CN105515284A - Piston type protector - Google Patents
Piston type protector Download PDFInfo
- Publication number
- CN105515284A CN105515284A CN201610014480.6A CN201610014480A CN105515284A CN 105515284 A CN105515284 A CN 105515284A CN 201610014480 A CN201610014480 A CN 201610014480A CN 105515284 A CN105515284 A CN 105515284A
- Authority
- CN
- China
- Prior art keywords
- piston
- housing
- chamber
- piston rod
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators
Landscapes
- Actuator (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a piston type protector and belongs to the technical field of underground drilling tool motors. The piston type protector comprises a shell and a support for connecting an inner medium cavity, wherein the support is fixed on the shell; the piston type protector is characterized by further comprising a piston rod fixed on the support; the piston rod is located in the shell; a first piston and a second piston communicated with an outer medium cavity are connected between the piston rod and the shell through sealing rings; a transitional cavity is defined by the first piston, the second piston, the shell and the piston rod; a thin oil cavity is defined by the first piston, the shell, the piston rod and the support; an oil through hole is formed in the support; the oil through hole is communicated with the thin oil cavity and the inner medium cavity respectively. By adopting a double-piston structure, self-balance of inner and outer pressure difference is realized; pressure pulse in a whole working process of the protector is effectively reduced and the operational reliability is improved, so that the piston type protector can guarantee that the motor is normally and stably operated for a long time.
Description
Technical field
The present invention relates to down-hole equipment technical field of motors, particularly relate to a kind of piston type protector being applicable to down-hole equipment motor.
Background technology
Under motor is in high temperature and high pressure environment when underground work, high temperature makes motor internal media expansion, and the hyperbaric environment of outside motor also makes the inside and outside portion of motor produce very large pressure reduction, the existence of the huge pressure reduction of the expansion of interior media and inside and outside makes motor cannot realize sealing, also can produce huge destruction to the structure member of motor simultaneously.Therefore, usually can arrange protector at the motor of underground work, the Main Function of protector is exactly balance motor inside and the pressure of outside motor, makes motor inside and outside portion pressure reduction diminish or there is not pressure reduction.
Publication number is CN201726224U, publication date is that the Chinese patent literature of on 01 26th, 2011 discloses a kind of metal bellow type high-temperature motor protector, comprise top connection, lower contact, above lower contact, thrust shaft block is installed, above thrust shaft block, thrust bearing is installed, transition joint is had above thrust bearing, metal bellows shoe cream room is installed above transition joint, it is characterized in that: described metal bellows shoe cream room comprises and protects central siphon, protect the connection of central siphon bottom thread and protect central siphon pipe nipple, protect central siphon pipe nipple has and make to protect the oblique through hole be interlinked to the outside in central siphon, the convex annular of protecting central siphon pipe nipple excircle is fixed with large bellows, the cover plate relative to protecting central siphon and can sliding is fixed with above large bellows, cover plate upper surface is fixed with small corrugated pipe, positioning sleeve is fixed with above small corrugated pipe, positioning sleeve is enclosed within the upper end protecting central siphon, large bellows and small corrugated pipe and the ring cavity protected between central siphon are shoe cream room.
Metal bellow type high-temperature motor protector disclosed in this patent documentation, large bellows be fixed on protect central siphon pipe nipple excircle convex annular on, securing cover plate above large bellows, small corrugated pipe is fixed in cover plate upper surface, this structure, its balance inside and outside differential pressure promotes cover plate by large bellows to realize, the effect of small corrugated pipe is quite limited, because motor is in high temperature and high pressure environment for a long time, after using a period of time, easily gap is produced between large bellows and cover plate, inside and outside differential pressure is caused to be difficult to realize self-balancing, protector is caused to lose protective effect, affect the normal operation of motor.
Publication number is CN203488422U; publication date is that the Chinese patent literature of on 03 19th, 2014 discloses a kind of self-action and exempts from oiling submersible electric motor protector; comprise the lower contact being positioned at protector lower end and being connected with submersible electric machine with oil; it is characterized in that: in lower contact inner chamber, have fixing baffle plate on center shaft; baffle plate bottom connects piston by spring; piston is fixed with O ring, ball-and-seat is arranged at the axis hole oil circuit bottom of lower contact.
