CN108105076B - A kind of water pump control circuit and system of Nuclear Power Station Factory Building - Google Patents
A kind of water pump control circuit and system of Nuclear Power Station Factory Building Download PDFInfo
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- CN108105076B CN108105076B CN201711216190.0A CN201711216190A CN108105076B CN 108105076 B CN108105076 B CN 108105076B CN 201711216190 A CN201711216190 A CN 201711216190A CN 108105076 B CN108105076 B CN 108105076B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
Abstract
The present invention relates to a kind of water pump control circuit of Nuclear Power Station Factory Building and system, the control circuit include automatically turn on judging unit, be automatically stopped judging unit and respectively with automatically turn on judging unit, be automatically stopped the control unit that judging unit connect；Automatically turning on judging unit includes feedback module, the second unlatching judgment module, multiple first unlatching judgment modules and multiple first linkages, each first unlatching judgment module is correspondingly arranged with first linkage, each first linkage includes N number of first interlocking module；Feedback module and multiple first unlatching judgment modules are connect with the second unlatching judgment module；Being automatically stopped judging unit includes the second stopping judgment module, multiple first stopping judgment modules and multiple second linkages, each first stopping judgment module being correspondingly arranged with second linkage, each second linkage includes M the second interlocking modules.Logic control of the present invention is correct, automatic start-stop control is met the requirements.
Description
Technical field
The present invention relates to the technical fields of water pump, more specifically to a kind of water pump control circuit of Nuclear Power Station Factory Building
And system.
Background technique
Variable frequency pump can change the revolving speed of pump by changing frequency, its effect in water system is can be according to pipe network
The revolving speed of pressure automatic-adjusting pump keeps hydraulic pressure in pipe network to be maintained at 0.75Mpa or so.The working frequency of variable frequency pump is 0-
50Hz, for the lower-frequency limit set as 30Hz (pump is lower than 30Hz and does not contribute), the upper limit is 50Hz (as power frequency).Become in ductwork pressure
When dynamic, need to follow certain rule to start pump.By taking three living pump 401PO/402PO/403PO as an example, it is assumed that
401PO first starts and has reached upper frequency limit, needs to join when ductwork pressure is low and opens 402PO；Similarly, 402PO connection opens 403PO,
403PO connection opens 401PO.And the principle of first Qi Xianting is followed, two or three pump while running, frequency at the pump of frequency conversion state
When lower limit, stop the pump starting at first.
In existing logic control, due to start-up and shut-down control logical condition design mistake, cause the start and stop condition of pump chaotic
And it is unreasonable, so that can not normally be switched between variable frequency pump, it is unable to satisfy control and requires.
Secondly, in existing logic, it is not existing at the scene some conditioned signals often occur, is but written into logic control
In system, will lead to these logic controls in this way cannot achieve forever, so that logic is unable to operate normally, influence the use of pump.
Finally, need termination of pumping to protect pump under certain operating conditions, such as when pond liquid level is low, if pump exists
If such case continues to operation, it will it is pumped into air, generates cavitation erosion, it is badly damaged to pump generation, however, former design is almost
It is not involved with the logic that protection stops, this is very big to the harm of pump.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of Nuclear Power Station Factory Building
Water pump control circuit and system.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of water pump control electricity of Nuclear Power Station Factory Building
Road, including automatically turn on judging unit, be automatically stopped judging unit and control unit；
The automatic opening judging unit include feedback module, second unlatching judgment module, it is multiple first open judge mould
Block and multiple first linkages, wherein each described first opens that judgment module is corresponding with first linkage sets
It sets, each first linkage includes N number of first interlocking module；The feedback module and multiple first unlatching judgment modules are equal
It is connect with the second unlatching judgment module, and the feedback module and multiple first unlatching judgment modules pass through described second
Judgment module is opened to connect with described control unit；N is the integer greater than 1；
The judging unit that is automatically stopped includes second stopping judgment module, multiple first stopping judgment module and multiple the
Two linkages, wherein each described first stopping judgment module being correspondingly arranged with second linkage, each the
Two linkages include M the second interlocking modules；The multiple first stopping judgment module stopping judging mould with described second
Block connection, and connect by the second stopping judgment module with described control unit；M is the integer greater than 1；
Described second opens judgment module, and the feedback signal and described first for receiving the feedback module output is opened
The unlocking condition signal of module output, and signal is automatically turned on according to the feedback signal or unlocking condition signal output；
Described second stops judgment module, for receiving the described first stop condition signal for stopping judgment module output,
And signal is automatically stopped according to stop condition signal output；
Described control unit is connect with the second unlatching judgment module and the second stopping judgment module respectively, is respectively used to
Receive the automatic opening signal or it is described be automatically stopped signal, and opening control signal is exported according to the automatic opening signal
Control water pump is opened or the signal output stopping control signal control water pump that is automatically stopped stops.
It preferably, further include that the protection connecting with described control unit stops judging unit；
It includes that protection stops judgment module and connects with protection stopping judgment module that the protection, which stops judging unit,
The third linkage connect, the third linkage include X third interlocking module, the X third interlocking module with
The protection stops judgment module connection；X is the integer greater than 1；
The protection stops judgment module, the linkage signal exported for receiving the X third interlocking module, and according to
The linkage signal output protection stop signal is to described control unit；Described control unit is defeated according to the protection stop signal
Control stops control signal to control water pump stopping out.
Preferably, there are two the first unlatching judgment module is set, two the first unlatching judgment modules are and door,
The second unlatching judgment module is or door；
The input terminal of each the first unlatching judgment module is connect with first linkage, each institute
The output end for stating the first unlatching judgment module is connect with the input terminal of the second unlatching judgment module, and second unlatching is sentenced
The output end of disconnected module is connect with described control unit.
Preferably, first linkage includes the first ductwork pressure detection module, the first power frequency operation detection module
With the first converting operation detection module；
Two it is described first open judgment modules in one respectively with the first ductwork pressure detection module, the first work
Frequency operation detection module and the connection of the first converting operation detection module；Another respectively with the first ductwork pressure detection module
It is connected with the first converting operation detection module.
Preferably, there are three the first stopping judgment module being set, three the first stopping judgment modules are and door,
The second stopping judgment module is or door；
The input terminal of each the first stopping judgment module being connect with second linkage, each institute
The output end for stating the first stopping judgment module being connect with the input terminal of the second unlatching judgment module, and second unlatching is sentenced
The output end of disconnected module is connect with described control unit.
Preferably, second linkage include the first condition monitoring module, the second condition monitoring module,
Second power frequency operation detection module, the second ductwork pressure detection module, the second converting operation detection module and third converting operation
Detection module；
Three the first stopping judgment modules include third and door, the 4th with door and the 5th and door；
The input terminal of the third and door detects mould with the first condition monitoring module, the second power frequency operation respectively
Block, the second converting operation detection module and the connection of the second ductwork pressure detection module, the described 4th with the input terminal of door respectively with
The first power frequency operation detection module, the second power frequency operation detection module, the second ductwork pressure detection module and third frequency conversion
Run detection module connection, the described 5th with the input terminal of door respectively with the second power frequency operation detection module, the second pipe network
Pressure detecting module, third converting operation detection module and the connection of the second condition monitoring module；
The output end of the third and door, the 4th stop with described second with the output end of door and the 5th with the output end of door
The output end of the only input terminal connection of judgment module, the second stopping judgment module being connect with described control unit.
Preferably, it includes the 6th and door that the protection, which stops judgment module, and the third linkage includes the first water level
Detection module, the second water level detecting module and third water level detecting module,
Described 6th with the input terminal of door respectively with the first water level detecting module, the second water level detecting module and third
The connection of water level detecting module, the described 6th connect with the output end of door with described control unit.
It preferably, further include the 7th and door, the described 7th includes two input terminals with door；Described 7th is defeated with two of door
One entered in end connect with the output end of the second unlatching judgment module, another connect with trigger module, and the described 7th
It is connect with the output end of door with described control unit.
It preferably, further include the 8th and door, the described 8th includes two input terminals with door；
Described 8th connect with one in two input terminals of door with the output end of the second stopping judgment module, separately
One connect with trigger module, and the described 8th connect with the output end of door with described control unit.
The present invention also provides a kind of control system of water pump of Nuclear Power Station Factory Building, including master controller and core as described above
The water pump control circuit of Power Plant, the master controller are connect with described control unit, and carry out data communication.
The water pump control circuit for implementing Nuclear Power Station Factory Building of the invention has the advantages that logic control of the present invention
Correctly, automatic start-stop control is met the requirements, i.e., by realizing water pump control circuit of the invention, can solve existing variable frequency pump it
Between switching confusion problem or the problem of be unable to correct switch, keep the switching between variable frequency pump more reasonable, make multiple frequency conversions
The reasonable switch logic of circulation can be formed between water pump, avoided danger caused by logic control mistake, improved water pump
Safety, reliability and stability.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is a kind of structural schematic diagram of the water pump control circuit first embodiment of Nuclear Power Station Factory Building provided by the invention；
Fig. 2 is a kind of structural schematic diagram of the water pump control circuit second embodiment of Nuclear Power Station Factory Building provided by the invention；
Fig. 3 is a kind of logic control circuit of the water pump control circuit first embodiment of Nuclear Power Station Factory Building provided by the invention
Figure.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
Refering to fig. 1, Fig. 1 is a kind of structural schematic diagram of the water pump control circuit of Nuclear Power Station Factory Building provided by the invention.Such as
Shown in Fig. 1, the water pump control circuit of the Nuclear Power Station Factory Building of the present embodiment includes automatically turning on judging unit 10, being automatically stopped judgement
Unit 20 and control unit 30.
Automatically turning on judging unit 10 includes that feedback module 102, second opens judgment module 104, multiple first unlatchings are sentenced
Disconnected module 103 and multiple first linkages 101, wherein each first unlatching judgment module 103 and one first linkage fill
It sets 101 to be correspondingly arranged, each first linkage 101 includes N number of first interlocking module；Feedback module 102 and multiple first
It opens judgment module 103 to connect with the second unlatching judgment module 104, and feedback module 102 and multiple first unlatchings judge mould
Block 103 is connect by the second unlatching judgment module 104 with control unit 30；N is the integer greater than 1.
It is to be appreciated that in the present embodiment, each first interlocking module mainly for detection of and acquisition water pump fortune
Row state, operating parameter or fault condition etc., and output detects signal to the first unlatching connected to it according to testing result
Judgment module 103, by first open judgment module 103 according to received all first interlocking modules detection signal, into
Row judgement and corresponding calculation process export corresponding unlocking condition signal according to calculation process result.
Optionally, in the present embodiment, N number of first interlocking module in the first linkage 101, i.e. the first interlocking module #
1, the first interlocking module #2, the first interlocking module #3 ..., the first interlocking module #N can be different interlocking modules, i.e., often
The information that one interlocking module is detected and acquired is different, wherein each first interlocking module can be by acquiring biography accordingly
Sensor and control module composition.For example, when some first interlocking module is used to detect water pump ductwork pressure situation, first
Dynamic model block then may include pressure sensor and pressure control module, by pressure sensor real-time detection and acquire the pressure of pipe network
Force data, and pressure data is transmitted to pressure control module, by pressure control module and pre-set compression force reference value into
Row compares, and exports detection signal to the first unlatching judgment module 103 according to comparison result.
Optionally, the present embodiment first open judgment module 103 can for door, NOT gate or door, NAND gate or
With or the logic gates such as door, wherein first open logic gate selected by judgment module 103 specifically can according to the type of water pump,
Logic control demand determines that the embodiment of the present invention is not especially limited.
Feedback module 102 can be fault monitor module, for the fault condition of real-time monitoring water pump, and according to monitoring
As a result feedback signal is exported to the second unlatching judgment module 104.
Second opens judgment module 104, and the feedback signal and the first opening module for receiving the output of feedback module 102 are defeated
Unlocking condition signal out, and based on the feedback signal or unlocking condition signal output automatically turn on signal.
Optionally, in the present embodiment, second open judgment module 104 can for door, NOT gate or door, NAND gate or
Person with or the logic gates such as door, wherein second opens logic gate selected by judgment module 104 specifically can be according to the class of water pump
Type, logic control demand determine that the embodiment of the present invention is not especially limited.
Being automatically stopped judging unit 20 includes second stopping judgment module 203, multiple first stopping judgment module 202 and more
A second linkage 201, wherein each first stopping judgment module 202 is correspondingly arranged with second linkage, often
One the second linkage 201 includes M the second interlocking modules；Multiple first stopping judgment modules 202 stop sentencing with second
Disconnected module 203 connects, and is connect by the second stopping judgment module 203 with control unit 30；M is the integer greater than 1.
It is to be appreciated that in the present embodiment, each second interlocking module mainly for detection of and acquisition water pump fortune
Row state, operating parameter or fault condition etc., and test result output detects signal to the first stopping connected to it
Judgment module 202, by first stop judgment module 202 according to received all second interlocking modules detection signal, into
Row judgement and corresponding calculation process export corresponding stop condition signal according to calculation process result.
Optionally, in the present embodiment, M the second interlocking modules, i.e. the second interlocking module # in the second linkage 201
1, the second interlocking module #2, the second interlocking module #3 ..., the second interlocking module #M can be different interlocking modules, it is each
The information that a interlocking module is detected and acquired is different, wherein each second interlocking module can be by acquiring sensing accordingly
Device and control module composition.For example, when some second interlocking module is used to detect the frequency conversion situation of water pump, the second interlocking module
It may include frequency monitor and control module composition, by the running frequency of frequency monitor real-time monitoring water pump, and will fortune
Line frequency data are transmitted to control module, and control module receives processing running frequency data, and is exported and detected according to processing result
Signal to first stop judgment module 202.
Optionally, the present embodiment first stop judgment module 202 can for door, NOT gate or door, NAND gate or
With or the logic gates such as door, wherein first stop logic gate selected by judgment module 202 specifically can according to the type of water pump,
Logic control demand determines that the embodiment of the present invention is not especially limited.
Second stops judgment module 203, the stop condition signal exported for receiving the first stopping judgment module 202, and
Signal is automatically stopped according to the output of stop condition signal.
Optionally, in the present embodiment, second open judgment module 104 can for door, NOT gate or door, NAND gate or
Person with or the logic gates such as door, wherein second opens logic gate selected by judgment module 104 specifically can be according to the class of water pump
Type, logic control demand determine that the embodiment of the present invention is not especially limited.
Control unit 30 is connect with the second unlatching judgment module 104 and the second stopping judgment module 203 respectively, is respectively used to
It receives automatic open signal or is automatically stopped signal, and opened according to signal output opening control signal control water pump is automatically turned on
It opens, or is automatically stopped signal output and stops control signal control water pump stopping.It is to be appreciated that in the present embodiment, it is each
A water pump configures a control unit 30, i.e. water pump one control unit 30 of corresponding configuration.
By the way that above-mentioned automatic opening judging unit 10 is arranged, is automatically stopped judging unit 20 and control unit 30, and lead to
The linkage control effect between them is crossed, the switching problem between variable frequency pump can be effectively solved, can make variable frequency pump can be with
So that water pump is realized correct start and stop switching using correct logic control, obtains reasonable start and stop condition, reached correct control
The purpose of variable frequency pump meets control and requires, improves safety, the reliability and stability of water pump.
Referring to Fig.2, Fig. 2 is a kind of structure of the water pump control circuit second embodiment of Nuclear Power Station Factory Building provided by the invention
Schematic diagram.The water pump control circuit of the Nuclear Power Station Factory Building of the present embodiment can also further wrap on the basis of first embodiment
It includes the protection connecting with control unit 30 and stops judging unit 40.
Protection stops judging unit 40 and is mainly used for carrying out logic judgment to pond liquid level situation, and according to logic judgment knot
Fruit output protection stop signal so that control unit 30 can be automatically stopped signal according to protection stop signal output, and then is controlled
Water pump processed is automatically stopped, so that control water pump stops when consumption service requirement is not achieved in pond liquid level, is avoided because water pump is in water
Continued to run when pit level is low and be pumped into air, generate cavitation erosion to pump generate it is badly damaged, achieved the purpose that protect water pump.
Optionally, in the present embodiment, protection stop judging unit 40 may include protection stop judgment module 402 and
Stop the third linkage 401 that judgment module is connect with protection, third linkage 401 includes X third interlocking module, X
A third interlocking module stops judgment module 402 with protection and connect；X is the integer greater than 1；
Protection stops judgment module 402, for receiving the linkage signal of X third interlocking module output, and according to linkage
Signal output protection stop signal is to control unit 30；Control unit 30 stops control letter according to protection stop signal output control
Number with control water pump stopping.
It should be noted that X third interlocking module can be made of corresponding sensor and monitoring modular, pass through
Sensor is measured in real time to test object and data acquisition, and needle detection data is sent to monitoring modular, and monitoring modular connects
Processing detection data are received, and detection signal to protection is exported according to processing result and stops judgment module 402.Further, X the
Three interlocking modules can be the same or different, and is mainly determined according to the object of the water pump of service and detection.
It is a kind of logic of the water pump control circuit first embodiment of Nuclear Power Station Factory Building provided by the invention refering to Fig. 3, Fig. 3
Electric operation control circuit figure.In this embodiment, there are two the first unlatching judgment module 103 is set, two first unlatching judgment modules 103 are equal
For with door, the second unlatching judgment module 104 is or door；
The input terminal of each the first unlatching judgment module 103 is connect with first linkage 101, each first
The output end for opening judgment module 103 is connect with the input terminal of the second unlatching judgment module 104, and second opens judgment module
104 output end is connect with control unit 30.
First linkage 101 is set there are three the first interlocking module, respectively includes the first ductwork pressure detection module, first
Power frequency operation detection module and the first converting operation detection module.
Two first one opened in judgment module 103 transport with the first ductwork pressure detection module, the first power frequency respectively
Row detection module and the connection of the first converting operation detection module；Another becomes with the first ductwork pressure detection module and first respectively
Frequency operation detection module connection.Specifically, as shown in figure 3, two first unlatching judgment modules 103 be respectively first with door A and
Second and door B.First sets with door A there are three input terminal, and three input terminals of first and door A are detected with the first ductwork pressure respectively
Module, the first power frequency operation detection module and the connection of the first converting operation detection module.
In a specific embodiment, 11 water pumps are shared in certain Nuclear Power Station Factory Building, wherein having 6 pumps is variable frequency pump, point
It Wei not tri- industrial water pumps of tri- living pumps of 401PO/402PO/403PO and 408PO/409PO/410PO.With three life water
For pump, it is assumed that 401PO first starts and has reached upper frequency limit, needs to join when ductwork pressure is low and opens 402PO, similarly, 402PO connection
403PO is opened, 403PO connection opens 401PO, and follows first to set out and stop principle, and two or three pump while running, at the pump of frequency conversion state
When lower-frequency limit, stop the pump starting at first.The control logic of 401PO, 402PO, 403PO, 408PO, 409PO and 410PO
Mode is identical, wherein 410PO is a small-sized variable-frequency pump, and the control requirement of 408PO, 409PO and 410PO tri- pumps is first to open
410PO is opened, when 410PO can not meet water requirements, starts 408P0 or 409PO.
The present embodiment is by taking the control of 401PO as an example.Specifically, in this embodiment, the first unlatching judgment module 103 is set
There are two, respectively first opens judgment module 104 with door A and second and door B, second as first or door, and feedback module 102 is
403PO fault monitor module.There are three first stopping judgment module 202 is set, respectively third and door C, the 4th with door D, the 5th
Stop judgment module 203 with door E, second as second or door；Protection stops judgment module 402 and uses and door (the i.e. the 6th and door F).
First linkage 101 includes three the first interlocking modules, respectively the first ductwork pressure detection module, power frequency fortune
Row detection module and the first converting operation detection module.
First ductwork pressure detection module is for detecting ductwork pressure, and the first power frequency operation detection module is for detecting
Whether 402PO is in power frequency operation, and the first converting operation detection module is for detecting whether 403PO is converting operation and is in frequency
The rate upper limit.
First sets with door A there are three input interface, detects respectively with the first ductwork pressure detection module, the first power frequency operation
Module, the connection of the first converting operation detection module, and an input interface of the output interface of first and door A and first or door connects
It connects.As shown in figure 3, when the first ductwork pressure detection module detection ductwork pressure is lower than lower limit set value (such as 0.75MPa)
And first power frequency operation detection module detection 402PO be in power frequency operation and the first converting operation detection module and detect 403PO and be
Converting operation and when being in upper frequency limit, first with door A output high level signal (" 1 "), i.e., first just export and open with door A at this time
Conditioned signal is opened, first or door receive first with after the conditioned signal of door A output, i.e., exportable automatic opening signal extremely controls
Unit 30, i.e., as the automatic opening receiving interface (AON) of control unit 30 in Fig. 3 receives first or door output high level signal
When (" 1 "), the output of control unit 30 automatically turns on signal control 401PO and opens.
Second sets with door B there are two input interface, examines respectively with the first ductwork pressure detection module and the first converting operation
Module connection is surveyed, and second connect with the output interface of door B with another input interface of first or door.As shown in figure 3, when the
One ductwork pressure detection module detects when ductwork pressure is lower than lower limit set value (such as 0.75MPa) and the first converting operation detects
Module detect 403PO be converting operation and be in upper frequency limit when, second with door B output high level signal (" 1 "), i.e., second with
Door B export unlocking condition signal to first or door, first or door receive second with after the conditioned signal of door B output, can be defeated
Automatic open signal is to control unit 30 out, i.e., as the automatic opening receiving interface (AON) of control unit 30 in Fig. 3 receives the
One or door output high level signal (" 1 ") when, control unit 30 output automatically turn on signal control 401PO open.
In addition, the feedback signal of feedback module 102 is directly transferred to another input terminal of first or door, work as feedback module
102 when detecting that 403PO is resultant fault, output high level signal (" 1 ") to first or door.In other words, first or door be equipped with
Three input terminals, one connect with first with the output end of door A, another connect with second with the output end of door B, the last one
Connect with feedback module 102, when any one input terminal of first or door receives high level, first or door it is exportable automatic
Open signal is to control unit 30.
It is to be appreciated that the automatic opening judging unit 10 in the present embodiment be by taking 401PO as an example, wherein 402PO,
The control logic of 403PO is identical as 401PO, and is the mode that opens of circulation connection, and therefore, if 402PO, then feedback module 102 is
401PO fault monitor module, the first ductwork pressure detection module are for detecting ductwork pressure, the first power frequency operation detection module use
In detection 403PO whether be power frequency operation, the first converting operation detection module for detecting whether 401PO is converting operation and place
In upper frequency limit.If feedback module 102 detects 401PO resultant fault, 402PO unlatching is controlled, if the first ductwork pressure
Lower than lower limit set value (0.75MPa) and 403PO is power frequency operation and 401PO is converting operation and is in upper frequency limit, then controls
402PO processed is opened, if the first ductwork pressure is lower than lower limit set value (0.75MPa) and 401PO is converting operation and is in
Upper frequency limit then controls 402PO unlatching.The rest may be inferred, and when for 403PO, the logic control automatically turned on is similar to the above,
Wherein the first ductwork pressure detection module, the first power frequency operation detection module, the first converting operation detection module and feedback mould
Block 102 is respectively used to detect the operating parameter of corresponding pump.
Third and door C, the 4th and door D and the 5th and door E be all provided with there are three input interface and an output interface.
Second linkage 201 includes six the second interlocking modules, respectively the first condition monitoring module, the second work
Frequency operation detection module, the second converting operation detection module, the second ductwork pressure detection module, third converting operation detection module
With the second condition monitoring module.
Three input terminals of third and door C respectively with the first condition monitoring module, the second power frequency operation detection module,
Second converting operation detection module and the connection of the second ductwork pressure detection module, the output end of third and door C and second or door
One input terminal connection.Three input terminals of 4th and door D are examined with the second power frequency operation detection module, the second ductwork pressure respectively
Survey module, third converting operation detection module and the connection of the first power frequency operation detection module, the output end and second of the 4th and door D
Or another input terminal connection of door.5th connect respectively with the second power frequency operation detection module with three input terminals of door E,
The connection of two ductwork pressure detection modules, the connection of third converting operation detection module are connected with the second condition monitoring module, the
Five connect with the output end of door E with the last one input terminal of second or door.
Equally, by taking 401PO as an example, the first condition monitoring module is for detecting whether 403PO is operating status, second
Power frequency operation detection module is for detecting whether 401PO is power frequency operation, the second converting operation detection module for detecting 402PO
Whether it is converting operation and is used to detect whether ductwork pressure is higher than the upper limit in upper frequency limit, the second ductwork pressure detection module
Setting value, third converting operation detection module are for detecting whether 403PO is converting operation and is in upper frequency limit, the second operation
Detection module is for detecting whether 402PO is operating status.
As shown in figure 3, when 403PO is not in operating status and 401PO is for power frequency operation and 402PO converting operation and in frequency
Rate lower limit and when ductwork pressure reaches upper limit set value, third and door C export high level signal, and 401PO, which reaches, is automatically stopped item
Part, second or door receive the high level signal of third and door C output and export and be automatically stopped signal to control unit 30, control
Unit 30, which receives this and is automatically stopped signal and exports stopping control signal control 401PO, to be stopped.Or when 401PO is power frequency operation
And ductwork pressure reaches upper limit set value and 402PO converting operation and in lower-frequency limit and when 402PO is power frequency operation, the 4th
With door D output end level signal, 401PO reaches automatic stop condition, and second or door receive the high level of third and door C output
Signal, which exports, is automatically stopped signal to control unit 30, and control unit 30 receives this and is automatically stopped signal and exports stopping control
Signal, which controls 401PO, to be stopped.Or when 401PO is power frequency operation and ductwork pressure reaches upper limit set value and 403PO frequency conversion is transported
It goes and is in lower-frequency limit and 402PO not in operating status, the 5th exports high level signal with door E, and 401PO reaches to stop automatically
Only condition, second or door receive the high level signal of third and door C output and export and be automatically stopped signal to control unit 30,
Control unit 30, which receives this and is automatically stopped signal and exports stopping control signal control 401PO, to be stopped.
It can be seen from the above, there are three the self-braking conditions of 401PO, respectively by third and door C, the 4th and door D and the 5th
Logic judgment is carried out with door E, when any one condition meets, three and door output high level signals corresponding with door, the
Two or door when receiving the high level signal of third and door C, the 4th and door D and any of the 5th and door E output, it can be defeated
Automatic stop signal stops control signal according to signal output is automatically stopped by control unit 30 to control unit 30 to control out
401PO stops.Similarly, the self-braking condition of 402PO, 403PO also there are three, control logic is identical as 401PO, wherein
Second interlocking module object detected is accordingly replaced according to different pumps.
Third linkage 401 includes three third interlocking modules, respectively the first water level detecting module, the inspection of the second water level
Survey module and third water level detecting module.6th sets with door F there are three input interface, respectively with the first water level detecting module, the
Two water level detecting modules are connected with third water level detecting module, and the 6th connect (as schemed with the output interface of door F with control unit 30
POF interface in 3).Wherein, the first water level detecting module is used to detect the water level of clear water reserviors 001BA, the second water level detecting module
For detecting the water level of clear water reserviors 002BA, third water level detecting module is used to detect the water level of clear water reserviors 003BA, works as clear water reserviors
001BA water level reaches water level lower threshold and clear water reserviors 002BA water level reaches water level lower threshold and clear water reserviors 003BA water level reaches
When to water level lower threshold, the 6th exports high level signal with door F, the POF interface of control unit 30 to high level letter
After number, i.e., output stopping control signal control 401PO stops, to play the purpose of protection 401PO, avoiding because of pond liquid level mistake
Low, water pump continues to run and is pumped into air, generation cavitation erosion causes water pump to be seriously damaged.
It should be noted that the condition that different pump protections stop is different, such as living pump, industrial water pump or disappear
Waterproof pump, the condition that respectively protection first stops is different, at this point, the quantity of the third interlocking module in third linkage 401
And type needs to be determined according to the pump serviced, and it is not limited to specific example cited by the present invention.
Further, the water pump control circuit of the Nuclear Power Station Factory Building of the present embodiment can also include the 7th with door G, the 7th with
Door G includes two input terminals；7th with one in two input terminals of door G with second open judgment module 104 (i.e. first or
Door) output end connection, another connect with trigger module, and the 7th connect with the output end of door G with control unit 30.Wherein,
Trigger module is for exporting RS trigger signal.
Further, the water pump control circuit of the Nuclear Power Station Factory Building of the present embodiment can also include the 8th with door H, the 8th with
Door H includes two input terminals；8th with one in two input terminals of door H with second stop judgment module 203 (i.e. second or
Door) output end connection, another connect with trigger module, and the 8th connect with the output end of door H with control unit 30.
It is above-mentioned by taking 401PO as an example, the living pump control circuit of Nuclear Power Station Factory Building of the invention passes through three startings of design
Condition and three stop conditions, solve the switching problem between variable frequency pump, make to form a circulation conjunction between multiple variable frequency pumps
The switching of reason ensure that the safe and highly efficient operation of variable frequency pump, improve the security performance of water pump.With 401PO, 402PO and
The circle logic switching of 403PO is illustrated, according to above-mentioned logic switch, it is assumed that 401PO is first opened, when ductwork pressure is lower than
When 0.75MPa, by above-mentioned logic control circuit, automatically controls 402PO and open；When 401PO and 402PO power frequency operation and pipe network
When pressure is lower than 0.75MPa, by above-mentioned logic control circuit, automatically controls 403PO and open.When three pumps while operation and locate
When lower-frequency limit, stop a pump；When two pumps run simultaneously and are in lower-frequency limit, stop a pump, and follow and first open elder generation
Stop principle, so as to preferably control the switching between water pump.
For another example for fire pump, protection stops the use of judgment module 402 or door (i.e. third or door), third linkage dress
It sets including two third interlocking modules, respectively clear water reserviors water level detecting module and JDT system (the fire detection system of nuclear power station
System) signal detection module.
Third or door are set there are two input interface, detect mould with clear water reserviors water level detecting module and JDT system signal respectively
The output interface of block connection, third or door is connect with control unit 30 (POF interface).By taking 405PO fire pump as an example, work as clear water
Pool water level detection module detection clear water pool water level receives JDT system lower than lower threshold or JDT system signal detection module
When detectable signal, third or door export high level signal and are sent to control unit 30, and control unit 30 receives the high level
Signal, which exports stopping control signal control water pump, to be stopped.
The water pump control circuit of Nuclear Power Station Factory Building of the invention redesigns the logic control of water pump, deletes not
Necessary logic control signal or logic control circuit increase unlatching using the switching requirement consumed in various situations as foundation
With the detection and Rule of judgment for stopping variable frequency pump, item by pump startup corresponding in various situations and is stopped with the logic that holding water
Part is combined, and new control circuit is formed, and then forms the reasonable pump control switching circuit of a circulation, while also increasing
The protection stopping control circuit of pump increases protection in the control circuit of each pump and stops control condition, and according to difference
Pump protection stop condition difference be designed, ensured the safety and availability of entire Nuclear Power Station Factory Building water system.
The present invention also provides a kind of control system of water pump of Nuclear Power Station Factory Building, including master controller and preceding Nuclear Power Plant
The water pump control circuit in room, master controller are connect with control unit 30, and carry out data communication.Specifically, master controller is main
For the control information that reception control unit 30 exports, and the control information exported to control unit 30 is handled, while right
The control information that control unit 30 exports carries out storage management, in order to which the information to water pump is inquired.By aforementioned, each
Water pump is correspondingly arranged a control unit 30, and therefore, each control unit 30 can be connect with master controller, in other words, main
Controller can receive the information for handling all water pumps.This programme can be convenient administrative staff to the real-time understanding of water pump and the palm
It holds, to make corresponding control management in time.
Above embodiments only technical concepts and features to illustrate the invention, its object is to allow person skilled in the art
Scholar can understand the contents of the present invention and implement accordingly, can not limit the scope of the invention.It is all to be wanted with right of the present invention
The equivalent changes and modifications that range is done are sought, should belong to the covering scope of the claims in the present invention.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
1. a kind of water pump control circuit of Nuclear Power Station Factory Building, which is characterized in that including automatically turning on judging unit, being automatically stopped and sentence
Disconnected unit and control unit；
The automatic opening judging unit include feedback module, second open judgment module, it is multiple first open judgment module and
Multiple first linkages, wherein each described first unlatching judgment module is correspondingly arranged with first linkage, often
One the first linkage includes N number of first interlocking module；The feedback module and multiple first opens judgment module and institute
The connection of the second unlatching judgment module is stated, and the feedback module and multiple first unlatching judgment modules pass through described second and open
Judgment module is connect with described control unit；N is the integer greater than 1；
There are two the first unlatching judgment module is set, two the first unlatching judgment modules are and door that described second opens
Opening judgment module is or door；
Input terminal of each the first unlatching judgment module is connect with first linkage, each described the
The output end of one unlatching judgment module is connect with the input terminal of the second unlatching judgment module, and second unlatching judges mould
The output end of block is connect with described control unit；
The judging unit that is automatically stopped includes the second stopping judgment module, multiple first stopping judgment modules and multiple second
Dynamic device, wherein each described first stopping judgment module being correspondingly arranged with second linkage, each second
Dynamic device includes M the second interlocking modules；The multiple first stops judgment module stopping judgment module company with described second
It connects, and is connect by the second stopping judgment module with described control unit；M is the integer greater than 1；
Described second opens judgment module, for receiving the feedback signal and first opening module of the feedback module output
The unlocking condition signal of output, and signal is automatically turned on according to the feedback signal or unlocking condition signal output；
Described second stops judgment module, for receiving the described first stop condition signal for stopping judgment module output, and root
Signal is automatically stopped according to stop condition signal output；
Described control unit is connect with the second unlatching judgment module and the second stopping judgment module respectively, is respectively used to receive
The automatic opening signal or it is described be automatically stopped signal, and opening control signal control is exported according to the automatic opening signal
Water pump is opened or the signal output stopping control signal control water pump that is automatically stopped stops.
2. the water pump control circuit of Nuclear Power Station Factory Building according to claim 1, which is characterized in that further include and the control
The protection of unit connection stops judging unit；
It includes that protection stops judgment module and connect with protection stopping judgment module that the protection, which stops judging unit,
Third linkage, the third linkage include X third interlocking module, the X third interlocking module with it is described
Protection stops judgment module connection；X is the integer greater than 1；
The protection stops judgment module, for receiving the linkage signal of the X third interlocking module output, and according to described
The signal output protection stop signal that links is to described control unit；Described control unit is exported according to the protection stop signal and is controlled
Stop controls signal only to control water pump stopping.
3. the water pump control circuit of Nuclear Power Station Factory Building according to claim 1, which is characterized in that first linkage
Including the first ductwork pressure detection module, the first power frequency operation detection module and the first converting operation detection module；
Two described first one opened in judgment module transport with the first ductwork pressure detection module, the first power frequency respectively
Row detection module and the connection of the first converting operation detection module；Another respectively with the first ductwork pressure detection module and
The connection of one converting operation detection module.
4. the water pump control circuit of Nuclear Power Station Factory Building according to claim 1, which is characterized in that described first stops judgement
There are three module is set, three the first stopping judgment modules are and door, and the second stopping judgment module is or door；
Input terminal of each the first stopping judgment module being connect with second linkage, each described the
The output end of one stopping judgment module being connect with the input terminal of the second stopping judgment module, and described second stops judging mould
The output end of block is connect with described control unit.
5. the water pump control circuit of Nuclear Power Station Factory Building according to claim 3, which is characterized in that second linkage
Including the first condition monitoring module, the second condition monitoring module, the second power frequency operation detection module, the second pipe network pressure
Power detection module, the second converting operation detection module and third converting operation detection module；
Three the first stopping judgment modules be respectively third and door, the 4th with door and the 5th and door；
The input terminal of the third and door respectively with the first condition monitoring module, the second power frequency operation detection module,
Second converting operation detection module and the connection of the second ductwork pressure detection module, the described 4th with the input terminal of door respectively with it is described
Second power frequency operation detection module, the second ductwork pressure detection module are connected with third converting operation detection module, and the described 5th
With the input terminal of door respectively with the second power frequency operation detection module, the second ductwork pressure detection module, third converting operation
Detection module and the connection of the second condition monitoring module；
The output end of the third and door, the 4th stop sentencing with the output end of door with the output end of door and the 5th with described second
The output end of the input terminal connection of disconnected module, the second stopping judgment module being connect with described control unit.
6. the water pump control circuit of Nuclear Power Station Factory Building according to claim 2, which is characterized in that the protection stops judgement
Module includes the 6th and door, and the third linkage includes the first water level detecting module, the second water level detecting module and third
Water level detecting module,
Described 6th with the input terminal of door respectively with the first water level detecting module, the second water level detecting module and third water level
Detection module connection, the described 6th connect with the output end of door with described control unit.
7. the water pump control circuit of Nuclear Power Station Factory Building according to claim 1, which is characterized in that it further include the 7th and door,
Described 7th includes two input terminals with door；Described 7th opens judgement with described second with one in two input terminals of door
The output end of module connects, another connect with trigger module, and the described 7th connect with the output end of door with described control unit.
8. the water pump control circuit of Nuclear Power Station Factory Building according to claim 1, which is characterized in that it further include the 8th and door,
Described 8th includes two input terminals with door；
Described 8th connect with one in two input terminals of door with the output end of the second stopping judgment module, another
It is connect with trigger module, the described 8th connect with the output end of door with described control unit.
9. a kind of control system of water pump of Nuclear Power Station Factory Building, which is characterized in that any including master controller and claim 1-8
The water pump control circuit of Nuclear Power Station Factory Building described in, the master controller are connect with described control unit, and it is logical to carry out data
News.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711216190.0A CN108105076B (en) | 2017-11-28 | 2017-11-28 | A kind of water pump control circuit and system of Nuclear Power Station Factory Building |
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| CN201711216190.0A CN108105076B (en) | 2017-11-28 | 2017-11-28 | A kind of water pump control circuit and system of Nuclear Power Station Factory Building |
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| CN113741564A (en) * | 2021-09-14 | 2021-12-03 | 国网四川省电力公司检修公司 | Liquid level monitoring control system of sewage collecting tank |
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| CN204646613U (en) * | 2015-05-13 | 2015-09-16 | 上海科洋科技股份有限公司 | A kind of self-starting of stand by pump and interlock system |
| CN106368971B (en) * | 2016-08-18 | 2018-10-19 | 常州博瑞电力自动化设备有限公司 | The autocontrol method of outer cold wind unit cooling capacity |
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