CN210728924U - Waste gas recovery experimental system - Google Patents
Waste gas recovery experimental system Download PDFInfo
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- CN210728924U CN210728924U CN201921460324.8U CN201921460324U CN210728924U CN 210728924 U CN210728924 U CN 210728924U CN 201921460324 U CN201921460324 U CN 201921460324U CN 210728924 U CN210728924 U CN 210728924U
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Abstract
The utility model discloses a waste gas recovery system, the embodiment of the utility model provides an in the vacuum/pressurization experimental system that sets up, increase the waste gas recovery unit, this waste gas recovery unit inserts the one end of the vacuum unit of this experimental system, receives the waste gas that the experiment produced and stores the recovery gas cylinder of setting, like this, the embodiment of the utility model provides a under the condition that provides the vacuum/pressurization operating mode of experiment, realize the recovery to exhaust gas.
Description
Technical Field
The utility model relates to an experiment technical field, in particular to waste gas recovery system.
Background
Space experiments performed on the satellite platform provide a large amount of experimental data and experimental results for various fields, and therefore, various experiments of different types are performed on the satellite platform. The cost of performing the experiment on the satellite platform is high, including the launching cost, the experiment energy cost, the operation cost in the space orbit, and the like. In order to reduce the cost of research experiment, the principle of low cost and high reliability is followed as much as possible in the aspect of experiment design and planning, and the experiment system arranged in the satellite platform completes a plurality of different experiments as much as possible, so that when the experiment system is arranged, the guidance idea that the special experiment system is closed to the general experiment system is adopted, and the function of the arranged experiment system is expanded as much as possible. Furthermore, in consideration of the complexity of the satellite platform environment, the provided experimental system needs to avoid the dependence on the external environment as much as possible.
A vacuum and pressurization system may be constructed in the satellite platform for performing vacuum and pressurization space experiments. However, when the experiment is completed under the vacuum and/or pressurization working conditions of the satellite platform, the experiment is required to be performed by depending on a primary vacuum or waste gas interface provided by the external environment, if the gas is directly discharged to a waste gas system of the satellite platform, the waste of the gas is caused, the gas transportation cost of the satellite platform is increased, and the gas cylinder for loading the gas required by the experiment is frequently replaced, so that the experiment is not easy to implement.
Similarly, the vacuum and pressurization system constructed on the ground can directly discharge the waste gas into the environment when the experiment is completed under the vacuum and/or pressurization working condition, thereby causing the waste of the gas and the pollution of the gas to the environment.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides an exhaust gas recovery experimental system, this system can be under the condition of the vacuum/pressurization operating mode that provides the experiment, realizes the recovery to exhaust gas.
The embodiment of the utility model provides a realize like this:
an exhaust gas recovery system comprising: an experimental chamber, a vacuum unit, a gas storage and supply unit, and a waste gas recovery unit, wherein,
the gas storage and supply unit is connected into the experimental cavity through a gas inlet, and gas is input into the experimental cavity through the gas inlet until the pressure of the experimental cavity reaches a set value;
one end of the vacuum unit is connected into a gas outlet of the experiment cavity, the other end of the vacuum unit is connected into the waste gas recovery unit, the experiment cavity is vacuumized before pressurization, and after the pressurization experiment is completed, the waste gas is recovered into the waste gas recovery unit;
the waste gas recovery unit is provided with the recovery gas cylinder, and the waste gas recovery unit inserts in the other end of vacuum unit, receives the waste gas of vacuum unit input and stores in retrieving the gas cylinder.
Further comprising: the gas recovery and reuse unit and the waste gas recovery unit also comprise a four-way switch, wherein,
the four-way switch is respectively connected with the other end of the vacuum unit and the other end of the gas recovery and multiplexing unit;
one end of the gas recovery and multiplexing unit is connected to the gas storage and supply unit, and the recovery gas in the experiment cavity is recovered through the vacuum unit through the opening and closing of the four-way switch and is input into the gas storage and supply unit through the gas recovery and multiplexing unit to be stored.
