CN213132564U - Quick start system for preparing qualified nitrogen through pressure swing adsorption - Google Patents
Quick start system for preparing qualified nitrogen through pressure swing adsorption Download PDFInfo
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- CN213132564U CN213132564U CN202021539240.6U CN202021539240U CN213132564U CN 213132564 U CN213132564 U CN 213132564U CN 202021539240 U CN202021539240 U CN 202021539240U CN 213132564 U CN213132564 U CN 213132564U
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Abstract
The utility model discloses a quick start system for preparing qualified nitrogen by pressure swing adsorption, which comprises a buffer tank, two groups of adsorption towers arranged in parallel, an air source storage tank and a PLC (programmable logic controller), wherein the two groups of adsorption towers are communicated with the buffer tank through an air supply pipeline; the buffer tank is communicated with a gas transmission pipeline, the gas transmission pipeline leads out a vent pipeline, and one end of the gas transmission pipeline close to the buffer tank is communicated with a nitrogen purity analyzer; the gas source storage tank is communicated with the buffer tank through a return pipeline, and a ball valve, a pressure reducing valve, a check valve, a safety valve, a pressure transmitter, a flow transmitter and an electromagnetic valve are sequentially arranged on the return pipeline from the gas source storage tank to the buffer tank; the PLC is electrically connected with the electromagnetic valve, the flow transmitter, the pressure transmitter and the nitrogen purity analyzer. The utility model provides an original nitrogen making equipment inefficiency, lengthy nitrogen making preparation time, the time that will prepare qualified nitrogen gas shortens to within 30min, has greatly improved nitrogen making efficiency, reduces the efficiency, the energy saving.
Description
Technical Field
The utility model relates to a nitrogen system technical field specifically is a quick start-up system of qualified nitrogen gas is prepared in pressure swing adsorption.
Background
The preparation time for preparing qualified nitrogen by mainstream pressure swing adsorption nitrogen preparation equipment in the market is usually long, if the purity of the nitrogen exceeds 99.99% or the equipment downtime exceeds 24 hours, the preparation time of the qualified nitrogen is further prolonged and needs more than 2-4 hours, and the urgent need of a user on the qualified nitrogen cannot be met by long waiting. Therefore, the quick start system for preparing the qualified nitrogen through the pressure swing adsorption can greatly shorten the preparation time for preparing the qualified nitrogen.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome current defect, a quick start-up system of qualified nitrogen gas is prepared to pressure swing adsorption is provided, original nitrogen making equipment inefficiency has been solved, lengthy nitrogen making preparation time, the time that will prepare qualified nitrogen gas shortens to within 30min, nitrogen making efficiency has greatly been improved, the efficiency is reduced, energy saving, the bottleneck difficult problem of long-term puzzlement pressure swing adsorption nitrogen making trade has been solved, there are wide use and development space now and in the future, can produce higher economic benefits, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a quick start system for preparing qualified nitrogen through pressure swing adsorption comprises a buffer tank, two groups of adsorption towers arranged in parallel, an air source storage tank and a PLC (programmable logic controller), wherein the two groups of adsorption towers are communicated with the buffer tank through an air supply pipeline; the buffer tank is communicated with a gas transmission pipeline, a vent pipeline is led out of the gas transmission pipeline, and one end of the gas transmission pipeline, which is close to the buffer tank, is communicated with a nitrogen purity analyzer; the gas source storage tank is communicated with the buffer tank through a return pipeline, and a ball valve, a pressure reducing valve, a check valve, a safety valve, a pressure transmitter, a flow transmitter and an electromagnetic valve are sequentially arranged on the return pipeline from the gas source storage tank to the buffer tank; the PLC is electrically connected with the electromagnetic valve, the flow transmitter, the pressure transmitter and the nitrogen purity analyzer.
Preferably, pneumatic valves are respectively arranged on one end of the air supply pipeline close to the buffer tank, one end of the air supply pipeline far away from the buffer tank and the emptying pipeline, and the pneumatic valves are interlocked with the nitrogen making machine of the nitrogen making system.
Preferably, the ratio of the volume of each adsorption tower to the volume of the buffer tank is 1.5-2.
Preferably, the gas source stored in the gas source storage tank is high-pressure high-purity nitrogen.
Preferably, one end of the return pipeline close to the buffer tank is provided with a ball valve.
Preferably, ball valves are installed on pipelines correspondingly communicated with the air supply pipelines of the two groups of adsorption towers.
Compared with the prior art, the beneficial effects of the utility model are that: the quick start system for preparing qualified nitrogen by pressure swing adsorption is characterized in that a return pipeline is additionally arranged on an original pressure swing adsorption nitrogen preparation system, a ball valve, a pressure reducing valve, a check valve, a safety valve, a pressure transmitter, a flow transmitter and an electromagnetic valve are sequentially arranged on the return pipeline, high-pressure high-purity nitrogen in an air source storage tank flows back into a buffer tank at a certain pressure and flow under the control of a PLC (programmable logic controller), so that the buffer tank is in a better nitrogen purity state before equipment is started, the replacement process of the buffer tank is accelerated, the nitrogen purity in the buffer tank is rapidly improved, the preparation time for preparing qualified nitrogen is rapidly shortened, the initial load of equipment nitrogen preparation is reduced, and energy is; in addition, pneumatic valves are installed on the air supply pipeline, the air delivery pipeline and the emptying pipeline, the pneumatic valves are interlocked with a nitrogen making machine of the nitrogen making system, when the equipment is stopped, the pneumatic valves are powered off and reset to be closed, the front air path and the rear air path of the buffer tank are physically isolated, and the nitrogen in the buffer tank is guaranteed to be in a qualified state for a long time after the equipment is stopped.
Drawings
Fig. 1 is a schematic view of the present invention.
In the figure: the system comprises an adsorption tower 1, a buffer tank 2, a return pipeline 3, an electromagnetic valve 4, a flow transmitter 5, a pressure transmitter 6, a safety valve 7, a check valve 8, a pressure reducing valve 9, a ball valve 10, an air source storage tank 11, a PLC (programmable logic controller) 12, a nitrogen purity analyzer 13, an emptying pipeline 14, an air transmission pipeline 15 and a pneumatic valve 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a quick start system for preparing qualified nitrogen by pressure swing adsorption comprises a buffer tank 2, two groups of adsorption towers 1 arranged in parallel, an air source storage tank 11 and a PLC (programmable logic controller) 12, wherein the adsorption towers 1 can be arranged in parallel according to actual production requirements, and the two groups of adsorption towers 1 are communicated with the buffer tank 2 through air supply pipelines; the buffer tank 2 is communicated with a gas transmission pipeline 15, the gas transmission pipeline 15 leads out a vent pipeline 14, one end of the gas transmission pipeline 15, which is close to the buffer tank 2, is communicated with a nitrogen purity analyzer 13, the nitrogen purity is analyzed on line through the nitrogen purity analyzer 13, the buffer tank 2 is continuously emptied outwards through the vent pipeline 14 before the nitrogen purity is unqualified, and the nitrogen purity in the buffer tank 2 is qualified through long-time repeated replacement, and then qualified nitrogen is output through the gas transmission pipeline 15; the gas source storage tank 11 is communicated with the buffer tank 2 through the return pipeline 3, and a ball valve 10, a pressure reducing valve 9, a check valve 8, a safety valve 7, a pressure transmitter 6, a flow transmitter 5 and a solenoid valve 4 are sequentially arranged on the return pipeline 3 from the gas source storage tank 11 to the buffer tank 2; the PLC 12 is electrically connected with the electromagnetic valve 4, the flow transmitter 5, the pressure transmitter 6 and the nitrogen purity analyzer 13, and the PLC 12 and the control mode thereof adopt the prior art, can be interconnected and communicated with a control system of equipment through Ethernet remote communication, and realize automatic and intelligent operation;
a return pipeline 3 is added on an original pressure swing adsorption nitrogen making system, a ball valve 10, a pressure reducing valve 9, a check valve 8, a safety valve 7, a pressure transmitter 6, a flow transmitter 5 and an electromagnetic valve 4 are sequentially arranged on the return pipeline 3, high-pressure high-purity nitrogen in an air source storage tank 11 is controlled by a PLC (programmable logic controller) 12 to flow back into a buffer tank 2 at a certain pressure and flow rate, so that the buffer tank 2 is in a better nitrogen purity state before equipment is started, the replacement process of the buffer tank 2 is accelerated, the nitrogen purity in the buffer tank 2 is rapidly improved, the preparation time for preparing qualified nitrogen is rapidly shortened, the initial load for preparing nitrogen by the equipment is reduced, the energy is saved, and the preparation time for preparing the qualified nitrogen is shortened to be within 30min from the traditional 2-4 h;
the end of the air supply pipeline close to the buffer tank 2, the end of the air delivery pipeline 15 far away from the buffer tank 2 and the emptying pipeline 14 are all provided with pneumatic valves 16, the pneumatic valves 16 are interlocked with a nitrogen making machine of the nitrogen making system, when the equipment is shut down, the pneumatic valves 16 are powered off, reset and closed, the front air channel and the rear air channel of the buffer tank 2 are physically isolated, and the nitrogen in the buffer tank 2 is ensured to be in a qualified state for a long time after the equipment is shut down;
theoretical calculation and practice prove that the ratio of the volume of each adsorption tower 1 to the volume of the buffer tank 2 is 1.5-2, and the volume of the buffer tank 2 is reduced as much as possible on the premise of ensuring stable gas transmission at the rear end, so that stable nitrogen output can be effectively ensured, and the nitrogen replacement time can be shortened;
the gas source storage tank 11 stores high-pressure high-purity nitrogen gas as a gas source; one end of the return pipeline 3 close to the buffer tank 2 is provided with a ball valve; ball valves are arranged on the pipelines correspondingly communicated with the air supply pipelines of the two groups of adsorption towers 1.
The working principle is as follows: before equipment shuts down restarts, open ball valve 10 on the return line, then control PLC controller 12, according to preset's judgement condition, with high-pressure high-purity nitrogen gas in the air supply storage tank 11 with certain pressure, flow backward flow is to buffer tank 2 in, make buffer tank 2 be in better nitrogen gas purity state before equipment starts, start original pressure swing adsorption nitrogen system afterwards, produce nitrogen gas and input buffer tank 2, the replacement process of nitrogen gas acceleration nitrogen gas tank 2 is refluxed, nitrogen gas purity analyzer 13 online analysis nitrogen gas purity simultaneously, before nitrogen gas purity is unqualified, buffer tank 2 is constantly through the outside evacuation of unloading pipeline 14, through replacing repeatedly, it is qualified until nitrogen gas purity in buffer tank 2, qualified nitrogen gas is exported by gas pipeline 15 afterwards.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides a quick start-up system of qualified nitrogen gas is prepared in pressure swing adsorption, includes buffer tank (2), two sets of adsorption tower (1) that set up side by side, air supply storage tank (11) and PLC controller (12), its characterized in that: the two groups of adsorption towers (1) are communicated with the buffer tank (2) through air supply pipelines; the buffer tank (2) is communicated with a gas transmission pipeline (15), the gas transmission pipeline (15) leads out an emptying pipeline (14), and one end of the gas transmission pipeline (15) close to the buffer tank (2) is communicated with a nitrogen purity analyzer (13); the gas source storage tank (11) is communicated with the buffer tank (2) through the return pipeline (3), and a ball valve (10), a pressure reducing valve (9), a check valve (8), a safety valve (7), a pressure transmitter (6), a flow transmitter (5) and a solenoid valve (4) are sequentially arranged on the return pipeline (3) from the gas source storage tank (11) to the buffer tank (2); and the PLC (12) is electrically connected with the electromagnetic valve (4), the flow transmitter (5), the pressure transmitter (6) and the nitrogen purity analyzer (13).
2. The rapid start-up system for pressure swing adsorption to produce qualified nitrogen as claimed in claim 1, wherein: pneumatic valves (16) are mounted on one end of the air supply pipeline close to the buffer tank (2), one end of the air supply pipeline (15) far away from the buffer tank (2) and the emptying pipeline (14), and the pneumatic valves (16) are interlocked with a nitrogen making machine of the nitrogen making system.
3. The rapid start-up system for pressure swing adsorption to produce qualified nitrogen as claimed in claim 1, wherein: the volume ratio of each adsorption tower (1) to the buffer tank (2) is 1.5-2.
4. The rapid start-up system for pressure swing adsorption to produce qualified nitrogen as claimed in claim 1, wherein: the gas source storage tank (11) stores high-pressure high-purity nitrogen gas as a gas source.
5. The rapid start-up system for pressure swing adsorption to produce qualified nitrogen as claimed in claim 1, wherein: and a ball valve is arranged at one end of the return pipeline (3) close to the buffer tank (2).
6. The rapid start-up system for pressure swing adsorption to produce qualified nitrogen as claimed in claim 1, wherein: and ball valves are arranged on the pipelines correspondingly communicated with the air supply pipelines of the two groups of adsorption towers (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021539240.6U CN213132564U (en) | 2020-07-29 | 2020-07-29 | Quick start system for preparing qualified nitrogen through pressure swing adsorption |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021539240.6U CN213132564U (en) | 2020-07-29 | 2020-07-29 | Quick start system for preparing qualified nitrogen through pressure swing adsorption |
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| CN213132564U true CN213132564U (en) | 2021-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290209A (en) * | 2021-05-11 | 2021-08-24 | 广西玉柴机器股份有限公司 | Air supplementing system for improving pressurization rate of air tank of core shooter |
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2020
- 2020-07-29 CN CN202021539240.6U patent/CN213132564U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290209A (en) * | 2021-05-11 | 2021-08-24 | 广西玉柴机器股份有限公司 | Air supplementing system for improving pressurization rate of air tank of core shooter |
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