CN102418690A - Safety protector for fuel drive compressor unit - Google Patents
Safety protector for fuel drive compressor unit Download PDFInfo
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- CN102418690A CN102418690A CN2011104024092A CN201110402409A CN102418690A CN 102418690 A CN102418690 A CN 102418690A CN 2011104024092 A CN2011104024092 A CN 2011104024092A CN 201110402409 A CN201110402409 A CN 201110402409A CN 102418690 A CN102418690 A CN 102418690A
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Abstract
The invention relates to a safety protector for a fuel drive compressor unit, which aims to overcome the defects that the conventional safety protector for the fuel drive compressor unit has only one control circuit, and if the control circuit fails, the whole safety protector is uncontrolled. The safety protector comprises a master control circuit, a network transmission bus, a remote input/output (I/O) control circuit, an isolator terminal board and a redundancy control circuit, wherein a communication port of the master control circuit is connected with the remote I/O control circuit through the network transmission bus; output ends of digital signals and analog signals of the isolator terminal board are connected with corresponding signal input ends of the remote I/O control circuit; and a communication port of the redundancy control circuit is connected with another communication port of the remote I/O control circuit through the network transmission bus. The safety protector is used for guaranteeing safe, reliable and stable operation of fuel drive compressor unit equipment.
Description
Technical field
The present invention relates to a kind of combustion drive compressor group safety protector.
Background technique
At present, the domestic power plant that on natural-gas transfer pipeline, adopted are most of to be combustion drive compressor group, thereby guarantees that safe, reliable, the stable operation of combustion drive compressor group equipment is significant to the whole West-East National Gas Transmission Project of China.Yet the combustion drive compressor group safety protector that uses now has only a control circuit, if this control circuit breaks down, whole safety protector will be out of control.
Summary of the invention
The objective of the invention is to have only a control circuit to the combustion drive compressor group safety protector that uses now, if this control circuit breaks down, the defective that whole safety protector will be out of control provides a kind of combustion drive compressor group safety protector.
Combustion drive compressor group safety protector, it comprises main control circuit, network transfer bus, remote I/O control circuit and isolator terminal board; The COM1 of main control circuit is connected with a COM1 of remote I/O control circuit through the network transfer bus; The digital signal output end of isolator terminal board connects the digital signal input end of remote I/O control circuit; The analog signal output of isolator terminal board connects the input end of analog signal of remote I/O control circuit; It also comprises redundancy control circuit, and the COM1 of described redundancy control circuit is connected with another COM1 of remote I/O control circuit through the network transfer bus.
Working principle of the present invention is when making combustion drive compressor group safety protector start following arbitrary signal to send, and the unit that is moving is stopped according to preset program immediately, and trigger signal is to firing drive compressor group monitoring unit and actuator; The automatic closes compression unit of combustion drive compressor group monitoring unit terminal valve; Open the anti-surge valve, compressor bank and associated conduit decompression, fuel inlet valve is blocked by actuator; Open the fuel atmospheric valve, close the fuel gas supply system.The action of combustion drive compressor group safety protector all is a block signal, before the instruction of not receiving manual reset, can not start compressor bank once more.
Main control circuit and redundancy control circuit structural arrangements are identical; Main control circuit, redundancy control circuit and remote I/O control circuit are through
safety integrity level (SIL) authentication, meet that SIL 2 requires.
The startup of combustion drive compressor group safety protector mainly comprises following signal:
Hypervelocity stopping signal (from the turbine over speed protection); Vibration stopping signal (from the vibrational state detector);
Overtemperature stopping signal (from the unit temperature transducer); Pressure hangs down stopping signal (from the unit pressure switch);
Fire, combustion gas stopping signal (from fire, combustion gas detector); The control command signal of standing (from station control button);
On-the-spot command signal (from on-the-spot button); Control system command signal (coming spontaneous combustion drive compressor group monitoring unit).
Advantage of the present invention is: can independently solve whole combustion drive compressor group and security-related parking;
Combustion drive compressor group safety protector has adopted higher Redundant Control mode of reliability and Redundant Control network-bus structure; Avoided producing mistakenly stop machine phenomenon because significant trouble appears in malfunctioning, program of controller frame firmware or control network; The processing cycle that its internal processes is not more than 20ms provides effective guarantee for the safety of unit especially; Reliability is high, and speed of response is fast; The combustion drive compressor group safety protector that has solved present use has only a control circuit, if this control circuit breaks down, and the defective that whole safety protector will be out of control;
The operation of combustion drive compressor group safety protector is used very simple, as long as just after supplying power without any need for operation, equipment can be started working automatically, operation maintenance is convenient.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Embodiment one: below in conjunction with Fig. 1 this mode of execution is described,
Combustion drive compressor group safety protector, it comprises main control circuit 1, network transfer bus 3, remote I/O control circuit 4 and isolator terminal board 5; The COM1 of main control circuit 1 is connected with a COM1 of remote I/O control circuit 4 through network transfer bus 3; The digital signal output end of isolator terminal board 5 connects the digital signal input end of remote I/O control circuit 4; The analog signal output of isolator terminal board 5 connects the input end of analog signal of remote I/O control circuit 4; It is characterized in that it also comprises redundancy control circuit 2, the COM1 of described redundancy control circuit 2 is connected with another COM1 of remote I/O control circuit 4 through network transfer bus 3.
Embodiment two: below in conjunction with Fig. 1 this mode of execution is described, this mode of execution is to the further specifying of mode of execution one,
Second source module 17-2 is used for to redundancy control circuit 2 power supplies; The second processor module 18-2 is used for control and data operation; The second network transmission module 19-2 is as the COM1 of redundancy control circuit 2 with network transfer bus 3; Whether the second redundant judging module 20-2 is used for adopting the judgement of redundancy of effort pattern and synchronization of data to upgrade.
Embodiment three: below in conjunction with Fig. 1 this mode of execution is described, this mode of execution is to the further specifying of mode of execution one,
The first power module 17-1 is used for to main control circuit 1 power supply; First processor module 18-1 is used for control and data operation; The first network transmission module 19-1 is as the COM1 of main control circuit 1 with network transfer bus 3; Whether the first redundant judging module 20-1 is used for adopting the judgement of redundancy of effort pattern and synchronization of data to upgrade.
Embodiment four: below in conjunction with Fig. 1 this mode of execution is described, this mode of execution is to the further specifying of mode of execution one,
Remote I/O control circuit 4 comprises the 3rd power module 17-3, the 3rd network transmission module 19-3, digital quantity input module 21, digital quantity output module 22 and analog amount load module 23;
The 3rd power module 17-3 is used for to 4 power supplies of remote I/O control circuit; The 3rd network transmission module 19-3 is as the COM1 of remote I/O control circuit 4 with network transfer bus 3; Digital quantity input module 21 is used to gather digital signal; Digital quantity output module 22 is used to send digital signal; Analog amount load module 23 is used to gather analogue signal.
This mode of execution also comprises following content:
Combustion drive compressor group safety protector hypervelocity dead halt mode of execution:
Generating unit speed sensor 15 sends the speed-frequency signal to turbine over speed protection 6; 6 pairs of signals of turbine over speed protection carry out check and analysis; When surpassing setting threshold; Can send the signal with the relay contact form, signal is isolated the passage of conversion with the digital quantity input module 21 of d. c. voltage signal form entering remote I/O control circuit 4 through isolation end daughter board 5, and the state of this passage is changed; The network transmission module 19-3 of remote I/O control circuit 4 can read the state of this passage through core bus, and this state is put into the ephemeral data buffer area with the form of data.The network transmission module 19-1 of main control circuit 1 also can set up the corresponding ephemeral data buffer area with the network transmission module 19-3 of remote I/O control circuit 4; And read the data of the network transmission module 19-3 ephemeral data buffer area of remote I/O control circuit 4 through Redundant Control network-bus 3, these data are write the ephemeral data buffer area of oneself.The processor module 18-1 of main control circuit 1 carries out the judgement of dead halt logic through the software program of automatic operation to the data of the network transmission module 19-1 of main control circuit 1; Judging that this is overspeed condition needs immediately behind the dead halt; To change output state; This state is write the ephemeral data buffer area of the network transmission module 19-1 of main control circuit 1 with data mode; The network transmission module 19-1 of main control circuit 1 can write new data the ephemeral data buffer area of the network transmission module 19-3 of remote I/O control circuit 4 through Redundant Control network-bus 3; These data will make a channel status of the digital quantity output module 22 of remote I/O control circuit 4 change; The d. c. voltage signal of output is delivered to combustion drive compressor group monitoring unit 13 and actuator 14 through the isolation conversion treatment of isolator terminal board 5, thereby accomplishes the dead halt of unit.
