CN113371017A - Circulating air supply method for marshalling operation train in vacuum environment - Google Patents

Abstract

The invention provides a circulating air supply method for a marshalling running train in a vacuum environment, which comprises the following steps: judging whether the pressure change rate exceeds a set safety threshold value or not; when the air is within the set safety threshold, the normal air supply assembly is used for supplying air to the carriage; when the set safety threshold value is exceeded, the first emergency gas supply assembly is used for supplying gas to the compartment; when the pressure change rate is gradually reduced and is recovered to be within the set safety threshold value, reducing the gas supply rate of the first emergency gas supply assembly; supplying gas to the first compartment using the first and second emergency gas supply assemblies as the rate of pressure change continues to increase; when the pressure change rate is gradually reduced and is recovered to be within the set safety threshold, reducing the gas supply rate of the second emergency gas supply assembly; when the rate of pressure change continues to increase, an emergency stop is performed on the train. By applying the technical scheme of the invention, the technical problem that the train can not realize the circular air supply in the vacuum environment in the prior art is solved.

Description

Circulating air supply method for marshalling operation train in vacuum environment

Technical Field

The invention relates to the technical field of circulating air supply of a vacuum environment marshalling operation train, in particular to a circulating air supply method for the vacuum environment marshalling operation train.

Background

The long-term manned spacecraft mainly adopts the method of water electrolysis for gas supply. The electric energy required for the reaction is generated by solar panels on the space station and is transmitted to the oxygen generator via the electricity network of the space station, and the water is transmitted to the space station via the cargo ship. In addition, the water vapor exhaled by the astronaut can be recovered from the air in the cabin through the condenser, and the water can be recovered from the urine of the astronaut. Hydrogen produced by electrolysis of water can react with carbon dioxide produced by astronauts to produce water and methane (biogas). The water may participate in the electrolysis again to produce oxygen. The methane and remaining hydrogen are vented into space.

The air source of the modern civil aviation airliner mainly comes from the bleed air of an engine compressor, which is the main air source when the airplane normally flies; the auxiliary power device can be used for air-entraining under certain conditions on the ground and in the air; a surface air source may also be used at the surface.

Fresh air outside the train is sucked by a ventilation system and mixed with recirculated air in the train, and after dust and impurities are filtered, the fresh air is delivered into the train in a compressed mode and is distributed in the train, and meanwhile redundant dirty air in the train is discharged, so that the cleanliness and reasonable flowing speed of the air in the train are guaranteed.

However, the water electrolysis method used by the manned spacecraft is suitable for carriers with sufficient water source and electric energy or low requirements on dead weight. The method for introducing air into the engine or the fan of the high-speed train for civil aviation is suitable for the condition of small pressure difference between the inside and the outside of the cabin. For a marshalling operation train in a vacuum environment, the gas demand is high, the self weight of the train body is high, the pressure difference between the inside and the outside of the cabin body is large, and the outside air cannot be directly introduced, so that the three methods are not suitable for use.

Disclosure of Invention

The invention provides a circulating air supply method for a marshalling running train in a vacuum environment, which can solve the technical problem that the circulating air supply of the train in the vacuum environment cannot be realized in the prior art.

The invention provides a circulating gas supply method for a marshalling running train in a vacuum environment, which comprises the following steps: monitoring the pressure change rate in the first carriage in real time, and judging whether the pressure change rate of the first carriage exceeds a set safety threshold value or not; when the pressure change rate is within a set safety threshold, using a normal gas supply assembly to supply gas to the first car; when the pressure change rate exceeds a set safety threshold value, the first emergency gas supply assembly is used for supplying gas to the first compartment, and the pressure change rate of the first compartment is monitored; when the pressure change rate of the first compartment is gradually reduced and is recovered to be within a set safety threshold value, reducing the gas supply rate of the first emergency gas supply assembly; when the pressure change rate of the first compartment continues to increase, simultaneously supplying gas to the first compartment by using the first emergency gas supply gas component and the second emergency gas supply gas component of the second compartment, and monitoring the pressure change rate of the first compartment; when the pressure change rate of the first compartment is gradually reduced and is restored to be within a set safety threshold value, reducing the gas supply rate of the second emergency gas supply assembly; when the rate of pressure change continues to increase, an emergency stop is performed on the train.

Further, the supplying the first compartment with the normal supply gas assembly specifically includes: normal fresh air with specified oxygen partial pressure and total pressure is formulated, and the normal fresh air with the specified oxygen partial pressure and total pressure is sent into a first compartment; the method comprises the following steps of (1) recovering dirty air in a first carriage, and treating and recovering the dirty air; and mixing and matching the recovered gas obtained by recovering and processing the dirty air with the normal fresh air in the normal air supply gas assembly, and then sending the mixed gas into the first compartment, and repeating the process to realize the normal air supply of the first compartment.

Further, after the dirty air in the first compartment is recovered and processed and recovered, the method for circulating air supply further includes: the flow rates of oxygen and nitrogen in the recovered gas obtained by the recovery treatment from the contaminated air are monitored in real time.

Further, before supplying air to the first compartment, the circulating air supply method further includes: the oxygen partial pressure and the total pressure of the air introduced into the first compartment are adjusted by the air conditioner, and the pressure-adjusted air output from the air conditioner is filtered, temperature-adjusted, and humidity-adjusted.

Further, the step of establishing normal fresh air with specified oxygen partial pressure and total pressure specifically comprises the following steps: using a normal gas supply high-pressure oxygen tank in the normal gas supply assembly to provide normal fresh oxygen and adjusting the pressure and flow of the normal fresh oxygen; a normal gas supply high-pressure nitrogen tank in the normal gas supply assembly is used for supplying normal fresh nitrogen and adjusting the pressure and the flow of the normal fresh nitrogen; and inputting the normal fresh oxygen and the normal fresh nitrogen after pressure regulation into an air conditioning device, and matching the normal fresh oxygen and the normal fresh nitrogen through the air conditioning device to prepare normal fresh air with specified oxygen partial pressure and total pressure.

Further, after the pressure and the flow of the normal fresh oxygen are adjusted, the circulation gas supply method further comprises the following steps: monitoring the flow and pressure of normal fresh oxygen in real time; and/or after the pressure and the flow of the normal fresh nitrogen are adjusted, the circulating gas supply method further comprises the following steps: the flow and pressure of normal fresh nitrogen were monitored in real time.

Further, the supplying the first compartment with the first emergency gas supply assembly specifically includes: providing first emergency fresh oxygen by using a first emergency air supply high-pressure oxygen tank in the first emergency air supply gas assembly and adjusting the pressure and the flow of the first emergency fresh oxygen; providing first emergency fresh nitrogen by using a first emergency gas supply high-pressure nitrogen tank in the first emergency gas supply assembly and adjusting the pressure and the flow of the first emergency fresh nitrogen; and the first emergency fresh oxygen, the first emergency fresh nitrogen and the recovered nitrogen and oxygen are input into an air conditioning device, and the first emergency fresh oxygen, the first emergency fresh nitrogen and the recovered nitrogen and oxygen are matched through the air conditioning device to prepare the emergency fresh air with the specified oxygen partial pressure and total pressure.

Further, after the pressure and the flow of the first emergency fresh oxygen are adjusted, the circulating gas supply method further comprises the following steps: monitoring the flow and pressure of the first emergency fresh oxygen in real time; and/or after adjusting the pressure and flow of the first emergency fresh nitrogen gas, the method for recycling gas further comprises: the flow and pressure of the first emergency fresh nitrogen gas are monitored in real time.

Further, using the first emergency gas supply assembly and the second emergency gas supply assembly of the second car to simultaneously supply gas to the first car specifically includes: providing first emergency fresh oxygen by using a first emergency air supply high-pressure oxygen tank in the first emergency air supply gas assembly and adjusting the pressure and the flow of the first emergency fresh oxygen; providing first emergency fresh nitrogen by using a first emergency gas supply high-pressure nitrogen tank in the first emergency gas supply assembly and adjusting the pressure and the flow of the first emergency fresh nitrogen; providing second emergency fresh oxygen by using a second emergency gas supply high-pressure oxygen tank in a second emergency gas supply assembly and adjusting the pressure and the flow of the second emergency fresh oxygen; providing second emergency fresh nitrogen by using a second emergency gas supply high-pressure nitrogen tank in a second emergency gas supply assembly, and adjusting the pressure and the flow of the second emergency fresh nitrogen; and inputting the first emergency fresh oxygen, the first emergency fresh nitrogen, the second emergency fresh oxygen, the second emergency fresh nitrogen and the recovered nitrogen and oxygen into an air conditioning device, and matching the first emergency fresh oxygen, the first emergency fresh nitrogen, the second emergency fresh oxygen, the second emergency fresh nitrogen and the recovered nitrogen and oxygen through the air conditioning device to prepare the emergency fresh air with the specified oxygen partial pressure and total pressure.

Further, after the pressure and the flow of the second emergency fresh oxygen are adjusted, the circulating gas supply method further comprises the following steps: monitoring the flow and pressure of the second emergency fresh oxygen in real time; and/or after the pressure and the flow of the second emergency fresh nitrogen are adjusted, the circulating gas supply method further comprises the following steps: and monitoring the flow and pressure of the second emergency fresh nitrogen in real time.

The technical scheme of the invention is applied, and the circulating air supply method for the marshalling running train in the vacuum environment is provided, the method monitors the pressure change rate in the train compartment in real time, and when the pressure change rate is within a set safety threshold, a normal air supply gas assembly is used for supplying air to the first train compartment; and when the pressure change rate exceeds a set safety threshold value, selecting to use the first emergency gas supply assembly of the first compartment to supply gas to the first compartment or use the first emergency gas supply assembly and the second emergency gas supply assembly of the second compartment to supply gas to the first compartment according to the pressure change rate of the first compartment. Compared with the prior art, the circular air supply method provided by the invention has the advantages that no external air is required to be introduced, the requirement on the external environment of the train body is low, the emergency rescue problem of air leakage caused by the damage of the train body structure of a certain train in the running process of the marshalling train in the vacuum environment can be solved, and the air supply requirement of a sealed carriage with a large carrying capacity and a requirement for people carrying can be met.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a block flow diagram illustrating a method of circulating gas supply for a vacuum environment marshalling operating train according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram illustrating a circular gas supply system for a train operating in a marshalling mode in a vacuum environment according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a pressure sensing unit; 20. a normal gas supply assembly; 21. a normal oxygen supply assembly; 211. a high-pressure oxygen tank for normal gas supply; 212. a normal oxygen supply pressure reducing valve; 213. a normal oxygen flow and pressure sensing assembly; 22. a normal nitrogen supply assembly; 221. a high-pressure nitrogen tank for normal gas supply; 222. a normal nitrogen supply pressure reducing valve; 223. a normal nitrogen supply flow and pressure sensing assembly; 30. a first emergency gas supply assembly; 31. a first emergency oxygen supply assembly; 311. a first emergency gas supply high pressure oxygen tank; 312. a first emergency oxygen supply pressure reducing valve; 313. a first emergency oxygen flow and pressure sensing assembly; 32. a first emergency nitrogen supply assembly; 321. a first emergency gas supply high-pressure nitrogen tank; 322. a first emergency nitrogen supply pressure reducing valve; 323. a first emergency nitrogen supply flow and pressure sensing assembly; 40. a second emergency gas supply assembly; 41. a second emergency oxygen supply assembly; 411. a second emergency gas supply high-pressure oxygen tank; 412. a second emergency oxygen supply pressure reducing valve; 413. a second emergency oxygen supply flow and pressure sensing assembly; 42. a second emergency nitrogen supply assembly; 421. a second emergency gas supply high-pressure nitrogen tank; 422. a second emergency nitrogen supply pressure reducing valve; 423. a second emergency nitrogen supply flow and pressure sensing assembly; 50. an air supply state switch valve; 60. an auxiliary gas supply switch valve; 70. an air conditioner; 80. a waste gas recovery treatment tank; 90. a first power unit; 100. a second power unit; 110. and a recycle gas flow regulating valve.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1, there is provided a method of cyclically supplying gas for a vacuum environment marshalling operation train according to an embodiment of the present invention, the method including: monitoring the pressure change rate in the first carriage in real time, and judging whether the pressure change rate of the first carriage exceeds a set safety threshold value or not; when the pressure change rate is within a set safety threshold, using a normal gas supply assembly to supply gas to the first car; when the pressure change rate exceeds a set safety threshold value, the first emergency gas supply assembly is used for supplying gas to the first compartment, and the pressure change rate of the first compartment is monitored; when the pressure change rate of the first compartment is gradually reduced and is recovered to be within a set safety threshold value, reducing the gas supply rate of the first emergency gas supply assembly; when the pressure change rate of the first compartment continues to increase, simultaneously supplying gas to the first compartment by using the first emergency gas supply gas component and the second emergency gas supply gas component of the second compartment, and monitoring the pressure change rate of the first compartment; when the pressure change rate of the first compartment is gradually reduced and is restored to be within a set safety threshold value, reducing the gas supply rate of the second emergency gas supply assembly; when the rate of pressure change continues to increase, an emergency stop is performed on the train.

By applying the configuration mode, the circulating air supply method for the marshalling running train in the vacuum environment is provided, the method monitors the pressure change rate in the train compartment in real time, and when the pressure change rate is within a set safety threshold, the normal air supply gas assembly is used for supplying air to the first train compartment; and when the pressure change rate exceeds a set safety threshold value, selecting to use the first emergency gas supply assembly of the first compartment to supply gas to the first compartment or use the first emergency gas supply assembly and the second emergency gas supply assembly of the second compartment to supply gas to the first compartment according to the pressure change rate of the first compartment. Compared with the prior art, the circular air supply method provided by the invention has the advantages that no external air is required to be introduced, the requirement on the external environment of the train body is low, the emergency rescue problem of air leakage caused by the damage of the train body structure of a certain train in the running process of the marshalling train in the vacuum environment can be solved, and the air supply requirement of a sealed carriage with a large carrying capacity and a requirement for people carrying can be met.

Specifically, in the present invention, when the cyclic air supply method provided by the present invention is used to cyclically supply air to the first car, it is determined whether the pressure change rate in the car exceeds a set safety threshold, where the pressure change rate specifically refers to the total pressure change rate. If the pressure change rate in the first car is within a set safety threshold, using a normal gas supply assembly to supply gas to the first car; and if the pressure change rate in the first compartment exceeds a set safety threshold value, the first emergency gas supply assembly of the first compartment is used for supplying gas to the first compartment, and the pressure change rate of the first compartment is monitored. When the pressure change rate of the first compartment is gradually reduced and is recovered to be within a set safety threshold value, reducing the gas supply rate of the first emergency gas supply assembly; when the rate of change of pressure in the first car continues to increase, the first car is supplied with gas and the rate of change of pressure in the first car is monitored using the first emergency gas supply assembly and the second emergency gas supply assembly in the second car, and the rates of supply of the first emergency gas supply assembly and the second emergency gas supply assembly are both maintained at the maximum rate of supply. If the first emergency gas supply assembly of the first carriage and the second emergency gas supply assembly of the second carriage supplement gas simultaneously, the gas supply rate of the second emergency gas supply assembly of the second carriage is reduced when the pressure change rate of the first carriage leaking gas is gradually reduced and is restored to the set safety threshold value. If the first emergency gas supply assembly of the first carriage and the second emergency gas supply assembly of the second carriage supplement gas simultaneously, the pressure change rate of the first carriage with gas leakage is still increased, and at the moment, the train is emergently stopped to implement subsequent rescue evacuation.

In addition, the first carriage and the second carriage mentioned in the invention are not particularly limited, the first carriage refers to any air leaking carriage in the train, the second carriage is a carriage adjacent to the air leaking first carriage, and for any air leaking carriage, when the maximum air supplementing rate of the emergency air supplying component carried by the carriage is smaller than the carriage air leaking rate and the pressure change rate of the air leaking carriage still exceeds the set safety threshold, the emergency air supplying component carried by the carriage and the emergency air supplying component carried by the carriage can be used for supplementing air together.

Further, in the present invention, when the rate of change of the pressure in the vehicle compartment is within the set safety threshold, in order to provide normal fresh air, the supplying the first vehicle compartment with the normal supply air module specifically includes: normal fresh air with specified oxygen partial pressure and total pressure is formulated, and the normal fresh air with the specified oxygen partial pressure and total pressure is sent into a first compartment; the method comprises the following steps of (1) recovering dirty air in a first carriage, and treating and recovering the dirty air; and mixing and matching the recovered gas obtained by recovering and processing the dirty air with the normal fresh air in the normal air supply gas assembly, and then sending the mixed gas into the first compartment, and repeating the process to realize the normal air supply of the first compartment.

In addition, in the present invention, in order to ensure that the oxygen and nitrogen content in the gas supplied into the vehicle compartment matches the oxygen and nitrogen content required by the human body, and further improve the riding comfort of passengers, the method for circulating the gas supply further comprises the steps of: the flow rates of oxygen and nitrogen in the recovered gas obtained by the recovery treatment from the contaminated air are monitored in real time. Under this kind of mode, through the flow of oxygen and nitrogen gas in the recovered gas that real-time supervision recovery processing obtained from the foul air, and then can acquire the proportion of oxygen and nitrogen gas, convenient follow-up adjusts in order to improve passenger's comfort level by bus to the proportion between oxygen and the nitrogen gas.

In the present invention, in order to further improve the riding comfort of passengers in the vehicle compartment, the method of circulating air supply further includes, before supplying air to the first vehicle compartment: the oxygen partial pressure and the total pressure of the air introduced into the first compartment are adjusted by the air conditioner, and the pressure-adjusted air output from the air conditioner is filtered, temperature-adjusted, and humidity-adjusted.

Further, in the present invention, in order to obtain normal fresh air, the setting of normal fresh air with specified oxygen partial pressure and total pressure specifically includes: using a normal gas supply high-pressure oxygen tank in the normal gas supply assembly to provide normal fresh oxygen and adjusting the pressure and flow of the normal fresh oxygen; a normal gas supply high-pressure nitrogen tank in the normal gas supply assembly is used for supplying normal fresh nitrogen and adjusting the pressure and the flow of the normal fresh nitrogen; and inputting the normal fresh oxygen and the normal fresh nitrogen after pressure regulation into an air conditioning device, and matching the normal fresh oxygen and the normal fresh nitrogen through the air conditioning device to prepare normal fresh air with specified oxygen partial pressure and total pressure. Wherein, in order to monitor the output proportion of oxygen and nitrogen gas in the normal gas supply gas subassembly more directly perceivedly, after adjusting the pressure and the flow of normal fresh oxygen, the circulation gas supply method still includes: monitoring the flow and pressure of normal fresh oxygen in real time; and/or after the pressure and the flow of the normal fresh nitrogen are adjusted, the circulating gas supply method further comprises the following steps: the flow and pressure of normal fresh nitrogen were monitored in real time.

In addition, in the present invention, in order to obtain the first emergency fresh air when the vehicle compartment leaks, the supplying the first vehicle compartment with the first emergency air supply gas component specifically includes: providing first emergency fresh oxygen by using a first emergency air supply high-pressure oxygen tank in the first emergency air supply gas assembly and adjusting the pressure and the flow of the first emergency fresh oxygen; providing first emergency fresh nitrogen by using a first emergency gas supply high-pressure nitrogen tank in the first emergency gas supply assembly and adjusting the pressure and the flow of the first emergency fresh nitrogen; and the first emergency fresh oxygen, the first emergency fresh nitrogen and the recovered nitrogen and oxygen are input into an air conditioning device, and the first emergency fresh oxygen, the first emergency fresh nitrogen and the recovered nitrogen and oxygen are matched through the air conditioning device to prepare the emergency fresh air with the specified oxygen partial pressure and total pressure. Wherein, in order to monitor the output proportion of oxygen and nitrogen gas in the gaseous subassembly of first emergency air feed more directly perceivedly, after adjusting the pressure and the flow of first emergency fresh oxygen, the circulation air feed method still includes: monitoring the flow and pressure of the first emergency fresh oxygen in real time; and/or after adjusting the pressure and flow of the first emergency fresh nitrogen gas, the method for recycling gas further comprises: the flow and pressure of the first emergency fresh nitrogen gas are monitored in real time.

