Iodine working medium storage box not prone to being blocked

Abstract

The iodine working medium storage box comprises an outer shell, a ceramic heating sleeve, a box cover, a conveying pipe and an electromagnetic valve, the ceramic heating sleeve is connected in the outer shell in a sleeved mode, the top end of the ceramic heating sleeve is flush with the top end of the outer shell, a through hole is formed in the center of the box cover, and the conveying pipe is arranged in the through hole. A through hole is formed in the conveying pipe, three-step continuous circular grooves are formed around the through hole, the conveying pipe penetrates into the through hole, the end of the conveying pipe extends into the third-step groove, a flange head is arranged at the end of the conveying pipe, a ceramic filter is installed between the flange head and the groove bottom, a sealing piece is installed in the second-step groove, a pressing piece is installed in the first-step groove, and the ceramic filter is installed in the second-step groove. A steam filtering plate is installed below the through hole, and the electromagnetic valve is installed on the portion, extending out of the box cover, of the conveying pipe. By means of the mode, the problem of pipeline blocking caused by the fact that iodine steam is solidified in the conveying pipe after the electromagnetic valve is closed can be solved, and the influence on the opening and closing sensitivity of the valve is reduced.

Description

Technical Field

[0001] The utility model relates to the field of aerospace technology, in particular to an iodine working medium storage tank that is not easily blocked. Background Technique

[0002] As time goes by, mankind has gradually entered the space age. As a landmark creation of the space age, in order to adapt to the current military detection, military confrontation environment and launch cost considerations, the volume and weight of artificial satellites tend to be smaller and smaller. Usually, satellites weighing less than 10KG are called nanosatellites, and those weighing less than 1KG are called picosatellites. Both picosatellites and nanosatellites are called microsatellites. With the rapid progress of technology in recent years, high-performance microsatellites are almost applied in all fields where satellites may be used. For microsatellites, an electric propulsion system is usually used to adjust the in-orbit attitude. The principle of the electric propulsion system is a technology that uses electric energy to heat, dissociate and accelerate the working medium to form a jet to generate thrust. For electric propulsion technology, it mainly includes a solid working medium storage and supply device and an ion generation device. Currently, the commonly used storage and supply device generally directly sets an electric heater outside the storage tank body, evaporates and gasifies the internally stored solid working medium and then transports it into the ion generation device. During this process, since there is no dedicated heat insulation structure outside the storage tank body, a large amount of energy is dissipated during heating, which is not conducive to the continuous operation of microsatellites in deep space. To solve the above problems, our company has developed an iodine working medium storage tank CN218949510U. Although this product has good heat insulation and heat preservation effects, fast heating, and good blocking effect on energy dissipation, it is found during multiple deep space working condition simulations that since the delivery pipe is directly connected to the tank cover, when the electronic valve is closed to stop propulsion, iodine vapor is easily solidified on the delivery pipe between the electronic valve and the tank cover. On the one hand, it will affect the opening and closing sensitivity of the electronic valve. On the other hand, in severe cases, it will even block the pipeline, increasing the overall heating time. Content of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide an iodine working medium storage tank that is not easily blocked during use.

[0004] To solve the above technical problems, a technical solution adopted by the present utility model is: to provide an iodine working medium storage tank that is not easily blocked. The iodine working medium storage tank that is not easily blocked includes: an outer shell, a ceramic heating sleeve, a tank cover, a delivery pipe, and a solenoid valve. The outer shell is made of a hard heat-insulating medium. The ceramic heating sleeve is sleeved inside the outer shell to form a containing cavity for the iodine working medium. The top end of the ceramic heating sleeve is flush with the top end of the outer shell. The tank cover is hermetically fixed on the opening of the iodine working medium containing cavity. A through hole is provided in the center of the tank cover, and a three-stage continuous circular groove is provided around the through hole. The delivery pipe penetrates into the through hole, and the end extends into the third-stage groove in the three-stage continuous circular groove. A flange head matching the diameter of the third-stage groove is provided at the end position of the delivery pipe. A ceramic filter is installed between the flange head and the bottom of the third-stage groove. The sum of the thickness of the flange head and the thickness of the ceramic filter is equal to the depth of the third-stage groove. A sealing piece is installed in the second-stage groove of the three-stage continuous circular groove, and a pressing piece is installed in the first-stage groove of the three-stage continuous circular groove. A steam filter plate is installed below the through hole. The solenoid valve is installed on the part of the delivery pipe extending outside the tank cover.

[0005] In a preferred embodiment of the present utility model, a vacuum insulation layer is provided inside the outer shell.

[0006] In a preferred embodiment of the present utility model, external threads are provided on the outer side of the top end of the outer shell, and a pressing eaves and a convex platform are provided at the bottom of the tank cover. The pressing eaves cover the top end of the outer shell. Internal threads matching the external threads are provided on the inner side of the pressing eaves. The outer diameter of the convex platform matches the inner diameter of the ceramic heating sleeve. A sealing groove is surrounded by the convex platform and the pressing eaves together, and a sealing gasket is installed at the bottom of the sealing groove. Tightening threaded holes are also provided on the pressing eaves, and tightening screws are installed in the tightening threaded holes.

