CN203489580U - Full-automatic air separation precooling device - Google Patents
Full-automatic air separation precooling device Download PDFInfo
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- CN203489580U CN203489580U CN201320609892.6U CN201320609892U CN203489580U CN 203489580 U CN203489580 U CN 203489580U CN 201320609892 U CN201320609892 U CN 201320609892U CN 203489580 U CN203489580 U CN 203489580U
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Abstract
The utility model relates to a full-automatic air separation precooling device. A first adjusting valve, a second adjusting valve, a third adjusting valve, a fourth adjusting valve, a fifth adjusting valve, a sixth adjusting valve, a seventh adjusting valve, an eighth adjusting valve, a cooling water pump, a chilled water pump, a first pressure sensor, a second pressure senor, a first water flow sensor, a second water flow sensor, a third pressure sensor, a water chilling unit, a water inlet cooling tower restriction orifice, a second liquid level sensor and a first liquid level sensor are arranged in the precooling device and respectively connected with a control unit. The second liquid level sensor is connected with the sixth adjusting valve. The first liquid level sensor is connected with a ninth adjusting valve. The fifth adjusting valve is connected with the water inlet cooling tower restriction orifice. The full-automatic air separation precooling device can achieve full automation.
Description
Technical field
The utility model relates to a kind of full-automatic sky and divides pre-cooler, belongs to empty minute field.
Background technology
Air separation plant performance and the international most advanced level of China are very approaching, but automaticity wretched insufficiency, and manpower workload is large.Even configure in good situation, be only also to accomplish that the control at some independent control point is fairly perfect, and the automated control technology of system also lack very much.Although domestic enterprise also, all in effort, has obtained progress at aspects such as working conditions change, still cannot break away from and take manual operation as main situation.
Because domestic skilled operation personnel are more sufficient, this necessity is still not urgent, still, in the international market, the product that automaticity is higher, its competitive advantage is just very obvious.The developed regions such as America and Europe, peopleware is high, but personnel cost is higher, staff generally more takes notice of the comfortableness of work, Deng Fei developed regions, Asia and Africa, and peopleware is lower, concerning sky divides the work that this operating technology content is high, be difficult to adapt to, they often are more ready to select expensive price, but the high product of automaticity.Therefore, improve the automation of product, intelligent degree, has wide market prospects in the world.
The system that the chilldown system of air separation plant is comprised of multicomputer multi-parts such as water pump, handpiece Water Chilling Units, cooling tower, control valves, in the operation task that operates in whole space division system of its run duration, occupy larger specific gravity, and operation easier is larger, its automaticity is not enough at present.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, full-automatic sky that automaticity is high to divide pre-cooler.
The technical scheme in the invention for solving the above technical problem is: 1, a kind of full-automatic sky divides pre-cooler, comprises air cooling compressor, water cooling tower, cooling water pump unit pipeline, chilled water pump unit pipeline; Air cooling compressor is connected has air inlet pipe road, recirculated water water return pipeline, air to go out pipeline; Water cooling tower is connected water the first pipeline, low pressure exhaust gas pipeline on recirculated water; On the inlet pipeline of cooling water pump unit pipeline and recirculated water, water the second pipeline is connected, and outlet pipeline and air cooling compressor are connected; The inlet pipeline of chilled water pump unit pipeline and water cooling tower are connected, and outlet pipeline and air cooling compressor are connected, and return line and water cooling tower are connected, and on the outlet pipeline of chilled water pump unit pipeline, are provided with handpiece Water Chilling Units; On described cooling water pump unit pipeline, be provided with cooling water pump; On described chilled water pump unit pipeline, be provided with chilled water pump; It is characterized in that:
Also comprise control module;
On described air inlet pipe road, be provided with the first control valve, the second control valve, the first baroceptor;
At described air, go out on pipeline, to be provided with the 3rd control valve, the 4th control valve, the second baroceptor, the 3rd baroceptor;
