CN105515284B - A kind of piston type protector - Google Patents
A kind of piston type protector Download PDFInfo
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- CN105515284B CN105515284B CN201610014480.6A CN201610014480A CN105515284B CN 105515284 B CN105515284 B CN 105515284B CN 201610014480 A CN201610014480 A CN 201610014480A CN 105515284 B CN105515284 B CN 105515284B
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- piston rod
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- 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
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Abstract
The invention discloses a kind of piston type protector, belongs to down-hole equipment technical field of motors, including the bearing of housing and connection interior media chamber, and bearing is fixed on housing, it is characterised in that：Further include the piston rod being fixed on bearing, piston rod is located in housing, first piston and the second piston communicated with external agency chamber are connected with by sealing ring between the piston rod and housing, the first piston, second piston, housing and piston rod surround adapter cavity, the first piston, housing, piston rod and bearing surround thin oil chamber, oil-through-hole is provided with the bearing, oil-through-hole is connected with thin oil chamber and interior media chamber respectively.The present invention realizes the self-balancing of inside and outside differential pressure by dual-piston structure, and effectively reduces the pressure fluctuation in the whole protector course of work, functional reliability is improved, so as to ensure the operation of motor long-time normal table.
Description
Technical field
The present invention relates to down-hole equipment technical field of motors, more particularly to a kind of piston suitable for down-hole equipment motor
Formula protector.
Background technology
Motor in underground work under high temperature and high pressure environment, high temperature makes motor internal media expansion, and outside motor
The hyperbaric environment in portion also makes the inside and outside portion of motor produce very big pressure difference, and the expansion of interior media and the huge pressure difference in inside and outside are deposited
Motor can not be realized sealing, while huge destruction can be also produced to the structure member of motor.Therefore, in underground work
Motor can usually set protector, and the main function of protector is exactly the pressure inside balance motor with outside motor, makes motor
Inside and outside portion's pressure difference diminishes or there is no pressure difference.
Publication No. CN 201726224U, publication date are that the Chinese patent literature of on 01 26th, 2011 discloses one kind
Metal bellow type high-temperature motor protector, including top connection, lower contact, lower contact top are provided with thrust shaft block, thrust
Thrust bearing is installed above bearing block, has transition joint above thrust bearing, metal bellows is installed above transition joint
Shoe cream room, it is characterised in that：The metal bellows shoe cream room includes shield central siphon, and shield central siphon bottom thread connection shield central siphon is short
Section, protects on central siphon pipe nipple and is provided with the oblique through hole for making to be interlinked to the outside in shield central siphon, protects in the convex annular of central siphon pipe nipple excircle and is fixed with
Big ripple pipe, big ripple pipe are fixedly arranged above the cover board that can be slided relative to shield central siphon, and cover board upper surface is fixed with ripplet
Pipe, small corrugated pipe are fixedly arranged above positioning sleeve, and positioning sleeve is sleeved on the upper end of shield central siphon, big ripple pipe and small corrugated pipe and shield central siphon
Between ring cavity be shoe cream room.
Metal bellow type high-temperature motor protector disclosed in the patent document, big ripple pipe are fixed on outside shield central siphon pipe nipple
In the convex annular of circumference, small corrugated pipe is fixed in fixed cover board above big ripple pipe, cover board upper surface, this structure, in it is balanced
External differential is to promote cover board to realize that the effect of small corrugated pipe is fairly limited, since motor is in high temperature for a long time by big ripple pipe
In hyperbaric environment, after a period of time, gap is easily produced between big ripple pipe and cover board, causes inside and outside differential pressure to be difficult to realize
Self-balancing, causes protector to lose protective effect, influences the normal operation of motor.
Publication No. CN 203488422U, publication date are that the Chinese patent literature of on 03 19th, 2014 discloses one kind
Self-action exempts from oiling submersible electric motor protector, including the lower contact being connected positioned at protector lower end with submersible motor, it is characterized in that：
There is fixed baffle on center shaft in lower contact inner cavity, baffle lower part connects piston by spring, O rings is fixed with piston,
Ball-and-seat is arranged at the axis hole oil circuit lower part of lower contact.
