CN202898559U - Protection system for preventing negative-pressure operation of hydrogen compressor - Google Patents
Protection system for preventing negative-pressure operation of hydrogen compressor Download PDFInfo
- Publication number
- CN202898559U CN202898559U CN 201220562546 CN201220562546U CN202898559U CN 202898559 U CN202898559 U CN 202898559U CN 201220562546 CN201220562546 CN 201220562546 CN 201220562546 U CN201220562546 U CN 201220562546U CN 202898559 U CN202898559 U CN 202898559U
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- hydrogen compressor
- dcs
- protection system
- hydrogen
- utility
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Abstract
The utility model discloses a protection system for preventing the negative-pressure operation of a hydrogen compressor. The protection system is characterized by comprising an air source, a pressure transmitter, the hydrogen compressor and a PLC (Programmable Logic Controller), wherein a DCS (Data Communication System) is arranged between the pressure transmitter and the PLC, and the DCS is connected with an alarm. Compared with the prior art, the protection system disclosed by the utility model has the advantage of ensuring that a system can urgently stop the operation of the hydrogen compressor in an abnormal operation state by adopting an advanced DCS control technology, thereby ensuring the safety of operators and equipment, namely the hydrogen compressor and the like.
Description
Technical field
The utility model relates to a kind of securing system that prevents the operation of hydrogen compressor negative pressure.
Background technology
When traditional hydrogen compressor electrolytic system unusual (stop in emergency, fall electric current, the exhaust system water seal is destroyed), when the hydrogen supply amount reduces in the interruption of hydrogen source or the front house steward of hydrogen compressor import, guarantee that by operative employee's monitoring, adjusting reverse flow valve the hydrogen compressor import has certain malleation and oxygen level to be lower than certain value to reach the purpose of safe operation merely.But the mode by operative employee's monitoring, adjusting has the following disadvantages: (1) finds that intake pressure changes (decline), regulates quantity of reflux and does not catch up with sudden change; (2) as in time not finding the intake pressure sudden change, adjust and air amount, oxygen level surpasses Lower Explosive Limit in the hydrogen compressor pressure chamber, (has electrical spark, high temperature, static) and blast in the air chamber that runs up.
The utility model content
The utility model provides a kind of securing system that prevents the operation of hydrogen compressor negative pressure in order to solve the above-mentioned deficiency of prior art.
Above-mentioned purpose of the present utility model realizes by following technical scheme: a kind of securing system that prevents the operation of hydrogen compressor negative pressure; it is characterized in that: comprise source of the gas, pressure unit, hydrogen compressor and PLC; be provided with DCS between described pressure unit and the PLC, described DCS connects warning howler.
The utility model adopts advanced DCS control techniques, reaches adjustment, control, guarantees that enough hydrogen (oxygen level is lower than 4%) supply is arranged in the front house steward of hydrogen compressor import.When normal operation, Central Control Room DCS can gather, process all data of whole production process pressurized with hydrogen system, and relevant device is opened/stopped to the live telecast of dynamic display equipment operation conditions, working condition and all kinds of parameters automatically according to these parameters on indicating meter.In case occur to send sound and light alarm when inlet gas pressure is lower than 2.5Kpa, computer is the display alarm point automatically.In addition, operator can also send steering order to the DCS controller by keyboard on supervisory control computer, and the work of control return valve is stablized the import hydrogen pressure to reach.In case when inlet gas pressure was lower than 1.5Kpa, DCS sent instruction to the hydrogen compressor power supply system, cuts off its power supply hydrogen compressor is stopped in emergency.After inlet gas pressure is higher than 1.5Kpa, can open arbitrarily, shut down.
The utility model advantage compared with prior art is: the utility model adopts advanced DCS control techniques, and the assurance system can move by the emergent stopping hydrogen compressor under abnormal operating condition, guarantees the device securities such as operative employee and hydrogen compressor.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, a kind of securing system that prevents the operation of hydrogen compressor negative pressure comprises source of the gas, pressure unit, hydrogen compressor and PLC, is provided with DCS between described pressure unit and the PLC, and described DCS connects warning howler.
The utility model adopts advanced DCS control techniques, reaches adjustment, control, guarantees that enough hydrogen (oxygen level is lower than 4%) supply is arranged in the front house steward of hydrogen compressor import.
When normal operation, Central Control Room DCS can gather, process all data of whole production process pressurized with hydrogen system, and relevant device is opened/stopped to the live telecast of dynamic display equipment operation conditions, working condition and all kinds of parameters automatically according to these parameters on indicating meter.In case occur to send sound and light alarm when inlet gas pressure is lower than 2.5Kpa, computer is the display alarm point automatically.In addition, operator can also send steering order to the DCS controller by keyboard on supervisory control computer, and the work of control return valve is stablized the import hydrogen pressure to reach.In case when inlet gas pressure was lower than 1.5Kpa, DCS sent instruction to the hydrogen compressor power supply system, cuts off its power supply hydrogen compressor is stopped in emergency.After inlet gas pressure is higher than 1.5Kpa, can open arbitrarily, shut down.
But above-mentioned embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses do anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (1)
1. a securing system that prevents the operation of hydrogen compressor negative pressure is characterized in that: comprise source of the gas, pressure unit, hydrogen compressor and PLC, be provided with DCS between described pressure unit and the PLC, described DCS connection warning howler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562546 CN202898559U (en) | 2012-10-30 | 2012-10-30 | Protection system for preventing negative-pressure operation of hydrogen compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562546 CN202898559U (en) | 2012-10-30 | 2012-10-30 | Protection system for preventing negative-pressure operation of hydrogen compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202898559U true CN202898559U (en) | 2013-04-24 |
Family
ID=48119251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220562546 Expired - Fee Related CN202898559U (en) | 2012-10-30 | 2012-10-30 | Protection system for preventing negative-pressure operation of hydrogen compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202898559U (en) |
-
2012
- 2012-10-30 CN CN 201220562546 patent/CN202898559U/en not_active Expired - Fee Related
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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: 20130424 Termination date: 20151030 |
|
| EXPY | Termination of patent right or utility model |