CN202191820U - Normal-pressure space-division voltage transformation adsorption nitrogen generating system with integrated automatic control function - Google Patents
Normal-pressure space-division voltage transformation adsorption nitrogen generating system with integrated automatic control function Download PDFInfo
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- CN202191820U CN202191820U CN2011203301854U CN201120330185U CN202191820U CN 202191820 U CN202191820 U CN 202191820U CN 2011203301854 U CN2011203301854 U CN 2011203301854U CN 201120330185 U CN201120330185 U CN 201120330185U CN 202191820 U CN202191820 U CN 202191820U
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Abstract
The utility model discloses a normal-pressure space-division voltage transformation adsorption nitrogen generating system with an integrated automatic control function. The normal-pressure space-division voltage transformation adsorption nitrogen generating system comprises nitrogen generating equipment, wherein the nitrogen generating equipment is connected with a control cabinet; a total PLC (programmable logical controller) is arranged in the control cabinet; the total PLC is connected with the nitrogen generating equipment; the nitrogen generating equipment comprises an air compressor, a freeze dryer, a nitrogen generating machine and a nitrogen supercharger which are connected with one another sequentially; the air compressor, the freeze dryer, the nitrogen generating machine and the nitrogen supercharger are all connected with branched PLCs respectively; and the branched PLCs are all connected with the total PLC. The nitrogen generating system can overcome the defects in the conventional control system, simplifies the operation starting/stopping flow of the equipment particularly without sufficient operation staff, can monitor the operation alarm state of the equipment, can automatically switch to the standby machine when the equipment is in failure, and fulfills the aim of remotely automatically monitoring.
Description
Technical field
The utility model relates to a kind of nitrogen gas generating system, especially relates to a kind of empty pressure varying adsorption nitrogen making system that divides of normal temperature with integrated automatic control function, belongs to the industrial gasses field.
Background technology
Transformation absorption basic principle is to utilize adsorbent that adsorbate is had the different adsorption capacity under different pressures, and the characteristic that under certain pressure, has selection to adsorb again to each component of separated admixture of gas.Select at adsorbent under the condition of absorption, the impurity composition in the unstripped gas is removed in pressurization absorption, and decompression is deviate from these impurity and made adsorbent obtain regeneration.Therefore, generally adopt two adsorption towers, each adsorption column pressure that the conversion of cycle alternation is made up just can reach the purpose of continuous separating gas mixture.Because changing through pressure, the adsorption and desorption process realizes, so this technology is called transformation absorption.
In order to reach the purpose of oxygen, nitrogen separation, the air that is used for gas separating technology must and purify through compression.So general THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE is all wanted supporting independently air compressor and freeze drier; And the general nitrogen product pressure of transformation absorption is in 1MPa (gauge pressure; Down together), so when finally needing higher nitrogen pressure, just need supporting independently nitrogen supercharging machine with the gas end; And independent supporting air compressor, freeze drier and nitrogen supercharging machine all have the system that independently controls separately, can distinguish start and stop, have so just increased the operating procedure and the flow process of a whole set of equipment of making nitrogen; Simultaneously independently control system has warning system separately separately, checks one by one to the scene and handles in case equipment breaks down to have only, and is difficult for concentrating monitoring and handles.
The empty making nitrogen by pressure swing adsorption device and production process such as Fig. 1 thereof of dividing of existing normal temperature shows that the defective that it exists is following:
1. the startup flow process of equipment is following: a. starts freeze drier; The dew-point temperature of treating freeze drier drops to the value of requirement when following; Possesses the condition that starts air compressor; And depend on environment temperature the fall time of dew-point temperature, if environment temperature is too high, the time that dew point descends often surpasses half an hour; B. start air compressor, treat that the pressure of air pipe line and storage tank reaches more than the setting value, possess the condition that starts nitrogen making machine; C. start nitrogen making machine, treat the performance parameter of nitrogen, comprise that nitrogen flow, pressure and nitrogen gas purity are up to standard after; Possesses the condition that starts the nitrogen supercharging machine; And the nitrogen performance is up to standard, and generally the purity according to product nitrogen gas is different, and the time is not waited to half an hour at several clocks; E. start the nitrogen supercharging machine, make final nitrogen pressure reach the condition of user's request.Referring to manually booting or the logic relation picture of stopping process of accompanying drawing 2, Fig. 3.