Self-action disclosed in the patent document exempts from oiling submersible electric motor protector, since structure design is unreasonable, especially
The spring of piston is connected, after long-time service, elastic force declines, and piston is difficult under the action of the spring by O ring seals annular space oil
Road, and external agency easily directly contacts O rings, causes O rings to damage, causes inside and outside differential pressure to be difficult to realize self-balancing, and then make guarantor
Shield device loses protective effect, influences the normal operation of motor.
The content of the invention
The defects of present invention is in order to overcome the above-mentioned prior art, there is provided a kind of piston type protector, the present invention pass through dual-active
Plug structure, realizes the self-balancing of inside and outside differential pressure, and effectively reduces the pressure fluctuation in the whole protector course of work, improves
Functional reliability, so as to ensureing the operation of motor long-time normal table.
The present invention is achieved through the following technical solutions：
A kind of piston type protector, including the bearing of housing and connection interior media chamber, bearing are fixed on housing, it is special
Sign is：The piston rod being fixed on bearing is further included, piston rod is located in housing, by close between the piston rod and housing
Seal is connected with first piston and the second piston communicated with external agency chamber, the first piston, second piston, housing and work
Stopper rod surrounds adapter cavity, and the first piston, housing, piston rod and bearing surround thin oil chamber, oil-through-hole are provided with the bearing,
Oil-through-hole is connected with thin oil chamber and interior media chamber respectively.
The adapter cavity is built-in to have elastic component.
The flexible member is spring, and one end of spring is connected with first piston, and the other end and the second piston of spring connect
Connect.
The flexible member is gas, and gas is full of adapter cavity.
The flexible member is spring and gas.
Outer ring seal grease chamber is provided between the second piston and housing, inner ring is provided between second piston and piston rod
Seal grease chamber.
The outer ring anti-pollution ring contacted with external agency chamber, outer ring anti-pollution ring set are provided between the second piston and housing
The inner ring anti-pollution ring contacted with external agency chamber, inner ring anti-pollution are provided with second piston, between second piston and piston rod
Ring set is on the piston rod.
The piston rod is internally provided with flowing lumen, and flowing lumen is connected with external agency chamber and interior media chamber respectively.
The housing is connected through a screw thread with bearing or flanged joint.
O rings are cased with the bearing, bearing is fixedly connected with housing by flange.
The operation principle of the present invention is as follows：
Motor is during going into the well, with the rise of external agency pressure and temperature, due to the increasing of external agency cavity pressure
Be subject to and adapter cavity in flexible member high compressibility, second piston will move to the right, meanwhile, entered by oil-through-hole
The oil of thin oil intracavitary, due to thermal expansivity, first piston will be promoted to move to the left, makes external agency chamber, adapter cavity, dilute
The pressure of oil pocket and interior media chamber reaches autobalance, realizes that protector protects the pressure compensation of motor.
Motor is during well is gone out, and with the reduction of external agency pressure and temperature, the gas in adapter cavity will be constantly swollen
It is swollen, while the oil volume of thin oil intracavitary can also reduce, the volume of adapter cavity is continuously increased at this time, makes second piston constantly to the left
Mobile, first piston constantly moves to the right, realizes that the pressure of external agency chamber, adapter cavity, thin oil chamber and interior media chamber is put down
Weigh, the external agency in second piston is also gradually released, and the pollutant of shell inner surface and piston rod surface is also resisted by outer ring
Dirty ring and inner ring anti-pollution ring, which is scraped, to be wiped clean, and effectively prevents pollutant from causing to damage to sealing ring.
