CN102117669A - Method and system for controlling seawater reservoir water level pump trip of nuclear power plant - Google Patents
Method and system for controlling seawater reservoir water level pump trip of nuclear power plant Download PDFInfo
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- CN102117669A CN102117669A CN2010105291753A CN201010529175A CN102117669A CN 102117669 A CN102117669 A CN 102117669A CN 2010105291753 A CN2010105291753 A CN 2010105291753A CN 201010529175 A CN201010529175 A CN 201010529175A CN 102117669 A CN102117669 A CN 102117669A
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Abstract
The invention relates to a method for controlling the seawater reservoir water level pump trip of a nuclear power plant. The method comprises the following steps of: receiving a seawater reservoir pump trip signal; closing a circulating water system (CRF) pump and/or an auxiliary cooling water system (SEN) pump by using a TXS system through a safety-level trip coil loop of an electric switchboard according to the pump trip signal; closing the CRF pump and/or the SEN pump by using a safety-level logic circuit of a T2000 system through the safety-level trip coil loop of the electric switchboard; and closing the CRF pump and/or the SEN pump by using a non-safety-level logic circuit of the T2000 system through a non-safety-level control loop of the electric switchboard. The invention also relates to a system for controlling the seawater reservoir water level pump trip of the nuclear power plant. In the invention, the safety level of a seawater reservoir pump trip function can be defined as a nuclear safety-related FIB level, and the pump trip function is simultaneously realized in the TXS and the T2000. The safety level of equipment is reduced on the premise of guaranteeing reliable tripping, and the influence on the design of an entire balance of plant (BOP) part and equipment purchasing is reduced.
Description
Technical field
The present invention relates to the nuclear power technology field, more particularly, relate to control method and system that a kind of nuclear power station seawater reservoir level is jumped pump.
Background technology
As shown in Figure 1, (European advanced pressurized water reactor nuclear power plant: European pressurized water reactor) project is provided with a seawater storehouse at four identical runner recirculated water intake front ends to EPR, and has designed four seawater reservoir level measuring-signals.The plunge into the commercial sea water of reservoir of normal condition filters per two row in back through CFI (recirculated water filtering system) and is pooled to a female pipe, water intaking is managed from mother simultaneously by three systems of corresponding CRF (circulation)/SEN (auxiliary cooling water system)/SEC (nuclear island meet an urgent need unboiled water system), wherein non-safe level CRF of system and SEN system are main chilled water water systems, account for 95% of total water amount.In that taking place, extreme case such as typhoon earthquake cause the obstruction of caving in of seawater storehouse water intake conduit, perhaps extreme astronomical morning and evening tides weather causes the too low seawater reservoir level of intake water level not enough, this moment, cooling water inflow can not satisfy the normal water of productive use in power station, each seawater reservoir level measuring-signal all can produce different restriction signals according to different water level values in this case, totally three grades of restriction signals, the restriction signal of every group of same levels by 4 of 4 groups of inductors get feed back to DCS (Digitizing And Control Unit) after 2 logics thus produce triple jump pump signal, respectively with the CRF of the correspondence in downstream and the tripping operation of SEN pump to guarantee the supply of the system cools water that SEC system nuclear safety is relevant.
The classification of nuclear power station functional safety is divided into three grades, and the first order i.e. superlative degree is F1A level (nuclear safe level), and the second level is F1B level (with the nuclear safety correlation level), and the third level is that lowermost level is NC level (with the irrelevant level of nuclear safety).Must guarantee that under extreme case the CRF/SEN pump can realize reliable tripping operation to guarantee the requirement of SEC water, this function is relevant with nuclear safety, is the F1A level with its security leveldefinition at first.
If the seawater reservoir level is defined as the F1A level, so level of securitys such as Xiang Guan equipment, cable, crane span structure, rack all need to match, all be necessary for the F1A rank, but the seawater reservoir level is as the part of BOP (power plant's backup system), after security leveldefinition is F1A, to the design of whole BOP part and to be equipped with the buying influence bigger.