Further, in the present invention, when the pressure change rate of the first car continues to increase after the first emergency gas supply module is used to supply gas to the first car, the first emergency gas supply module and the second emergency gas supply module are used to supply gas to the car at the same time in order to timely supply gas to the car. Using the first emergency gas supply assembly and the second emergency gas supply assembly of the second car to simultaneously supply gas to the first car specifically includes: providing first emergency fresh oxygen by using a first emergency air supply high-pressure oxygen tank in the first emergency air supply gas assembly and adjusting the pressure and the flow of the first emergency fresh oxygen; providing first emergency fresh nitrogen by using a first emergency gas supply high-pressure nitrogen tank in the first emergency gas supply assembly and adjusting the pressure and the flow of the first emergency fresh nitrogen; providing second emergency fresh oxygen by using a second emergency gas supply high-pressure oxygen tank in a second emergency gas supply assembly and adjusting the pressure and the flow of the second emergency fresh oxygen; providing second emergency fresh nitrogen by using a second emergency gas supply high-pressure nitrogen tank in a second emergency gas supply assembly, and adjusting the pressure and the flow of the second emergency fresh nitrogen; and inputting the first emergency fresh oxygen, the first emergency fresh nitrogen, the second emergency fresh oxygen, the second emergency fresh nitrogen and the recovered nitrogen and oxygen into an air conditioning device, and matching the first emergency fresh oxygen, the first emergency fresh nitrogen, the second emergency fresh oxygen, the second emergency fresh nitrogen and the recovered nitrogen and oxygen through the air conditioning device to prepare the emergency fresh air with the specified oxygen partial pressure and total pressure. Wherein, in order to monitor the output ratio of oxygen and nitrogen gas in the emergent gas supply gas subassembly of second more directly perceived, after adjusting the pressure and the flow of the emergent fresh oxygen of second, the circulation gas supply method still includes: monitoring the flow and pressure of the second emergency fresh oxygen in real time; and/or after the pressure and the flow of the second emergency fresh nitrogen are adjusted, the circulating gas supply method further comprises the following steps: and monitoring the flow and pressure of the second emergency fresh nitrogen in real time.

According to another aspect of the present invention, as shown in fig. 2, there is provided a circulating air supply system for a vacuum environment marshalling operation train, the circulating air supply system comprising a pressure sensing unit 10, a control unit, a normal air supply gas component 20, a first emergency air supply gas component 30 and a second emergency air supply gas component 40, the pressure sensing unit 10 being configured to monitor a pressure in a first car in real time, the control unit being connected to the pressure sensing unit 10, the control unit being configured to calculate a rate of change of the pressure in the first car based on the pressure in the first car, the normal air supply gas component 20 being connected to the first car, the normal air supply gas component 20 being configured to provide normal fresh air, the first emergency air supply gas component 30 being selectively connected to the first car, the first emergency air supply gas component 30 being configured to provide first emergency fresh air, the second emergency air supply gas component 40 being selectively connected to the first car or the second car, a second emergency air supply gas assembly 40 is used to provide second emergency fresh air; wherein the circulating air supply system supplies air to the first compartment using the normal air supply assembly 20 when the rate of pressure change is within a set safety threshold; when the rate of pressure change exceeds a set safety threshold, the cyclical air supply system supplies air to the first compartment using the first emergency air supply gas assembly 30 or supplies air to the first compartment using the first emergency air supply gas assembly 30 and the second emergency air supply gas assembly 40 of the second compartment.

By applying the configuration mode, the circulating gas supply system for the vacuum environment marshalling running train is provided, the circulating gas supply system monitors the pressure change rate in the carriage in real time in the running process of the train by arranging the normal gas supply gas assembly, the first emergency gas supply gas assembly and the second emergency gas supply gas assembly, and when the pressure change rate is within a set safety threshold value, the circulating gas supply system supplies gas to the first carriage by using the normal gas supply gas assembly; when the rate of pressure change exceeds a set safety threshold, the cyclical air supply system supplies air to the first car using a first emergency air supply gas component of the first car or supplies air to the first car using the first emergency air supply gas component and a second emergency air supply gas component of the second car. Compared with the prior art, the circulating air supply system provided by the invention has the advantages that the system does not need to introduce external air, has low requirements on the external environment of the train body, can solve the problem of emergency rescue under the condition of air leakage caused by the damage of the train body structure of a certain train in the running process of a marshalling train in a vacuum environment, and can meet the air supply requirement of a sealed carriage with a large carrying capacity and people carrying requirement.

Specifically, in the invention, the pressure sensing unit comprises a total pressure sensor and an oxygen partial pressure sensor, and the total pressure and the oxygen partial pressure in the vehicle can be respectively monitored by using the pressure sensing unit. The control unit is connected with the pressure sensing unit 10, and the control unit calculates and obtains the total pressure change rate of the first carriage according to the total pressure in the vehicle monitored by the pressure sensing unit 10. In the invention, the pressure change rate specifically refers to a total pressure change rate, and whether air is supplied to the carriage is determined according to whether the total pressure change rate of the first carriage exceeds a set safety threshold.

Further, in the present invention, in order to realize the supply of the first compartment with different supply gas components according to the rate of change of the in-vehicle pressure, the circulating gas supply system may be configured to further include a gas supply state switching valve 50 and an auxiliary gas supply switching valve 60, the normal gas supply assembly 20, the first emergency gas supply assembly 30, and the second emergency gas supply assembly 40 are all connected to the first car through the gas supply state switching valve 50, the second emergency gas supply assembly 40 is connected to the gas supply state switching valve 50 through the auxiliary gas supply switching valve 60, the gas supply state switching valve 50 is used to realize disconnection or connection between the normal gas supply assembly 20, the first emergency gas supply assembly 30, and the second emergency gas supply assembly 40 and the first car, respectively, and the auxiliary gas supply switching valve 60 is used to realize disconnection or connection between the second emergency gas supply assembly 40 and the gas supply state switching valve 50.

In the configuration mode, if the pressure change rate in the first car is within the set safety threshold, the air supply state switch valve acts to enable the normal air supply assembly to be connected with the first car, and the circulating air supply system supplies air to the first car by using the normal air supply assembly; if the pressure change rate in the first carriage exceeds the safety limit value, the air supply state switch valve acts to enable the first emergency air supply component to be connected with the first carriage, the auxiliary air supply switch valve is closed at the moment, the first emergency air supply component of the first carriage is used for supplying air to the first carriage, and the pressure change rate of the first carriage is monitored. When the pressure change rate of the first compartment is gradually reduced and is recovered to be within the safety limit value, reducing the gas supply rate of the first emergency gas supply assembly; and when the pressure change rate of the first compartment continues to increase, opening the auxiliary gas supply switch valve, and supplying gas to the first compartment by using the first emergency gas supply gas component and the second emergency gas supply gas component of the second compartment. If the first emergency gas supply assembly of the first carriage and the second emergency gas supply assembly of the second carriage supplement gas simultaneously, the gas supply rate of the second emergency gas supply assembly of the second carriage is reduced when the pressure change rate of the first carriage leaking gas is gradually reduced and is recovered to the safety limit value. If the first emergency gas supply assembly of the first carriage and the second emergency gas supply assembly of the second carriage supplement gas simultaneously, the pressure change rate of the first carriage with gas leakage is still increased, and at the moment, the train is emergently stopped to implement subsequent rescue evacuation.

Further, in the present invention, in order to improve the riding comfort of the passengers in the vehicle cabin, it is necessary to adjust the oxygen partial pressure of the supplied gas. Specifically, in the present invention, the circulation air supply system further includes an air conditioner 70, the air conditioner 70 being connected to the air supply state switching valve 50, the air conditioner 70 being configured to adjust the oxygen partial pressure of the gas entering the first compartment.

In addition, in the present invention, in order to improve the utilization rate of the exhaust gas in the car and reduce the running cost of the train, the circulating air supply system may be configured to further include an exhaust gas recovery processing tank 80, the exhaust gas recovery processing tank 80 is connected to the first car and the air conditioner 70, respectively, and the exhaust gas recovery processing tank 80 is configured to process the exhaust gas in the first car.

Further, in order to improve the circulation efficiency of the air in the vehicle compartment, the circulation air supply system may be configured to further include a first power unit 90 and a second power unit 100, the first power unit 90 is connected to the first vehicle compartment and the air conditioner 70, respectively, the first power unit 90 is configured to supply the air conditioned by the air conditioner 70 to the first vehicle compartment, the second power unit 100 is connected to the first vehicle compartment and the exhaust gas recovery processing tank 80, respectively, and the second power unit 100 is configured to supply the exhaust gas in the first vehicle compartment to the exhaust gas recovery processing tank 80. As an example embodiment of the present invention, the first power unit 90 includes a blower and the second power unit 100 includes a return fan.

In addition, in the present invention, in order to ensure that the oxygen and nitrogen content in the gas supplied into the vehicle compartment matches the oxygen and nitrogen content required by the human body, and further improve the riding comfort of passengers, the circulating gas supply system may be configured to further include a recovered gas flow rate adjusting valve 110, the recovered gas flow rate adjusting valve 110 is respectively connected to the exhaust gas recovery processing tank 80 and the air conditioner 70, and the recovered gas flow rate adjusting valve 110 is used for adjusting the flow rates of oxygen and nitrogen in the gas processed by the exhaust gas recovery processing tank 80.

In the present invention, in order to further improve the riding comfort of the passengers in the vehicle compartment, it is necessary to filter, temperature-adjust, and humidity-adjust the air output from the air conditioner. Specifically, in the present invention, the circulation air supply system further includes a filtering unit, a temperature adjusting unit, and a humidity adjusting unit, the filtering unit is respectively connected to the air conditioner 70 and the temperature adjusting unit, the humidity adjusting unit is respectively connected to the temperature adjusting unit and the first compartment, the filtering unit is configured to filter the air output from the air conditioner 70, the temperature adjusting unit is configured to adjust the temperature of the air output from the air conditioner 70, and the humidity adjusting unit is configured to adjust the humidity of the air output from the air conditioner 70. In this configuration, the air output from the air conditioner 70 is filtered by the filtering unit, cooled or heated by the temperature adjusting unit, and dehumidified or humidified by the humidity adjusting unit, and then is sent into the sealed vehicle compartment at a constant flow rate by the blower.

Further, in the present invention, when the pressure change rate in the vehicle cabin is within the safety limit, in order to provide normal fresh air, the normal air supply gas assembly 20 may be configured to include a normal oxygen supply assembly 21 and a normal nitrogen supply assembly 22, the normal oxygen supply assembly 21 and the normal nitrogen supply assembly 22 are connected in parallel and then connected to the air supply state switch valve 50, the normal oxygen supply assembly 21 includes a normal air supply high-pressure oxygen tank 211, a normal oxygen supply pressure reducing valve 212, and a normal oxygen supply flow and pressure sensing assembly 213 that are sequentially connected in series, the normal oxygen supply pressure reducing valve 212 is configured to adjust the oxygen pressure and flow output by the normal air supply high-pressure oxygen tank 211, and the normal oxygen supply flow and pressure sensing assembly 213 is configured to monitor the oxygen flow and pressure output by the normal air supply high-pressure oxygen tank 211 after pressure regulation; the normal nitrogen gas supply assembly 22 comprises a normal gas supply high-pressure nitrogen tank 221, a normal nitrogen supply pressure reducing valve 222 and a normal nitrogen supply flow and pressure sensing assembly 223 which are sequentially connected in series, wherein the normal nitrogen supply pressure reducing valve 222 is used for adjusting the pressure and flow of nitrogen gas output by the normal gas supply high-pressure nitrogen tank 221, and the normal nitrogen supply flow and pressure sensing assembly 223 is used for monitoring the flow and pressure of nitrogen gas output by the normal gas supply high-pressure nitrogen tank 221 after pressure adjustment.

In addition, in the invention, when the carriage leaks, in order to provide the first emergency fresh air in time, the first emergency oxygen supply gas component 30 may be configured to include a first emergency oxygen supply component 31 and a first emergency nitrogen supply component 32, the first emergency oxygen supply component 31 and the first emergency nitrogen supply component 32 are connected in parallel and then connected to the gas supply state switch valve 50, the first emergency oxygen supply component 31 includes a first emergency oxygen supply high-pressure oxygen tank 311, a first emergency oxygen supply pressure reducing valve 312, and a first emergency oxygen supply flow and pressure sensing component 313, which are sequentially connected in series, the first emergency oxygen supply pressure reducing valve 312 is used to adjust the oxygen pressure and flow output by the first emergency oxygen supply high-pressure oxygen tank 311, and the first emergency oxygen supply flow and pressure sensing component 313 is used to monitor the flow and pressure of the oxygen output by the first emergency oxygen supply high-pressure oxygen tank 311 after pressure adjustment; first emergency nitrogen gas supply subassembly 32 includes first emergency gas supply high pressure nitrogen gas jar 321, first emergency supply nitrogen relief pressure valve 322 and first emergency supply nitrogen flow and pressure sensing subassembly 323 that series connection in proper order, and first emergency supplies nitrogen relief pressure valve 322 to be used for adjusting the nitrogen gas pressure and the flow of first emergency gas supply high pressure nitrogen gas jar 321 output, and first emergency supplies nitrogen flow and pressure sensing subassembly 323 to be used for monitoring the flow and the pressure of the nitrogen gas of first emergency gas supply high pressure nitrogen gas jar 321 output after the pressure regulating.

Further, in the present invention, when the first cabin pressure change rate continues to increase after the first emergency air supply component is used to supply air to the first cabin, in order to provide second emergency fresh air in time, the second emergency air supply component 40 may be configured to include a second emergency oxygen supply component 41 and a second emergency nitrogen supply component 42, the second emergency oxygen supply component 41 and the second emergency nitrogen supply component 42 are connected in parallel and then connected to the air supply state switch valve 50, the second emergency oxygen supply component 41 includes a second emergency air supply high-pressure oxygen tank 411, a second emergency oxygen supply pressure reducing valve 412 and a second emergency oxygen supply flow and pressure sensing component 413 which are sequentially connected in series, the second emergency oxygen supply pressure reducing valve 412 is used to adjust the oxygen pressure and flow output by the second emergency oxygen supply high-pressure oxygen tank 411, and the second emergency oxygen supply flow and pressure sensing component 413 is used to monitor the oxygen pressure and flow output by the second emergency oxygen supply high-pressure oxygen tank 411 after pressure adjustment The flow rate and pressure of; the emergent nitrogen gas air feed subassembly 42 of second is including the emergent air feed high pressure nitrogen gas jar 421 of second, the emergent nitrogen pressure reducing valve 422 that supplies of second and the emergent nitrogen flow and pressure sensing subassembly 423 that supply of second that series connection in proper order, and the emergent nitrogen pressure and the flow that supply nitrogen pressure reducing valve 422 is used for adjusting the emergent air feed high pressure nitrogen gas jar 421 output of second, and the emergent nitrogen flow and the pressure sensing subassembly 423 of supplying of second are used for monitoring the flow and the pressure of the emergent air feed high pressure nitrogen gas jar 421 output of second after the pressure regulating.

According to another aspect of the present invention there is provided a magnetic levitation train comprising a circulating gas supply system as described above for a vacuum environment marshalling operating train. By applying the configuration mode, the circulating air supply system does not need to introduce external air, has low requirements on the external environment of the train body, can solve the problem of emergency rescue under the condition of air leakage caused by the damage of the train body structure of a certain train in the running process of a marshalling train in a vacuum environment, and can meet the air supply requirement of a sealed carriage with a large carrying capacity and people carrying requirement. Therefore, the circulating gas supply system provided by the invention is applied to the magnetic suspension train, and the working performance of the magnetic suspension train can be greatly improved.

In order to further understand the present invention, a circulating gas supply system and a method for a train operating in a vacuum environment formation according to the present invention will be described in detail with reference to fig. 1 and 2.

As shown in fig. 1, a circulation air-supply system for a vacuum environment marshalling operation train according to an embodiment of the present invention includes a pressure sensing unit 10, a control unit, a normal air-supply gas component 20, a first emergency air-supply gas component 30, a second emergency air-supply gas component 40, an air-supply state switching valve 50, an auxiliary air-supply switching valve 60, an air conditioner 70, an exhaust gas recovery processing tank 80, a first power unit 90, a second power unit 100, a recovered gas flow rate adjustment valve 110, a filtering unit, a temperature adjustment unit, and a humidity adjustment unit. In the present embodiment, the first power unit 90 is a blower and the second power unit 100 is a return fan.

The air return machine is respectively connected with the first carriage and the waste gas recovery processing tank 80, the waste gas recovery processing tank 80 is connected with the air conditioner 70 through the recovery gas flow regulating valve 110, and the air conditioner 70 is connected with the blower through the filtering unit, the temperature regulating unit and the humidity regulating unit in sequence. The normal gas supply assembly 20, the first emergency gas supply assembly 30 and the second emergency gas supply assembly 40 are connected with the first car through the gas supply state switch valve 50, the second emergency gas supply assembly 40 is connected with the gas supply state switch valve 50 through the auxiliary gas supply switch valve 60, the gas supply state switch valve 50 is used for achieving the normal gas supply assembly 20, the first emergency gas supply assembly 30 and the second emergency gas supply assembly 40 are respectively disconnected or connected with the first car, and the auxiliary gas supply switch valve 60 is used for achieving the disconnection or connection between the second emergency gas supply assembly 40 and the gas supply state switch valve 50.

The normal gas supply assembly 20 comprises a normal oxygen supply assembly 21 and a normal nitrogen supply assembly 22, the normal oxygen supply assembly 21 and the normal nitrogen supply assembly 22 are connected in parallel and then connected with the gas supply state switch valve 50, the normal oxygen supply assembly 21 comprises a normal gas supply high-pressure oxygen tank 211, a normal oxygen supply pressure reducing valve 212 and a normal oxygen supply flow and pressure sensing assembly 213 which are sequentially connected in series, the normal oxygen supply pressure reducing valve 212 is used for adjusting the oxygen pressure and flow output by the normal gas supply high-pressure oxygen tank 211, and the normal oxygen supply flow and pressure sensing assembly 213 is used for monitoring the flow and pressure of the oxygen output by the normal gas supply high-pressure oxygen tank 211 after pressure adjustment; the normal nitrogen gas supply assembly 22 comprises a normal gas supply high-pressure nitrogen tank 221, a normal nitrogen supply pressure reducing valve 222 and a normal nitrogen supply flow and pressure sensing assembly 223 which are sequentially connected in series, wherein the normal nitrogen supply pressure reducing valve 222 is used for adjusting the pressure and flow of nitrogen gas output by the normal gas supply high-pressure nitrogen tank 221, and the normal nitrogen supply flow and pressure sensing assembly 223 is used for monitoring the flow and pressure of nitrogen gas output by the normal gas supply high-pressure nitrogen tank 221 after pressure adjustment.

The first emergency oxygen supply assembly 30 comprises a first emergency oxygen supply assembly 31 and a first emergency nitrogen supply assembly 32, the first emergency oxygen supply assembly 31 and the first emergency nitrogen supply assembly 32 are connected in parallel and then connected with the air supply state switch valve 50, the first emergency oxygen supply assembly 31 comprises a first emergency air supply high-pressure oxygen tank 311, a first emergency oxygen supply pressure reducing valve 312 and a first emergency oxygen supply flow and pressure sensing assembly 313 which are sequentially connected in series, the first emergency oxygen supply pressure reducing valve 312 is used for adjusting the oxygen pressure and flow output by the first emergency air supply high-pressure oxygen tank 311, and the first emergency oxygen supply flow and pressure sensing assembly 313 is used for monitoring the flow and pressure of the oxygen output by the first emergency air supply high-pressure oxygen tank 311 after pressure regulation; first emergency nitrogen gas supply subassembly 32 includes first emergency gas supply high pressure nitrogen gas jar 321, first emergency supply nitrogen relief pressure valve 322 and first emergency supply nitrogen flow and pressure sensing subassembly 323 that series connection in proper order, and first emergency supplies nitrogen relief pressure valve 322 to be used for adjusting the nitrogen gas pressure and the flow of first emergency gas supply high pressure nitrogen gas jar 321 output, and first emergency supplies nitrogen flow and pressure sensing subassembly 323 to be used for monitoring the flow and the pressure of the nitrogen gas of first emergency gas supply high pressure nitrogen gas jar 321 output after the pressure regulating.