Beneficial effects of the present invention are mainly manifested in the following aspects：
First, of the invention, piston rod is located in housing, between piston rod and housing by sealing ring be connected with first piston and
The second piston communicated with external agency chamber, first piston, second piston, housing and piston rod surround adapter cavity, first piston,
Housing, piston rod and bearing surround thin oil chamber, and oil-through-hole is provided with bearing, and oil-through-hole connects with thin oil chamber and interior media chamber respectively
It is logical, dual-piston structure is formed, with the rise of external agency pressure and temperature, due to the increase of external agency cavity pressure, second
Piston will move to the right, meanwhile, the oil by oil-through-hole into thin oil intracavitary, since with thermal expansivity, first will be promoted
Piston moves to the left, the pressure of external agency chamber, adapter cavity, thin oil chamber and interior media chamber is reached autobalance, realizes
Protector protects the pressure compensation of motor, as a complete technical solution, by dual-piston structure, effectively reduces whole
Pressure fluctuation in a protector course of work, improves functional reliability, so as to ensure motor long-time normal table
Operation.
2nd, of the invention, adapter cavity is built-in to have elastic component, and flexible member has high compressibility, when external agency pressure
When power and temperature constantly raise, external agency cavity pressure increases therewith, and second piston will move to the right；Due to thin oil intracavitary oil
Thermal expansivity and flexible member high compressibility, quickly first piston can be promoted to move to the left, make exterior Jie
Matter chamber, adapter cavity, the pressure of thin oil chamber and interior media chamber reach self-balancing, so as to protect motor normal operation.
3rd, of the invention, flexible member is spring, and one end of spring is connected with first piston, the other end of spring and second
Piston connects, and spring has good elastic acting force, under pressure, can easily promote first piston and second piston
Opposite or reverse motions are produced, are easy to implement pressure balance.
4th, of the invention, flexible member is gas, and gas is full of adapter cavity, whole since gas can fill whole adapter cavity
Gas density uniformity is good in a adapter cavity, and the power acted on first piston and second piston is more uniform, so as to stabilization
Realize pressure self-balancing.
5th, of the invention, flexible member is spring and gas, is coordinated jointly by using spring and gas, and possessing height can
Compressibility, greatly improves the speed for realizing pressure self-balancing, effectively reduces the pressure in the whole protector course of work
Pulsation, improves functional reliability.
6th, it is of the invention, outer ring seal grease chamber is provided between second piston and housing, is opened between second piston and piston rod
Have inner ring seal grease chamber, can effectively prevent the particulate matter in external agency directly contact first piston, second piston and
Sealing ring on piston rod, protection sealing ring is without damage, so as to ensure that pressure self-balancing can be realized well.
7th, it is of the invention, the outer ring anti-pollution ring contacted with external agency chamber is provided between second piston and housing, outer ring resists
Dirty ring set is provided with the inner ring anti-pollution ring contacted with external agency chamber in second piston, between second piston and piston rod, interior
Enclose anti-pollution ring set on the piston rod, inner ring anti-pollution ring and outer ring anti-pollution ring have good wearability, depart from high temperature, height in motor
During pressure ring border, inner walls and piston rod surface pollutant can be effectively removed, effectively prevent the dirt in external agency
Dye thing causes to damage to sealing ring.
8th, of the invention, piston rod is internally provided with flowing lumen, flowing lumen respectively with external agency chamber and interior media chamber
Connection, external agency can be communicated by flowing lumen with the interior media in interior media chamber, can prevent that interior external pressure is drastically swollen
Swollen, protection sealing ring is injury-free, extends the service life of sealing ring.
9th, of the invention, housing is connected through a screw thread with bearing or flanged joint, and housing can not only be made firm with bearing
Connection, and dismounting and change is quite convenient.
Tenth, it is of the invention, O rings are cased with bearing, bearing is fixedly connected with housing by flange, by setting O on bearing
Ring, can make bearing with housing is even closer be securely attached to together with.
Brief description of the drawings
The present invention is described in further detail below in conjunction with specification drawings and specific embodiments, wherein：
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of the embodiment of the present invention 2；
Fig. 3 is the structure diagram of the embodiment of the present invention 3；
Fig. 4 is the structure diagram of the embodiment of the present invention 4；
Fig. 5 is the structure diagram of the embodiment of the present invention 5；
Fig. 6 is the structure diagram of the embodiment of the present invention 6；
Marked in figure：1st, housing, 2, interior media chamber, 3, bearing, 4, piston rod, 5, first piston, 6, external agency chamber,
7th, second piston, 8, adapter cavity, 9, thin oil chamber, 10, oil-through-hole, 11, flexible member, 12, outer ring seal grease chamber, 13, inner ring
Seal grease chamber, 14, outer ring anti-pollution ring, 15, inner ring anti-pollution ring, 16, flowing lumen, 17, O rings.