In sum, about 1. the equipment overall startup probably needs dozens of minutes to 1 hour to running time.And equipment in the past all is the monomer operation that must rely on four units, and the people needs operating personnel to stand fast at the scene for starting or stoping always one by one, and is not only consuming time longer, also has the possibility of maloperation simultaneously;
2. arbitrary unit warning of breaking down in the equipment all can only be arrived and on-the-spotly could find and check solution, and can not automatically switch to other guest machines, and must be started the operation guest machine artificially.
The utility model content
The purpose of the utility model is to overcome the shortcoming and defect of above-mentioned prior art; A kind of empty pressure varying adsorption nitrogen making system that divides of normal temperature with integrated automatic control function is provided; This nitrogen gas generating system can overcome the defective that exists in the existing control system; Especially under the situation that does not have enough operating personnel, simplified operation of equipment start and stop flow process, and the operation alarm condition of ability real-time monitoring equipment; And when equipment breaks down, can automatically switch to standby host and use, realize the purpose of remote auto monitoring.
The purpose of the utility model realizes through following technical proposals: have the empty pressure varying adsorption nitrogen making system that divides of normal temperature of integrated automatic control function, comprise the equipment of making nitrogen, the said equipment of making nitrogen is connected with control cabinet.
Be provided with total PLC controller in the said control cabinet, said total PLC controller is connected with the equipment of making nitrogen.
The said equipment of making nitrogen comprises air compressor, freeze drier, nitrogen making machine and the nitrogen supercharging machine that connects successively, and said air compressor, freeze drier, nitrogen making machine, nitrogen supercharging machine are connected with branch PLC controller respectively; The PLC controller all was connected with total PLC controller in said minute.
Said total PLC controller is connected with a key start stop switch, and a said key start stop switch is arranged in the control cabinet.
In sum, the beneficial effect of the utility model is:
1. utilize and activated the remote control function that air compressor machine, freeze drier, nitrogen making machine and nitrogen supercharging machine carry, need not the transformation of system that above each unit is controlled;
2. reduced the operation of equipment link, realized long-range " key start and stop ", time and manpower is saved;
3. the PLC control module of secure can be guaranteed the stability and the accuracy of the system that controls, and equipment operation information accurately is provided, and carries out warning message promptly and accurately, guarantees that equipment can unmanned, improves the efficient of device discovery fault and handling failure;
4. the utility model is controlled the chain of system and DCS Distributed Control System through PLC; All control signals are uploaded to more higher leveled DCS Distributed Control System; Especially in certain applications occasions such as some integrated mill or oil gas field field works; Overcome the defective that exists in the prior art, realized the remote auto control of equipment effectively, had very high practical value.
Description of drawings
Fig. 1 is prior art system figure;
Fig. 2 is the start-up control system logic figure of prior art;
Fig. 3 is the shutdown control system logic figure of prior art;
Fig. 4 is the system diagram of the utility model;
Fig. 5 is the unlatching control system logic figure of the utility model;
Fig. 6 is the shutdown control system logic figure of the utility model.
Mark and corresponding parts title in the accompanying drawing: 1-air compressor; 2-freeze drier; 3-nitrogen making machine; 4-nitrogen supercharging machine; 5-total PLC controller; 6-minute PLC controller; 7-one key start stop switch.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is done further to specify, but the embodiment of the utility model is not limited only to this.
Embodiment:
Like Fig. 4, Fig. 5, shown in Figure 6, have the empty pressure varying adsorption nitrogen making system that divides of normal temperature of integrated automatic control function, comprise the equipment of making nitrogen, the said equipment of making nitrogen is connected with control cabinet.
Be provided with total PLC controller 5 in the said control cabinet, said total PLC controller 5 is connected with the equipment of making nitrogen.
The said equipment of making nitrogen comprises successively air compressor 1, freeze drier 2, nitrogen making machine 3 and the nitrogen supercharging machine 4 that connects, and said air compressor 1, freeze drier 2, nitrogen making machine 3, nitrogen supercharging machine 4 are connected with branch PLC controller 6 respectively; PLC controller 6 all was connected with total PLC controller 5 in said minute.
Be provided with branch PLC controller 6 between the said equipment of making nitrogen and the total PLC controller 5.Divide PLC controller 6 respectively each parts to be carried out concrete control.Open one when using simultaneously fully as two complete equipments as one, the subsequent use automatically each other of two covers or many complete equipments can be accomplished to the demand of gas performance and the duty of single equipment according to back-end client's end by this control system.
Said total PLC controller 5 is connected with a key start stop switch 7, and a said key start stop switch 7 is arranged in the control cabinet.Start through a key start stop switch 7 can the quick control whole system is shut down.The empty branch THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE of normal temperature generally comprises four unit such as air compressor 1, freeze drier 2, nitrogen making machine 3 and nitrogen supercharging machine 4; Each unit all has independently controls system; And increase a control cabinet that total PLC controller 5 is housed; With the control signal of above four unit connect, programming and chain control, realize " key start and stop ", i.e. behind the trigger equipment start and stop button; Air compressor 1, freeze drier 2, nitrogen making machine 3 and nitrogen supercharging machine 4 will progressively start and shut down according to the sequential of total PLC controller 5 customizations and control logic automatically, greatly simplify system's operating process.
The empty control flow logic of making nitrogen by pressure swing adsorption device of dividing of the normal temperature of the utility model is:
After long-range DCS system's execution long-range " key start and stop " order; Total PLC controller 5 obtains long-range " key start and stop " instruction; Divide at first automatic remote startup freeze drier 2 of PLC controller 6 output orders, the total PLC controller 5 of the dew point signal back of freeze drier 2 detects; Freeze drier 2 operations are normal when detecting; And after dew-point temperature is lower than setting; Divide secondly automatic remote startup air compressor 1 of PLC controller 6 output orders, the instrument air pressure signal of air compressor 1 outlet feeds back to total PLC controller 5 and detects; Air compressor 1 operation is normal when detecting, and after instrument air pressure is higher than setting value, divides PLC controller 6 output order automatic remotes to start nitrogen making machine 3.Running status and the total PLC controller 5 of each performance parameter signal back of nitrogen when nitrogen making machine 3; And it is normal when detecting nitrogen making machine 3 operations; And after each item nitrogen performance parameters index is up to standard; Divide the last automatic remote of PLC controller 6 output orders to start nitrogen supercharging machine 4, the pressure signal of nitrogen supercharging machine 4 outlets feeds back to total PLC controller 5 and detects.When detect nitrogen supercharging machine 4 outlet pressures up to standard after, automatically final products nitrogen is transported to the final gas point of using.
After long-range DCS system's execution long-range " key shutdown " order, total PLC controller 5 obtains long-range " key shutdown " instruction, and PLC output order at first automatic remote stops nitrogen supercharging machine 4; Be in stopped status when detecting nitrogen supercharging machine 4, one minute next automatic remote of output order of total PLC controller 5 time-delays stops nitrogen making machine 3; When the shutdown sequential flow process of nitrogen making machine 3 is finished; Detect nitrogen making machine 3 and be in stopped status; One minute output order automatic remote of total PLC controller 5 time-delays stops air compressor 1, has been in stopped status when detecting air compressor 1, and after equipment does not start once more in 30 minutes; Total last automatic remote of PLC controller 5 output orders stops freeze drier 2, so far shuts down flow process and finishes.
As stated, just can realize the utility model preferably.
Claims (4)
1. have the empty pressure varying adsorption nitrogen making system that divides of normal temperature of integrated automatic control function, comprise the equipment of making nitrogen, it is characterized in that: the said equipment of making nitrogen is connected with control cabinet.
2. the empty pressure varying adsorption nitrogen making system that divides of normal temperature with integrated automatic control function as claimed in claim 1, it is characterized in that: be provided with total PLC controller (5) in the said control cabinet, said total PLC controller (5) is connected with the equipment of making nitrogen.
3. the empty pressure varying adsorption nitrogen making system that divides of normal temperature with integrated automatic control function as claimed in claim 2; It is characterized in that: the said equipment of making nitrogen comprises air compressor (1), freeze drier (2), nitrogen making machine (3) and the nitrogen supercharging machine (4) that connects successively, and said air compressor (1), freeze drier (2), nitrogen making machine (3), nitrogen supercharging machine (4) are connected with branch PLC controller (6) respectively; Said minute the PLC controller (6) all be connected with total PLC controller (5).
4. like claim 1, the 2 or 3 described empty pressure varying adsorption nitrogen making systems that divide of normal temperature with integrated automatic control function; It is characterized in that: said total PLC controller (5) is connected with a key start stop switch (7), and a said key start stop switch (7) is arranged in the control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203301854U CN202191820U (en) | 2011-09-05 | 2011-09-05 | Normal-pressure space-division voltage transformation adsorption nitrogen generating system with integrated automatic control function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203301854U CN202191820U (en) | 2011-09-05 | 2011-09-05 | Normal-pressure space-division voltage transformation adsorption nitrogen generating system with integrated automatic control function |
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| CN202191820U true CN202191820U (en) | 2012-04-18 |
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| CN2011203301854U Expired - Fee Related CN202191820U (en) | 2011-09-05 | 2011-09-05 | Normal-pressure space-division voltage transformation adsorption nitrogen generating system with integrated automatic control function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936005A (en) * | 2012-11-27 | 2013-02-20 | 凯迈（洛阳）气源有限公司 | Nitrogen making machine and method |
| CN103539084A (en) * | 2013-10-17 | 2014-01-29 | 山东金宇实业股份有限公司 | Nitrogen system |
| CN109456809A (en) * | 2018-12-21 | 2019-03-12 | 开封黄河空分集团有限公司 | A kind of the biogas WATER-WASHING METHOD purification system and method for start & shutdown through one key |
| CN110044134A (en) * | 2019-03-29 | 2019-07-23 | 安徽加力气体有限公司 | Full-automatic one key start stop control method of nitrogen making machine system |
| CN112783034A (en) * | 2020-12-30 | 2021-05-11 | 乔治洛德方法研究和开发液化空气有限公司 | Control system and control method of air separation device |
| CN112967478A (en) * | 2021-02-01 | 2021-06-15 | 绍兴隆芙力智能科技发展有限公司 | Equipment expected maintenance early warning system and early warning device thereof |
| CN113279948A (en) * | 2021-06-23 | 2021-08-20 | 浙江益海嘉里食品工业有限公司 | Centralized control system and control method for air compressor |
-
2011
- 2011-09-05 CN CN2011203301854U patent/CN202191820U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936005A (en) * | 2012-11-27 | 2013-02-20 | 凯迈（洛阳）气源有限公司 | Nitrogen making machine and method |
| CN102936005B (en) * | 2012-11-27 | 2015-04-08 | 凯迈（洛阳）气源有限公司 | Nitrogen making machine and method |
| CN103539084A (en) * | 2013-10-17 | 2014-01-29 | 山东金宇实业股份有限公司 | Nitrogen system |
| CN109456809A (en) * | 2018-12-21 | 2019-03-12 | 开封黄河空分集团有限公司 | A kind of the biogas WATER-WASHING METHOD purification system and method for start & shutdown through one key |
| CN110044134A (en) * | 2019-03-29 | 2019-07-23 | 安徽加力气体有限公司 | Full-automatic one key start stop control method of nitrogen making machine system |
| CN112783034A (en) * | 2020-12-30 | 2021-05-11 | 乔治洛德方法研究和开发液化空气有限公司 | Control system and control method of air separation device |
| CN112783034B (en) * | 2020-12-30 | 2024-05-14 | 乔治洛德方法研究和开发液化空气有限公司 | Control system and control method of air separation device |
| CN112967478A (en) * | 2021-02-01 | 2021-06-15 | 绍兴隆芙力智能科技发展有限公司 | Equipment expected maintenance early warning system and early warning device thereof |
| CN113279948A (en) * | 2021-06-23 | 2021-08-20 | 浙江益海嘉里食品工业有限公司 | Centralized control system and control method for air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20140905 |
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| EXPY | Termination of patent right or utility model |