Microgravity pressure accumulation type normal-temperature storage tank
By designing a microgravity pressure-acided storage box and using a working fluid bag with its own pressurization chamber, the problem of lack of self-uppression function of the bag storage box in the prior art is solved, and a small capacity in a microgravity environment is achieved The effective storage and transportation of self-suppressed liquid working fluid simplifies the system structure and improves reliability.
Patent Information
- Application Number
- CN202411795537.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-02-11
AI Technical Summary
The capsule storage tanks used for liquid working fluid storage in existing spacecraft lack self-pressure function and require an additional boosting system, which leads to complex system and large weight, making it difficult to meet the miniaturization, lightweight and high-quality deep space exploration tasks. Reliability requirements.
A microgravity pressure-acided room temperature storage box is designed, using a working fluid bag with its own pressurized chamber. By unlocking the working fluid outflow valve, the working fluid can be stable, without the need for an additional pressurized gas cylinder.
It realizes effective storage and transportation of small-capacity self-pressurized liquid working fluid in microgravity and low gravity environments, simplifies the system structure, reduces weight, and improves reliability.
Smart Images
Figure CN119408741A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of aerospace vehicle tanks, and in particular relates to a microgravity pressure storage type normal temperature tank. Background Art
[0002] With the development of aerospace technology, tiny spacecraft and deep space exploration missions have developed rapidly, and the demand for the storage and supply of small and medium-capacity liquid working fluids has also increased significantly.
[0003] At present, the storage of liquid working fluids on spacecraft mostly adopts bladder-type tanks without self-pressurization function. The bladder-type tank needs to be equipped with a pressurization system. The working fluid in the bladder tank can only be discharged after the pressurization system is started. At the same time, the storage system and pressurization system of the bladder-type tank have independent structures respectively. The system is complex and heavy, which is difficult to meet the requirements of miniaturization, lightweight and high reliability of deep space exploration missions. Summary of the invention
[0004] The purpose of the present invention is to provide a microgravity pressure-accumulating normal temperature storage tank, which meets the demand for the use of a small-capacity self-pressurizing liquid working medium storage tank in a microgravity environment. The storage tank has its own pressurization chamber and does not require a separate pressurization gas cylinder. The stable delivery of the working medium can be completed by simply unlocking the working medium outflow valve. The storage tank can be used under different working conditions such as microgravity and low gravity.
[0005] In order to achieve the purpose of the present invention, the technical solution adopted is: a microgravity pressure storage type normal temperature storage tank, including a tank body and a working fluid bag, the working fluid bag is installed in the tank body, the tank body is provided with a working fluid pipe connected to the interior of the working fluid bag, and the tank body is also provided with a booster pipe connected to its interior.
[0006] Furthermore, a support cover is provided in the box body, which divides the box body into a bladder installation cavity and a pressure cavity, and the working fluid bladder is located in the bladder installation cavity, and the booster pipe is connected to the pressure cavity.
[0007] Furthermore, a diffusion tube connected to the working fluid tube is fixed on the box body, the diffusion tube extends into the working fluid bag, and a plurality of through holes are opened on the diffusion tube.
[0008] Furthermore, the extended end of the diffusion pipe is pressed against the support cover.
[0009] Furthermore, the support cover has a cap-shaped structure protruding into the pressure chamber, and the extended end of the diffuser pipe is tightly pressed against the cap-shaped structure.
[0010] Furthermore, the extended end of the diffusion tube also has a convex cap, and the convex cap is tightly pressed in the cap-shaped structure.
[0011] Furthermore, the central axis of the diffuser tube is in the same straight line as the central axis of the box.
[0012] Furthermore, a charging and discharging valve is installed on the working fluid pipe, and a boost regulating valve is installed on the boost pipe.
[0013] Furthermore, the box body is provided with a mounting opening, and the opening of the working fluid bag is fixed to the edge of the mounting opening.
[0014] Furthermore, the installation opening of the box body has a flange, the working fluid pipe is sealed and fixed with a clamping ring, and the opening edge of the working fluid bag is clamped on the flange through the clamping ring.
[0015] Furthermore, a sealing ring is provided between the clamping ring and the opening of the working fluid bag, and between the flange and the opening of the working fluid bag.
[0016] The beneficial effects of the present invention are:
[0017] The present invention integrates the functions of the working fluid storage and pressurization systems in the same pressure vessel, adopts a self-stabilizing working fluid flexible seal for pressurization, improves the stability of the entire tank to adapt to harsh mechanical environments, and adopts a reasonable structural design to reduce the weight of the tank structure and improve system reliability.
[0018] The present invention can work without the need for an additional pressurization system when in use, has stable delivery, meets the use requirements of a small-capacity self-pressurizing liquid working fluid storage tank in a microgravity environment, and can be used under different working conditions such as microgravity and low gravity. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings illustrate exemplary embodiments of the present invention and together with the description serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.
[0020] Figure 1 It is a structural schematic diagram of the microgravity pressure storage type normal temperature storage tank provided by the present invention.
[0021] Markings and corresponding parts names in the attached drawings:
[0022] 1. Booster pipe; 2. Booster regulating valve; 3. Pressure chamber; 4. Convex cap; 5. Box body; 6. Support cover; 7. Working fluid bladder; 8. Diffuser; 9. Sealing ring; 10. Flange; 11. Clamping ring; 12. Filling and discharging valve; 13. Working fluid pipe; 14. Bladder installation cavity; 15. Through hole; 16. Cap-shaped structure. DETAILED DESCRIPTION
[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific implementation methods described herein are only used to explain the relevant content, rather than to limit the present invention. It is also necessary to explain that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings.
[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0025] like Figure 1 As shown, the present invention provides a microgravity pressure storage type normal temperature storage tank, including a box body 5 and a working fluid bag 7. The volume of the box body 5 is fixed, the working fluid bag 7 is an elastic and telescopic bag, and the working fluid bag 7 is installed in the box body 5. The inside of the working fluid bag 7 and the inside of the box body 5 are two independent chambers, and the two are not connected. When the working fluid bag 7 swells, the effective space in the box body 5 decreases; when the working fluid bag 7 shrinks, the effective space in the box body 5 increases. It should be noted that the effective space here refers to the space in the box body 5 that can accommodate the medium.
[0026] The box body 5 is also provided with a working fluid pipe 13 and a boost pipe 1, and the working fluid pipe 13 is connected to the inside of the working fluid bag 7; the working fluid can be transported to the working fluid bag 7 through the working fluid pipe 13, or the working fluid in the working fluid bag 7 can be sent out through the working fluid pipe 13; the pressurized medium can be sent into the box body 5 through the boost pipe 1, or the pressurized medium can be sent out of the box body 5 through the boost pipe 1.
[0027] Since the interior of the box 5 is not connected to the interior of the working medium bag 7, the pressurized medium entering the box 5 and the working medium entering the working medium bag 7 will not be mixed, and the pressures of the pressurized medium and the working medium are balanced when they are filled.
[0028] When the working fluid stored in the working fluid bag 7 needs to be delivered, the working fluid pipe 13 is opened and the boosting pipe 1 is closed. Since the inside of the working fluid bag 7 is connected to the outside through the working fluid pipe 13, the pressure in the working fluid bag 7 is reduced. According to the principle of pressure difference, the pressure of the pressurized medium in the box 5 acts on the working fluid bag 7, so that the working fluid in the working fluid bag 7 is discharged through the working fluid pipe 13. Since the boosting pipe 1 is closed, the working fluid bag 7 is not connected to the box 5. Therefore, when the working fluid in the working fluid bag 7 is delivered through the working fluid pipe 13, the pressurized medium in the box 5 will not leak.
[0029] In the present invention, in order to prevent the working fluid bag 7 from rupturing due to excessive bulging, a support cover 6 is further provided in the box body 5. The support cover 6 is a mesh cover structure. The support cover 6 divides the inside of the box body 5 into a bag installation cavity 14 and a pressure cavity 3. The working fluid bag 7 is located in the bag installation cavity 14. The booster pipe 1 is connected to the pressure cavity 3. When the pressurized medium enters the pressure cavity 3, it can enter the bag installation cavity 14 through the support cover 6, so that the pressurized medium can act on the working fluid bag 7. At the same time, the support cover 6 is spherical, and the support cover 6 bulges into the pressure cavity 3, so that when the working fluid bag 7 bulges, the shape of the support cover 6 is more consistent with the bulging state of the working fluid bag 7, so that the working fluid bag 7 can bulge more evenly, ensuring the service life of the working fluid bag 7. By providing the support cover 6, it is also possible to prevent the working fluid bag 7 from shaking in the box body 5 during the transportation of the storage tank after the working fluid is filled in the working fluid bag 7, thereby preventing the working fluid bag 7 filled with working fluid from rupturing during the transportation of the storage tank.
[0030] In the present invention, a diffuser 8 is also fixed on the housing 5, the central axis of the diffuser 8 is in the same straight line as the central axis of the housing 5, the inner end of the diffuser 8 extends into the working fluid bag 7, the outer end of the diffuser 8 is connected to the working fluid pipe 13, and a plurality of through holes 15 connected to the interior of the diffuser 8 are also provided to avoid the discharge of the working fluid in the working fluid bag 7 being affected by the blockage of one of the through holes 15 due to the contraction of the working fluid bag 7, so that the medium in the working fluid bag 7 can be discharged as completely as possible.
[0031] In the present invention, the plurality of through holes 15 on the diffuser 8 can be arranged evenly or randomly. Under the condition that the working medium in the working medium bag 7 can be completely discharged, the plurality of through holes 15 on the diffuser 8 can be adjusted at will.
[0032] In order to make the expansion and contraction of the working fluid bag 7 more uniform, the extended end of the diffuser 8 can be pressed against the support cover 6, so that the end of the working fluid bag 7 away from the working fluid tube 13 is fixed. On the one hand, it further prevents the working fluid bag 7 from shaking in the box body 5 during transportation of the storage tank after the working fluid is filled in the working fluid bag 7. On the other hand, it makes the working fluid bag 7 more uniform during the process of shrinking and expanding.
[0033] In order to make the diffuser 8 more stable in the working fluid bag 7, the center of the support cover 6 also has a cap-like structure 16 protruding into the pressure chamber 3, that is, the support cover 6 has a groove structure on one side of the bag installation cavity 14. When the diffuser 8 is installed, the extended end of the diffuser 8 can be supported in the cap-like structure 16, thereby fixing the extended end of the diffuser 8 and making the installation of the extended end of the diffuser 8 more convenient.
[0034] In order to prevent the extended end of the diffuser 8 from pressing against the cap-shaped structure 16 and causing damage to the working fluid bag 7, the extended end of the diffuser 8 is also provided with a convex cap 4, the shape of which is the same as that of the cap-shaped structure 16. When the diffuser 8 is installed, the convex cap 4 on the diffuser 8 is inserted into the cap-shaped structure 16, thereby fixing the end of the working fluid bag 7 away from the working fluid pipe 13. Through the cooperation of the convex cap 4 and the cap-shaped structure 16, the end of the working fluid bag 7 away from the working fluid pipe 13 is pressed between the convex cap 4 and the cap-shaped structure 16, preventing the end of the working fluid bag 7 away from the working fluid pipe 13 from being punctured when being pressed between the convex cap 4 and the cap-shaped structure 16, so that the service life of the working fluid bag 7 is guaranteed. In the present invention, the cap-shaped structure 16 and the convex cap 4 are conical, and the cap-shaped structure 16 and the convex cap 4 can also be spherical while ensuring the service life of the working fluid bag 7.
[0035] In order to conveniently control the opening and closing of the working fluid pipe 13 and the boosting pipe 1 , a charging and discharging valve 12 is installed on the working fluid pipe 13 , and a boosting regulating valve 2 is installed on the boosting pipe 1 .
[0036] In the present invention, in order to facilitate the installation of the working fluid bag 7, a mounting port is provided on the box body 5, a flange 10 is welded at the mounting port, a working fluid pipe 13 is welded and fixed on the flange 10, and the opening of the working fluid bag 7 is folded on the flange 10, and then a clamping ring 11 is used to press the folded opening of the working fluid bag 7 onto the flange 10, so that the opening of the working fluid bag 7 is sealed and pressed against the mounting port on the box body 5, which can not only meet the installation of the working fluid bag 7, but also realize the closure of the mounting port, thereby preventing the pressurized medium entering the box body 5 from leaking from the mounting port.
[0037] In order to prevent leakage between the clamping ring 11 and the opening of the mass bladder, and between the flange 10 and the opening of the mass bladder, sealing rings 9 are provided between the clamping ring 11 and the opening of the mass bladder, and between the flange 10 and the opening of the mass bladder.
[0038] When the present invention is in use, the filling and discharging valve 12 is opened, and the working fluid is delivered into the working fluid bag 7 through the working fluid pipe 13. When the working fluid bag 7 swells and completely fills the bag installation cavity 14, the delivery of the working fluid is stopped, and the filling and discharging valve 12 on the working fluid pipe 13 is closed; the pressurized medium is delivered into the box body 5 through the boosting pipe 1, and it is ensured that the pressurized medium maintains a certain pressure in the box body 5, and the boosting regulating valve 2 is closed.
[0039] When the working fluid in the working fluid bag 7 needs to be delivered, the filling and discharging valve 12 is opened, and the working fluid in the working fluid bag 7 is squeezed by the contraction of the working fluid bag 7 and the pressure of the pressurized medium in the box 5, so that the working fluid in the working fluid bag 7 enters the diffuser 8 through the through hole 15 on the diffuser 8, and is finally delivered through the working fluid pipe 13.
[0040] The rated working fluid storage capacity of the present invention is 15L to 25L, which can effectively maintain a continuous supply of working fluid, simplify the complexity of the tank system, improve reliability, achieve a working fluid emptying rate of more than 95%, and reduce the overall weight by about 30% compared with the prior art.
[0041] During production of the present invention, the box body 5 is first welded, the support cover 6 is fixed in the box body 5, the pressure chamber 3 and the capsule installation chamber 14 are isolated, and the box bottom flange 10 is welded at the through hole 15 of the box body 5, and the boost pipe 1 connected to the pressure chamber 3 is welded on the box body 5, and the boost regulating valve 2 is installed on the boost pipe 1; then, the diffuser 8 is welded to the working fluid pipe 13, and the convex cap 4 is installed on the diffuser 8 through the opening of the working fluid capsule 7, and is installed into the working fluid capsule 7 to form a working fluid capsule 7 assembly; then, the working fluid capsule 7 assembly is installed into the box body 5 from the opening of the box body 5, and the conical cap is embedded in the cap-shaped structure 16 of the support cover 6 to complete the fixation of the diffuser 8; the opening of the working fluid capsule 7 is folded onto the flange 10, and the sealing ring 9 and the clamping ring 11 are installed on the flange 10 in sequence and then fixed with bolts; finally, the working fluid filling and exhausting valve 12 is fixed to the working fluid pipe 13, and the entire assembly is completed.
[0042] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.
[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0044] It should be understood by those skilled in the art that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.
Claims
1. A microgravity pressure storage type normal temperature storage tank, characterized in that: The invention comprises a box body (5) and a working fluid bag (7), wherein the working fluid bag (7) is installed in the box body (5), a working fluid pipe (13) communicating with the interior of the working fluid bag (7) is provided on the box body (5), and a boost pipe (1) communicating with the interior of the box body (5) is also provided on the box body (5).
2. The microgravity pressure storage type normal temperature storage tank according to claim 1, characterized in that: A support cover (6) is provided in the box body (5), and the support cover (6) divides the box body (5) into a capsule installation cavity (14) and a pressure cavity (3), and the working fluid capsule (7) is located in the capsule installation cavity (14), and the boost pipe (1) is connected to the pressure cavity (3).
3. The microgravity pressure storage type normal temperature storage tank according to claim 2, characterized in that: A diffusion tube (8) connected to the working medium tube (13) is also fixed on the box body (5); the diffusion tube (8) extends into the working medium bag (7), and a plurality of through holes (15) are formed on the diffusion tube (8).
4. The microgravity pressure storage type normal temperature storage tank according to claim 3, characterized in that: The extended end of the diffusion pipe (8) is tightly pressed against the support cover (6).
5. The microgravity pressure storage type normal temperature storage tank according to claim 3, characterized in that: The support cover (6) has a cap-shaped structure (16) protruding into the pressure chamber (3), and the extended end of the diffuser tube (8) is tightly pressed against the cap-shaped structure (16).
6. The microgravity pressure storage type normal temperature storage tank according to claim 5, characterized in that: The extended end of the diffusion tube (8) also has a convex cap (4), and the convex cap (4) is tightly pressed into the cap-shaped structure (16).
7. The microgravity pressure storage type normal temperature storage tank according to claim 3, characterized in that: The central axis of the diffusion tube (8) and the central axis of the box (5) are on the same straight line.
8. The microgravity pressure storage type normal temperature storage tank according to any one of claims 1 to 7, characterized in that: The working fluid pipe (13) is provided with a charging and discharging valve (12), and the boosting pipe (1) is provided with a boosting regulating valve (2).
9. The microgravity pressure storage type normal temperature storage tank according to any one of claims 1 to 7, characterized in that: The box body (5) is provided with a mounting opening, and the opening of the working medium bag (7) is fixed to the edge of the mounting opening.
10. The microgravity pressure storage type normal temperature storage tank according to claim 9, characterized in that: The installation opening of the box body (5) has a flange (10), the working fluid pipe (13) is sealed and fixed to a clamping ring (11), and the opening edge of the working fluid bag (7) is clamped onto the flange (10) through the clamping ring (11).
11. The microgravity pressure storage type normal temperature storage tank according to claim 10, characterized in that: A sealing ring (9) is also provided between the clamping ring (11) and the opening of the working fluid bag (7), and between the flange (10) and the opening of the working fluid bag (7).