The mode of execution that combustion drive compressor group safety protector vibration safety is shut down:
Combustion drive compressor group safety protector overtemperature dead halt mode of execution:
The mode of execution that combustion drive compressor group safety protector pressure lower security is shut down:
The mode of execution that combustion drive compressor group safety protector fire, gas safe are shut down:
The normally opened contact signal that fire, combustion gas detector 10 send is isolated conversion gets into the digital quantity input module 21 of remote I/O control circuit 4 with the d. c. voltage signal form a passage through isolation end daughter board 5; The state of this passage is changed; The network transmission module 19-3 of remote I/O control circuit 4 can read the state of this passage through core bus, and this state is put into the ephemeral data buffer area with the form of data.The network transmission module 19-1 of main control circuit 1 also can set up the corresponding ephemeral data buffer area with the network transmission module 19-3 of remote I/O control circuit 4; And read the data of the network transmission module 19-3 ephemeral data buffer area of remote I/O control circuit 4 through Redundant Control network-bus 3, these data are write the ephemeral data buffer area of oneself.The processor module 18-1 of main control circuit 1 carries out the judgement of dead halt logic through the software program of automatic operation to the data of the network transmission module 19-1 of main control circuit 1; Judging that this is overspeed condition needs immediately behind the dead halt; To change output state; This state is write the ephemeral data buffer area of the network transmission module 19-1 of main control circuit 1 with data mode; The network transmission module 19-1 of main control circuit 1 can write new data the ephemeral data buffer area of the network transmission module 19-3 of remote I/O control circuit 4 through Redundant Control network-bus 3; These data will make a channel status of the digital quantity output module 22 of remote I/O control circuit 4 change; The d. c. voltage signal of output is delivered to combustion drive compressor group monitoring unit 13 and actuator 14 through the isolation conversion treatment of isolator terminal board 5, thereby accomplishes the dead halt of unit.
The mode of execution of combustion drive compressor group safety protector station control dead halt:
The normally opened contact signal that the control button 11 of standing sends is isolated conversion gets into the digital quantity input module 21 of remote I/O control circuit 4 with the d. c. voltage signal form a passage through isolation end daughter board 5; The state of this passage is changed; The network transmission module 19-3 of remote I/O control circuit 4 can read the state of this passage through core bus, and this state is put into the ephemeral data buffer area with the form of data.The network transmission module 19-1 of main control circuit 1 also can set up the corresponding ephemeral data buffer area with the network transmission module 19-3 of remote I/O control circuit 4; And read the data of the network transmission module 19-3 ephemeral data buffer area of remote I/O control circuit 4 through Redundant Control network-bus 3, these data are write the ephemeral data buffer area of oneself.The processor module 18-1 of main control circuit 1 carries out the judgement of dead halt logic through the software program of automatic operation to the data of the network transmission module 19-1 of main control circuit 1; Judging that this is overspeed condition needs immediately behind the dead halt; To change output state; This state is write the ephemeral data buffer area of the network transmission module 19-1 of main control circuit 1 with data mode; The network transmission module 19-1 of main control circuit 1 can write new data the ephemeral data buffer area of the network transmission module 19-3 of remote I/O control circuit 4 through Redundant Control network-bus 3; These data will make a channel status of the digital quantity output module 22 of remote I/O control circuit 4 change; The d. c. voltage signal of output is delivered to combustion drive compressor group monitoring unit 13 and actuator 14 through the isolation conversion treatment of isolator terminal board 5, thereby accomplishes the dead halt of unit.