The exhaust gas recovery unit includes: the four-way switch is connected in series to a second booster pump, a fourth electromagnetic valve and a recovery gas cylinder, when the second booster pump receives the waste gas input by the vacuum unit and stores the waste gas into the recovery gas cylinder, the second booster pump is opened to boost the waste gas, and the fourth electromagnetic valve is opened to enable the boosted waste gas to be introduced into the recovery gas cylinder.
And a third stop valve is arranged between the recovery gas cylinder and the fourth electromagnetic valve and used for stopping the waste gas flowing into the recovery gas cylinder.
The four-way switch in the waste gas recovery unit is also provided with a concentration sensor for detecting the concentration of the waste gas, and when the concentration of the waste gas reaches a set value, the second booster pump and the fourth electromagnetic valve are closed to stop the waste gas from flowing into the recovery gas cylinder.
The waste gas recovery unit also comprises a pressure sensor for recovering the gas cylinder, which is arranged between the third stop valve and the recovered gas cylinder and used for monitoring the pressure of the recovered gas cylinder.
One way switch of the other end of the four-way switch of the waste gas recovery unit for opening and closing the vacuum unit is also provided with a temperature sensor of the vacuum unit and a fifth electromagnetic valve, the temperature sensor of the vacuum unit monitors the temperature of waste gas flowing into the waste gas recovery unit, and when the temperature reaches a set value, the fifth electromagnetic valve is closed to stop the waste gas recovery unit from recovering the waste gas.
As seen above, the embodiment of the utility model provides an in the vacuum/pressurization experimental system that sets up, increase the waste gas recovery unit, this waste gas recovery unit inserts the one end of the vacuum unit of this experimental system, receives the waste gas that the experiment produced and stores the recovery gas cylinder of setting, like this, the embodiment of the utility model provides a under the condition of the vacuum/pressurization operating mode that provides the experiment, realize the recovery to exhaust gas.
Drawings
Fig. 1 is a schematic structural view of an exhaust gas recovery experimental system provided in an embodiment of the present invention;
fig. 2 is a flowchart of an implementation method for an exhaust gas recovery experiment provided by an embodiment of the present invention.
Reference numerals
101-Experimental chamber
1011-vacuum gauge unit
1012-pressure gauge unit
102-vacuum Unit
1021-mechanical pump
1022-third electronic valve
1023-filter
1024-molecule pump
1025-fourth electronic valve
1026-one-way valve of mechanical pump
103-gas storage and supply unit
1031-gas cylinder
1032-first stop valve
1033-pressure reducing valve
1034 second stop valve
1035-first solenoid valve
1036-inflating one-way valve
1037 first pressure sensor
1038-second pressure sensor
1039 safety valve
104-gas recovery and reuse unit
1041-booster pump
1042-pressure stabilizing bottle
1043-second electrovalve
1044-third pressure sensor
105-waste gas recovery unit
1051-recovery gas cylinder
1052-four-way switch
1053-second booster pump
1054-fourth electromagnetic valve
1055-third stop valve
1056-concentration sensor
1057-pressure sensor of recovery gas cylinder
1058-temperature sensor of vacuum unit
1059-fifth solenoid valve
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples.
The embodiment of the utility model adds a waste gas recovery unit in the vacuum/pressurization experiment system, the waste gas recovery unit is connected to one end of the vacuum unit of the experiment system, receives waste gas generated by the experiment and stores the waste gas into a recovery gas cylinder,
therefore, the embodiment of the utility model provides a under the condition that provides the vacuum/pressurization operating mode of experiment, realize the recovery to exhaust gas.
The embodiment of the utility model provides a waste gas recovery system who sets up can use subaerial, also can use in the satellite platform. Whether applied to a satellite platform or applied to the ground, the waste gas can be effectively recycled after pressurization or/and vacuum experiments are realized. The following description will be made in detail by taking an example of how the exhaust gas recovery system applied to the satellite platform performs the exhaust gas recovery.
