CN105204453B - A kind of chain self-starting and interlocking design method of mutual backup pump - Google Patents
A kind of chain self-starting and interlocking design method of mutual backup pump Download PDFInfo
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- CN105204453B CN105204453B CN201510104981.9A CN201510104981A CN105204453B CN 105204453 B CN105204453 B CN 105204453B CN 201510104981 A CN201510104981 A CN 201510104981A CN 105204453 B CN105204453 B CN 105204453B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses the chain self-startings and interlocking design method of a kind of mutual backup pump, it utilizes in DCS system software function and gate logic, or gate logic, timer, pulse output, the logic functional blocks such as delay output, pass through the continuous characterization processes parameter of detection instrument and will test signal and send to DCS system, DCS carries out logical operation using logic functional block, when technological parameter exception, DCS is sent to motor MCC control centre by chain promoter and by logic operation result output with the control to electrical actuating station, realize the self-starting of stand-by pump and the stopping of work at present pump.Logic control method through the invention, be both able to achieve when work failure of pump when can enable stand-by pump immediately, and the case where be also avoided that two pumps while running, ensure that the safety and continuity of production.
Description
Technical field
The invention belongs to automatic control technology field more particularly to a kind of utilization DCS(Distributed Control
System, i.e. scattered control system) chain logic function realize mutual backup pump chain self-starting and interlocking design side
Method.
Background technique
In chemical plant installations, in order to guarantee being carried out continuously for production, device caused by avoiding as there is equipment fault stops
Vehicle phenomenon, frequently with the method for the design of the using and the reserved.And the design pumped is generally also to be arranged two, a job, one is standby
With.
In existing technology, the control of pump is usually manually controlled by operator, this control mode poor reliability, and
The workload of operator is increased, while if operation not in time, will affect going on smoothly for production.Meanwhile also there is operation
Work operation error brings detrimental effect to production and safety the case where causing two pumps while starting.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, chain the present invention provides a kind of mutual backup pump opens certainly
Dynamic and interlocking design method, the chain self-starting and interlocking of two stand-by pumps are realized using the method for the chain logic of DCS,
Both be able to achieve when work failure of pump when can enable stand-by pump immediately, and the case where be also avoided that two pumps while running, guarantee
The safety and continuity of production, while having saved human cost.
To achieve the goals above, the technical solution adopted by the present invention are as follows: a kind of chain self-starting of mutual backup pump and
Interlocking design method comprising the pump chain logic module of self-starting and pump interlock chain logic module, and the pump self-starting connects
Locking logic module includes one or gate logic module, a pulse output module, two timer modules and two and gate logic
Module, described two timer modules are respectively timer module TOFF_1 and timer module TOFF_2, described two and door
Logic module includes first and gate logic modules A ND_1 and second and gate logic modules A ND_2；The pump interlocks chain logic mould
Block includes other two and gate logic module, other two and the gate logic module include third and gate logic modules A ND_3
With the 4th and gate logic modules A ND_4；It is real in dcs that the chain logic of pump self-starting and the pump interlock chain logic
It is existing.
Preferred technical solution, described or gate logic module, pulse output module, timer module TOFF_1, timing
Device module TOFF_2, first and gate logic modules A ND_1, second and gate logic modules A ND_2, third and gate logic modules A ND_
3 and the 4th and gate logic modules A ND_4 includes respective input terminal and output end.
Further preferred technical solution, described or gate logic module, first input end be technological parameter numerical value with
Logic setting value compares output as a result, its second input terminal is the output end of pulse output module；Its output end is sent respectively to
The first input end of the third input terminal of one and gate logic modules A ND_1 and second and gate logic modules A ND_2.
Technical solution still more preferably, the pulse output module export letter after signal period t, t minutes
Number interrupt, t=0~60min is adjustable.
Two timer modules from ON jump be OFF when, generate delay and export, delay time t=0~60s
It is adjustable；The input terminal of described two timer modules is respectively the CRANK PULSES of A pump and the CRANK PULSES of B pump, output end difference
For the first input end of first and gate logic modules A ND_1 and the second input terminal of second and gate logic modules A ND_2.
Described first and gate logic modules A ND_1, first input end are the output end of timer module TOFF_1, the
Two inputs are the self-starting signal of A pump, and third input is or gate logic module arithmetic result；Described first with gate logic module
The output end of AND_1 is fed directly to electrical MCC (Motor Control Center) control cabinet to control the self-starting of B pump.
Described second and gate logic modules A ND_2, first input end is or gate logic module arithmetic is as a result, second is defeated
Enter the output end that end is timer module TOFF_2, third input terminal is the self-starting signal of B pump.Described second with gate logic mould
The output end of block AND_2 is fed directly to electrical MCC control cabinet to control the self-starting of A pump.
The third and gate logic modules A ND_3, first input end are the output end for stopping A switch pump on DCS manually,
Second input terminal is the output end that B pumps self-starting signal.The output end of the third and gate logic modules A ND_3 are fed directly to electricity
Gas MCC control cabinet come control A pump start-stop.
Described the 4th and gate logic modules A ND_4, first input end are the output end for stopping B switch pump on DCS manually,
Second input terminal is the output end that A pumps self-starting signal.The output end of described 4th and gate logic modules A ND_4 is fed directly to electricity
Gas MCC control cabinet come control B pump start-stop.
The DCS system can collect all signals transmitted, shown, handled and logical operation to signal,
And operation result is exported to corresponding executive component.
Using above technical scheme, a kind of chain self-starting of mutual backup pump of the present invention and having for interlocking design method
Beneficial effect are as follows: (1), drive initial stage be arranged by-pass switch, avoid as INITIAL PROCESSING parameter it is unstable caused by chain parking；
(2), the condition using the running signal of the logic functional block of DCS and pump as self-starting signal, realizes the automatic control of pump
Function processed, reduces human cost, has saved resource；(3), using self-starting signal as the condition of termination of pumping, interlocking has been reached
Purpose, for safety in production provide guarantee；(4), it is controlled using motor MCC and executes logic, to receive the output of DCS logical process
Based on signal, motor body electic protection demand is taken into account, realizes the control function of mutual backup pump, entire control process letter
Single clear, system stability height.
Detailed description of the invention
Fig. 1 is the chain self-starting and mutually that a kind of chain logic function using DCS of the invention realizes mutual backup pump
The chain logic chart of pump self-starting of the design method of lock；
Fig. 2 is the chain self-starting and mutually that a kind of chain logic function using DCS of the invention realizes mutual backup pump
The interlocking chain logic chart of the pump of the design method of lock；
Fig. 3 is the chain self-starting and mutually that a kind of chain logic function using DCS of the invention realizes mutual backup pump
The MCC motor control schematic diagram of the design method of lock.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, below with reference to specific example and referring to attached
Fig. 1 to Fig. 3 in figure, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and do not really want to limit
The scope of the present invention processed.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid unnecessarily
Obscure idea of the invention.
As shown in Figure 1, OS by-pass switch is arranged for driving initial stage, because technological parameter is unstable at the initial stage of driving
It is fixed, to avoid generating unnecessary interlocking action, a pulse output module PO is set, the time, t=60S was adjustable, in the t of setting
In time or signal that the second input terminal of gate logic module receives is always " 1 ", and such driving INITIAL PROCESSING abnormal parameters are just
Will not generate it is unnecessary it is chain have switched, after the t time or the received pulse output module PO of the second input terminal of gate logic module
Output signal is " 0 ", and chain-initiation comes into operation.
Technological parameter numerical value is connected to the output result after chain setting value comparison operation or gate logic module first is defeated
Enter end；By-pass switch signal is connected to after a pulse output module or the second input terminal of gate logic module；Or gate logic mould
The logic operation result of block is negated rear while being sent to the third input terminal of first and gate logic modules A ND_1 and second and gate logic
The first input end of modules A ND_2.First and gate logic module are connected to after the A pump timed device module TOFF_1 of CRANK PULSES
The first input end of AND_1；A pump self-starting signal is connected to the second input terminal of first Yu gate logic modules A ND_1；First with
The output result of gate logic modules A ND_1 send to electrical MCC the self-starting for controlling B pump.B pumps the timed device module of CRANK PULSES
The second input terminal of second Yu gate logic modules A ND_2 is connected to after TOFF_2；B pump self-starting signal is connected to second and patrols with door
Collect the third input terminal of modules A ND_2；The output result of second and gate logic modules A ND_2, which is sent to electrical MCC, controls A pump
Self-starting.
It is connected as shown in Fig. 2, stopping A switch pump and third on DCS manually with the first input end of gate logic modules A ND_3；B
Pump self-starting signal and third are connected with the second input terminal of gate logic modules A ND_3；Third is defeated with gate logic modules A ND_3's
Result send to electrical MCC the start-stop for controlling A pump out.Stop B switch pump and the 4th on DCS manually with gate logic modules A ND_4's
First input end is connected；A pump self-starting signal and the 4th is connected with the second input terminal of gate logic modules A ND_4；4th and door
The output result of logic module AND_4 send to electrical MCC the start-stop for controlling B pump.
As shown in figure 3, hardware switch is arranged in MCC, provide MCC and DCS two kinds of control modes, meanwhile, then A/B pump is set
Selection starting hardware capability sets DCS control for another pump while MCC starts a wherein pump on the spot on the spot, when
When fortune pump is stopped transport due to unusual service condition, DCS is by above-mentioned detection and logical process function, and output is executed instruction to MCC, to pump
Machine realizes that failure pump is long-range and stops transport, hot standby to pump the electrical control function of remotely starting shipment.In addition, being arranged again manually in MCC motor center
" DCS starting allows " command function, constrains so that DCS host computer forms effective, safe authorization control to MCC when opening machine.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, it is done without departing from thought and range of the invention any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change.
Claims (5)
1. a kind of chain self-starting and interlocking design method of mutual backup pump, which is characterized in that it includes that pump self-starting connects
Lock logic module and pump interlock chain logic module, the chain logic module of the pump self-starting including one or gate logic module,
One pulse output module, two timer modules and two and gate logic module, described two timer modules are respectively fixed
When device module TOFF_1 and timer module TOFF_2, described two with gate logic module includes first and gate logic modules A ND_
1 and second and gate logic modules A ND_2；It includes other two and gate logic module that the pump, which interlocks chain logic module, described
Other two includes third and gate logic modules A ND_3 and the 4th and gate logic modules A ND_4 with gate logic module；The pump is certainly
Start chain logic and the pump interlocks chain logic and realizes in dcs；
Described or gate logic module, pulse output module, timer module TOFF_1, timer module TOFF_2, first with
Gate logic modules A ND_1, second and gate logic modules A ND_2, third and gate logic modules A ND_3 and the 4th and gate logic module
AND_4 includes respective input terminal and output end；
Described or gate logic module, first input end be technological parameter numerical value exported compared with logic setting value as a result, its
Second input terminal is the output end of pulse output module；Its output end send the third to first and gate logic modules A ND_1 respectively
The first input end of input terminal and second and gate logic modules A ND_2；
Two timer modules from ON jump be OFF when, generate delay and export, delay time, t=0~60s could
It adjusts；The input terminal of described two timer modules is respectively the CRANK PULSES of A pump and the CRANK PULSES of B pump, and output end is respectively
Second input terminal of the first input end of first and gate logic modules A ND_1 and second and gate logic modules A ND_2；
Described first and gate logic modules A ND_1, first input end are the output end of timer module TOFF_1, and second is defeated
Enter for the self-starting signal of A pump, third input is or gate logic module arithmetic result；Described first and gate logic modules A ND_1
Output end be fed directly to electrical MCC control cabinet control B pump self-starting；
Described second and gate logic modules A ND_2, first input end is or gate logic module arithmetic is as a result, the second input terminal
For the output end of timer module TOFF_2, third input terminal is the self-starting signal of B pump, described second with gate logic module
The output end of AND_2 is fed directly to electrical MCC control cabinet to control the self-starting of A pump.
2. a kind of chain self-starting of mutual backup pump according to claim 1 and interlocking design method, feature exist
In the pulse output module, output signal is interrupted after signal period t, t minutes, and t=0~60min is adjustable.
3. a kind of chain self-starting of mutual backup pump according to claim 1 and interlocking design method, feature exist
In, the third and gate logic modules A ND_3, first input end is the output end for stopping A switch pump on DCS manually, second
Input terminal is the output end that B pumps self-starting signal, and the third and the output end of gate logic modules A ND_3 are fed directly to electrically
MCC control cabinet come control A pump start-stop.
4. a kind of chain self-starting of mutual backup pump according to claim 1 and interlocking design method, feature exist
In, the described the 4th with gate logic modules A ND_4, first input end is to stop the output end of B switch pump on DCS manually, second
Input terminal is the output end that A pumps self-starting signal, and the output end of the described 4th and gate logic modules A ND_4 is fed directly to electrically
MCC control cabinet come control B pump start-stop.
5. a kind of chain self-starting of mutual backup pump according to claim 1 and interlocking design method, feature exist
In the DCS system can collect all signals transmitted, shown, handled and logical operation to signal, and will fortune
Result is calculated to export to corresponding executive component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510104981.9A CN105204453B (en) | 2015-03-11 | 2015-03-11 | A kind of chain self-starting and interlocking design method of mutual backup pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510104981.9A CN105204453B (en) | 2015-03-11 | 2015-03-11 | A kind of chain self-starting and interlocking design method of mutual backup pump |
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| CN105204453A CN105204453A (en) | 2015-12-30 |
| CN105204453B true CN105204453B (en) | 2019-06-14 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575370A (en) * | 2017-10-13 | 2018-01-12 | 中石化宁波工程有限公司 | The more stand-by pump self-starting logic control circuits based on sequential control |
| CN112555138B (en) * | 2020-12-28 | 2022-11-22 | 黑龙江建龙钢铁有限公司 | Mutual backup interlocking program optimization method for thin oil pump of thin oil station of feed pump of power generation boiler |
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| CN2109466U (en) * | 1992-01-07 | 1992-07-08 | 王猛 | Automatic working device for spare pump |
| CN2194042Y (en) * | 1993-12-30 | 1995-04-05 | 林东山 | Multi-fucntional protector for water pump |
| US5812017A (en) * | 1994-12-05 | 1998-09-22 | Sgs-Thomson Microelectronics, S.R.L. | Charge pump voltage multiplier circuit |
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| CN105204453A (en) | 2015-12-30 |
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