On described recirculated water water return pipeline, be provided with the 9th control valve;
On the outlet pipeline of described cooling water pump unit pipeline, be provided with the 8th control valve, the first water flow sensor;
On the outlet pipeline of described chilled water pump unit pipeline, be provided with the second water flow sensor, the 7th control valve, on the return line of chilled water pump unit pipeline, be provided with the 6th control valve;
On described recirculated water, on water the first pipeline, be provided with the 5th control valve, water inlet cooling tower restriction orifice;
In the pond of described air cooling compressor, be provided with the first liquid level sensor;
In the pond of described water cooling tower, be provided with the second liquid level sensor;
The first control valve, the second control valve, the 3rd control valve, the 4th control valve, the 5th control valve, the 6th control valve, the 7th control valve, the 8th control valve, cooling water pump, chilled water pump, the first baroceptor, the second air pressure sensing, the first water flow sensor, the second water flow sensor, the 3rd baroceptor, handpiece Water Chilling Units, water inlet cooling tower restriction orifice, the second liquid level sensor, the first liquid level sensor are all connected with control module; The second liquid level sensor is also connected with the 6th control valve; The first liquid level sensor is also connected with the 9th control valve; The 5th control valve is also connected with water inlet cooling tower restriction orifice.
Control module described in the utility model comprises the first control module, the second control module, the 3rd control module; The first described control valve, the second control valve, the first baroceptor are connected with the second control module; The 3rd described control valve, the 4th control valve, the second baroceptor are connected with the 3rd control module; The 5th described control valve, the 6th control valve, the 7th control valve, the 8th control valve, cooling water pump, chilled water pump, the first water flow sensor, the second water flow sensor, the 3rd baroceptor, handpiece Water Chilling Units, water inlet cooling tower restriction orifice, the first liquid level sensor, the second liquid level sensor are all connected with the first control module.
The utility model compared with prior art, has the following advantages and effect: reasonable in design, and whole chilldown system can independent operating, and has self-protection function, and chilldown system can be realized start & shutdown through one key, can realize full-automation, intelligent operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Referring to Fig. 1, the air cooling compressor AT of the utility model embodiment connects has air inlet pipe road 1, recirculated water water return pipeline 2, air to go out pipeline 3.
On air inlet pipe road 1, be provided with the first control valve V11, the second control valve V12, the first baroceptor PDIC11.The first control valve V11, the second control valve V12, the first baroceptor PDIC11 are connected with the second control module UZ1102, realize air flow circuit air inlet and control.
The first baroceptor PDIC11 function: when starting chilldown system, during first baroceptor PDIC11≤0.1bar, the first baroceptor PDIC11 feeds back signal to the second control module UZ1102, and the second control module UZ1102 allows to start the first control valve V11.By controlling the first baroceptor PDIC11, the impact that can avoid the first control valve V11 action to control surge resistance of air compressor, when the first baroceptor PDIC11 approaches 0, the opening speed of the first control valve V11 does not need to control, avoid the control requirement of the first control valve V11 complexity, simple to operate, safe and reliable.
The first control valve V11: controlled by the second control module UZ1102, is chilldown system air intlet main valve, can make chilldown system be independent of air compressor system and carry out start stop operation.The startup stage of chilldown system, during first baroceptor PDIC11≤0.1bar, controlled by the second control module UZ1102 and can allow to open; After purification system parking procedure completes, after water system stops, being subject to the second control module UZ1102 to control the first control valve V11 can directly close.
The second control valve V12: controlled by the second control module UZ1102, it is the by-passing valve of the first control valve V11, the startup stage of chilldown system, to chilldown system pressurising, after the first control valve V11 opens, the second control valve V12 closes, and it blocks flow and is less than the maximum changing amplitude requirement that surge resistance of air compressor is controlled requirement, therefore this valve at any time moves, can not cause compressor surge to occur.
