CN214037865U - Gas distribution valve assembly and oxygen generation system - Google Patents
Gas distribution valve assembly and oxygen generation system Download PDFInfo
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- CN214037865U CN214037865U CN202022974114.XU CN202022974114U CN214037865U CN 214037865 U CN214037865 U CN 214037865U CN 202022974114 U CN202022974114 U CN 202022974114U CN 214037865 U CN214037865 U CN 214037865U
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Abstract
The utility model relates to a gaseous manufacture equipment technical field, in particular to gaseous distribution valve subassembly and system oxygen system. The oxygen generation system comprises an oxygen generation assembly and a controller, wherein the oxygen generation assembly conveys oxygen to an aerobic part through a gas distribution valve assembly, and the gas distribution valve assembly comprises: the oxygen generation unit sends oxygen to a user aerobic place through the pipeline A, the self-locking valve and the external pipeline, and the oxygen generation unit is also provided with a pressure acquisition unit for acquiring air pressure in the external pipeline; the self-locking valve controls the on-off switching between the pipeline A and the external pipeline. The utility model discloses a from locking-type valve can realize the state switching of valve route through pulse signal, no matter in continuous still pulse oxygen suppliment mode, need not last the electric energy in order to maintain its certain access state from locking-type valve, has saved the electric energy greatly, and has reduced the loss to valve life-span, has promoted entire system's life.
Description
Technical Field
The utility model relates to a gaseous manufacture equipment technical field, in particular to gaseous distribution valve subassembly and system oxygen system.
Background
In the small oxygen generator, the oxygen supply mode for the user can be continuous and pulse, and the continuous oxygen supply is that the user continuously supplies oxygen to the user after opening the machine; however, in order to save energy and power, especially when the user carries the oxygen generator to outdoor activities, it is desirable to save power consumption as much as possible, and at this time, the user can be supplied with oxygen in a pulse mode, that is, the breathing frequency of the user is detected and oxygen is supplied according to the breathing frequency of the user.
The selection of the gas supply mode (continuous or pulsed) between the oxygen generation module and the user is usually made by opening and closing a valve. In the continuous oxygen supply mode, the valve needs to be opened continuously to communicate the oxygen generation assembly with the user and supply oxygen to the user; when the pulse oxygen supply mode is adopted, the system detects the respiratory frequency of a user and supplies oxygen to the user according to the respiratory frequency of the user, and in each oxygen supply period, the oxygen is supplied to the user only in the most effective oxygen absorption stage of the user, so that the oxygen generation assembly is communicated with the user only in a small amount of time, and the valve is closed in more time.
In the prior art, in the two states of opening and closing, one state is usually required to be continuously powered on for keeping, but for a user, either the continuous state or the pulse state can become a frequently used state, so that power is continuously consumed in one mode state or a large amount of time is consumed, which not only wastes power, but also greatly influences the service life of the valve.
SUMMERY OF THE UTILITY MODEL
According to the not enough of above prior art, the utility model provides a gas distribution valve subassembly and system oxygen system adopts from locking-type valve, realizes the route switching from locking-type valve response to pulse signal, so no matter the oxygenerator is when any one is in long-term use state in continuous mode or the pulse mode dual mode, can not cause the waste of electric quantity, the valve all need not last circular telegram, has improved the problem that the valve life is short among the prior art greatly, has also improved the user of oxygenerator and has used experience.
The utility model discloses an aspect provides: the utility model provides a gaseous distribution valve subassembly for in the oxygenerator system, including system oxygen subassembly and controller in the system oxygen, system oxygen subassembly and controller are through wired or wireless connection, gaseous distribution valve subassembly sets up between system oxygen subassembly and user, gaseous distribution valve subassembly includes:
the self-locking valve comprises at least one first air inlet and at least one air outlet; and the self-locking valve can complete the switching between opening and closing of the air inlet and the air vent by receiving pulse signals, for example, one pulse is used for realizing opening, and then the other pulse is used for realizing closing, and continuous power supply is not needed in the continuous opening or continuous closing process.
One end of the pipeline A is communicated with the oxygen outlet end of the oxygen generation assembly, and the other end of the pipeline A is communicated with the first air inlet; and a process for the preparation of a coating,
one end of the external pipeline is connected with the air outlet of the self-locking valve, and the other end of the external pipeline is communicated to a user aerobic place; and a process for the preparation of a coating,
the pressure acquisition unit is used for acquiring air pressure in the external pipeline and sending an acquired signal to the controller;
the self-locking valve responds to a pulse control signal of the controller to realize on-off switching between the pipeline A and the external pipeline.
