A manned spacecraft microbial prevention and control device and method

Abstract

The present application relates to a kind of manned spacecraft microbial prevention and control device and method, including air pipe, replacement rod, reverse buckle, charge and exhaust console, clean gas source;Replacement rod adopts telescopic hollow fishing rod structure, reverse buckle is installed at the preset position of air pipe end, air pipe is inserted into the hollow cavity of replacement rod handheld end, and from the end of replacement rod fully deployed, make one end of reverse buckle fixed at the end of air pipe, the other end is stuck in the end of replacement rod, guarantee that air pipe can only move in one direction, air pipe after being connected with replacement rod is deeply inserted into the bottom end of cabin;Charge and exhaust console is set outside the cabin, air inlet is connected with clean gas source, air outlet is connected with air pipe, the pressure and flow of clean air are adjusted by charge and exhaust console, gradually make clean air inject into cabin, contaminated air in cabin is discharged outside the cabin, realize that air in cabin is purified.The problem that the number of air microorganisms in manned spacecraft before launch is more, and cabin is not fully purified is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of spacecraft cabin purification, and relates to a manned spacecraft microbial prevention and control device and method. BACKGROUND

[0002] The sealed cabin of a manned spacecraft is suitable for the long-term residence of people, and also provides a good breeding ground for microorganisms. Microorganisms are ubiquitous in the environment in which they survive. When the spacecraft is launched, they will be carried into the cabin of the manned spacecraft along with the spacecraft, astronauts and cargo. In the sealed environment of the spacecraft, they will be affected by the special space environment, such as radiation and microgravity. These factors can cause the microorganisms to mutate, resulting in changes in their characteristics and secretions, thereby enhancing their impact on the safety of the environment in the cabin of the manned spacecraft and the health of the astronauts.

[0003] Due to the limited means of processing microorganisms in orbit, the air in the cabin needs to be thoroughly cleaned before the launch of the manned spacecraft. Due to the complex layout structure of the manned spacecraft and the presence of many sensitive materials inside the spacecraft, methods such as ultraviolet irradiation and hydrogen peroxide vapor cannot be used for cleaning. In addition, the complexity of the structure makes it impossible for personnel to access many parts. Therefore, it is necessary to develop an air microbial purification method that meets the requirements of microbial control before launch and is consistent with the AIT conditions of Chinese spacecraft. SUMMARY

[0004] The technical problem solved by the present application is to overcome the shortcomings of the prior art and provide a manned spacecraft microbial prevention and control device and method to solve the problem of a large number of air microorganisms in the manned spacecraft before launch and insufficient cabin purification.

[0005] The technical solution of the present application is a manned spacecraft microbial prevention and control device, comprising an air pipe, a displacement rod, a reverse buckle, a charging and exhausting control console and a clean gas source.

[0006] The displacement rod adopts a telescopic hollow fishing rod structure. The reverse buckle is installed at a preset position at the end of the air pipe. The air pipe is inserted into the hollow cavity of the hand-held end of the displacement rod and passes out from the fully expanded end of the displacement rod, so that one end of the reverse buckle is fixed at the end of the air pipe and the other end is stuck at the end of the displacement rod. This ensures that the air pipe can only move in one direction and avoids the air pipe from retracting during displacement. The air pipe connected to the displacement rod is deeply inserted into the bottom end of the cabin.

[0007] The charging and exhausting control console is arranged outside the cabin. The air inlet is connected to the clean gas source, and the air outlet is connected to the air pipe. The pressure and flow of clean air are adjusted by the charging and exhausting control console to gradually inject clean air into the cabin. The contaminated air in the cabin is exhausted outside the cabin, and the air in the sealed cabin is purified.

[0008] Further, the reverse buckle is divided into two parts, one part is the center two half-cylindrical metal sheets, and the other part is the elastic and outwardly expandable metal buckle, the two half-cylindrical metal sheets are fixed in the ventilation pipe and rely on the nylon strap for pressing, and the cylindrical inner surface is pasted with a rubber gasket to increase the friction between the buckle and the ventilation pipe; the buckle on the outside of the half-cylindrical metal sheet is integrally connected with the half-cylindrical metal sheet, the buckle is a thin elastic metal sheet, the end of the metal sheet is bent at an acute angle of θ°, under the condition of pressure, the metal sheet is in a folded state, and after losing the pipeline pressure, the metal sheet is in a springing state, and the angle formed by the center cylindrical part after springing is 2θ°; when the buckle is stretched out to replace the rod and is pulled tightly in the reverse direction, the buckle is locked to play a fixing role.

[0009] Further, the angle θ is 10°-15°.

[0010] Further, the reverse buckle is installed at the end of the ventilation pipe 7-12 cm.

[0011] Further, the ventilation pipe is a PE pipe.

[0012] Further, the pipeline of the gas charging and discharging console controls the gas pressure range to be 0-42 Mpa, and two high-pressure ball valves are provided.

[0013] A manned spacecraft microbial prevention and control method, comprising the following steps:

[0014] Connect the clean gas source with the gas inlet of the gas charging and discharging console, connect the ventilation pipe with the gas outlet of the gas charging and discharging console, and adjust the pressure of the clean gas source;

[0015] Install a reverse buckle at the end of the ventilation pipe, insert the ventilation pipe into the hollow cavity from the handheld end of the replacement rod, open the replacement rod completely, pull out the end of the ventilation pipe from the end of the replacement rod, then pull the ventilation pipe backward, and lock the reverse buckle at the end of the replacement rod;

[0016] Keep the cabin door in a virtual closed state to ensure that the gas can normally escape from the cabin, open the gas charging and discharging console to replace the gas, and control the replacement time;

[0017] After the replacement is completed, the ventilation pipe is used to extract the gas in the cabin for microbial detection, the effect of gas replacement is determined, and the replacement rod is pulled out of the cabin.

[0018] Further, the adjustment of the pressure of the clean gas source is specifically: the pressure is controlled to be 2-3 MPa, and the flow is controlled to be 0.8-1 m 3 / min.

[0019] Further, the determination method of the replacement time is: replacement time = cabin volume * 3 / gas flow.

[0020] The beneficial effects of the present application compared with the prior art are:

[0021] The present application avoids the pollution link of personnel entering the cabin to place equipment, and makes the air purification in the cabin body and the detection of the purification effect use one set of device to complete. Meanwhile, through the low-speed gas replacement mode, the gas in the deep crevice in the cabin can be slowly driven out and replaced with clean gas, so that the effective purification of the cabin gas and the effective prevention and control of air microorganisms are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A schematic diagram of a manned spacecraft microbial prevention and control device is provided.

[0023] Figure 2 A schematic diagram of a gas vent pipe end reverse buckle is provided. DETAILED DESCRIPTION

[0024] The present application will be further described below in conjunction with the drawings and examples.

[0025] Example 1

[0026] The present application provides a manned spacecraft microbial prevention and control device, which includes a vent pipe, a replacement rod, a reverse buckle, a charging and exhausting control console, and a clean gas source.

[0027] The replacement rod adopts a telescopic hollow fishing rod structure, the reverse buckle is installed at a preset position at the end of the vent pipe, the vent pipe is inserted into the hollow cavity at the handheld end of the replacement rod and passes out from the fully expanded end of the replacement rod, so that one end of the reverse buckle is fixed at the end of the vent pipe and the other end is stuck at the end of the replacement rod, ensuring that the vent pipe can only move in one direction and avoiding the vent pipe from retracting during replacement, which affects the gas replacement effect. The vent pipe connected with the replacement rod is deeply inserted into the bottom end of the cabin body.

[0028] The charging and exhausting control console is arranged outside the cabin, the air inlet is connected with the clean gas source, and the air outlet is connected with the vent pipe. The pressure and flow of the clean air are adjusted through the charging and exhausting control console, the clean air is gradually injected into the cabin, the contaminated air in the cabin is exhausted outside the cabin, and the purpose of purifying the air in the sealed cabin is achieved.

[0029] In this embodiment, the ventilation pipe is made of PE pipe, and the reverse buckle is installed at the end of the ventilation pipe 10 cm away. The reverse buckle is designed as follows: the reverse buckle is divided into two parts, one part is the center of two half-cylindrical metal sheets, and the other part is a metal buckle that can be expanded outwardly. The two half-cylindrical metal sheets are fixed on the PE pipe by nylon straps under pressure. The cylindrical inner surface is pasted with a small circular rubber pad with a diameter of 2 mm to increase the friction between the buckle and the PE pipe. The buckle on the outside of the half-cylindrical metal sheet is integrally connected with the half-cylindrical metal sheet. The buckle is a thin elastic metal sheet, and the end of the metal sheet is bent at an acute angle of 15 degrees. Under pressure, the metal sheet is in a folded state, and after losing the pressure of the pipeline, it is in a state of springing open, and the angle formed with the center cylindrical part after springing open is 30 degrees. When the buckle is stretched to replace the rod and pulled tightly, it will be stuck with the help of the buckle, playing a fixing role.

[0030] The pipeline of the gas charging and discharging console controls the gas pressure range of 0-42Mpa, and has two high-pressure ball valves.

[0031] The embodiment also provides a manned spacecraft microbial prevention and control method, including the following processes:

[0032] 1) Connect the clean gas source with the gas inlet of the gas charging and discharging console, connect the ventilation pipe with the gas outlet of the gas charging and discharging console, adjust the pressure of the clean gas source, control the pressure at 2MPa, and control the flow at 0.8m 3 / min. Low pressure has low displacement efficiency, and high pressure is easy to cause turbulent airflow in the cabin.

[0033] 2) Install the reverse buckle at the end of the ventilation pipe 10 cm away, insert the ventilation pipe into the hollow cavity from the hand-held end of the replacement rod, open the replacement rod, pull out the end of the ventilation pipe from the end of the replacement rod, then pull the ventilation pipe backward, and the reverse buckle is stuck in the end of the replacement rod.

[0034] 3) Keep the cabin door in a virtual state to ensure that the gas can normally escape from the cabin, open the gas charging and discharging console for gas replacement, and the replacement time is determined by two factors, one is the volume of the cabin, and the other is the gas flow. In this embodiment, the replacement time is determined as follows: replacement time = cabin volume * 3 / gas flow.

[0035] 4) After the replacement is completed, the ventilation pipe is directly used to extract the cabin gas for microbial detection to determine the effect of gas replacement.

[0036] 5) The replacement rod is pulled out of the cabin, and personnel do not need to enter the cabin, reducing the damage to the clean environment in the cabin.

[0037] The present application can reduce the cabin pollution caused by personnel entering the cabin, and realize the gas purification of the unreachable area.

[0038] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents without departing from the spirit and scope of the present application.

[0039] The contents not described in detail in the specification of the present application are the known technology of the person skilled in the art.

Claims

1. A manned spacecraft microbial prevention and control device, characterized in that, The air pipe, the replacement rod, the reverse buckle, the air charging and discharging console and the clean air source are included. The replacement rod is in the telescopic hollow fishing rod structure, the reverse buckle is installed at the preset position of the air pipe end, the air pipe is inserted into the hollow cavity of the hand-held end of the replacement rod and is pulled out from the fully expanded end of the replacement rod, so that one end of the reverse buckle is fixed at the air pipe end and the other end is locked at the replacement rod end, which ensures that the air pipe can only move in one direction and avoids the air pipe from being retracted during replacement. The air charging and discharging console is arranged outside the cabin, the air inlet is connected with the clean air source, the air outlet is connected with the air pipe, the pressure and flow of the clean air are adjusted through the air charging and discharging console, the clean air is gradually injected into the cabin, the contaminated air in the cabin is discharged outside the cabin, and the air in the sealed cabin is purified.

2. The device according to claim 1, wherein the device is characterized by, The reverse buckle is divided into two parts, one part is the central two half-cylindrical metal sheets, and the other part is the elastic metal buckle which can be expanded outwardly, the two half-cylindrical metal sheets are fixed at the air pipe end by nylon straps, the rubber gasket is attached to the inner surface of the cylindrical metal sheets to increase the friction between the buckle and the air pipe, the buckle on the outer side of the half-cylindrical metal sheets is integrally connected with the half-cylindrical metal sheets, the buckle is a thin elastic metal sheet, the end of the metal sheet is bent at an acute angle of θ°, under the pressure, the metal sheet is in the folded state, and after losing the pipeline pressure, the metal sheet is in the expanded state, and the angle formed by the expanded metal sheet and the central cylindrical part is 2θ°, when the buckle is pulled out of the replacement rod and is pulled back tightly, the buckle is locked to play a fixing role.

3. The device according to claim 2, wherein the device is characterized by, The angle θ is 10°-15°.

4. The device according to claim 1, wherein the device is characterized by, The reverse buckle is installed at the end of the air pipe 7cm-12cm.

5. The device according to claim 1, wherein the device is characterized by, The air pipe is made of PE pipe.

6. The device according to claim 1, wherein the device is characterized by, The pipeline control gas pressure range of the air charging and discharging console is 0-42Mpa, and two high-pressure ball valves are provided.

7. A method for preventing and controlling microorganisms in a manned spacecraft based on the device according to any one of claims 1 to 6, characterized in that, The following steps are included: The clean air source is connected with the air inlet of the air charging and discharging console, the air pipe is connected with the air outlet of the air charging and discharging console, and the pressure of the clean air source is adjusted; The reverse buckle is installed at the end of the air pipe, the air pipe is inserted into the hollow cavity of the hand-held end of the replacement rod, the replacement rod is fully opened, the end of the air pipe is pulled out of the end of the replacement rod, then the air pipe is pulled back, and the reverse buckle is locked at the end of the replacement rod; The cabin door is in the virtual closed state, the gas can normally escape from the cabin, the air charging and discharging console is opened to replace the gas, and the replacement time is controlled; After the replacement is completed, the gas in the cabin is extracted through the air pipe for microbial detection, the effect of the gas replacement is determined, and the whole replacement rod is pulled out of the cabin.

8. The method of claim 7, wherein the microorganism is a bacterium. The clean gas source pressure is adjusted, specifically, the pressure is controlled at 2-3 MPa, and the flow is controlled at 0.8-1 m 3 / min.

9. The method of claim 7, wherein the microorganism control method is for a manned spacecraft. The replacement time is determined in the following manner: replacement time=cabin volume*3 / gas flow.

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