[0007] In a preferred embodiment of the present utility model, the ceramic filter includes a ceramic filter element and a ceramic heating coil. The ceramic filter element and the ceramic heating coil have the same thickness. The diameter of the ceramic filter element is the same as the inner diameter of the delivery pipe. The ceramic heating coil is sleeved on the ceramic filter element, and the outer diameter of the ceramic heating coil matches the diameter of the third-stage groove.

[0008] In a preferred embodiment of the present utility model, a pressure sensor is also installed on the tank cover, and the sensing end of the pressure sensor is installed in the gap between the steam filter plate and the tank cover.

[0009] The beneficial effects of the present utility model are as follows: The present utility model is a further improvement on the basis of the company's existing products for the problems occurring in the working condition simulation. By installing a special ceramic filter at the end of the conveying pipe installed on the box cover on the original basis, the path length of molecules entering the conveying pipe is increased. In this way, when the thruster stops working, the iodine vapor remaining in the ceramic filter will solidify in the pores of the filter, effectively preventing the excess iodine vapor molecules caused by the preheating of the heating jacket in the storage tank from continuing to enter the conveying pipe, thereby significantly reducing the solid iodine solidified on the pipe wall in the conveying pipe, reducing the influence of the solid iodine on the opening and closing of the solenoid valve, and preventing the internal blockage of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of a preferred embodiment of the mobile phone of the present utility model;

[0011] Figure 2 is Figure 1 a magnified schematic structural diagram of the installation position of the ceramic filter element in

[0012] The markings of each component in the drawings are as follows:

[0013] 1. Outer housing, 2. Vacuum interlayer, 3. Ceramic heating jacket, 4. Box cover, 5. Pressing piece, 6. Sealing piece, 7. Ceramic heating coil, 8. Ceramic filter element, 9. Connecting column, 10. Steam filter plate, 11.

[0014] Solenoid valve, 12. Pressure sensor, 13. Conveying pipe, 14. Flange head, 15. Fastening screw, 16. Sealing gasket;

[0015] 401. Eaves pressing, 402. Boss. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following elaborates on the preferred embodiments of the present utility model in detail with reference to the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0017] Please refer to Figure 1 and Figure 2 , the embodiments of the present utility model include:

[0018] An iodine working fluid storage tank that is not easily blocked, the iodine working fluid storage tank that is not easily blocked includes: an outer casing 1, a ceramic heating sleeve 3, a tank cover 4, a delivery pipe 13, and a solenoid valve 11. The outer casing 1 is integrally formed by heat-insulating tempered glass. A vacuum interlayer 2 is provided inside the outer casing 1, which can further reduce heat dissipation. The ceramic heating sleeve 3 is sleeved inside the outer casing 1 to form a cavity for containing the iodine working fluid. The top end of the ceramic heating sleeve 3 is flush with the top end of the outer casing 1. The tank cover 4 is hermetically fixed to the opening of the iodine working fluid cavity. A through hole is provided in the center of the tank cover 4, and a three-stage continuous circular groove is provided around the through hole. The delivery pipe 13 penetrates into the through hole, and the end extends into the third-stage groove of the three-stage continuous circular groove. A flange head 14 matching the diameter of the third-stage groove is provided at the end position of the delivery pipe 13. A ceramic filter is installed between the flange head 14 and the bottom of the third-stage groove. The sum of the thickness of the flange head 14 and the thickness of the ceramic filter is equal to the depth of the third-stage groove. A sealing sheet 6 is installed in the second-stage groove of the three-stage continuous circular groove, and a pressing sheet 5 is installed in the first-stage groove of the three-stage continuous circular groove. A steam filter plate 10 is installed below the through hole. The steam filter plate 10 is connected to the tank cover 4 by 4 connecting columns 9. The solenoid valve 11 is installed on the part of the delivery pipe 13 extending outside the tank cover 4.

[0019] External threads are provided on the outer side of the top end of the outer casing 1. The bottom of the tank cover 4 is provided with a pressing eaves 401 and a boss 402. The pressing eaves 401 covers the top end of the outer casing 1. Internal threads matching the external threads are provided on the inner side of the pressing eaves 401. The outer diameter of the boss 402 matches the inner diameter of the ceramic heating sleeve 3. A sealing groove is surrounded by the boss 402 and the pressing eaves 401 together, and a sealing gasket 16 is installed at the bottom of the sealing groove. In this way, the tank cover 4 can be tightly sealed on the top end of the outer casing 1 during assembly. Tightening threaded holes are also provided on the pressing eaves 401, and tightening screws 15 are installed in the tightening threaded holes. The tightening screws 15 can effectively prevent the tank cover 4 from loosening the threads and improve the safety of closing the cover.

