CN108895066A - Transmission fluid energy storage equipment and its application method based on negative poisson's ratio structure - Google Patents
Transmission fluid energy storage equipment and its application method based on negative poisson's ratio structure Download PDFInfo
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- CN108895066A CN108895066A CN201810724718.3A CN201810724718A CN108895066A CN 108895066 A CN108895066 A CN 108895066A CN 201810724718 A CN201810724718 A CN 201810724718A CN 108895066 A CN108895066 A CN 108895066A
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- ratio
- poisson
- negative poisson
- zero
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of transmission fluid energy storage equipments based on negative poisson's ratio structure, including shell, the inside of shell is separately filled with negative poisson's ratio material and zero Poisson ratio, the oil inlet for connecting hydraulic circuit is provided at the top of shell, the bottom side of shell is provided with overflow port, the valve port that the inside of shell is formed between negative poisson's ratio material and zero Poisson ratio respectively for realizing opening and closing.Accumulation of energy structure of the present invention is single structure body, and there is no the relative motion between part, not only structure is simple, high reliablity, and has better response characteristic, has biggish advantage and preferable application prospect compared to current conventional method.
Description
Technical field
The invention belongs to pressure jumps in transmission fluid to carry out accumulation of energy, defense of resistance to impact technical field, and in particular to
A kind of transmission fluid energy storage equipment and its application method based on negative poisson's ratio structure.
Background technique
Compression shock is a kind of common phenomenon of transmission fluid (such as hydraulic system or baric systerm), is mainly showed
For the change dramatically of Fluid pressure in drive circuit, occurs the pressure spike for being much higher than service pressure in a very short period of time
Value.Stability and functional reliability to transmission fluid have serious harm.There are mainly two types of its main causes, the first
It is that transmission fluid working condition in the process of running changes suddenly, such as emergency stop, deflecting, skidding, will lead to biography
Acute variation also occurs for dynamic internal system fluid motion state, and fluid is squeezed at this time, and kinetic energy is converted to pressure energy, is caused
Fluid pressure sharply increases；Second is the load generation change dramatically in equipment, also results in Fluid pressure and increases rapidly, shape
At pressure surge, and propagated in pipeline rapidly.
The measure of reduction hydraulic shock harm most common and most mature at present is to reduce liquid using accumulator and safety valve
Pressure impact.Accumulator can absorb the compression shock in hydraulic system, effectively reduce the peak value of surge.Safety valve can be
Say that section hydraulic oil spill flows back to fuel tank when pressure is excessive, to avoid hydraulic excessive generate to hydraulic device and destroy and make
With.Most common bladder accumulator completes what energy was converted and stored by compressed gas, and the state of compressed air is by temperature
It is affected, air bag has leakage and hidden peril of explosion, needs often to detect and safeguard.And safety valve action needs the response time,
Sometimes it is unable to satisfy the requirement unloaded to High Loading Rate.Even if the related measure for reducing shock loading is taken, but
In actual use, the failures such as leakage, failure, cylinder body explosion occur due to compression shock still to happen occasionally.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of based on negative pool
Pine than structure transmission fluid energy storage equipment and its application method, for reducing compression shock to fluid transmission device not
Good influence improves equipment operational reliability.
The present invention uses following technical scheme：
The present invention is based on the transmission fluid energy storage equipment of negative poisson's ratio structure, including shell, the inside of shell is distinguished
Filled with negative poisson's ratio material and zero Poisson ratio, the oil inlet for connecting hydraulic circuit is provided at the top of shell, outside
The bottom side of shell is provided with overflow port, and the inside of shell forms between negative poisson's ratio material and zero Poisson ratio use respectively
In the valve port for realizing opening and closing.
Specifically, interior of shell is made of upper cavity and lower chamber, zero Poisson ratio is arranged in lower chamber, with shell
Bottom connection, negative poisson's ratio material is arranged in the upper cavity at the top of zero Poisson ratio.
Specifically, shell is radially inside provided with ring-shaped step outstanding, ring-shaped step is close with zero Poisson ratio
Contact forms valve port, and valve port is normally off.
Further, shell is metal compression-resistant structure.
Further, the elasticity modulus of negative poisson's ratio material is less than the elasticity modulus of zero Poisson ratio.
Further, it when zero Poisson ratio axially loaded, does not change in radial dimension.
A kind of application method of the transmission fluid energy storage equipment based on negative poisson's ratio structure, is rushed according to inlet pressure
Flexible deformation occurs for the size variation hit, negative poisson's ratio material and zero Poisson ratio interconnected, and valve port is made to be in closure
Or opening state, realize normal work or overflow unloading.
Specifically, negative poisson's ratio material is inhaled by flexible deformation when the compression shock of oil inlet is unsatisfactory for opening valve port
Pressure energy is received, the zero Poisson ratio of bottom is connected with negative poisson's ratio material occurs flexible deformation, participates in absorption pressure energy
In the process, the modular ratio negative poisson's ratio material of zero Poisson ratio is big, and deflection is smaller, and zero Poisson ratio at the top of by
Lateral dimension does not change when pressure, and the valve port of zero Poisson ratio and ring-shaped step composition is in closed state.
Specifically, when the compression shock of oil inlet meets and opens valve port, zero Poisson's ratio of negative poisson's ratio material and bottom
Simultaneously downward flexible deformation occurs for material, and the zero Poisson ratio of bottom moves down, the ring being radially inside arranged with shell
Shape step disengages, and ring-shaped step and negative poisson's ratio material form valve port, and radial dimension reduces after negative poisson's ratio material is pressurized,
Valve port is opened, and hydraulic oil enters lower chamber by valve port, and flows back to fuel tank from overflow port, to realize that overflow unloads.
Compared with prior art, the present invention at least has the advantages that：
A kind of transmission fluid energy storage equipment based on negative poisson's ratio structure of the present invention, is filled respectively in the inside of shell
There are negative poisson's ratio material and zero Poisson ratio, hydraulic circuit is connected by the oil inlet that top is arranged, overflow port is arranged in bottom
For being discharged, the opening and closing of valve port is realized by the flexible deformation of negative poisson's ratio material and zero Poisson ratio, in pressure oscillation,
Fluid pressure energy can be absorbed by flexible deformation, if surge reaches critical point, negative poisson's ratio structural body is due to elasticity
Deformation can open overflow ducts, carry out overflow unloading, and a device can have two kinds of functions.
Further, the characteristic of radial contraction deformation can be generated when by axial force based on negative poisson's ratio material, and
Thus characteristic and the excellent impact resistance that has.
Further, the opening and closing that valve port is realized by negative poisson's ratio flexible deformation at valve port does not need other any machines
Tool structure and cooperation, simplify structure, improve the reliability and response speed of on-off action.
Further, by the cooperation between negative poisson's ratio material and zero Poisson ratio, can not only be become by elasticity
The mode Absorbing hydraulic pulsation of shape, and can realize that overflow unloads in the biggish situation of compression shock.Pass through a kind of structure
Two kinds of functions are realized, good protective action can act as to different degrees of compression shock.
The invention also discloses a kind of application method based on negative poisson's ratio structural fluid transmission system energy storage equipment, according to
The size variation of inlet pressure impact, negative poisson's ratio material and zero Poisson ratio interconnected occur flexible deformation, make
Valve port is in the state that closes or opens, and realizes normal work or overflow unloading, entire method is easy to operate, intuitive display.
In conclusion accumulation of energy structure of the present invention is single structure body, there is no the relative motion between part, not only structure
Simply, high reliablity, and there is better response characteristic, have biggish advantage compared to current conventional method and preferably answer
Use prospect.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is negative poisson's ratio malformation feature figure, wherein (a) is pressured state, (b) is tension state；
Fig. 2 is the structure chart of negative poisson's ratio material of the present invention, wherein (a) is unit cell, is (b) two knots of unit cell composition
Structure；
Fig. 3 is the deformation tendency figure after negative poisson's ratio material of the present invention compression, wherein (a) is positive Poisson ratio material, (b)
It is (c) enlarged diagram of figure (b) for negative poisson's ratio material；
Fig. 4 is zero Poisson's ratio malformation feature figure, wherein (a) is pressured state, (b) is tension state；
Fig. 5 is shock resistance accumulator working principle diagram of the present invention；
Fig. 6 is shock resistance of the present invention and overflow unloading principles figure, wherein (a) is to pass through flexible deformation Absorbing hydraulic pulsation；
(b) be hypertonia when valve port A open carry out overflow.
Wherein：1. shell；2. negative poisson's ratio material；3. zero Poisson ratio；4. oil inlet；5. valve port；6. overflow port；7.
Ring-shaped step.
Specific embodiment
In the description of the present invention, it is to be understood that, term " on ", "lower", "top", "bottom", "inner", "outside", " one
The orientation or positional relationship of the instructions such as side ", " one end ", " one side " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " setting ", " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Referring to Fig. 5, the present invention provides a kind of transmission fluid energy storage equipments based on negative poisson's ratio structure, including
Shell 1, negative poisson's ratio material 2 and zero Poisson ratio 3, negative poisson's ratio material 2 and zero Poisson ratio 3 are filled in shell 1
Inside, the top of shell 1 are provided with the oil inlet 4 for connecting hydraulic circuit, and the bottom side of shell 1 is provided with overflow port 6.
Shell 1 is radially inside provided with ring-shaped step 7 outstanding, and ring-shaped step 7 and the structure of zero Poisson ratio 3 are tight
Contiguity touching forms valve port 5, and valve port 5 is normally off under normal circumstances.
Shell 1 is metal compression-resistant structure, and the lower part of shell 1 is that (top is pressurized or tension, lateral ruler for zero Poisson ratio 3
It is very little to change) it is connect with the bottom of shell 1, the top of zero Poisson ratio 3 is connected with 2 (top of negative poisson's ratio material
It is pressurized or tension, lateral dimensions can be shunk), negative poisson's ratio material is made by the optimization design to cell element and overall structure and selection
2 elasticity modulus is less than the elasticity modulus of zero Poisson ratio 3.
When being a kind of be uniaxially stretched lateral expansion can occur for negative poisson's ratio material, and by uniaxial compression when can occur
The material or structure laterally shunk, working mechanism are as shown in Figure 1.By the design of micro-structure in material (also referred to as unit cell), when
Micro-structure is along the direction contraction perpendicular to active force when applying squeezing action power along some direction, and works as along some
Micro-structure is along the direction expansion perpendicular to active force when direction applies drawing force, so that auxetic effect is realized, such as Fig. 2 institute
Show.
Since negative poisson's ratio material is when being squeezed and impacting, material can be shunk to the position for being squeezed or impacting,
To make more materials participate in energy absorption process.Therefore, negative poisson's ratio material has excellent impact resistance such as
Shown in Fig. 3.
Zero Poisson ratio is a kind of new material that developed on the basis of negative poisson's ratio, and feature is axially loaded
When, it does not change in radial dimension, as shown in Figure 4 (since the proposition and development of zero Poisson's ratio material are all to negative Poisson
Than the research of material, and its design and analysis method and negative poisson's ratio material are essentially identical, and for the sake of simplicity, the present invention is moored zero
Pine is also considered as a kind of special negative poisson's ratio material than material).
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being described and shown in usually here in attached drawing is real
The component for applying example can be arranged and be designed by a variety of different configurations.Therefore, below to the present invention provided in the accompanying drawings
The detailed description of embodiment be not intended to limit the range of claimed invention, but be merely representative of of the invention selected
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 6, a kind of application method based on negative poisson's ratio structural fluid transmission system energy storage equipment of the present invention, tool
Body is as follows：
When the compression shock of oil inlet 4 is unsatisfactory for opening valve port 5, negative poisson's ratio material 2 is absorbed by flexible deformation is pressed
Power energy, the zero Poisson ratio 3 of bottom is with negative poisson's ratio material 2 due to being connected at this time, flexible deformation can also occur, join
With to during absorption pressure energy, since the modular ratio negative poisson's ratio material 2 of zero Poisson ratio 3 is big, deflection compared with
It is small, and lateral dimension does not change when compression at the top of zero Poisson ratio 3, zero Poisson ratio 3 is formed with ring-shaped step 7
Valve port 5 is in closed state, as shown in Fig. 6 (a).
When the compression shock of oil inlet 4, which meets, opens valve port 5, the zero Poisson ratio 3 of negative poisson's ratio material 2 and bottom
Downward flexible deformation occurs simultaneously, since the zero Poisson ratio 3 of bottom moves down, is disengaged with ring-shaped step 7；This
When, ring-shaped step 7 and negative poisson's ratio material 2 form valve port 5, and radial dimension reduces after being pressurized due to negative poisson's ratio material 2, valve port
5 open, and hydraulic oil enters lower chamber by valve port 5, and flows back to fuel tank from overflow port 6, to realize that overflow unloads, such as Fig. 6 (b)
It is shown.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (9)
1. the transmission fluid energy storage equipment based on negative poisson's ratio structure, which is characterized in that including shell (1), shell (1)
Inside is separately filled with negative poisson's ratio material (2) and zero Poisson ratio (3), and shell is provided at the top of (1) for connecting liquid
The oil inlet (4) on road is pushed back, the bottom side of shell (1) is provided with overflow port (6), the inside of shell (1) and negative poisson's ratio material
Valve port (5) are provided between material (2) and zero Poisson ratio (3).
2. a kind of transmission fluid energy storage equipment based on negative poisson's ratio structure according to claim 1, feature exist
In shell (1) is internal to be made of upper cavity and lower chamber, and zero Poisson ratio (3) is arranged in lower chamber, with shell (1)
Bottom connection, negative poisson's ratio material (2) are arranged in the upper cavity at the top of zero Poisson ratio (3).
3. a kind of transmission fluid energy storage equipment based on negative poisson's ratio structure according to claim 1, feature exist
In shell (1) is radially inside provided with ring-shaped step outstanding (7), and ring-shaped step (7) and zero Poisson ratio (3) are close
Contact is formed valve port (5), and valve port (5) is normally off.
4. a kind of transmission fluid accumulation of energy dress based on negative poisson's ratio structure according to any one of claim 1 to 3
It sets, which is characterized in that shell (1) is metal compression-resistant structure.
5. a kind of transmission fluid accumulation of energy dress based on negative poisson's ratio structure according to any one of claim 1 to 3
It sets, which is characterized in that the elasticity modulus of negative poisson's ratio material (2) is less than the elasticity modulus of zero Poisson ratio (3).
6. a kind of transmission fluid energy storage equipment based on negative poisson's ratio structure according to claim 5, feature exist
When, zero Poisson ratio (3) axially loaded, do not change in radial dimension.
7. a kind of application method of energy storage equipment described in any one of claims 1 to 6, which is characterized in that according to oil inlet (4)
Flexible deformation occurs for the size variation of compression shock, negative poisson's ratio material (2) interconnected and zero Poisson ratio (3), makes
Valve port (5) is in the state that closes or opens, and realizes normal work or overflow unloading.
8. a kind of application method based on negative poisson's ratio structural fluid transmission system energy storage equipment according to claim 7,
It is characterized in that, negative poisson's ratio material (2) is become by elasticity when the compression shock of oil inlet (4) is unsatisfactory for opening valve port (5)
Shape absorption pressure energy, the zero Poisson ratio (3) of bottom is connected with negative poisson's ratio material (2) occurs flexible deformation, participates in suction
During receiving pressure energy, greatly, deflection is small for the modular ratio negative poisson's ratio material (2) of zero Poisson ratio (3), and zero pool
Lateral dimension does not change when pine at the top of material (3) than being pressurized, the valve of zero Poisson ratio (3) and ring-shaped step (7) composition
Mouth (5) is in closed state.
9. a kind of application method based on negative poisson's ratio structural fluid transmission system energy storage equipment according to claim 7,
It is characterized in that, when the compression shock of oil inlet (4) meets and opens valve port (5), zero pool of negative poisson's ratio material (2) and bottom
Simultaneously downward flexible deformation occurs for pine than material (3), and the zero Poisson ratio (3) of bottom moves down, with shell (1) inside
The ring-shaped step (7) being arranged radially disengages, ring-shaped step (7) and negative poisson's ratio material (2) composition valve port (5), negative Poisson
Radial dimension reduces after being pressurized than material (2), and valve port (5) is opened, and hydraulic oil enters lower chamber by valve port (5), and from overflow
Mouth (6) flows back to fuel tank, to realize that overflow unloads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810724718.3A CN108895066B (en) | 2018-07-04 | 2018-07-04 | Transmission fluid energy storage equipment and its application method based on negative poisson's ratio structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810724718.3A CN108895066B (en) | 2018-07-04 | 2018-07-04 | Transmission fluid energy storage equipment and its application method based on negative poisson's ratio structure |
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| CN108895066A true CN108895066A (en) | 2018-11-27 |
| CN108895066B CN108895066B (en) | 2019-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113722834A (en) * | 2021-09-13 | 2021-11-30 | 上海交通大学 | Deep-sea light high-submergence-depth zero-Poisson-ratio metamaterial pressure-resistant shell and design method |
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| US2895507A (en) * | 1955-08-24 | 1959-07-21 | Chamberlain Corp | Pressure accumulator |
| DE3333597A1 (en) * | 1983-09-16 | 1985-04-18 | Wilkhahn Wilkening + Hahne GmbH + Co, 3252 Bad Münder | Accumulator |
| CN102177349A (en) * | 2008-10-09 | 2011-09-07 | 亚历山大·阿纳托利耶维奇·斯特罗加诺夫 | Hydropneumatic accumulator with a compressible regenerator |
| CN102197229A (en) * | 2008-09-01 | 2011-09-21 | 亚历山大·阿纳托利耶维奇·斯特罗加诺夫 | Hydropneumatic accumulator with flexible porous filler |
| CN104204545A (en) * | 2012-03-20 | 2014-12-10 | 罗伯特·博世有限公司 | Strain energy accumulator |
| CN104514758A (en) * | 2013-09-27 | 2015-04-15 | 陈启星 | Liquid seal energy accumulator based on liquid collector and sandwich piston and hydraulic system thereof |
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2018
- 2018-07-04 CN CN201810724718.3A patent/CN108895066B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2895507A (en) * | 1955-08-24 | 1959-07-21 | Chamberlain Corp | Pressure accumulator |
| DE3333597A1 (en) * | 1983-09-16 | 1985-04-18 | Wilkhahn Wilkening + Hahne GmbH + Co, 3252 Bad Münder | Accumulator |
| CN102197229A (en) * | 2008-09-01 | 2011-09-21 | 亚历山大·阿纳托利耶维奇·斯特罗加诺夫 | Hydropneumatic accumulator with flexible porous filler |
| CN102177349A (en) * | 2008-10-09 | 2011-09-07 | 亚历山大·阿纳托利耶维奇·斯特罗加诺夫 | Hydropneumatic accumulator with a compressible regenerator |
| CN104204545A (en) * | 2012-03-20 | 2014-12-10 | 罗伯特·博世有限公司 | Strain energy accumulator |
| CN104514758A (en) * | 2013-09-27 | 2015-04-15 | 陈启星 | Liquid seal energy accumulator based on liquid collector and sandwich piston and hydraulic system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113722834A (en) * | 2021-09-13 | 2021-11-30 | 上海交通大学 | Deep-sea light high-submergence-depth zero-Poisson-ratio metamaterial pressure-resistant shell and design method |
| CN113722834B (en) * | 2021-09-13 | 2023-10-13 | 上海交通大学 | Deep sea light large-diving zero poisson ratio metamaterial pressure-resistant shell and design method |
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