The second emergency gas supply assembly 40 comprises a second emergency oxygen supply assembly 41 and a second emergency nitrogen supply assembly 42, the second emergency oxygen supply assembly 41 and the second emergency nitrogen supply assembly 42 are connected in parallel and then connected with the gas supply state switch valve 50, the second emergency oxygen supply assembly 41 comprises a second emergency gas supply high-pressure oxygen tank 411, a second emergency oxygen supply pressure reducing valve 412 and a second emergency oxygen supply flow and pressure sensing assembly 413 which are sequentially connected in series, the second emergency oxygen supply pressure reducing valve 412 is used for adjusting the oxygen pressure and flow output by the second emergency gas supply high-pressure oxygen tank 411, and the second emergency oxygen supply flow and pressure sensing assembly 413 is used for monitoring the flow and pressure of the oxygen output by the second emergency gas supply high-pressure oxygen tank 411 after pressure adjustment; the emergent nitrogen gas air feed subassembly 42 of second is including the emergent air feed high pressure nitrogen gas jar 421 of second, the emergent nitrogen pressure reducing valve 422 that supplies of second and the emergent nitrogen flow and pressure sensing subassembly 423 that supply of second that series connection in proper order, and the emergent nitrogen pressure and the flow that supply nitrogen pressure reducing valve 422 is used for adjusting the emergent air feed high pressure nitrogen gas jar 421 output of second, and the emergent nitrogen flow and the pressure sensing subassembly 423 of supplying of second are used for monitoring the flow and the pressure of the emergent air feed high pressure nitrogen gas jar 421 output of second after the pressure regulating.

The following is a detailed description of a method for circularly supplying air to a first compartment using the circular air supply system provided by the present invention.

Firstly, the pressure inside the vehicle is monitored through the pressure sensing unit 10, the pressure inside the vehicle specifically comprises total pressure inside the vehicle and oxygen partial pressure, and the control unit calculates and obtains the total pressure change rate of the first compartment according to the total pressure inside the vehicle of the first compartment and judges whether the total pressure change rate exceeds a safety limit value or not.

Then, if the total pressure change rate in the first car is within the safety limit, the gas supply state switching valve 50 is switched to the normal gas supply state, and the circulation gas supply system supplies gas to the first car using the normal gas supply gas assembly. At this time, the high pressure oxygen output from the normal air supply high pressure oxygen tank 211 sequentially passes through the first emergency oxygen supply pressure reducing valve 312 and the first emergency oxygen supply flow and pressure sensing assembly 313 to be output, the high pressure nitrogen output from the normal air supply high pressure nitrogen tank 221 sequentially passes through the first emergency nitrogen supply pressure reducing valve 322 and the first emergency nitrogen supply flow and pressure sensing assembly 323 to be output, the output normal oxygen and normal nitrogen enter the air conditioner 70 to be matched to produce air with specified oxygen partial pressure and total pressure, then the air is filtered by the filtering unit, cooled or heated by the temperature adjusting unit, dehumidified or humidified by the humidity adjusting unit, and then the air is sent into the sealed first compartment at a certain flow rate under the action of the blower, after the human body respiration, the dirty air is sent into the waste gas recovery processing tank 80 under the action of the return fan, the waste gas recovery processing tank 80 processes the water vapor and carbon dioxide therein, the residual oxygen and nitrogen are recovered, the flow of the recovered oxygen and nitrogen is adjusted by the recovered gas flow adjusting valve 110, and the recovered oxygen and nitrogen are mixed and matched with the fresh oxygen and nitrogen output by the normal gas supply assembly in the air conditioner 70 and then are sent into the first compartment to participate in the next cycle.

If the total pressure change rate in the first compartment exceeds the safety limit, the air supply state switch valve is switched to the emergency air supply state to connect the first emergency air supply gas component with the first compartment, at this time, the auxiliary air supply switch valve is closed, the first emergency air supply gas component of the first compartment is used for supplying air to the first compartment, at this time, the high-pressure oxygen output by the first emergency air supply high-pressure oxygen tank 311 sequentially passes through the first emergency oxygen supply pressure reducing valve 312 and the first emergency oxygen supply flow and pressure sensing component 313 and is output, the high-pressure nitrogen output by the first emergency air supply high-pressure nitrogen tank 321 sequentially passes through the first emergency nitrogen supply pressure reducing valve 322 and the first emergency nitrogen supply flow and pressure sensing component 323 and is output, and the output first emergency oxygen, the first emergency nitrogen and the total pressure and oxygen recovered by the waste gas recovery processing tank 80 simultaneously enter the air regulator 70 to be matched to produce air with the specified oxygen partial pressure and total pressure, then the filtered water is sent into the sealed first compartment at a certain flow rate under the action of the blower after being filtered by the filtering unit, cooled or heated by the temperature adjusting unit and dehumidified or humidified by the humidity adjusting unit. At the same time, the total pressure change rate of the first car is monitored, and when the total pressure change rate of the first car gradually decreases and returns to within the safety limit, the gas supply rate of the first emergency gas supply assembly is decreased.

When the total pressure change rate of the first compartment continues to increase, the auxiliary air supply switch valve is opened, the first compartment is supplied with air by using the first emergency air supply gas component and the second emergency air supply gas component of the adjacent second compartment, at this time, the high-pressure oxygen output by the second emergency air supply high-pressure oxygen tank 411 sequentially passes through the second emergency oxygen supply pressure reducing valve 412 and the second emergency oxygen supply flow and pressure sensing component 413 and is output, the high-pressure nitrogen output by the second emergency air supply high-pressure nitrogen tank 421 sequentially passes through the second emergency nitrogen supply pressure reducing valve 422 and the second emergency nitrogen supply flow and pressure sensing component 423 and is output, the output first emergency oxygen, the first emergency nitrogen, the second emergency oxygen, the second emergency nitrogen and the nitrogen recovered by the waste gas recovery processing tank 80 simultaneously enter the air conditioner 70 to be matched to prepare air with specified oxygen partial pressure and total pressure, and the air is filtered by the filtering unit, The temperature adjusting unit cools or heats and the humidity adjusting unit dehumidifies or humidifies the processed product, and then the processed product is sent into the sealed first compartment at a certain flow rate under the action of the air blower.

If the first emergency gas supply assembly of the first carriage and the second emergency gas supply assembly of the second carriage supplement gas simultaneously, when the total pressure change rate of the first carriage leaking gas is gradually reduced and recovered to the safety limit value, the gas supply rate of the second emergency gas supply assembly of the second carriage is reduced. If the total pressure change rate of the first carriage with air leakage is still increased after the first emergency air supply gas assembly of the first carriage and the second emergency air supply gas assembly of the second carriage supplement air simultaneously, the train is emergently stopped to implement subsequent rescue evacuation.