Summary of the invention
The technical problem to be solved in the present invention is, above-mentioned in order to guarantee that the seawater reservoir level jumps the reliability of pump the seawater reservoir level is defined as the F1A level at prior art caused the Nuclear Power Station defect of high cost.Provide a kind of and pumping function can be jumped in the seawater storehouse and be defined as the F1B level, but realize that at the non-safe level logical circuit of the safe level logical circuit of TXS (highest point reason level of security is the power station control system of F1A), T2000 (highest point reason level of security is the power station control system of F1B) and T2000 the nuclear power station seawater reservoir level of termination of pumping jumps the control method and the control system of pump simultaneously.Under the prerequisite of guaranteeing reliable tripping operation, reduced the level of security of equipment, reduced the design of whole BOP part and the influence of buying fully.
The technical solution adopted for the present invention to solve the technical problems is: construct the control method that a kind of nuclear power station seawater reservoir level is jumped pump, wherein, comprise step: the pump signal is jumped in S1, reception seawater storehouse; S2, according to described jumping pump signal, the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish; The safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish.
Jump in the control method of pump at nuclear power station seawater reservoir level of the present invention, described step S2 comprises that also according to described jumping pump signal, the non-safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the control loop of the non-safe level of electric switch dish.
Jump in the control method of pump at nuclear power station seawater reservoir level of the present invention, described step S2 is that the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish according to described jumping pump signal; The signal of the signal of the safe level logical circuit of T2000 system and other safe level jumping pumping system is got or is handled the back and closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish simultaneously; The signal of the conventional start stop system of the signal of the non-safe level logical circuit of T2000 system and equipment is got or is handled the back and closes corresponding C RF pump and/or SEN pump by the control loop of the non-safe level of electric switch dish simultaneously.
Jump in the control method of pump at nuclear power station seawater reservoir level of the present invention, comprise that step: S0, described jumping pump signal are divided at least two grades according to the water level in seawater storehouse before the step S1, the jumping pump signal of each grade is used to close corresponding C RF pump and/or SEN pump, surveys the water level in described seawater storehouse by level sensor.
Jump in the control method of pump at nuclear power station seawater reservoir level of the present invention, to be described jumping pump signal be divided into Three Estate according to the water level in seawater storehouse to described step S0, the jumping pump signal of the first estate is used for the CRF pump of closed portion, the jumping pump signal of second grade is used for closeall CRF pump, the jumping pump signal of the tertiary gradient is used for closeall CRF pump and SEN pump, surveys the water level in described seawater storehouse by level sensor; Each water level of jumping the described seawater storehouse of pump signal correspondence is provided with four level sensors, gets two logical circuits by four the signal of described level sensor is converted into corresponding jumping pump signal.
The present invention also constructs the control system that a kind of nuclear power station seawater reservoir level is jumped pump, comprising: signal receiving module: be used to receive the seawater storehouse and jump the pump signal; First jumps pump module: be used for according to described jumping pump signal, the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish; And second jump pump module: be used for according to described jumping pump signal, the safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish.
Jump in the control system of pump at nuclear power station seawater reservoir level of the present invention, the control system that described nuclear power station seawater reservoir level is jumped pump also comprises: the 3rd jumps pump module: be used for according to described jumping pump signal, the non-safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the control loop of the non-safe level of electric switch dish.
Jump in the control system of pump at nuclear power station seawater reservoir level of the present invention, described second jumps pump module comprises: first logical block: be used for the signal of the safe level logical circuit of T2000 system and the signal that other safe level are jumped pumping systems are got or handled; And first jump the pump unit: be used for according to the getting or result of described first logical block, corresponding C RF pump and/or SEN pump are closed in the breaking coil loop of the second tunnel safe level by the electric switch dish; The described the 3rd jumps pump module comprises: second logical block: be used for the signal of the non-safe level logical circuit of T2000 system and the signal of the conventional start stop system of equipment are got or handled; And second jump the pump unit: be used for according to the getting or result of described second logical block, the control loop of the non-safe level by the electric switch dish is closed corresponding C RF pump and/or SEN pump.
Jump in the control system of pump at nuclear power station seawater reservoir level of the present invention, the control system that described nuclear power station seawater reservoir level is jumped pump also comprises: the signal sets module: be used for described jumping pump signal and be divided at least two grades according to the water level in seawater storehouse, the jumping pump signal of each grade is used to close corresponding C RF pump and/or SEN pump, surveys the water level in described seawater storehouse by level sensor.
