CN111232253B - Storage and supply device for solid working medium - Google Patents
Storage and supply device for solid working medium Download PDFInfo
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- CN111232253B CN111232253B CN202010038341.3A CN202010038341A CN111232253B CN 111232253 B CN111232253 B CN 111232253B CN 202010038341 A CN202010038341 A CN 202010038341A CN 111232253 B CN111232253 B CN 111232253B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G5/00—Ground equipment for vehicles, e.g. starting towers, fuelling arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/10—Artificial satellites; Systems of such satellites; Interplanetary vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/40—Arrangements or adaptations of propulsion systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- General Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a storage and supply device of solid working medium, comprising: the system comprises a solid working medium storage and supply device, a pipeline, an isolation valve, an electromagnetic valve, a quick disconnect device and a pressurized gas supply mechanism; the solid working medium storage and supply device is connected with one end of the pipeline, and the other end of the pipeline is used for connecting the electric propulsion device; an isolation valve and an electromagnetic valve are arranged on the pipeline; one end of the quick disconnect-connect device is connected in the pipeline between the isolating valve and the electromagnetic valve, and the other end of the quick disconnect-connect device is connected with the pressurizing air supply mechanism; the protective gas higher than one atmospheric pressure is filled into the storage and supply device, so that the external wet air can be prevented from entering the storage and supply device based on the pressure difference principle, the failure caused by chemical reaction of the solid working medium is avoided, and the storage and supply device can be used as a long-term solid working medium storage and supply device to be placed on the ground.
Description
Technical Field
The application relates to the technical field of aerospace electric propulsion, in particular to a storage and supply device for solid working media.
Background
With the more frequent exploration of the universe space by human beings in recent years, various space satellites rapidly develop like bamboo shoots in the spring after rain, and particularly, the space detection technology is more advanced due to the development of technologies such as a planet detector, deep space detection and a microsatellite. Therefore, efficient propulsion systems are developed to ensure that space exploration tasks can be performed, and the breakthrough of aerospace industry depends on the development of propulsion technologies. At present, the research of the electric propulsion technology in China enters a stable stage, and the electric propulsion technology gradually goes to be practical by virtue of the advantages of high specific impulse, mass and volume and the like. The principle of the electric propulsion technology is a technology for generating thrust by utilizing electric energy to heat, dissociate and accelerate working media to form high-speed jet flow; the electric propulsion system mainly comprises a solid working medium storage and supply device and an electric propulsion device. Although the main indexes of some engineering prototypes meet or exceed the same requirements at home and abroad, a series of ground verification tests are required as the electric propulsion technology can be applied in a mature way. During ground verification, a propeller with solid working media as propellants is in a vacuum state, so that long-time storage of the solid working media becomes a difficult point, and due to factors such as uncontrollable external environment and the like, gas such as external wet air and the like can enter the solid working media storage and supply device and chemically react with the internal solid working media to block a pipeline system, so that the storage and supply device of an electric propulsion system is failed, and destructive trauma is brought to the electric propulsion system. Therefore, a solution is needed to protect the solid working medium in the storage and supply device from moisture and failure during long-term storage.
Disclosure of Invention
The invention provides a solid working medium storage and supply device, which aims to solve or partially solve the technical problem that the solid working medium in the storage and supply device of an electric propulsion system is easy to react with humid air to lose efficacy when being stored for a long time.
In order to solve the technical problem, the invention provides a storage and supply device for solid working media, which comprises: the system comprises a solid working medium storage and supply device, a pipeline, an isolation valve, an electromagnetic valve, a quick disconnect device and a pressurized gas supply mechanism;
the solid working medium storage and supply device is connected with one end of the pipeline, and the other end of the pipeline is used for connecting the electric propulsion device;
an isolation valve and an electromagnetic valve are arranged on the pipeline; one end of the quick disconnect-connect device is connected in the pipeline between the isolating valve and the electromagnetic valve, and the other end of the quick disconnect-connect device is connected with the pressurizing air supply mechanism;
when inflation is needed, the pressurizing gas supply mechanism, the quick disconnect and the electromagnetic valve are opened, and the pressurizing gas supply mechanism outputs protective gas to the circulation pipeline so as to discharge impurity gas in the pipeline from the other end of the pipeline through the electromagnetic valve; and closing the electromagnetic valve and opening the isolating valve, wherein the protective gas flows into the solid working medium storage and supply device through the pipeline, so that the gas pressure of the protective gas in the solid working medium storage and supply device exceeds one atmospheric pressure.