Embodiment
Embodiment 1
Referring to Fig. 1, a kind of piston type protector, including the bearing 3 of housing 1 and connection interior media chamber 2, bearing 3 are fixed
On housing 1, the piston rod 4 being fixed on bearing 3 is further included, piston rod 4 is located in housing 1, the piston rod 4 and housing 1
Between first piston 5 and the second piston 7 communicated with external agency chamber 6, the first piston 5, be connected with by sealing ring
Two pistons 7, housing 1 and piston rod 4 surround adapter cavity 8, and the first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil
Chamber 9, is provided with oil-through-hole 10 on the bearing 3, oil-through-hole 10 is connected with thin oil chamber 9 and interior media chamber 2 respectively.
The present embodiment is most basic embodiment, and piston rod is located in housing, passes through sealing between piston rod and housing
Circle is connected with first piston and the second piston communicated with external agency chamber, and first piston, second piston, housing and piston rod enclose
Into adapter cavity, first piston, housing, piston rod and bearing surround thin oil chamber, are provided with oil-through-hole on bearing, oil-through-hole respectively with it is dilute
Oil pocket is connected with interior media chamber, dual-piston structure is formed, with the rise of external agency pressure and temperature, due to external agency
The increase of cavity pressure, second piston will move to the right, meanwhile, the oil by oil-through-hole into thin oil intracavitary, due to heat
Dilatancy, will promote first piston to move to the left, makes the pressure of external agency chamber, adapter cavity, thin oil chamber and interior media chamber
Reach autobalance, realize that protector protects the pressure compensation of motor, as a complete technical solution, pass through double-piston
Structure, effectively reduces the pressure fluctuation in the whole protector course of work, improves functional reliability, so as to ensure electricity
The operation of captain's time normal table.
Embodiment 2
Referring to Fig. 2, a kind of piston type protector, including the bearing 3 of housing 1 and connection interior media chamber 2, bearing 3 are fixed
On housing 1, the piston rod 4 being fixed on bearing 3 is further included, piston rod 4 is located in housing 1, the piston rod 4 and housing 1
Between first piston 5 and the second piston 7 communicated with external agency chamber 6, the first piston 5, be connected with by sealing ring
Two pistons 7, housing 1 and piston rod 4 surround adapter cavity 8, and the first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil
Chamber 9, is provided with oil-through-hole 10 on the bearing 3, oil-through-hole 10 is connected with thin oil chamber 9 and interior media chamber 2 respectively.
The adapter cavity 8 is built-in to have elastic component 11.
The flexible member 11 is spring, and one end of spring is connected with first piston 5, the other end and second piston of spring
7 connections.
The present embodiment is a better embodiment, and adapter cavity is built-in to have elastic component, and flexible member has highly compressible
Property, when external agency pressure and temperature constantly raises, external agency cavity pressure increases therewith, and second piston will sidesway to the right
It is dynamic；Due to the thermal expansivity of thin oil intracavitary oil and the high compressibility of flexible member, can quickly promote first piston to
Left side is moved, and the pressure of external agency chamber, adapter cavity, thin oil chamber and interior media chamber is reached self-balancing, so as to protect motor
Normal operation.Flexible member is spring, and one end of spring is connected with first piston, and the other end of spring is connected with second piston,
Spring has good elastic acting force, under pressure, can easily promote first piston and second piston to produce in opposite directions
Or reverse motions, it is easy to implement pressure balance.
Embodiment 3
Referring to Fig. 3, a kind of piston type protector, including the bearing 3 of housing 1 and connection interior media chamber 2, bearing 3 are fixed
On housing 1, the piston rod 4 being fixed on bearing 3 is further included, piston rod 4 is located in housing 1, the piston rod 4 and housing 1
Between first piston 5 and the second piston 7 communicated with external agency chamber 6, the first piston 5, be connected with by sealing ring
Two pistons 7, housing 1 and piston rod 4 surround adapter cavity 8, and the first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil
Chamber 9, is provided with oil-through-hole 10 on the bearing 3, oil-through-hole 10 is connected with thin oil chamber 9 and interior media chamber 2 respectively.
The adapter cavity 8 is built-in to have elastic component 11.
The flexible member 11 is gas, and gas is full of adapter cavity 8.
The present embodiment is another better embodiment, and flexible member is gas, and gas is full of adapter cavity, since gas can
Fill whole adapter cavity, gas density uniformity is good in whole adapter cavity, act on power on first piston and second piston compared with
Uniformly, pressure self-balancing is realized so as to stable.
Embodiment 4
Referring to Fig. 4, a kind of piston type protector, including the bearing 3 of housing 1 and connection interior media chamber 2, bearing 3 are fixed
On housing 1, the piston rod 4 being fixed on bearing 3 is further included, piston rod 4 is located in housing 1, the piston rod 4 and housing 1
Between first piston 5 and the second piston 7 communicated with external agency chamber 6, the first piston 5, be connected with by sealing ring
Two pistons 7, housing 1 and piston rod 4 surround adapter cavity 8, and the first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil
Chamber 9, is provided with oil-through-hole 10 on the bearing 3, oil-through-hole 10 is connected with thin oil chamber 9 and interior media chamber 2 respectively.
The adapter cavity 8 is built-in to have elastic component 11.
The flexible member 11 is spring and gas.
The present embodiment is another better embodiment, and flexible member is spring and gas, is total to by using spring and gas
With coordinating, possess high compressibility, greatly improve the speed for realizing pressure self-balancing, effectively reduce whole protector
Pressure fluctuation in the course of work, improves functional reliability.
Embodiment 5
Referring to Fig. 5, a kind of piston type protector, including the bearing 3 of housing 1 and connection interior media chamber 2, bearing 3 are fixed
On housing 1, the piston rod 4 being fixed on bearing 3 is further included, piston rod 4 is located in housing 1, the piston rod 4 and housing 1
Between first piston 5 and the second piston 7 communicated with external agency chamber 6, the first piston 5, be connected with by sealing ring
Two pistons 7, housing 1 and piston rod 4 surround adapter cavity 8, and the first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil
Chamber 9, is provided with oil-through-hole 10 on the bearing 3, oil-through-hole 10 is connected with thin oil chamber 9 and interior media chamber 2 respectively.
The adapter cavity 8 is built-in to have elastic component 11.
The flexible member 11 is spring and gas.
Outer ring seal grease chamber 12 is provided between the second piston 7 and housing 1, is opened between second piston 7 and piston rod 4
There is inner ring seal grease chamber 13.
The present embodiment is another better embodiment, is provided with outer ring seal grease chamber between second piston and housing, second
Inner ring seal grease chamber is provided between piston and piston rod, can effectively prevent the particulate matter directly contact first in external agency
Sealing ring on piston, second piston and piston rod, protection sealing ring is without damage, so as to ensure that pressure self-balancing can be good
It is good to realize.
Embodiment 6
Referring to Fig. 6, a kind of piston type protector, including the bearing 3 of housing 1 and connection interior media chamber 2, bearing 3 are fixed
On housing 1, the piston rod 4 being fixed on bearing 3 is further included, piston rod 4 is located in housing 1, the piston rod 4 and housing 1
Between first piston 5 and the second piston 7 communicated with external agency chamber 6, the first piston 5, be connected with by sealing ring
Two pistons 7, housing 1 and piston rod 4 surround adapter cavity 8, and the first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil
Chamber 9, is provided with oil-through-hole 10 on the bearing 3, oil-through-hole 10 is connected with thin oil chamber 9 and interior media chamber 2 respectively.
The adapter cavity 8 is built-in to have elastic component 11.
The flexible member 11 is spring and gas.
Outer ring seal grease chamber 12 is provided between the second piston 7 and housing 1, is opened between second piston 7 and piston rod 4
There is inner ring seal grease chamber 13.
The outer ring anti-pollution ring 14 contacted with external agency chamber 6 is provided between the second piston 7 and housing 1, outer ring resists
Dirty ring 14 is sleeved in second piston 7, and the inner ring anti-pollution contacted with external agency chamber 6 is provided between second piston 7 and piston rod 4
Ring 15, inner ring anti-pollution ring 15 are sleeved on piston rod 4.
The piston rod 4 is internally provided with flowing lumen 16, flowing lumen 16 respectively with external agency chamber 6 and interior media chamber
2 connections.
The housing 1 is connected through a screw thread with bearing 3.
The present embodiment is another better embodiment, is provided with what is contacted with external agency chamber between second piston and housing
Outer ring anti-pollution ring, outer ring anti-pollution ring set is provided with second piston, between second piston and piston rod to be connect with external agency chamber
Tactile inner ring anti-pollution ring, on the piston rod, inner ring anti-pollution ring and outer ring anti-pollution ring have good wearability to inner ring anti-pollution ring set,
During motor departs from high temperature, hyperbaric environment, inner walls and piston rod surface pollutant can be effectively removed, it is effectively anti-
Only the pollutant in external agency causes to damage to sealing ring.Piston rod is internally provided with flowing lumen, flowing lumen respectively with outside
Portion's dielectric cavity is connected with interior media chamber, and external agency can be communicated by flowing lumen with the interior media in interior media chamber,
It can prevent interior external pressure from drastically expanding, protection sealing ring is injury-free, extends the service life of sealing ring.Housing passes through with bearing
It is threadedly coupled, housing can not only be made firmly to be connected with bearing, and dismounting and change is quite convenient.
Embodiment 7
Referring to Fig. 6, a kind of piston type protector, including the bearing 3 of housing 1 and connection interior media chamber 2, bearing 3 are fixed
On housing 1, the piston rod 4 being fixed on bearing 3 is further included, piston rod 4 is located in housing 1, the piston rod 4 and housing 1
Between first piston 5 and the second piston 7 communicated with external agency chamber 6, the first piston 5, be connected with by sealing ring
Two pistons 7, housing 1 and piston rod 4 surround adapter cavity 8, and the first piston 5, housing 1, piston rod 4 and bearing 3 surround thin oil
Chamber 9, is provided with oil-through-hole 10 on the bearing 3, oil-through-hole 10 is connected with thin oil chamber 9 and interior media chamber 2 respectively.
The adapter cavity 8 is built-in to have elastic component 11.
The flexible member 11 is spring and gas.
Outer ring seal grease chamber 12 is provided between the second piston 7 and housing 1, is opened between second piston 7 and piston rod 4
There is inner ring seal grease chamber 13.
The outer ring anti-pollution ring 14 contacted with external agency chamber 6 is provided between the second piston 7 and housing 1, outer ring resists
Dirty ring 14 is sleeved in second piston 7, and the inner ring anti-pollution contacted with external agency chamber 6 is provided between second piston 7 and piston rod 4
Ring 15, inner ring anti-pollution ring 15 are sleeved on piston rod 4.
The piston rod 4 is internally provided with flowing lumen 16, flowing lumen 16 respectively with external agency chamber 6 and interior media chamber
2 connections.
O rings 17 are cased with the bearing 3, bearing 3 is fixedly connected with housing 1 by flange.
The present embodiment is preferred forms, and piston rod is located in housing, is connected between piston rod and housing by sealing ring
First piston and the second piston communicated with external agency chamber are connected to, first piston, second piston, housing and piston rod surrounded
Cross chamber, first piston, housing, piston rod and bearing surround thin oil chamber, are provided with oil-through-hole on bearing, oil-through-hole respectively with thin oil chamber
Connected with interior media chamber, dual-piston structure is formed, with the rise of external agency pressure and temperature, due to external agency chamber pressure
The increase of power, second piston will move to the right, meanwhile, the oil by oil-through-hole into thin oil intracavitary, due to thermal expansion
Property, first piston will be promoted to move to the left, reach the pressure of external agency chamber, adapter cavity, thin oil chamber and interior media chamber
Autobalance, realizes that protector protects the pressure compensation of motor, as a complete technical solution, passes through double-piston knot
Structure, effectively reduces the pressure fluctuation in the whole protector course of work, improves functional reliability, so as to ensure motor
The operation of long-time normal table.O rings are cased with bearing, bearing is fixedly connected with housing by flange, by being set on bearing
Put O rings, can make bearing with housing is even closer be securely attached to together with.
Claims (9)
1. a kind of piston type protector, including housing（1）With connection interior media chamber（2）Bearing（3）, bearing（3）It is fixed on
Housing（1）On, it is characterised in that：Further include and be fixed on bearing（3）On piston rod（4）, piston rod（4）Positioned at housing（1）It is interior,
The piston rod（4）With housing（1）Between first piston is connected with by sealing ring（5）With with external agency chamber（6）Communicate
Second piston（7）, the first piston（5）, second piston（7）, housing（1）And piston rod（4）Surround adapter cavity（8）, it is described
First piston（5）, housing（1）, piston rod（4）And bearing（3）Surround thin oil chamber（9）, the bearing（3）On be provided with oil-through-hole
（10）, oil-through-hole（10）Respectively with thin oil chamber（9）With interior media chamber（2）Connection；The adapter cavity（8）It is built-in to have elastic component
（11）.
A kind of 2. piston type protector according to claim 1, it is characterised in that：The flexible member（11）For spring,
One end of spring and first piston（5）Connection, the other end and second piston of spring（7）Connection.
A kind of 3. piston type protector according to claim 1, it is characterised in that：The flexible member（11）For gas,
Gas is full of adapter cavity（8）.
A kind of 4. piston type protector according to claim 1, it is characterised in that：The flexible member（11）For spring and
Gas.
A kind of 5. piston type protector according to claim 1, it is characterised in that：The second piston（7）With housing（1）
Between be provided with outer ring seal grease chamber（12）, second piston（7）With piston rod（4）Between be provided with inner ring seal grease chamber（13）.
A kind of 6. piston type protector according to claim 5, it is characterised in that：The second piston（7）With housing（1）
Between be provided with and external agency chamber（6）The outer ring anti-pollution ring of contact（14）, outer ring anti-pollution ring（14）It is sleeved on second piston（7）
On, second piston（7）With piston rod（4）Between be provided with and external agency chamber（6）The inner ring anti-pollution ring of contact（15）, inner ring resists
Dirty ring（15）It is sleeved on piston rod（4）On.
A kind of 7. piston type protector according to claim 6, it is characterised in that：The piston rod（4）Inside set
There is flowing lumen（16）, flowing lumen（16）Respectively with external agency chamber（6）With interior media chamber（2）Connection.
A kind of 8. piston type protector according to claim 1, it is characterised in that：The housing（1）With bearing（3）Pass through
Threaded connection or flanged joint.
A kind of 9. piston type protector according to claim 8, it is characterised in that：The bearing（3）On be cased with O rings
（17）, bearing（3）With housing（1）It is fixedly connected by flange.
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 CN105515284A (en) | 2016-04-20 |
| CN105515284B true CN105515284B (en) | 2018-05-04 |
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ID=55723030
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610014480.6A Active CN105515284B (en) | 2016-01-11 | 2016-01-11 | A kind of piston type protector |
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| CN201013355Y (en) * | 2007-03-27 | 2008-01-30 | 陈耕 | High temperature high-pressure hydraulic type automatic balancing arrangement |
| CN101639106B (en) * | 2009-08-25 | 2011-05-11 | 深圳市中车业成实业有限公司 | Piston-type hydro-pneumatic buffer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3681629A (en) * | 1970-04-28 | 1972-08-01 | Jeumont Schneider | Electrical rectilinear-motion devices |
| 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 |
| 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 |
| 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 |
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