Jump in the control system of pump at nuclear power station seawater reservoir level of the present invention, described signal sets module is used for described jumping pump signal and is divided into Three Estate according to the water level in seawater storehouse, the jumping pump signal of the first estate is used for the CRF pump of closed portion, the jumping pump signal of second grade is used for closeall CRF pump, the jumping pump signal of the tertiary gradient is used for closeall CRF pump and SEN pump, surveys the water level in described seawater storehouse by level sensor; Each water level of jumping the described seawater storehouse of pump signal correspondence is provided with four level sensors; The control system that described nuclear power station seawater reservoir level is jumped pump also comprises: the signal conversion module: be used for getting two logical circuits by four the signal of described level sensor is converted into corresponding jumping pump signal.
Implement nuclear power station seawater reservoir level of the present invention and jump the control method and the control system of pump, have following beneficial effect: the pumping function security leveldefinition can be jumped in the seawater storehouse is the F1B level, but realizes jumping pumping function simultaneously in TXS and T2000.Under the prerequisite of guaranteeing reliable tripping operation, reduced the level of security of equipment, reduced the design of whole BOP part and the influence of buying fully.
The safe level signal is all sent in the non-safe level logical circuit simultaneously, realizes termination of pumping with conventional start stop system; Dispose trip(ping) circuit and a conventional control loop of two safe level like this, any one trip signal effectively can both be realized the reliable tripping operation of pump in three trip signals.The signal that signal and other safe level of T2000 system are jumped pumping system is got or handled and the signal of non-safe level logical circuit and the signal of the conventional start stop system of equipment are got or handled, and employing is got or logic has reduced the circuit of jumping the pump part.Carry out grade classification to jumping the pump signal, guarantee under the situation that satisfies SEC security level system water, can take into account to greatest extent simultaneously the economic availability requirement of power plant.Level sensor and four is got being provided with of two logical circuits and has effectively been avoided because of level sensor fault, broken string and gather falseness that aspect factor such as fastener fault brings or the malfunction that the interference of disablement signal causes and the generation of tripping situation.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the general flow chart of recirculated cooling water in the nuclear power station seawater storehouse of prior art;
Fig. 2 is the process flow diagram of first preferred embodiment of the nuclear power station seawater reservoir level of the present invention control method of jumping pump;
Fig. 3 is the process flow diagram of second preferred embodiment of the nuclear power station seawater reservoir level of the present invention control method of jumping pump;
Fig. 4 is the process flow diagram of the 3rd preferred embodiment of the nuclear power station seawater reservoir level of the present invention control method of jumping pump;
Fig. 5 is the process flow diagram of the 4th preferred embodiment of the nuclear power station seawater reservoir level of the present invention control method of jumping pump;
Fig. 6 is the process flow diagram of the 5th preferred embodiment of the nuclear power station seawater reservoir level of the present invention control method of jumping pump;
Fig. 7 is the structural representation of first preferred embodiment of the nuclear power station seawater reservoir level of the present invention control system of jumping pump;
Fig. 8 is the structural representation of second preferred embodiment of the nuclear power station seawater reservoir level of the present invention control system of jumping pump;
Fig. 9 is the structural representation of the 3rd preferred embodiment of the nuclear power station seawater reservoir level of the present invention control system of jumping pump;
Figure 10 is the structural representation of the 4th preferred embodiment of the nuclear power station seawater reservoir level of the present invention control system of jumping pump;
Figure 11 is the structural representation of the 5th preferred embodiment of the nuclear power station seawater reservoir level of the present invention control system of jumping pump;
Figure 12 is the principle sketch that the pump signal is jumped in the generation of the preferred embodiment of the nuclear power station seawater reservoir level of the present invention control system of jumping pump;
Figure 13 is the scheme sketch of jumping pump signal of the preferred embodiment of the nuclear power station seawater reservoir level of the present invention control system of jumping pump.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the process flow diagram of first preferred embodiment of the control method of nuclear power station seawater reservoir level jumping pump of the present invention as shown in Figure 2, the control method that described nuclear power station seawater reservoir level is jumped pump starts from step 200, subsequently, to next step 201, receive the seawater storehouse and jump the pump signal; Subsequently, to next step 202, according to described jumping pump signal, the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish; The safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish; This method ends at step 203 at last.When using this nuclear power station seawater reservoir level to jump the control method of pump, as the TXS system since fault can't be by the electric switch dish the breaking coil loop of first via safe level close corresponding C RF pump and/or SEN pump, the safe level logical circuit of T2000 system also can be closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish according to jumping the pump signal, and vice versa.Because the safe class of the jumping pumping function of the safe level logical circuit of TXS system and T2000 system is the F1B level, under the prerequisite of guaranteeing reliable tripping operation, reduced the level of security of the jumping pumping unit of TXS system, reduced the design of whole BOP part and the influence of buying fully.