In conclusion, the invention provides a circulating air supply method for a marshalling running train in a vacuum environment, compared with the prior art, the circulating air supply method does not need to introduce external air, has low requirements on the external environment of a train body, can solve the problem of emergency rescue under the condition of air leakage caused by the damage of a certain train body structure in the running process of the marshalling train in the vacuum environment, and can meet the requirement of air supply of a sealed carriage with a large carrying capacity and people carrying requirement.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A circulating gas supply method for a vacuum environment marshalling operation train is characterized by comprising the following steps:

monitoring the pressure change rate in a first carriage in real time, and judging whether the pressure change rate of the first carriage exceeds a set safety threshold value or not;

supplying gas to the first car using the normal gas supply gas assembly when the rate of pressure change is within a set safety threshold;

monitoring the rate of pressure change of the first car using the first emergency gas supply assembly to supply gas to the first car when the rate of pressure change exceeds the set safety threshold;

when the pressure change rate of the first compartment is gradually reduced and is recovered to be within a set safety threshold value, reducing the gas supply rate of the first emergency gas supply assembly;

monitoring the rate of pressure change of the first car using the first emergency gas supply assembly and a second emergency gas supply assembly of a second car to simultaneously supply gas to the first car as the rate of pressure change of the first car continues to increase; when the pressure change rate of the first compartment is gradually reduced and is restored to be within a set safety threshold value, reducing the gas supply rate of the second emergency gas supply assembly; and when the pressure change rate continues to increase, emergency stopping is carried out on the train.

2. The method of claim 1, wherein the step of supplying the first car with the normal supply gas assembly comprises:

preparing normal fresh air with specified oxygen partial pressure and total pressure and sending the normal fresh air with the specified oxygen partial pressure and total pressure into the first compartment;

the method comprises the following steps of (1) recovering dirty air in the first carriage, and treating and recovering the dirty air;

and mixing and matching recycled gas obtained by recycling treatment in the dirty air with normal fresh air in the normal air supply gas assembly and then sending the mixed gas into the first carriage, and repeating the processes to realize normal air supply of the first carriage.

3. The circulating air supply method for a vacuum environment marshalling operation train according to claim 2, wherein after the dirty air in the first car is recovered and the dirty air is processed and recovered, the circulating air supply method further comprises: the flow rates of oxygen and nitrogen in the recovered gas obtained by the recovery treatment from the contaminated air are monitored in real time.

4. The method of claim 2, wherein prior to charging the first car, the method further comprises: and adjusting the oxygen partial pressure and the total pressure of the gas entering the first compartment by using an air conditioner, and filtering, temperature adjusting and humidity adjusting the pressure-adjusted air output by the air conditioner.

5. The method of claim 4, wherein the step of establishing normal fresh air at a specified oxygen partial pressure and total pressure comprises:

providing normal fresh oxygen using a normal supply hyperbaric oxygen tank in the normal supply gas assembly and regulating the pressure and flow of the normal fresh oxygen;

using a normal gas supply high-pressure nitrogen tank in the normal gas supply assembly to provide normal fresh nitrogen and adjusting the pressure and flow of the normal fresh nitrogen;

and inputting the normal fresh oxygen and the normal fresh nitrogen after pressure regulation into an air conditioning device, and matching the normal fresh oxygen and the normal fresh nitrogen through the air conditioning device to prepare normal fresh air with specified oxygen partial pressure and total pressure.

6. The method of claim 5, wherein after the pressure and flow of the normal fresh oxygen are adjusted, the method further comprises: monitoring the flow and pressure of the normal fresh oxygen in real time; and/or after the pressure and the flow of the normal fresh nitrogen are adjusted, the circulating gas supply method further comprises the following steps: and monitoring the flow and the pressure of the normal fresh nitrogen in real time.

7. The method for cyclically supplying gas for a vacuum environment marshalling operating train according to any one of claims 1-6, wherein the supplying gas to the first car using the first emergency gas supply assembly specifically comprises:

providing first emergency fresh oxygen by using a first emergency air supply high-pressure oxygen tank in the first emergency air supply gas assembly and adjusting the pressure and the flow of the first emergency fresh oxygen;

providing first emergency fresh nitrogen by using a first emergency gas supply high-pressure nitrogen tank in the first emergency gas supply assembly and adjusting the pressure and the flow of the first emergency fresh nitrogen;

inputting the first emergency fresh oxygen, the first emergency fresh nitrogen and the recovered nitrogen and oxygen into an air conditioning device, and matching the first emergency fresh oxygen, the first emergency fresh nitrogen and the recovered nitrogen and oxygen through the air conditioning device to prepare the emergency fresh air with the specified oxygen partial pressure and total pressure.

8. The method of claim 7, wherein after the pressure and flow of the first emergency fresh oxygen are adjusted, the method further comprises: monitoring the flow and pressure of the first emergency fresh oxygen in real time; and/or after adjusting the pressure and flow of the first emergency fresh nitrogen gas, the method for recycling gas further comprises: and monitoring the flow and the pressure of the first emergency fresh nitrogen in real time.

9. The method according to any one of claims 1 to 6, wherein the step of simultaneously supplying the first car with the first emergency gas supply assembly and the second emergency gas supply assembly of the second car comprises:

providing first emergency fresh oxygen by using a first emergency air supply high-pressure oxygen tank in the first emergency air supply gas assembly and adjusting the pressure and the flow of the first emergency fresh oxygen;

providing first emergency fresh nitrogen by using a first emergency gas supply high-pressure nitrogen tank in the first emergency gas supply assembly and adjusting the pressure and the flow of the first emergency fresh nitrogen;

providing second emergency fresh oxygen using a second emergency gas supply hyperbaric oxygen tank in the second emergency gas supply assembly and regulating the pressure and flow of the second emergency fresh oxygen;

providing second emergency fresh nitrogen gas by using a second emergency gas supply high-pressure nitrogen gas tank in the second emergency gas supply assembly and adjusting the pressure and the flow of the second emergency fresh nitrogen gas;

and inputting the first emergent fresh oxygen, the first emergent fresh nitrogen, the second emergent fresh oxygen, the second emergent fresh nitrogen and the recovered nitrogen and oxygen into an air conditioning device, and matching the first emergent fresh oxygen, the first emergent fresh nitrogen, the second emergent fresh oxygen, the second emergent fresh nitrogen and the recovered nitrogen and oxygen by the air conditioning device to prepare emergent fresh air with specified oxygen partial pressure and total pressure.

10. The method of claim 9, wherein after the pressure and flow of the second emergency fresh oxygen are adjusted, the method further comprises: monitoring the flow and pressure of the second emergency fresh oxygen in real time; and/or after adjusting the pressure and flow of the second emergency fresh nitrogen, the method for circulating gas supply further comprises: and monitoring the flow and the pressure of the second emergency fresh nitrogen in real time.

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