CN105515256A - Spindle sealing system for motor working under high-temperature or high-pressure environment - Google Patents
Spindle sealing system for motor working under high-temperature or high-pressure environment Download PDFInfo
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- CN105515256A CN105515256A CN201610014476.XA CN201610014476A CN105515256A CN 105515256 A CN105515256 A CN 105515256A CN 201610014476 A CN201610014476 A CN 201610014476A CN 105515256 A CN105515256 A CN 105515256A
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- joint
- main shaft
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- piston
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Hydraulic Motors (AREA)
Abstract
The invention discloses a spindle sealing system for a motor working under a high-temperature or high-pressure environment, which belongs to the technical field of motor equipment. The spindle sealing system comprises a first connector and a second connector; the first connector is connected with a motor housing; the second connector is connected with a spindle, and the first connector and the second connector are connected through screw threads. The spindle sealing system is characterized in that a piston rod sleeves the spindle; the piston rod is connected with a piston; one end of the first connector is connected with a piston end cover; the other end of the first connector is connected with a first sealing element; the second connector is connected with the spindle through a second sealing element; a transitional cavity is defined by the first connector, the second connector and the spindle; an internal cavity is defined by the motor housing, the spindle and the piston end cover; the first connector is provided with a first pressure balance hole, and the piston end cover is provided with a second pressure balance hole. Because the pressure difference between sealing is balanced by the piston, the sealing can work under a zero-pressure-difference environment, consequently, the sealing reliability is improved, and the stable operation of the motor under the high-temperature or high-pressure environment can be ensured.
Description
Technical field
The present invention relates to motor device technical field, particularly relate to a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment.
Background technology
High temperature or hyperbaric environment refer to simple high temperature or hyperbaric environment, or have the environment of high temperature and high pressure simultaneously, as the operational environment of the motor such as downhole electrical motor, deep-sea motor.The motor worked under high temperature or hyperbaric environment not only will bear the effect of external high temperature and high pressure, and the impact of external agency on motor can not be ignored equally.Under usual conditions, the medium of such outside motor is multi-phase mixed liquid, comprises solid phase, liquid and gas.And motor internal medium is generally thin oil medium, therefore, how preventing rotating parts and stationary parts place external agency from entering motor internal and preventing interior media from leaking into outside motor is that under this environment, work drive motor needs the technical problem primarily solved.
At present, under high temperature, hyperbaric environment, the sealing of work drive motor is owing to cannot realize the balance of transitional cavity internal pressure between sealing, and the mode of single sealing unit can only be adopted to realize, and single sealing makes the maintenance period of motor greatly shorten.Under the effect of high temperature, high pressure and outside multi-phase mixed liquid, sealing damages very soon, causes motor internal thin oil to leak, while outside multi-phase fluid enter motor internal motor cannot normally be worked.
Publication number is CN2817188, publication date is that the Chinese patent literature of on 09 13rd, 2006 discloses a kind of integrated oil-submersible motor with sealing device, comprise by motor-shaft extending, motor head, stator, rotor, thrust bearing, alignment bearing, socket, cable, the motor body that lead-in wire lid and bearing pedestal are formed, it is characterized in that: said motor-shaft extending end is equipped with seal head, the inlet opening of promising oil-immersed pump feed flow on seal head, motor-shaft extending is directly docked with oil-immersed pump by the connection screw on seal head, seal head forms the annular seal space of protection motor by least one pair of mechanical seal, form inner chamber and the outside space be interconnected between the bearing pedestal bottom of motor tail end and base, be wherein equipped with the cryptomere adjusting device regulating external and internal pressure, at least should have one in this device in order to regulate the adjustment cavity of external and internal pressure size.
The integrated oil-submersible motor of this patent documentation disclosed band sealing device, at the upper end fitting tight head of motor, directly docked with oil-immersed pump by seal head, on seal head, make-up machinery sealing is with the seal request meeting submersible electric machine with oil, this single mechanical seal is under the effect of high temperature, high pressure and outside multi-phase mixed liquid, sealing very easily damages, motor internal thin oil is caused to leak, simultaneously outside multi-phase fluid enters motor internal and makes motor impaired, causes motor can not the work of normal table.
