frustum, or the like.
As shown in fig. 2, the diameter of the circumcircle of the end face of the hexagonal frustum 10 is smaller than the inner diameter of the connecting sleeve 1. A certain operation space is reserved between the hexagonal frustum 10 and the connecting sleeve 1, and the annular cover plate 3 and the connecting sleeve 1 can be disassembled and assembled in the operation space.
The above description is meant to be illustrative of the principles of the present disclosure and not to be taken in a limiting sense, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.
Claims (10)
1. A blowout prevention box gland is characterized by comprising a connecting sleeve (1), an annular plate (2), an annular cover plate (3) and a dosing pipe (4),
one end of the connecting sleeve (1) is provided with a connecting structure (11) used for being connected with a packing blowout prevention box (100), the annular plate (2) is coaxially connected to the inner wall of the connecting sleeve (1), the outer wall of the annular plate (2) is in sealing fit with the inner wall of the connecting sleeve (1), the annular cover plate (3) is coaxially arranged in the connecting sleeve (1), the annular cover plate (3) is in threaded connection with the connecting sleeve (1), the annular plate (2) is located between the annular cover plate (3) and the connecting structure (11),
the annular plate (2) and the annular cover plate (3) are provided with through holes which are used for being in clearance fit with a polish rod (200), the annular cover plate (3), the annular plate (2) and the connecting sleeve (1) enclose a closed space (A) for containing a corrosion inhibitor (5), the dosing pipe (4) is connected with the outer wall of the connecting sleeve (1), and the dosing pipe (4) is communicated with the closed space (A).
2. A blowout preventer gland according to claim 1, further comprising two annular protective gaskets (6), one annular protective gasket (6) being coaxially arranged on a face of the annular plate (2) adjacent to the annular cover plate (3) and the other annular protective gasket (6) being coaxially arranged on a face of the annular cover plate (3) adjacent to the annular plate (2), the outer walls of both annular protective gaskets being in sealing engagement with the inner wall of the connecting sleeve.
3. The blowout preventer gland according to claim 2, further comprising a bushing (7), wherein the bushing (7) is coaxially disposed in the connecting sleeve (1), an outer wall of the bushing (7) is attached to an inner wall of the connecting sleeve (1), two ends of the bushing (7) respectively abut against the two annular protective washers (6), and an inflow hole (71) for communicating the bushing (7) with the chemical feeding pipe (4) is formed in a side wall of the bushing (7).
4. The blowout preventer gland according to claim 3, wherein the liner (7) has a plurality of inflow holes (71) formed therein, the plurality of inflow holes (71) being arranged at equal intervals in a circumferential direction of the liner (7), and one inflow hole (71) of the plurality of inflow holes (71) being in communication with one end of the filler pipe (4).
5. A blowout preventer gland according to any one of claims 1 to 4, wherein the dosing pipe (4) is an L-shaped pipe, one end of the dosing pipe (4) is communicated with the closed space (A), and the other end of the dosing pipe (4) extends towards one side of the annular cover plate (3).
6. A blowout preventer gland according to claim 5, wherein the minimum distance (D1) between the end face of the other end of the dosing tube (4) and the annular plate (2) is greater than the minimum distance (D2) between the annular cover plate (3) and the annular plate (2).
7. A blowout preventer gland according to any one of claims 1 to 4, wherein the other end of the dosing tube (4) is provided with a cap (8).
8. The blowout preventer gland according to claim 7, wherein the cap (8) is threadably connected to the filler tube (4).
9. A blowout preventer gland according to any one of claims 1-4, wherein a prismatic boss (9) is coaxially arranged on one side of the annular cover plate (3) far away from the annular plate (2), and through holes in clearance fit with the polish rod (200) are arranged on the prismatic boss (9).
10. A blowout preventer gland according to any one of claims 1 to 4, wherein the connection structure (11) is a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921988491.XU CN211648068U (en) | 2019-11-15 | 2019-11-15 | Blowout prevention box gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921988491.XU CN211648068U (en) | 2019-11-15 | 2019-11-15 | Blowout prevention box gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211648068U true CN211648068U (en) | 2020-10-09 |
Family
ID=72692458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921988491.XU Active CN211648068U (en) | 2019-11-15 | 2019-11-15 | Blowout prevention box gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211648068U (en) |
-
2019
- 2019-11-15 CN CN201921988491.XU patent/CN211648068U/en active Active
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