CN2654920Y - Seawater environment pressure compensator for underwater hydraulic system - Google Patents
Seawater environment pressure compensator for underwater hydraulic system Download PDFInfo
- Publication number
- CN2654920Y CN2654920Y CN 200320108019 CN200320108019U CN2654920Y CN 2654920 Y CN2654920 Y CN 2654920Y CN 200320108019 CN200320108019 CN 200320108019 CN 200320108019 U CN200320108019 U CN 200320108019U CN 2654920 Y CN2654920 Y CN 2654920Y
- Authority
- CN
- China
- Prior art keywords
- spring
- pressure
- hydraulic system
- unit
- sea water
- 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.)
- Expired - Lifetime
Links
- 239000013535 sea water Substances 0.000 title abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 230000009467 reduction Effects 0.000 claims description 16
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 18
- 239000003921 oil Substances 0.000 description 13
- 238000007789 sealing Methods 0.000 description 12
- 230000001447 compensatory effect Effects 0.000 description 11
- 239000010720 hydraulic oil Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 235000003642 hunger Nutrition 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000037351 starvation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model discloses a sea water environment pressure compensator for underwater hydraulic system. The utility model has the advantages of sensing pressure around sea water and transmitting sea water environment pressure to the hydraulic system, compensating the pressure of the hydraulic system and eliminating or decreasing the influence of sea water environment pressure upon the hydraulic system. The utility model comprises a machinery sea water pressure sensing unit, an auto exhaust unit and an auto oil-filling unit; the rolling membrane is used for sensing seal water environment pressure, the compensating pressure is slightly higher than sea water environment pressure because of pre-pressuring function for the permanent force spring, avoiding invading into the hydraulic system for sea water; the special triple seal design guarantees the compensator can work reliably for a long time; the auto exhaust unit is used for guaranteeing the air auto exhaust inside the device; the auto oil-filling unit is used for completing oil filling function for the pressure sensing unit. The pressure compensator overcomes the failure for prior pressure compensator. The utility model can be mainly used for hydraulic system for underwater equipment at any depth to compensate the influence of sea water environment pressure upon the hydraulic system.
Description
Affiliated technical field
The utility model relates to a kind of fluid pressure actuator, especially relates to a kind of ambient water pressure compensator of underwater hydraulic system.
Background technique
The ocean underwater installation comprises underwater robot, underwater construction equipment and military submarine three major types.For the hydraulic control system of these underwater installations, work in, deep-etching big, the big such environment of temperature variation in the variation in pressure of seawater, need to solve some relevant key issues, to guarantee the control performance of hydraulic system.How to solve the variation along with seawater pressure, the pressure compensation of hydraulic system or pressure balance problem just become one of key issue that the underwater installation hydraulic system will solve naturally.
The pressure of underwater installation hydraulic system is not taked the pressure compensation measure in early days, but all be installed in hydraulic control component and final controlling element under water in the pressurized container respectively, to prevent the influence of seawater pressure to system, but this method has increased some unnecessary weight greatly, in addition, the I﹠M of element is also very difficult.Moreover, also having in early days and use bag type accumulator to substitute pressure compensator to finish pressure compensation, this also is in order to solve the temporary measure of ambient water pressure compensation.
At present, the existing pressure compensator that is exclusively used in the underwater installation hydraulic system, this kind compensator is common on underwater robot and the underwater construction equipment.Generally, mainly form by several parts such as compensator shell, compensation barrier film, counterbalance spring, scales.Its basic principle is by the distortion of the mechanical device of diaphragm, thin walled shell or piston form or moves, and removes responsive ambient water pressure on every side, and ambient water pressure is delivered to hydraulic system or the parts that need compensation.
But still there are many problems in this traditional pressure compensator:
(1) for hydraulic system with asymmetric final controlling element, because the volume difference of two work of final controlling element cavity volume, pressure compensator in the course of the work, different swept volumes is carried out corresponding cubage compensation, this certainly will cause the amount of deformation of its inner counterbalance spring to change greatly, finally makes final controlling element work cavity volume difference and the compensatory pressure difference; In addition, when pressure compensator initialization and the repairing of oil starvation need, the counterbalance spring amount of deformation in the compensator changes greatly, and compensatory pressure is changed greatly.Promptly the difference of Bu Chang pressure and ambient water pressure can not keep constant, and compensation precision is not high;
(2) for the underwater equipment of short-term job, when pressure compensator when leaking oil starvation, can float to the water surface and carry out repairing.And reach the underwater installation of some months time for moving under water under water, can't carry out repairing in the course of the work at all.So this compensator can not satisfy automatic repairing requirement;
(3) existing pressure compensator does not have automatic exhaust device, must be oil-filled in advance before work by manually carrying out, and emptying air wherein.Like this, all want hand inspection and exhaust before the each entry of equipment, cause unnecessary trouble;
Consider from reliability of products that (4) because the deterioration phenomenon of rubber product is inevitably, in case occur leaking, seawater is invaded hydraulic system, make the system can't proper functioning.Its reliability has much room for improvement.
Summary of the invention
In order to reduce or eliminate the influence of ambient water pressure, improve the control performance of hydraulic system, the purpose of this utility model provides a kind of ambient water pressure compensator of underwater hydraulic system.
For the hydraulic system that control accuracy is had relatively high expectations, eliminate or reduce the fluctuation of compensatory pressure and ambient water pressure difference; On the other hand, for the equipment that is in for a long time in the briny environment, because the leakage that hydraulic system is difficult to avoid, the seawater pressure compensation device must possess automatic repairing function.Carrying out the pressure compensated while,, guaranteeing the safe and reliable during operation operation of underwater installation, need carry out Design in Reliability in order to improve the reliability of pressure compensator.
In order to achieve the above object, the technical solution adopted in the utility model is that it comprises: mechanical type ambient water pressure sensing unit, automatic vent unit and automatic repairing unit, wherein:
1) mechanical type ambient water pressure sensing unit: comprise housing, rolling diaphragm, fixed plate, hitch frame, pressing plate, constant force spring, roller bearing, piston, seal ring, pressing plate, controlling rod; In lower shell body, the outer ring of rolling diaphragm is fixed on the lower shell body, with fixed plate, hitch frame to folder, rolling diaphragm links to each other with hitch frame, rolling diaphragm is in quick condition in lower shell body, hitch frame is connected with the drawing-off end of clamp device and constant force spring, constant force spring be contained in middle shell about on two roller bearings, two roller bearings and middle shell form and are rotatably assorted, and are contained in piston rod on the piston in the upper shell and controlling rod for being slidingly connected;
2) automatic vent unit: comprise by small plunger, first spring, outlet valve spool, second outlet valve that spring is formed; The left end of small plunger withstands on the cam curved surface of controlling rod right flank, the right-hand member of small plunger is pressed on first spring, first spring is pressed in the left end of outlet valve spool, withstands on second spring at the right-hand member of outlet valve spool, and the outlet of outlet valve is by first segment discharge orifice exit;
3) automatic repairing unit: comprise the Fill valve of forming by Fill valve spool, Returnning spring, the repairing reduction valve of forming by pressing spring, repairing reduction valve spool; The Fill valve spool is pressed in to the right by Returnning spring on the cam curved surface of controlling rod left surface, links to each other by second throttle orifice between Fill valve and the repairing reduction valve.
Said clamp device is that the drawing-off end with nut, spring washer, screw, plain cushion, pressing plate and constant force spring is connected,
The utility model is compared with background technique, and the useful effect that has is:
By the responsive ambient water pressure of rolling diaphragm,, prevent seawater intrusion hydraulic system because the precharge effect of constant force spring makes compensatory pressure a little more than ambient water pressure.Owing to be constant force preload, can guarantee higher pressure compensation precision.Its special triple seal design guarantees that it works reliably and with long-term.Automatically discharge by the air in the automatic vent unit assurance device, finish repairing task, leak in order to compensation to pressure sensitive cells by automatic repairing unit.This device has overcome the defective of existing pressure compensator.The utility model is mainly used in the hydraulic system of the underwater installation of any degree of depth under the seawater, with the influence of compensation ambient water pressure to hydraulic system.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural principle schematic representation of the present utility model;
Fig. 2 is concrete structure enforcement figure of the present utility model;
Fig. 3 is the I enlarged view of Fig. 2;
Fig. 4 is the A-A sectional view of Fig. 2.
Among the figure: 1. lower shell body, 2. rolling diaphragm, 3. fixed plate, 4. hitch frame, 5. nut, 6. spring washer, 7. screw, 8. plain cushion, 9. pressing plate, 10. constant force spring, 11. roller bearing, 12. nuts, 13. spring washers, 14. plain cushions, 15. pistons, 16. seal ring, 17. pressing plates, 18. plain cushions, 19. nuts, 20. controlling rod, 21. small plungers, 22. springs, 23. outlet valve spools, 24 springs, 25. throttle orifice R3,26. throttle orifice R1,27. Fill valve spools, 28. Returnning spring, 29. throttle orifice R2,30. pressing spring, 31. repairing reduction valve spools, 32. bolt, 33. nuts, 34. spring washers, 35. plain cushions, 36. middle shell, 37. spring brackets, 38. axle sleeves, 39. circlips, 40. upper shell, 41. screws, 42. nuts, 43. spring pads, 44. plain cushion, 45. bolts, 46. seal rings, 47. circlips, 48. guide sleeve, 49. nuts, 50. seal rings, 51. links, 52. nut, 53. locking nuts, 54. seal rings, 55. plug screws, 56. plug screw, 57. valve bodies, 58 controlling rods, 59. plug screws.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 2, it comprises the utility model: mechanical type ambient water pressure sensing unit, automatic vent unit and automatic repairing unit, wherein:
1) mechanical type ambient water pressure sensing unit: comprise lower shell body 1, rolling diaphragm 2, fixed plate 3, hitch frame 4, nut 5, spring washer 6, screw 7, plain cushion 8, pressing plate 9, constant force spring 10, roller bearing 11, nut 12, spring washer 13, plain cushion 14, piston 15, seal ring 16, pressing plate 17, plain cushion 18, nut 19, controlling rod 20, throttle orifice 26, bolt 32, nut 33, spring washer 34, plain cushion 35, middle shell 36, spring bracket 37, axle sleeve 38, circlip 39, lower shell body 40, screw 41, nut 42, spring pad 43, plain cushion 44, bolt 45, seal ring 46, circlip 47, guide sleeve 48, nut 49, seal ring 50, link 51, nut 52, locking nut 53; In the small end of lower shell body 1, the outer ring of rolling diaphragm 2 is fixed on the flange of lower shell body 1 and middle shell 36, with fixed plate 3,4 pairs of folders of hitch frame, rolling diaphragm 2 links to each other with hitch frame 4, rolling diaphragm 2 is in quick condition at the inner chamber of lower shell body 1 and middle shell 36, the drawing-off end of hitch frame 4 usefulness clamp devices and constant force spring 10 is connected, constant force spring 10 be contained in the middle shell 36 about on two roller bearings 11, two roller bearings 11 form with spring bracket 37 and are rotatably assorted, and spring bracket 37 links to each other with middle shell 36 by screw 41.Piston rod 58 and controlling rod 20 are coupled together piston rod 58 and controlling rod 20 by nut 52, locking nut 53 for being slidingly connected, and finish spacing by the boss on the piston rod 58, nut 52 with the endoporus on the controlling rod 20.When piston rod 58 was moved upwards up at the bottom of the endoporus, upwards push lever 20 when controlling rod 20 moves up, was moved to the left by the control of the cam curved surface on it Fill valve spool, opens valve port, carries out repairing.At this moment, piston rod 58 moves downward, the boss contact nut 52 on piston rod 58.When continuing to move downward, drive controlling rod 20 and move downward together, controlling rod 20 moves to certain position, and the Fill valve spool moves right under the effect of spring 28, close port.Finish the repairing task.Between the amortization period, piston rod 58 is worked in limited range always in normal pressure.
The leading role of piston rod 20 is finished by guide sleeve 48.Guide sleeve 48 is installed in the endoporus of link 51, and axially locating is guaranteed by circlip 47.By nut 49 link 51 and upper shell 40 are coupled together.The end has Sealing 50 to seal.
Plug screw 59 is used for sealing after the sealing cavity volume is full of oil.
2) automatic vent unit: comprise by small plunger 21, first spring 22, outlet valve spool 23, second outlet valve that spring 24 is formed; The left end of small plunger 21 withstands on controlling rod 20 right flanks, small plunger 21 right-hand member be pressed on first spring 22, first spring 22 is pressed in the left end of outlet valve spool 23, withstands on second spring 24 at the right-hand member of outlet valve spool 23.Switching by controlling rod 20, spring 22 and spring 24 actings in conjunction control outlet valve valve port, when in the most original working position, the left end of small plunger 21 withstands on the lowest part of the cam curved surface of controlling rod 20, be in the position of high order end, this moment, outlet valve spool 23 was at two ends spring 22, also be in the high order end position under 24 the effect, the outlet valve valve port is opened.When the left end of small plunger 21 withstood on the highest point of cam curved surface of controlling rod 20, because two ends spring 22,24 has identical spring rate, the decrement of two springs 22,24 was identical, all is half of small plunger 21 strokes.The stroke of outlet valve spool is half of small plunger 21 strokes equally like this.When the valve port opening amount of design is worth less than this, can and close valve port.The outlet of outlet valve is by throttle orifice 25 exits;
3) automatic repairing unit: comprise the Fill valve of forming by Fill valve spool 27, Returnning spring 28, the repairing reduction valve of forming by pressing spring 30, repairing reduction valve spool 31; Fill valve spool 27 is pressed in to the right on controlling rod 20 right flanks by Returnning spring 28, links to each other by throttle orifice 29 between Fill valve and the repairing reduction valve.The switching of Fill valve is controlled jointly by controlling rod 20 and Returnning spring 28, by moving up and down of controlling rod 20, makes Fill valve spool 27 be operated in the different cam curved surface position of controlling rod 20.When the lowest part of cam curved surface, under the effect of Returnning spring 28, Fill valve spool 27 is in low order end, and valve port is closed.When highest point at cam curved surface, under the effect of controlling rod 20, overcome the effect of spring force, promote Fill valve spool 27 and be moved to the left, valve port is opened.
The automatic vent unit is installed in the valve body 57 with automatic repairing unit, and valve body 57 links to each other by link 51 with the ambient water pressure sensing unit.Middle shell 36 and upper shell 40 are connected by flange, and there are Sealing 46 sealings on the mating face.Link and valve body 57 are by being threaded, and the joint has Sealing 54 to seal.
Working principle of the present utility model is as follows:
1) mechanical type ambient water pressure sensing unit
Mechanical type ambient water pressure sensing unit is made up of rolling diaphragm 2, spring 10, packed-piston assembly and housing four major components.
The effect of spring 10 is to add a slight pressure in advance in hydraulic oil, and the compensatory pressure that guarantees hydraulic subsystem is invaded hydraulic system a little more than definite value of ambient water pressure to prevent seawater, pollutes hydraulic oil.Here employed spring 10 is a constant force spring 10, and promptly in certain operating range, spring tension does not change with the variation of the amount of deformation of spring, and its output remains constant force output.This no longer is subjected to the influence of spring deflection and keeps the constant definite value of ambient water pressure that is higher than with regard to having guaranteed compensatory pressure.
Moreover.This mechanical type ambient water pressure sensing unit has been carried out reliability design, both guaranteed, guaranteed again ought rolling diaphragm 2 wherein to break down and also can carry out work reliably the sensitivity of ambient water pressure on every side.This unit has rolling diaphragm 2, airtight cavity volume and piston assembly triple seal effect,
The sealing of first road is a rolling diaphragm 2.Rolling diaphragm 2 is kept apart seawater and hydraulic oil;
The sealing of second road is airtight cavity volume.Naturally formed an airtight cavity volume between packed-piston assembly and rolling diaphragm 2, it has a special purposes.Promptly, when mechanical type seawater pressure sensor is vertically installed, hydraulic oil almost is in static in this airtight cavity volume, internal pressure is identical with the oil pressure of sensor epicoele, lost efficacy in case rolling diaphragm 2 occurs, seawater enters this airtight cavity volume, because the proportion of hydraulic oil is lighter and always float on the seawater than seawater, seawater can not exceed oily separation layer and contact piston in this airtight cavity volume, finish unless the fluid in this airtight cavity volume all leaks.According to the Hydrostatic Transfer Device principle, in theory, the oil in the airtight cavity volume can not let out fully.Simultaneously, this airtight cavity volume has the effect of Hydrostatic Transfer Device again, and the precharge pressure of ambient water pressure and spring 10 is passed to piston assembly;
Three seals is a piston seal.Rubber is easily aging in long-term using process, and crackle appears in the to-and-fro motion fatiguability, causes seawater to invade hydraulic oil.Therefore, in order to improve the reliability of mechanical type ambient water pressure sensing unit, use a packed-piston assembly again, use teflon between this piston 15 and the upper shell 40, adopt the two way sealed structural type of spring-loaded automatic compensation as sealing material.Moreover because rolling diaphragm 2 is when responsive seawater pressure changes, its natural frequency is very high, need take measures to increase the damping of sensing unit, and this is second effect that increases piston at this.
2) automatic vent unit
By schematic diagram 1 as can be seen, by the ambient water pressure sensing unit ambient water pressure is passed to hydraulic oil, carry out pressure compensated oil pocket via a throttle orifice 26 to needs, carry out pressure compensated oil pocket by the epicoele of seawater pressure sensing unit with need and constitute a sealing cavity volume.This sealing cavity volume is full of air under original state, make it be in normal operative condition, needs to guarantee that this cavity volume is full of hydraulic oil, and the existence of air can influence the precision of propagation of pressure.Therefore, at the beginning of work, need the oil-filled exhaust of this sealing cavity volume.Exhaust unit is made up of outlet valve and throttle orifice 25, its venting principleand is: when initial conditions, since spring 22, the effect of spring 24, rolling diaphragm 2 in the mechanical type seawater pressure sensing unit is in position topmost with piston assembly, but still has a space that has air.At this moment, the valve port of exhaust unit is opened by the effect of controlling rod 20 on the piston, and communicates with fuel tank.When beginning is oil-filled, be in open mode always, air is wherein discharged by the valve port of exhaust unit, is full of this cavity volume up to hydraulic oil.After being full of hydraulic oil, because the effect in the hydraulic throttle hole 25 in the exhaust unit, oil produces a pressure reduction behind throttle orifice 25, will progressively set up pressure at this cavity volume, this pressure acts on the upper-end surface of piston assembly, force piston assembly to move down, the controlling rod that is fixed together with piston moves down with piston, controlling rod 58 moves to certain position, the controlling rod 20 of leaving behind, promote small plunger 21 by the cam curved surface on the controlling rod 20, promote exhaust plug 23 close port by spring 22, exhaust process finishes.
3) automatic repairing unit
Because leaking can appear in the long-term underwater operation characteristic of seawater pressure compensation device inevitably, causes oil starvation.Recharging oil device is an indispensable unit.This unit is by the reduction valve of automatic control outlet pressure.Throttle orifice 29 and Fill valve three parts are formed.Its basic functional principle is: the import of repairing unit is drawn from system's fuel supply line, by the pressure of reduction valve control repairing.The outlet pressure of this reduction valve is controlled jointly by the compensatory pressure and the pressing spring 30 of system, and the effect of pressing spring 30 is to make the pressure of the outlet pressure of reduction valve a little more than the pressure sensitive cells epicoele, guarantees normal repairing.The outlet pressure of reduction valve is because the effect of feedback pressure can be followed the variation of compensatory pressure automatically.The effect of throttle orifice 29 is to prevent when Fill valve is opened suddenly, causes the pressure of seawater pressure sensing unit epicoele to raise suddenly, compensatory pressure is produced impact.The switching of Fill valve is by controlling rod 20 controls that link to each other with piston rod 58, when the hydraulic fluid leak of seawater pressure sensing unit epicoele arrives to a certain degree, controlling rod 20 rises, back down repairing spool 27 left by the left cam curved surface on the controlling rod 20, Fill valve is opened, to the epicoele repairing of seawater pressure sensing unit.In the repairing process, controlling rod 20 moves down with piston assembly, until closing Fill valve again.In fact, controlling rod is a position control mechanism, because its effect is in the certain limit piston assembly position of seawater pressure sensing unit always.The amount of moving up and down of the piston assembly of seawater pressure sensing unit is in the normal range of operation of constant force spring, and therefore, the compensatory pressure that can satisfy underwater hydraulic system is higher than definite value of ambient water pressure all the time, has reduced the undulate quantity of compensatory pressure.
Claims (2)
1, a kind of ambient water pressure compensator of underwater hydraulic system is characterized in that it comprises: mechanical type ambient water pressure sensing unit, automatic vent unit and automatic repairing unit, wherein:
1) mechanical type ambient water pressure sensing unit: comprise housing, rolling diaphragm (2), fixed plate (3), hitch frame (4), pressing plate (9), constant force spring (10), roller bearing (11), piston (15), seal ring (16), pressing plate (17), controlling rod (20); In lower shell body, the outer ring of rolling diaphragm (2) is fixed on the lower shell body, with fixed plate (3), hitch frame (4) to folder, rolling diaphragm (2) links to each other with hitch frame (4), rolling diaphragm (2) is in quick condition in lower shell body, hitch frame (4) is connected with the drawing-off end of clamp device and constant force spring (10), constant force spring (10) be contained in middle shell about on two roller bearings (11), two roller bearings (11) and middle shell form and are rotatably assorted, and are contained in piston rod (58) and controlling rod (20) on the piston (15) in the upper shell for being slidingly connected;
2) automatic vent unit: comprise the outlet valve of forming by small plunger (21), first spring (22), outlet valve spool (23), second spring (24); The left end of small plunger (21) withstands on the cam curved surface of controlling rod (20) right flank, the right-hand member of small plunger (21) is pressed on first spring (22), first spring (22) is pressed in the left end of outlet valve spool (23), right-hand member at outlet valve spool (23) withstands on second spring (24), and the outlet of outlet valve is by first segment discharge orifice (25) exit;
3) automatic repairing unit: comprise the Fill valve of forming by Fill valve spool (27), Returnning spring (28), the repairing reduction valve of forming by pressing spring (30), repairing reduction valve spool (31); Fill valve spool (27) is pressed in to the right by Returnning spring (28) on the cam curved surface of controlling rod (20) left surface, links to each other by second throttle orifice (29) between Fill valve and the repairing reduction valve.
2, the ambient water pressure compensator of a kind of underwater hydraulic system according to claim 1 is characterized in that: said clamp device is to be connected with the drawing-off end of constant force spring (10) with nut (5), spring washer (6), screw (7), plain cushion (8), pressing plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108019 CN2654920Y (en) | 2003-11-11 | 2003-11-11 | Seawater environment pressure compensator for underwater hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108019 CN2654920Y (en) | 2003-11-11 | 2003-11-11 | Seawater environment pressure compensator for underwater hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2654920Y true CN2654920Y (en) | 2004-11-10 |
Family
ID=34342476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320108019 Expired - Lifetime CN2654920Y (en) | 2003-11-11 | 2003-11-11 | Seawater environment pressure compensator for underwater hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2654920Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862665A (en) * | 2011-07-05 | 2013-01-09 | 苏州桑泰海洋仪器研发有限责任公司 | Pressure balance retainer for underwater oil charge system |
| CN105605033A (en) * | 2014-11-24 | 2016-05-25 | 徐工集团工程机械股份有限公司 | Self-contained pressure compensating system and pressure monitoring method thereof |
| CN108895044A (en) * | 2018-09-25 | 2018-11-27 | 天津昊野科技有限公司 | A kind of pressure compensator of deepwater work device |
| WO2024209416A1 (en) * | 2023-04-05 | 2024-10-10 | Peskbo Llc | Hydraulic motor |
-
2003
- 2003-11-11 CN CN 200320108019 patent/CN2654920Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862665A (en) * | 2011-07-05 | 2013-01-09 | 苏州桑泰海洋仪器研发有限责任公司 | Pressure balance retainer for underwater oil charge system |
| CN105605033A (en) * | 2014-11-24 | 2016-05-25 | 徐工集团工程机械股份有限公司 | Self-contained pressure compensating system and pressure monitoring method thereof |
| CN105605033B (en) * | 2014-11-24 | 2018-05-01 | 徐工集团工程机械股份有限公司 | Self contained pressure compensating system and its pressure monitoring method |
| US10534381B2 (en) | 2014-11-24 | 2020-01-14 | Xuzhou Construciton Machinery Group Co., Ltd. | Self-contained pressure compensation system |
| CN108895044A (en) * | 2018-09-25 | 2018-11-27 | 天津昊野科技有限公司 | A kind of pressure compensator of deepwater work device |
| WO2024209416A1 (en) * | 2023-04-05 | 2024-10-10 | Peskbo Llc | Hydraulic motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2831407C (en) | Zero emissions reciprocating pump | |
| CN201265573Y (en) | Test bed for hydraulic cylinder | |
| CN109340220B (en) | Deep sea electro-hydrostatic actuator | |
| CN102678680B (en) | Large-capacity hydraulic compensation unit with constant compensation pressure allowance | |
| US4052088A (en) | Vehicle suspension units | |
| KR20200024138A (en) | Vacuum valve with pressure sensor | |
| EP2145109A1 (en) | Diaphragm pump position control with offset valve axis | |
| CN110494656B (en) | Electrohydraulic system for underwater use with an electrohydraulic actuator | |
| CN2660194Y (en) | Internal-external pressure balance pilot pressure compensation valve of underwater environmental hydraulic system | |
| CN2654920Y (en) | Seawater environment pressure compensator for underwater hydraulic system | |
| US4854554A (en) | Pneumatic spring structure with dual output force and pressure decay compensation and method of operation | |
| US4335884A (en) | Device for ensuring dynamic tightness, particulary for Stirling engine | |
| CN103398862A (en) | Testing method of linear valve pneumatic actuator | |
| CN1273750C (en) | Seawater environment pressure compensation in hydraulic system of underwater installations | |
| CN1287096C (en) | Leading control type pressure valve of underwater installation hydraulic system for environmental pressure compensation | |
| CN1279289C (en) | Linear pressure valve of underwater installation hydraulic system for environmental pressure compensation | |
| CN2660201Y (en) | Internal-external pressure balance directly driving pressure compensation valve of underwater environmental hydraulic system | |
| CN1621677A (en) | Fuel pump for an internal combustion engine | |
| CN2656687Y (en) | Underwater equipment hydraulic system pressure compensation direction flow quanting valve | |
| CN1544819A (en) | Hydraulic system pressure compensation direction valve for seawater environment | |
| WO2013033053A1 (en) | Hydraulic seal assembly for a thermoplastic material dispensing valve assembly | |
| US3681918A (en) | Piston accumulator and system using the same for use with high pressure hydraulic apparatus | |
| EP2581635A1 (en) | Seals | |
| RU180585U1 (en) | Door closer | |
| CN221857144U (en) | Diaphragm type compensation oil tank of electrohydraulic actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20031111 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |