CN220918666U - Intelligent membrane group dynamic regulation and control device - Google Patents
Intelligent membrane group dynamic regulation and control device Download PDFInfo
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- CN220918666U CN220918666U CN202322598801.XU CN202322598801U CN220918666U CN 220918666 U CN220918666 U CN 220918666U CN 202322598801 U CN202322598801 U CN 202322598801U CN 220918666 U CN220918666 U CN 220918666U
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- 239000012528 membrane Substances 0.000 title claims abstract description 117
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 374
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 187
- 238000000926 separation method Methods 0.000 claims abstract description 105
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 claims abstract description 104
- 238000002347 injection Methods 0.000 claims abstract description 102
- 239000007924 injection Substances 0.000 claims abstract description 102
- 239000007789 gas Substances 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims description 15
- 238000005070 sampling Methods 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000012549 training Methods 0.000 description 9
- 238000004088 simulation Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 206010021143 Hypoxia Diseases 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007954 hypoxia Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses an intelligent membrane group dynamic regulation and control device. The device comprises: the input end of the nitrogen injection pipeline is connected with the air compressor, and the output end of the nitrogen injection pipeline is connected with the air utilization device; the oxygen-nitrogen separation membrane group unit is arranged on the nitrogen injection pipeline; the device comprises a plurality of oxygen-nitrogen separation membrane subunits which are connected in parallel; the input end of the nitrogen concentration detection unit is connected with the output end of the oxygen-nitrogen separation membrane group unit; the input end of the emptying unit is connected with the first output end of the nitrogen concentration detection unit; the input end of the nitrogen injection unit is connected with the second output end of the nitrogen concentration detection unit; and the control unit is electrically connected with the oxygen-nitrogen separation membrane subunits and the emptying unit and the nitrogen injection unit respectively and is used for controlling the emptying or the injection of nitrogen into the gas utilization device. According to the utility model, the control unit controls the plurality of oxygen-nitrogen separation membrane subunits to independently work, so that the oxygen-nitrogen separation membrane subunits are reasonably used, the phenomenon of 'idle running' is avoided, and the service life of the oxygen-nitrogen separation membrane is effectively prolonged.
Description
Technical Field
The utility model relates to the field of oxygen-nitrogen separation membrane groups of normal-pressure low-oxygen simulation model training rooms, in particular to an intelligent membrane group dynamic regulation and control device.
Background
In a medium-and-small-sized normal-pressure hypoxia simulation system, when the simulation altitude in a training room is required to be achieved quickly, high-purity nitrogen with high air volume (the purity of the nitrogen is more than or equal to 95%) enters the training room, so that the quick establishment of the simulation altitude is realized; after the simulated altitude is reached, the system enters a fine tuning stage of the gas flow. For example, for a small-sized low-oxygen training system, when the rapid large-volume nitrogen injection is needed, the nitrogen volume is 240m 3/h, three oxygen-nitrogen separation membranes are needed for combined air supply, when the air volume fine adjustment stage is entered, the nitrogen demand is about 60m 3/h, in the existing actual operation, the three oxygen-nitrogen separation membranes are still fully put into operation, but the demand and the supply of nitrogen are seriously mismatched, the two oxygen-nitrogen separation membranes are in an 'idle running' state, the 'idle running' phenomenon seriously affects the service life of the oxygen-nitrogen separation membranes, the manufacturing cost of the oxygen-nitrogen separation membranes is high, and the cost is wasted.
Aiming at the problem that the service life is influenced by the 'air running' phenomenon of an oxygen-nitrogen separation membrane in the prior art, no effective solution is proposed at present.
Disclosure of utility model
The embodiment of the utility model provides an intelligent membrane group dynamic regulation and control device, which aims to solve the problem that the service life is influenced by the 'air running' phenomenon of an oxygen-nitrogen separation membrane in the prior art.
In order to achieve the above purpose, the present utility model provides an intelligent membrane module dynamic regulation device, which comprises: the nitrogen injection pipeline is connected with the air compressor at the input end and the gas utilization device at the output end, and is used for receiving compressed air and outputting high-purity nitrogen; the oxygen-nitrogen separation membrane group unit is arranged on the nitrogen injection pipeline and is used for separating oxygen from nitrogen in the compressed air to prepare high-purity nitrogen; the oxygen-nitrogen separation membrane group unit comprises: a plurality of oxygen-nitrogen separation membrane subunits connected in parallel; the input end of the nitrogen concentration detection unit is connected with the output end of the oxygen-nitrogen separation membrane group unit; the input end of the emptying unit is connected with the first output end of the nitrogen concentration detection unit and is used for discharging nitrogen with concentration lower than a first preset threshold value; the input end of the nitrogen injection unit is connected with the second output end of the nitrogen concentration detection unit, and is used for injecting nitrogen with the concentration higher than or equal to a first preset threshold value into the gas utilization device; the control unit is electrically connected with the oxygen-nitrogen separation membrane subunits in parallel and used for controlling the oxygen-nitrogen separation membrane subunits to independently work; the control unit is respectively and electrically connected with the emptying unit and the nitrogen injection unit and is used for controlling the emptying of nitrogen or the injection of the nitrogen into the gas utilization device.
Optionally, the method further comprises: a pressure transmitter; the pressure transmitter is arranged on the nitrogen injection pipeline and is positioned between the input end of the nitrogen injection pipeline and the input end of the oxygen-nitrogen separation membrane group unit.
Optionally, the method further comprises: a temperature transmitter; the temperature transmitter is arranged on the nitrogen injection pipeline and is positioned between the pressure transmitter and the input end of the oxygen-nitrogen separation membrane group unit.
Optionally, the oxygen-nitrogen separation membrane subunit includes: the air injection electric valve, the manual valve, the oxygen-nitrogen separation membrane and the check valve are sequentially connected; the temperature transmitter is connected with the air injection electric valve; the control unit is electrically connected with the empty injection electric valve and used for controlling the opening and closing of the empty injection electric valve.
Optionally, the control unit is electrically connected with the pressure transmitter and is used for receiving the gas pressure value detected by the pressure transmitter and controlling the opening and closing of the air injection electric valve according to the gas pressure value; the control unit is electrically connected with the temperature transmitter and is used for receiving the gas temperature detected by the temperature transmitter and controlling the opening and closing of the air injection electric valve according to the gas temperature.
Optionally, the nitrogen concentration detection unit includes: the sampling port, the speed regulation joint, the PE pipe and the nitrogen analyzer are connected in sequence; the input end of the sampling port is connected with the output end of the oxygen-nitrogen separation membrane group unit.
Optionally, the evacuation unit includes: an evacuation electric valve and an evacuation line; the first output end of the nitrogen analyzer, the emptying electric valve and the emptying pipeline are connected in sequence; the control unit is electrically connected with the emptying electric valve and used for controlling the opening and closing of the emptying electric valve.
Optionally, the nitrogen injection unit includes: a nitrogen injection electric valve and a nitrogen storage tank; the second output end of the nitrogen analyzer is sequentially connected with the nitrogen injection electric valve and the nitrogen storage tank; the control unit is electrically connected with the nitrogen injection electric valve and used for controlling the opening and closing of the nitrogen injection electric valve.
Optionally, the nitrogen injection unit further includes: a flow meter; the flowmeter is arranged between the nitrogen injection electric valve and the nitrogen storage tank.
