CN107570220B

CN107570220B - Cabin capable of forming low-pressure environment

Info

Publication number: CN107570220B
Application number: CN201610850440.5A
Authority: CN
Inventors: 徐斌
Original assignee: Jilin Ecare Medical Technology Co ltd
Current assignee: Jilin Ecare Medical Technology Co ltd
Priority date: 2016-09-26
Filing date: 2016-09-26
Publication date: 2024-04-26
Anticipated expiration: 2036-09-26
Also published as: CN107570220A

Abstract

The invention provides a cabin capable of forming a low-pressure environment, which comprises a cabin body formed by connecting a plurality of frame bodies in series, wherein end plates are arranged at two ends of the cabin body, and a plurality of casters are arranged at the bottom of the cabin body; the cabin body is provided with an air inlet pipe, a first exhaust pipe and a second exhaust pipe, and is provided with a through hole; the device also comprises a main controller, a vacuum pump, a main air pipe and a pressure detector; the vacuum pump is communicated with one end of the main air pipe, the first air exhaust pipe and the second air exhaust pipe are communicated with the other end of the main air pipe, the main air pipe is provided with a main valve, the air inlet pipe is provided with a first electromagnetic valve, the first air exhaust pipe is provided with a second electromagnetic valve, the second air exhaust pipe is provided with a proportional valve, and the pressure detector, the first electromagnetic valve, the second electromagnetic valve and the proportional valve are electrically connected with the main controller. The invention controls the vacuum pressure in the cabin body through a plurality of pipelines and detects the vacuum pressure in real time. In addition, the invention has reasonable structure and reliable operation.

Description

Cabin capable of forming low-pressure environment

Technical Field

The present invention relates to a chamber capable of forming a low-pressure environment.

Background

The low-pressure cabin is a device capable of forming a low-pressure anoxic environment, the low-pressure anoxic state in the cabin is caused by the air extractor, the air pressure in the cabin can be regulated according to the requirement, the high-altitude environment is simulated, and the anoxic endurance of people at different altitudes is tested; especially for mountain climbing lovers and soldiers, the high altitude environment can be experienced by the mountain climbing lovers and soldiers at low altitudes.

Currently, with the improvement of the technology level and the change of the research direction, researchers find that the low pressure cabin not only can simulate the high altitude environment, but also has a plurality of benefits for the human body by frequently using the low pressure cabin, such as improving the oxygen carrying function of vascular tissues, improving the cardiopulmonary function and the like.

Because the prior low-pressure cabin is not widely applied, the structural characteristics of the low-pressure cabin are designed for professionals and soldiers, and the protection measures and some structures are not perfect.

Disclosure of Invention

The invention aims to solve the technical problem of providing a cabin which is reasonable in structure and reliable in work and can form a low-pressure environment so as to overcome the defects in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme: the cabin capable of forming the low-pressure environment comprises a cabin body, wherein end plates are arranged at two ends of the cabin body, the cabin body is formed by connecting a plurality of frame bodies in series, and at least four casters are arranged at the bottom of the cabin body; the cabin body is provided with an air inlet pipe, a first exhaust pipe and a second exhaust pipe, and is provided with a through hole; the device also comprises a main controller, a vacuum pump, a main air pipe and at least one pressure detector; the vacuum pump is communicated with one end of the main air pipe, the first air exhaust pipe and the second air exhaust pipe are communicated with the other end of the main air pipe, the main air pipe is provided with a main valve, the air inlet pipe is provided with a first electromagnetic valve, the first air exhaust pipe is provided with a second electromagnetic valve, the second air exhaust pipe is provided with a proportional valve, and the pressure detector, the first electromagnetic valve, the second electromagnetic valve and the proportional valve are electrically connected with the main controller.

Preferably, a protection air pipe is arranged on the cabin body, a third electromagnetic valve is arranged on the protection air pipe, and the third electromagnetic valve is electrically connected with the controller.

Preferably, the cabin body is provided with a first air supplementing pipe, and a part of the first air supplementing pipe outside the cabin body is provided with a manual valve.

Further, a second air supplementing pipe is arranged on the cabin body, and a manual valve is arranged at the part of the second air supplementing pipe inside the cabin body.

Preferably, two air inlet pipes are arranged on the cabin body.

Preferably, the two end edges of the frame body are respectively bent outwards to form annular flanges, the edges of the annular flanges are bent towards the same side to form folded edges, the annular flanges between the adjacent frame bodies are close together, the folded edges are stacked together, the annular flanges between the adjacent frame bodies are connected through connecting pieces, and sealing strips are arranged between the adjacent annular flanges.

Further, the two end edges of the frame body are respectively bent outwards by 90 degrees to form annular flanges; the edge of the annular flange on the frame body is bent to the same side by 90 degrees to form the folded edge.

Preferably, the casters are mounted at the bottom of the cabin through a mounting frame, and the casters can protrude out of the bottom surface of the cabin through a lifting device mounted on the cabin.

Preferably, the cabin is internally provided with an oxygen concentration detector, a carbon dioxide concentration detector, a relative humidity detector and a temperature detector; the oxygen concentration detector, the carbon dioxide concentration detector, the relative humidity detector and the temperature detector are all electrically connected with the main controller.

Preferably, an alarm is also included in electrical communication with the master controller.

As described above, the cabin capable of forming a low-pressure environment has the following beneficial effects:

The invention controls the vacuum pressure in the cabin body through a plurality of pipelines and detects the vacuum pressure in real time. In addition, the invention is also provided with a protection air pipe, a first air supplementing pipe and a second air supplementing pipe, when the equipment is powered off, the protection air pipe is automatically conducted, and manual valves can be manually opened respectively inside and outside the cabin body, so that the pressure and the oxygen concentration in the cabin are rapidly improved, and the protection is formed for users in the cabin. Moreover, three air pipes can be opened according to different conditions, so that multiple protections are formed.

The lifting casters are arranged at the bottom of the cabin body, so that the whole cabin is convenient to move and stand, and the base plate is arranged at the bottom of the cabin body, so that the cabin body is protected, and the ground on which the cabin body is placed is also protected. The casters retract in the non-use state, so that the occupation of space is reduced, the casters are not affected by external force, and the service life is ensured. In addition, according to needs, the truckle can adopt a plurality of universal truckles or all adopt the universal truckle, improves the flexibility when removing.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic diagram of a control portion of the present invention.

Fig. 3 is a partial cross-sectional view of fig. 1.

FIG. 4 is a cross-sectional view taken at A-A in FIG. 1.

Fig. 5 is an enlarged sectional view at B in fig. 1.

Fig. 6 is a side view of the present invention.

Fig. 7 is an enlarged view at C in fig. 6.

In the figure:

1. Cabin 10, end plate

11. Through hole 12, cabin

13. Cabin door 14 and frame

141. Annular flange 142, hem

15. Connecting piece 16, sealing strip

17. Viewing window 21, air inlet pipe

211. First solenoid valve 22, first exhaust pipe

221. Second solenoid valve 23, second exhaust pipe

231. Proportional valve 24, protective air pipe

241. Third electromagnetic valve 25, first air supply pipe

251. Manual valve 26, second air supply pipe

261. Manual valve 3 and main controller

31. Auxiliary controller 4, vacuum pump

5. Main air pipe 51 and main valve

6. Pressure detector 7, castor

71. Mounting frame 72 and lifting device

73. Backing plate 74, guiding structure

81. Oxygen concentration detector 82 and carbon dioxide concentration detector

83. Relative humidity detector 84, temperature detector

85. Alarm 86, accumulator

87. Interphone

Detailed Description

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the disclosure of the present invention, and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the terms of modification, variation of proportions, or adjustment of sizes, without affecting the efficacy or achievement of the present invention, should be understood as falling within the scope of the present invention. Also, the terms such as "upper", "lower", "front", "rear", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the invention for which the invention may be practiced or for which the relative relationships may be altered or modified without materially altering the technical context.

When the cabin is used, the vacuum pump is matched with the air extractor, and the cabin is connected with the vacuum pump through a pipeline, and when the cabin is used, the vacuum pump is used for vacuumizing the cabin, so that the pressure and the oxygen content in the cabin are reduced, and a low-pressure anoxic environment is formed in the cabin. Meanwhile, a pressure sensor and a vacuum pump are arranged in the cabin and are electrically connected with a controller, and the pressure in the cabin is detected in real time through the pressure sensor, so that a user can adjust the pressure in the cabin in time through the controller.