Further, the pressure acquisition unit is arranged in the external pipeline; or the external pipeline is directly or indirectly connected with a branch, and a pressure acquisition unit is arranged in the branch; or an outward convex cavity is arranged on the external pipeline, and a pressure acquisition unit is arranged in the cavity.
Further, the gas distribution valve assembly further comprises a pressure relief valve;
the pressure relief valve is arranged in the external pipeline, or in a cavity or a pipeline communicated with the external pipeline, and is used for relieving pressure of the space where the pressure acquisition unit is located.
Further, the oxygen generation assembly comprises a gas storage tank and an oxygen generation unit, the oxygen generation unit is used for preparing oxygen, and the gas storage tank is communicated with an oxygen outlet of the oxygen generation unit;
the oxygen outlet end of the oxygen generation assembly is arranged between the gas storage tank and the oxygen generation unit;
or the oxygen outlet end of the oxygen generation component is directly connected with the gas storage tank;
or the oxygen outlet end of the oxygen generation assembly is connected with the oxygen outlet of the oxygen generation unit.
Further, the self-locking valve is a self-holding type electromagnetic valve.
Further, the self-locking valve is at least a two-position three-way valve and also comprises a second air inlet;
the gas distribution valve assembly further comprises:
one end of the pipeline B is not directly communicated with the outside, and the other end of the pipeline B is communicated with the second air inlet;
the pressure acquisition unit is arranged in the pipeline B, or the pressure acquisition unit is arranged in a pipeline communicated with the pipeline B and is used for detecting the air pressure of the external pipeline or the air pressure at the communication part of the external pipeline and the pipeline B and sending an air pressure signal to the controller;
the self-locking valve controls the switching of at least two intercommunications through pulse signals, and the at least two intercommunications are respectively the intercommunication from the first air inlet to the air outlet and the intercommunication from the second air inlet to the air outlet.
Further, the self-locking valve is a valve which is formed by combining a pneumatic valve and/or an electromagnetic valve into a whole and responds to pulse signals to realize the switching of the passages between the plurality of air inlets and the air vents.
Further, the gas distribution valve assembly further comprises a pressure relief valve;
the pressure relief valve is arranged in the self-locking valve and communicated with the pipeline B;
or the pressure relief valve is arranged in the pipeline B and used for relieving pressure of the pipeline B;
or the pressure relief valve is arranged in a pipeline communicated with the pressure acquisition unit and used for reducing the pressure of the space where the pressure acquisition unit is located.
On the other hand, the utility model also provides an oxygen generation system, which comprises an oxygen generation component, a controller and the gas distribution valve component;
the oxygen generation assembly is used for generating oxygen and supplying the oxygen to a user through the gas distribution valve assembly;
the gas distribution valve assembly is used for collecting gas pressure information, sending the gas pressure information to the controller and responding to an instruction sent by the controller to distribute the gas paths;
the controller is in communication connection with the gas distribution valve assembly and the oxygen generation assembly.
The utility model discloses following beneficial effect has: the utility model discloses an in the system oxygen system that has two kinds of modes of pulse oxygen suppliment mode and continuous oxygen suppliment mode, adopt from locking-type valve, can realize the state switching of valve route through pulse signal, in-process that any one kind mode lasts goes on, all need not continuously obtain the electric energy in order to maintain its certain route state from locking-type valve. Therefore, compared with the condition that the valve adopted in the prior art has to have one state in a connection state or a disconnection state and needs to continuously obtain electric quantity to maintain, the electric energy is greatly saved, the loss of the service life of the valve is reduced, the service life of the whole system is prolonged, and the user experience is improved.
Drawings
FIG. 1 is a schematic diagram illustrating an embodiment of a gas distribution valve assembly provided by the present invention;
fig. 2 is a schematic view of the combination of parts in another embodiment provided by the present invention;
fig. 3 is an electrical schematic diagram of another embodiment provided by the present invention;
FIG. 4 is a schematic diagram of an oxygen generation system provided by the present invention;
in the figure: 100. oxygen generation assembly 2, controller 300, gas distribution valve assembly 301, self-locking valve 302, pipeline A303, external pipeline 304, pressure acquisition unit 305, pressure relief valve 306, pipeline B4 and user.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example (b):
along with the continuous improvement and improvement of living standard of people and the gradual enhancement of the demand for health, oxygen inhalation will gradually become an important means in family and community rehabilitation, and oxygen generating equipment also develops towards the direction of more fitting with the demand of users, for example, the volume is smaller and smaller, and the power consumption is lower and lower.
At present, in order to reduce power consumption as much as possible, the prior art has been to adjust the frequency of supplying oxygen to the user by detecting the breathing frequency of the user, for example, collecting the pressure change of the pressure sensor to the user when inhaling or exhaling. However, in some cases, oxygen may be continuously supplied when a large oxygen concentration is required for oxygen therapy regardless of power and time saving and a severe patient. Namely, the utility model provides an oxygen generation system for can provide two kinds of modes oxygen suppliments of continuous mode and pulse mode simultaneously.
As shown in fig. 1, the present invention provides a gas distribution valve assembly, which is used in the above oxygen generator system, wherein the oxygen generator system comprises an oxygen generator assembly 100 and a controller 2, the oxygen generator assembly 100 can be used in various forms for generating oxygen, and the oxygen generation manner can be various, for example, cryogenic process (cryogenic rectification process), pressure swing adsorption process, membrane separation process, etc., in this embodiment, the oxygen generator assembly can be based on molecular sieve adsorption principle, such as comprising molecular sieve and air compression unit. The controller 2 may be of various types, such as a programmable control module, a manual switching device, a pneumatic control device, etc., in this embodiment, a programmable control module is adopted, which can receive the pressure signal collected by the pressure collecting unit and send out a control signal, so that the high integration and the stable performance are achieved.
the self-locking valve 301, the self-locking valve 301 comprises at least one first air inlet and at least one air outlet; and a process for the preparation of a coating,
a pipeline A302, one end of which is communicated with the oxygen outlet end of the oxygen generating component 100, and the other end is communicated with the first air inlet; and a process for the preparation of a coating,
one end of the external pipeline 303 is connected with the air outlet of the self-locking valve 301, and the other end of the external pipeline is communicated to an aerobic part of the user 4; and a process for the preparation of a coating,
the pressure acquisition unit 304 is used for acquiring the air pressure in the external pipeline 303 and sending acquired signals to the controller 2; the pressure acquisition unit 304 acquires the air pressure in the pipeline, when a user inhales air, negative pressure is formed in the external pipeline 303, the pressure acquisition unit 304 transmits a negative pressure signal to the controller 2, and the controller 2 responds to the signal and adjusts the frequency of supplying oxygen to the user in a pulse oxygen supply mode.
The self-locking valve 301 responds to a pulse control signal of the controller 2 to realize on-off switching between the pipeline A302 and the external pipeline 303. The self-locking valve 301 can complete the switching between the air inlet and the air outlet by receiving a pulse signal, for example, one pulse is used for opening, and then the other pulse is used for closing, and continuous power supply is not needed in the continuous opening or continuous closing process.
For users, any one of the continuous state and the pulse state can become a frequently-used state, and in the continuous oxygen supply mode, the valve needs to be continuously opened to communicate the oxygen generation assembly with the users so as to supply oxygen to the users; in the pulse oxygen supply mode, the system detects the breathing frequency of the user and supplies oxygen to the user according to the breathing frequency of the user, and in each oxygen supply period, only a little time is used for supplying oxygen to the user, and at the moment, the valve is in a closed state for more time. Oxygen production systems are therefore provided that provide both continuous and pulsed modes, both of which may be in a frequently used state, i.e., the valve may be open for a long period of time, and may be more closed. When any mode is continuously carried out, the self-locking valve 301 does not need to continuously obtain electric energy to maintain a certain opening and closing state, and compared with the situation that one state of the valve adopted in the prior art needs to continuously obtain electric energy to maintain in connection or disconnection, the self-locking valve greatly saves electric energy, reduces the loss of the service life of the valve, prolongs the service life of the whole system and improves the user experience.
The pressure acquisition unit 304 is arranged in the external pipeline 303 to detect the air pressure change in the external pipeline 303; in one embodiment, the external pipeline 303 may also be directly or indirectly connected to a branch in which the pressure collecting unit 304 is disposed; or in another embodiment, the external pipe 303 is provided with a cavity protruding outwards, and the pressure acquisition unit 304 is arranged in the cavity. The pressure acquisition unit 304 can monitor the breathing state and frequency of the user as long as it can directly acquire the change of the air pressure in the external pipeline 303.
Similarly, if the end of the external pipe 303 near the user is blocked, the pressure acquisition unit 304 can detect the high pressure between the position of the pressure acquisition unit 304 in the external pipe 303 and the blocking point.
Because pressure pick-up unit 304 typically employs a pressure sensor that is susceptible to performance degradation if subjected to excessive pressure conditions, and even directly renders it unusable, in another embodiment, to allow for protection of pressure pick-up unit 304, gas distribution valve assembly 300 further includes a pressure relief valve 305;
the pressure relief valve 305 is disposed in the external pipeline 303, or in a cavity or a pipeline communicated with the external pipeline 303, and is configured to relieve pressure in a space where the pressure collecting unit 304 is located, so as to ensure safety of the pressure collecting unit. The pressure relief valve 305 may be a check valve, or a backflow prevention control valve, or a pressure reducing valve, or a safety valve, or a pressure maintaining valve, or a pneumatic on/off device responsive to a control signal from a controller.
In order to ensure sufficient and stable supply of oxygen, in another embodiment, the oxygen generation assembly 100 includes a gas storage tank and an oxygen generation unit, the oxygen generation unit is used for preparing oxygen, and the gas storage tank is communicated with an oxygen outlet of the oxygen generation unit;
the oxygen outlet end of the oxygen generation assembly 100 is arranged between the gas storage tank and the oxygen generation unit;
or the oxygen outlet end of the oxygen generation component is directly connected with the gas storage tank;
or the oxygen outlet end of the oxygen generation component is connected with the oxygen outlet of the oxygen generation unit. From a spatial layout perspective, any of the above approaches may be employed as desired.
The self-locking valve 301 is a self-holding solenoid valve, and in one embodiment, a micro self-holding solenoid valve of Xian, Inc. of fluid technology can be used as the self-locking valve.
Under the condition of meeting the two states of the continuous mode and the pulse mode, the self-locking valve 301 does not consume too much power, the service life of the valve is greatly prolonged, but when the external pipeline 303 is blocked close to a user end, the internal high-pressure oxygen supplied into the external pipeline is changed into high pressure, which possibly damages the pressure acquisition unit 304 or causes the pressure acquisition unit 304 to drift due to high pressure, so that the external pipeline is not accurate any more, in order to improve the problem, in one embodiment, the self-locking valve 301 is at least a two-position three-way valve and further comprises a second air inlet, wherein the self-locking valve 301 is taken as the two-position three-way valve; specifically, as shown in fig. 2 to 3, the gas distribution valve assembly 300 further includes:
a pipeline B306, one end of which is not directly communicated with the outside and the other end of which is communicated with the second air inlet;
the pressure acquisition unit 304 is arranged in the pipeline B306, or the pressure acquisition unit 304 is arranged in a pipeline communicated with the pipeline B306, and is used for detecting the air pressure in the external pipeline or the air pressure at the communication part of the external pipeline 303 and the pipeline B306, and sending an air pressure signal to the controller 2, and after the pipeline B is communicated with the external pipeline, the air pressure detection of the external pipeline can be acquired by the pressure acquisition unit;
the self-locking valve 301 controls the switching of two communications through pulse signals, the two communications are respectively the communication from the first air inlet to the air outlet and the communication from the second air inlet to the air outlet. Thus, the pipeline B306 is directly communicated with the user but is not directly communicated with the pipeline A302, namely, the communication between the user 4 and the pressure acquisition unit 304 or the communication between the user 4 and the oxygen generation assembly 100 is realized through the two-position three-way self-locking valve 301.
Through switching over that pipeline A302 and pipeline B306 do not put through simultaneously, realized that the pressure acquisition unit 304 that is linked together with pipeline B306 is direct not put through with system oxygen subassembly 100 mutually, satisfied system oxygen breathing frequency that can detect the user, can also protect pressure acquisition unit 304 when being close to user's external pipeline 301 jam simultaneously, reduced pressure acquisition unit 304 because external pipeline 303 blocks up and by the probability of high-pressure damage, or because of the drift that this kind of high pressure leads to and then detect inaccurate probability, the repair rate has been reduced, user experience has been promoted.
In other embodiments, if the self-locking valve 301 is a valve that is larger than a two-position three-way valve, it can be ensured that two communications can be achieved: the first air inlet is communicated with the air outlet, and the second air inlet is communicated with the air outlet, so that the two communications can be switched with each other, namely the first air inlet and the second air inlet can not be communicated with each other.
Under this condition, when external pipeline 301 is close to user's one end and the foreign matter blocks up or when knoing unable ventilation (this kind of condition, because external pipeline 306 is longer usually, and is thinner, so often take place), because oxygen generation subassembly 100 gives the oxygen suppliment to the user, be the high pressure between pipeline A302 and the external pipeline 303, switch the communicating pipe way of self-locking valve 301 through controller 2, after making pipeline B306 and external pipeline 303 communicate, high-pressure gas pours into pipeline B306 again from external pipeline 303, pressure acquisition unit 304 can gather the high pressure this moment, because pressure acquisition unit 304 does not link together with pipeline A this moment, just can not have the space that continuous high-pressure oxygen supplied pressure acquisition unit 304 to be located, so can not lead to the pressure acquisition unit 304 to be damaged by the continuous high pressure.
After detecting the high pressure, the controller 2 may control the self-locking valve 301 to always keep the pipeline B306 and the external pipeline 303 in communication until the end of the blockage fault processing, which is realized by the controller 2 through the operation program.
In one embodiment, the self-locking valve 301 is a valve that is integrated by pneumatic and/or solenoid valves and switches the path between a plurality of air inlets and air outlets in response to a pulse signal.
To further protect the pressure acquisition unit 304 from high pressure oxygen damage due to blockage of the external piping 303, the gas distribution valve assembly 300 further includes a pressure relief valve 305;
the pressure relief valve 305 is arranged in the self-locking valve 301, and the pressure relief valve 305 is communicated with the pipeline B306, so that the space can be saved;
alternatively, the pressure relief valve 305 is disposed in the pipeline B306 and is used for relieving the pressure of the pipeline B306;
alternatively, the pressure relief valve 305 is disposed in a pipeline communicating with the pressure collecting unit 304, and is configured to reduce the pressure in the space where the pressure collecting unit 304 is located.
The pressure relief valve 305 may be a check valve, or a backflow prevention control valve, or a pressure reducing valve, or a safety valve, or a pressure maintaining valve, or a pneumatic on/off device responsive to a control signal from a controller.
The utility model also provides an oxygen generation system, as shown in fig. 4, comprising an oxygen generation assembly 100, a controller 2 and a gas distribution valve assembly 300 in any one of the above embodiments;
the gas distribution valve assembly 300 is used for collecting gas pressure information, sending the gas pressure information to the controller 2, and responding to a pulse signal instruction sent by the controller 2 to switch gas paths;
The oxygen generation system provides two modes of continuous and pulse, and the pulse mode and the continuous mode can be frequently used, so that the valve for controlling the switching of the two modes can be opened for a long time or closed for more time. Therefore, in the process that any mode is continuously carried out, the self-locking valve 301 does not need to continuously obtain electric energy to maintain the opening or closing state of the self-locking valve, and compared with the situation that one state of the valve adopted in the prior art needs to continuously obtain electric energy to maintain in the connection state or the disconnection state, the self-locking valve greatly saves the electric energy, reduces the loss of the service life of the valve, and improves the service life of the whole system and the user experience.
The above is the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures or equivalent processes that the contents of the specification and the drawings are used for conversion, or directly or indirectly applied to other related technical fields, all the same principles are included in the patent protection scope of the present invention.
Claims (9)
1. A gas distribution valve assembly for use in an oxygen generator system, wherein the oxygen generator system comprises an oxygen generating assembly and a controller, the oxygen generating assembly is connected with the controller by wire or wirelessly, the gas distribution valve assembly is connected with the controller by wire or wirelessly, the oxygen generating assembly delivers oxygen to an aerobic place through the gas distribution valve assembly, and the gas distribution valve assembly comprises:
the self-locking valve comprises at least one first air inlet and at least one air outlet; and a process for the preparation of a coating,
one end of the pipeline A is communicated with the oxygen outlet end of the oxygen generation assembly, and the other end of the pipeline A is communicated with the first air inlet; and a process for the preparation of a coating,
one end of the external pipeline is connected with the air outlet of the self-locking valve, and the other end of the external pipeline is communicated to a user aerobic place; and a process for the preparation of a coating,
the pressure acquisition unit is used for acquiring air pressure in the external pipeline and sending an acquired signal to the controller;
the self-locking valve responds to a pulse control signal of the controller to realize on-off switching between the pipeline A and the external pipeline.
2. The gas distribution valve assembly of claim 1, wherein: the pressure acquisition unit is arranged in the external pipeline; or the external pipeline is directly or indirectly connected with a branch, and a pressure acquisition unit is arranged in the branch; or an outward convex cavity is arranged on the external pipeline, and a pressure acquisition unit is arranged in the cavity.
3. The gas distribution valve assembly of claim 1, wherein: the gas distribution valve assembly further comprises a pressure relief valve;
the pressure relief valve is arranged in the external pipeline, or in a cavity or a pipeline communicated with the external pipeline, and is used for relieving pressure of the space where the pressure acquisition unit is located.
4. The gas distribution valve assembly of claim 1, wherein: the oxygen generation assembly comprises a gas storage tank and an oxygen generation unit, the oxygen generation unit is used for preparing oxygen, and the gas storage tank is communicated with an oxygen outlet of the oxygen generation unit;
the oxygen outlet end of the oxygen generation assembly is arranged between the gas storage tank and the oxygen generation unit;
or the oxygen outlet end of the oxygen generation component is directly connected with the gas storage tank;
or the oxygen outlet end of the oxygen generation assembly is connected with the oxygen outlet of the oxygen generation unit.
5. The gas distribution valve assembly of claim 1, wherein: the self-locking valve is a self-holding type electromagnetic valve.
6. The gas distribution valve assembly of claim 1, wherein: the self-locking valve is at least a two-position three-way valve and also comprises a second air inlet;
the gas distribution valve assembly further comprises:
one end of the pipeline B is not directly communicated with the outside, and the other end of the pipeline B is communicated with the second air inlet;
the pressure acquisition unit is arranged in the pipeline B, or the pressure acquisition unit is arranged in a pipeline communicated with the pipeline B and is used for detecting the air pressure in the external pipeline or the air pressure at the communication part of the external pipeline and the pipeline B and sending an air pressure signal to the controller;
the self-locking valve controls the switching of at least two intercommunications through pulse signals, and the at least two intercommunications are respectively the intercommunication from the first air inlet to the air outlet and the intercommunication from the second air inlet to the air outlet.
7. The gas distribution valve assembly of claim 6, wherein: the gas distribution valve assembly further comprises a pressure relief valve;
the pressure relief valve is arranged in the self-locking valve and communicated with the pipeline B;
or the pressure relief valve is arranged in the pipeline B and used for relieving pressure of the pipeline B;
or the pressure relief valve is arranged in a pipeline communicated with the pressure acquisition unit and used for reducing the pressure of the space where the pressure acquisition unit is located.
8. The gas distribution valve assembly of claim 1, wherein: the self-locking valve is a valve which is formed by combining a pneumatic valve and/or an electromagnetic valve into a whole and responds to pulse signals to realize the switching of the passages between a plurality of air inlets and a plurality of air outlets.
9. An oxygen generation system, characterized in that: comprising an oxygen generation assembly, a controller and a gas distribution valve assembly according to any one of claims 1 to 8;
the oxygen generation assembly is used for generating oxygen and supplying the oxygen to an aerobic place through the gas distribution valve assembly;
the gas distribution valve assembly is used for collecting gas pressure information, sending the gas pressure information to the controller and responding to a pulse signal instruction sent by the controller to switch the gas path;
the controller is in communication connection with the gas distribution valve assembly and the oxygen generation assembly.
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| CN202022974114.XU CN214037865U (en) | 2020-12-11 | 2020-12-11 | Gas distribution valve assembly and oxygen generation system |
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| CN202022974114.XU CN214037865U (en) | 2020-12-11 | 2020-12-11 | Gas distribution valve assembly and oxygen generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864645A (en) * | 2021-08-25 | 2021-12-31 | 上海空间推进研究所 | Blowing system for rail-controlled engine ground test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864645A (en) * | 2021-08-25 | 2021-12-31 | 上海空间推进研究所 | Blowing system for rail-controlled engine ground test |
| CN113864645B (en) * | 2021-08-25 | 2023-10-13 | 上海空间推进研究所 | Blowing system for ground test of rail control engine |
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