CN203948949U - Be adapted to the liquid propylene feedway of discontinuous operation - Google Patents
Be adapted to the liquid propylene feedway of discontinuous operation Download PDFInfo
- Publication number
- CN203948949U CN203948949U CN201420405562.XU CN201420405562U CN203948949U CN 203948949 U CN203948949 U CN 203948949U CN 201420405562 U CN201420405562 U CN 201420405562U CN 203948949 U CN203948949 U CN 203948949U
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- control valve
- magnetic drive
- drive pump
- relay
- gate
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Abstract
The utility model discloses a kind of liquid propylene feedway that is adapted to discontinuous operation, comprise that liquid propylene reclaims storage tank, emptying gas holder, gas separation unit, control valve, gate, safety check, filter, magnetic drive pump, pressure gauge and controller, the input end Bonding pressure table of controller, its output terminal is electrically connected to control valve and magnetic drive pump respectively, is connected with power supply terminal on controller.The utility model is reasonable in design, simple in structure, practical.Inlet and outlet at magnetic drive pump adds a cross-line and control valve and is equipped with controller, make it when propylene compressor outlet pressure is enough, can utilize the pressure reduction of propylene compressor outlet pressure and gas separation unit to make Propylene recovery be transported to gas separation unit without magnetic drive pump, during underpressure, just utilize magnetic drive pump.This device can reach manufacturing technique requirent, efficiently solves problems of the prior art, and reduces expenses, and reduces plant maintenance expense, has guaranteed device long-period stable operation.
Description
Technical field
The utility model relates to a kind of liquid propylene feedway that is adapted to discontinuous operation, and the liquid propylene reclaiming for chemical industry production process is to the conveying equipment of gas separation unit.
Background technique
In chemical industry production process, the liquid propylene reclaiming in process of production due to original system flow process is to utilize the effect of magnetic drive pump to be sent to gas separation unit, because equipment adopts, be the work of discontinuous mode of movement, in prior art, only adopt magnetic drive pump to carry, have following unfavorable aspect: 1, be not suitable for discontinuous operation, and in course of conveying, there will be pump depletion phenomenon, make production process not steady.2, magnetic drive pump often damages pump sealing surface when finding time, and because this pump has excellent sealing effect, generally there will not be leakage accident, so the somewhat expensive maintenance expenses that makes of pump seal face is higher.3, winter is in termination of pumping not during conveying material, and in the pump housing, water damages the possibility (otherwise add exactly companion's heat at the pump housing place of magnetic drive pump, just cause and increase steam consumption every day) of bad pump.Having a strong impact on device normally moves.Therefore in the urgent need to the feedway of a kind of cost-saving, Optimum Operation and steady production.
Summary of the invention
The purpose of this utility model is exactly the defect existing for prior art, and a kind of liquid propylene feedway that is adapted to discontinuous operation is provided, can be at assurance device is normal produce in the situation that cost-saving and Optimum Operation, and assurance device stable operation is simultaneously produced.
Its technological scheme is: the liquid propylene feedway that is adapted to discontinuous operation, comprise that liquid propylene reclaims storage tank, emptying gas holder, gas separation unit, control valve, gate, safety check, filter, magnetic drive pump, pressure gauge and controller, the output pipeline that liquid propylene reclaims storage tank passes through safety check in turn, the first gate is connected with one end of the first control valve and one end of the second gate, the other end of the second gate is connected with emptying gas holder, the other end of the first control valve is connected with the input end pipeline of magnetic drive pump by the first filter, magnetic force delivery side of pump is connected with gas separation unit pipeline by the second control valve and the 3rd gate, between the lower end of described the first gate and the lower end of the 3rd gate, be connected a crossover piping, this crossover piping is provided with the 3rd control valve and the second filter, the output pipeline that described liquid propylene reclaims storage tank is provided with pressure gauge, the input end Bonding pressure table of described controller, and its output terminal is electrically connected to the first control valve, the second control valve, the 3rd control valve and magnetic drive pump respectively, is connected with power supply terminal on controller.
Wherein, described controller is by switch, the first relay and the second relay form, one end of described power supply terminal is connected with one end of manometric moved end the first relay contact and one end of the second relay contact, one end of the other end of the first relay contact and the first control valve, one end of the second control valve and one end of magnetic drive pump are connected, the other end of the second relay contact is connected with one end of the 3rd control valve, the low contact of manometric pressure is connected with one end of the first relay, the high contact of manometric pressure is connected with one end of the second relay, the other end of described power supply terminal is by the other end of switch and the first relay, the other end of the second relay, the other end of the first control valve, the other end of the second control valve, the 3rd the other end of control valve and the other end of magnetic drive pump are connected.Described pressure gauge is pressure gauge with electric contact.Described the first control valve, the second control valve and the 3rd control valve are mortor operated valve or solenoid valve.
The utility model compared with prior art, has the following advantages: reasonable in design, simple in structure, practical.By adding a cross-line and control valve in magnetic drive pump inlet and outlet and being equipped with controller, make it when propylene compressor outlet pressure is enough, can utilize the pressure reduction of propylene compressor outlet pressure and gas separation unit to make Propylene recovery be transported to gas separation unit without magnetic drive pump, only, when propylene compressor outlet pressure is not enough, just utilize magnetic drive pump.This device can reach manufacturing technique requirent, efficiently solves problems of the prior art, and reduces expenses, and reduces plant maintenance expense, has guaranteed device long-period stable operation.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment's of the utility model structural representation;
Fig. 2 is a kind of embodiment's of the utility model circuit diagram.
Embodiment
With reference to Fig. 1-Fig. 2, a kind of liquid propylene feedway that is adapted to discontinuous operation, comprise that liquid propylene reclaims storage tank 1, emptying gas holder 2, gas separation unit 3, control valve, gate, safety check, filter, magnetic drive pump, pressure gauge and controller, liquid propylene reclaims the output pipeline of storage tank 1 in turn by safety check 4, the first gate 5 is connected with one end of the first control valve 6 and one end of the second gate 7, the other end of the second gate 7 is connected with emptying gas holder 2, the other end of the first control valve 6 is connected with the input end pipeline of magnetic drive pump 9 by the first filter 8, the output terminal of magnetic drive pump 9 is connected with gas separation unit 3 pipelines by the second control valve 10 and the 3rd gate 11, between the lower end of described the first gate 5 and the lower end of the 3rd gate 11, be connected a crossover piping 12, this crossover piping 12 is provided with the 3rd control valve 13 and the second filter 14, the output pipeline that described liquid propylene reclaims storage tank 1 is provided with pressure gauge 15, the input end Bonding pressure table 15 of described controller 16, its output terminal is electrically connected to the first control valve 6, the second control valve 10, the 3rd control valve 13 and magnetic drive pump 9 respectively, is connected with power supply terminal 17 on controller 16.Wherein, described controller 16 is by switch 161, the first relay 162 and the second relay 163 form, one end of described power supply terminal 17 is connected with one end of moved end the first relay contact 162-1 and one end of the second relay contact 163-1 of pressure gauge 15, one end of the other end of the first relay contact 162-1 and the first control valve 6, one end of one end of the second control valve 10 and magnetic drive pump 9 is connected, the other end of the second relay contact 163-1 is connected with one end of the 3rd control valve 13, the low contact of pressure of pressure gauge 15 is connected with one end of the first relay 162, the high contact of pressure of pressure gauge 15 is connected with one end of the second relay 163, the other end of described power supply terminal 17 is by the other end of switch 161 and the first relay 162, the other end of the second relay 163, the other end of the first control valve 6, the other end of the second control valve 10, the other end of the other end of the 3rd control valve 13 and magnetic drive pump 9 is connected.Described pressure gauge 15 is pressure gauge with electric contact.Described the first control valve 6, the second control valve 10 and the 3rd control valve 13 are mortor operated valve or solenoid valve.
In the utility model, the low contact of pressure of described pressure gauge 15 is at pressure during lower than setting value, and the Yu Qi moved end, the low contact of pressure of pressure gauge 15 connects; The high contact of pressure of described pressure gauge 15 is normal at pressure or during higher than setting value, the Yu Qi moved end, the high contact of pressure of pressure gauge 15 connects.
During operation, the power supply terminal of this device 17 is connected to power supply, in the time of need to carrying propylene to gas separation unit, switch 161 in opening controller 16, now, pressure gauge 15 as sense when liquid propylene reclaims pressure (this pressure comes from propylene compressor outlet) in storage tank 1 output pipeline higher than setting value (as 3MP), between the Yu Qi moved end, the high contact of pressure of pressure gauge 15, connect conducting, Yu Qi moved end, the low contact of pressure disconnects, the second relay 163 adhesives, the 163-1 conducting of its contact, the 3rd control valve 13 is open-minded, due to the first relay 162 not adhesives, so the first control valve 6, the second control valve 10 and magnetic drive pump 9 all can not get power supply and do not work.At this moment, liquid propylene reclaims storage tank 1 inner propene by safety check 4, the first gate 5, the 3rd control valve 13, the second filter 14 and the 3rd gate 11 on its output pipeline, enters gas separation unit 3 under the effect of propylene compressor outlet pressure.
When pressure gauge 15 senses that liquid propylene reclaims pressure (this pressure comes from propylene compressor outlet) in storage tank 1 output pipeline lower than setting value (as 3MP), between the Yu Qi moved end, the low contact of pressure of pressure gauge 15, connect conducting, Yu Qi moved end, the high contact of pressure disconnects, the first relay 162 adhesives, the 162-1 conducting of its contact, the first control valve 6, the second control valve 10 and magnetic drive pump 9 all obtain power supply and work.Therefore due to the first relay 163 not adhesives, the 3rd control valve 13 can not get power supply and open-minded.At this moment, liquid propylene reclaims storage tank 1 inner propene by safety check 4, the first gate 5, the first control valve 6, the first filter 8, magnetic drive pump 9, the second control valve 10 and the 3rd gate 11 on its output pipeline, enters gas separation unit 3 under the effect of magnetic drive pump 9.The open and close of the interior switch 161 of controller 16 for discontinuous operation, and there will not be pump depletion phenomenon in course of conveying, make production process not steady.
The utility model is reasonable in design, simple in structure, practical.Inlet and outlet at magnetic drive pump adds a cross-line and control valve and is equipped with controller, make it when propylene compressor outlet pressure is enough, can utilize the pressure reduction of propylene compressor outlet pressure and gas separation unit to make Propylene recovery be transported to gas separation unit without magnetic drive pump, only, when propylene compressor outlet pressure is not enough, just utilize magnetic drive pump.This device can reach manufacturing technique requirent, efficiently solves problems of the prior art, and reduces expenses, and reduces plant maintenance expense, has guaranteed device long-period stable operation.
Claims (4)
1. be adapted to the liquid propylene feedway of discontinuous operation, comprise that liquid propylene reclaims storage tank, emptying gas holder, gas separation unit, control valve, gate, safety check, filter, magnetic drive pump, pressure gauge and controller, it is characterized in that: the output pipeline that liquid propylene reclaims storage tank passes through safety check in turn, the first gate is connected with one end of the first control valve and one end of the second gate, the other end of the second gate is connected with emptying gas holder, the other end of the first control valve is connected with the input end pipeline of magnetic drive pump by the first filter, magnetic force delivery side of pump is connected with gas separation unit pipeline by the second control valve and the 3rd gate, between the lower end of described the first gate and the lower end of the 3rd gate, be connected a crossover piping, this crossover piping is provided with the 3rd control valve and the second filter, the output pipeline that described liquid propylene reclaims storage tank is provided with pressure gauge, the input end Bonding pressure table of described controller, and its output terminal is electrically connected to the first control valve, the second control valve, the 3rd control valve and magnetic drive pump respectively, is connected with power supply terminal on controller.
2. the liquid propylene feedway that is adapted to discontinuous operation according to claim 1, it is characterized in that: described controller is by switch, the first relay and the second relay form, one end of described power supply terminal is connected with one end of manometric moved end the first relay contact and one end of the second relay contact, one end of the other end of the first relay contact and the first control valve, one end of the second control valve and one end of magnetic drive pump are connected, the other end of the second relay contact is connected with one end of the 3rd control valve, the low contact of manometric pressure is connected with one end of the first relay, the high contact of manometric pressure is connected with one end of the second relay, the other end of described power supply terminal is by the other end of switch and the first relay, the other end of the second relay, the other end of the first control valve, the other end of the second control valve, the 3rd the other end of control valve and the other end of magnetic drive pump are connected.
3. the liquid propylene feedway that is adapted to discontinuous operation according to claim 1 and 2, is characterized in that: described pressure gauge is pressure gauge with electric contact.
4. the liquid propylene feedway that is adapted to discontinuous operation according to claim 1 and 2, is characterized in that: described the first control valve, the second control valve and the 3rd control valve are mortor operated valve or solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420405562.XU CN203948949U (en) | 2014-07-23 | 2014-07-23 | Be adapted to the liquid propylene feedway of discontinuous operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420405562.XU CN203948949U (en) | 2014-07-23 | 2014-07-23 | Be adapted to the liquid propylene feedway of discontinuous operation |
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| Publication Number | Publication Date |
|---|---|
| CN203948949U true CN203948949U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420405562.XU Expired - Fee Related CN203948949U (en) | 2014-07-23 | 2014-07-23 | Be adapted to the liquid propylene feedway of discontinuous operation |
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| CN (1) | CN203948949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538455A (en) * | 2017-09-21 | 2019-03-29 | 贵港市厚顺信息技术有限公司 | A kind of energy saving of chemical industry method of flexible utilization pump |
-
2014
- 2014-07-23 CN CN201420405562.XU patent/CN203948949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538455A (en) * | 2017-09-21 | 2019-03-29 | 贵港市厚顺信息技术有限公司 | A kind of energy saving of chemical industry method of flexible utilization pump |
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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: 20141119 Termination date: 20150723 |
|
| EXPY | Termination of patent right or utility model |