CN209418160U - Nuclear power plant instrument control system by-pass collar and system - Google Patents
Nuclear power plant instrument control system by-pass collar and system Download PDFInfo
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- CN209418160U CN209418160U CN201821725541.0U CN201821725541U CN209418160U CN 209418160 U CN209418160 U CN 209418160U CN 201821725541 U CN201821725541 U CN 201821725541U CN 209418160 U CN209418160 U CN 209418160U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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Abstract
In order to solve in the prior art through technical problems such as coupling existing for software control by-pass collar, increase test job amounts, the utility model provides a kind of nuclear power plant instrument control system by-pass collar, described device includes: on-site signal receiving unit, stimulus receiving unit, control unit is connected in bypass signal receiving unit；The conducting control unit includes hardware control circuit, the hardware control circuit is arranged to based on after the received bypass signal of bypass signal receiving unit, corresponding bypass signal is converted to the analog signal for being input to the hardware control circuit, and whether the analog signal is received by the hardware control circuit, to control the stimulus receiving unit, whether the circuit between control station in nuclear power plant instrument control system is connected.Therefore, relay protective scheme in bypass function and control station may be implemented by hardware circuit, does not couple, avoid influencing automatic logic due to bypass logic.
Description
Technical field
The utility model relates to the technical field of nuclear power plant instrument control system more particularly to a kind of nuclear power plant instrument control system are other
Exchange device and system.
Background technique
At present in nuclear power station, many by-pass collars are usually set in the I&C system of nuclear power station.As shown in Figure 1, being existing
There is a kind of partial schematic diagram of nuclear power plant instrument control system by-pass collar in technology, the bypass design is usually by software logic reality
It is existing；Concrete implementation method are as follows: bypass signal is sent to control station, and bypass processing operation is carried out in control station；Bypass logic is real
Existing mode are as follows: while control station receives this channel bypass signal, also receive the bypass signal from other channels, first determine whether
Whether there are other channels to bypass, if any, then do not allow this channel bypass, if not having, this channel is bypassed.
But utility model people has found in the process of implementing the utility model, in above scheme, there are the following problems:
1), bypass logic be normally logically present and couple automatically (coupling refer to two or more circuit elements or
Exist between the input and output of electric network etc. and be fitted close and influence each other, and is passed by interaction from a side to the other side
The phenomenon that delivery of energy amount), once there is bypass logic mistake, it is possible to influence the normal function of system.
2), the increase of bypass logic not only increases the complexity of engineering design, also increases engineering V&V (software verification
With confirmation), the workload of test.
3), once there is software common cause fault, the bypass in multiple channels can fail simultaneously.
Utility model content
In order to solve in the prior art through technologies such as coupling existing for software control by-pass collar, increase test job amounts
Problem, the utility model provide a kind of nuclear power plant instrument control system by-pass collar and system, pass through hardware circuit and pre-fabricated electric cables
Simplify wiring, relay protective scheme in bypass function and control station may be implemented, do not couple, avoids influencing due to bypass logic automatic
Logic.
To achieve the goals above, technical solution provided by the utility model includes:
On the one hand the utility model provides a kind of nuclear power plant instrument control system by-pass collar characterized by comprising
On-site signal receiving unit, for receiving the signal of the nuclear power plant instrument control system for field equipment input；
Stimulus receiving unit, for receiving the signal of the nuclear power plant instrument control system experimental rig input；
Bypass signal receiving unit, for receiving bypass signal；
Control unit is connected, the conducting control unit includes hardware control circuit；The hardware control circuit is arranged to
After the received bypass signal of bypass signal receiving unit, corresponding bypass signal is converted to and is input to the hardware
The analog signal of control circuit, and whether the analog signal is received by the hardware control circuit, to control the examination
Testing signal receiving unit, whether the circuit between control station in nuclear power plant instrument control system is connected.
In preferred embodiment provided by the embodiment of the utility model, the hardware control circuit includes receiving the simulation
The coil of signal, and the single-pole double-throw switch (SPDT) with the fitting coils, the single-pole double-throw switch (SPDT) are in response to the coil
No receiving end to the analog signal, come control the stimulus receiving unit whether with control station in nuclear power plant instrument control system
Between circuit conducting.
The utility model embodiment is provided in further preferred embodiment, and the on-site signal receiving unit includes more
The on-site signal receiving terminal of a parallel connection, the stimulus receiving unit include the stimulus receiving terminal of multiple parallel connections,
The hardware control circuit includes multiple coils being arranged in parallel and multiple single-pole double throws with coil corresponding matching respectively
Switch, the bypass signal receiving unit include providing the bypass signal terminal of analog signal to the multiple coil simultaneously；And
And each single-pole double-throw switch (SPDT) has been correspondingly connected with an on-site signal receiving terminal and a stimulus receiving terminal.
In preferred embodiment provided by the embodiment of the utility model, the stimulus receiving unit is provided with and tests
Device connects the first prefabricated cable interface, and the nuclear power plant instrument control system further includes connecing with control station with by-pass collar
Mouth connects the second prefabricated cable interface.
On the other hand the utility model also provides a kind of nuclear power plant instrument control system bypass system characterized by comprising
Nuclear power plant instrument control system by-pass collar as described in any one provided such as first aspect, and by the nuclear power plant instrument control system
The pre-fabricated electric cables being connect with by-pass collar with experimental rig and control station.
In preferred embodiment provided by the embodiment of the utility model, the nuclear power plant instrument control system is distinguished with by-pass collar
It connect with the input interface of the control station and output interface, and is connect with live executing agency, so that the experimental rig
Signal can be directly transmitted to by the nuclear power plant instrument control system with by-pass collar described after control station processing
Live executing agency.
In preferred embodiment provided by the embodiment of the utility model further include: received by the first prefabricated cable interface
Stimulus from experimental rig, and exported by the second prefabricated cable interface to control station.
Above embodiment is provided using the utility model, can at least obtain one of following beneficial effect:
1, during realizing bypass switching control by the analog signal combination hardware control circuit of generation, without to bypass
Device carries out software control, avoids the problem that software common cause failure.
2, relay protective scheme in bypass function and control station is realized by the analog signal combination hardware control circuit of generation, it should
Analog signal and hardware control circuit are that by-pass governing is dedicated, with other elements without interrelated control, do not couple, keep away in this way
Exempt from the case where automatic logic is influenced due to bypass logic.
3, engineering design is simple, does not need engineering V&V (software verification and confirmation), reduces workload；Can especially it lead to
Cross prefabricated cable interface and cable, the quick connection between Lai Shixian by-pass collar, experimental rig and control station.
4, hardware control circuit can be by simple, common electric elements realization pair by coil, single-pole double-throw switch (SPDT)
The stability contorting of bypass signal, and not will increase dramatically technology cost of implementation.And it is preferred, a bypass signal can be passed through
Each corresponding bypass signal terminal is corresponding with control station in nuclear power plant instrument control system respectively in Control experiment signal receiving unit
Port conducting, the parallel input that a bypass signal fast implements multiple stimulus can be inputted in this way.
The other feature and advantage of utility model will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood and implementing the technical solution of the utility model.The purpose of this utility model and other advantages
It can be achieved and obtained by specifically noted in the specification, claims and drawings structure and/or process.
Detailed description of the invention
Fig. 1 is a kind of partial schematic diagram of nuclear power plant instrument control system by-pass collar in the prior art.
Fig. 2 provides a kind of structural block diagram of nuclear power plant instrument control system by-pass collar for an embodiment of the present invention.
Fig. 3 provides a kind of structural representation of nuclear power plant instrument control system by-pass collar for another embodiment of the utility model
Figure.
Fig. 4 provides a kind of structural representation of nuclear power plant instrument control system by-pass collar for another embodiment of the utility model
Figure.
Fig. 5 provides a kind of structural schematic diagram of nuclear power plant instrument control system bypass system for an embodiment of the present invention.
Fig. 6 provides a kind of structural representation of nuclear power plant instrument control system bypass system for another embodiment of the utility model
Figure.
Specific embodiment
The embodiments of the present invention is described in detail below with reference to accompanying drawings and embodiments, whereby to the utility model
How applied technology method solves technical problem, and the realization process for reaching technical effect can fully understand and implement.
It should be noted that these specific descriptions only allow those of ordinary skill in the art to be more easier, to clearly understand this practical new
Type, rather than the limited explanation to the utility model；As long as and do not constitute conflict, each embodiment in the utility model with
And each feature in each embodiment can be combined with each other, be formed by technical solution the protection scope of the utility model it
It is interior.
In addition, step shown in the flowchart of the accompanying drawings can be in the control system of a such as group controller executable instruction
Middle execution, although also, logical order is shown in flow charts, and it in some cases, can be to be different from herein
Sequence executes shown or described step.
Below by the drawings and specific embodiments, the technical solution of the utility model is described in detail:
Embodiment
As shown in Fig. 2, the present embodiment provides a kind of nuclear power plant instrument control system by-pass collar, which includes:
On-site signal receiving unit, for receiving the signal of nuclear power plant instrument control system for field equipment input；
Stimulus receiving unit, for receiving the signal of nuclear power plant instrument control system experimental rig input；
Bypass signal receiving unit, for receiving bypass signal；
Control unit is connected, conducting control unit includes hardware control circuit；Hardware control circuit is arranged to based on bypass
After the received bypass signal of signal receiving unit, corresponding bypass signal is converted to the simulation letter for being input to hardware control circuit
Number, and whether analog signal is received by hardware control circuit, come Control experiment signal receiving unit whether with nuclear power plant instrument
Circuit conducting in control system between control station.
It should be noted that above-mentioned refer to that " hardware control circuit is arranged to based on the received side of bypass signal receiving unit
After messenger, corresponding bypass signal is converted to the analog signal for being input to hardware control circuit " implementation include but
It is not limited to: if it is analog signal, hardware controls that the bypass information that above-mentioned bypass signal receiving unit receives, which has corresponded to,
Circuit directly receives the analog signal being input in it；If the bypass information that above-mentioned bypass signal receiving unit receives is
When digital quantity signal, D/A converter module can be set in hardware control circuit, which is converted into analog quantity
Signal, other electrical components (such as coil is mentioned below) being then input in hardware control circuit；It can also be by being arranged in
Bypass signal is converted to analog signal by the D/A converter module in by-pass collar, independently of hardware control circuit.
As shown in Figure 3, Figure 4, in specific embodiment provided by the embodiment of the utility model, hardware in by-pass collar 100
Control circuit (shown in dotted line) includes the coil for receiving analog signal, and the single-pole double-throw switch (SPDT) with fitting coils, and hilted broadsword is double
Whether receiving end is to analog signal in response to coil for throw switch, come Control experiment signal receiving unit whether with nuclear power plant instrument control system
Circuit conducting in system between control station；I.e. when there is bypass signal, the coil in by-pass collar is powered, at this point, coil is corresponding
Contact be strobed into stimulus, stimulus can be connected by I/O signal processing with control station.When bypass signal is cancelled
Afterwards, coil losing electricity, at this point, the corresponding contact of coil is strobed into on-site signal, on-site signal can pass through I/O signal processing unit
It is connected with control station.
Certainly, hardware control circuit provided in this embodiment is not limited to the embodiment party of coil and single-pole double-throw switch (SPDT) relay
Formula, can also be by replacing with the magnetic element controlled by analog electrical signal for coil, which receives simulation electricity
When signal, generate magnetic, and when magnetic element does not receive analog electrical signal, magnetism disappears；A part of single-pole double-throw switch (SPDT)
It is provided with part permanent-magnet materials, when magnetic element receives analog electrical signal, single-pole double throw opens corresponding permanent magnetism material
Material is attracted by magnetic element, and the circuit in Control experiment signal receiving unit and nuclear power plant instrument control system between control station is led
It is logical；When magnetic element does not receive analog electrical signal, single-pole double throw opens corresponding permanent-magnet materials will not be by magnetic element
Attract, and the circuit between Control experiment signal receiving unit and control station in nuclear power plant instrument control system is connected.Furthermore it is also possible to
Electromagnetic Control mode between coil and single-pole double-throw switch (SPDT) is substituted for mechanical linkage control etc..These different specific implementations
Mode belongs to the protection scope of the utility model embodiment.
As shown in figure 5, for the ease of engineering construction, coming from experimental rig in preferred embodiment provided in this embodiment
Signal and I/O signal connect with by-pass collar by pre-fabricated electric cables, the signal from scene by connecting terminal with bypass dress
Set connection.Specifically: stimulus receiving unit, which is provided with, to be connect with the first prefabricated cable interface with experimental rig, and core
Power station I&C system by-pass collar further includes connecting with control station interface with the second prefabricated cable interface；Preferably, first
Cable interface and the second cable interface are respectively DB25 type interface.
Therefore, by above embodiment, the analog signal combination hardware control circuit based on generation realizes bypass switching
In control process, without carrying out software control to by-pass collar, software common cause failure is avoided the problem that.And the mould based on generation
Quasi- signal combination hardware control circuit realizes relay protective scheme, the analog signal and hardware control circuit in bypass function and control station
It is dedicated for by-pass governing, it with other elements without interrelated control, does not couple in this way, avoids influencing due to bypass logic automatic
The case where logic.In addition it is possible to which it is simple to meet engineering design, engineering V&V is not needed, reduces workload；Can especially it lead to
Cross prefabricated cable interface and cable, the quick connection between Lai Shixian by-pass collar, experimental rig and control station.
As shown in figure 3, on-site signal receiving unit includes multiple the present embodiment provides in further preferred embodiment
On-site signal receiving terminal 151,161,171 in parallel, stimulus receiving unit include that the stimulus of multiple parallel connections receives
Terminal 153,163,173, hardware control circuit include multiple coils 111,121,132 being arranged in parallel and it is multiple respectively with it is each
The single-pole double-throw switch (SPDT) 113,123,133 of coil corresponding matching, bypass signal receiving unit include providing simultaneously to multiple coils
The bypass signal terminal 140 of analog signal；And each coil is correspondingly arranged on matched single-pole double-throw switch (SPDT), Mei Gedan
Double-pole double throw switch (113,123,133) has been correspondingly connected with on-site signal receiving terminal (115,125,135) and a test
Signal receiving end (117,127,137).
In certain by-pass collar every group of channel can be not limited to one on-site signal receiving terminal of this needs in Fig. 3,
One stimulus receiving terminal and a hilted broadsword even numbers switch (or single-pole double-throw relay)；It can also be arranged to such as Fig. 4
Corresponding embodiment.As shown in figure 4, every group of stimulus and on-site signal are respectively set, there are two terminals, and correspondingly
There are two single-pole double-throw relays for setting, the two single-pole double-throw relays can be by a coil or two different coils
Control.
As shown in figure 5, the present embodiment also provides a kind of nuclear power plant instrument control system bypass system comprising: such as above-mentioned
It anticipates a kind of nuclear power plant instrument control system by-pass collar, and by nuclear power plant instrument control system by-pass collar and experimental rig and control
Stand connection pre-fabricated electric cables.
As shown in fig. 6, in preferred embodiment provided in this embodiment, nuclear power plant instrument control system with by-pass collar respectively with
The input interface of control station is connected with output interface, and is connect with live executing agency, so that the signal of experimental rig is by control
After station processing processed, live executing agency directly can be transmitted to by-pass collar by nuclear power plant instrument control system.Specifically: just
Chang Shi, bypass cock are in normal position, and experimental rig and diversity drive system disconnect.During the test, bypass is opened
Concern changes to bypass position, and by-pass collar receives bypass signal at this time, and on-site signal is by the stimulus from experimental rig
Substitution, while the signal for being sent to executing agency is sent to routine test device.When off-test, bypass cock is switched to normally
Position, stimulus is restored to on-site signal at this time, while executing agency is sent in the logic output after operation.
Using in above-mentioned preferred embodiment provided in this embodiment, hardware control circuit is opened by coil, single-pole double throw
The stability contorting that can be realized by simple, common electric elements to bypass signal is closed, and not will increase dramatically technology realization
Cost.And in preferred embodiment, each correspondence in a bypass signal Control experiment signal receiving unit can be passed through
Corresponding with control station in the nuclear power plant instrument control system port conducting respectively of bypass signal terminal, primary bypass can be inputted in this way
Signal fast implements the parallel input of multiple stimulus.
Above embodiment is provided using the application, can at least obtain one of following beneficial effect:
1, during realizing bypass switching control by the analog signal combination hardware control circuit of generation, without to bypass
Device carries out software control, avoids the problem that software common cause failure.
2, relay protective scheme in bypass function and control station is realized by the analog signal combination hardware control circuit of generation, it should
Analog signal and hardware control circuit are that by-pass governing is dedicated, with other elements without interrelated control, do not couple, keep away in this way
Exempt from the case where automatic logic is influenced due to bypass logic.
3, engineering design is simple, does not need engineering V&V, reduces workload；Prefabricated cable interface can especially be passed through
And cable, the quick connection between Lai Shixian by-pass collar, experimental rig and control station.
4, hardware control circuit can be by simple, common electric elements realization pair by coil, single-pole double-throw switch (SPDT)
The stability contorting of bypass signal, and not will increase dramatically technology cost of implementation.And it is preferred, a bypass signal can be passed through
Each corresponding bypass signal terminal is corresponding with control station in nuclear power plant instrument control system respectively in Control experiment signal receiving unit
Port conducting, the parallel input that a bypass signal fast implements multiple stimulus can be inputted in this way.
Finally, it should be noted that above description is only the most preferred embodiment of the utility model, it is not practical to this
The novel limitation done in any form.Anyone skilled in the art is not departing from technical solutions of the utility model model
In enclosing, all using the way of the disclosure above and technology contents to technical solutions of the utility model make many possible variations and
Simple replacement etc., these belong to the range of technical solutions of the utility model protection.
Claims (6)
1. a kind of nuclear power plant instrument control system by-pass collar characterized by comprising
On-site signal receiving unit, for receiving the signal of the nuclear power plant instrument control system for field equipment input；
Stimulus receiving unit, for receiving the signal of the nuclear power plant instrument control system experimental rig input；
Bypass signal receiving unit, for receiving bypass signal；
Control unit is connected, the conducting control unit includes hardware control circuit；The hardware control circuit is arranged to be based on
After the received bypass signal of bypass signal receiving unit, corresponding bypass signal is converted to and is input to the hardware controls
The analog signal of circuit, and whether the analog signal is received by the hardware control circuit, to control the test letter
Whether the circuit between control station in nuclear power plant instrument control system is connected for number receiving unit.
2. the apparatus according to claim 1, which is characterized in that the hardware control circuit includes receiving the analog signal
Coil, and whether the single-pole double-throw switch (SPDT) with the fitting coils, the single-pole double-throw switch (SPDT) connect in response to the coil
Receiving end is to the analog signal, to control the stimulus receiving unit whether between control station in nuclear power plant instrument control system
Circuit conducting.
3. the apparatus of claim 2, which is characterized in that the on-site signal receiving unit includes multiple in parallel shows
Field signal receiving terminal, the stimulus receiving unit include the stimulus receiving terminal of multiple parallel connections, the hardware control
Circuit processed includes multiple coils being arranged in parallel and multiple single-pole double-throw switch (SPDT)s with coil corresponding matching respectively, the side
Messenger receiving unit includes providing the bypass signal terminal of analog signal to the multiple coil simultaneously；And each list
Double-pole double throw switch has been correspondingly connected with an on-site signal receiving terminal and a stimulus receiving terminal.
4. the apparatus according to claim 1, which is characterized in that the stimulus receiving unit is provided with and experimental rig
The first prefabricated cable interface is connected, and the nuclear power plant instrument control system by-pass collar further includes connecting with control station interface
It connects with the second prefabricated cable interface.
5. a kind of nuclear power plant instrument control system bypass system characterized by comprising if claim 1-4 is as described in any one
Nuclear power plant instrument control system by-pass collar, and by the nuclear power plant instrument control system by-pass collar and experimental rig and control station
The pre-fabricated electric cables of connection.
6. system according to claim 5, which is characterized in that the nuclear power plant instrument control system with by-pass collar respectively with institute
The input interface for stating control station is connected with output interface, and is connect with live executing agency, so that the signal of the experimental rig
After handling by the control station, the scene directly can be transmitted to by-pass collar by the nuclear power plant instrument control system
Executing agency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821725541.0U CN209418160U (en) | 2018-10-24 | 2018-10-24 | Nuclear power plant instrument control system by-pass collar and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821725541.0U CN209418160U (en) | 2018-10-24 | 2018-10-24 | Nuclear power plant instrument control system by-pass collar and system |
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| Publication Number | Publication Date |
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| CN209418160U true CN209418160U (en) | 2019-09-20 |
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| CN201821725541.0U Active CN209418160U (en) | 2018-10-24 | 2018-10-24 | Nuclear power plant instrument control system by-pass collar and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243651A (en) * | 2018-10-24 | 2019-01-18 | 北京广利核系统工程有限公司 | Nuclear power plant instrument control system by-pass collar, method and system |
| CN113759862A (en) * | 2020-06-05 | 2021-12-07 | 北京广利核系统工程有限公司 | Signal switching device and signal control method |
-
2018
- 2018-10-24 CN CN201821725541.0U patent/CN209418160U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243651A (en) * | 2018-10-24 | 2019-01-18 | 北京广利核系统工程有限公司 | Nuclear power plant instrument control system by-pass collar, method and system |
| CN109243651B (en) * | 2018-10-24 | 2024-09-03 | 北京广利核系统工程有限公司 | Bypass device, method and system for instrument control system of nuclear power station |
| CN113759862A (en) * | 2020-06-05 | 2021-12-07 | 北京广利核系统工程有限公司 | Signal switching device and signal control method |
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