Device and method for improving the filling density of a solid working substance

Abstract

The application provides a device and method for improving the filling density of solid working substance, which comprises a storage cavity for containing the solid working substance, wherein the storage cavity comprises a first opening; a flange plate fixed to the storage cavity, wherein the flange plate comprises a second opening corresponding to the first opening; a flange cover detachably fixed to the flange plate, wherein the flange cover covers the second opening and forms a sealed cavity together with the flange plate and the storage cavity; an air inlet valve and an air outlet valve fixed to the flange cover and communicating with the sealed cavity; and a vibration table for vibrating the storage cavity. According to the above, the application provides a technical solution, wherein the storage cavity is vibrated by the vibration table, so that the solid working substance contained in the storage cavity can be broken, and the filling density of the solid working substance can be rapidly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spaceflight electric propulsion technology, and more particularly to a device and method for improving the filling density of solid working medium. BACKGROUND

[0002] Micro-satellites have the advantages of low cost and short development cycle, which meet the needs of commercial spaceflight. From natural disasters to the development of the Internet of Things, satellite technology is indispensable. The development of micro-satellites relies on the development of core propulsion systems, which can provide variable orbit, de-orbit, deep space exploration, and daily constellation maintenance. Electric propulsion is the development trend of future functional satellites. Electric propulsion technology uses electric energy to heat, understand and accelerate working medium to form high-speed jet flow to generate thrust. It has the advantages of high specific impulse and light weight. Although traditional chemical propulsion is mature, the storage system is large in size and weight and is in a high-pressure state. The system using iodine as working medium does not require a high-pressure tank, is low in price, and has a large storage capacity, becoming a research hotspot in recent years. However, solid iodine particles are hollow spherical particles, and the filling density varies greatly depending on the process. How to achieve high filling density is a key problem for lightweight electric propulsion systems. SUMMARY

[0003] Therefore, the present application provides a device and method for improving the filling density of solid working medium, effectively solving the technical problems existing in the prior art. The solid working medium is broken by vibration, which can quickly improve the filling density of the solid working medium.

[0004] To achieve the above object, the technical scheme provided by the present application is as follows:

[0005] A device for improving the filling density of solid working medium, comprising:

[0006] a storage cavity for containing solid working medium, the storage cavity comprising a first opening;

[0007] a flange plate fixed to the storage cavity, the flange plate comprising a second opening corresponding to the first opening;

[0008] a flange cover detachably fixed to the flange plate, the flange cover covering the second opening and forming a sealed cavity together with the flange plate and the storage cavity;

[0009] an air inlet valve and an air outlet valve fixed to the flange cover and communicating with the sealed cavity;

[0010] and a vibration table for vibrating the storage cavity.

[0011] Optionally, it further comprises:

[0012] A sealing ring is arranged around the first opening and between the flange plate and the flange cover.

[0013] Optionally, the sealing ring is made of rubber.

[0014] Optionally, the rubber is FFKM or FKM.

[0015] Optionally, the storage cavity is a cylindrical storage cavity, a cuboid storage cavity or a circular truncated cone storage cavity.

[0016] Optionally, the storage cavity is made of stainless steel.

[0017] Optionally, the solid working substance is solid iodine working substance.

[0018] Correspondingly, the application also provides a method for improving the filling density of solid working substance, which adopts the device for improving the filling density of solid working substance.

[0019] The solid working substance is filled into the storage cavity.

[0020] The flange cover and the flange plate are fixed, and the flange cover, the flange plate and the storage cavity jointly form a sealed cavity.

[0021] After the dry inert gas is filled into the sealed cavity through the gas inlet valve, the gas inlet valve is closed.

[0022] The storage cavity is fixed on the vibration table, and the vibration table controls the vibration of the storage cavity for a preset time.

[0023] Optionally, before the solid working substance is filled into the storage cavity, the method further comprises:

[0024] The flange cover and the flange plate are fixed, and the sealed cavity is exhausted through the gas outlet valve, and then the gas outlet valve is closed.

[0025] After the flange cover and the flange plate are disassembled in a dry environment, the solid working substance is filled into the storage cavity in the dry environment.

[0026] Optionally, the dry inert gas comprises dry nitrogen.