Referring to fig. 1, the cabin capable of forming a low-pressure environment comprises a cabin body 1, wherein end plates 10 are arranged at two ends of the cabin body 1, the cabin body 1 is formed by connecting a plurality of frame bodies 14 in series, a cabin 12 is arranged in the cabin body 1, and a cabin door 13 is arranged on the cabin body 1. At least four casters 7 are provided at the bottom of the cabin 1 to facilitate the overall movement. The air path system comprises an air inlet pipe 21, a first air exhaust pipe 22 and a second air exhaust pipe 23 which are arranged on the cabin body 1, wherein a through hole 11 is formed in the cabin body 1, and the through hole 11 always keeps the cabin 12 communicated with the outside. Referring to fig. 1 and 2, the gas circuit system further comprises a main controller 3, a vacuum pump 4, a main gas pipe 5 and at least one pressure detector 6. The vacuum pump 4 is communicated with one end of the main air pipe 5, the first air extraction pipe 22 and the second air extraction pipe 23 are both communicated with the other end of the main air pipe 5, and the main air pipe 5 is provided with a main valve 51. The air inlet pipe 21 is provided with a first electromagnetic valve 211, the first air exhaust pipe 22 is provided with a second electromagnetic valve 221, and the second air exhaust pipe 23 is provided with a proportional valve 231. The pressure detector 6, the first solenoid valve 211, the second solenoid valve 221 and the proportional valve 231 are all electrically connected to the main controller 3. The main controller 3 in this embodiment includes an input module, an output module, and a PLC. The valve port of the proportional valve 231 can be opened at any opening degree according to the requirement, so that the size of the passing medium flow is controlled, and the opening degree of the valve port is controlled by a PLC (programmable logic controller) in the main controller 3 through an output module. The cabin body 1 is provided with an observation window 17, and the observation window 17 is made of toughened glass.

Referring to fig. 1-3, taking an example of presetting the environment of the cabin 12 to an altitude of 1500 meters, the working principle of the air path system in the present invention is as follows:

(1) The user enters the cabin 12, closes the cabin door 13, opens the main valve 51 on the main pipeline 5 and the second electromagnetic valve 221 on the first exhaust pipe 22 through the main controller 3, closes the proportional valve 231 on the second exhaust pipe 23, and then starts vacuumizing. The pressure detector 6 acquires vacuum pressure signals of the cabin 12 in real time. The through holes 11 on the cabin body 1 are always communicated with the outside, so that oxygen can be supplied to the cabin 12 all the time, and oxygen deficiency is avoided.

(2) When the pressure detector 6 detects that the vacuum pressure corresponding to the altitude of 1500 meters is reached, the pressure detector converts a pressure signal into an electric signal of 4-20 milliamperes and feeds the electric signal back to an input module in the main controller 3, the input module converts the electric signal into a digital signal and feeds the digital signal back to the PLC for operation processing, and the PLC sends out two signals, wherein one signal is that the second electromagnetic valve 221 is directly closed; the other is transmitted to an output module, and the output module converts the transmitted digital signal (the digital signal is a signal sent from the PLC) into an electrical signal for output, so as to control the opening degree of the proportional valve 231 on the second exhaust pipe 23. After that, the pressure detector 6 continuously feeds back an electric signal to the main controller 3, and the plc continuously outputs a new electric signal through the output module to control the opening degree of the proportional valve 231, the proportional valve 231 independently adjusts the vacuum pumping speed, and the pumping speed is automatically controlled through the opening degree of the proportional valve 231, so that the cabin 12 is kept at the vacuum degree corresponding to the altitude of 1500 meters.

(3) After a hold of 5 minutes at an altitude of 1500 meters, the PLC again sends two signals, one signal being to close the proportional valve 231 and the other signal being to open the first solenoid valve 211 on the air inlet pipe 21. When the intake duct 21 is in communication with the cabin 12, outside air enters the cabin 12, and the cabin 12 pressure gradually increases and returns to the original state. Further, in actual operation, as the pressure of the cabin 12 increases, the speed of the outside air entering the cabin 12 decreases, so in this embodiment, two air inlet pipes 21 are provided on the cabin body 1, referring to fig. 1, when air inlet starts, only one air inlet pipe 21 is turned on, when the vacuum pressure in the cabin 12 is about 300 meters in altitude, the PLC sends out a signal, and the other air inlet pipe 21 is also turned on, so as to increase the speed of the air entering the cabin 12, thereby effectively saving time. In actual operation, the intake pipe 21 is sequentially turned on because the rapid increase of the vacuum pressure of the chamber 12 causes discomfort to the user's body, and thus, a sequential opening is adopted. The interval between opening of the two intake pipes 21 is determined according to the specific case, and this embodiment is only one case.