The utility model has the beneficial effects that:
The utility model provides an intelligent membrane group dynamic regulation and control device, which comprises: the nitrogen injection pipeline is connected with the air compressor at the input end and the gas utilization device at the output end, and is used for receiving compressed air and outputting high-purity nitrogen; the oxygen-nitrogen separation membrane group unit is arranged on the nitrogen injection pipeline and is used for separating oxygen from nitrogen in the compressed air to prepare high-purity nitrogen; the oxygen-nitrogen separation membrane group unit comprises: a plurality of oxygen-nitrogen separation membrane subunits connected in parallel; the input end of the nitrogen concentration detection unit is connected with the output end of the oxygen-nitrogen separation membrane group unit; the input end of the emptying unit is connected with the first output end of the nitrogen concentration detection unit and is used for discharging nitrogen with concentration lower than a first preset threshold value; the input end of the nitrogen injection unit is connected with the second output end of the nitrogen concentration detection unit, and is used for injecting nitrogen with the concentration higher than or equal to a first preset threshold value into the gas utilization device; the control unit is electrically connected with the oxygen-nitrogen separation membrane subunits in parallel and used for controlling the oxygen-nitrogen separation membrane subunits to independently work; the control unit is respectively and electrically connected with the emptying unit and the nitrogen injection unit and is used for controlling the emptying of nitrogen or the injection of the nitrogen into the gas utilization device. According to the utility model, the control unit controls the plurality of oxygen-nitrogen separation membrane subunits to independently work, so that the oxygen-nitrogen separation membrane subunits are reasonably used, the phenomenon of 'idle running' is avoided, and the service life of the oxygen-nitrogen separation membrane can be effectively prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent membrane group dynamic regulation device according to an embodiment of the present utility model.
Symbol description:
The nitrogen injection device comprises a nitrogen injection pipeline-1, a pressure transmitter-2, a temperature transmitter-3, an air injection electric valve-4, a manual valve-5, an oxygen-nitrogen separation membrane-6, a check valve-7, a sampling port-8, an emptying electric valve-9, an emptying pipeline-10, a nitrogen injection electric valve-11, a flowmeter-12, a nitrogen storage tank-13, an air utilization device-14 and a control unit-15.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In a medium-and-small-sized normal-pressure hypoxia simulation system, when the simulation altitude in a training room is required to be achieved quickly, high-purity nitrogen with high air volume (the purity of the nitrogen is more than or equal to 95%) enters the training room, so that the quick establishment of the simulation altitude is realized; after the simulated altitude is reached, the system enters a fine tuning stage of the gas flow. For example, for a small-sized hypoxia training system, when the rapid large-capacity nitrogen injection is required, the nitrogen capacity is 240m 3/h, three oxygen-nitrogen separation membranes 6 are required for combined air supply, when the gas capacity fine adjustment stage is entered, the nitrogen demand is about 60m 3/h, in the existing actual operation, the three oxygen-nitrogen separation membranes 6 are still fully put into operation, but the demand and the supply of nitrogen are seriously mismatched, the two oxygen-nitrogen separation membranes 6 are in an 'air-run' state, the service life of the oxygen-nitrogen separation membranes 6 is seriously influenced by the 'air-run' phenomenon, the manufacturing cost of the oxygen-nitrogen separation membranes 6 is high, and the cost is wasted.
Therefore, the utility model provides an intelligent membrane group dynamic regulation device, which realizes the automatic alternate use of each oxygen-nitrogen separation membrane 6 subunit in the oxygen-nitrogen separation membrane 6 group unit, avoids the phenomenon of 'idle running', and further improves the service life of the oxygen-nitrogen separation membrane 6 as a whole. Fig. 1 is a schematic structural diagram of an intelligent membrane group dynamic regulation device according to an embodiment of the present utility model, where, as shown in fig. 1, the device includes:
1. The nitrogen injection pipeline 1 is connected with the air compressor at the input end and the gas utilization device 14 at the output end, and is used for receiving compressed air output by the air compressor and outputting high-purity nitrogen into the gas utilization device 14;
2. The oxygen-nitrogen separation membrane 6-group unit is arranged on the nitrogen injection pipeline 1 and is used for separating oxygen and nitrogen from the compressed air to prepare high-purity nitrogen (specifically, high-purity nitrogen with the purity of more than or equal to 95 percent); the oxygen-nitrogen separation membrane 6-group unit comprises: a plurality of oxygen-nitrogen separation membrane 6 subunits connected in parallel;
specifically, in the utility model, the oxygen-nitrogen separation membrane 6 group unit comprises three oxygen-nitrogen separation membrane 6 subunits connected in parallel, namely three paths of nitrogen preparation are divided, each path is a nitrogen preparation branch, and the three nitrogen preparation branches are combined into one part of the nitrogen injection pipeline 1; each oxygen nitrogen separation membrane 6 subunit comprises: the air injection electric valve 4, the manual valve 5, the oxygen-nitrogen separation membrane 6 and the check valve 7 are connected in sequence; the empty injection electric valve 4, the manual valve 5, the oxygen-nitrogen separation membrane 6 and the check valve 7 in the oxygen-nitrogen separation membrane 6 subunit are positioned on one nitrogen making branch.