Disclosed in this patent documentation, self-action exempts from oiling submersible electric motor protector; because structural design is unreasonable; especially connect the spring of piston, after Long-Time Service, elastic force declines; piston is difficult under the action of the spring by O ring seal annular space oil circuit; and external agency easily directly contacts O ring, causes O ring to damage, causes inside and outside differential pressure to be difficult to realize self-balancing; and then make protector lose protective effect, affect the normal operation of motor.
Summary of the invention
The present invention is in order to overcome the defect of above-mentioned prior art; a kind of piston type protector is provided; the present invention passes through dual-piston structure; achieve the self-balancing of inside and outside differential pressure; and the pressure fluctuation effectively reduced in the whole protector course of work; improve functional reliability, thus the operation of the long-time normal table of motor can be ensured.
The present invention is achieved through the following technical solutions:
A kind of piston type protector, comprise housing and the bearing being connected interior media chamber, bearing is fixed on housing, it is characterized in that: also comprise the piston rod be fixed on bearing, piston rod is positioned at housing, described piston rod with between housing by the second piston that sealing ring is connected with first piston and communicates with external agency chamber, described first piston, second piston, housing and piston rod surround adapter cavity, described first piston, housing, piston rod and bearing surround thin oil chamber, described bearing has oil through, oil through is communicated with interior media chamber with thin oil chamber respectively.
Described adapter cavity is built with flexible member.
Described flexible member is spring, and one end of spring is connected with first piston, and the other end of spring is connected with the second piston.
Described flexible member is gas, and gas is full of adapter cavity.
Described flexible member is spring and gas.
Have outer ring seal grease chamber between described second piston and housing, between the second piston and piston rod, have inner ring seal grease chamber.
Described second piston be provided with the outer ring anti-soil ring contacted with external agency chamber between housing, outer ring anti-soil ring set is on the second piston, second piston be provided with the inner ring anti-soil ring contacted with external agency chamber between piston rod, inner ring anti-soil ring set is on the piston rod.
The inside of described piston rod is provided with flowing lumen, and flowing lumen is communicated with interior media chamber with external agency chamber respectively.
Described housing and bearing are threaded connection or Flange joint.
On described bearing, cover has O ring, and bearing is fixedly connected with by flange with housing.
Operation principle of the present invention is as follows:
Motor is in the process of going into the well; along with the rising of external agency pressure and temperature; due to the high compressibility of flexible member in the increase of external agency cavity pressure and adapter cavity; second piston will move to the right, meanwhile, enter the oil in thin oil chamber by oil through; owing to having thermal expansivity; promotion first piston is moved to the left, make external agency chamber, adapter cavity, thin oil chamber and interior media chamber pressure reach autobalance, realize protector and the pressure compensation of motor protected.
Motor is going out in well process, along with the reduction of external agency pressure and temperature, gas in adapter cavity will constantly expand, oil volume simultaneously in thin oil chamber also can reduce, now the volume of adapter cavity constantly increases, second piston is constantly moved to the left, first piston constantly moves to the right, realize external agency chamber, adapter cavity, the pressure balance in thin oil chamber and interior media chamber, external agency on second piston is also released gradually, the pollutant of shell inner surface and piston rod surface is also scraped by outer ring anti-soil ring and inner ring anti-soil ring and is wiped clean, effective preventing pollution thing causes damage to sealing ring.
Beneficial effect of the present invention is mainly manifested in the following aspects:
One, the present invention, piston rod is positioned at housing, by the second piston that sealing ring is connected with first piston and communicates with external agency chamber between piston rod with housing, first piston, second piston, housing and piston rod surround adapter cavity, first piston, housing, piston rod and bearing surround thin oil chamber, bearing has oil through, oil through is communicated with interior media chamber with thin oil chamber respectively, form dual-piston structure, along with the rising of external agency pressure and temperature, due to the increase of external agency cavity pressure, second piston will move to the right, simultaneously, the oil in thin oil chamber is entered by oil through, owing to having thermal expansivity, promotion first piston is moved to the left, make external agency chamber, adapter cavity, the pressure in thin oil chamber and interior media chamber reaches autobalance, realize protector to protect the pressure compensation of motor, as a complete technical scheme, pass through dual-piston structure, effectively reduce the pressure fluctuation in the whole protector course of work, improve functional reliability, thus the operation of the long-time normal table of motor can be ensured.
Two, the present invention, adapter cavity is built with flexible member, and flexible member has high compressibility, and when external agency pressure and temperature constantly raises, external agency cavity pressure increases thereupon, and the second piston will move to the right; Due to the thermal expansivity of oil in thin oil chamber and the high compressibility of flexible member; first piston can be promoted fast to move to the left; make external agency chamber, adapter cavity, thin oil chamber and interior media chamber pressure reach self-balancing, thus protection motor normally runs.
Three, the present invention, flexible member is spring, one end of spring is connected with first piston, the other end of spring is connected with the second piston, spring has good elastic acting force, under pressure, first piston and the second piston easily can be impelled to produce in opposite directions or reverse motions, be convenient to realize pressure balance.
Four, the present invention, flexible member is gas, and gas is full of adapter cavity, because gas can fill whole adapter cavity, in whole adapter cavity, gas density uniformity is good, acts on power on first piston and the second piston comparatively even, thus can be stable realize pressure self-balancing.
Five, the present invention, flexible member is spring and gas, jointly coordinates by adopting spring and gas; possesses high compressibility; greatly improve the speed realizing pressure self-balancing, effectively reduce the pressure fluctuation in the whole protector course of work, improve functional reliability.
Six, the present invention; outer ring seal grease chamber is had between second piston and housing; inner ring seal grease chamber is had between second piston and piston rod; can effectively prevent the particle in external agency from directly contacting sealing ring on first piston, the second piston and piston rod; protection sealing ring is not damaged, thus ensures that pressure self-balancing can well realize.
Seven, the present invention, second piston be provided with the outer ring anti-soil ring contacted with external agency chamber between housing, outer ring anti-soil ring set is on the second piston, second piston be provided with the inner ring anti-soil ring contacted with external agency chamber between piston rod, inner ring anti-soil ring set on the piston rod, inner ring anti-soil ring and outer ring anti-soil ring have good resistance to wear, depart from the process of high temperature, hyperbaric environment at motor, effectively can remove inner walls and piston rod surface pollutant, effectively prevent the pollutant in external agency from causing damage to sealing ring.
Eight, the present invention; the inside of piston rod is provided with flowing lumen; flowing lumen is communicated with interior media chamber with external agency chamber respectively; external agency can be communicated with the interior media in interior media chamber by flowing lumen; can prevent interior external pressure from sharply expanding; protection sealing ring is injury-free, extends the useful life of sealing ring.
Nine, the present invention, housing and bearing are threaded connection or Flange joint, housing can not only be made firmly to be connected with bearing, and dismounting and change are quite convenient.
Ten, the present invention, on bearing, cover has O ring, and bearing is fixedly connected with by flange with housing, by arranging O ring on bearing, can make bearing and housing the linking together of close and firm more.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the embodiment of the present invention 2;
Fig. 3 is the structural representation of the embodiment of the present invention 3;
Fig. 4 is the structural representation of the embodiment of the present invention 4;
Fig. 5 is the structural representation of the embodiment of the present invention 5;
Fig. 6 is the structural representation of the embodiment of the present invention 6;
Mark in figure: 1, housing, 2, interior media chamber, 3, bearing, 4, piston rod, 5, first piston, 6, external agency chamber, 7, the second piston, 8, adapter cavity, 9, thin oil chamber, 10, oil through, 11, flexible member, 12, outer ring seal grease chamber, 13, inner ring seal grease chamber, 14, outer ring anti-soil ring, 15, inner ring anti-soil ring, 16, flowing lumen, 17, O ring.
Embodiment
Embodiment 1
See Fig. 1, a kind of piston type protector, comprise housing 1 and the bearing 3 being connected interior media chamber 2, bearing 3 is fixed on housing 1, also comprise the piston rod 4 be fixed on bearing 3, piston rod 4 is positioned at housing 1, described piston rod 4 with between housing 1 by the second piston 7 that sealing ring is connected with first piston 5 and communicates with external agency chamber 6, described first piston 5, second piston 7, housing 1 and piston rod 4 surround adapter cavity 8, described first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil chamber 9, described bearing 3 has oil through 10, oil through 10 is communicated with interior media chamber 2 with thin oil chamber 9 respectively.