Fig. 1 is the embodiment of the utility model provides a waste gas recovery experimental system schematic structure, this system sets up in the satellite platform, include: an experimental chamber 101, a vacuum unit 102, a gas storage and supply unit 103, and an exhaust gas recovery unit 105, wherein,
the gas storage and supply unit 103 is connected to the experimental chamber 101 through a gas inlet, and gas is input into the experimental chamber 101 through the gas inlet until the pressure of the experimental chamber 101 reaches a set value;
one end of the vacuum unit 102 is connected to a gas outlet of the experiment cavity 101, the other end is connected to the waste gas recovery unit 105, the experiment cavity 101 is vacuumized before pressurization, and after the pressurization experiment is completed, the waste gas is recovered to the waste gas recovery unit 105;
the exhaust gas recovery unit 105 is provided with a recovery gas cylinder 1051, and the exhaust gas recovery unit 105 is connected to the other end of the vacuum unit 102, receives the exhaust gas input by the vacuum unit 102, and stores the exhaust gas in the recovery gas cylinder 1051.
In the system, a gas recovery and multiplexing unit 104 is further included, a four-way switch 1052 is further included in the waste gas recovery unit 105, the four-way switch 1052 is respectively connected with the other end of the vacuum unit 102, and the other end of the gas recovery and multiplexing unit 104 is connected; one end of the gas recycling and multiplexing unit 104 is connected to the gas storage and supply unit 103, and the recycling gas in the experimental chamber 101 is recycled by the vacuum unit 102 through the opening and closing of the four-way switch 1052, and is input into the gas storage and supply unit 103 through the gas recycling and multiplexing unit 104 for storage.
In this system, the exhaust gas recovery unit 105 includes: the four-way switch 1052 is connected in series to the second booster pump 1053, the fourth electromagnetic valve 1054 and the recovery gas cylinder 1051, when the second booster pump 1053 receives the exhaust gas input by the vacuum unit 102 and stores the exhaust gas in the recovery gas cylinder 1051, the second booster pump 1053 is opened to boost the pressure of the exhaust gas, and the fourth electromagnetic valve 1054 is opened to introduce the boosted exhaust gas into the recovery gas cylinder 1051.
In this system, a third shutoff valve 1055 is further provided between the recovery gas cylinder 1051 and the fourth solenoid valve 1054, and shuts off the exhaust gas flowing into the recovery gas cylinder 1051.
In this system, the four-way switch 1052 in the exhaust gas recovery unit 105 further includes a concentration sensor 1056 that detects the concentration of the exhaust gas, and when the concentration of the exhaust gas reaches a set value, the second booster pump 1053 and the fourth solenoid valve 1054 are closed to stop the flow of the exhaust gas into the recovery cylinder 1051.
Here, a set value may be set as a concentration value of the gas cylinder 1031 in the gas storage and supply unit 103, and when the set value is reached, which proves that the experiment chamber 101 is cleaned or that the excess gas generated by the experiment is exhausted, the second booster pump 1053 and the fourth solenoid valve 1054 are turned off, so that the remaining gas is compressed back into the gas cylinder 1031 in the gas storage and supply unit 103 through the gas recovery and reusing unit 104.
Here, it is also possible to set the set value to 0, and when the set value 0 is reached and the vacuum value inside the experimental chamber 101 is measured to reach the set initial target vacuum value, it is proved that the gas inside the experimental chamber 101 is compressed into the recovery gas cylinder 1051.
In this system, the exhaust gas recovery unit 105 further includes a recovery cylinder pressure sensor 1057, disposed between the third stop valve 1055 and the recovery cylinder 1051, which monitors the pressure of the recovery cylinder 1051.
In this system, the one-way switch of the four-way switch 1052 at the other end of the vacuum unit 102 in the exhaust gas recovery unit 105 is further provided with a temperature sensor 1058 and a fifth solenoid valve 1059 of the vacuum unit, the temperature sensor 1058 of the vacuum unit monitors the temperature of the exhaust gas flowing into the exhaust gas recovery unit 105, and when the temperature reaches a set value, the fifth solenoid valve 1059 is closed to stop the exhaust gas recovery unit 105 from recovering the exhaust gas.
The embodiment of the utility model provides a when satellite platform or subaerial experiment, in order to avoid the cross contamination between the experiment, need wash experiment cavity 101 after the experiment is accomplished, and the waste gas that washes unifies recovery processing, the embodiment of the utility model provides a waste gas recovery unit 105's effect is just here.
The embodiment of the utility model provides a system can provide the experiment cavity of full kind vacuum/pressurization environment, and the poisonous of production in the compatible experimentation, have the gaseous recovery processing of contaminated exhaust gas, and independently accomplish the cleanness and the processing work to the experiment cavity, and the gaseous recovery of exhaust gas of experiment simultaneously also provides convenience and foundation to scientific experiment work such as the gas composition that produces in the later stage analysis experiment.
The embodiment of the utility model provides an in, this system mainly is applicable to following experiment when adopting waste gas recovery mode:
1) redundant or polluted gas experiments are generated in the experiment process;
2) the experiment cavity is polluted in the experiment process, and the experiment container needs to be cleaned after the experiment is finished;
3) the gas generated in the experimental process needs to be collected, and the experiment of scientific analysis and research needs to be carried out in the later period.
The embodiment of the utility model provides a system has greatly expanded satellite platform or subaerial usable experimental range, has reduced the reliance to external environment simultaneously. After the pressure experiment is completed in the satellite platform or the conventional experiment on the ground, the gas recovery and reuse unit is adopted to directly recover the recovered gas into the gas storage and supply unit, and the recovery and reuse of the recovered gas are completed. For special experiments, after vacuum or pressurization experiments are completed, a waste gas recovery unit is needed to be adopted to recover different experimental waste gas.
In this system, the gas storage and supply unit 103 is composed of a gas charging check valve 1036, a gas cylinder 1031, a first shut-off valve 1032, a pressure reducing valve 1033, a second shut-off valve 1034, and a first solenoid valve 1035 connected in series, wherein,
when the experiment cavity 101 is pressurized, the inflation one-way valve 1036 is closed, the first stop valve 1032, the pressure reducing valve 1033, the second stop valve 1034 and the first electromagnetic valve 1035 are opened in sequence, so that the gas in the gas storage bottle 1031 is input into the experiment cavity 101 through the gas inlet until the pressure of the experiment cavity 101 reaches a set value, and the first stop valve 1032, the pressure reducing valve 1033, the second stop valve 1034 and the first electromagnetic valve 1035 are closed in sequence;
when the gas in the experimental chamber 101 is exhausted, the inflation check valve 1036 is opened, the first stop valve 1032, the pressure reducing valve 1033, the second stop valve 1034 and the first electromagnetic valve 1035 are sequentially closed, and the gas recovered from the experimental chamber 101 by the gas recovery and multiplexing unit 104 is input to the gas bomb 1031 through the inflation check valve 1036.
The gas in the gas bomb 1031 may be various types of gas for pressure testing of the experimental chamber 101, such as argon.
A first pressure sensor 1037 is disposed between the gas cylinder 1031 and the first shut-off valve 1032, and detects the pressure of the gas cylinder 1031, and when the pressure is high, the pressure reducing valve 1033 is opened; a second pressure sensor 1038 is interposed between the first cutoff valve 1032 and the second cutoff valve 1033 for detecting the pressure of the gas transmitted in the gas passage in the gas storage and supply unit 103, and a temperature sensor for detecting the temperature of the gas in the gas passage in the gas storage and supply unit 103 may be further interposed at the position of the second pressure sensor 1038.
A safety valve 1039 is disposed between the first solenoid valve 1035 and the gas inlet port for closing when the gas transferred in the gas passage in the gas storage and supply unit 103 is unsafe. A solenoid valve is further provided at the safety valve 1039 for controlling opening and closing of the safety valve 1039.
In the system, the gas recycling and multiplexing unit 104 is composed of a booster pump 1041, a surge tank 1042, and a second electronic valve 1043 connected in series, wherein,
when the gas in the experiment chamber 101 is exhausted, the second electronic valve 1043 is opened, the booster pump 1041 is started, and the gas recovered by the experiment chamber 101 passes through the gas outlet, sequentially passes through the surge tank 1042 and the booster pump 1041, and is then transmitted to the gas storage and supply unit 103;
when the experiment chamber 101 is pressurized or the exhaust gas is recovered by the exhaust gas recovery unit 105, the second electronic valve 1043 is closed.
In the gas recycling and multiplexing unit 104, a third pressure sensor 1044 is further included, which is located between the booster pump 1041 and the surge tank 1042 and monitors the pressure between the booster pump 1041 and the surge tank 1042.
A pressure sensor and a temperature sensor are further included between the booster pump 1041 and the inflation check valve 1036 in the gas recovery and multiplexing unit 104, and are used for detecting the pressure and the temperature of the booster pump 1041.
In this system, the vacuum unit 102 includes:
the mechanical pump 1021, the third electronic valve 1022, the filter 1023 and the molecular pump 1024 are connected in series and then connected to the gas outlet;
when a first-level vacuum is formed in the experiment cavity 101, the third electronic valve 1022 is opened, the mechanical pump 1021 is started, air molecules in the experiment cavity 101 are pumped into the mechanical pump 1021 under the action of the mechanical pump 1021, the air molecules pass through the gas outlet and the molecular pump 1024 and are filtered by the filter 1023, and the air molecules in the experiment cavity 101 are continuously pumped into the mechanical pump 1021 through the third electronic valve 1022 until the experiment cavity 101 reaches the starting pressure of the molecular pump 1024 and then the molecular pump 1024 is started, so that the high-vacuum environment is realized for the experiment cavity 101.
In this vacuum unit 102, the primary vacuum environment is actually a low vacuum environment.
The vacuum unit 102 further includes a fourth electronic valve 1025, one end of the fourth electronic valve 1025 is connected between the third electronic valve 1022 and the filter 1023, the other end is connected to a mechanical pump check valve 1026 disposed on the mechanical pump 1021, and the fourth electronic valve 1025 is closed during the process of evacuating the experimental chamber 101.
When the experimental chamber 101 is pressurized, the fourth electronic valve 1025, the third electronic valve 1022, the mechanical pump 1021, and the molecular pump 1024 are closed.
When the pressurized gas is discharged from the experiment chamber 101, the fourth electronic valve 1025 is opened until the pressure in the experiment chamber reaches the pressure set by the booster pump 1041, the third electronic valve 1022 is opened, the mechanical pump 1021 is started, the fourth electronic valve 1025 is closed until the pressure in the experiment chamber reaches the starting pressure of the molecular pump 1024, and the molecular pump 1024 is started to continuously discharge the gas to the gas recovery and multiplexing unit 104 or the exhaust gas recovery unit 105.
In this system, the molecular pump 1024 actually controls the directional flow of the air molecules in the experiment chamber 101, so that the air molecules are continuously discharged out of the experiment chamber 101.
In the system, the experiment cavity 101 is further connected to a vacuum gauge unit 1011, and the vacuum environment of the experiment cavity 101 is monitored to obtain a vacuum value, and the vacuum value is displayed.
In the system, the pressure gauge unit 1012 is also connected to the experimental chamber 101, and the pressure value obtained by monitoring the pressure of the experimental chamber 101 is displayed.
In this system, the filter 1023 is used to filter impurities in the air molecules drawn from the test chamber 101, avoiding damage to the mechanical pump 1021.
Fig. 2 is a flowchart of a method for implementing a pressurization experiment provided by the embodiment of the present invention, and the method includes the following specific steps:
and step 204, the waste gas recovery unit is provided with a recovery gas cylinder, the waste gas recovery unit is connected to the other end of the vacuum unit, and waste gas input by the vacuum unit is received and stored in the recovery gas cylinder.
In the method, the method further comprises: arranging a gas recovery and multiplexing unit, wherein one end of the gas recovery and multiplexing unit is connected into the vacuum unit, and the other end of the gas recovery and multiplexing unit is connected into the gas storage and supply unit;
the recovered gas in the experimental cavity is recovered through the vacuum unit and is input into the gas storage and supply unit for storage through the gas recovery and multiplexing unit.
In the method, the method further comprises:
the exhaust gas recovery unit monitors whether the gas concentration of the input exhaust gas reaches a set value, and if so, stops inputting the exhaust gas.
The set value is a concentration value of a gas storage bottle in the gas storage and supply unit, or an initial target vacuum value when the set value is 0 and the vacuum value in the experimental cavity is measured to reach the set value.