A pressure transmitter 2 and a temperature transmitter 3 are sequentially arranged between the input end of the nitrogen injection pipeline 1 and the input end of the oxygen-nitrogen separation membrane 6 group unit and on the nitrogen injection pipeline 1;
The pressure transmitter 2 mainly detects the gas pressure before entering the oxygen-nitrogen separation membrane 6. The pressure range of the oxygen-nitrogen separation membrane 6 is typically 10bar to 12bar. When the pressure is under-pressure or over-pressure, the air injection electric valve 4 can be controlled to realize closing of the pipeline, so that the oxygen-nitrogen separation membrane 6 is protected.
The temperature transmitter 3 mainly detects the temperature of the gas before entering the oxygen-nitrogen separation membrane 6, and the temperature adjustment range is 25-45 ℃. Too low a temperature may affect the yield of nitrogen production by the oxygen-nitrogen separation membrane 6, and too high a temperature may cause irreversible damage to the oxygen-nitrogen separation membrane 6. When the temperature is insufficient or too high, the air injection electric valve 4 can be controlled to realize the closing of a pipeline, so that the oxygen-nitrogen separation membrane 6 is protected.
The air injection electric valve 4 is one of the keys for realizing the protection of the oxygen-nitrogen separation membrane 6, is a key device for executing the control of the nitrogen production branch, and can be automatically opened and closed according to a control instruction.
The manual valve 5 is normally in an open state, and the manual valve 5 can be closed when the oxygen-nitrogen separation membrane 6 is required to be detached. In an extreme case, in a state where the empty injection motor valve 4 is not operated, the control of the nitrogen production branch is performed by the manual valve 5, and the oxygen-nitrogen separation membrane 6 is further protected.
The oxygen-nitrogen separation membrane 6 mainly produces high-purity nitrogen with the purity of more than or equal to 95 percent. The three oxygen-nitrogen separation membranes 6 are a separation membrane combination mode which is frequently used in medium and small training rooms. The number of oxygen-nitrogen separation membranes 6 may be increased or decreased in the later stage depending on the size of the training room.
The check valve 7 has the meaning of avoiding that the generated high-pressure nitrogen flows back to other nitrogen making branches through the nitrogen injection pipeline 1 and affects other oxygen-nitrogen separation membranes 6.
3. The input end of the nitrogen concentration detection unit is connected with the output end of the oxygen-nitrogen separation membrane 6-group unit;
The nitrogen concentration detection unit includes: the sampling port 8, the speed regulation joint, the PE pipe and the nitrogen analyzer are connected in sequence; the input end of the sampling port 8 is connected with the output end of the oxygen-nitrogen separation membrane 6 group unit.
Specifically, the produced high-purity nitrogen flows out through the sampling port 8, passes through the speed regulation joint, then flows through the PE pipe, and finally enters the nitrogen analyzer to measure the nitrogen concentration.
4. The input end of the emptying unit is connected with the first output end of the nitrogen concentration detection unit and is used for discharging nitrogen with concentration lower than a first preset threshold value;
The evacuation unit includes: an evacuation electric valve 9 and an evacuation line 10; the first output end of the nitrogen analyzer, the emptying electric valve 9 and the emptying pipeline 10 are sequentially connected;
Specifically, when the nitrogen concentration is lower than 95%, the evacuation motor valve 9 is controlled to be opened, and the evacuation of nitrogen is realized through the evacuation pipeline 10.
5. The nitrogen injection unit is connected with the second output end of the nitrogen concentration detection unit at the input end and is used for injecting nitrogen with the concentration higher than or equal to a first preset threshold value into the gas utilization device 14;
The nitrogen injection unit includes: a nitrogen injection electric valve 11 and a nitrogen storage tank 13; the second output end of the nitrogen analyzer, the nitrogen injection electric valve 11 and the nitrogen storage tank 13 are connected in sequence; the nitrogen injection unit further comprises: a flow meter 12; the flowmeter 12 is provided between the nitrogen injection electric valve 11 and the nitrogen storage tank 13.
Specifically, when the nitrogen concentration is higher than or equal to 95%, the nitrogen injection motor valve 11 is controlled to be opened, and the evacuation motor valve 9 is controlled to be closed.
The added flow meter 12 has the significance of monitoring the consumption of the rear-end nitrogen, and is in a large-air-flow nitrogen injection mode when the flow meter 12 displays that the air flow is large; when the flow meter 12 shows a small amount of gas, it is in the dispersion phase (fine tuning phase).
The nitrogen storage tank 13 is mainly used for balancing the air consumption of the rear end. Generally, the nitrogen storage tank 13 selects a storage tank with the volume of 2m 3～10m3 according to the rear end air volume, when the front end oxygen-nitrogen separation membrane 6 is switched, the purity of the nitrogen is reduced briefly and is emptied, and at the moment, the air in the nitrogen storage tank 13 can meet the rear end nitrogen consumption (namely the nitrogen consumption of the air utilization device 14) within 5 min. The nitrogen production rate of the oxygen-nitrogen separation membrane 6 is high, and the preparation of high-purity nitrogen can be completed within 4 minutes, so that the gas consumed in the nitrogen storage tank 13 is supplemented.
6. A control unit 15 electrically connected to the plurality of parallel oxygen-nitrogen separation membrane 6 subunits for controlling the plurality of oxygen-nitrogen separation membrane 6 subunits to operate independently; the control unit 15 is electrically connected to the evacuation unit and the nitrogen injection unit, respectively, and is used for controlling evacuation or injection of nitrogen into the gas utilization device 14.
The control unit 15 is electrically connected with the empty injection electric valve 4 in the plurality of oxygen-nitrogen separation membrane 6 subunits and is used for controlling the opening and closing of the empty injection electric valve 4.
Further, the control unit 15 is electrically connected to the pressure transmitter 2, and is configured to receive a gas pressure value detected by the pressure transmitter 2 and control opening and closing of the air injection electric valve 4 according to the gas pressure value; namely, when under-pressure or over-pressure is caused, the air injection electric valve 4 is controlled to be closed, so that the corresponding nitrogen making branch is closed.
The control unit 15 is electrically connected with the temperature transmitter 3, and is configured to receive the gas temperature detected by the temperature transmitter 3 and control the opening and closing of the air injection electric valve 4 according to the gas temperature. When the temperature is insufficient or too high, the air injection electric valve 4 is controlled to be closed, so that the corresponding nitrogen making branch is closed.
The control unit 15 is electrically connected with the emptying electric valve 9 in the emptying unit and is used for controlling the opening and closing of the emptying electric valve 9; the control unit 15 is electrically connected with the nitrogen injection electric valve 11 in the nitrogen injection unit, and is used for controlling the opening and closing of the nitrogen injection electric valve 11.
When the nitrogen concentration is lower than 95%, the control unit 15 controls the emptying electric valve 9 to be opened, the nitrogen injection electric valve 11 to be closed, and the nitrogen is discharged through the emptying pipeline 10; when the nitrogen concentration is higher than or equal to 95%, the control unit 15 controls the nitrogen injection electric valve 11 to be opened, the emptying electric valve 9 to be closed, and the nitrogen is injected into the gas utilization device 14.
In specific work, the control unit 15 records the opening time and closing time of each nitrogen making branch air injection electric valve 4, and realizes the automatic operation of each oxygen-nitrogen separation membrane 6. In the large-gas nitrogen injection stage, the air injection electric valves 4 of each nitrogen making branch can be opened simultaneously, and after entering the dispersion stage (fine adjustment stage), the air injection electric valves 4 are opened in turn, and the time for controlling in turn can be set on the operation panel of the control unit 15. Through analysis and comparison, under the operation time of 1000h, the service time of each oxygen-nitrogen separation membrane 6 in the original oxygen-nitrogen separation membrane 6 group unit is 1000h, the service time of each oxygen-nitrogen separation membrane 6 in the existing oxygen-nitrogen separation membrane 6 group unit is about 333h, the service time is reduced to 1/3 of the original service time, the protection of the oxygen-nitrogen separation membrane 6 is very beneficial, and the maintenance cost of a user is effectively reduced. The operation of this intelligent membrane group dynamic regulation and control device is automatic completion all, and operating personnel only need to carry out a key operation start-stop at the control unit 15 can, therefore, the device has higher intelligent level, can greatly make things convenient for the user to use.
In the utility model, when the small amount of nitrogen is used, the control unit 15 controls each air injection electric valve 4 to be opened in turn, and three oxygen-nitrogen separation membranes 6 are not required to work simultaneously, so that the phenomenon of 'air running' is avoided, the loss of each oxygen-nitrogen separation membrane 6 is greatly reduced, and the overall service life of each oxygen-nitrogen separation membrane 6 is effectively prolonged.
The utility model has the beneficial effects that:
The utility model provides an intelligent membrane group dynamic regulation and control device, which comprises: the nitrogen injection pipeline 1 is connected with an air compressor at the input end and a gas utilization device 14 at the output end, and is used for receiving compressed air and outputting high-purity nitrogen; the oxygen-nitrogen separation membrane 6 group unit is arranged on the nitrogen injection pipeline 1 and is used for separating oxygen and nitrogen from the compressed air to prepare high-purity nitrogen; the oxygen-nitrogen separation membrane 6-group unit comprises: a plurality of oxygen-nitrogen separation membrane 6 subunits connected in parallel; the input end of the nitrogen concentration detection unit is connected with the output end of the oxygen-nitrogen separation membrane 6-group unit; the input end of the emptying unit is connected with the first output end of the nitrogen concentration detection unit and is used for discharging nitrogen with concentration lower than a first preset threshold value; the nitrogen injection unit is connected with the second output end of the nitrogen concentration detection unit at the input end and is used for injecting nitrogen with the concentration higher than or equal to a first preset threshold value into the gas utilization device 14; a control unit 15 electrically connected to the plurality of parallel oxygen-nitrogen separation membrane 6 subunits for controlling the plurality of oxygen-nitrogen separation membrane 6 subunits to operate independently; the control unit 15 is electrically connected to the evacuation unit and the nitrogen injection unit, respectively, and is used for controlling evacuation or injection of nitrogen into the gas utilization device 14. In the utility model, the control unit 15 controls the oxygen-nitrogen separation membrane 6 subunits to independently work, so that the oxygen-nitrogen separation membrane 6 subunits are reasonably used, the phenomenon of 'idle running' is avoided, and the service life of the oxygen-nitrogen separation membrane 6 can be effectively prolonged.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. An intelligent membrane group dynamic regulation and control device, which is characterized by comprising:
The nitrogen injection pipeline is connected with the air compressor at the input end and the gas utilization device at the output end, and is used for receiving compressed air and outputting high-purity nitrogen;
The oxygen-nitrogen separation membrane group unit is arranged on the nitrogen injection pipeline and is used for separating oxygen from nitrogen in the compressed air to prepare high-purity nitrogen; the oxygen-nitrogen separation membrane group unit comprises: a plurality of oxygen-nitrogen separation membrane subunits connected in parallel;
The input end of the nitrogen concentration detection unit is connected with the output end of the oxygen-nitrogen separation membrane group unit;
The input end of the emptying unit is connected with the first output end of the nitrogen concentration detection unit and is used for discharging nitrogen with concentration lower than a first preset threshold value;
The input end of the nitrogen injection unit is connected with the second output end of the nitrogen concentration detection unit, and is used for injecting nitrogen with the concentration higher than or equal to a first preset threshold value into the gas utilization device;
the control unit is electrically connected with the oxygen-nitrogen separation membrane subunits in parallel and used for controlling the oxygen-nitrogen separation membrane subunits to independently work; the control unit is respectively and electrically connected with the emptying unit and the nitrogen injection unit and is used for controlling the emptying of nitrogen or the injection of the nitrogen into the gas utilization device.
2. The apparatus as recited in claim 1, further comprising: a pressure transmitter;
The pressure transmitter is arranged on the nitrogen injection pipeline and is positioned between the input end of the nitrogen injection pipeline and the input end of the oxygen-nitrogen separation membrane group unit.
3. The apparatus as recited in claim 2, further comprising: a temperature transmitter;
the temperature transmitter is arranged on the nitrogen injection pipeline and is positioned between the pressure transmitter and the input end of the oxygen-nitrogen separation membrane group unit.
4. A device according to claim 3, characterized in that:
The oxygen-nitrogen separation membrane subunit comprises: the air injection electric valve, the manual valve, the oxygen-nitrogen separation membrane and the check valve are sequentially connected; the temperature transmitter is connected with the air injection electric valve;
The control unit is electrically connected with the empty injection electric valve and used for controlling the opening and closing of the empty injection electric valve.
5. The apparatus according to claim 4, wherein:
The control unit is electrically connected with the pressure transmitter and is used for receiving the gas pressure value detected by the pressure transmitter and controlling the opening and closing of the air injection electric valve according to the gas pressure value;
The control unit is electrically connected with the temperature transmitter and is used for receiving the gas temperature detected by the temperature transmitter and controlling the opening and closing of the air injection electric valve according to the gas temperature.
6. The apparatus according to claim 1, wherein:
The nitrogen concentration detection unit includes: the sampling port, the speed regulation joint, the PE pipe and the nitrogen analyzer are connected in sequence;
The input end of the sampling port is connected with the output end of the oxygen-nitrogen separation membrane group unit.
7. The apparatus according to claim 6, wherein:
The evacuation unit includes: an evacuation electric valve and an evacuation line; the first output end of the nitrogen analyzer, the emptying electric valve and the emptying pipeline are connected in sequence;
The control unit is electrically connected with the emptying electric valve and used for controlling the opening and closing of the emptying electric valve.
8. The apparatus according to claim 6, wherein:
The nitrogen injection unit includes: a nitrogen injection electric valve and a nitrogen storage tank; the second output end of the nitrogen analyzer is sequentially connected with the nitrogen injection electric valve and the nitrogen storage tank;
The control unit is electrically connected with the nitrogen injection electric valve and used for controlling the opening and closing of the nitrogen injection electric valve.
9. The apparatus according to claim 8, wherein:
The nitrogen injection unit further comprises: a flow meter; the flowmeter is arranged between the nitrogen injection electric valve and the nitrogen storage tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322598801.XU CN220918666U (en) | 2023-09-25 | 2023-09-25 | Intelligent membrane group dynamic regulation and control device |
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| CN202322598801.XU CN220918666U (en) | 2023-09-25 | 2023-09-25 | Intelligent membrane group dynamic regulation and control device |
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| CN220918666U true CN220918666U (en) | 2024-05-10 |
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| CN202322598801.XU Active CN220918666U (en) | 2023-09-25 | 2023-09-25 | Intelligent membrane group dynamic regulation and control device |
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