(4) When the vacuum pressure in the chamber 12 is restored to the initial state, the above steps (1), (2) and (3) are repeated as necessary.

Referring to fig. 1,2 and 4, the invention is provided with a protection system, which comprises a protection air pipe 24 arranged on the cabin body 1, wherein a third electromagnetic valve 241 is arranged on the protection air pipe 24, and the third electromagnetic valve 241 is electrically connected with the main controller 3. The third electromagnetic valve 241 is normally closed in the energized state, and is opened after being de-energized. In addition, the cabin body 1 is provided with a first air supplementing pipe 25, and a part of the first air supplementing pipe 25 outside the cabin body is provided with a manual valve 251; the cabin body 1 is provided with a second air supplementing pipe 26, and a part of the second air supplementing pipe 26 inside the cabin body is provided with a manual valve 261. When using, in case the outage takes place, main control unit 3 can stop work, and intake pipe 21 can not open, carries out effective guarantee to user's safety through this protection system, and this protection system can provide triple protection: first weight: after the power is off, the third electromagnetic valve 241 is opened, and the interior of the cabin 12 is in a negative pressure state, so that air can rapidly enter the cabin 12 through the protection air pipe 24, and the pressure and the oxygen concentration in the cabin 12 are increased. Second weight: after the power is off, a person outside the cabin can manually open the manual valve 251 on the first air supplementing pipe 25, and air enters the cabin 12 through the first air supplementing pipe 25, so that the pressure and the oxygen concentration in the cabin 12 are improved. Third ply: after the power is off, if no person is outside the cabin, the user in the cabin 12 may also actively open the manual valve 261 on the second air supply pipe 26, and air enters the cabin 12 through the second air supply pipe 26 to increase the pressure and oxygen concentration in the cabin 12. In addition, if it is desired to increase the rate of air flow into, for example, the cabin 12, the protective air duct 24, the first air supply duct 25 and the second air supply duct 26 may be opened simultaneously as desired. Experiments prove that when the inner diameters of the protection air pipe 24, the first air supplementing pipe 25 and the second air supplementing pipe 26 are 15-30mm, the protection requirements can be met, and the use safety of users in the cabin 12 is ensured.

When the cabin is used, the first air supplementing pipe 25 and the second air supplementing pipe 26 are required to be opened manually, so that the first air supplementing pipe 25 and the second air supplementing pipe 26 are both positioned at the middle position of the cabin body in the height direction, and the specific height is 1.1-1.5m away from the inner bottom of the cabin 12, so that the use requirement is met, and personnel inside and outside the cabin can be opened easily.

The pressure detector 6 in the present invention may be provided in plural, and the plural pressure detectors 6 may be provided at different positions of the cabin 1. The pressure detectors 6 transmit the measured data to the main controller 3 for processing, so that the average vacuum pressure of the cabin 12 can be obtained, and the detection accuracy can be improved. In other embodiments, a fan may be disposed in the chamber 12, and the air in the chamber is agitated by the fan to form an air flow, so as to mix the air in the chamber sufficiently, and allow the oxygen entering from the air inlet pipe 21 to diffuse rapidly, so that the air can be breathed by a user.

In the invention, the pipelines such as the air inlet pipe 21, the first air exhaust pipe 22, the second air exhaust pipe 23 and the like can be arranged at different positions of the cabin body 1 according to the requirements.

As shown in fig. 4 and fig. 6, the inside and outside of the cabin body 1 are respectively provided with an interphone 87, because the cabin body 1 is in a closed state during working, good communication can be established through the interphone 87, and a user in the cabin can report the situation of the user to personnel outside the cabin in time and then record and analyze the situation.

Referring to fig. 1 and 5, the two edges of the frame 14 are respectively bent outward to form annular flanges 141, and the edges of the annular flanges 141 are bent to the same side to form folded edges 142. Referring to fig. 5, during installation, the annular flanges 141 between the adjacent frames 14 are close together, the folded edges 142 are stacked together, that is, the adjacent frames 14 are spliced together, the adjacent frames 14 can be conveniently assembled and installed in a matched manner through the folded edges 142, the accuracy of the installation position is ensured, after the positions of the adjacent frames 14 are determined, the annular flanges 141 between the adjacent frames 14 are connected by using the connecting pieces 15, and the sealing strips 16 are arranged between the adjacent annular flanges 141, so that the tightness is ensured. Further, as shown in fig. 5, the two edges of the frame 14 are respectively bent outwards by 90 degrees to form annular flanges 141; the edge of the annular flange 141 on the frame 14 is bent 90 degrees to the same side to form the folded edge 142. A weather strip (not shown) is also provided between the two end plates 10 and the frame 14 of the present invention. As shown in fig. 5, the connecting member 15 in the present embodiment includes a bolt and a nut. The structure of the invention is convenient to assemble and easy to disassemble, and is not influenced by the specific size of the cabin; particularly, in the transportation process, the split device does not occupy excessive space.

As shown in fig. 6 and 7, the casters 7 in the present embodiment are provided with six casters 7 arranged in three rows of two. The casters 7 are arranged at the bottom of the cabin 1 through a mounting frame 71, and the casters 7 can protrude out of the bottom surface of the cabin 1 through a lifting device 72 arranged on the cabin 1. In this embodiment, the lifting device 72 is an oil cylinder, as shown in fig. 7, the oil cylinder is vertically arranged, a cylinder body of the oil cylinder is mounted on the cabin, a piston rod of the oil cylinder is connected with the mounting frame 71, and each caster wheel 7 corresponds to one oil cylinder respectively.

When the whole needs to be moved, the piston rods of all the oil cylinders extend out simultaneously, all the casters 7 are ejected out of the bottom surface of the cabin body 1, namely in the form shown in the figure, and then the cabin body 1 is pushed to a preset position; after the position is determined, the piston rods of all the oil cylinders retract, and then all the casters 7 are carried to reset and retract into the cabin body 1, so that the cabin body 1 is stably placed on the ground. In this embodiment, in order to protect the cabin 1 while preventing the cabin from damaging the ground, as shown in fig. 1 and 6, a plurality of pad plates 73 are provided on the bottom surface of the cabin 1. The pad 73 may be a wood board or a metal board coated with a soft material.

In a preferred embodiment: when the caster 7 moves up and down, the mounting frame 71 and the caster 7 move together, so that as shown in fig. 7, a guide structure 74 is arranged between the mounting frame 71 and the cabin 1, the position of the mounting frame 71 can be limited by the guide structure 74, the mounting frame 71 can only move along the up-and-down direction and cannot move in the horizontal direction, the caster 7 can be ensured to be stable when moving up and down, the cylinder piston rod can be protected, and the piston rod is prevented from being subjected to a large radial force. The guide structure 74 may be provided with one or more guide blocks; or an annular ring, that is, the annular ring is sleeved on the mounting frame 71 and can slide relatively, and the outer wall of the annular ring is fixedly connected with the cabin body 1. As shown in fig. 7, the present embodiment preferably employs a structure of two guide blocks 74. In addition, the casters 7 in the present embodiment are all universal casters. In other embodiments, two of them may be selected as universal casters, which may be specifically determined according to actual needs.

As shown in fig. 3, the cabin 12 according to the present invention is further provided with an oxygen concentration detector 81 for detecting an oxygen concentration, a carbon dioxide concentration detector 82 for detecting a carbon dioxide concentration, a relative humidity detector 83 for detecting humidity, and a temperature detector 84 for detecting temperature. The oxygen concentration detector 81, the carbon dioxide concentration detector 82, the relative humidity detector 83 and the temperature detector 84 are all electrically connected with the main controller 3, the main controller 3 is provided with a display screen, and data detected by all instruments can be displayed on the display screen, so that people outside the cabin can clearly know the conditions in the cabin. The invention also comprises an alarm 85 electrically connected with the main controller 3, when a certain data in the cabin is different from a preset value, the main controller 3 can trigger the alarm 85 to inform personnel outside the cabin to timely handle emergency. In addition, in the present embodiment, an auxiliary controller 31 electrically connected to the main controller 3 is further provided in the cabin 12, and the auxiliary controller 31 and the main controller 3 function identically, which can monitor data in the cabin. The alarm 85 in this embodiment includes an LED lamp and a speaker, and when a problem occurs, the LED lamp blinks and the speaker emits a prompt tone; in order to facilitate the outdoor personnel to observe the LED lamp in time, the LED lamp is arranged at the top of the cabin body 1.

As shown in fig. 1, the present embodiment further includes a battery 86, and the main controller 3 is electrically connected to the battery 86. The battery 86 serves as an emergency power source when a temporary power outage occurs, ensuring safe use for the user within the cabin 12.