Optionally, the pressurizing gas supply mechanism comprises a gas cylinder and a pressure reducing valve, an inlet of the pressure reducing valve is connected with an outlet of the gas cylinder, and an outlet of the pressure reducing valve is connected with the quick disconnect.
According to the technical scheme, the fluid filter is connected between the pressurizing air supply mechanism and the quick disconnect.
Furthermore, the filtering precision of the fluid filter is 5-25 μm.
According to the technical scheme, the quick disconnect device comprises a male head and a female head, the female head is connected with a pressurizing air supply mechanism, and the male head is connected in a pipeline between the isolation valve and the electromagnetic valve.
Optionally, after the pressure of the protective gas in the solid working medium storage and supply device exceeds one atmosphere, the male head of the quick disconnect device is replaced by a metal plug.
According to the technical scheme, a tee joint is arranged on a pipeline between the isolation valve and the electromagnetic valve; the first end of the tee is connected with the quick disconnect device, the second end of the tee is connected with the isolating valve through a pipeline, and the third end of the tee is connected with the electromagnetic valve through a pipeline.
According to the technical scheme, the flexible heater is arranged on the outer sides of the solid working medium storage and supply device and the pipeline.
According to the technical scheme, when the electric propulsion system does not work, the pressure of the protective gas in the storage and supply device is above 0.1 MPa.
The invention also provides an electric propulsion system, which comprises an electric propulsion device and any one of the storage and supply devices connected with the electric propulsion device.
Through one or more technical schemes of the invention, the invention has the following beneficial effects or advantages:
the invention discloses a solid working medium storage and supply device, wherein protective gas higher than one atmospheric pressure is filled into the storage and supply device, based on the pressure difference principle, external wet air can be prevented from entering a solid working medium storage and supply device and a pipeline, the solid working medium failure caused by chemical reaction between the external wet air and the solid working medium is avoided, and meanwhile, whether the pipeline and an electromagnetic valve are smooth or not can be detected; the storage and supply device provided by the embodiment can be used as a long-term solid working medium storage and supply and protection device to be arranged on the ground, so that a long-time aerospace ground test is facilitated.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic structural diagram of a solid working medium storage and supply device according to an embodiment of the invention;
FIG. 2 shows a schematic structural view of a solid working fluid reservoir comprising a fluid filter according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a solid working medium storage and supply device for replacing a male head of a quick disconnect connector with a metal plug according to one embodiment of the invention;
FIG. 4 is a schematic structural diagram of a solid working medium storage and supply device using a tee joint according to one embodiment of the invention;
description of reference numerals:
1. a solid working medium storage and supply device; 2. solid working medium; 3. an isolation valve; 4. a pipeline; 5. an electromagnetic valve; 6. a quick disconnect; 7 a pressurized gas supply mechanism; 71. a gas cylinder; 72. a pressure reducing valve; 8. a fluid filter; 9. a metal plug; 10. and a tee joint.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
In order to solve the problem that the solid working medium in the aerospace electric propulsion system fails due to the entry of external wet air when stored for a long time, in some alternative embodiments, there is provided a storage and supply device for the solid working medium 2, comprising: the system comprises a solid working medium storage and supply device 1, a pipeline 4, an isolation valve 3, an electromagnetic valve 5, a quick disconnect device 6 and a pressurized gas supply mechanism 7; the solid working medium storage and supply device 1 is connected with one end of a pipeline 4, and the other end of the pipeline 4 is connected with an electric propulsion device; an isolation valve 3 and an electromagnetic valve 5 are arranged on the pipeline 4; one end of the quick disconnect-connect device 6 is connected in the pipeline 4 between the isolating valve 3 and the electromagnetic valve 5, and the other end of the quick disconnect-connect device 6 is connected with the pressurizing air supply mechanism 7;
when inflation is needed, the pressurizing gas supply mechanism 7, the quick disconnect 6 and the electromagnetic valve 5 are opened, the pressurizing gas supply mechanism 7 outputs protective gas to the pipeline 4, and impurity gas in the pipeline 4 is discharged from the other end of the pipeline 4 through the electromagnetic valve 5; closing the electromagnetic valve 5 and opening the isolating valve 3, and enabling the protective gas to flow into the solid working medium storage and supply device 1 through the pipeline 4, so that the pressure of the protective gas in the solid working medium storage and supply device 1 exceeds one atmosphere.
