CN221222374U - Automatic nitrogen emptying device - Google Patents
Automatic nitrogen emptying device Download PDFInfo
- Publication number
- CN221222374U CN221222374U CN202323114934.1U CN202323114934U CN221222374U CN 221222374 U CN221222374 U CN 221222374U CN 202323114934 U CN202323114934 U CN 202323114934U CN 221222374 U CN221222374 U CN 221222374U
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- Prior art keywords
- nitrogen
- outlet
- automatic
- emptying
- pipeline
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 213
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 102
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 9
- 238000013022 venting Methods 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000001179 sorption measurement Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000010865 sewage Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 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
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model belongs to the technical field of nitrogen production equipment, and aims to provide an automatic nitrogen emptying device which comprises a nitrogen storage tank, wherein the side surface of the top of the nitrogen storage tank is connected with an air outlet pipeline through a flange, a pressure regulating valve is arranged on the air outlet pipeline, and a flowmeter is arranged at the rear end of the pressure regulating valve; the rear end of the flowmeter is connected with a vent pipeline through a vertical flange, and the tail end of the vent pipeline is provided with a nitrogen outlet and a vent outlet which are vertically intersected; and the front ends of the nitrogen outlet and the vent outlet are respectively provided with a flow regulating valve and a pneumatic valve. The utility model has the characteristics of simple structure, low purity or overlarge flow, good automatic emptying stability, convenient pipeline disassembly and the like, and can be widely applied to the technical field of pressure swing adsorption nitrogen production equipment production.
Description
Technical Field
The utility model belongs to the technical field of nitrogen production equipment, and particularly relates to an automatic nitrogen emptying device.
Background
The PSA pressure swing adsorption nitrogen making equipment uses clean compressed air as raw material, adopts two adsorption towers filled with molecular sieve to alternatively work, and utilizes the principle of pressure adsorption and pressure reduction desorption to produce high-purity nitrogen. The existing pressure swing adsorption system mainly adopts two towers to adsorb and alternately switch over the work, one tower adsorbs one tower to regenerate, the rear end of nitrogen making equipment is provided with a finished product nitrogen gas outlet, the gas outlet is connected with a gas pipeline of a nitrogen terminal, and the front end of the gas outlet is often provided with a nitrogen emptying device for discharging unqualified nitrogen.
At present, most of nitrogen emptying devices on existing nitrogen production equipment have an automatic discharge function of unqualified nitrogen. The utility model provides an automatic emptying device of nitrogen making machine is introduced to patent application number "201920781299.7", includes the storage tank, storage tank one side is equipped with the blast pipe, the blast pipe output is equipped with blow-down pipe and nitrogen gas exhaust pipe, through setting up urgent decompression mechanism, when pressure reached the threshold value, head and branch pipe separation, branch pipe and air chamber intercommunication play urgent decompression effect, start buzzer through lifter pressing shift knob, in time remind the staff to overhaul equipment, wholly make the utility model have higher security. In another example, patent application No. 200320131893.0 describes an automatic emptying device of nitrogen equipment, including nitrogen equipment and gas holder etc., through setting up nitrogen sampling port and nitrogen purity analyzer, can set up automatic emptying control point according to the operation requirement, need not manual operation. However, the above-mentioned nitrogen gas emptying device only realizes automatic emptying when the purity is unqualified, and in the in-service use, the nitrogen gas flow is too big in the pipeline, also can appear terminal nitrogen gas and use the problem, consequently also need to realize automatic emptying function to the too big condition of flow. For this reason, the structure of the existing nitrogen automatic emptying device needs to be further improved.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art, provides an automatic nitrogen emptying device, has the characteristics of simple structure, low purity or overlarge flow, good automatic emptying stability, convenient pipeline disassembly and the like, and can be widely applied to the technical field of pressure swing adsorption nitrogen equipment production.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the nitrogen automatic emptying device comprises a nitrogen storage tank, wherein the side surface of the top of the nitrogen storage tank is connected with an air outlet pipeline through a flange, a pressure regulating valve is arranged on the air outlet pipeline, and a flowmeter is arranged at the rear end of the pressure regulating valve; the rear end of the flowmeter is connected with a vent pipeline through a vertical flange, and the tail end of the vent pipeline is provided with a nitrogen outlet and a vent outlet which are vertically intersected; and the front ends of the nitrogen outlet and the vent outlet are respectively provided with a flow regulating valve and a pneumatic valve.
As an improvement, the nitrogen storage tank is a double-layer stainless steel tank body, and rated gas storage pressure is less than or equal to 1.0MPa.
As an improvement, a drain outlet is arranged at the bottom of the nitrogen storage tank.
As an improvement, the flowmeter is connected with a PLC control system, monitors the nitrogen flow through the PLC control system and is connected to a pneumatic valve at the front end of the emptying outlet.
As an improvement, the flow regulating valve is a manual ball valve, and the pneumatic valve is an automatic ball valve and is connected to a PLC control system.
As an improvement, the emptying pipeline is of a detachable integral structure and can be detached and installed through the vertical flange.
As an improvement, the emptying pipeline is made of stainless steel pipes or galvanized seamless steel pipes, and the pipe diameter is DN 25-DN 40mm.
As an improvement, the nitrogen outlet and the emptying outlet are of internal thread connection structures, so that the nitrogen outlet and the emptying outlet are conveniently in sealing connection with external threads of an outlet pipeline.
As an improvement, the rear end of the nitrogen outlet is provided with a nitrogen purity detector, and when the nitrogen purity is detected to be unqualified, the pneumatic valve of the nitrogen outlet is closed by the PLC control system, and the pneumatic valve of the emptying outlet is opened.
The beneficial effects obtained by the utility model are as follows: the nitrogen automatic emptying device has the characteristics of simple structure, low purity or overlarge flow, good automatic emptying stability, convenient pipeline disassembly and the like; the flow rate monitoring is realized by arranging a flow meter on the air outlet pipe and connecting the flow meter with a PLC control system, when the nitrogen flow rate exceeds a set value, the air outlet is used for air discharging treatment, and the use flow rate of the nitrogen at the rear end is ensured to be within a specified range; the vertical flange structure is adopted to connect the emptying pipeline, so that the installation and maintenance of the emptying pipeline are convenient, and meanwhile, the production and the manufacture of the emptying device are more convenient, and the cost is lower; the nitrogen outlet and the emptying outlet are arranged to be of an internal thread connection structure, so that the nitrogen outlet and the emptying outlet are conveniently in sealing connection with external threads of an outlet pipeline, and the tightness is better; in addition, the vent pipeline is made of stainless steel pipes or galvanized seamless steel pipes, so that rust inside the pipeline is prevented from polluting nitrogen, and the service life of the vent pipeline is prolonged.
Drawings
FIG. 1 is a schematic diagram of the nitrogen automatic venting device of the present utility model.
In the figure: 1. the nitrogen storage tank, 2, an air outlet pipeline, 3, a pressure regulating valve, 4, a flowmeter, 5, a vertical flange, 6, a nitrogen outlet, 7, an emptying outlet, 8, a flow regulating valve, 9, a pneumatic valve, 10 and a sewage outlet.
Detailed Description
Preferred embodiments of the present utility model will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the automatic nitrogen emptying device of the embodiment comprises a nitrogen storage tank 1, wherein the side surface of the top of the nitrogen storage tank 1 is connected with an air outlet pipeline 2 through a flange, a pressure regulating valve 3 is arranged on the air outlet pipeline 2, and a flowmeter 4 is arranged at the rear end of the pressure regulating valve 3; the rear end of the flowmeter 4 is connected with a vent pipeline through a vertical flange 5, and the tail end of the vent pipeline is provided with a nitrogen outlet 6 and a vent outlet 7 which are vertically intersected; the front ends of the nitrogen outlet 6 and the vent outlet 7 are respectively provided with a flow regulating valve 8 and a pneumatic valve 9.
Further, the nitrogen storage tank 1 is a double-layer stainless steel tank body, and rated gas storage pressure is less than or equal to 1.0MPa, preferably 0.85MPa; specifically, the inside of the nitrogen storage tank 1 is inlaid with an alumina ceramic wafer, so that the inside of the nitrogen storage tank 1 is better in wear resistance, smoother in surface and less prone to binding impurities; specifically, the bottom of the nitrogen storage tank is provided with a sewage outlet 10, and the sewage outlet 10 is connected with an automatic sewage discharging device, so that the inside of the nitrogen storage tank 1 can be automatically discharged at regular intervals.
Further, the flowmeter 4 is connected with a PLC control system, the nitrogen flow is monitored by the PLC control system, and the PLC control system is also connected to a pneumatic valve 9 at the front end of the emptying outlet; specifically, when the flow rate displayed by the flow meter 4 is greater than the set flow rate value, the PLC control system controls the pneumatic valve 9 in front of the nitrogen outlet 6 to be closed, stops supplying nitrogen, and simultaneously controls the pneumatic valve 9 in front of the vent outlet 7 to be opened, so as to perform emergency venting of nitrogen, and when the flow rate is reduced, the vent outlet is closed, and the nitrogen is supplied again.
Further, the flow regulating valve 8 is a manual ball valve, and the pneumatic valve 9 is an automatic ball valve and is connected to a PLC control system; specifically, the manual flow rate adjustment is performed by the flow rate adjustment valve 8.
Further, the emptying pipeline is of a detachable integral structure and can be detached and installed through the vertical flange 5; specifically, the vertical flange 5 is a circular flange, and a sealing ring is arranged in the flange, and the sealing ring is preferably made of a graphite gasket, so that the sealing performance is better; specifically, the emptying pipeline is made of stainless steel pipes or galvanized seamless steel pipes, and the pipe diameter is DN 25-DN 40mm, so that the inside of the pipeline is prevented from rusting and polluting nitrogen, and the service life of the emptying pipeline is prolonged.
Furthermore, the nitrogen outlet 6 and the vent outlet 7 are both of internal thread connection structures, so that the nitrogen outlet and the vent outlet are conveniently in sealing connection with external threads of an outlet pipeline; specifically, the nitrogen purity detector is arranged at the rear end of the nitrogen outlet 6, and when the nitrogen purity is unqualified, the nitrogen outlet pneumatic valve of the PLC control system is closed, and the air discharge pneumatic valve is opened.
The nitrogen automatic emptying device has the characteristics of simple structure, low purity or overlarge flow, good automatic emptying stability, convenient pipeline disassembly and the like, mainly realizes the automatic emptying function of low purity or overlarge flow, and has the specific working principle that: the nitrogen storage tank 1 stores high-purity nitrogen with the pressure of about 0.8MPa, nitrogen is led out through an air outlet pipeline 2 at the top, the nitrogen is regulated to about 0.6MPa through a pressure regulating valve 3, the pressure can be regulated according to the requirement, the depressurized nitrogen is subjected to flow monitoring through a flowmeter 4, the flow monitoring value is fed back to a PLC control system, and the PLC control system determines whether the nitrogen is subjected to air utilization terminal or air release treatment according to the actual flow; in addition, the nitrogen purity detector arranged at the rear end of the nitrogen outlet 6 can further detect the purity of the nitrogen, and the PLC control system can perform nitrogen use or nitrogen emptying treatment.
Finally, it should be noted that the above list is only specific embodiments of the present utility model. Obviously, the utility model is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present utility model.
Claims (10)
1. The nitrogen automatic emptying device comprises a nitrogen storage tank (1) and is characterized in that the side surface of the top of the nitrogen storage tank (1) is connected with an air outlet pipeline (2) through a flange, a pressure regulating valve (3) is arranged on the air outlet pipeline (2), and a flowmeter (4) is arranged at the rear end of the pressure regulating valve (3); the rear end of the flowmeter (4) is connected with an emptying pipeline through a vertical flange (5), and the tail end of the emptying pipeline is provided with a nitrogen outlet (6) and an emptying outlet (7) which are vertically intersected; the front ends of the nitrogen outlet (6) and the emptying outlet (7) are respectively provided with a flow regulating valve (8) and a pneumatic valve (9).
2. The automatic nitrogen emptying device according to claim 1, wherein the nitrogen storage tank (1) is a double-layer stainless steel tank body, and rated storage pressure is less than or equal to 1.0MPa.
3. The nitrogen automatic emptying device according to claim 2, characterized in that a drain outlet (10) is arranged at the bottom of the nitrogen storage tank (1).
4. The automatic nitrogen purging device according to claim 1, wherein the flow meter (4) is connected to a PLC control system, and the flow rate of nitrogen is monitored by the PLC control system and is connected to a pneumatic valve at the front end of the purge outlet.
5. The automatic nitrogen venting device according to claim 1, characterized in that the flow regulating valve (8) is a manual ball valve and the pneumatic valve (9) is an automatic ball valve and is connected to a PLC control system.
6. The automatic nitrogen gas venting device according to claim 1, wherein the venting line is of a detachable integral structure, and is detachably mounted through the vertical flange (5).
7. The automatic nitrogen gas emptying device according to claim 6, wherein the emptying pipeline is made of stainless steel pipes or galvanized seamless steel pipes, and the pipe diameter is DN 25-DN 40mm.
8. The automatic nitrogen gas venting device according to claim 1, wherein the nitrogen gas outlet (6) and the venting outlet (7) are both of an internal threaded connection structure.
9. The automatic nitrogen emptying device according to claim 1, characterized in that the rear end of the nitrogen outlet (6) is provided with a nitrogen purity detector.
10. The nitrogen automatic venting apparatus of claim 9, wherein the nitrogen purity detector is connected to a PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323114934.1U CN221222374U (en) | 2023-11-19 | 2023-11-19 | Automatic nitrogen emptying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323114934.1U CN221222374U (en) | 2023-11-19 | 2023-11-19 | Automatic nitrogen emptying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221222374U true CN221222374U (en) | 2024-06-25 |
Family
ID=91577507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323114934.1U Active CN221222374U (en) | 2023-11-19 | 2023-11-19 | Automatic nitrogen emptying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221222374U (en) |
-
2023
- 2023-11-19 CN CN202323114934.1U patent/CN221222374U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |