CN106321531A - Energy accumulator system - Google Patents
Energy accumulator system Download PDFInfo
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- CN106321531A CN106321531A CN201510374431.9A CN201510374431A CN106321531A CN 106321531 A CN106321531 A CN 106321531A CN 201510374431 A CN201510374431 A CN 201510374431A CN 106321531 A CN106321531 A CN 106321531A
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- Prior art keywords
- accumulator
- hollow piston
- energy
- accumulator system
- hydraulic oil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention provides an energy accumulator system. The energy accumulator system comprises a fluid supply unit, a pressure converting unit, an energy accumulating unit and a control unit. The pressure converting unit comprises a tubular shell, a hollow piston and a hydraulic oil cavity, wherein the hollow piston is connected with the tubular shell in a sleeved manner and is pushed by fluid supplied by the fluid supply unit to move in the tubular shell, and the hydraulic oil cavity is used for storing hydraulic oil. The energy accumulating unit comprises a first energy accumulator, wherein the hydraulic oil in the hydraulic oil cavity is pressed into the first energy accumulator when the hollow piston is pushed by the fluid. The control unit controls the flow of the fluid of the pressure converting unit. By the adoption of the energy accumulator system, circulatory pressurization can be conducted on the energy accumulators of downhole tools through the energy of fluid in a shaft so that the running time of the energy accumulators can be prolonged, and the sizes of the energy accumulators can be reduced; and in this way, the number of energy accumulating holes can be reduced so that the damage to the structural strength of the downhole tools can be relieved, and a foundation is laid for research and development of new downhole tools and new downhole operation technologies.
Description
Technical field
The present invention relates to a kind of energy storage equipment, and particularly to a kind of can the accumulator system of pressurising.
Background technology
Along with drilling well, the development of completion production technology, during being drilled well, shaping, salvaging, in pit shaft
The downhole tool of start, such as drill-following reamer, rotary steering bottom hole assembly, completion well sliding, demixing injection-production instrument etc.
Demand is the most increasing.The action of downhole tool needs energy to drive, but is limited by conditions down-hole, conventional
Energy source is mainly provided by liquid circulation and cable in tubing string tension and compression, well.And when liquid in tubing string tension and compression, well
When the mode of circulation and cable power supply is inapplicable, it is necessary to integrated energy storage device on instrument, such as accumulator
(offer hydraulic energy), battery (offer electric energy) etc. to provide energy for downhole tool.Due to hydraulic system pair
Temperature, pressure adaptability good, therefore have broad application prospects.
But, existing down-hole accumulator system, owing to being affected by limited space in well, often results in accumulation of energy
The capacity of device is big not, and then causes the problem that action of tool number of times, amplitude, working time be restricted.And
And, in order to expand the capacity of accumulator as much as possible, need in tool base, to arrange more accumulation of energy hole, also
Thus reduce the structural strength of tool base；And because the requirement on machining accuracy in accumulation of energy hole is high, the most also make
Become difficulty of processing big, the problem that production cost is high.Additionally, due to the problem of the energy leakage of accumulator can not
Avoid, the accumulator system of the pressurising stand-by time in down-hole can not be often difficult to meet the needs of underground work.
These problems all limit accumulator system application in downhole tool, also limit downhole tool in turn
Development.
Summary of the invention
The technical problem to be solved be in order to overcome in prior art can not the accumulator of pressurising standby
Limited time, it is impossible to the problem providing enough energy for downhole tool.
For the problems referred to above, the present invention proposes a kind of accumulator system, including: fluid feeding unit；Pressure
Converting unit, including: tubular shell；Hollow piston, is socketed in described tubular shell, is supplied by described fluid
Answer the promotion of the fluid that unit supplied and move in described tubular shell；And hydraulic fluid chamber, it is used for storing
Hydraulic oil；Storage Unit, including the first accumulator, when described hollow piston is by described fluid forces, described liquid
Hydraulic oil in pumping cavity is pressed into described first accumulator；And control unit, control to be turned by described pressure
Change the flow of the described fluid of unit.
In one embodiment, described tubular shell has large diameter section and little internal diameter section；Described hollow piston bag
Include the bar portion sealing the end that coordinates with described large diameter section and coordinating with the sealing of described little internal diameter section, described greatly
The inwall of internal diameter section, described end, the outer wall in described bar portion and described little internal diameter section surround the first cavity；Institute
State hydraulic fluid chamber to be arranged in described little internal diameter section, and connect with described first cavity and Storage Unit.
In one embodiment, described pressure conversion unit also includes the pressurising being arranged in described first cavity
Post, one end of described pressurising post is fixed on the end of described hollow piston, and other end sealing shroud is connected to described liquid
In pumping cavity.
In one embodiment, the described bar portion of described hollow piston is arranged with flexible member.
In one embodiment, the described bar portion of described hollow piston and or pressurising post on be arranged with elastic unit
Part.
In one embodiment, described Storage Unit also includes being connected with described hydraulic fluid chamber and the first accumulator
The second accumulator, described first accumulator release hydraulic oil flow into described second accumulator.
In one embodiment, between described hydraulic fluid chamber and described first accumulator and described hydraulic fluid chamber with
It is respectively arranged with check valve between described second accumulator.
In one embodiment, the logical oil circuit between described first accumulator and described second accumulator also sets
It is equipped with overflow valve.
In one embodiment, it is provided with in described tubular shell for limiting described hollow piston moving range
Stop part.
In one embodiment, described end has truncated cone-shaped spigot surface.
The embodiment of the accumulator system according to the present invention, in available pit shaft, the energy of liquid is downhole tool
Accumulator circulation pressurising such that it is able to improve the stand-by time of accumulator, reduce the volume of accumulator, and then subtract
The quantity in little accumulation of energy hole is to alleviate the damage that the structural strength to downhole tool causes, for researching and developing new downhole tool
Provide the foundation with new underground work technique.
Accompanying drawing explanation
Hereinafter based on embodiment reference accompanying drawing, the present invention will be described in more detail.Wherein:
Fig. 1 is the block schematic illustration of the accumulator system of embodiments of the invention；
Fig. 2 is the structural representation of the Storage Unit of the accumulator system of embodiments of the invention；
Fig. 3 a is the schematic cross-section of the first embodiment of the pressure conversion unit of embodiments of the invention；
Fig. 3 b is the first embodiment of the pressure conversion unit of embodiments of the invention A-A' line along Fig. 3 a
Generalized section；
Fig. 4 is the schematic cross-section of the second embodiment of the pressure conversion unit of embodiments of the invention；
Fig. 5 be the present invention the schematic cross-section of the 3rd embodiment of pressure conversion unit of embodiment；And
Fig. 6 is the schematic cross-section of the alternate embodiment of the pressure conversion unit of embodiments of the invention.
In the accompanying drawings, identical parts use identical or corresponding reference.Accompanying drawing is not according to actual ratio
Example is drawn.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 show schematically show the frame diagram of the accumulator system 10 of embodiments of the invention, and it includes control
Unit 100 processed, fluid feeding unit 200, pressure conversion unit 300 and Storage Unit 400.At oil well
In lower operation, fluid feeding unit 200 can be the well pump pumping into the well liquid such as drilling fluid, fracturing fluid in pit shaft.
Correspondingly, control unit 100 is used for controlling the flow of the well liquid that liquid supplying unit 200 is supplied in pit shaft,
And then the pressure of the well liquid that control is suffered by pressure conversion unit 300.Pressure conversion unit 300 and Storage Unit
400 are arranged in pit shaft, and the start for underground operation tool M provides hydraulic energy.Accumulator according to the present invention
System 10, control unit 100 controls the liquid stream that liquid supplying unit 200 is supplied to pressure conversion unit 300
Amount, the energy conversion of liquid is hydraulic energy by pressure conversion unit 300, and is stored in Storage Unit 400,
Thus realize the pressurising to Storage Unit 400.The hydraulic energy of Storage Unit 400 storage is used for driving downhole tool
The start of M.
Fig. 2 shows the structural representation of the Storage Unit 400 of the accumulator system 10 of embodiments of the invention.
According to a preferred embodiment of the invention, control unit 100 is by controlling liquid supplying unit 200 to pressure
The change of the flow generating period of the liquid of supply in converting unit 300, and then make control pressure conversion unit
The pressure of the well liquid suffered by 300 also can the change of generating period, it is achieved Storage Unit 400 is circulated pressurising,
And then energy can be provided for downhole tool M for a long time.
Specifically, by Fig. 2 it will be seen that the Storage Unit 400 of embodiments of the invention includes the first accumulation of energy
Device the 401, second Storage Unit 402 and check valve 403,404.Hydraulic oil pipe is passed through in one end of Storage Unit
Being connected with pressure conversion unit 300, the other end is connected to downhole tool M.In described pressure conversion unit 300
Storage has hydraulic oil, when the energy of the liquid in pit shaft is converted into hydraulic energy by it, and pressure conversion unit 300
In the effect that is under pressure of hydraulic oil be pressed into high pressure accumulator, in the i.e. first accumulator 401.First accumulation of energy
Device 401 acts on downhole tool M, and hydraulic oil becomes low pressure after performing loop by the hydraulic pressure of downhole tool M
Hydraulic oil, and it is flowed into low pressure accumulator, in the i.e. second accumulator 402.For realizing Storage Unit 400
Circulation pressurising, the pressure conversion unit 300 in embodiments of the invention is configured to can be by the second accumulator 402
In low-pressure hydraulic oil be sucked back in pressure conversion unit 300, to carry out pressurising next time.
Owing to being respectively arranged with between pressure conversion unit 300 and the first accumulator 401 and the second accumulator 402
Check valve 403,404 such that it is able to ensure that the high pressure liquid force feed flowed out from pressure conversion unit 300 can only flow into
In first accumulator 401, and pressure conversion unit 300 also can only be by the hydraulic oil in the second accumulator 402
It is sucked back in pressure conversion unit 300, and then achieves hydraulic oil at pressure conversion unit 300 and Storage Unit
Circulating between 400.
Preferably, damage because of hypertonia for anti-locking system, as in figure 2 it is shown, the first accumulator 401 with
Overflow valve 405 is there also is provided, when the pressure in the first accumulator reaches on oil circuit between second accumulator 402
After setting pressure, overflow valve 405 is opened, and unnecessary hydraulic oil will flow into the second accumulator by overflow valve 405
In 402, wait and being again sucked back in pressure conversion unit 300.
Fig. 3 a to Fig. 6 respectively illustrates the schematic diagram of the different embodiments of the pressure conversion mechanism of the present invention.Under
The operation principle of the pressure conversion mechanism of embodiments of the invention is described in detail by face by combining accompanying drawing.
[the first embodiment]
Fig. 3 a shows the schematic cross-section of the first embodiment of the pressure conversion mechanism 300 of the present invention, figure
3b shows the generalized section of A-A' line along Fig. 3 a.From Fig. 3 a and Fig. 3 b it will be seen that pressure is changed
Unit 300 has tubular shell 301, in underground work, and pipe pressure conversion unit can being connected in well
On road, and the part as pipeline is passed through for well liquid stream is dynamic.In addition to tubular shell 301, pressure conversion unit
300 also include hollow piston 302 and hydraulic fluid chamber 303.Wherein, tubular shell 301 includes large diameter section
3011 and little internal diameter section 3012.Hollow piston 302 includes sealing, with large diameter section 3011, the end 3021 coordinated
And seal, with little internal diameter section 3012, the bar portion 3022 coordinated.Hollow piston 302 has and tubular shell 301
Coaxial central through hole, well liquid is flowed in tubular shell 301 by central through hole.As shown in Figure 3 a, imperial palace
The inwall of footpath section 3011, end 3021, the outer wall in bar portion 3022 and little internal diameter section 3012 cooperatively form
One cavity 304.Little internal diameter section 3012 is disposed with hydraulic fluid chamber 303, hydraulic fluid chamber 303 and the first cavity
304 and Storage Unit 400 connect.In the present embodiment, the first cavity 304 and hydraulic fluid chamber 303 all fill
Full hydraulic oil.
When Storage Unit 400 is carried out pressurising, control unit 100 controls to be supplied by pressure conversion unit 300
Hollow piston 302 pressure experienced should be increased to the flow of the liquid in flow converting unit 300, makes hollow
Piston 302 moves under the promotion of liquid, and the volume of the first cavity 304 reduces therewith, and then by hydraulic fluid chamber
Hydraulic oil in 303 is pressed in Storage Unit 400.Knowable to the explanation to Fig. 2, hydraulic oil is pressed into
In the first accumulator 401, thus complete a Plenum Process.
In the present embodiment, pressure conversion unit 300 also has the bar portion 3022 being set in hollow piston 302
On spring 305.When the first cavity 304 is compressed, spring 305 is compressed the most therewith, thus is stored bullet
Property potential energy.After completing the pressurising to Storage Unit 400, liquid supply can be controlled by control unit 100 single
Unit 200 reduces the flow of the liquid being fed in pressure conversion unit 300, i.e. reduces the end of hollow piston 302
The pressure of the liquid that face is subject to, spring 305 discharges elastic potential energy, so that hollow piston 302 is at spring 305
Effect under move to the direction expanding the first cavity 304.Now, due to the first cavity 304 and hydraulic fluid chamber
303 compositions are airtight spaces, and the hydraulic oil in the second accumulator 402 in Storage Unit 400 can be inhaled
Enter in hydraulic fluid chamber 303.The hydraulic oil being drawn in hydraulic fluid chamber 303 can be used for again to the first accumulation of energy list
The pressurising of unit 401 such that it is able to realize the circulation pressurising to Storage Unit 400.Those skilled in the art can
To be understood by, spring 305 can be replaced other the elastic component such as cushion, as long as being capable of the present invention's
Purpose.
For guaranteeing the first cavity 304 and the sealing of hydraulic fluid chamber 303, with tubular shell on hollow piston 302
The position of body 301 contact is provided with sealing member 306, thus avoids hollow piston 302 during movement
Pressure leakages.Meanwhile, in order to avoid, hollow piston 302 is excessive under the effect of spring 305 to be moved and makes sky
The be indecisive and changeable bar portion 3022 of plug 302 departs from the little internal diameter section 3012 of tubular shell 301, i.e. destroys the first cavity 304
Sealing, it is preferable that be additionally provided with on tubular shell and limit the first of hollow piston 302 moving range only
Block piece 3071., it is damaged in order to avoid the excess compression of spring meanwhile, tubular shell 301 also sets
It is equipped with the second stop part 3072 limiting hollow piston 302 moving range.In the embodiment that Fig. 3 a shows,
Stop part 3072 is arranged in the first cavity 304, in Plenum Process, and hollow piston 302 compression spring 305
After moving to a certain degree, the second stop part 3072 meeting barrier end termination 3021, so that hollow piston 302 will not
Continue to move to.
Additionally, only show a hydraulic fluid chamber 303 in Fig. 3 a and Fig. 3 b, and can basis in actual application
Need to select two or more hydraulic fluid chamber 303, the present invention its quantity not to be done concrete restriction.
[the second embodiment]
Fig. 4 shows second embodiment of the pressure conversion unit 300' of the present invention, wherein with the first embodiment party
Formula is identical or corresponding parts use identical with the first embodiment or corresponding reference.For convenience,
Distinctive points with the first embodiment is the most only described.Second embodiment and the difference of the first embodiment
Being, being additionally provided with pressurising post 308 in the first cavity 304, its one end is fixed on the end of hollow piston 302
In portion 3021, the other end is socketed in hydraulic fluid chamber 303.Now, hydraulic fluid chamber 303 and the first cavity 304
It is separated into two separate confined spaces.Sealing in order to ensure the two, it is preferable that at pressurising post
The position contacted with hydraulic fluid chamber 303 on 308 is additionally provided with sealing member 306.
Owing to pressurising post 308 can move back and forth under the drive of hollow piston 302, compare the first embodiment,
When accumulator 400 is carried out pressurising, due to the cross section relatively pressurising post 308 of the end 3021 of hollow piston 302
Sectional area bigger, it is possible to make the hydraulic oil in hydraulic fluid chamber 303 with higher than the pressure quilt in tubular shell 301
It is pressed in the first accumulator 401, it is achieved thereby that preferably pressurized effect.The most in the present embodiment,
Owing to hydraulic fluid chamber 303 and the first cavity 304 are separated into two separate confined spaces, therefore first
In cavity 304 can other liquid outside packing fluid force feed or gas, as long as guaranteeing in increasing fluid passage
During the flow of liquid, hollow piston 302 can be in the promotion of liquid mobile.Preferably, the first cavity 304
In liquid or gas be low pressure liquid or low-pressure gas.
[the 3rd embodiment]
Fig. 5 shows the pressure conversion unit 300 of the present invention " the 3rd embodiment, wherein with the first embodiment party
Formula is identical with the second embodiment or corresponding parts use identical with the first embodiment and the second embodiment
Or corresponding reference.For convenience, the most only describe and the first enforcement and difference of the second embodiment
Point.On the basis of the second embodiment, the difference of the 3rd embodiment is, spring 305 is set in
The outside of pressurising post 308, and pressure conversion device has two hydraulic fluid chambers 303.Increase hydraulic fluid chamber 303
Quantity in a Plenum Process, more hydraulic energy can be supplemented for Storage Unit 400.Meanwhile, at two bullets
Under the effect of spring 305, it is possible to more easily the hydraulic oil in the second accumulator 402 is sucked back into hydraulic fluid chamber
In 303.
In the hydraulic fluid chamber of the downside that figure 5 illustrates, hydraulic fluid chamber has two different parts of internal diameter 3031
With 3032, wherein, the internal diameter of Part I 3031 is more than the internal diameter of Part II 3032.Therefore, pressurising is worked as
When post 308 moves under the drive of hollow piston 302 in hydraulic fluid chamber 303, the side of Part II 3032
Wall can limit the moving range of hydraulic pressure oil column 308, and it is functionally similar to the second stop part in the first embodiment
3072。
[change mode]
Although the pressure conversion unit to the present invention gives three embodiments the most.But, this area
Technical staff in the case of without departing from the operation principle of the present invention, can be designed that various different change is real
Execute mode.
Fig. 6 is the pressure conversion unit 300 of the present invention " ' a kind of change mode, wherein with the first embodiment party
Formula is identical to the 3rd embodiment or corresponding parts use identical to the 3rd embodiment with the first embodiment
Or corresponding reference.For convenience, the most only describe and the difference of the first enforcement to the 3rd embodiment
Point.It will be seen from figure 6 that spring 305 is set in the part in the bar portion 3022 at hollow piston 302
On, and hollow piston 302 and tubular shell 301 cooperatively formed two spaces independent of each other, and i.e. first
Cavity 3041 and the second cavity 3042.Spring 305 moves in the second cavity 305.As it has been described above,
Low pressure liquid or low-pressure gas can be filled with in one cavity 3041 and the second cavity 3042.Further, the first cavity
The sidewall of 3041 defines the second stop part 3072, in order to limit the moving range of hollow piston 302.
In the change mode shown in Fig. 6, the end face 30211 of hollow piston defines truncated cone-shaped leading
To face, thus the downhole tool M of subsequent installation can be provided the effect of positioning and guiding in operation, facilitate well
Lower instrument M passes through the central through hole of hollow piston 302.
By the explanation of detailed description of the invention above, those skilled in the art can be easily implemented with the present invention.This
The accumulator system of invention by controlling the change of the flow period of fluid in pit shaft, and then can control hollow work
Changing of the well hydraulic coupling generating period that plug is subject to so that pressure conversion unit is at fluid pressure and spring force
Synergy under produce back and forth movement, it is achieved utilizing the energy of liquid in pit shaft is the accumulator on downhole tool
Circulation pressurising.Therefore, the present invention can improve the stand-by time of accumulator, reduces the volume of accumulator, and then
The quantity in the minimizing accumulation of energy hole because being fixed to be formed on downhole tool by accumulator, and then reduce downhole tool
The damage that causes of structural strength, and provide basis for researching and developing new downhole tool and new underground work technique.
Although by reference to preferred embodiment, invention has been described, but without departing from the scope of the present invention
In the case of, it can be carried out various improvement and parts therein can be replaced with equivalent.Especially, only
Otherwise there is structural hazard, the every technical characteristic being previously mentioned in each embodiment all can combine in any way
Come.The invention is not limited in specific embodiment disclosed herein, but include falling within the scope of the appended claims
All technical schemes.
Claims (10)
1. an accumulator system, including:
Fluid feeding unit；
Pressure conversion unit, including:
Tubular shell；
Hollow piston, is socketed in described tubular shell, the fluid supplied by described fluid feeding unit
Promotion and move in described tubular shell；And
Hydraulic fluid chamber, is used for storing hydraulic oil；
Storage Unit, including the first accumulator, when described hollow piston is by described fluid forces, described hydraulic oil
The hydraulic oil of intracavity is pressed into described first accumulator；And
Control unit, control is by the flow of the described fluid of described pressure conversion unit.
Accumulator system the most according to claim 1, wherein, described tubular shell has large diameter section
With little internal diameter section；Described hollow piston includes sealing the end that coordinates and little interior with described with described large diameter section
Footpath section seals the bar portion coordinated, the inwall of described large diameter section, described end, the outer wall in described bar portion and institute
State little internal diameter section and surround the first cavity；Described hydraulic fluid chamber is arranged in described little internal diameter section, and with described first
Cavity and Storage Unit connection.
Accumulator system the most according to claim 2, wherein, described pressure conversion unit also includes setting
Being placed in the pressurising post in described first cavity, one end of described pressurising post is fixed on the end of described hollow piston
On, other end sealing shroud is connected in described hydraulic fluid chamber.
Accumulator system the most according to claim 2, wherein, in the described bar portion of described hollow piston
On be arranged with flexible member.
Accumulator system the most according to claim 3, wherein, in the described bar portion of described hollow piston
With or pressurising post on be arranged with flexible member.
6. according to the accumulator system described in claim 4 or 5, wherein, described Storage Unit also include with
The second accumulator that described hydraulic fluid chamber and the first accumulator are connected, the hydraulic oil of described first accumulator release
Flow into described second accumulator.
Accumulator system the most according to claim 6, wherein, described hydraulic fluid chamber stores with described first
It is respectively arranged with check valve between energy device and between described hydraulic fluid chamber and described second accumulator.
Accumulator system the most according to claim 6, wherein, at described first accumulator and described
Logical oil circuit between two accumulators is additionally provided with overflow valve.
9. according to the accumulator system described in any one in claim 1-5, wherein, at described tubular shell
In be provided with the stop part for limiting described hollow piston moving range.
10. according to the accumulator system described in any one in claim 2-5, wherein, described end has
Truncated cone-shaped spigot surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374431.9A CN106321531B (en) | 2015-06-30 | 2015-06-30 | Accumulator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374431.9A CN106321531B (en) | 2015-06-30 | 2015-06-30 | Accumulator system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106321531A true CN106321531A (en) | 2017-01-11 |
| CN106321531B CN106321531B (en) | 2018-02-09 |
Family
ID=57722119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510374431.9A Active CN106321531B (en) | 2015-06-30 | 2015-06-30 | Accumulator system |
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| Country | Link |
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| CN (1) | CN106321531B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424590A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司 | Accumulator and underground survey device including it |
| CN110821901A (en) * | 2019-12-05 | 2020-02-21 | 浙江大学 | Parallel spring type ultrahigh pressure energy accumulator for deep sea hydraulic system |
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|---|---|---|---|---|
| CN2033456U (en) * | 1988-01-02 | 1989-03-01 | 杭震 | Sort of hydraulic generator system |
| CN1063746A (en) * | 1991-01-29 | 1992-08-19 | 西方国际阿特拉斯公司 | Flow through piston accumulator |
| JP2008144815A (en) * | 2006-12-07 | 2008-06-26 | Heishin Engineering & Equipment Co Ltd | Accumulator |
| CN202251156U (en) * | 2011-09-22 | 2012-05-30 | 中国船舶重工集团公司第七〇五研究所高技术公司 | Hydraulic oil tank compensation system applied to underground logging instrument |
| CN103047200A (en) * | 2013-01-22 | 2013-04-17 | 中国石油天然气股份有限公司 | Underground hydraulic energy accumulator |
-
2015
- 2015-06-30 CN CN201510374431.9A patent/CN106321531B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2033456U (en) * | 1988-01-02 | 1989-03-01 | 杭震 | Sort of hydraulic generator system |
| CN1063746A (en) * | 1991-01-29 | 1992-08-19 | 西方国际阿特拉斯公司 | Flow through piston accumulator |
| JP2008144815A (en) * | 2006-12-07 | 2008-06-26 | Heishin Engineering & Equipment Co Ltd | Accumulator |
| CN202251156U (en) * | 2011-09-22 | 2012-05-30 | 中国船舶重工集团公司第七〇五研究所高技术公司 | Hydraulic oil tank compensation system applied to underground logging instrument |
| CN103047200A (en) * | 2013-01-22 | 2013-04-17 | 中国石油天然气股份有限公司 | Underground hydraulic energy accumulator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424590A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司 | Accumulator and underground survey device including it |
| CN110821901A (en) * | 2019-12-05 | 2020-02-21 | 浙江大学 | Parallel spring type ultrahigh pressure energy accumulator for deep sea hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106321531B (en) | 2018-02-09 |
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