In the preferred embodiment, the cabin is also provided with an oxygen generator, a humidifier, a dehumidifier, a heater and a refrigerator, which are all electrically connected with the main controller 3, and when parameters of different indexes in the cabin need to be adjusted, the main controller 3 and the auxiliary controller 31 can both adjust and control related devices, so that the cabin 12 is maintained in a state suitable for a user. For example, when a plurality of people use the cabin 12, the oxygen consumption is high, and then the oxygen generator needs to be started for oxygen supplement; also for example: only one elderly person uses the cabin 12, and has low breathing speed and low physiological metabolism, and the heater needs to be started to ensure the temperature of the cabin 12.

In summary, the cabin capable of forming a low-pressure environment is reliable in use, and the safety of a user is guaranteed due to the protection system. Therefore, the invention effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. The present invention is capable of modifications in the foregoing embodiments, as obvious to those skilled in the art, without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. Cabin capable of forming a low pressure environment, comprising a cabin body (1), characterized in that: end plates (10) are arranged at two ends of the cabin body (1), the cabin body (1) is formed by connecting a plurality of frame bodies (14) in series, and at least four casters (7) are arranged at the bottom of the cabin body (1); an air inlet pipe (21), a first air exhaust pipe (22) and a second air exhaust pipe (23) are arranged on the cabin body (1), and a through hole (11) is formed in the cabin body (1); the device also comprises a main controller (3), a vacuum pump (4), a main air pipe (5) and at least one pressure detector (6); the vacuum pump (4) is communicated with one end of the main air pipe (5), the first air exhaust pipe (22) and the second air exhaust pipe (23) are both communicated with the other end of the main air pipe (5), a main valve (51) is arranged on the main air pipe (5), a first electromagnetic valve (211) is arranged on the air inlet pipe (21), a second electromagnetic valve (221) is arranged on the first air exhaust pipe (22), a proportional valve (231) is arranged on the second air exhaust pipe (23), the pressure detector (6), the first electromagnetic valve (211), the second electromagnetic valve (221) and the proportional valve (231) are all electrically connected with the main controller (3), a protection air pipe (24) is arranged on the cabin body (1), a third electromagnetic valve (241) is arranged on the protection air pipe (24), and the third electromagnetic valve (241) is electrically connected with the main controller (3); the cabin body (1) is provided with a first air supplementing pipe (25), and a first manual valve (251) is arranged at the part of the first air supplementing pipe (25) outside the cabin body; the cabin body (1) is provided with a second air supplementing pipe (26), and a second manual valve (261) is arranged at the inner part of the cabin body of the second air supplementing pipe (26).

2. A cabin capable of forming a low pressure environment according to claim 1, characterized in that: two air inlet pipes (21) are arranged on the cabin body (1).

3. A cabin capable of forming a low pressure environment according to claim 1, characterized in that: the two end edges of the frame bodies (14) are respectively bent outwards to form annular flanges (141), the edges of the annular flanges (141) are bent to the same side to form folded edges (142), the annular flanges (141) between the adjacent frame bodies (14) are close together, the folded edges (142) are stacked together, the annular flanges (141) between the adjacent frame bodies (14) are connected through connecting pieces (15), and sealing strips (16) are arranged between the adjacent annular flanges (141).

4. A chamber capable of forming a low pressure environment according to claim 3, wherein: the two end edges of the frame body (14) are respectively bent outwards by 90 degrees to form annular flanges (141); the edge of the annular flange (141) on the frame body (14) is bent to the same side by 90 degrees to form the folded edge (142).

5. A cabin capable of forming a low pressure environment according to claim 1, characterized in that: the truckle (7) is installed in the bottom of the cabin body (1) through the mounting bracket (71), and the truckle (7) can be protruded out of the bottom surface of the cabin body (1) through a lifting device (72) installed on the cabin body (1).

6. A cabin capable of forming a low pressure environment according to claim 1, characterized in that: the cabin body is internally provided with a cabin (12), and an oxygen concentration detector (81), a carbon dioxide concentration detector (82), a relative humidity detector (83) and a temperature detector (84) are also arranged in the cabin (12); the oxygen concentration detector (81), the carbon dioxide concentration detector (82), the relative humidity detector (83) and the temperature detector (84) are electrically connected with the main controller (3).

7. A cabin capable of forming a low pressure environment according to claim 1, characterized in that: also comprises an alarm (85) electrically connected with the main controller (3).