The mode of execution of the on-the-spot order of combustion drive compressor group safety protector dead halt:
The normally opened contact signal that on-the-spot button 12 sends is isolated conversion gets into the digital quantity input module 21 of remote I/O control circuit 4 with the d. c. voltage signal form a passage through isolation end daughter board 5; The state of this passage is changed; The network transmission module 19-3 of remote I/O control circuit 4 can read the state of this passage through core bus, and this state is put into the ephemeral data buffer area with the form of data.The network transmission module 19-1 of main control circuit 1 also can set up the corresponding ephemeral data buffer area with the network transmission module 19-3 of remote I/O control circuit 4; And read the data of the network transmission module 19-3 ephemeral data buffer area of remote I/O control circuit 4 through Redundant Control network-bus 3, these data are write the ephemeral data buffer area of oneself.The processor module 18-1 of main control circuit 1 carries out the judgement of dead halt logic through the software program of automatic operation to the data of the network transmission module 19-1 of main control circuit 1; Judging that this is overspeed condition needs immediately behind the dead halt; To change output state; This state is write the ephemeral data buffer area of the network transmission module 19-1 of main control circuit 1 with data mode; The network transmission module 19-1 of main control circuit 1 can write new data the ephemeral data buffer area of the network transmission module 19-3 of remote I/O control circuit 4 through Redundant Control network-bus 3; These data will make a channel status of the digital quantity output module 22 of remote I/O control circuit 4 change; The d. c. voltage signal of output is delivered to combustion drive compressor group monitoring unit 13 and actuator 14 through the isolation conversion treatment of isolator terminal board 5, thereby accomplishes the dead halt of unit.
The mode of execution of combustion drive compressor group safety protector control system order dead halt:
And the normally opened contact signal that combustion drive compressor group monitoring unit 13 sends is isolated conversion gets into the digital quantity input module 21 of remote I/O control circuit 4 with the d. c. voltage signal form a passage through isolation end daughter board 5; The state of this passage is changed; The network transmission module 19-3 of remote I/O control circuit 4 can read the state of this passage through core bus, and this state is put into the ephemeral data buffer area with the form of data.The network transmission module 19-1 of main control circuit 1 also can set up the corresponding ephemeral data buffer area with the network transmission module 19-3 of remote I/O control circuit 4; And read the data of the network transmission module 19-3 ephemeral data buffer area of remote I/O control circuit 4 through Redundant Control network-bus 3, these data are write the ephemeral data buffer area of oneself.The processor module 18-1 of main control circuit 1 carries out the judgement of dead halt logic through the software program of automatic operation to the data of the network transmission module 19-1 of main control circuit 1; Judging that this is overspeed condition needs immediately behind the dead halt; To change output state; This state is write the ephemeral data buffer area of the network transmission module 19-1 of main control circuit 1 with data mode; The network transmission module 19-1 of main control circuit 1 can write new data the ephemeral data buffer area of the network transmission module 19-3 of remote I/O control circuit 4 through Redundant Control network-bus 3; These data will make a channel status of the digital quantity output module 22 of remote I/O control circuit 4 change; The d. c. voltage signal of output is delivered to combustion drive compressor group monitoring unit 13 and actuator 14 through the isolation conversion treatment of isolator terminal board 5, thereby accomplishes the dead halt of unit.
Wherein the model and the manufacturer of this mode of execution middle part sub-unit are following:
Claims (4)
1. fire drive compressor group safety protector, it comprises main control circuit (1), network transfer bus (3), remote I/O control circuit (4) and isolator terminal board (5); The COM1 of main control circuit (1) is connected with a COM1 of remote I/O control circuit (4) through network transfer bus (3); The digital signal output end of isolator terminal board (5) connects the digital signal input end of remote I/O control circuit (4); The analog signal output of isolator terminal board (5) connects the input end of analog signal of remote I/O control circuit (4); It is characterized in that it also comprises redundancy control circuit (2), the COM1 of described redundancy control circuit (2) is connected with another COM1 of remote I/O control circuit (4) through network transfer bus (3).
2. combustion drive compressor group safety protector according to claim 1 is characterized in that described redundancy control circuit (2) comprises second source module (17-2), second processor module (18-2), the second control mixed-media network modules mixed-media (19-2) and the second redundant judging module (20-2);
Second source module (17-2) is used for supplying power to redundancy control circuit (2); Second processor module (18-2) is used for control and data operation; Second network transmission module (19-2) is as the COM1 of redundancy control circuit (2) with network transfer bus (3); Whether the second redundant judging module (20-2) is used for adopting the judgement of redundancy of effort pattern and synchronization of data to upgrade.
3. combustion drive compressor group safety protector according to claim 1 is characterized in that described main control circuit (1) comprises first power module (17-1), first processor module (18-1), first network transmission module (19-1) and the first redundant judging module (20-1);
First power module (17-1) is used for supplying power to main control circuit (1); First processor module (18-1) is used for control and data operation; First network transmission module (19-1) is as the COM1 of main control circuit (1) with network transfer bus (3); Whether the first redundant judging module (20-1) is used for adopting the judgement of redundancy of effort pattern and synchronization of data to upgrade.
4. combustion drive compressor group safety protector according to claim 1 is characterized in that described remote I/O control circuit (4) comprises the 3rd power module (17-3), the 3rd network transmission module (19-3), digital quantity input module (21), digital quantity output module (22) and analog amount load module (23);
The 3rd power module (17-3) is used for supplying power to remote I/O control circuit (4); The 3rd network transmission module (19-3) is as the COM1 of remote I/O control circuit (4) with network transfer bus (3); Digital quantity input module (21) is used to gather digital signal; Digital quantity output module (22) is used to send digital signal; Analog amount load module (23) is used to gather analogue signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104024092A CN102418690A (en) | 2011-12-07 | 2011-12-07 | Safety protector for fuel drive compressor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104024092A CN102418690A (en) | 2011-12-07 | 2011-12-07 | Safety protector for fuel drive compressor unit |
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| CN102418690A true CN102418690A (en) | 2012-04-18 |
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| CN2011104024092A Pending CN102418690A (en) | 2011-12-07 | 2011-12-07 | Safety protector for fuel drive compressor unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343748A (en) * | 2013-07-04 | 2013-10-09 | 连云港杰瑞网络有限公司 | Multi-stage centrifugal compressor constant pressure control device based on PLC |
| CN105673469A (en) * | 2016-02-04 | 2016-06-15 | 中车株洲电力机车有限公司 | Control method and system for reconnection train air compressor unit |
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| CN102128162A (en) * | 2010-08-23 | 2011-07-20 | 安徽省皖江质检科技有限公司 | Remote monitoring system and method of compressor |
| CN202056055U (en) * | 2011-01-20 | 2011-11-30 | 上海康可尔压缩机有限公司 | Intelligent microcomputer control system of screw compressor |
| CN202370807U (en) * | 2011-12-07 | 2012-08-08 | 中国船舶重工集团公司第七�三研究所 | Safe protector for combustion driving compressor set |
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2011
- 2011-12-07 CN CN2011104024092A patent/CN102418690A/en active Pending
Patent Citations (6)
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| CN201013597Y (en) * | 2007-03-30 | 2008-01-30 | 上海斯可络压缩机有限公司 | Oil free helical lobe compressor controller |
| CN101660529A (en) * | 2008-08-29 | 2010-03-03 | 上海斯可络压缩机有限公司 | On-line control method of screw compressor |
| CN201584787U (en) * | 2009-12-15 | 2010-09-15 | 辽宁省电力有限公司鞍山供电公司 | Double-control system SVC device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103343748A (en) * | 2013-07-04 | 2013-10-09 | 连云港杰瑞网络有限公司 | Multi-stage centrifugal compressor constant pressure control device based on PLC |
| CN105673469A (en) * | 2016-02-04 | 2016-06-15 | 中车株洲电力机车有限公司 | Control method and system for reconnection train air compressor unit |
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Application publication date: 20120418 |