CN216241127U - Plunger type memory alloy buoyancy adjusting device - Google Patents
Plunger type memory alloy buoyancy adjusting device Download PDFInfo
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- CN216241127U CN216241127U CN202122870029.3U CN202122870029U CN216241127U CN 216241127 U CN216241127 U CN 216241127U CN 202122870029 U CN202122870029 U CN 202122870029U CN 216241127 U CN216241127 U CN 216241127U
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- memory alloy
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- water inlet
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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Abstract
The utility model discloses a plunger type memory alloy buoyancy adjusting device which comprises a columnar shell, a piston and a memory alloy wire, wherein one end of the columnar shell is a closed end, the other end of the columnar shell is a water inlet end with a water inlet, the piston is in sliding fit with an inner cavity of the columnar shell, and the piston divides the inner cavity of the columnar shell into an air cavity positioned on one side of the closed end and a water cavity positioned on one side of the water inlet end; gas with preset air pressure is injected into the gas cavity; the memory alloy wire is arranged along the central axis of the columnar shell, one end of the memory alloy wire is connected with the closed end, and the other end of the memory alloy wire is connected with the piston. The utility model greatly simplifies the structure of the device, has light weight, can effectively avoid uneven stress and has higher reliability.
Description
Technical Field
The utility model relates to a buoyancy regulating device, in particular to a plunger type memory alloy buoyancy regulating device.
Background
The buoyancy regulating device adopting the memory alloy to deform under heat as the driving force is still in the research and development stage at present, the design scheme is that a memory alloy wire and a spring are combined, the memory alloy wire is heated and shortened, the spring is compressed, a piston moves inwards, the buoyancy is reduced, the memory alloy wire is a two-way memory alloy, the original length is recovered after the temperature is reduced, and the piston moves outwards under the action of the spring, so that the buoyancy is increased. However, the scheme adopts a plurality of memory alloy wires which are uniformly distributed around the circumference of the pressure-resistant shell, and has the defect that the stress of the memory alloy wires is required to be uniform, otherwise, the structure is easy to damage; the structure debugging work has high requirements and is difficult to produce in large scale; the two-way memory characteristics of the memory alloy wires are obtained through training, and it is difficult to ensure that the two-way memory characteristics of each memory alloy wire are completely consistent; in the spring design scheme, the larger the design water depth is for balancing the deep water pressure, the larger the balancing force needs to be provided by the spring, the larger the spring weight is, and the acting force of the spring at the end face is difficult to maintain uniform, so that the structure is damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem of providing a plunger type memory alloy buoyancy adjusting device which has simple structure, small weight, can avoid uneven stress and has higher reliability.
In order to solve the technical problems, the utility model provides a plunger type memory alloy buoyancy regulating device which comprises a columnar shell, a piston and a memory alloy wire, wherein one end of the columnar shell is a closed end, the other end of the columnar shell is a water inlet end with a water inlet, the piston is in sliding fit with an inner cavity of the columnar shell, and the piston divides the inner cavity of the columnar shell into an air cavity positioned on one side of the closed end and a water cavity positioned on one side of the water inlet end; gas with preset air pressure is injected into the gas cavity; the memory alloy wire is arranged along the central axis of the columnar shell, one end of the memory alloy wire is connected with the closed end, and the other end of the memory alloy wire is connected with the piston.
As a preferable scheme of the present invention, both ends of the memory alloy wire respectively penetrate through the closed end and the piston.
As a preferable scheme of the present invention, the cylindrical shell is a cylindrical shell with openings at two ends, one end of the cylindrical shell is provided with a detachable closed end cover, the closed end is formed by the closed end cover, one end of the cylindrical shell is provided with a detachable water inlet end cover, and the water inlet end is formed by the water inlet end cover.
As a preferable scheme of the present invention, the plunger-type memory alloy buoyancy adjusting device further includes a rib plate, the rib plate divides the air cavity into a fixed air cavity located on one side of the closed end and a variable air cavity located on one side of the piston, and the variable air cavity is filled with air of a preset air pressure.
As a preferable scheme of the present invention, a through hole through which the memory alloy wire can pass is provided at a central position of the rib plate, and a seal ring is provided between the through hole and the memory alloy wire.
As a preferable scheme of the present invention, the rib plate is provided with a gas valve for injecting gas into the changing gas chamber.
Compared with the prior art, the plunger type memory alloy buoyancy adjusting device has the following beneficial effects:
the plunger type memory alloy buoyancy adjusting device changes the existing scheme that a plurality of memory alloy wires are uniformly distributed around the circumference of the pressure-resistant shell into the scheme that 1 memory alloy wire is arranged along the central axis of the columnar shell, and simultaneously injects gas with certain pressure intensity into the gas cavity to achieve the purpose of eliminating a spring, thereby greatly simplifying the structure of the device, having light weight, effectively avoiding uneven stress and having higher reliability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic structural diagram of a plunger-type memory alloy buoyancy regulating device provided by the utility model.
The labels in the figure are:
1. the water inlet device comprises a cylindrical shell, 11, a closed end, 12, a water inlet end, 13, a water inlet, 14, an air cavity, 15, a water cavity, 141, a fixed air cavity, 142 and a variable air cavity; 2. a piston; 3. memorizing alloy wires; 4. closing the end cap; 5. a water inlet end cover; 6. a rib plate; 7. a seal ring; 8. and (4) an air valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that the present invention adopts the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. based on the orientations or positional relationships shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the preferred embodiment of the plunger-type memory alloy buoyancy adjusting device provided by the present invention comprises a cylindrical shell 1, a piston 2 and a memory alloy wire 3, wherein one end of the cylindrical shell 1 is a closed end 11, the other end is a water inlet end 12 with a water inlet 13, the piston 2 is in sliding fit with an internal cavity of the cylindrical shell 1, and the piston 2 divides the internal cavity of the cylindrical shell 1 into an air cavity 14 located on one side of the closed end 11 and a water cavity 15 located on one side of the water inlet end 12; gas with preset air pressure is injected into the air cavity 14; the memory alloy wire 3 is arranged along the central axis of the cylindrical shell 1, one end of the memory alloy wire 3 is connected with the closed end 11, and the other end of the memory alloy wire 3 is connected with the piston 2.
Taking the plunger type memory alloy buoyancy regulating device applied to an underwater vehicle as an example, when the underwater vehicle is positioned in the water surface, the temperature rises, the memory alloy wire 3 shortens, the piston 2 is driven to move towards one side of the closed end 11, the volume of the air cavity 14 is reduced, and the buoyancy is reduced; when the underwater vehicle is positioned underwater, the temperature is reduced, the memory alloy wire 3 is loosened, the piston 2 moves towards one side of the water inlet end 12 under the action of the air pressure of the air cavity 14, the volume of the air cavity 14 is increased, and the buoyancy is increased. Therefore, according to the plunger type memory alloy buoyancy adjusting device provided by the embodiment of the utility model, the scheme that the existing plurality of memory alloy wires 3 are uniformly distributed around the circumference of the pressure-resistant shell is changed into the scheme that the 1 memory alloy wire 3 is arranged along the central axis of the columnar shell 1, and meanwhile, the purpose of eliminating a spring is achieved by injecting gas with certain pressure into the air cavity 14, so that the structure of the device is greatly simplified, the weight is small, the uneven stress can be effectively avoided, and the reliability is higher.
Illustratively, both ends of the memory alloy wire 3 respectively pass through the closed end 11 and the piston 2. Due to the design, the memory alloy wire 3 can be in contact with the outside, and the outside temperature can be better sensed.
Exemplarily, for convenient assembly and maintenance, the cylindrical shell 1 is a cylindrical shell with two open ends, one end of the cylindrical shell 1 is provided with a detachable end closure 4, the closed end 11 is formed by the end closure 4, one end of the cylindrical shell 1 is provided with a detachable water inlet end cap 5, and the water inlet end 12 is formed by the water inlet end cap 5.
Illustratively, the plunger type memory alloy buoyancy regulating device further comprises a rib 6, wherein the rib 6 divides the air cavity 14 into a fixed air cavity 141 on one side of the closed end 11 and a variable air cavity 142 on one side of the piston 2, and the variable air cavity 142 is filled with air with preset air pressure. Thus, the basic buoyancy of the device is satisfied by the fixed air chamber 141, and the buoyancy is adjusted by the variable air chamber 142.
Illustratively, a through hole for the memory alloy wire 3 to pass through is formed in the center of the rib plate 6, and a sealing ring 7 is arranged between the through hole and the memory alloy wire 3 to prevent the pressure gas in the change air chamber 142 from leaking.
Illustratively, the rib 6 is provided with a gas valve 8 for injecting gas into the changing gas chamber 142.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the utility model is not limited by the scope of the appended claims.
Claims (6)
1. The plunger type memory alloy buoyancy adjusting device is characterized by comprising a columnar shell, a piston and a memory alloy wire, wherein one end of the columnar shell is a closed end, the other end of the columnar shell is a water inlet end with a water inlet, the piston is in sliding fit with an inner cavity of the columnar shell, and the piston divides the inner cavity of the columnar shell into an air cavity positioned on one side of the closed end and a water cavity positioned on one side of the water inlet end; gas with preset air pressure is injected into the gas cavity; the memory alloy wire is arranged along the central axis of the columnar shell, one end of the memory alloy wire is connected with the closed end, and the other end of the memory alloy wire is connected with the piston.
2. The plunger-type memory alloy buoyancy regulating device of claim 1, wherein both ends of the memory alloy wire pass through the closed end and the piston, respectively.
3. The plunger-type memory alloy buoyancy regulating device as defined in claim 1, wherein the cylindrical shell is a cylindrical shell with two open ends, one end of the cylindrical shell is provided with a detachable closed end cap, the closed end is formed by the closed end cap, one end of the cylindrical shell is provided with a detachable water inlet end cap, and the water inlet end is formed by the water inlet end cap.
4. The plunger-type memory alloy buoyancy regulating device of claim 1, further comprising a rib plate dividing the air chamber into a fixed air chamber located at one side of the closed end and a variable air chamber located at one side of the piston, the variable air chamber being filled with a gas of a predetermined pressure.
5. The plunger type memory alloy buoyancy regulating device as claimed in claim 4, wherein a through hole for the memory alloy wire to pass through is formed in the center of the rib plate, and a sealing ring is arranged between the through hole and the memory alloy wire.
6. The plunger type memory alloy buoyancy regulating device as claimed in claim 4, wherein the rib plate is provided with a gas valve for injecting gas into the changing gas chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122870029.3U CN216241127U (en) | 2021-11-19 | 2021-11-19 | Plunger type memory alloy buoyancy adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122870029.3U CN216241127U (en) | 2021-11-19 | 2021-11-19 | Plunger type memory alloy buoyancy adjusting device |
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| CN216241127U true CN216241127U (en) | 2022-04-08 |
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| CN202122870029.3U Active CN216241127U (en) | 2021-11-19 | 2021-11-19 | Plunger type memory alloy buoyancy adjusting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116278557A (en) * | 2023-03-31 | 2023-06-23 | 浙江大学 | Amphibious robot and control method |
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2021
- 2021-11-19 CN CN202122870029.3U patent/CN216241127U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116278557A (en) * | 2023-03-31 | 2023-06-23 | 浙江大学 | Amphibious robot and control method |
| CN116278557B (en) * | 2023-03-31 | 2023-09-01 | 浙江大学 | Amphibious robot and control method |
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