[0027] Compared with the prior art, the technical solution provided by the application has at least the following advantages:

[0028] The application provides a device and method for improving the filling density of solid working substance, comprising: a storage cavity for containing solid working substance, the storage cavity comprising a first opening; a flange plate fixed to the storage cavity, the flange plate comprising a second opening corresponding to the first opening; a flange cover detachably fixed to the flange plate, the flange cover covering the second opening and forming a sealed cavity together with the flange plate and the storage cavity; an air inlet valve and an air outlet valve fixed to the flange cover and communicating with the sealed cavity; and a vibration table for vibrating the storage cavity.

[0029] From the above, the application provides a technical solution, which can shake the solid working substance contained in the storage cavity by vibrating the storage cavity by the vibration table, so as to quickly improve the filling density of the solid working substance. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute a part of the embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the provided drawings.

[0031] Figure 1 A structural schematic diagram of a device for improving the filling density of solid working substance provided by the embodiment of the application;

[0032] Figure 2 A structural schematic diagram of another device for improving the filling density of solid working substance provided by the embodiment of the application;

[0033] Figure 3 A structural schematic diagram of still another device for improving the filling density of solid working substance provided by the embodiment of the application;

[0034] Figure 4 A flowchart of a method for improving the filling density of solid working substance provided by the embodiment of the application;

[0035] Figure 5 A flowchart of another method for improving the filling density of solid working substance provided by the embodiment of the application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments only constitute a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0037] As described in the background, although the conventional chemical propulsion is mature in technology, the storage system is large in volume and weight and is in a high pressure state; and the system taking iodine as the working medium does not need a high pressure tank, is low in price and large in storage capacity, and has become a research hotspot in recent years. However, the solid iodine particles are hollow spherical particles, and the filling density varies greatly according to the process, and how to realize high filling density becomes a key problem of the lightweight electric propulsion system.

[0038] Based on this, the embodiment of the present application provides a device and method for improving the filling density of solid working medium, effectively solving the technical problems existing in the prior art, and adopting a vibration mode to break the solid working medium, so as to achieve the purpose of rapidly improving the filling density of the solid working medium.

[0039] To achieve the above object, the technical scheme provided by the embodiment of the present application is as follows, which will be specifically combined with Figures 1 to 5 The technical scheme provided by the embodiment of the present application will be described in detail.

[0040] Reference Figure 1 Fig. 1 is a structural schematic diagram of a device for improving the filling density of solid working medium provided by the embodiment of the present application, wherein the device comprises:

[0041] A storage cavity 200 for containing solid working medium 100, wherein the storage cavity 200 comprises a first opening 210.

[0042] A flange plate 300 fixed on the storage cavity 200, wherein the flange plate 300 comprises a second opening 310 corresponding to the first opening 210.

[0043] A flange cover 400 detachably fixed with the flange plate 300, wherein the flange cover 400 covers the second opening 310 and forms a sealed cavity together with the flange plate 300 and the storage cavity 200.

[0044] An air inlet valve 510 and an air outlet valve 520 fixed on the flange cover 400 and communicating with the sealed cavity.

[0045] And a vibration table 600 for vibrating the storage cavity 200.

[0046] In an embodiment of the present application, the vibration table provided by the present application can control the storage cavity to vibrate up and down in the vertical direction, vibrate left and right in the horizontal direction, or pendulum vibration, and the present application does not make specific limitations thereon, and specific settings need to be made according to actual application. Alternatively, the vibration table provided by the embodiment of the present application can control the storage cavity to adopt a predetermined vibration frequency, vibrate a predetermined number of times, and each time vibrate for a predetermined time; wherein the predetermined number of times can be 3-5 times, including the end point value; the predetermined time can be 3-5 minutes, including the end point value, and the present application does not make specific limitations on the specific values of the predetermined frequency, the predetermined number of times and the predetermined time, and specific design needs to be made according to actual application.

[0047] It can be understood that the technical scheme provided by the embodiment of the present application can shake the solid working substance contained in the storage cavity by vibrating the storage cavity through the vibration table, so as to finally achieve the purpose of rapidly improving the filling density of the solid working substance. At the same time, the device provided by the embodiment of the present application does not need to heat the sealed cavity to liquefy the solid working substance, thereby improving the safety of the device.

[0048] In an embodiment of the present application, the device provided by the present application can further include a sealing ring arranged between the flange plate and the flange cover to improve the sealing performance of the sealed cavity. Specifically, referring to FIG. 1, the device provided by the embodiment of the present application includes a sealing ring 500 arranged between the flange plate 300 and the flange cover 400. Figure 2

[0049] The storage cavity 200 for containing the solid working substance 100, wherein the storage cavity 200 includes a first opening 210.

[0050] The flange plate 300 fixed to the storage cavity 200, wherein the flange plate 300 includes a second opening 310 corresponding to the first opening 210.

[0051] The flange cover 400 detachably fixed to the flange plate 300, wherein the flange cover 400 covers the second opening 310 and forms a sealed cavity together with the flange plate 300 and the storage cavity 200.

[0052] The air inlet valve 510 and the air outlet valve 520 fixed to the flange cover 400 and communicating with the sealed cavity.

[0053] And the vibration table 600 for vibrating the storage cavity 200.

[0054] Further, the device further includes:

[0055] ​A sealing ring 700 is arranged around the first opening 210 and between the flange plate 300 and the flange cover 400, so that the sealing degree between the flange plate 300 and the flange cover 400 is improved, and the sealing effect of the sealing cavity is further improved.

[0056] Optionally, the material of the sealing ring can be rubber. The rubber can be FFKM (perfluoroether rubber) or FKM (fluorine rubber), which is not limited in the present application.

[0057] In any of the above embodiments, the storage cavity can be shaped to facilitate filling and discharging of the solid working medium. The storage cavity can be cylindrical, cuboid or circular truncated cone shaped, and the first opening can be circular, rectangular, etc.

[0058] The material of the storage cavity is compatible with the solid working medium. The material of the storage cavity can be stainless steel, such as 316L, 316, etc., which can provide a dry environment inside the sealing cavity and prevent the solid working medium from changing. The wall thickness of the storage cavity can be 2 mm, which is not limited in the present application.

[0059] Similarly, the inner wall of the air inlet valve and the air outlet valve is compatible with the solid working medium, which can be stainless steel, such as 316L, 316, etc.

[0060] In addition, the bottom of the storage cavity away from the flange plate can be provided with a lug structure, which is fixed to the vibration table. For example, as shown in Figure 3 Fig. 7 is a structural schematic diagram of another device for improving the filling density of the solid working medium according to an embodiment of the present application. The device comprises a lug structure 220 arranged at the bottom edge of the storage cavity 200, and the storage cavity 200 is fixed to the vibration table 600 through the lug structure 220.

[0061] In any of the above embodiments, the solid working medium can be solid iodine working medium. The solid iodine working medium is in the shape of hollow spherical particles. The device for improving the filling density of the solid working medium can improve the density of the solid iodine working medium from 2.5 g / cm 3 to 3.0 g / cm 3The solid working substance can be broken into pieces, and the density of the solid working substance can be increased by about 20%, the storage capacity can be 1.2 times of the existing storage capacity under the same volume condition, or the volume can be reduced to 83% of the existing volume under the same filling mass condition, which can be optimized according to different requirements. Therefore, the purposes of prolonging the service life, optimizing the volume, protecting the cavity and reducing the cost can be achieved.

[0062] Correspondingly, the embodiment of the present application also provides a method for increasing the filling density of the solid working substance. Figure 1 and Figure 4 As shown in the method for increasing the filling density of the solid working substance provided by the embodiment of the present application, the device comprises: Figure 4 As shown in the method for increasing the filling density of the solid working substance provided by the embodiment of the present application, the device comprises: Figure 1 As shown in the method for increasing the filling density of the solid working substance provided by the embodiment of the present application, the device comprises:

[0063] The storage cavity 200 for containing the solid working substance 100, wherein the storage cavity 200 comprises a first opening 210.

[0064] The flange plate 300 fixed to the storage cavity 200, wherein the flange plate 300 comprises a second opening 310 corresponding to the first opening 210.

[0065] The flange cover 400 detachably fixed to the flange plate 300, wherein the flange cover 400 covers the second opening 310 and forms a sealed cavity together with the flange plate 300 and the storage cavity 200.

[0066] The air inlet valve 510 and the air outlet valve 520 fixed to the flange cover 400 and communicating with the sealed cavity.

[0067] And the vibration table 600 for vibrating the storage cavity 200.

[0068] As shown in the method for increasing the filling density of the solid working substance provided by the embodiment of the present application, the method comprises: Figure 3 S1, the solid working substance is filled into the storage cavity.

[0069] S2, the flange cover is fixed to the flange plate, and the flange cover, the flange plate and the storage cavity form a sealed cavity together.

[0070] S3, after the dry inert gas is filled into the sealed cavity through the air inlet valve, the air inlet valve is closed.

[0071] S4, the storage cavity is fixed to the vibration table, and the vibration table controls the vibration of the storage cavity for a preset time.

[0072]

[0073] ​In an embodiment of the present application, the vibration table provided by the present application can control the storage cavity to vibrate up and down in the vertical direction, vibrate left and right in the horizontal direction, or pendulum vibration, and the present application does not make specific limitations thereon, and specific settings need to be made according to actual applications. Alternatively, the vibration table provided by the embodiment of the present application can control the storage cavity to adopt a predetermined vibration frequency, vibrate a predetermined number of times, and each vibration lasts a predetermined time; wherein the predetermined number of times can be 3-5 times, including the end point value; the predetermined time can be 3-5 minutes, including the end point value, and the present application does not make specific limitations on the specific values of the predetermined frequency, the predetermined number of times, and the predetermined time, and specific designs need to be made according to actual applications.

[0074] It can be understood that the technical solution provided by the embodiment of the present application can shake the storage cavity through the vibration table, and then the solid working substance contained in the storage cavity can be crushed, and finally the purpose of rapidly improving the filling density of the solid working substance can be achieved. At the same time, the device provided by the embodiment of the present application does not need to heat the sealed cavity to liquefy the solid working substance, thereby improving the safety of the device.

[0075] Further, in order to improve the dryness of the sealed cavity, before the solid working substance is loaded into the storage cavity, the method further comprises: fixing the flange cover and the flange plate, closing the exhaust valve after the sealed cavity is exhausted through the exhaust valve; after the flange cover and the flange plate are disassembled in a dry environment, the solid working substance is loaded into the storage cavity in the dry environment.

[0076] Specifically, as shown in Figure 5 the flow chart of another method for improving the filling density of the solid working substance provided by the embodiment of the present application, wherein the method comprises:

[0077] S11, fixing the flange cover and the flange plate, closing the exhaust valve after the sealed cavity is exhausted through the exhaust valve.

[0078] S1, after the flange cover and the flange plate are disassembled in a dry environment, the solid working substance is loaded into the storage cavity in the dry environment.

[0079] S2, fixing the flange cover and the flange plate, the flange cover, the flange plate, and the storage cavity together form a sealed cavity.

[0080] S3, after the dry inert gas is filled into the sealed cavity through the gas inlet valve, the gas inlet valve is closed.

[0081] S4, fixing the storage cavity to the vibration table, and the vibration table controls the storage cavity to vibrate for a predetermined time.

[0082] In an embodiment of the present application, the device further comprises a sealing ring arranged between the flange plate and the flange cover to improve the sealing performance of the sealing cavity.

[0083] Optionally, the sealing ring can be made of rubber. The rubber can be FFKM (perfluoroether rubber) or FKM (fluorine rubber), which is not limited in the present application.

[0084] In any of the above embodiments of the present application, the storage cavity can be shaped to facilitate the filling and discharging of the solid working substance. The storage cavity can be cylindrical, cuboid or circular truncated cone shaped, and the first opening can be circular, rectangular, etc.

[0085] In addition, the material of the storage cavity is compatible with the solid working substance. The material of the storage cavity can be stainless steel, such as 316L, 316, etc., which can provide a dry environment inside the sealing cavity to prevent the solid working substance from changing. The wall thickness of the storage cavity can be 2 mm, which is not limited in the present application.

[0086] Similarly, the inner wall of the gas inlet valve and the gas outlet valve is made of a material compatible with the solid working substance, which can be stainless steel, such as 316L, 316, etc.

[0087] In an embodiment of the present application, the dry inert gas can include dry nitrogen, which is not limited in the present application.

[0088] In any of the above embodiments of the present application, the solid working substance can be solid iodine. The solid iodine can be in the shape of hollow spherical particles. The device for improving the filling density of the solid working substance can increase the density of the solid iodine from 2.5 g / cm 3 (natural filling state) to 3.0 g / cm 3 (shattered state), thereby increasing the density of the solid working substance by about 20%. Under the same volume conditions, the storage capacity is 1.2 times that of the prior art. Alternatively, under the same filling mass conditions, the volume can be reduced to 83% of the prior art, which can be optimized according to different requirements. Thus, the device can achieve the purposes of prolonging the service life, optimizing the volume, protecting the cavity and reducing the cost, etc.

[0089] The embodiment of the present application provides a device and method for improving the filling density of solid working substance, which comprises a storage cavity for containing the solid working substance, wherein the storage cavity comprises a first opening; a flange plate fixed on the storage cavity, wherein the flange plate comprises a second opening corresponding to the first opening; a flange cover detachably fixed on the flange plate, wherein the flange cover covers the second opening and forms a sealed cavity together with the flange plate and the storage cavity; an air inlet valve and an air outlet valve fixed on the flange cover and communicated with the sealed cavity; and a vibration table for vibrating the storage cavity.

[0090] From the above, the technical scheme provided by the embodiment of the present application can vibrate the storage cavity by the vibration table, thereby breaking the solid working substance contained in the storage cavity, and finally achieving the purpose of rapidly improving the filling density of the solid working substance.

[0091] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for increasing the packing density of a solid working fluid, characterized in that, include: A storage cavity for holding a solid working medium, the storage cavity including a first opening; A flange fixed to the storage cavity, the flange including a second opening corresponding to the first opening; A flange cover detachably fixed to the flange, the flange cover covering the second opening and forming a sealed cavity together with the flange and the storage cavity; An intake valve and an exhaust valve are fixed to the flange cover and communicate with the sealing cavity; And a vibration table for vibrating the storage cavity to break up the solid working medium contained in the storage cavity; The method of using the device for increasing the density of the solid working fluid includes: The solid working medium is loaded into the storage cavity; The flange cover is fixed to the flange plate, and the flange cover, the flange plate, and the storage cavity together form a sealed cavity; After the dry inert gas is introduced into the sealed cavity through the air inlet valve, the air inlet valve is closed. The storage cavity is fixed to the vibration table, and the vibration table controls the storage cavity to vibrate for a preset time to break up the solid working medium contained in the storage cavity.

2. The apparatus for increasing the packing density of a solid working fluid according to claim 1, characterized in that, Also includes: A sealing ring surrounding the first opening and disposed between the flange and the flange cover.

3. The apparatus for increasing the packing density of a solid working fluid according to claim 2, characterized in that, The sealing ring is made of rubber.

4. The apparatus for increasing the packing density of a solid working fluid according to claim 3, characterized in that, The rubber is FFKM or FKM.

5. The apparatus for increasing the packing density of a solid working fluid according to claim 1, characterized in that, The storage cavity is a cylindrical storage cavity, a cuboid storage cavity, or a frustum-shaped storage cavity.

6. The apparatus for increasing the packing density of a solid working fluid according to claim 1, characterized in that, The storage cavity is made of stainless steel.

7. The apparatus for increasing the packing density of a solid working fluid according to claim 1, characterized in that, The solid working medium is a solid iodine working medium.

8. A method for increasing the packing density of a solid working fluid, characterized in that, The apparatus for increasing the packing density of a solid working fluid according to any one of claims 1-7, wherein the method comprises: The solid working medium is loaded into the storage cavity; The flange cover is fixed to the flange plate, and the flange cover, the flange plate, and the storage cavity together form a sealed cavity; After the dry inert gas is introduced into the sealed cavity through the air inlet valve, the air inlet valve is closed. The storage cavity is fixed to the vibration table, and the vibration table controls the storage cavity to vibrate for a preset time to break up the solid working medium contained in the storage cavity.

9. The method for increasing the packing density of a solid working fluid according to claim 8, characterized in that, Before the solid working medium is loaded into the storage cavity, the following are also included: Fix the flange cover to the flange, vent the air from the sealing cavity through the vent valve, and then close the vent valve; After the flange cover is removed from the flange in a dry environment, the solid working fluid is loaded into the storage cavity in the same dry environment.

10. The method for increasing the packing density of a solid working fluid according to claim 8, characterized in that, The dry inert gas includes dry nitrogen.

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