CN104179881A - Buffering system for self-elevating platform - Google Patents
Buffering system for self-elevating platform Download PDFInfo
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- CN104179881A CN104179881A CN201410346257.2A CN201410346257A CN104179881A CN 104179881 A CN104179881 A CN 104179881A CN 201410346257 A CN201410346257 A CN 201410346257A CN 104179881 A CN104179881 A CN 104179881A
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Abstract
The invention discloses a buffering system for a self-elevating platform, belongs to the technical field of ocean engineering, and is applicable to buffering of impacts on a double-acting oil cylinder. The system comprises an overflow valve and an oil tank, wherein a rod cavity and a rodless cavity of the double-acting oil cylinder are communicated with an oil inlet of the overflow valve and the oil tank respectively, and an oil outlet of the overflow valve is communicated with the oil tank; a first one-way valve is arranged on a pipeline where the rod cavity is communicated with the oil inlet of the overflow valve; a second one-way valve is arranged on a pipeline where the rod cavity is communicated with the oil tank; a third one-way valve is arranged on a pipeline where the rodless cavity is communicated with the oil inlet of the overflow valve; a fourth one-way valve is arranged on a pipeline where the rodless cavity is communicated with the oil tank. The four one-way valves are used for controlling flow directions of oil paths among the rod cavity, the rodless cavity, the overflow valve and the oil tank, suddenly-pressurized hydraulic oil can overflow back to the oil tank through the overflow valve no matter whether the rod cavity or the rodless cavity is pressurized due to the impacts, meanwhile, oil supplementation can be performed on depressurized positions through the one-way valves by the aid of the oil tank, and finally, the impact buffering effect is realized.
Description
Technical field
The present invention relates to field of ocean engineering, particularly a kind of jack-up unit buffer system.
Background technique
Along with deepening continuously of marine exploration and development, the research of self-elevating ocean platform also receives increasing concern.
Self-elevating ocean platform mainly comprises spud leg, lowering or hoisting gear and main platform body, and lowering or hoisting gear is the nucleus equipment of platform.Lowering or hoisting gear is arranged on spud leg and encloses trap place, and by driving the lowering or hoisting gear can implementation platform main body and the relative movement of spud leg, lowering or hoisting gear generally uses hydraulic system to complete lifting and fixing action, and hydraulic system comprises two-way cylinder and other hydraulic packages.The operation procedure of self-elevating ocean platform is generally as follows: by platform towage to working position-put stake-pitching pile-precompressed-peaceful-operation support (fulfiling assignment)-fall platform-pile pulling-by platform towage to next working position.
But realizing in process of the present invention, inventor finds that prior art at least exists following problem:
In the time putting stake operation, platform and spud leg are in floating condition, along with effect platform and the spud leg of wave can teetertotter along with wave, when spud leg is put stake when approaching seabed, platform teetertotters and can make spud leg and seabed collision and then generation impact, and this impact meeting is delivered on platform and lowering or hoisting gear by the two-way cylinder of hydraulic system.Existing self-elevating ocean platform fails this impact force to carry out buffered, the destruction of platform and lowering or hoisting gear easy recurring structure under huge percussion.
Summary of the invention
In order to solve the problems of the prior art, the embodiment of the present invention provides a kind of jack-up unit buffer system.Technological scheme is as follows:
The embodiment of the present invention provides a kind of jack-up unit buffer system, be applicable to cushion the suffered impact of two-way cylinder, described two-way cylinder comprises rod chamber and rodless cavity, described system comprises relief valve and fuel tank, the rod chamber of described two-way cylinder is all communicated with filler opening and the described fuel tank of described relief valve respectively with rodless cavity, and the oil outlet of described relief valve is communicated with described fuel tank;
On the pipeline that described rod chamber is communicated with the filler opening of described relief valve, be provided with the first one-way valve, described the first one-way valve only allows to flow to from described rod chamber the oil circuit conducting of described relief valve;
On the pipeline that described rod chamber is communicated with described fuel tank, be provided with the second one-way valve, described the second one-way valve only allows to flow to from described fuel tank the oil circuit conducting of described rod chamber;
On the pipeline that described rodless cavity is communicated with the filler opening of described relief valve, be provided with the 3rd one-way valve, described the 3rd one-way valve only allows to flow to from described rodless cavity the oil circuit conducting of described relief valve;
On the pipeline that described rodless cavity is communicated with described fuel tank, be provided with the 4th one-way valve, described the 4th one-way valve only allows to flow to from described fuel tank the oil circuit conducting of described rodless cavity.
Further, described system also comprises the first accumulator, and the filler opening of described the first accumulator is communicated with described rod chamber.
Preferably, described the first accumulator is spring loaded accumulator.
Further, described system also comprises the second accumulator, and the filler opening of described the second accumulator is communicated with described rodless cavity.
Preferably, described the second accumulator is spring loaded accumulator.
Further, described system also comprise for unblank or close oil circuit first open and close valve, described first open and close valve is directly communicated with described rod chamber.
Preferably, described the first keying valve is stop valve.
Further, described system also comprise for unblank or close oil circuit second open and close valve, described second open and close valve is directly communicated with described rodless cavity.
Preferably, described the second keying valve is stop valve.
Further, described system also comprises the first equilibrium valve and the second equilibrium valve, and described the first equilibrium valve and described the second equilibrium valve are separately positioned on the pipeline that is communicated with described rod chamber and described rodless cavity.
The beneficial effect of the technological scheme that the embodiment of the present invention provides is:
By using relief valve and fuel tank to be communicated with rod chamber and the rodless cavity of two-way cylinder; use the flow direction of four oil circuits between one-way valve control rod chamber, rodless cavity and relief valve and fuel tank simultaneously; no matter be rod chamber or rodless cavity supercharging because impact; suddenly the hydraulic oil of pressurization all can overflow back fuel tank by relief valve; be that repairing is carried out in step-down place by fuel tank through one-way valve simultaneously; finally reach the effect of shock absorbing, lowering or hoisting gear and platform that protection is associated with two-way cylinder are not damaged.
Brief description of the drawings
Fig. 1 is the hydraulic schematic diagram of a kind of jack-up unit buffer system of providing of the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment
Referring to Fig. 1, the embodiment of the present invention provides a kind of jack-up unit buffer system, be applicable to cushion the suffered impact of two-way cylinder 1, two-way cylinder 1 comprises rod chamber 11 and rodless cavity 12, this system comprises relief valve 2 and fuel tank 3, the rod chamber 11 of two-way cylinder 1 is all communicated with filler opening and the fuel tank 3 of relief valve 2 respectively with rodless cavity 12, and the oil outlet of relief valve 2 is communicated with fuel tank 3; On the pipeline that rod chamber 11 is communicated with the filler opening of relief valve 2, be provided with 41 permissions of the first one-way valve 41, the first one-way valve flow to relief valve 2 oil circuit conducting from rod chamber 11; On the pipeline that rod chamber 11 is communicated with fuel tank 3, be provided with 42 permissions of the second one-way valve 42, the second one-way valve flow to rod chamber 11 oil circuit conducting from fuel tank 3; On the pipeline that rodless cavity 12 is communicated with the filler opening of relief valve 2, be provided with 43 permissions of the 3rd one-way valve 43, the three one-way valve flow to relief valve 2 oil circuit conducting from rodless cavity 12; On the pipeline that rodless cavity 12 is communicated with fuel tank 3, be provided with 44 permissions of the 4th one-way valve 44, the four one-way valve flow to rodless cavity 12 oil circuit conducting from fuel tank 3.
Particularly, jack-up unit put stake process in, when the shoe of spud leg soon contacts seabed, because making platform, wave waves, the whole Action of Gravity Field of spud leg is now gone up at latch (latch is connected with the piston rod of two-way cylinder), can drive spud leg to wave when platform waves, and spud leg more easily clashes into seabed in the process of waving, the impact force producing because of shock can pass to latch by spud leg, finally passes to whole elevating system.Impact force meeting direct effect is to two-way cylinder 1, the rod chamber 11 of two-way cylinder 1 or the pressure of rodless cavity 12 place's fluid are raise suddenly, by using relief valve 2 to be connected the rod chamber 11 and rodless cavity 12 of two-way cylinder with fuel tank 3, impact energy can be converted to hydraulic energy and alleviate; 43, the first one-way valve 41 and the 3rd one-way valve allow the fluid of high pressure to overflow back fuel tank 3 through relief valve 2, because rod chamber 11 or rodless cavity 12 can cause an other side's pressure to reduce suddenly when wherein a side pressure increases suddenly, for stablizing of maintenance medium pressing system, the high pressure oil that overflows back fuel tank 3 can pass through the second one-way valve 42 or the lower side of the 4th one-way valve 44 feed pressures, the balance of maintenance medium pressing system in shock absorbing.
Further, the buffering of the present embodiment also comprises that the filler opening of the first accumulator 51, the first accumulators 51 is communicated with rod chamber 11.
Particularly, accumulator is a kind of energy savings device conventional in hydraulic system, accumulator can change the energy in system into compression energy in due course or potential energy stores, in the time that system needs, accumulator changes compression energy or potential energy the energy such as hydraulic pressure or air pressure into and discharges again, and make-up system again, in the time that system instantaneous pressure increases, accumulator can absorb the energy of this part, normal to ensure whole system pressure; In the present embodiment, the first accumulator 51 is as auxiliary buffering device, the hydraulic energy that when absorbing two-way cylinder 1 and being subject to impacting, rod chamber 11 places discharge.
Preferably, the first accumulator 51 can be spring loaded accumulator.
Particularly, spring loaded accumulator relies on Compress Spring the superfluous pressure energy in hydraulic system is converted into spring potential energy stores, while needs, can again energy be discharged, and spring loaded accumulator simple in structure, cost is lower.Easily know, use spring loaded accumulator only as preferably a kind of, in other embodiments, the first accumulator 51 can also be weighted accumulator, gas type accumulator etc.
Further, the buffer system of the present embodiment also comprises that the filler opening of the second accumulator 52, the second accumulators 52 is communicated with rodless cavity 12.
Particularly, in the present embodiment, the second accumulator 52 is as auxiliary buffering device, the hydraulic energy that when absorbing two-way cylinder 1 and being subject to impacting, rodless cavity 12 places discharge.
Preferably, the second accumulator 52 can be spring loaded accumulator.
Easily know, use spring loaded accumulator only preferred as the one of the present embodiment, in other embodiments, the second accumulator 52 can also be weighted accumulator, gas type accumulator etc.
Further, the buffer system of the present embodiment also comprises that the first keying valve 61, the first keying valves 61 for opening or cut out oil circuit are directly communicated with rod chamber 11.
Particularly, first opens and closes valve 61 keeps often opening putting in an operating process, can close the first keying valve 61 and carry out pressurize in the time of system pressure balance.
Preferably, the first keying valve 61 can be stop valve.
Particularly, stop valve claims again pipe valve valve, belongs to forced seal formula valve, is suitable for very much cut-out, adjusting and throttling to oil circuit; Easily know, use stop valve only as preferably a kind of, in other embodiments, the first keying valve 61 can also be ball valve.
Further, the buffer system of the present embodiment also comprises that the second keying valve 62, the second keying valves 62 for opening or cut out oil circuit are directly communicated with rodless cavity 12.
Particularly, second opens and closes valve 62 keeps often opening putting in an operating process, can close the second keying valve 62 and carry out pressurize in the time of system pressure balance.
Preferably, the second keying valve 62 can be stop valve.
Easily know, use stop valve only preferred as the one of the present embodiment, in other embodiments, the second keying valve 62 can also be the valves such as ball valve.
Further, the buffer system of the present embodiment also comprises that the first equilibrium valve 71 and the second equilibrium valve 72, the first equilibrium valves 71 and the second equilibrium valve 72 are separately positioned on the pipeline that is communicated with rod chamber 11 and rodless cavity 12.
Particularly, in the present embodiment, the first equilibrium valve 71 and the second equilibrium valve 72 are for controlling the leading type valve of buffer system working connection break-make, only, in the time that two-way cylinder 1 carries out switch operation, main fuel tank (not shown) is just understood fuel feeding control the first equilibrium valve 71 and the second equilibrium valve 72 and is got through oil circuit.
The working procedure of the buffer system that the embodiment of the present invention provides is specific as follows:
When system is not hit under normal circumstances, the two-way cylinder 1 of system has two kinds of working staties, the first state: system control is from the second equilibrium valve 72 fuel feeding, the first equilibrium valve 71 places oil return, and now the piston rod of two-way cylinder 1 does stretching motion;
The second state: system control is from the first equilibrium valve 71 fuel feeding, the second equilibrium valve 72 places oil return, now the piston rod of two-way cylinder 1 does retraction movement.
Run into and impact and in the first state in the situation that, now piston rod does stretching motion in system;
If piston rod is subject to downward temporary impact, the instantaneous increase of pressure of rodless cavity 12, pressure in the oil circuit that the high pressure that impact produces is communicated with far above rodless cavity 12, impacts the high pressure oil producing if not being absorbed and cushioning, and will damage the mechanical device of lifting.Now high pressure oil is absorbed by the second accumulator 52 by second keying valve 62 parts, and a part is opened relief valve 2 by the 3rd one-way valve 43 and realized overflow.Instantaneous impact brings the pressure of rodless cavity 12 to increase, cause the instantaneous suction sky of pressure of rod chamber 11 simultaneously, instantaneous the reducing of rod chamber 11 pressure, for maintaining system pressure balance, rod chamber 11 places need repairing, and after fuel tank 3 places fill into the high pressure oil overflowing back, pressure is higher, part hydraulic oil can pass through the second one-way valve 42, supplement fluid to rod chamber 11 through the first keying valve 61, meanwhile, also can carry out repairing for rod chamber 11 by the first accumulator 51.
If piston rod is subject to temporary impact upwards, now piston rod is originally in doing stretching motion, rodless cavity 12 pressure reduce, rod chamber 11 pressure increase, in the case, system itself is being carried out rod chamber 11 oil returns, rodless cavity 12 oil-feeds, it is identical that the direction of impact force and hydraulic system oil circuit flow to, and impact is released.
Run into and impact and in the second state in the situation that, now piston rod does retraction movement in system;
If piston rod is subject to temporary impact upwards, the instantaneous increase of pressure of rod chamber 11, pressure in the oil circuit that the high pressure that impact produces is communicated with far above rod chamber 11, impacts the high pressure oil producing if not being absorbed and cushioning, and will damage the mechanical device of lifting.Now high pressure oil is absorbed by the first accumulator 51 by first keying valve 61 parts, and a part is opened relief valve 2 by the first one-way valve 41 and realized overflow.Instantaneous impact brings the pressure of rod chamber 11 to increase, cause the instantaneous suction sky of pressure of rodless cavity 12 simultaneously, instantaneous the reducing of rodless cavity 12 pressure, for maintaining system pressure balance, rodless cavity 12 places need repairing, and after fuel tank 3 places fill into the high pressure oil overflowing back, pressure is higher, part hydraulic oil can pass through the 4th one-way valve 42, supplementing fluid to rodless cavity 12 through the second keying valve 62, meanwhile, can be also rodless cavity 12 repairings by the second accumulator 52.
If piston rod is subject to downward temporary impact, now piston rod is originally in doing retraction movement, rod chamber 11 pressure reduce, rodless cavity 12 pressure increase, in the case, system itself is being carried out rodless cavity 12 oil returns, rod chamber 11 oil-feeds, it is identical that the direction of impact force and hydraulic system oil circuit flow to, and impact is released.
A kind of jack-up unit buffer system that the embodiment of the present invention provides, by using relief valve and fuel tank to be communicated with rod chamber and the rodless cavity of two-way cylinder, use four one-way valve control rod chambers simultaneously, the flow direction of the oil circuit between rodless cavity and relief valve and fuel tank, no matter be rod chamber or rodless cavity supercharging because impact, suddenly the hydraulic oil of pressurization all can overflow back fuel tank by relief valve, be that repairing is carried out in step-down place by fuel tank through one-way valve simultaneously, finally reach the effect of shock absorbing, lowering or hoisting gear and platform that protection is associated with two-way cylinder are not damaged.Meanwhile, the embodiment of the present invention is also provided with multiple accumulators, and accumulator has auxiliary buffering, has strengthened the ability that system balancing is impacted.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a jack-up unit buffer system, is applicable to cushion the suffered impact of two-way cylinder, and described two-way cylinder comprises rod chamber and rodless cavity, it is characterized in that, described system comprises relief valve and fuel tank,
The rod chamber of described two-way cylinder is all communicated with filler opening and the described fuel tank of described relief valve respectively with rodless cavity, and the oil outlet of described relief valve is communicated with described fuel tank;
On the pipeline that described rod chamber is communicated with the filler opening of described relief valve, be provided with the first one-way valve, described the first one-way valve only allows to flow to from described rod chamber the oil circuit conducting of described relief valve;
On the pipeline that described rod chamber is communicated with described fuel tank, be provided with the second one-way valve, described the second one-way valve only allows to flow to from described fuel tank the oil circuit conducting of described rod chamber;
On the pipeline that described rodless cavity is communicated with the filler opening of described relief valve, be provided with the 3rd one-way valve, described the 3rd one-way valve only allows to flow to from described rodless cavity the oil circuit conducting of described relief valve;
On the pipeline that described rodless cavity is communicated with described fuel tank, be provided with the 4th one-way valve, described the 4th one-way valve only allows to flow to from described fuel tank the oil circuit conducting of described rodless cavity.
2. system according to claim 1, is characterized in that, described system also comprises the first accumulator, and the filler opening of described the first accumulator is communicated with described rod chamber.
3. system according to claim 2, is characterized in that, described the first accumulator is spring loaded accumulator.
4. system according to claim 1, is characterized in that, described system also comprises the second accumulator, and the filler opening of described the second accumulator is communicated with described rodless cavity.
5. system according to claim 4, is characterized in that, described the second accumulator is spring loaded accumulator.
6. system according to claim 1, is characterized in that, described system also comprise for unblank or close oil circuit first open and close valve, described first open and close valve is directly communicated with described rod chamber.
7. system according to claim 6, is characterized in that, described the first keying valve is stop valve.
8. system according to claim 1, is characterized in that, described system also comprise for unblank or close oil circuit second open and close valve, described second open and close valve is directly communicated with described rodless cavity.
9. system according to claim 8, is characterized in that, described the second keying valve is stop valve.
10. system according to claim 1, is characterized in that, described system also comprises the first equilibrium valve and the second equilibrium valve, and described the first equilibrium valve and described the second equilibrium valve are separately positioned on the pipeline that is communicated with described rod chamber and described rodless cavity.
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| CN201410346257.2A CN104179881B (en) | 2014-07-18 | 2014-07-18 | A kind of jack-up unit buffer system |
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| CN201410346257.2A CN104179881B (en) | 2014-07-18 | 2014-07-18 | A kind of jack-up unit buffer system |
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| CN104179881B CN104179881B (en) | 2017-09-01 |
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| CN104533867A (en) * | 2014-12-09 | 2015-04-22 | 广东精铟机械有限公司 | Buffer device of hydraulic lift of self-elevating ocean platform and design method thereof |
| CN105862700A (en) * | 2016-03-30 | 2016-08-17 | 武汉船用机械有限责任公司 | Plug pin lifting mechanism suitable for lifting platform |
| CN106763465A (en) * | 2017-03-07 | 2017-05-31 | 江苏大学 | A kind of passive vibration reduction platform of six degree of freedom master |
| CN109371843A (en) * | 2018-11-26 | 2019-02-22 | 中铁大桥科学研究院有限公司 | A kind of multi-functional jack set up for bridge spanning the sea Simply-supported Steel Beams |
| CN110894731A (en) * | 2019-11-28 | 2020-03-20 | 徐工集团工程机械股份有限公司 | Working device buffer system and engineering equipment |
| CN111664135A (en) * | 2020-04-23 | 2020-09-15 | 武汉船用机械有限责任公司 | Hydraulic system of gear rack lifting platform |
| CN113983110A (en) * | 2021-10-08 | 2022-01-28 | 山东大学 | Machine-liquid combined buffer for rock burst |
| CN115405581A (en) * | 2022-08-23 | 2022-11-29 | 湖南中联重科智能高空作业机械有限公司 | Balance valve group, aerial work platform and variable amplitude hydraulic control system thereof |
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| CN111664135A (en) * | 2020-04-23 | 2020-09-15 | 武汉船用机械有限责任公司 | Hydraulic system of gear rack lifting platform |
| CN113983110A (en) * | 2021-10-08 | 2022-01-28 | 山东大学 | Machine-liquid combined buffer for rock burst |
| CN113983110B (en) * | 2021-10-08 | 2022-06-17 | 山东大学 | Machine-liquid combined buffer for rock burst |
| CN115405581A (en) * | 2022-08-23 | 2022-11-29 | 湖南中联重科智能高空作业机械有限公司 | Balance valve group, aerial work platform and variable amplitude hydraulic control system thereof |
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