[0020] The ceramic filter includes a ceramic filter element 8 and a ceramic heating coil 7. The ceramic filter element 8 and the ceramic heating coil 7 have the same thickness. The diameter of the ceramic filter element 8 is the same as the inner diameter of the delivery pipe 13. The ceramic heating coil 7 is sleeved on the ceramic filter element 8, and the outer diameter of the ceramic heating coil 7 matches the diameter of the third-order groove. Such a setting of the independent ceramic heating coil 7 can heat the ceramic filter element 8 while the solenoid valve 11 is opened, quickly sublimate the condensed iodine on the ceramic filter element 8 into gas, thereby unblocking it, enabling the iodine vapor in the box to enter the delivery pipe 13. When it needs to be closed, the iodine vapor will start to solidify in the ceramic filter element 8 first, thereby blocking the passage of the iodine vapor into the delivery pipe 13 and reducing the accumulation of solid iodine around the solenoid valve 11.

[0021] A pressure sensor 12 is also installed on the box cover 4, and the sensing end of the pressure sensor is installed in the gap between the steam filter plate 10 and the box cover 4. The steam pressure in the box can be confirmed at any time, and the heating power of the ceramic heating sleeve 3 can be controlled according to the steam pressure.

[0022] The working principle of this application is that after the electronic valve 11 is opened, the iodine working medium in the box sublimes into gas under heating, and then enters the delivery pipe 13 after passing through the steam filter plate 10 and the ceramic filter element 8, enters the ion generating device to push the satellite to move. When the satellite stops being pushed, the electronic valve 11 closes, and the iodine in the ceramic filter element 8 naturally solidifies, which can prevent the iodine vapor from entering the delivery pipe 13 and prevent solid iodine from accumulating at the opening and closing position of the solenoid valve 11, affecting the operation of the solenoid valve 11. When it needs to be started again, the ceramic heating coil 7 can work simultaneously with the ceramic heating sleeve 3, unblock the gas channel in the filter element while the iodine in the box starts to sublimate, achieve overall through connection, and transport the iodine vapor into the ion thruster.

[0023] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. An iodine working fluid storage tank that is not easily blocked, characterized in that, The iodine working medium storage box that is not easily blocked includes: an outer casing, a ceramic heating sleeve, a box cover, a delivery pipe, and a solenoid valve. The outer casing is made of a rigid heat-insulating medium. The ceramic heating sleeve is sleeved inside the outer casing to form a receiving cavity for the iodine working medium. The top end of the ceramic heating sleeve is flush with the top end of the outer casing. The box cover is hermetically fixed on the opening of the iodine working medium receiving cavity. A through hole is provided at the center of the box cover, and a three-stage continuous circular groove is provided around the through hole. The delivery pipe penetrates into the through hole, and the end extends into the third-stage groove in the three-stage continuous circular groove. A flange head matching the diameter of the third-stage groove is provided at the end position of the delivery pipe. A ceramic filter is installed between the flange head and the bottom of the third-stage groove. The sum of the thickness of the flange head and the thickness of the ceramic filter is equal to the depth of the third-stage groove. A sealing sheet is installed in the second-stage groove of the three-stage continuous circular groove, and a pressing sheet is installed in the first-stage groove of the three-stage continuous circular groove. A steam filter plate is installed below the through hole. The solenoid valve is installed on the part of the delivery pipe extending outside the box cover.

2. The non-blocking iodine working medium storage tank according to claim 1, wherein A vacuum insulation layer is provided inside the outer casing.

3. The iodine working fluid storage tank that is not easily blocked according to claim 1, wherein External threads are provided on the outer side of the top end of the outer casing. A pressing eaves and a boss are provided at the bottom of the box cover. The pressing eaves cover the top end of the outer casing. Internal threads matching the external threads are provided on the inner side of the pressing eaves. The outer diameter of the boss matches the inner diameter of the ceramic heating sleeve. A sealing groove is defined by the boss and the pressing eaves together, and a sealing gasket is installed at the bottom of the sealing groove.

4. The non-cloggable iodine working medium storage tank according to claim 3, characterized in that, Tightening threaded holes are further provided on the pressing eaves, and tightening screws are installed in the tightening threaded holes.

5. The non-cloggable iodine working medium storage tank according to claim 1, characterized in that, The ceramic filter includes a ceramic filter element and a ceramic heating coil. The ceramic filter element and the ceramic heating coil have the same thickness. The diameter of the ceramic filter element is the same as the inner diameter of the delivery pipe. The ceramic heating coil is sleeved on the ceramic filter element, and the outer diameter of the ceramic heating coil matches the diameter of the third-stage groove.

6. The non-blocking iodine working medium storage tank according to claim 1, characterized in that, A pressure sensor is further installed on the box cover, and the sensing end of the pressure sensor is installed in the gap between the steam filter plate and the box cover.

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