At air, go out on pipeline 3, to be provided with the 3rd control valve V13, the 4th control valve V14, the second baroceptor PDIC13, the 3rd baroceptor PIAS1103.The 3rd control valve V13, the 4th control valve V14, the second baroceptor PDIC13 are connected with the 3rd control module UZ1103, realize the air flow circuit control of giving vent to anger.
The second baroceptor PDIC13: during again to follow-up system air feed, during second baroceptor PDIC13≤0.1bar, the second baroceptor PDIC13 feeds back signal to the 3rd control module UZ1103, and the 3rd control module UZ1103 allows to start the 3rd control valve V13.By controlling the second baroceptor PDIC13, the impact that can avoid the 3rd control valve V13 action to control surge resistance of air compressor, when PIDC13 approaches 0, the opening speed of the 3rd control valve V13 does not need to control, avoid the control requirement of the 3rd control valve V13 complexity, simple to operate, safe and reliable.
The 3rd control valve V13: controlled by the 3rd control module UZ1103, for chilldown system outlet main valve, can make chilldown system be independent of follow-up system and carry out start stop operation.Chilldown system to follow-up system air feed startup stage, during second baroceptor PDIC13≤0.1bar, controlled by the 3rd control module UZ1103 and can allow to open; After purification system parking procedure completes, after water system stops, after the first control valve V11 closes, controlled by the 3rd control module UZ1103 can directly close.
The 4th control valve V14: controlled by the 3rd control module UZ1103, it is the by-passing valve of the 3rd control valve V13, chilldown system to follow-up system air feed startup stage, to follow-up system pressurising, after the 3rd control valve V13 opens, the 4th control valve V14 closes, and it blocks flow and is less than the maximum changing amplitude requirement that surge resistance of air compressor is controlled requirement, therefore this valve at any time moves, can not cause compressor surge to occur.
On recirculated water water return pipeline 2, be provided with the 9th control valve V25.In the pond of air cooling compressor, be provided with the first liquid level sensor LICAS1102.The 9th control valve V25 and the first liquid level sensor LICAS1102 can be used for realizing air ECL and control.
Water cooling tower WT connects water the first pipeline 4, low pressure exhaust gas pipeline 5 on recirculated water.
On the inlet pipeline 10 of cooling water pump unit pipeline 6 and recirculated water, water the second pipeline 7 is connected, and outlet pipeline 11 is connected with air cooling compressor AT.On cooling water pump unit pipeline 6, be provided with cooling water pump, cooling water pump comprises the first water pump WP1 and the second water pump WP2, is provided with the 8th control valve V24, the first water flow sensor FL1101 on the outlet pipeline 11 of cooling water pump unit pipeline 6.
The inlet pipeline 12 of chilled water pump unit pipeline 9 is connected with water cooling tower WT, and outlet pipeline 13 is connected with air cooling compressor AT, and return line 14 is connected with water cooling tower WT.On chilled water pump unit pipeline 9, be provided with chilled water pump, chilled water pump comprises the 3rd water pump WP3 and the 4th water pump WP4, is provided with handpiece Water Chilling Units RU, the second water flow sensor FL1102, the 7th control valve V23 on the outlet pipeline 13 of chilled water pump unit pipeline 9.
On the return line 14 of chilled water pump unit pipeline, be provided with the 6th control valve V22.On recirculated water, on water the first pipeline 4, be provided with the 5th control valve V21, water inlet cooling tower restriction orifice FIC21.In the pond of water cooling tower WT, be provided with the second liquid level sensor LICA22.The 5th control valve V21, the 6th control valve V22, water inlet cooling tower restriction orifice FIC21, the second liquid level sensor LICA22 can be used for air ECL and control.
The 5th control valve V21, the 6th control valve V22, the 7th control valve V23, the 8th control valve V24, the first water pump WP1, the second water pump WP2, the 3rd water pump WP3, the 4th water pump WP4, the first water flow sensor FL1101, the second water flow sensor FL1102, the 3rd baroceptor PIAS1103, handpiece Water Chilling Units RU, water inlet cooling tower restriction orifice FIC21, the first liquid level sensor LICAS1102, the second liquid level sensor LICA22 are all connected with the first control module UZ1101.The second liquid level sensor LICA22 is also connected with the 6th control valve V22.The first liquid level sensor LICAS1102 is also connected with the 9th control valve V25.The 5th control valve V21 is also connected with FIC21.
The first water flow sensor FL1101: cooling water flow is fed back to the first control module UZ1101, and when being greater than setting value, the 8th control valve V24 aperture reduces one grade.
The second water flow sensor FL1102: chilled-water flow is fed back to the first control module UZ1101, and when being greater than design load, the 7th control valve V23 aperture reduces one grade.
Water inlet cooling tower restriction orifice FIC21: controlled by the first control module UZ1101 and move, preventing from exceeding permissible value into water cooling tower WT chilled-water flow.
The 5th control valve V21: controlled by the first control module UZ1101, by selecting suitable aperture, make to be controlled within the scope of maximum permissible flow into water cooling tower W T top chilled-water flow, meanwhile, can revise aperture by FIC21.
The 6th control valve V22: controlled by the first control module UZ1101, by refluxing after pump, control water cooling tower WT liquid level, guarantee that chilled water pump normally moves.The liquid level of water cooling tower WT is controlled and is controlled by the 6th control valve V22, with the liquid level of air cooling compressor AT, controls equally, belongs to directly and controlling, and is not subject to the impact of the lag factors such as volume of equipment, packed height, controls can restraining rapidly of parameter.
The 7th control valve V23: controlled by the first control module UZ1101, select suitable aperture, the flow of FI1102 is limited in safe range, avoid air cooling tower top band water, close during parking.
The 8th control valve V24: controlled by the first control module UZ1101, select suitable aperture, the flow of FI1101 is limited in safe range, avoid air cooling tower middle and lower part that liquid flooding occurs, close during parking.
The 3rd baroceptor PIAS1103: pressure signal is fed back to the first control module UZ1101, when pressure is lower than when setting value, control water pump by UZ1101 and stop.
Handpiece Water Chilling Units RU: controlled by the first control module UZ1101, automatically operation or parking.
The first water pump WP1 and the second water pump WP2: controlled by the first control module UZ1101, can automatic vent, and automatic start-stop, and can switch by undisturbed.
The 3rd water pump WP3 and the 4th water pump WP4: controlled by the first control module UZ1101, can automatic vent, and automatic start-stop, and can switch by undisturbed.
The second liquid level sensor LICA22: controlled by the first control module UZ1101 and control the 6th control valve V22, guaranteeing water cooling tower WT level stability, when the too high or too low alarm of liquid level.
The first liquid level sensor LICAS1102: controlled and control the 9th control valve V25 by the first control module UZ1101, guarantee air cooling compressor AT level stability, when the low alarm of liquid level, when liquid level is higher than when setting value, via the first control module UZ1101 interlock shutdown.
From the hot-air of air compressor, by the first control valve V11, enter air cooling compressor AT, in air cooling compressor AT with chilled water and cooling water direct contact heat transfer, after cooling, by air cooling compressor AT top, sent, through valve, the 3rd control valve V13 sends into next system, as purification system.
Part recirculated water from circulation, the part cooling tower WT top of anhydrating, at Ta Nei, carry out heat and mass exchange with the waste gas from space division system, carry out tentatively cooling, then through chilled water pump pressurization, cooling acquisition chilled water through handpiece Water Chilling Units RU, another part recirculated cooling water is after cooling water pump pressurization, enter the middle part of air cooling compressor, to air, carry out cooling, after chilled water and cooling water heat up in air cooling compressor AT, by air cooling compressor AT bottom, sent, return to circulation.
The utility model automatic operating process is as follows:
1. automation starts.
1.1. before starting, all control valves are in closed condition.
1.2. carry out startup command, will be undertaken by following program.
1.2.1. first start the second control module UZ1102, open the second control valve V12, to chilldown system pressurising, when the first baroceptor PDIC11 possesses entry condition, the first control valve V11 all opens, the second control valve V12 closes, and the second control module UZ1102 is finished, and starts the first control module UZ1101.
1.3. the 9th control valve V25 is controlled automatically by the first liquid level sensor LICAS1102.
1.3.1. the 5th control valve V21 reaches assigned address, to water cooling tower WT water-filling, when the second liquid level sensor LICA22 meets starting mode of pump condition, the 7th control valve V23, the 6th control valve V22 open to desired location, start the 3rd water pump WP3 and the 4th water pump WP4, if started unsuccessfully, re-execute the start-up routine of water pump.
1.3.2. the 6th control valve V22 is controlled automatically by the second liquid level sensor LICA22.
1.3.3. open the 8th control valve V24 to desired location, start the first water pump WP1 and the second water pump WP2, if started unsuccessfully, re-execute start-up routine.
1.3.4. under the second liquid level sensor LICA22, the condition of the first liquid level sensor LICAS1102 in plateau, start the 3rd control module UZ1103.
1.4. open the 4th control valve V14, to follow-up system pressurising, when the second baroceptor PDIC13 possesses entry condition, the 3rd control valve V13 all opens, and the 4th control valve V14 closes, and the 3rd control module UZ1103 is finished.
1.5. the automatic Starting of chilldown system is finished, and all the other Automatic Optimal are controlled does not affect automatic operating, does not explain.
2. automation troubleshooting.
2.1. when interlocking condition appears in system intrinsic parameter, the first control module UZ1101 will start parking procedure.
2.1.1. stop handpiece Water Chilling Units handpiece Water Chilling Units RU.
2.1.2. stop cooling water pump and chilled water pump.
2.1.3. close the related valves such as the 5th control valve V21, the 7th control valve V23, the 8th control valve V24.
2.1.4. purification system completes after parking, closes the first control valve V11.
2.1.5. close the 3rd control valve V13.
2.1.6. complete interlock shutdown.
2.2. when cooling water pump and the reduction of chilled water pump outlet pressure, while going air cooling compressor AT flow to be reduced to setting-up time continuously, the first control module UZ1101 starts water pump undisturbed changeover program, and system can normally be moved.
3. automation is stopped.
3.1. after follow-up system has stopped, start parking procedure.
The first control module UZ1101 will carry out parking procedure according to above-mentioned 2.1 steps.
The control program of control module, control technology principle etc. are not innovations of the present utility model.Control module can be independently PLC system, and the data of this system can be carried out exchanges data with the DCS system of whole air separation unit.Operating personnel are as long as send a startup command by DCS system to PLC, and whole chilldown system can complete full-automatic operation.
In addition, it should be noted that, the specific embodiment described in this description, the shape of its parts and components, institute's title of being named etc. can be different, and the above content described in this description is only to the explanation of the utility model structure example.
Claims (2)
1. a full-automatic empty minute pre-cooler, comprises air cooling compressor, water cooling tower, cooling water pump unit pipeline, chilled water pump unit pipeline; Air cooling compressor is connected has air inlet pipe road, recirculated water water return pipeline, air to go out pipeline; Water cooling tower is connected water the first pipeline, low pressure exhaust gas pipeline on recirculated water; On the inlet pipeline of cooling water pump unit pipeline and recirculated water, water the second pipeline is connected, and outlet pipeline and air cooling compressor are connected; The inlet pipeline of chilled water pump unit pipeline and water cooling tower are connected, and outlet pipeline and air cooling compressor are connected, and return line and water cooling tower are connected, and on the outlet pipeline of chilled water pump unit pipeline, are provided with handpiece Water Chilling Units; On described cooling water pump unit pipeline, be provided with cooling water pump; On described chilled water pump unit pipeline, be provided with chilled water pump; It is characterized in that:
Also comprise control module;
On described air inlet pipe road, be provided with the first control valve, the second control valve, the first baroceptor;
At described air, go out on pipeline, to be provided with the 3rd control valve, the 4th control valve, the second baroceptor, the 3rd baroceptor;
On described recirculated water water return pipeline, be provided with the 9th control valve;
On the outlet pipeline of described cooling water pump unit pipeline, be provided with the 8th control valve, the first water flow sensor;
On the outlet pipeline of described chilled water pump unit pipeline, be provided with the second water flow sensor, the 7th control valve, on the return line of chilled water pump unit pipeline, be provided with the 6th control valve;
On described recirculated water, on water the first pipeline, be provided with the 5th control valve, water inlet cooling tower restriction orifice;
In the pond of described air cooling compressor, be provided with the first liquid level sensor;
In the pond of described water cooling tower, be provided with the second liquid level sensor;
The first control valve, the second control valve, the 3rd control valve, the 4th control valve, the 5th control valve, the 6th control valve, the 7th control valve, the 8th control valve, cooling water pump, chilled water pump, the first baroceptor, the second air pressure sensing, the first water flow sensor, the second water flow sensor, the 3rd baroceptor, handpiece Water Chilling Units, water inlet cooling tower restriction orifice, the second liquid level sensor, the first liquid level sensor are all connected with control module; The second liquid level sensor is also connected with the 6th control valve; The first liquid level sensor is also connected with the 9th control valve; The 5th control valve is also connected with water inlet cooling tower restriction orifice.
2. full-automatic sky according to claim 1 divides pre-cooler, it is characterized in that: described control module comprises the first control module, the second control module, the 3rd control module; The first described control valve, the second control valve, the first baroceptor are connected with the second control module; The 3rd described control valve, the 4th control valve, the second baroceptor are connected with the 3rd control module; The 5th described control valve, the 6th control valve, the 7th control valve, the 8th control valve, cooling water pump, chilled water pump, the first water flow sensor, the second water flow sensor, the 3rd baroceptor, handpiece Water Chilling Units, water inlet cooling tower restriction orifice, the first liquid level sensor, the second liquid level sensor are all connected with the first control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609892.6U CN203489580U (en) | 2013-09-30 | 2013-09-30 | Full-automatic air separation precooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609892.6U CN203489580U (en) | 2013-09-30 | 2013-09-30 | Full-automatic air separation precooling device |
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| Publication Number | Publication Date |
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| CN203489580U true CN203489580U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320609892.6U Expired - Fee Related CN203489580U (en) | 2013-09-30 | 2013-09-30 | Full-automatic air separation precooling device |
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| CN (1) | CN203489580U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091504A (en) * | 2015-09-11 | 2015-11-25 | 开封黄河空分集团有限公司 | Energy-saving type test run device for water chilling unit |
| 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 |
| CN113932627A (en) * | 2021-09-02 | 2022-01-14 | 河南旭阳光电科技有限公司 | Circulating system of air cooling tower |
-
2013
- 2013-09-30 CN CN201320609892.6U patent/CN203489580U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091504A (en) * | 2015-09-11 | 2015-11-25 | 开封黄河空分集团有限公司 | Energy-saving type test run device for water chilling unit |
| 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 |
| CN113932627A (en) * | 2021-09-02 | 2022-01-14 | 河南旭阳光电科技有限公司 | Circulating system of air cooling tower |
| CN113932627B (en) * | 2021-09-02 | 2023-11-10 | 河南旭阳光电科技有限公司 | Circulation system of air cooling tower |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 312400, Shaoxing, Zhejiang, Shengzhou Pukou street, 288 South Avenue, west two floor Patentee after: Zoko Energy Equipment Co., Ltd. Address before: 310051, room 1509, No. 2401 bin Sheng Road, Hangzhou, Zhejiang, Binjiang District Patentee before: Zoko Energy Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20170930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |