CN102251762A - Sand prevention protector for oil submersible motor - Google Patents
Sand prevention protector for oil submersible motor Download PDFInfo
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- CN102251762A CN102251762A CN2011101823303A CN201110182330A CN102251762A CN 102251762 A CN102251762 A CN 102251762A CN 2011101823303 A CN2011101823303 A CN 2011101823303A CN 201110182330 A CN201110182330 A CN 201110182330A CN 102251762 A CN102251762 A CN 102251762A
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- protector
- electric machine
- sand control
- submersible electric
- sand
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Abstract
The invention relates to a sand prevention protector for an oil submersible motor. The protector mainly solves the problems that sealing fails because sand easily enters the position between a mechanically sealed corrugated pipe and a sealing ring of the conventional sand prevention protector for the oil submersible motor and the protector fails because impurities in well fluid easily enter a respiration cavity to damage fittings in the protector. The protector is characterized in that: the upper part of a communicating hole (2) is connected with a respiration pipe (8), the interior of which is hollow; the upper part of the respiration pipe (8) is in the horizontal direction, and the end of the pipe is open; the part, aligned with the upper plane of an upper joint (1), of the side wall of a connector (9) is provided with a plurality of sand discharge holes (3); and the mechanical sealing device comprises dynamic and static sealing rings (6, 4) and welding corrugated pipes (7) at the upper parts of the sealing rings. The sand prevention protector for the oil submersible motor has the characteristics of prolonging the mechanical sealing service life, improving the working environment and achieving good protecting effect.
Description
Technical field
The present invention relates to the submersible electric machine with oil protector, be specially adapted to contain the Electric Submersible Pump Unit oil recovery of sand drain condition, belong to oil field oil recovery lifting equipment submersible electric pump technical field.
Background technology
In the oil field development process at home and abroad, the geological condition complexity is various, wherein contains sand drain and occupies larger proportion.As overseas the Sudan, Indonesia, Oman, Kazak and Iraq, domestic Tarim Basin, Xinjiang and soil are breathed out oil field, Jiangsu and Ji Dong etc.When containing the oil recovery of sand drain employing Electric Submersible Pump Unit, all adopt the sand control unit, so that when guaranteeing oil well output, effectively prolong the application life of unit, reduce cost for oil production.And in the sand control unit that uses at present, submersible electric machine with oil sand control protector is structurally compared without any variation with common protector, only be that General Purpose Rubber bellows and dynamic and static ring are the mechanical seal of carbide alloy material, this structures shape this kind mechanical seal be immersed in fully in the well liquid, rubber bellows is easily aging, impurity and sand grains in the well liquid is easy to enter between bellows and the static and dynamic sealing ring simultaneously, and unit is in operation process, in a single day sand grains in the well liquid enters between the bellows and joint ring of protector mechanical seal, just can cause mechanical seal to damage, lost efficacy; And when dynamo oil lacked, well liquid directly entered respiratory cavity by respiratory siphon, and sand grains in the well liquid and impurity easily cause damage to the accessory in the protector, and caused protector to lose efficacy.
Summary of the invention
Damage in order easily to enter sand grains between the bellows that overcomes the mechanical seal of existing submersible electric machine with oil sand control protector and the joint ring that the impurity that causes in seal failure, the well liquid enters easily that respiratory cavity causes damage to the protector accessory and the deficiency that causes protector to lose efficacy; the invention provides a kind of submersible electric machine with oil sand control protector, the characteristics that this submersible electric machine with oil sand control protector has prolonged mechanical sealing application life, improves the protector working environment, protection effect is good.
Technical scheme of the present invention is: a kind of submersible electric machine with oil sand control protector; comprise mechanically-sealing apparatus, top sub and coupled connector; and vertical direction has intercommunicating pore on the top sub; described intercommunicating pore top is connected with the respiratory siphon of inner hollow; and respiratory siphon top in horizontal direction and end-blown; on the connector sidewall with top sub on the planar registration position be provided with several clearance holes, described mechanically-sealing apparatus comprises the welding bellows on dynamic and static joint ring and top thereof.
Described respiratory siphon top is 90 degree circular arcs.
Described clearance hole and horizontal direction are miter angle, and downward-sloping from inside to outside, and clearance hole is uniform 4 of circumferencial direction.
Described welding bellows upper end is fixed on the protector axle by dog screw.
The present invention has following beneficial effect: owing to take such scheme; intercommunicating pore top connects respiratory siphon; respiratory siphon top in horizontal direction and end-blown; on the connector sidewall clearance hole is arranged; like this, just can prevent that well liquid from directly entering into the exocoel of first respiratory cavity, sand grains and impurity during the unit running in the well liquid are discharged to the unit outside by clearance hole under action of centrifugal force; prevent that effectively sand grains from retaining in connector, improved the working environment of protector.Simultaneously, mechanical seal is made up of parts such as dynamic and static joint ring and welding bellows, and welding bellows is kept apart well liquid on the one hand with auxiliary seal ring, on the other hand the wearing and tearing of static and dynamic sealing ring are played the effect of compensation, guarantees sealing effectiveness.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
1-top sub among the figure, 2-intercommunicating pore, 3-clearance hole, 4-stationary seal ring, 5-pressing plate, 6-rotary packing ring, 7-welding bellows, 8-respiratory siphon, 9-connector, 10-dog screw.
The specific embodiment:
The invention will be further described below in conjunction with accompanying drawing:
By shown in Figure 1; a kind of submersible electric machine with oil sand control protector; comprise mechanically-sealing apparatus; top sub 1; top sub 1 upper outside is by the connector 9 that has been threaded; its connecting portion is provided with sealing ring; and vertical direction has intercommunicating pore 2 on the top sub 1; first respiratory cavity of intercommunicating pore 2 bottom connecting protectors; described intercommunicating pore 2 tops are connected with the respiratory siphon 8 of inner hollow; and respiratory siphon 8 tops in horizontal direction and end-blown; the opening direction that is respiratory siphon is for radially; can avoid well liquid directly to enter first respiratory cavity of protector; as preferably, corner, described respiratory siphon 8 top is 90 degree circular arcs, and circular arc is processed easily on the one hand; avoid well liquid and impurity wherein directly to enter in the respiratory siphon on the other hand; impurity in the well liquid flows out by clearance hole 3, makes that the well liquid that enters first respiratory cavity by respiratory siphon 8 is that the content of sand grains or impurity significantly reduces through the well liquid of precipitation.Connector 9 sidewalls are provided with several clearance holes 3; planar registration on clearance hole 3 upper openings and the top sub 1; as preferably; described clearance hole 3 is miter angle with horizontal direction; and it is downward-sloping from inside to outside; the quantity of clearance hole 3 is uniform 4 of circumferencial direction; like this; when unit turns round; sand grains in the well liquid and impurity directly are thrown under action of centrifugal force in the unit sleeve pipe in addition and go; prevent that effectively sand grains and impurity from retaining, and improves the working environment of protector in the connector of protector top.
Described mechanically-sealing apparatus is by moving; stationary seal ring (6; 4) and the parts such as welding bellows 7 on top form; stationary seal ring 4 is fixed on the top sub 1 by pressing plate 5; stationary seal ring 4 tops are rotary packing ring 6; rotary packing ring 6 tops are equipped with welding bellows 7; and welding bellows 7 upper ends are fixed on the protector axle by dog screw 10; prevent welding bellows 7 play vertically; with its axial location; like this; moving; stationary seal ring (6; 4) and parts such as welding bellows 7 form mechanically-sealing apparatus jointly, welding bellows 7 is kept apart well liquid with its inner auxiliary seal on the one hand, on the other hand because welding bellows 7 is flexible; when moving; stationary seal ring (6; when wearing and tearing 4), welding bellows 7 plays the effect of compensation, guarantees sealing effectiveness; effectively prevent the damage that causes of sand grains in the well liquid and other impurity, the application life of prolonged mechanical sealing to mechanical seal.
Claims (5)
1. submersible electric machine with oil sand control protector; comprise mechanically-sealing apparatus; top sub (1) and coupled connector (9); and top sub (1) is gone up vertical direction intercommunicating pore (2); it is characterized in that: described intercommunicating pore (2) top is connected with the respiratory siphon (8) of inner hollow; and respiratory siphon (8) top in horizontal direction and end-blown; go up the planar registration position with top sub (1) on connector (9) sidewall and be provided with several clearance holes (3); described mechanically-sealing apparatus comprises moving; the welding bellows (7) on stationary seal ring (6,4) and top thereof.
2. submersible electric machine with oil sand control protector according to claim 1 is characterized in that: described respiratory siphon (8) top is 90 degree circular arcs.
3. submersible electric machine with oil sand control protector according to claim 2 is characterized in that: described clearance hole (3) is miter angle with horizontal direction, and downward-sloping from inside to outside.
4. submersible electric machine with oil sand control protector according to claim 3 is characterized in that: described clearance hole (3) is uniform 4 of circumferencial direction.
5. according to claim 3 or 4 described submersible electric machine with oil sand control protectors, it is characterized in that: described welding bellows (7) upper end is fixed on the protector axle by dog screw (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101823303A CN102251762A (en) | 2011-06-30 | 2011-06-30 | Sand prevention protector for oil submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101823303A CN102251762A (en) | 2011-06-30 | 2011-06-30 | Sand prevention protector for oil submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102251762A true CN102251762A (en) | 2011-11-23 |
Family
ID=44979299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101823303A Pending CN102251762A (en) | 2011-06-30 | 2011-06-30 | Sand prevention protector for oil submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102251762A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081015A (en) * | 2019-06-12 | 2019-08-02 | 中国石油天然气股份有限公司辽河油田分公司 | A kind of mechanical seal protective device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4286185A (en) * | 1979-06-21 | 1981-08-25 | Kobe, Inc. | Oil drying system for motors |
| CN2137049Y (en) * | 1992-09-26 | 1993-06-23 | 耿志远 | Sand prevention sealing mechanism for submersible motor |
| CN2545350Y (en) * | 2002-04-03 | 2003-04-16 | 胜利石油管理局无杆采油泵公司 | Electric water injection pump set |
| CN2667783Y (en) * | 2003-12-22 | 2004-12-29 | 天津市富兰克电机工程有限公司 | Submersible electric motor |
| US20050087343A1 (en) * | 2003-09-17 | 2005-04-28 | Schlumberger Technology Corporation | Motor Protector |
| CN2904441Y (en) * | 2006-05-26 | 2007-05-23 | 大庆油田有限责任公司 | Sand-proof oil-submersible linear motor |
| CN201277195Y (en) * | 2008-09-02 | 2009-07-22 | 徐华岳 | Sealing member of oil-submersible electric pump |
| CN202152668U (en) * | 2011-06-30 | 2012-02-29 | 中国石油天然气集团公司 | Sand control protector for submersible motor |
-
2011
- 2011-06-30 CN CN2011101823303A patent/CN102251762A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4286185A (en) * | 1979-06-21 | 1981-08-25 | Kobe, Inc. | Oil drying system for motors |
| CN2137049Y (en) * | 1992-09-26 | 1993-06-23 | 耿志远 | Sand prevention sealing mechanism for submersible motor |
| CN2545350Y (en) * | 2002-04-03 | 2003-04-16 | 胜利石油管理局无杆采油泵公司 | Electric water injection pump set |
| US20050087343A1 (en) * | 2003-09-17 | 2005-04-28 | Schlumberger Technology Corporation | Motor Protector |
| CN2667783Y (en) * | 2003-12-22 | 2004-12-29 | 天津市富兰克电机工程有限公司 | Submersible electric motor |
| CN2904441Y (en) * | 2006-05-26 | 2007-05-23 | 大庆油田有限责任公司 | Sand-proof oil-submersible linear motor |
| CN201277195Y (en) * | 2008-09-02 | 2009-07-22 | 徐华岳 | Sealing member of oil-submersible electric pump |
| CN202152668U (en) * | 2011-06-30 | 2012-02-29 | 中国石油天然气集团公司 | Sand control protector for submersible motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081015A (en) * | 2019-06-12 | 2019-08-02 | 中国石油天然气股份有限公司辽河油田分公司 | A kind of mechanical seal protective device |
| CN110081015B (en) * | 2019-06-12 | 2024-05-10 | 中国石油天然气股份有限公司辽河油田分公司 | Mechanical seal protection device |
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| PB01 | Publication | ||
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Application publication date: 20111123 |