Summary of the invention
The present invention is in order to overcome the defect of above-mentioned prior art, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment is provided, the present invention is by the pressure differential between piston balanced seal, work under making to be sealed in zero pressure difference environment, improve sealing reliability, prevent the leakage of motor internal thin oil and outside multi-phase fluid from entering motor internal, and then ensure motor steady operation under high temperature, hyperbaric environment.
The present invention is achieved through the following technical solutions:
A kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint be connected with motor housing and the second joint be connected with main shaft, first joint and the second joint are threaded connection, it is characterized in that: on described main shaft, cover has piston rod, piston rod is connected with piston, first joint one end is connected with piston end cap, the other end is connected with the first seal, described second joint is connected with main shaft by the second seal, first joint, second joint and main shaft surround adapter cavity, motor housing, main shaft and piston end cap surround inner chamber, described first joint has the first pressure compensation opening, piston end covers and has the second pressure compensation opening.
Described first seal is end surface mechanical sealing, comprises stationary ring, spring, rotating ring and snap ring, and stationary ring is fixed on the first joint, and snap ring is connected on main shaft, and stationary ring is connected by spring with rotating ring; Second seal is radial seal, comprises journal bearing and radial direction seal ring, and journal bearing is enclosed within main shaft, and the second joint is connected by radial direction seal ring with main shaft.
Described first seal is radial seal, comprises journal bearing and radial direction seal ring, and journal bearing is enclosed within main shaft, and the first joint is connected by radial direction seal ring with main shaft; Second seal is end surface mechanical sealing, comprises stationary ring, spring, rotating ring and snap ring, and stationary ring is fixed on the second joint, and snap ring is connected on main shaft, and stationary ring is connected by spring with rotating ring.
Described first seal and the second seal are radial seal, and the first seal comprises journal bearing and radial direction seal ring, and journal bearing is enclosed within main shaft, and the first joint is connected by radial direction seal ring with main shaft; Second seal comprises journal bearing and radial direction seal ring, and journal bearing is enclosed within main shaft, and the second joint is connected by radial direction seal ring with main shaft.
Described first seal and the second seal are end surface mechanical sealing, and the first seal comprises stationary ring, spring, rotating ring and snap ring, and stationary ring is fixed on the first joint, and snap ring is connected on main shaft, and stationary ring is connected by spring with rotating ring; Second seal comprises stationary ring, spring, rotating ring and snap ring, and stationary ring is fixed on the second joint, and snap ring is connected on main shaft, and stationary ring is connected by spring with rotating ring.
On described main shaft, cover has journal bearing, and journal bearing is between the second joint and main shaft.
Described first pressure compensation opening and the second pressure compensation opening correspondence are arranged.
Described first pressure compensation opening and the second pressure compensation opening are staggeredly arranged.
On described piston, cover has outer side seal circle, and upper cover of piston rod has inner seal circle, and outer side seal circle is between the first joint and piston, and inner seal circle is between piston and piston rod.
Operation principle of the present invention is as follows:
Motor initial operating stage is outer side seal active phase: be thin oil in inner chamber and adapter cavity, and the thin oil pressure in inner chamber is very little with external agency pressure balance differential pressure under the effect of protector, by the complete seal isolation of piston between inner chamber and adapter cavity.Radial seal both can prevent external agency from entering adapter cavity, also can prevent the thin oil in adapter cavity from leaking into exocoel simultaneously.In this stage, end surface mechanical sealing runs completely in good thin oil environment, end surface mechanical sealing does not have impaired risk completely, the pressure of the thin oil in adapter cavity can change along with the change of outside motor pressure and temperature, by the movement of piston, the pressure of adapter cavity and inner chamber can be made to keep balancing, thus make adapter cavity pressure and ambient pressure realize balancing, and then sealing pressure at both sides difference can be prevented excessive and make seal failure.
It is inner seal active phase that motor runs the later stage: along with the continuous operation of motor, radial seal will be worn and lose efficacy, adapter cavity is communicated with the medium in exocoel, medium now in exocoel will enter in adapter cavity, medium simultaneously in adapter cavity also can externally leak, radial seal was lost efficacy the initial stage, by based on the mixture of thin oil and water in adapter cavity, now end surface mechanical sealing and piston will play the effect of isolation inner chamber and adapter cavity, the medium of exocoel and adapter cavity still cannot enter inner chamber, and then can the stable operation of effective guarantee motor safety.
Beneficial effect main manifestations of the present invention is in the following areas:
One, the present invention, on main shaft, cover has piston rod, piston rod is connected with piston, first joint one end is connected with piston end cap, the other end is connected with the first seal, second joint is connected with main shaft by the second seal, first joint, second joint and main shaft surround adapter cavity, motor housing, main shaft and piston end cap surround inner chamber, first joint has the first pressure compensation opening, piston end covers and has the second pressure compensation opening, by the mode adopting the first seal and the second seal to combine, compared with the single sealing of prior art, effectively can extend the maintenance period of motor, by the pressure differential between piston balanced seal, work under making to be sealed in zero pressure difference environment, improve sealing reliability, effectively prevent the leakage of motor internal thin oil and outside multi-phase fluid from entering motor internal, and then motor steady operation under high temperature, hyperbaric environment can be ensured.
Two, the present invention, the first seal is end surface mechanical sealing, comprises stationary ring, spring, rotating ring and snap ring, and stationary ring is fixed on the first joint, and snap ring is connected on main shaft, and stationary ring is connected by spring with rotating ring, second seal is radial seal, comprise journal bearing and radial direction seal ring, journal bearing is enclosed within main shaft, second joint is connected by radial direction seal ring with main shaft, outer side seal realizes sealing by the rubbing surface between radial seal and main shaft, inner seal passes through end surface mechanical sealing, the rubbing surface between its stationary ring and rotating ring is utilized to realize sealing, along with the continuous operation of motor, even if the radial seal in outside was lost efficacy, the end surface mechanical sealing of inner side and piston coordinate the effect just can playing isolation inner chamber and adapter cavity, the medium of exocoel and adapter cavity still cannot enter inner chamber, thus can ensure that motor normally runs.
Three, the present invention, the first seal is radial seal, comprises journal bearing and radial direction seal ring, and journal bearing is enclosed within main shaft, and the first joint is connected by radial direction seal ring with main shaft, second seal is end surface mechanical sealing, comprise stationary ring, spring, rotating ring and snap ring, stationary ring is fixed on the second joint, snap ring is connected on main shaft, stationary ring is connected by spring with rotating ring, outer side seal passes through end surface mechanical sealing, the rubbing surface between its stationary ring and rotating ring is utilized to realize sealing, inner seal realizes sealing by the rubbing surface between radial seal and main shaft, along with the long-play of motor, even if the end surface mechanical sealing in outside lost efficacy, the radial seal of inner side and piston coordinate also can isolate inner chamber and adapter cavity, prevent the medium of exocoel and adapter cavity from entering inner chamber, guarantee motor stabilizing runs.
Four, the present invention, the first seal and the second seal are radial seal, and the first seal comprises journal bearing and radial direction seal ring, and journal bearing is enclosed within main shaft, and the first joint is connected by radial direction seal ring with main shaft; Second seal comprises journal bearing and radial direction seal ring, journal bearing is enclosed within main shaft, second joint is connected by radial direction seal ring with main shaft, outer side seal and inner seal all realize sealing by the rubbing surface between radial seal and main shaft, realize dual-seal, the movement of fitting piston, can pressure reduction between balance external side seal and inner seal, and then make motor stable.
Five, the present invention, the first seal and the second seal are end surface mechanical sealing, and the first seal comprises stationary ring, spring, rotating ring and snap ring, and stationary ring is fixed on the first joint, and snap ring is connected on main shaft, and stationary ring is connected by spring with rotating ring; Second seal comprises stationary ring, spring, rotating ring and snap ring, stationary ring is fixed on the second joint, snap ring is connected on main shaft, stationary ring is connected by spring with rotating ring, outer side seal and inner seal all pass through end surface mechanical sealing, utilize the rubbing surface between its stationary ring and rotating ring to realize sealing, by the pressure reduction between piston shifting balance outer side seal and inner seal, the operation of motor stabilizing can be made.
Six, the present invention, on main shaft, cover has journal bearing, and journal bearing, between the second joint and main shaft, can improve outer side seal effect further, effectively prevents the medium in exocoel from entering adapter cavity.
Seven, the present invention; first pressure compensation opening and the second pressure compensation opening correspondence are arranged; by this arrangement; first pressure compensation opening and the second pressure compensation opening place are in the same horizontal line; piston can be made to move fast; make the pressure between inner chamber and adapter cavity reach balance, be convenient to protection sealing, ensure sealing effectiveness.
Eight, the present invention, first pressure compensation opening and the second pressure compensation opening are staggeredly arranged, by this arrangement, make to there is difference in height between the first pressure compensation opening and the second pressure compensation opening, the movement of piston can be finely tuned, pressure between inner chamber and adapter cavity is tended to balance for a long time, thus ensures the result of use of sealing.
Nine, the present invention, on piston, cover has outer side seal circle, upper cover of piston rod has inner seal circle, and outer side seal circle is between the first joint and piston, and inner seal circle is between piston and piston rod, by arranging inner seal circle and outer side seal circle, there is good sealing effectiveness, can prevent piston from producing gap with the first joint and piston rod respectively, ensure piston stability in use, piston is moved more smooth and easy, be convenient to regulate the pressure balance between inner chamber and adapter cavity.
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 7;
Fig. 7 is the structural representation of the embodiment of the present invention 8;
Fig. 8 is the structural representation of the embodiment of the present invention 9;
Mark in figure: 1, motor housing, the 2, first joint, 3, main shaft, the 4, second joint, 5, piston rod, 6, piston, 7, piston end cap, 8, adapter cavity, 9, inner chamber, the 10, first pressure compensation opening, 11, the second pressure compensation opening, 12, stationary ring, 13, spring, 14, rotating ring, 15, snap ring, 16, journal bearing, 17, radial direction seal ring, 18, outer side seal circle, 19, inner seal circle.
Embodiment
Embodiment 1
See Fig. 1, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
The present embodiment is the most basic execution mode, on main shaft, cover has piston rod, piston rod is connected with piston, first joint one end is connected with piston end cap, the other end is connected with the first seal, second joint is connected with main shaft by the second seal, first joint, second joint and main shaft surround adapter cavity, motor housing, main shaft and piston end cap surround inner chamber, first joint has the first pressure compensation opening, piston end covers and has the second pressure compensation opening, by the mode adopting the first seal and the second seal to combine, compared with the single sealing of prior art, effectively can extend the maintenance period of motor, by the pressure differential between piston balanced seal, work under making to be sealed in zero pressure difference environment, improve sealing reliability, effectively prevent the leakage of motor internal thin oil and outside multi-phase fluid from entering motor internal, and then motor steady operation under high temperature, hyperbaric environment can be ensured.
Embodiment 2
See Fig. 2, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
Described first seal is end surface mechanical sealing, comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, and stationary ring 12 is fixed on the first joint 2, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14; Second seal is radial seal, comprises journal bearing 16 and radial direction seal ring 17, and journal bearing 16 is enclosed within main shaft 3, and the second joint 4 is connected by radial direction seal ring 17 with main shaft 3.
The present embodiment is a better embodiment, and the first seal is end surface mechanical sealing, comprises stationary ring, spring, rotating ring and snap ring, and stationary ring is fixed on the first joint, and snap ring is connected on main shaft, and stationary ring is connected by spring with rotating ring, second seal is radial seal, comprise journal bearing and radial direction seal ring, journal bearing is enclosed within main shaft, second joint is connected by radial direction seal ring with main shaft, outer side seal realizes sealing by the rubbing surface between radial seal and main shaft, inner seal passes through end surface mechanical sealing, the rubbing surface between its stationary ring and rotating ring is utilized to realize sealing, along with the continuous operation of motor, even if the radial seal in outside was lost efficacy, the end surface mechanical sealing of inner side and piston coordinate the effect just can playing isolation inner chamber and adapter cavity, the medium of exocoel and adapter cavity still cannot enter inner chamber, thus can ensure that motor normally runs.
Embodiment 3
See Fig. 3, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
Described first seal is radial seal, comprises journal bearing 16 and radial direction seal ring 17, and journal bearing 16 is enclosed within main shaft 3, and the first joint 2 is connected by radial direction seal ring 17 with main shaft 3; Second seal is end surface mechanical sealing, comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, and stationary ring 12 is fixed on the second joint 4, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14.
The present embodiment is another better embodiment, and the first seal is radial seal, comprises journal bearing and radial direction seal ring, and journal bearing is enclosed within main shaft, and the first joint is connected by radial direction seal ring with main shaft, second seal is end surface mechanical sealing, comprise stationary ring, spring, rotating ring and snap ring, stationary ring is fixed on the second joint, snap ring is connected on main shaft, stationary ring is connected by spring with rotating ring, outer side seal passes through end surface mechanical sealing, the rubbing surface between its stationary ring and rotating ring is utilized to realize sealing, inner seal realizes sealing by the rubbing surface between radial seal and main shaft, along with the long-play of motor, even if the end surface mechanical sealing in outside lost efficacy, the radial seal of inner side and piston coordinate also can isolate inner chamber and adapter cavity, prevent the medium of exocoel and adapter cavity from entering inner chamber, guarantee motor stabilizing runs.
Embodiment 4
See Fig. 4, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
Described first seal and the second seal are radial seal, and the first seal comprises journal bearing 16 and radial direction seal ring 17, and journal bearing 16 is enclosed within main shaft 3, and the first joint 2 is connected by radial direction seal ring 17 with main shaft 3; Second seal comprises journal bearing 16 and radial direction seal ring 17, and journal bearing 16 is enclosed within main shaft 3, and the second joint 4 is connected by radial direction seal ring 17 with main shaft 3.
The present embodiment is another better embodiment, and the first seal and the second seal are radial seal, and the first seal comprises journal bearing and radial direction seal ring, and journal bearing is enclosed within main shaft, and the first joint is connected by radial direction seal ring with main shaft; Second seal comprises journal bearing and radial direction seal ring, journal bearing is enclosed within main shaft, second joint is connected by radial direction seal ring with main shaft, outer side seal and inner seal all realize sealing by the rubbing surface between radial seal and main shaft, realize dual-seal, the movement of fitting piston, can pressure reduction between balance external side seal and inner seal, and then make motor stable.
Embodiment 5
See Fig. 5, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
Described first seal and the second seal are end surface mechanical sealing, first seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, stationary ring 12 is fixed on the first joint 2, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14; Second seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, and stationary ring 12 is fixed on the second joint 4, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14.
The present embodiment is another better embodiment, first seal and the second seal are end surface mechanical sealing, and the first seal comprises stationary ring, spring, rotating ring and snap ring, and stationary ring is fixed on the first joint, snap ring is connected on main shaft, and stationary ring is connected by spring with rotating ring; Second seal comprises stationary ring, spring, rotating ring and snap ring, stationary ring is fixed on the second joint, snap ring is connected on main shaft, stationary ring is connected by spring with rotating ring, outer side seal and inner seal all pass through end surface mechanical sealing, utilize the rubbing surface between its stationary ring and rotating ring to realize sealing, by the pressure reduction between piston shifting balance outer side seal and inner seal, the operation of motor stabilizing can be made.
Embodiment 6
See Fig. 6, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
Described first seal and the second seal are end surface mechanical sealing, first seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, stationary ring 12 is fixed on the first joint 2, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14; Second seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, and stationary ring 12 is fixed on the second joint 4, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14.
On described main shaft 3, cover has journal bearing 16, and journal bearing 16 is between the second joint 4 and main shaft 3.
The present embodiment is another better embodiment, and on main shaft, cover has journal bearing, and journal bearing, between the second joint and main shaft, can improve outer side seal effect further, effectively prevents the medium in exocoel from entering adapter cavity.
Embodiment 7
See Fig. 6, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
Described first seal and the second seal are end surface mechanical sealing, first seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, stationary ring 12 is fixed on the first joint 2, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14; Second seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, and stationary ring 12 is fixed on the second joint 4, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14.
On described main shaft 3, cover has journal bearing 16, and journal bearing 16 is between the second joint 4 and main shaft 3.
Described first pressure compensation opening 10 and the second pressure compensation opening 11 correspondence are arranged.
The present embodiment is another better embodiment; first pressure compensation opening and the second pressure compensation opening correspondence are arranged; by this arrangement; first pressure compensation opening and the second pressure compensation opening place are in the same horizontal line; piston can be made to move fast; make the pressure between inner chamber and adapter cavity reach balance, be convenient to protection sealing, ensure sealing effectiveness.
Embodiment 8
See Fig. 7, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
Described first seal and the second seal are end surface mechanical sealing, first seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, stationary ring 12 is fixed on the first joint 2, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14; Second seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, and stationary ring 12 is fixed on the second joint 4, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14.
On described main shaft 3, cover has journal bearing 16, and journal bearing 16 is between the second joint 4 and main shaft 3.
Described first pressure compensation opening 10 and the second pressure compensation opening 11 are staggeredly arranged.
The present embodiment is another better embodiment, first pressure compensation opening and the second pressure compensation opening are staggeredly arranged, by this arrangement, make to there is difference in height between the first pressure compensation opening and the second pressure compensation opening, the movement of piston can be finely tuned, pressure between inner chamber and adapter cavity is tended to balance for a long time, thus ensures the result of use of sealing.
Embodiment 9
See Fig. 8, a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint 2 be connected with motor housing 1 and the second joint 4 be connected with main shaft 3, first joint 2 and the second joint 4 are threaded connection, on described main shaft 3, cover has piston rod 5, piston rod 5 is connected with piston 6, first joint 2 one end is connected with piston end cap 7, the other end is connected with the first seal, described second joint 4 is connected with main shaft 3 by the second seal, first joint 2, second joint 4 and main shaft 3 surround adapter cavity 8, motor housing 1, main shaft 3 and piston end cap 7 surround inner chamber 9, described first joint 2 has the first pressure compensation opening 10, piston end cap 7 has the second pressure compensation opening 11.
Described first seal and the second seal are end surface mechanical sealing, first seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, stationary ring 12 is fixed on the first joint 2, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14; Second seal comprises stationary ring 12, spring 13, rotating ring 14 and snap ring 15, and stationary ring 12 is fixed on the second joint 4, and snap ring 15 is connected on main shaft 3, and stationary ring 12 is connected by spring 13 with rotating ring 14.
On described main shaft 3, cover has journal bearing 16, and journal bearing 16 is between the second joint 4 and main shaft 3.
Described first pressure compensation opening 10 and the second pressure compensation opening 11 are staggeredly arranged.
On described piston 6, cover has outer side seal circle 18, and on piston rod 5, cover has inner seal circle 19, and outer side seal circle 18 is between the first joint 2 and piston 6, and inner seal circle 19 is between piston 6 and piston rod 5.
The present embodiment is preferred forms, on main shaft, cover has piston rod, piston rod is connected with piston, first joint one end is connected with piston end cap, the other end is connected with the first seal, second joint is connected with main shaft by the second seal, first joint, second joint and main shaft surround adapter cavity, motor housing, main shaft and piston end cap surround inner chamber, first joint has the first pressure compensation opening, piston end covers and has the second pressure compensation opening, by the mode adopting the first seal and the second seal to combine, compared with the single sealing of prior art, effectively can extend the maintenance period of motor, by the pressure differential between piston balanced seal, work under making to be sealed in zero pressure difference environment, improve sealing reliability, effectively prevent the leakage of motor internal thin oil and outside multi-phase fluid from entering motor internal, and then motor steady operation under high temperature, hyperbaric environment can be ensured.On piston, cover has outer side seal circle, upper cover of piston rod has inner seal circle, outer side seal circle is between the first joint and piston, inner seal circle, between piston and piston rod, by arranging inner seal circle and outer side seal circle, has good sealing effectiveness, can prevent piston from producing gap with the first joint and piston rod respectively, ensure piston stability in use, piston is moved more smooth and easy, be convenient to regulate the pressure balance between inner chamber and adapter cavity.
Claims (9)
1. the spindle seal system for work drive motor under high temperature or hyperbaric environment, comprise the first joint (2) be connected with motor housing (1) and the second joint (4) be connected with main shaft (3), first joint (2) and the second joint (4) are threaded connection, it is characterized in that: the upper cover of described main shaft (3) has piston rod (5), piston rod (5) is connected with piston (6), first joint (2) one end is connected with piston end cap (7), the other end is connected with the first seal, described second joint (4) is connected with main shaft (3) by the second seal, first joint (2), second joint (4) and main shaft (3) surround adapter cavity (8), motor housing (1), main shaft (3) and piston end cap (7) surround inner chamber (9), described first joint (2) has the first pressure compensation opening (10), piston end cap (7) has the second pressure compensation opening (11).
2. a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment according to claim 1, it is characterized in that: described first seal is end surface mechanical sealing, comprise stationary ring (12), spring (13), rotating ring (14) and snap ring (15), stationary ring (12) is fixed on the first joint (2), snap ring (15) is connected on main shaft (3), and stationary ring (12) is connected by spring (13) with rotating ring (14); Second seal is radial seal, comprises journal bearing (16) and radial direction seal ring (17), and journal bearing (16) is enclosed within main shaft (3), and the second joint (4) is connected by radial direction seal ring (17) with main shaft (3).
3. a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment according to claim 1, it is characterized in that: described first seal is radial seal, comprise journal bearing (16) and radial direction seal ring (17), journal bearing (16) is enclosed within main shaft (3), and the first joint (2) is connected by radial direction seal ring (17) with main shaft (3); Second seal is end surface mechanical sealing, comprise stationary ring (12), spring (13), rotating ring (14) and snap ring (15), stationary ring (12) is fixed on the second joint (4), and snap ring (15) is connected on main shaft (3), and stationary ring (12) is connected by spring (13) with rotating ring (14).
4. a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment according to claim 1, it is characterized in that: described first seal and the second seal are radial seal, first seal comprises journal bearing (16) and radial direction seal ring (17), journal bearing (16) is enclosed within main shaft (3), and the first joint (2) is connected by radial direction seal ring (17) with main shaft (3); Second seal comprises journal bearing (16) and radial direction seal ring (17), and journal bearing (16) is enclosed within main shaft (3), and the second joint (4) is connected by radial direction seal ring (17) with main shaft (3).
5. a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment according to claim 1, it is characterized in that: described first seal and the second seal are end surface mechanical sealing, first seal comprises stationary ring (12), spring (13), rotating ring (14) and snap ring (15), stationary ring (12) is fixed on the first joint (2), snap ring (15) is connected on main shaft (3), and stationary ring (12) is connected by spring (13) with rotating ring (14); Second seal comprises stationary ring (12), spring (13), rotating ring (14) and snap ring (15), stationary ring (12) is fixed on the second joint (4), snap ring (15) is connected on main shaft (3), and stationary ring (12) is connected by spring (13) with rotating ring (14).
6. a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment according to claim 5, it is characterized in that: the upper cover of described main shaft (3) has journal bearing (16), and journal bearing (16) is positioned between the second joint (4) and main shaft (3).
7. a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment according to claim 6, is characterized in that: described first pressure compensation opening (10) and the second pressure compensation opening (11) correspondence are arranged.
8. a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment according to claim 6, is characterized in that: described first pressure compensation opening (10) and the second pressure compensation opening (11) are staggeredly arranged.
9. a kind of spindle seal system for work drive motor under high temperature or hyperbaric environment according to claim 1, it is characterized in that: the upper cover of described piston (6) has outer side seal circle (18), the upper cover of piston rod (5) has inner seal circle (19), outer side seal circle (18) is positioned between the first joint (2) and piston (6), and inner seal circle (19) is positioned between piston (6) and piston rod (5).
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| CN201610014476.XA CN105515256B (en) | 2016-01-11 | 2016-01-11 | A kind of spindle seal system for work drive motor under high temperature or hyperbaric environment |
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| CN105515256B CN105515256B (en) | 2018-10-09 |
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Cited By (3)
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| CN106655589A (en) * | 2016-11-29 | 2017-05-10 | 邢天宜 | Gland seal system for resisting deep-sea high pressure and equipped with motor rotating shaft equipment |
| CN113894056A (en) * | 2020-07-07 | 2022-01-07 | 细美事有限公司 | Semiconductor element pressurizing device and test handler having the same |
| CN118232611A (en) * | 2024-03-22 | 2024-06-21 | 东莞市兴亚机电设备有限公司 | High-temperature-resistant high-pressure-resistant vacuum sealing motor |
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| CN118232611B (en) * | 2024-03-22 | 2024-09-13 | 东莞市兴亚机电设备有限公司 | High-temperature-resistant high-pressure-resistant vacuum sealing motor |
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