In the method, the vacuum unit is further provided with a filter for filtering air molecules exhausted through an air passage between the experiment chamber and the mechanical pump.
In the method, real-time pressure monitoring and vacuum monitoring are also performed on the experimental chamber.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An exhaust gas recovery system, comprising: an experimental chamber (101), a vacuum unit (102), a gas storage and supply unit (103), and an exhaust gas recovery unit (105), wherein,
the gas storage and supply unit (103) is connected into the experimental cavity (101) through a gas inlet, and gas is input into the experimental cavity through the gas inlet until the pressure of the experimental cavity reaches a set value;
one end of the vacuum unit (102) is connected into a gas outlet of the experiment cavity (101), the other end of the vacuum unit is connected into the waste gas recovery unit (105), the experiment cavity (101) is vacuumized before pressurization, and after the pressurization experiment is completed, the waste gas is recovered into the waste gas recovery unit (105);
the waste gas recovery unit (105) is provided with a recovery gas cylinder (1051), the waste gas recovery unit (105) is connected to the other end of the vacuum unit (102), and waste gas input by the vacuum unit (102) is received and stored in the recovery gas cylinder (1051).
2. The system of claim 1, further comprising: the gas recovery and reuse unit (104) and the waste gas recovery unit (105) also comprise a four-way switch (1052), wherein,
the four-way switch (1052) is respectively connected with the other end of the vacuum unit (102) and the other end of the gas recovery and multiplexing unit (104);
one end of the gas recovery and multiplexing unit (104) is connected to the gas storage and supply unit (103), and the recovered gas in the experimental cavity (101) is recovered by the vacuum unit (102) through the opening and closing of the four-way switch (1052), and is input into the gas storage and supply unit (103) for storage through the gas recovery and multiplexing unit (104).
3. The system of claim 2, wherein the exhaust gas recovery unit (105) comprises: the four-way switch (1052) is connected in series with a second booster pump (1053), a fourth electromagnetic valve (1054) and a recovery gas cylinder (1051), when the second booster pump (1053) receives the waste gas input by the vacuum unit (102) and stores the waste gas into the recovery gas cylinder (1051), the second booster pump (1053) is opened to boost the waste gas, and the fourth electromagnetic valve (1054) is opened to lead the boosted waste gas into the recovery gas cylinder (1051).
4. The system as claimed in claim 3, characterized in that a third stop valve (1055) is further provided between the recovery gas cylinder (1051) and the fourth solenoid valve (1054) to stop the flow of the exhaust gas from the recovery gas cylinder (1051).
5. The system as claimed in claim 3, wherein the four-way switch (1052) in the exhaust gas recovery unit (105) further has a concentration sensor (1056) for detecting the concentration of the exhaust gas, and when the concentration of the exhaust gas reaches a set value, the second booster pump (1053) and the fourth solenoid valve (1054) are closed to stop the flow of the exhaust gas into the recovery cylinder (1051).
6. The system of claim 3, wherein the exhaust gas recovery unit (105) further comprises a recovery cylinder pressure sensor (1057) disposed between the third stop valve (1055) and the recovery cylinder (1051), monitoring the pressure of the recovery cylinder (1051).
7. The system as claimed in claim 3, wherein the one-way switch of the four-way switch (1052) in the exhaust gas recovery unit (105) for opening and closing the other end of the vacuum unit (102) is further provided with a temperature sensor (1058) of the vacuum unit (102) and a fifth solenoid valve (1059), the temperature sensor (1058) of the vacuum unit (102) monitors the temperature of the exhaust gas flowing into the exhaust gas recovery unit (105), and when the temperature reaches a set value, the fifth solenoid valve (1059) is closed to stop the exhaust gas recovery unit (105) from recovering the exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460324.8U CN210728924U (en) | 2019-09-04 | 2019-09-04 | Waste gas recovery experimental system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460324.8U CN210728924U (en) | 2019-09-04 | 2019-09-04 | Waste gas recovery experimental system |
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| CN210728924U true CN210728924U (en) | 2020-06-12 |
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