Generally speaking, the embodiment provides a can fill into the storage of the solid working medium who is higher than a standard atmospheric pressure and supply the device, thereby can guarantee that electric propulsion system is in the ground for a long time, need not continuously heat storage and supply the device, can guarantee the drying of inside solid working medium promptly, utilize protective gas's pressure differential simultaneously, prevent the entering of outside moisture, when having ensured long-time ground storage, the storage supplies the device and can guarantee that inside solid working medium does not react with outside gas, improve solid working medium's validity.
Specifically, the method comprises the following steps: the solid working medium storage and supply device 1 is a container cavity for storing the solid working medium 2, the shape of the cavity can be a cuboid, a cylinder or other polyhedral structures, and the material of the cavity is stainless steel material or nickel-based alloy material which does not react with the solid working medium 2, such as 316L, and the like. Optionally, the solid working medium 2 stored by the storage and supply device may be iodine particles or other kinds of solid working media. Taking the iodine working medium as an example, the iodine working medium is easy to chemically react with gases such as water vapor in the air (heat absorption sublimation or gasification), and the iodine working medium is converted into other chemicals with stronger corrosivity and has certain harmfulness, so the pipeline 4 and the electromagnetic valve 5 are made of materials with certain corrosion resistance.
The pressurizing and gas supplying mechanism 7 is used for filling a protective gas with more than standard atmospheric pressure into the pipeline 4 and the solid working medium storage and supply device 1, the protective gas can be nitrogen or other inert gases which do not react with the solid working medium 2, and if the nitrogen is used, the purity of the nitrogen is at least more than 4N (99.99%), 5N (99.999%) or 6N (99.9999%). The pressurizing gas supply mechanism 7 is provided with a gas pressure controller which can control the pressure of the protective gas in the pipeline 4 and the solid working medium storage and supply device 1.
The pipeline 4 in the embodiment is a fluid conveying mechanism, one end of the pipeline 4 is connected with the solid working medium storage and supply device 1, and the other end of the pipeline 4 can be connected with the electric propulsion device so as to convey propulsion working medium to the electric propulsion device during test or work; when the electric propulsion device does not work for a long time, the other end of the pipeline 4 can be communicated with the external environment. The material of the pipeline 4 is stainless steel, nickel-based alloy and other materials which do not react with the conveyed fluid or working medium, and the shape of the pipeline 4 is formulated according to requirements, and is 1/8, 1/4 stainless steel pipes and other materials.
An isolation valve 3 arranged on a pipeline 4 close to one end of the solid working medium storage and supply device 1 is used as a switching gas circuit valve; the isolation valve 3 is made of corrosion-resistant stainless steel series and the like, when the pipeline 4 and the solid working medium storage and supply device 1 need to be inflated for protection, the isolation valve 3 is opened, and gas can enter the solid working medium storage and supply device 1 along the pipeline 4.
The electromagnetic valve 5 arranged on the pipeline 4 close to one end of the electric propulsion device can be a corrosion-resistant and high-temperature stainless steel electromagnetic valve 5 or a nickel-based high-temperature alloy electromagnetic valve 5 and the like, the sealing performance is required to be good, and the leakage rate is required to meet the system requirement. When the electric propulsion system starts to work, the electromagnetic valve 5 is opened to enable the working medium to enter the electric propulsion device through the pipeline 4. It is worth mentioning that the electromagnetic valve 5 can confirm whether the electromagnetic valve 5 acts normally or not and whether the pipeline 4 conveys the working medium smoothly or not according to the sound of air flow passing when the electromagnetic valve 5 is opened by utilizing the pressure difference of the protective gas without an external measuring tool when the electric propulsion system starts to work; if the electromagnetic valve 5 is jammed due to impurity deposition, the electromagnetic valve 5 can be automatically purged when opened through the pressure difference of the protective gas, and the jamming failure of the electromagnetic valve 5 can be improved; on the other hand, when the electric propulsion system does not work and the storage and supply device is in a state of storing the solid working medium 2 for a long time, the electromagnetic valve 5 is in a closed state, so that external gas, particularly water vapor, can be prevented from entering the cavity and the pipeline 4, and adverse effects on the solid working medium 2 are avoided.
The quick disconnect-connection device 6 is used as an intermediary for controlling whether the pressurized gas supply mechanism 7 is communicated with the pipeline 4, a fluid disconnect-connection device of Shiweilok (Swagelok) can be selected, and when the solid working medium storage and supply device 1 and the pipeline 4 need to be inflated, the quick disconnect-connection device 6 is communicated to realize inflation; after the inflation is finished, the air can be conveniently cut off, and the blocking of air is realized. The rapid disconnector 6 is used for controlling the protective gas to flow in, and the rapid disconnector is convenient and rapid and has a simple structure. The quick disconnect 6 can be connected with the pressurized gas supply mechanism 7 and the pipeline 4 through a gas transmission pipeline.
The embodiment discloses a solid working medium storage and supply device, wherein protective gas higher than one atmospheric pressure is filled into the storage and supply device, and based on the pressure difference principle, external wet air can be prevented from entering a solid working medium storage and supply device and a pipeline, so that the solid working medium is prevented from losing efficacy due to chemical reaction with the solid working medium, and meanwhile, whether the pipeline and an electromagnetic valve are smooth can be detected; the storage and supply device provided by the embodiment can be used as a long-term solid working medium storage and supply and protection device to be arranged on the ground, so that a long-time aerospace ground test is facilitated.
The pressurized gas supply mechanism 7 in the above embodiment may use a protection gas source equipped with a delivery pump to conveniently and quickly supply gas, as based on the same inventive concept of the above embodiment, in other alternative embodiments, a specific structure of the pressurized gas supply mechanism 7 is provided, as shown in fig. 2, the pressurized gas supply mechanism 7 includes a gas cylinder 71 and a pressure reducing valve 72, an inlet of the pressure reducing valve 72 is connected to an outlet of the gas cylinder 71, and an outlet of the pressure reducing valve 72 is connected to the quick disconnect 6. The gas cylinder 71 used here is a high-pressure gas cylinder 71 for storing protective gas in liquefied form, on which a pressure reducing valve 72 is mounted, on which pressure reducing valve 72 a high-pressure gauge for detecting the gas pressure in gas cylinder 71 and a low-pressure gauge for controlling the gas output pressure, i.e. the pressure of the protective gas in solid working medium reservoir 1 and line 4 in the reservoir, are provided.
In order to avoid that foreign particles present in the pressurized gas supply 7 and the pipes connected thereto enter the solid working medium reservoir 1, in a further alternative embodiment, as shown in fig. 2, a fluid filter 8 is also connected between the pressurized gas supply 7 and the quick disconnect 6, based on the same inventive concept of the previous embodiment. The fluid filter 8 dampens and filters particles in the fluid, which are typically foreign substances from the gas cylinder 71 or foreign substances remaining when the pipe is connected. Furthermore, the filtering precision of the fluid filter 8 is 5-25 μm. The filtration accuracy, i.e. the filter element pore size of the fluid filter 8, is the maximum particle size that the filter can pass through when a fluid containing impurities passes through the filter. The filtering precision is 5-25 mu m, namely only the impurity particles with the particle size smaller than 5-25 mu m can enter a pipeline or a device behind the fluid filter 8, the majority of the impurity particles can be filtered, and the filtering sensitivity is very high.
Based on the same inventive concept of the above embodiments, in other alternative embodiments, the quick disconnect 6 comprises a male and a female head, the female head being connected to the pressurized air supply 7, the male head being connected in the line 4 between the isolation valve 3 and the solenoid valve 5. Namely, the pipeline 4 leading to the solid working medium storage and supply device 1 is connected with the male head of the quick disconnect-type connector 6, the pipeline 4 at one side of the pressurizing gas supply mechanism 7 is connected with the female head of the quick disconnect-type connector 6, and when the pipelines 4 of the cavity are required to be inflated, the male head and the female head of the quick disconnect-type connector 6 are connected to realize the circulation of gas; when the disconnection is needed, the male head and the female head are separated, and the blocking of gas is realized. The quick disconnect 6 comprising a male connector and a female connector can conveniently and quickly communicate the pipeline 4 with the gas cylinder 71, and has a simple structure and is convenient to implement.
In order to further improve the air tightness of the storage and supply device and avoid the solid working medium 2 from being affected with damp when the solid working medium 2 needs to be stored on the ground for a long time, based on the same inventive concept of the previous embodiment, in still other alternative embodiments, as shown in fig. 3, after the pressure of the protective gas in the solid working medium storage and supply device 1 exceeds one atmosphere, the male end of the quick disconnect device 6 is replaced with a metal plug 9. Namely, after the protective gas is inflated, the male head of the quick disconnect 6 is quickly replaced by the metal plug 9, the metal plug 9 has better air tightness than the male head, the structure is simpler, the weight is lighter, and other work of the satellite is not affected. If inflation is required, the metal plug 9 is replaced with the male end of the quick disconnect 6.
In all the above embodiments, optionally, as shown in fig. 4, a tee joint 10 is provided on the pipeline 4 between the isolation valve 3 and the solenoid valve 5; the first end of the tee joint 10 is connected with the quick disconnect 6, the second end of the tee joint 10 is connected with the isolating valve 3 through the pipeline 4, and the third end of the tee joint 10 is connected with the electromagnetic valve 5 through the pipeline 4. The tee 10, as a connector for connecting between the quick disconnect 6, the isolation valve 3 and the solenoid valve 5, may use a tee fitting, or use a tee valve.
In all the above embodiments, optionally, when the electric propulsion system is not in operation, the pressure of the protective gas in the storage and supply device is above 0.1 MPa; preferably, the pressure of the protective gas is controlled to be more than 0.3MPa, namely, the pressure of the protective gas in the pipeline 4 and the solid working medium storage and supply device 1 is controlled to be more than 3 standard atmospheric pressures through a low pressure meter on the pressure reducing valve 72, so that the solid working medium 2 can be better protected from reacting with the outside humid air, and whether the electromagnetic valve 5 is blocked or not and whether the working medium conveying pipeline 4 is smooth or not can be well checked.
In all the above embodiments, optionally, flexible heaters are provided outside the solid working medium reservoir 1 and all the pipes 4 of the reservoir. The flexible heater can use the flexible heating plate, twines on 2 dust removers of solid working medium and pipeline 4, when needs carry out the electric propulsion experiment, can store up supply ware 1 with solid working medium to pipeline 4 and heat, makes 2 sublimations of solid working medium, and gaseous working medium gets into advancing device through pipeline 4 and carries out work.
The working principle of the storage and supply device is described in detail by taking the storage and supply device in the attached fig. 2 as an example:
(1) when the electric propulsion experiment is not carried out within a period of time, and the solid working medium 2 storage and supply device needs to be stored on the ground for a long time, the inflation protection can be carried out. Taking an external environment as an atmospheric environment as an example, when inflation is carried out, the whole storage and supply device is placed in an environment with the humidity not greater than 30%, a proper iodine particle working medium is filled in a cavity in advance, the electromagnetic valve 5 and the isolation valve 3 are both in a closed state, the male and female heads of the quick disconnect-connection device 6 are connected, the pipeline 4 at the outlet end of the electromagnetic valve 5 is disconnected with the electric propulsion device and communicated with the atmospheric environment, and the good internal sealing performance of the whole storage and supply device is ensured;
(2) the pressurizing and air supplying mechanism 7 uses a high-pressure nitrogen cylinder 71, and adjusts a pressure gauge of a pressure reducing valve 72 to ensure that the gauge pressure of the low-pressure gauge is 0.3 MPa; the nitrogen firstly passes through a fluid filter 8 to filter out particles and impurities which do not meet the requirements, the cleanliness of the gas entering a pipeline 4 is ensured, then the gas flows to inlets of an isolation valve 3 and an electromagnetic valve 5 and a pipeline along the way along the pipeline 4 through a quick disconnect 6 which connects a male head and a female head in advance, and the gauge pressure of the whole pipeline is about 0.3 MPa;
(3) and opening the electromagnetic valve 5, discharging the nitrogen to the atmospheric environment through the electromagnetic valve 5, and firstly discharging impurity gas in the pipeline 4, keeping the electromagnetic valve 5 open for about 3 minutes, and then closing the electromagnetic valve. Immediately after the electromagnetic valve 5 is closed, the isolation valve 3 is opened, nitrogen gas is filled in the whole cavity of the solid working medium storage and supply device 1 and is maintained for more than 3 minutes, so that the pressure of protective gas in the cavity reaches 0.3MPa, and then the isolation valve 3 is closed. So far, the inflation process of whole device finishes, and the public female head and the nitrogen cylinder 71 of disconnection quick disconnect 6 have accomplished whole work of aerifing, under the circumstances of guaranteeing the leakproofness, can aerify once every month.
Based on the same inventive concept as the previous embodiments, in further alternative embodiments, there is provided an electric propulsion system comprising an electric propulsion device, and a storage and supply device of any of the previous embodiments connected to the electric propulsion device.
Generally, the invention has simple structure, saves space, reduces the dependence on a drying box or a drying atmosphere, and has wider applicability in the aspect of operation.
Through one or more embodiments of the present invention, the present invention has the following advantageous effects or advantages:
the invention discloses a solid working medium storage and supply device, wherein protective gas higher than one atmospheric pressure is filled into the storage and supply device, based on the pressure difference principle, external wet air can be prevented from entering a solid working medium storage and supply device and a pipeline, the solid working medium failure caused by chemical reaction between the external wet air and the solid working medium is avoided, and meanwhile, whether the pipeline and an electromagnetic valve are smooth or not can be detected; the storage and supply device provided by the embodiment can be used as a long-term solid working medium storage and supply and protection device to be arranged on the ground, so that a long-time aerospace ground test is facilitated.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A device for storing and supplying solid working medium is characterized in that the device comprises: the system comprises a solid working medium storage and supply device, a pipeline, an isolation valve, an electromagnetic valve, a quick disconnect device and a pressurized gas supply mechanism;
the solid working medium storage and supply device is connected with one end of the pipeline, and the other end of the pipeline is used for connecting an electric propulsion device; the solid working medium storage and supply device is made of stainless steel or nickel-based alloy;
the pipeline is provided with the isolation valve and the electromagnetic valve; one end of the quick disconnect is connected in a pipeline between the isolation valve and the electromagnetic valve, and the other end of the quick disconnect is connected with the pressurizing air supply mechanism;
when inflation is needed, the pressurizing gas supply mechanism, the quick disconnect and the electromagnetic valve are opened, protective gas is output through the pressurizing gas supply mechanism and flows through the pipeline, and therefore impurity gas in the pipeline is discharged from the other end of the pipeline through the electromagnetic valve; closing the electromagnetic valve and opening the isolating valve, wherein the protective gas flows into the solid working medium storage and supply device through the pipeline, so that the gas pressure of the protective gas in the solid working medium storage and supply device exceeds one atmospheric pressure;
the electromagnetic valve is used for judging whether the electromagnetic valve acts normally or not and whether the pipeline conveys working media smoothly or not according to the sound of air flow passing when the electric propulsion device starts to work and the electromagnetic valve is opened; and when the electromagnetic valve is jammed, purging is performed when the electromagnetic valve is opened through the pressure difference of the protective gas.
2. The storage and supply device according to claim 1, wherein the pressurized gas supply mechanism comprises a gas cylinder and a pressure reducing valve, an inlet of the pressure reducing valve is connected with an outlet of the gas cylinder, and an outlet of the pressure reducing valve is connected with the quick disconnect.
3. The storage supply of claim 1, further comprising a fluid filter connected between said pressurized gas supply mechanism and said quick disconnect.
4. The reservoir according to claim 3, wherein the fluid filter has a filtration accuracy of 5 μm to 25 μm.
5. The storage supply of claim 1 wherein said quick disconnect comprises a male connector and a female connector, said female connector being connected to said pressurized gas supply mechanism, said male connector being connected in a line between said isolation valve and said solenoid valve.
6. A storage and supply arrangement according to claim 5 wherein the male end of the quick disconnect is replaced with a metal plug after the pressure of the shielding gas in the solid working medium storage and supply vessel exceeds one atmosphere.
7. The storage and supply device according to claim 1, wherein a tee is provided on said conduit between said isolation valve and said solenoid valve; the first end of the tee joint is connected with the quick disconnecting device, the second end of the tee joint is connected with the isolating valve through the pipeline, and the third end of the tee joint is connected with the electromagnetic valve through the pipeline.
8. A reservoir according to claim 1 wherein a flexible heater is provided outside the solid working medium reservoir and the conduit.
9. An electric propulsion system comprising an electric propulsion device and a storage and supply device as claimed in any one of claims 1 to 8 connected to the electric propulsion device.
10. An electric propulsion system as in claim 9, wherein the pressure of the shielding gas in the reservoir is above 0.1MPa when the electric propulsion system is not in operation.
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