CN204646613U - A kind of self-starting of stand by pump and interlock system - Google Patents
A kind of self-starting of stand by pump and interlock system Download PDFInfo
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- CN204646613U CN204646613U CN201520306404.3U CN201520306404U CN204646613U CN 204646613 U CN204646613 U CN 204646613U CN 201520306404 U CN201520306404 U CN 201520306404U CN 204646613 U CN204646613 U CN 204646613U
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Abstract
The utility model discloses a kind of self-starting and interlock system of stand by pump, it utilizes exporting with gate logic or gate logic, timer, pulse, postponing logic functional block such as exporting in DCS system software function, testing signal is delivered to DCS system by measuring instrument continuous characterization processes parameter, DCS utilizes logic functional block to carry out logical operation, when process parameter is abnormal, DCS exports by chain promoter and by logic operation result and delivers to motor M CC control centre with the control to electric actuating station, realizes the self-starting of stand by pump and the stopping of work at present pump.By system of the present utility model, can realize enabling stand by pump immediately when working pump fault, and the situation that two pumps also can be avoided simultaneously to run, ensure that safety and the continuity of production.
Description
Technical field
The utility model belongs to automatic control technology field, particularly relates to one and utilizes DCS(Distributed Control System, i.e. decentralized control system) chain logical function realize self-starting and the interlock system of stand by pump.
Background technique
In chemical plant installations, in order to ensure carrying out continuously of production, avoid owing to there is the device parking phenomenon that equipment failure causes, the normal method adopting the design of the using and the reserved.And the design of pump is also arrange two usually, a job, one for subsequent use.
In existing technology, the control of pump is usually by operator's Non-follow control, and this control mode poor reliability, and add the workload of operator, if operation not in time, can affect carrying out smoothly of production simultaneously.Meanwhile, also there is operator's operate miss, cause the situation that two pumps starts simultaneously, all bring adverse influence to production and safety.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of self-starting and interlock system of stand by pump, it utilizes the method for the chain logic of DCS to achieve chain self-starting and the interlocking of two stand by pumps, can realize enabling stand by pump immediately when working pump fault, and also can avoid the situation that two pumps runs simultaneously, ensure that safety and the continuity of production, save human cost simultaneously.
To achieve these goals, the technical solution adopted in the utility model is: a kind of self-starting of stand by pump and interlock system, it comprises the chain logic module of pump self-starting and pump interlocks chain logic module, the chain logic module of described pump self-starting comprises one or gate logic module, a pulse output module, two timer module and two and gate logic module, described two timer module are respectively timer module TOFF_1 and timer module TOFF_2, described two comprise first and gate logic modules A ND_1 and second and gate logic modules A ND_2 with gate logic module, described pump interlocks chain logic module and comprises two other and gate logic module, described two other and gate logic module comprise the 3rd with gate logic modules A ND_3 and the 4th and gate logic modules A ND_4, the chain logic of described pump self-starting and described pump interlock chain logic and realize all in dcs.
Preferred technological scheme, described or gate logic module, pulse output module, timer module TOFF_1, timer module TOFF_2, first and gate logic modules A ND_1, second and gate logic modules A ND_2, the 3rd include respective input end and output terminal with gate logic modules A ND_3 and the 4th and gate logic modules A ND_4.
Preferred technological scheme further, described or gate logic module, its first input end is that process parameter numerical value compares Output rusults with logic setting value, and its second input end is the output terminal of pulse output module; Its output terminal deliver to respectively first with the 3rd input end of gate logic modules A ND_1 and second and the first input end of gate logic modules A ND_2.
Further preferred technological scheme, described pulse output module, its signal period is that after t, t minute, output signal is interrupted, and t=0 ~ 60min is adjustable.
When two described timer module are OFF from ON saltus step, produce a time delay and export, retard time, t=0 ~ 60s was adjustable; The input end of described two timer module is respectively the CRANK PULSES of A pump and the CRANK PULSES of B pump, output terminal be respectively first with the first input end of gate logic modules A ND_1 and second and second input end of gate logic modules A ND_2.
Described first with gate logic modules A ND_1, its first input end is the output terminal of timer module TOFF_1, the second self-starting signal being input as A pump, and the 3rd is input as or gate logic module arithmetic result; Described first directly delivers to electric MCC (Motor Control Center) control cabinet to the self-starting of control B pump with the output terminal of gate logic modules A ND_1.
Described second with gate logic modules A ND_2, its first input end is or gate logic module arithmetic result, and the second input end is the output terminal of timer module TOFF_2, and the 3rd input end is the self-starting signal of B pump.Described second directly delivers to electric MCC control cabinet to the self-starting of control A pump with the output terminal of gate logic modules A ND_2.
Described the 3rd with gate logic modules A ND_3, its first input end is output terminal DCS manually stopping A switch pump, and the second input end is the output terminal of B pump self-starting signal.Described 3rd directly delivers to electric MCC control cabinet to the start-stop of control A pump with the output terminal of gate logic modules A ND_3.
Described the 4th with gate logic modules A ND_4, its first input end is output terminal DCS manually stopping B switch pump, and the second input end is the output terminal of A pump self-starting signal.Described 4th directly delivers to electric MCC control cabinet to the start-stop of control B pump with the output terminal of gate logic modules A ND_4.
Described DCS system can collect all signals transmitted, and shows, processes and logical operation, and export operation result to corresponding executive component to signal.
Adopt above technological scheme, the self-starting of a kind of stand by pump of the utility model and the beneficial effect of interlock system are: (1), driving initial stage arrange by-pass switch, avoid the chain parking because INITIAL PROCESSING parameter instability causes; (2), adopt the logic functional block of DCS and the running signal of pump as the condition of self-starting signal, achieve the automatic control function of pump, decrease human cost, saved resource; (3), utilize self-starting signal as the condition of termination of pumping, reach the object of interlocking, for safety in production provides guarantee; (4), utilize motor M CC to control actuating logic, to accept based on DCS logical process output signal, take into account motor body electic protection demand, achieve the controlling functions of stand by pump each other, whole control procedure is simple and clear, the stability of a system is high.
Accompanying drawing explanation
Fig. 1 is the chain logic module structure schematic diagram of pump self-starting.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with instantiation, the utility model is further described.Should be appreciated that, these describe just exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
The chain logic module of pump self-starting as shown in Figure 1, OS by-pass switch was arranged for the driving initial stage, because at the driving initial stage, process parameter is unstable, for avoiding producing unnecessary interlocking action, a pulse output module PO is set, time, t=60S was adjustable, within the t time of setting, or the signal that gate logic module second input end receives is " 1 " always, such driving INITIAL PROCESSING abnormal parameters would not produce unnecessary chainly to have switched, after the t time, or the pulse output module PO that gate logic module second input end receives outputs signal as " 0 ", chain-initiation comes into operation.
Output rusults after process parameter numerical value and chain setting value comparison operation is connected to or gate logic module first input end; By-pass switch signal is connected to or the second input end of gate logic module after a pulse output module; Or deliver to after the logic operation result negate of gate logic module simultaneously first with the 3rd input end of gate logic modules A ND_1 and second and the first input end of gate logic modules A ND_2.A pump CRANK PULSES is connected to the first input end of first and gate logic modules A ND_1 after timer module TOFF_1; A pump self-starting signal is connected to second input end of first and gate logic modules A ND_1; First delivers to electric MCC to the self-starting of control B pump with the Output rusults of gate logic modules A ND_1.B pump CRANK PULSES is connected to second input end of second and gate logic modules A ND_2 after timer module TOFF_2; B pump self-starting signal is connected to the 3rd input end of second and gate logic modules A ND_2; Second delivers to electric MCC to the self-starting of control A pump with the Output rusults of gate logic modules A ND_2.
The working principle that pump interlocks chain logic module is: DCS manually stops A switch pump and be connected with the first input end of gate logic modules A ND_3 with the 3rd; B pump self-starting signal is connected with second input end of gate logic modules A ND_3 with the 3rd; 3rd delivers to electric MCC to the start-stop of control A pump with the Output rusults of gate logic modules A ND_3.DCS manually stops B switch pump to be connected with the first input end of gate logic modules A ND_4 with the 4th; A pump self-starting signal is connected with second input end of gate logic modules A ND_4 with the 4th; 4th delivers to electric MCC to the start-stop of control B pump with the Output rusults of gate logic modules A ND_4.
MCC Electric Machine Control schematic diagram is: MCC arranges hardware switch, MCC and DCS two kinds of control modes are provided, meanwhile, then the selection on the spot arranging A/B pump starts hardware capability, starts wherein while a pump on the spot at MCC, another pump is set to DCS control, when when transporting pump and stopping transport due to unusual service condition, DCS, by above-mentioned detection and logical process function, exports and performs instruction to MCC, the long-range stoppage in transit of fault pump is realized to pump machine, the long-range electrical control function of starting shipment of hot standby pump.Separately, MCC motor center arrange again manually open machine time " DCS starts permission " command function, to make DCS upper-position unit, the constraint of effective, safe authorization control is formed to MCC.
Should be understood that, above-mentioned embodiment of the present utility model only for exemplary illustration or explain principle of the present utility model, and is not formed restriction of the present utility model.Therefore, any amendment made when not departing from thought of the present utility model and scope, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.In addition, the utility model claims be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and amendment.
Claims (10)
1. the self-starting of a stand by pump and interlock system, it is characterized in that, it comprises the chain logic module of pump self-starting and pump interlocks chain logic module, the chain logic module of described pump self-starting comprises one or gate logic module, a pulse output module, two timer module and two and gate logic module, described two timer module are respectively timer module TOFF_1 and timer module TOFF_2, and described two comprise first and gate logic modules A ND_1 and second and gate logic modules A ND_2 with gate logic module; Described pump interlocks chain logic module and comprises two other and gate logic module, described two other and gate logic module comprise the 3rd with gate logic modules A ND_3 and the 4th and gate logic modules A ND_4; The chain logic of described pump self-starting and described pump interlock chain logic and realize all in dcs.
2. the self-starting of a kind of stand by pump according to claim 1 and interlock system, it is characterized in that, described or gate logic module, pulse output module, timer module TOFF_1, timer module TOFF_2, first and gate logic modules A ND_1, second and gate logic modules A ND_2, the 3rd include respective input end and output terminal with gate logic modules A ND_3 and the 4th and gate logic modules A ND_4.
3. the self-starting of a kind of stand by pump according to claim 1 and interlock system, it is characterized in that, described or gate logic module, its first input end is that process parameter numerical value compares Output rusults with logic setting value, and its second input end is the output terminal of pulse output module; Its output terminal deliver to respectively first with the 3rd input end of gate logic modules A ND_1 and second and the first input end of gate logic modules A ND_2.
4. the self-starting of a kind of stand by pump according to claim 2 and interlock system, is characterized in that, described pulse output module, and its signal period is that after t, t minute, output signal is interrupted, and t=0 ~ 60min is adjustable.
5. the self-starting of a kind of stand by pump according to claim 3 and interlock system, is characterized in that, when two described timer module are OFF from ON saltus step, produce a time delay and export, retard time, t=0 ~ 60s was adjustable; The input end of described two timer module is respectively the CRANK PULSES of A pump and the CRANK PULSES of B pump, output terminal be respectively first with the first input end of gate logic modules A ND_1 and second and second input end of gate logic modules A ND_2.
6. the self-starting of a kind of stand by pump according to claim 4 and interlock system, it is characterized in that, described first with gate logic modules A ND_1, its first input end is the output terminal of timer module TOFF_1, the second self-starting signal being input as A pump, the 3rd is input as or gate logic module arithmetic result; Described first directly delivers to electric MCC control cabinet to the self-starting of control B pump with the output terminal of gate logic modules A ND_1.
7. the self-starting of a kind of stand by pump according to claim 5 and interlock system, it is characterized in that, described second with gate logic modules A ND_2, its first input end is or gate logic module arithmetic result, second input end is the output terminal of timer module TOFF_2, and the 3rd input end is the self-starting signal of B pump; Described second directly delivers to electric MCC control cabinet to the self-starting of control A pump with the output terminal of gate logic modules A ND_2.
8. the self-starting of a kind of stand by pump according to claim 6 and interlock system, it is characterized in that, described the 3rd with gate logic modules A ND_3, its first input end is output terminal DCS manually stopping A switch pump, and the second input end is the output terminal of B pump self-starting signal; Described 3rd directly delivers to electric MCC control cabinet to the start-stop of control A pump with the output terminal of gate logic modules A ND_3.
9. the self-starting of a kind of stand by pump according to claim 7 and interlock system, it is characterized in that, described the 4th with gate logic modules A ND_4, its first input end is output terminal DCS manually stopping B switch pump, and the second input end is the output terminal of A pump self-starting signal; Described 4th directly delivers to electric MCC control cabinet to the start-stop of control B pump with the output terminal of gate logic modules A ND_4.
10. the self-starting of a kind of stand by pump according to claim 8 and interlock system, it is characterized in that, described DCS system can collect all signals transmitted, and shows, processes and logical operation, and export operation result to corresponding executive component to signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520306404.3U CN204646613U (en) | 2015-05-13 | 2015-05-13 | A kind of self-starting of stand by pump and interlock system |
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| CN201520306404.3U CN204646613U (en) | 2015-05-13 | 2015-05-13 | A kind of self-starting of stand by pump and interlock system |
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| CN204646613U true CN204646613U (en) | 2015-09-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204453A (en) * | 2015-03-11 | 2015-12-30 | 上海科洋科技股份有限公司 | Mutually standby pump chain self-starting and interlocking design method |
| CN108105076A (en) * | 2017-11-28 | 2018-06-01 | 广西防城港核电有限公司 | The water pump control circuit and system of a kind of Nuclear Power Station Factory Building |
| CN110725366A (en) * | 2019-10-08 | 2020-01-24 | 彩虹（合肥）液晶玻璃有限公司 | Multi-pump water supply control system, method and device |
-
2015
- 2015-05-13 CN CN201520306404.3U patent/CN204646613U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204453A (en) * | 2015-03-11 | 2015-12-30 | 上海科洋科技股份有限公司 | Mutually standby pump chain self-starting and interlocking design method |
| CN105204453B (en) * | 2015-03-11 | 2019-06-14 | 上海科洋科技股份有限公司 | A kind of chain self-starting and interlocking design method of mutual backup pump |
| CN108105076A (en) * | 2017-11-28 | 2018-06-01 | 广西防城港核电有限公司 | The water pump control circuit and system of a kind of Nuclear Power Station Factory Building |
| CN110725366A (en) * | 2019-10-08 | 2020-01-24 | 彩虹（合肥）液晶玻璃有限公司 | Multi-pump water supply control system, method and device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: Jinshan District Fengjing town 201501 Shanghai Xinghao Road No. 7 Patentee after: SHANGHAI KEYONTECHS CO., LTD. Address before: Jinshan District Fengjing town Shanghai City No. 109 201501 Cao Lilu Building 1 room 101 Patentee before: SHANGHAI KEYONTECHS CO., LTD. |
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| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20200513 |
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| CF01 | Termination of patent right due to non-payment of annual fee |