An iodine recovery structure for iodine working medium electric propulsion equipment

Abstract

The invention discloses an iodine recovery structure for an iodine working medium electric propulsion device, and relates to the technical field of iodine working medium electric propulsion devices, including a vacuum working chamber, a condenser and a vacuum pump connected in sequence, an iodine vapor release structure, an iodine condensation collection structure and a heating structure are provided in the vacuum working chamber, the iodine vapor release structure is located in the iodine condensation collection structure, and the heating structure is located between the vacuum working chamber and the iodine condensation collection structure. The present invention uses an iodine condensation collection structure to capture iodine vapor, and in the intermittent period after the iodine working medium test is completed, the iodine condensed on the iodine condensation collection structure is gasified and recovered by the heating structure, and iodine is compressed and condensed in advance before entering the vacuum pump by the condenser, thereby greatly improving the recovery efficiency of iodine and effectively protecting the vacuum pump system.

Description

Technical Field

[0001] The present invention relates to the technical field of iodine working medium electric propulsion equipment, in particular to an iodine recovery structure of iodine working medium electric propulsion equipment. Background Art

[0002] The working principle of iodine-based electric propulsion equipment: In a vacuum working chamber, an iodine source is used through high-energy ionization to generate an iodine plasma flame, thereby generating propulsion in a vacuum. At present, iodine-based electric propulsion equipment produces a large amount of iodine vapor during operation, which will diffuse and condense into the vacuum working chamber wall and vacuum pump. The corrosiveness of iodine will have a destructive effect on the equipment, resulting in poor equipment operation failure rate and stability. Summary of the Invention

[0003] The purpose of the present invention is to provide an iodine recovery structure for an iodine working medium electric propulsion device, which adopts an iodine condensation collection structure to capture iodine vapor. In the interval after the iodine working medium test is completed, the iodine condensed on the iodine condensation collection structure is vaporized and recovered by a heating structure. The iodine is compressed and condensed in advance before entering the vacuum pump through a condenser, thereby greatly improving the iodine recovery efficiency and effectively protecting the vacuum pump system.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides an iodine recovery structure for an iodine working medium electric propulsion device, comprising a vacuum working chamber, a condenser and a vacuum pump connected in sequence, wherein an iodine vapor release structure, an iodine condensate collection structure and a heating structure are provided in the vacuum working chamber, the iodine vapor release structure is located in the iodine condensate collection structure, and the heating structure is located between the vacuum working chamber and the iodine condensate collection structure.

[0006] Preferably, the iodine condensation collection structure includes an iodine condensation collection chamber and a condenser pipe. The condenser pipe is arranged outside the iodine condensation collection chamber and in contact with the iodine condensation collection chamber. The condenser pipe is used to pass a cooling medium.

[0007] Preferably, the outlet of the iodine condensation collection structure is connected to the condenser.

[0008] Preferably, the heating structure and the iodine condensation collection structure are arranged in parallel.

[0009] Preferably, the heating structure comprises a resistance wire, an insulating layer and a metal layer arranged in sequence from the inside to the outside.

[0010] Preferably, the condenser includes a shell and a compression structure, the shell is provided with a cooling channel, the compression structure is located in the shell, the compression structure includes a driving structure and a plurality of rotating blades, the shell is provided with an air intake and an air exhaust, the air intake and the air exhaust are both connected to the interior of the shell, as the driving structure drives the movement of the rotating blades, the space between adjacent rotating blades gradually decreases from the air intake to the exhaust.

[0011] Preferably, the compression structure further includes an eccentric rotor, a plurality of rotating blades are arranged along the circumference of the eccentric rotor, and the driving structure is used for driving the eccentric rotor to rotate.

[0012] Preferably, one end of each rotating blade contacts the inner wall of the housing, and an elastic element is provided between the other end of each rotating blade and the eccentric rotor.

[0013] Preferably, the air intake port and the air exhaust port are arranged opposite to each other.

[0014] Preferably, the housing is further provided with an oil filling port and an oil draining port, the oil filling port and the oil draining port are arranged opposite to each other, and both the oil filling port and the oil draining port are communicated with the interior of the housing.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] The present invention adopts an iodine condensation collection structure to capture iodine vapor. In the interval after the iodine working medium test is completed, the iodine condensed on the iodine condensation collection structure is vaporized and recovered through the heating structure. The iodine is compressed and condensed in advance before entering the vacuum pump through the condenser, which greatly improves the iodine recovery efficiency and effectively protects the vacuum pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the iodine recovery structure of the iodine working medium electric propulsion equipment of the present invention;

[0019] Figure 2 It is a schematic diagram of a condenser of the present invention;

[0020] Among them: 1-shell, 2-cooling channel, 3-rotating blade, 4-elastic element, 5-air intake, 6-exhaust, 7-oil filling port, 8-oil drain port, 9-eccentric rotor, 10-vacuum working chamber, 11-vacuum pump, 12-iodine vapor release structure, 13-iodine condensate collection chamber, 14-condenser, 15-heating structure. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide an iodine recovery structure for an iodine working medium electric propulsion device, which adopts an iodine condensation collection structure to capture iodine vapor. In the interval after the iodine working medium test is completed, the iodine condensed on the iodine condensation collection structure is vaporized and recovered by a heating structure. The iodine is compressed and condensed in advance before entering the vacuum pump through a condenser, thereby greatly improving the iodine recovery efficiency and effectively protecting the vacuum pump system.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 2 As shown: This embodiment provides an iodine recovery structure for an iodine working medium electric propulsion device, comprising a vacuum working chamber 10, a condenser and a vacuum pump 11 connected in sequence, wherein an iodine vapor release structure 12, an iodine condensation collection structure and a heating structure 15 are provided in the vacuum working chamber 10, the iodine vapor release structure 12 is used to hold an iodine source and release iodine vapor, the iodine vapor release structure 12 is located in the iodine condensation collection structure, and the heating structure 15 is located between the vacuum working chamber 10 and the iodine condensation collection structure.

[0025] Specifically, in this embodiment, the iodine condensation collection structure includes an iodine condensation collection bin 13 and a condenser 14. The outlet (diameter is 80 mm) of the iodine condensation collection bin 13 is connected to the condenser. The iodine condensation collection bin 13 is made of stainless steel. The condenser 14 is arranged on the outside of the iodine condensation collection bin 13 and in contact with the iodine condensation collection bin 13. The condenser 14 is a copper tube. The condenser 14 is used to pass a cooling medium at minus 60°C. The cooling medium is driven by the refrigeration unit to circulate and cool in real time.

[0026] Since the pressure of the iodine working medium electrically propulsion vacuum working chamber 10 is usually in the order of 0.001 to 0.01 Pa, and the temperature of the vacuum working chamber 10 is 30 to 50°C, the iodine vapor partial pressure is very low and it is difficult to reach the iodine saturated vapor pressure at this temperature, which makes it difficult for the iodine vapor to be efficiently condensed near room temperature. In this embodiment, the iodine vapor in the vacuum working chamber 10 is condensed and captured by the iodine condensation collection structure, so that the iodine saturated vapor pressure at the refrigeration temperature is close to the working pressure of the vacuum working chamber 10, thereby reducing the temperature of the iodine condensation space and allowing the iodine vapor to be efficiently condensed.

[0027] In the present embodiment, the heating structure 15 is arranged in parallel with the iodine condensation collection structure. The heating structure 15 includes a resistance wire, an insulating layer and a metal layer arranged sequentially from the inside to the outside. It has the advantages of being flexible, clean and having a fast heating speed, and the heating temperature is 300°C. When the iodine working medium ignites the test working state, the iodine vapor is adsorbed and collected on the iodine condensation collection chamber 13. During the interval after the iodine working medium test is completed, the iodine condensation collection chamber 13 is subjected to radiation heating by the heating structure 15. The iodine on the iodine condensation collection chamber 13 is gasified and recovered in the condenser, reducing the pollution to the vacuum working chamber 10 and its heat conduction effect on the condenser. At this moment, the condenser tube 14 does not refrigerate.

[0028] In this embodiment, the condenser includes a shell 1 and a compression structure. The shell 1 is a double-layer structure. The cooling channel 2 is located in the double-layer structure. The cooling channel 2 is used to pass a cooling medium. The compression structure is located in the shell 1. The compression structure includes a driving structure, an eccentric rotor 9 and a plurality of rotating blades 3. The driving structure can be a motor. The driving structure is used to drive the eccentric rotor 9 to rotate. The plurality of rotating blades 3 are arranged along the circumference of the eccentric rotor 9. One end of each rotating blade 3 contacts the inner wall of the shell 1 during rotation, so that adjacent rotating blades 3 and the shell 1 between them form a sealed environment. An elastic element 4 is provided between the other end of each rotating blade 3 and the eccentric rotor 9. The elastic element 4 is preferably a spring; the shell 1 is provided with an air intake 5 and an exhaust port 6. The air intake 5 and the exhaust port 6 are arranged opposite to each other. The air intake 5 and the exhaust port 6 are both connected to the interior of the shell 1. As the driving structure drives the movement of the rotating blades 3, the space between adjacent rotating blades 3 gradually decreases from the air intake 5 to the exhaust port 6. The gas enters between adjacent rotating blades 3 from the air inlet 5. As the rotating blades 3 move, the space formed between the adjacent rotating blades 3 and the shell 1 gradually decreases. In this process, the gas is pressurized, and as the gas contacts and cools the shell 1, pressurized condensation of the gas is also achieved.

[0029] In this embodiment, the housing 1 is further provided with an oil inlet 7 and an oil outlet 8. The oil inlet 7 and the oil outlet 8 are arranged opposite each other, and the oil outlet 8 is located at the bottom end of the housing 1. Both the oil inlet 7 and the oil outlet 8 are connected to the interior of the housing 1. Lubricating grease is vacuum oil or silicone oil. The lubricating grease enters the housing 1 through the oil inlet 7 to reduce friction during the rotation of the rotating blades 3 and can be discharged along with the condensate.

[0030] The condenser in this embodiment adopts a volume compression method to allow the iodine vapor to generate volume compression in the vacuum pipe between the condenser and the vacuum pump 11 to increase the iodine vapor pressure, so that the iodine is pressurized in advance before entering the vacuum pump 11 to complete high-efficiency condensation at low temperature and high pressure. The iodine is captured, condensed and collected by the condenser, which greatly improves the iodine recovery efficiency and effectively protects the vacuum pump 11 system.

[0031] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An iodine recovery structure for an iodine working medium electric propulsion device, characterized by: The invention comprises a vacuum working chamber, a condenser and a vacuum pump connected in sequence, wherein an iodine vapor releasing structure, an iodine condensation collecting structure and a heating structure are provided in the vacuum working chamber, the iodine vapor releasing structure is located in the iodine condensation collecting structure, and the heating structure is located between the vacuum working chamber and the iodine condensation collecting structure; The outlet of the iodine condensation collection structure is connected to the condenser; The condenser includes a shell and a compression structure, the shell is provided with a cooling channel, the compression structure is located in the shell, the compression structure includes a drive structure and a plurality of rotating blades, the shell is provided with an air intake and an air exhaust, both the air intake and the air exhaust are connected to the interior of the shell, as the drive structure drives the movement of the rotating blades, the space between adjacent rotating blades gradually decreases from the air intake to the exhaust.

2. The iodine recovery structure of the iodine working medium electric propulsion equipment according to claim 1, characterized in that: The iodine condensation collection structure includes an iodine condensation collection chamber and a condensation pipe. The condensation pipe is arranged outside the iodine condensation collection chamber and contacts the iodine condensation collection chamber. The condensation pipe is used to pass a cooling medium.

3. The iodine recovery structure of the iodine working medium electric propulsion device according to claim 1, characterized in that: The heating structure is arranged in parallel with the iodine condensation collection structure.

4. The iodine recovery structure of the iodine working medium electric propulsion device according to claim 1, characterized in that: The heating structure comprises a resistance wire, an insulating layer and a metal layer which are sequentially arranged from the inside to the outside.

5. The iodine recovery structure of the iodine working medium electric propulsion equipment according to claim 1, characterized in that: The compression structure further includes an eccentric rotor, a plurality of rotating blades are arranged along the circumference of the eccentric rotor, and the driving structure is used for driving the eccentric rotor to rotate.

6. The iodine recovery structure of the iodine working medium electric propulsion device according to claim 5, characterized in that: One end of each rotating blade contacts the inner wall of the shell, and an elastic element is provided between the other end of each rotating blade and the eccentric rotor.

7. The iodine recovery structure of the iodine working medium electric propulsion device according to claim 1, characterized in that: The air intake port and the air exhaust port are arranged opposite to each other.

8. The iodine recovery structure of the iodine working medium electric propulsion device according to claim 1, characterized in that: The housing is further provided with an oil filling port and an oil draining port, the oil filling port and the oil draining port are arranged opposite to each other, and both the oil filling port and the oil draining port are communicated with the interior of the housing.

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