In the process flow diagram of second preferred embodiment of the control method of nuclear power station seawater reservoir level jumping pump of the present invention as shown in Figure 3, the control method that described nuclear power station seawater reservoir level is jumped pump starts from step 300, subsequently, to next step 301, receive the seawater storehouse and jump the pump signal; Subsequently, to next step 302, according to jumping the pump signal, the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish; The safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish; The non-safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the control loop of the non-safe level of electric switch dish; This method ends at step 303 at last.Make whole jumping pump control system have trip(ping) circuit and a conventional control loop of two safe level by the jumping pumping unit that disposes non-safe level logical circuit, any one trip signal effectively can both be realized the reliable tripping operation of pump in three trip signals, has improved the reliability that nuclear power station seawater reservoir level is jumped the control method of pump greatly.
In the process flow diagram of the 3rd preferred embodiment of the control method of nuclear power station seawater reservoir level jumping pump of the present invention as shown in Figure 4, the control method that described nuclear power station seawater reservoir level is jumped pump starts from step 400, subsequently, to next step 401, receive the seawater storehouse and jump the pump signal; Subsequently, to next step 402, according to described jumping pump signal, the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish; The signal that signal and other safe level of the safe level logical circuit of T2000 system are jumped pumping systems is got or is handled the back and closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish; The back is got or handled to the signal of the signal of the non-safe level logical circuit of T2000 system and the conventional start stop system of equipment close corresponding C RF pump and/or SEN pump by the control loop of the non-safe level of electric switch dish; This method ends at step 403 at last.The signal that signal and other safe level of the safe level logical circuit of T2000 system are jumped pumping systems is got or is handled and the signal of the non-safe level logical circuit of T2000 system and the signal of the conventional start stop system of equipment are got or handled, employing is got or logic has reduced the circuit of jumping the pump part, has saved the cost of wiring.
In the process flow diagram of the 4th preferred embodiment of the control method of nuclear power station seawater reservoir level jumping pump of the present invention as shown in Figure 5, the control method that described nuclear power station seawater reservoir level is jumped pump starts from step 500, subsequently, to next step 501, described jumping pump signal is divided at least two grades according to the water level in seawater storehouse, the jumping pump signal of each grade is used to close corresponding C RF pump and/or SEN pump, surveys the water level in described seawater storehouse by level sensor; Subsequently, to next step 502, receive the seawater storehouse and jump the pump signal; Subsequently, to next step 503, according to described jumping pump signal, the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish; The safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish; This method ends at step 504 at last.Carry out grade classification to jumping the pump signal, make and when different water level, close the corresponding corresponding water pump of closing, guarantee can take into account to greatest extent simultaneously under the situation that satisfies SEC security level system water the economic availability requirement of power plant, water level can detect by at least one level sensor or other level detecting devices.
In the process flow diagram of the 5th preferred embodiment of the control method of nuclear power station seawater reservoir level jumping pump of the present invention as shown in Figure 6, the control method that described nuclear power station seawater reservoir level is jumped pump starts from step 600, subsequently, to next step 601, described jumping pump signal is divided into Three Estate according to the water level in seawater storehouse, the jumping pump signal of the first estate is used for the CRF pump of closed portion, the jumping pump signal of second grade is used for closeall CRF pump, the jumping pump signal of the tertiary gradient is used for closeall CRF pump and SEN pump, surveys the water level in described seawater storehouse by level sensor; Each water level of jumping the described seawater storehouse of pump signal correspondence is provided with four level sensors, gets two logical circuits by four the signal of described level sensor is converted into corresponding jumping pump signal; Subsequently, to next step 602, receive the seawater storehouse and jump the pump signal; Subsequently, to next step 603, according to described jumping pump signal, the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish; The safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish; This method ends at step 604 at last.Here be provided with four level sensors simultaneously in predetermined water level, make that have the two path water level sensor to send correct water level signal promptly can be converted into normally and jump the pump signal as long as get two logical circuits, effectively avoided because of level sensor fault, broken string and gather falseness that aspect factor such as fastener fault brings or the malfunction that the interference of disablement signal causes and the generation of tripping situation by four.
The present invention also constructs the control system that a kind of nuclear power station seawater reservoir level is jumped pump, in the structural representation of first preferred embodiment of the control system of nuclear power station seawater reservoir level jumping pump of the present invention as shown in Figure 7, the control system that described nuclear power station seawater reservoir level is jumped pump comprises signal receiving module 1, the first jumping pump module 2 and the second jumping pump module 3, and signal receiving module 1 is used to receive the seawater storehouse and jumps the pump signal; First jumps pump module 2 is used for according to described jumping pump signal, and the TXS system closes corresponding C RF pump and/or SEN pump by the breaking coil loop of the first via safe level of electric switch dish; Second jumps pump module 3 is used for according to described jumping pump signal, and the safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish.When using this nuclear power station seawater reservoir level to jump the control system of pump, as first jump pump module 2 the TXS system since fault can't be by the electric switch dish the breaking coil loop of first via safe level close corresponding C RF pump and/or SEN pump, the second safe level logical circuit of jumping the T2000 system of pump module 3 also can be closed corresponding C RF pump and/or SEN pump by the breaking coil loop of the second tunnel safe level of electric switch dish according to jumping the pump signal, and vice versa.Because the safe class of the jumping pumping function of the safe level logical circuit of TXS system and T2000 system is the F1B level, under the prerequisite of guaranteeing reliable tripping operation, reduced the level of security of the jumping pumping unit of TXS system, reduced the design of whole BOP part and the influence of buying fully.
In the structural representation of second preferred embodiment of the control system of nuclear power station seawater reservoir level jumping pump of the present invention as shown in Figure 8, the control system that described nuclear power station seawater reservoir level is jumped pump comprises that also the 3rd jumps pump module 4, the 3rd jumps pump module 4 is used for according to described jumping pump signal, and the non-safe level logical circuit of T2000 system is closed corresponding C RF pump and/or SEN pump by the control loop of the non-safe level of electric switch dish.Make whole jumping pump control system have trip(ping) circuit and a conventional control loop of two safe level by disposing the 3rd jumping pumping unit of jumping the non-safe level logical circuit of pump module 4, any one trip signal effectively can both be realized the reliable tripping operation of pump in three trip signals, has improved the reliability that nuclear power station seawater reservoir level is jumped the control method of pump greatly.
In the structural representation of the 3rd preferred embodiment of the control system of nuclear power station seawater reservoir level jumping pump of the present invention as shown in Figure 9, second jumps pump module 3 comprises first logical block 31 and the first jumping pump unit 32, first logical block 31 is used for the signal of the signal of the safe level logical circuit of T2000 system and other safe level jumping pumping system is got or handled, first jumps pump unit 32 is used for according to the getting or result of described first logical block 31, and corresponding C RF pump and/or SEN pump are closed in the breaking coil loop of the second tunnel safe level by the electric switch dish; The 3rd jumps pump module 4 comprises second logical block 41 and the second jumping pump unit 42, second logical block 41 is used for the signal of the signal of the non-safe level logical circuit of T2000 system and the conventional start stop system of equipment is got or handled, second jumps pump unit 42 is used for according to the getting or result of described second logical block 41, and the control loop of the non-safe level by the electric switch dish is closed corresponding C RF pump and/or SEN pump.The signal that the signal of the safe level logical circuit of 31 pairs of T2000 systems of first logical block and other safe level are jumped pumping systems is got or is handled and the signal of the non-safe level logical circuit of 41 pairs of T2000 systems of second logical block and the signal of the conventional start stop system of equipment are got or handled, employing is got or logic has reduced the circuit of jumping the pump part, has saved the cost of wiring.
In the structural representation of the 4th preferred embodiment of the control system of nuclear power station seawater reservoir level jumping pump of the present invention as shown in figure 10, the control system that described nuclear power station seawater reservoir level is jumped pump also comprises signal sets module 5, signal sets module 5 is used for described jumping pump signal and is divided at least two grades according to the water level in seawater storehouse, the jumping pump signal of each grade is used to close corresponding C RF pump and/or SEN pump, surveys the water level in described seawater storehouse by level sensor.5 pairs of jumping pumps of signal sets module signal carries out grade classification, make and when different water level, close corresponding water pump, guarantee can take into account to greatest extent simultaneously under the situation that satisfies SEC security level system water the economic availability requirement of power plant, water level can detect by at least one level sensor or other level detecting devices.
In the structural representation of the 5th preferred embodiment of the control system of nuclear power station seawater reservoir level jumping pump of the present invention as shown in figure 11, signal sets module 5 described jumping pump signals are divided into Three Estate according to the water level in seawater storehouse, the jumping pump signal of the first estate is used for the CRF pump of closed portion, the jumping pump signal of second grade is used for closeall CRF pump, the jumping pump signal of the tertiary gradient is used for closeall CRF pump and SEN pump, surveys the water level in described seawater storehouse by level sensor; Each water level of jumping the described seawater storehouse of pump signal correspondence is provided with four level sensors; The control system that described nuclear power station seawater reservoir level is jumped pump also comprises signal conversion module 6, and signal conversion module 6 is used for getting two logical circuits by four the signal of described level sensor is converted into corresponding jumping pump signal.Here be provided with four level sensors simultaneously in predetermined water level, as long as signal conversion module 6 is got two logical circuits by four and made that have the two path water level sensor to send correct water level signal promptly can be converted into normally and jump the pump signal, effectively avoided because of level sensor fault, broken string and gathered falseness that aspect factor such as fastener fault brings or the malfunction that the interference of disablement signal causes and the generation of tripping situation.
Describe nuclear power station seawater reservoir level of the present invention in detail below by Figure 12 and jump the principle that the control system of pump produces jumping pump signal, seawater reservoir level sensor is provided with four altogether, water level value is sent in the TXS/T2000 system after by the collection of I/O fastener simultaneously with the analog signals form, and signal is classified as the F1B level.After signals collecting entered the TXS/T2000 system, configuration was provided with three grades of limit values and handles three signals of back output through CPU in system software.Concrete limit value consider processing time that the operations staff is enough and through strict calculating after draw be respectively-6m ,-6.5m ,-7m.The water level limit value of jumping CRF pump and SEN pump from the graph as can be seen is divided into three ranks, and (6.0m), every unit is jumped two CRF pumps of first sequence to the low value of seawater reservoir level simultaneously; The seawater reservoir level hangs down two-value, and (6.5m), every unit is jumped two CRF pumps of another sequence simultaneously; The seawater reservoir level hangs down three values, and (7.0m) every unit is jumped whole SEN pumps.The purpose that pump is jumped in above-mentioned classification is can be the CRF of correspondence and the tripping operation of SEN pump to guarantee the water supply of SEC system when guaranteeing that the seawater reservoir level is low, why not that the pump of all main non-safe level water systems is all jumped simultaneously, its objective is the economic availability requirement that under the situation that satisfies SEC security level system water, can take into account power plant simultaneously to greatest extent.Concrete water level limit value is to calculate through the water conservancy project strictness, has considered sufficient allowance and the artificial time requirement that gets involved.
Describe the control system jumping pump Signal Processing scheme flow process that nuclear power station seawater reservoir level of the present invention is jumped pump in detail below by Figure 13, among the figure, logical circuit all is designed to four seawater reservoir level measuring-signals and all produces three grades of restriction signals in two platforms of TXS/T2000, the restriction signal of four same levels is got 2 logics through 4 in control system CPU processor, promptly having two signals in 4 restricting signals at least is that 1 back just can be thought and just produces jumping pump signal this moment by low this limit value that arrived of seawater reservoir level for the value of being detected.Do like this and effectively avoided because of level sensor fault, broken string and gather falseness that aspect factor such as fastener fault brings or the malfunction that the interference of disablement signal causes and the generation of tripping situation.
The source of concrete jumping pump signal is as follows:
1, it is direct by close corresponding CRF pump and SEN pump to the breaking coil loop of the first via safe level of the electric switch dish of corresponding device by I/0 fastener output signal in TXS that the pump signal is jumped in the seawater storehouse;
2, the pump signal is jumped in the seawater storehouse in the safe level logical circuit of T2000 system also needs to get in logic with other safe level jumping pump signal or then close corresponding CRF pump and SEN pump by I/O fastener output signal to the breaking coil loop of electric switch dish the second tunnel safe level of corresponding device.
3, all safe level is jumped the pump signal and is sent into all by the network communication mode between CPU simultaneously and get with the conventional start-stop signal of equipment in the non-safe level logical circuit of T2000 system or the back is closed corresponding CRF pump and SEN pump by I/O fastener output signal to the control loop of the non-safe level of electric switch dish.
The electric circuit breaker of the supporting CRF/SEN of scheme also disposes the trip(ping) circuit of two safe level and the conventional control loop of a non-safe level therewith.Any one trip signal effectively can both be realized the reliable tripping operation of pump in three trip signals.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure transformation that utilizes instructions of the present invention and accompanying drawing content to be done, or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. the control method of a nuclear power station seawater reservoir level jumping pump is characterized in that, comprises step:
The pump signal is jumped in S1, reception seawater storehouse;
S2, according to described jumping pump signal, the TXS system closes corresponding circulation pump and/or auxiliary cooling water system pump by the breaking coil loop of the first via safe level of electric switch dish; The safe level logical circuit of T2000 system is closed corresponding circulation pump and/or auxiliary cooling water system pump by the breaking coil loop of the second tunnel safe level of electric switch dish.
2. nuclear power station seawater reservoir level according to claim 1 is jumped the control method of pump, it is characterized in that, described step S2 comprises that also according to described jumping pump signal, the non-safe level logical circuit of T2000 system is closed corresponding circulation pump and/or auxiliary cooling water system pump by the control loop of the non-safe level of electric switch dish.
3. nuclear power station seawater reservoir level according to claim 2 is jumped the control method of pump, it is characterized in that, described step S2 is according to described jumping pump signal, and the TXS system closes corresponding circulation pump and/or auxiliary cooling water system pump by the breaking coil loop of the first via safe level of electric switch dish; The signal that signal and other safe level of the safe level logical circuit of T2000 system are jumped pumping systems is got or is handled the back and closes corresponding circulation pump and/or auxiliary cooling water system pump by the breaking coil loop of the second tunnel safe level of electric switch dish; The back is got or handled to the signal of the signal of the non-safe level logical circuit of T2000 system and the conventional start stop system of equipment close corresponding circulation pump and/or auxiliary cooling water system pump by the control loop of the non-safe level of electric switch dish.
4. nuclear power station seawater reservoir level according to claim 1 is jumped the control method of pump, it is characterized in that, comprises step before the step S1:
S0, described jumping pump signal are divided at least two grades according to the water level in seawater storehouse, and the jumping pump signal of each grade is used to close corresponding circulation pump and/or auxiliary cooling water system pump, survey the water level in described seawater storehouse by level sensor.
5. nuclear power station seawater reservoir level according to claim 4 is jumped the control method of pump, it is characterized in that, to be described jumping pump signal be divided into Three Estate according to the water level in seawater storehouse to described step S0, the jumping pump signal of the first estate is used for the circulation pump of closed portion, the jumping pump signal of second grade is used for closeall circulation pump, the jumping pump signal of the tertiary gradient is used for closeall circulation pump and auxiliary cooling water system pump, surveys the water level in described seawater storehouse by level sensor; Each water level of jumping the described seawater storehouse of pump signal correspondence is provided with four level sensors, gets two logical circuits by four the signal of described level sensor is converted into corresponding jumping pump signal.
6. the control system of a nuclear power station seawater reservoir level jumping pump is characterized in that, comprising:
Signal receiving module (1): be used to receive the seawater storehouse and jump the pump signal;
First jumps pump module (2): be used for according to described jumping pump signal, the TXS system closes corresponding circulation pump and/or auxiliary cooling water system pump by the breaking coil loop of the first via safe level of electric switch dish; And
Second jumps pump module (3): be used for according to described jumping pump signal, the safe level logical circuit of T2000 system is closed corresponding circulation pump and/or auxiliary cooling water system pump by the breaking coil loop of the second tunnel safe level of electric switch dish.
7. nuclear power station seawater reservoir level according to claim 6 is jumped the control system of pump, it is characterized in that, the control system that described nuclear power station seawater reservoir level is jumped pump also comprises:
The 3rd jumps pump module (4): be used for according to described jumping pump signal, the non-safe level logical circuit of T2000 system is closed corresponding circulation pump and/or auxiliary cooling water system pump by the control loop of the non-safe level of electric switch dish.
8. nuclear power station seawater reservoir level according to claim 7 is jumped the control system of pump, it is characterized in that, described second jumps pump module (3) comprising:
First logical block (31): be used for the signal that signal and other safe level of the safe level logical circuit of T2000 system are jumped pumping systems is got or handled; And
First jumps pump unit (32): be used for according to the getting or result of described first logical block (31), corresponding circulation pump and/or auxiliary cooling water system pump are closed in the breaking coil loop of the second tunnel safe level by the electric switch dish;
The described the 3rd jumps pump module (4) comprising:
Second logical block (41): be used for the signal of the non-safe level logical circuit of T2000 system and the signal of the conventional start stop system of equipment are got or handled; And
Second jumps pump unit (42): be used for according to the getting or result of described second logical block (41), the control loop of the non-safe level by the electric switch dish is closed corresponding circulation pump and/or auxiliary cooling water system pump.
9. nuclear power station seawater reservoir level according to claim 6 is jumped the control system of pump, it is characterized in that, the control system that described nuclear power station seawater reservoir level is jumped pump also comprises:
Signal sets module (5): be used for described jumping pump signal and be divided at least two grades according to the water level in seawater storehouse, the jumping pump signal of each grade is used to close corresponding circulation pump and/or auxiliary cooling water system pump, surveys the water level in described seawater storehouse by level sensor.
10. nuclear power station seawater reservoir level according to claim 9 is jumped the control system of pump, it is characterized in that, described signal sets module (5) is used for described jumping pump signal and is divided into Three Estate according to the water level in seawater storehouse, the jumping pump signal of the first estate is used for the circulation pump of closed portion, the jumping pump signal of second grade is used for closeall circulation pump, the jumping pump signal of the tertiary gradient is used for closeall circulation pump and auxiliary cooling water system pump, surveys the water level in described seawater storehouse by level sensor;
Each water level of jumping the described seawater storehouse of pump signal correspondence is provided with four level sensors;
The control system that described nuclear power station seawater reservoir level is jumped pump also comprises:
Signal conversion module (6): be used for getting two logical circuits the signal of described level sensor is converted into corresponding jumping pump signal by four.
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| CN106875993A (en) * | 2017-01-04 | 2017-06-20 | 中广核研究院有限公司 | Presurized water reactor power generator turbine has tripped sign signal generating method |
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| CN113202738A (en) * | 2021-04-29 | 2021-08-03 | 中国核电工程有限公司 | Device and method for preventing nuclear power plant circulating water pump from mistakenly jumping pump |
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| CN103426483A (en) * | 2012-05-24 | 2013-12-04 | 中国核动力研究设计院 | Main pump trip-out logic control method aiming at two loops |
| CN103426483B (en) * | 2012-05-24 | 2016-01-27 | 中国核动力研究设计院 | A kind of main pump trip-out logic control method for two loops |
| CN102737745A (en) * | 2012-06-27 | 2012-10-17 | 中广核工程有限公司 | Method and system for testing pump tripping function of pump of CRF (circulation water system)/SEN (secondary cooling water system) of nuclear power station |
| CN107527667A (en) * | 2016-06-22 | 2017-12-29 | 福建宁德核电有限公司 | A kind of nuclear power station Important Auxiliary equipment protects system |
| CN107527667B (en) * | 2016-06-22 | 2019-07-16 | 福建宁德核电有限公司 | A kind of nuclear power station Important Auxiliary equipment protection system |
| CN106875993A (en) * | 2017-01-04 | 2017-06-20 | 中广核研究院有限公司 | Presurized water reactor power generator turbine has tripped sign signal generating method |
| CN106875993B (en) * | 2017-01-04 | 2019-03-19 | 中广核研究院有限公司 | Presurized water reactor power generator turbine, which has tripped, characterizes signal generating method |
| CN107895599A (en) * | 2017-10-12 | 2018-04-10 | 中广核研究院有限公司 | A kind of voltage-stablizer water level measurement method and voltage-stablizer |
| CN111237016A (en) * | 2020-03-20 | 2020-06-05 | 浙江华元汽轮机械有限公司 | Four-taking two-speed shutdown control system |
| CN111237016B (en) * | 2020-03-20 | 2024-05-17 | 浙江华元汽轮机械有限公司 | Four-taking-out and two-speed-off shutdown control system |
| CN113202738A (en) * | 2021-04-29 | 2021-08-03 | 中国核电工程有限公司 | Device and method for preventing nuclear power plant circulating water pump from mistakenly jumping pump |
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Address after: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Patentee after: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Address before: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Patentee before: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. |
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