The present embodiment is the most basic execution mode, piston rod is positioned at housing, by the second piston that sealing ring is connected with first piston and communicates with external agency chamber between piston rod with housing, first piston, second piston, housing and piston rod surround adapter cavity, first piston, housing, piston rod and bearing surround thin oil chamber, bearing has oil through, oil through is communicated with interior media chamber with thin oil chamber respectively, form dual-piston structure, along with the rising of external agency pressure and temperature, due to the increase of external agency cavity pressure, second piston will move to the right, simultaneously, the oil in thin oil chamber is entered by oil through, owing to having thermal expansivity, promotion first piston is moved to the left, make external agency chamber, adapter cavity, the pressure in thin oil chamber and interior media chamber reaches autobalance, realize protector to protect the pressure compensation of motor, as a complete technical scheme, pass through dual-piston structure, effectively reduce the pressure fluctuation in the whole protector course of work, improve functional reliability, thus the operation of the long-time normal table of motor can be ensured.
Embodiment 2
See Fig. 2, a kind of piston type protector, comprise housing 1 and the bearing 3 being connected interior media chamber 2, bearing 3 is fixed on housing 1, also comprise the piston rod 4 be fixed on bearing 3, piston rod 4 is positioned at housing 1, described piston rod 4 with between housing 1 by the second piston 7 that sealing ring is connected with first piston 5 and communicates with external agency chamber 6, described first piston 5, second piston 7, housing 1 and piston rod 4 surround adapter cavity 8, described first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil chamber 9, described bearing 3 has oil through 10, oil through 10 is communicated with interior media chamber 2 with thin oil chamber 9 respectively.
Described adapter cavity 8 is built with flexible member 11.
Described flexible member 11 is spring, and one end of spring is connected with first piston 5, and the other end of spring is connected with the second piston 7.
The present embodiment is a better embodiment, and adapter cavity is built with flexible member, and flexible member has high compressibility, and when external agency pressure and temperature constantly raises, external agency cavity pressure increases thereupon, and the second piston will move to the right; Due to the thermal expansivity of oil in thin oil chamber and the high compressibility of flexible member; first piston can be promoted fast to move to the left; make external agency chamber, adapter cavity, thin oil chamber and interior media chamber pressure reach self-balancing, thus protection motor normally runs.Flexible member is spring, and one end of spring is connected with first piston, and the other end of spring is connected with the second piston, spring has good elastic acting force, under pressure, first piston and the second piston easily can be impelled to produce in opposite directions or reverse motions, be convenient to realize pressure balance.
Embodiment 3
See Fig. 3, a kind of piston type protector, comprise housing 1 and the bearing 3 being connected interior media chamber 2, bearing 3 is fixed on housing 1, also comprise the piston rod 4 be fixed on bearing 3, piston rod 4 is positioned at housing 1, described piston rod 4 with between housing 1 by the second piston 7 that sealing ring is connected with first piston 5 and communicates with external agency chamber 6, described first piston 5, second piston 7, housing 1 and piston rod 4 surround adapter cavity 8, described first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil chamber 9, described bearing 3 has oil through 10, oil through 10 is communicated with interior media chamber 2 with thin oil chamber 9 respectively.
Described adapter cavity 8 is built with flexible member 11.
Described flexible member 11 is gas, and gas is full of adapter cavity 8.
The present embodiment is another better embodiment, flexible member is gas, gas is full of adapter cavity, because gas can fill whole adapter cavity, in whole adapter cavity, gas density uniformity is good, act on power on first piston and the second piston comparatively even, thus can be stable realize pressure self-balancing.
Embodiment 4
See Fig. 4, a kind of piston type protector, comprise housing 1 and the bearing 3 being connected interior media chamber 2, bearing 3 is fixed on housing 1, also comprise the piston rod 4 be fixed on bearing 3, piston rod 4 is positioned at housing 1, described piston rod 4 with between housing 1 by the second piston 7 that sealing ring is connected with first piston 5 and communicates with external agency chamber 6, described first piston 5, second piston 7, housing 1 and piston rod 4 surround adapter cavity 8, described first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil chamber 9, described bearing 3 has oil through 10, oil through 10 is communicated with interior media chamber 2 with thin oil chamber 9 respectively.
Described adapter cavity 8 is built with flexible member 11.
Described flexible member 11 is spring and gas.
The present embodiment is another better embodiment; flexible member is spring and gas; jointly coordinate by adopting spring and gas; possesses high compressibility; greatly improve the speed realizing pressure self-balancing; effectively reduce the pressure fluctuation in the whole protector course of work, improve functional reliability.
Embodiment 5
See Fig. 5, a kind of piston type protector, comprise housing 1 and the bearing 3 being connected interior media chamber 2, bearing 3 is fixed on housing 1, also comprise the piston rod 4 be fixed on bearing 3, piston rod 4 is positioned at housing 1, described piston rod 4 with between housing 1 by the second piston 7 that sealing ring is connected with first piston 5 and communicates with external agency chamber 6, described first piston 5, second piston 7, housing 1 and piston rod 4 surround adapter cavity 8, described first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil chamber 9, described bearing 3 has oil through 10, oil through 10 is communicated with interior media chamber 2 with thin oil chamber 9 respectively.
Described adapter cavity 8 is built with flexible member 11.
Described flexible member 11 is spring and gas.
Have between described second piston 7 and housing 1 between outer ring seal grease chamber 12, second piston 7 and piston rod 4 and have inner ring seal grease chamber 13.
The present embodiment is another better embodiment; outer ring seal grease chamber is had between second piston and housing; inner ring seal grease chamber is had between second piston and piston rod; can effectively prevent the particle in external agency from directly contacting sealing ring on first piston, the second piston and piston rod; protection sealing ring is not damaged, thus ensures that pressure self-balancing can well realize.
Embodiment 6
See Fig. 6, a kind of piston type protector, comprise housing 1 and the bearing 3 being connected interior media chamber 2, bearing 3 is fixed on housing 1, also comprise the piston rod 4 be fixed on bearing 3, piston rod 4 is positioned at housing 1, described piston rod 4 with between housing 1 by the second piston 7 that sealing ring is connected with first piston 5 and communicates with external agency chamber 6, described first piston 5, second piston 7, housing 1 and piston rod 4 surround adapter cavity 8, described first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil chamber 9, described bearing 3 has oil through 10, oil through 10 is communicated with interior media chamber 2 with thin oil chamber 9 respectively.
Described adapter cavity 8 is built with flexible member 11.
Described flexible member 11 is spring and gas.
Have between described second piston 7 and housing 1 between outer ring seal grease chamber 12, second piston 7 and piston rod 4 and have inner ring seal grease chamber 13.
Described second piston 7 be provided with the outer ring anti-soil ring 14 contacted with external agency chamber 6 between housing 1, outer ring anti-soil ring 14 is enclosed within the second piston 7, second piston 7 be provided with the inner ring anti-soil ring 15 contacted with external agency chamber 6 between piston rod 4, inner ring anti-soil ring 15 is enclosed within piston rod 4.
The inside of described piston rod 4 is provided with flowing lumen 16, and flowing lumen 16 is communicated with interior media chamber 2 with external agency chamber 6 respectively.
Described housing 1 is threaded connection with bearing 3.
The present embodiment is another better embodiment, second piston be provided with the outer ring anti-soil ring contacted with external agency chamber between housing, outer ring anti-soil ring set is on the second piston, second piston be provided with the inner ring anti-soil ring contacted with external agency chamber between piston rod, inner ring anti-soil ring set on the piston rod, inner ring anti-soil ring and outer ring anti-soil ring have good resistance to wear, depart from the process of high temperature, hyperbaric environment at motor, effectively can remove inner walls and piston rod surface pollutant, effectively prevent the pollutant in external agency from causing damage to sealing ring.The inside of piston rod is provided with flowing lumen; flowing lumen is communicated with interior media chamber with external agency chamber respectively, and external agency can be communicated with the interior media in interior media chamber by flowing lumen, can prevent interior external pressure from sharply expanding; protection sealing ring is injury-free, extends the useful life of sealing ring.Housing and bearing are threaded connection, and housing can not only be made firmly to be connected with bearing, and dismounting and change are quite convenient.
Embodiment 7
See Fig. 6, a kind of piston type protector, comprise housing 1 and the bearing 3 being connected interior media chamber 2, bearing 3 is fixed on housing 1, also comprise the piston rod 4 be fixed on bearing 3, piston rod 4 is positioned at housing 1, described piston rod 4 with between housing 1 by the second piston 7 that sealing ring is connected with first piston 5 and communicates with external agency chamber 6, described first piston 5, second piston 7, housing 1 and piston rod 4 surround adapter cavity 8, described first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil chamber 9, described bearing 3 has oil through 10, oil through 10 is communicated with interior media chamber 2 with thin oil chamber 9 respectively.
Described adapter cavity 8 is built with flexible member 11.
Described flexible member 11 is spring and gas.
Have between described second piston 7 and housing 1 between outer ring seal grease chamber 12, second piston 7 and piston rod 4 and have inner ring seal grease chamber 13.
Described second piston 7 be provided with the outer ring anti-soil ring 14 contacted with external agency chamber 6 between housing 1, outer ring anti-soil ring 14 is enclosed within the second piston 7, second piston 7 be provided with the inner ring anti-soil ring 15 contacted with external agency chamber 6 between piston rod 4, inner ring anti-soil ring 15 is enclosed within piston rod 4.
The inside of described piston rod 4 is provided with flowing lumen 16, and flowing lumen 16 is communicated with interior media chamber 2 with external agency chamber 6 respectively.
On described bearing 3, cover has O ring 17, and bearing 3 is fixedly connected with by flange with housing 1.
The present embodiment is preferred forms, piston rod is positioned at housing, by the second piston that sealing ring is connected with first piston and communicates with external agency chamber between piston rod with housing, first piston, second piston, housing and piston rod surround adapter cavity, first piston, housing, piston rod and bearing surround thin oil chamber, bearing has oil through, oil through is communicated with interior media chamber with thin oil chamber respectively, form dual-piston structure, along with the rising of external agency pressure and temperature, due to the increase of external agency cavity pressure, second piston will move to the right, simultaneously, the oil in thin oil chamber is entered by oil through, owing to having thermal expansivity, promotion first piston is moved to the left, make external agency chamber, adapter cavity, the pressure in thin oil chamber and interior media chamber reaches autobalance, realize protector to protect the pressure compensation of motor, as a complete technical scheme, pass through dual-piston structure, effectively reduce the pressure fluctuation in the whole protector course of work, improve functional reliability, thus the operation of the long-time normal table of motor can be ensured.On bearing, cover has O ring, and bearing is fixedly connected with by flange with housing, by arranging O ring on bearing, can make bearing and housing the linking together of close and firm more.
Claims (10)
1. a piston type protector, comprise housing (1) and the bearing (3) being connected interior media chamber (2), bearing (3) is fixed on housing (1), it is characterized in that: also comprise the piston rod (4) be fixed on bearing (3), piston rod (4) is positioned at housing (1), by the second piston (7) that sealing ring is connected with first piston (5) and communicates with external agency chamber (6) between described piston rod (4) with housing (1), described first piston (5), second piston (7), housing (1) and piston rod (4) surround adapter cavity (8), described first piston (5), housing (1), piston rod (4) and bearing (3) surround thin oil chamber (9), described bearing (3) has oil through (10), oil through (10) is communicated with interior media chamber (2) with thin oil chamber (9) respectively.
2. a kind of piston type protector according to claim 1, is characterized in that: described adapter cavity (8) is built with flexible member (11).
3. a kind of piston type protector according to claim 2, is characterized in that: described flexible member (11) is spring, and one end of spring is connected with first piston (5), and the other end of spring is connected with the second piston (7).
4. a kind of piston type protector according to claim 2, is characterized in that: described flexible member (11) is gas, and gas is full of adapter cavity (8).
5. a kind of piston type protector according to claim 2, is characterized in that: described flexible member (11) is spring and gas.
6. a kind of piston type protector according to claim 2; it is characterized in that: have outer ring seal grease chamber (12) between described second piston (7) and housing (1), between the second piston (7) and piston rod (4), have inner ring seal grease chamber (13).
7. a kind of piston type protector according to claim 6; it is characterized in that: described second piston (7) be provided with outer ring anti-soil ring (14) contacted with external agency chamber (6) between housing (1); outer ring anti-soil ring (14) is enclosed within the second piston (7); be provided with the inner ring anti-soil ring (15) contacted with external agency chamber (6) between second piston (7) with piston rod (4), inner ring anti-soil ring (15) is enclosed within piston rod (4).
8. a kind of piston type protector according to claim 7, is characterized in that: the inside of described piston rod (4) is provided with flowing lumen (16), and flowing lumen (16) is communicated with interior media chamber (2) with external agency chamber (6) respectively.
9. a kind of piston type protector according to claim 1, is characterized in that: described housing (1) and bearing (3) are threaded connection or Flange joint.
10. a kind of piston type protector according to claim 9, is characterized in that: the upper cover of described bearing (3) has O ring (17), and bearing (3) is fixedly connected with by flange with housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014480.6A CN105515284B (en) | 2016-01-11 | 2016-01-11 | A kind of piston type protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014480.6A CN105515284B (en) | 2016-01-11 | 2016-01-11 | A kind of piston type protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105515284A true CN105515284A (en) | 2016-04-20 |
| CN105515284B CN105515284B (en) | 2018-05-04 |
Family
ID=55723030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610014480.6A Active CN105515284B (en) | 2016-01-11 | 2016-01-11 | A kind of piston type protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105515284B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3681629A (en) * | 1970-04-28 | 1972-08-01 | Jeumont Schneider | Electrical rectilinear-motion devices |
| CN201013355Y (en) * | 2007-03-27 | 2008-01-30 | 陈耕 | High temperature high-pressure hydraulic type automatic balancing arrangement |
| CN101639106A (en) * | 2009-08-25 | 2010-02-03 | 深圳市中车业成实业有限公司 | Piston-type hydro-pneumatic buffer |
| CN102761197A (en) * | 2012-07-11 | 2012-10-31 | 成都欧迅海洋工程装备科技有限公司 | Balancer and dynamic seal integrated structure |
| CN102761204A (en) * | 2012-07-11 | 2012-10-31 | 成都欧迅海洋工程装备科技有限公司 | Controller integrated deep sea motor |
| CN105207418A (en) * | 2015-09-07 | 2015-12-30 | 中国石油天然气集团公司 | Downhole motor protector and application thereof |
| CN205544801U (en) * | 2016-01-11 | 2016-08-31 | 东方电气集团东方电机有限公司 | Piston type protector |
-
2016
- 2016-01-11 CN CN201610014480.6A patent/CN105515284B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3681629A (en) * | 1970-04-28 | 1972-08-01 | Jeumont Schneider | Electrical rectilinear-motion devices |
| CN201013355Y (en) * | 2007-03-27 | 2008-01-30 | 陈耕 | High temperature high-pressure hydraulic type automatic balancing arrangement |
| CN101639106A (en) * | 2009-08-25 | 2010-02-03 | 深圳市中车业成实业有限公司 | Piston-type hydro-pneumatic buffer |
| CN102761197A (en) * | 2012-07-11 | 2012-10-31 | 成都欧迅海洋工程装备科技有限公司 | Balancer and dynamic seal integrated structure |
| CN102761204A (en) * | 2012-07-11 | 2012-10-31 | 成都欧迅海洋工程装备科技有限公司 | Controller integrated deep sea motor |
| CN105207418A (en) * | 2015-09-07 | 2015-12-30 | 中国石油天然气集团公司 | Downhole motor protector and application thereof |
| CN205544801U (en) * | 2016-01-11 | 2016-08-31 | 东方电气集团东方电机有限公司 | Piston type protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105515284B (en) | 2018-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102780303B (en) | Motor shaft sealing structure with high protection grade | |
| CN101860108B (en) | Metal bellow type high-temperature motor protector | |
| CN104500391A (en) | Double-end-face integrated packaging washing mechanical seal of rotor pump | |
| CN202737637U (en) | Motor shaft sealing structure at high protection grade | |
| CN202392110U (en) | Shaft sealing device of horizontal scraper centrifuge | |
| CN204628265U (en) | A kind of sealed type roller bearing | |
| CN105515284A (en) | Piston type protector | |
| CN205544801U (en) | Piston type protector | |
| CN105507808A (en) | Underground drilling tool motor | |
| CN204253626U (en) | Full coverage formula shield bearing | |
| CN102806219A (en) | Universal tube cleaner indicator | |
| CN202300967U (en) | One-stage seal electrical submersible pump protector with one independent settling chamber | |
| CN202300301U (en) | Pressure balancing device | |
| CN104121441A (en) | Mass flow water cooling and rotating device | |
| CN203847864U (en) | Split rotating joint universal to cold and hot media | |
| CN201726224U (en) | Metal bellows type high-temperature motor protector | |
| CN203051774U (en) | Oil seal structure for downhole power tool | |
| CN205532268U (en) | Drilling tool motor | |
| CN205350395U (en) | High pressure gas circuit sound conversion equipment | |
| CN205446148U (en) | Corrugated metal pipe submersible motor protector | |
| CN104006243A (en) | High-temperature high-speed rotary connector | |
| CN105515256A (en) | Spindle sealing system for motor working under high-temperature or high-pressure environment | |
| CN220622733U (en) | Sealing assembly for rotating shaft | |
| CN105604487A (en) | O-shaped rubber ring-inlaid X-shaped composite sealing structure of roller cone bit | |
| CN205207679U (en) | Carbocycle seal structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |