CN205744012U - A kind of two from three voting, four take two hydraulic pressure blocking steam turbine protection device - Google Patents
A kind of two from three voting, four take two hydraulic pressure blocking steam turbine protection device Download PDFInfo
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- CN205744012U CN205744012U CN201620672032.0U CN201620672032U CN205744012U CN 205744012 U CN205744012 U CN 205744012U CN 201620672032 U CN201620672032 U CN 201620672032U CN 205744012 U CN205744012 U CN 205744012U
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Abstract
nullThe utility model discloses a kind of two from three voting、The four steam turbine protection devices taking two hydraulic pressure blockings，Including the sensor for measuring turbine parameters、Input card、Redundant manipulator、Four-way amount of logic output card and four takes two hydraulic pressure and interdicts mechanism，Also include the analog circuit for analogue measurement sensor fault，Analog circuit includes amount of logic output card DO and fault simulation relay，The input of amount of logic output card (DO) is connected with redundant manipulator，The outfan of amount of logic output card (DO) is sealed in sensor measurement loop by the normally-closed contact of fault simulation relay，The normally opened contact string of relay is in four current supply circuits taking two hydraulic actuating mechanisms，This device achieves the simulation of the element device level faults of all signal of interests of steam turbine protection device，Four row extensions of two from three logic voting and two from three voting and four take the Channel Test of the protection passages of two hydraulic pressure cut-ofves.
Description
Technical field
This utility model relates to Protection System of Turbin framework, particularly relates to the voting of a kind of two from three, four takes two hydraulic pressure and hide
The channel design of disconnected steam turbine protection device and logic realization.
Background technology
Protection System of Turbin is by in-site measurement sensor, I/O fastener, controller, relay and oil circuit actuator structure
Become, see Fig. 1: existing ETS system architecture.Protection System of Turbin mainly completes steam turbine accident operating mode or monitors data exception
Time, complete steam turbine interdiction chaser function, be the core of steam turbine protection.Conventional Protection System of Turbin is that triple redundance scene is surveyed
Amount original paper, triple ETS protect controller, two from three hydraulic actuating mechanism, complete the two from three chaser of unit.In order to ensure steamer
Machine protection system is able to carry out chaser function when demand is protected, and makes Turbine Safety shut down, needs vapour when properly functioning
Turbine protection passage carries out being periodic channel test, and whether normal the function of checking protection passage is.At triple protection passage
Under structure, the Channel Test of Protection System of Turbin is relatively easy, only to test three protection passages one by one, observe
Single path feedback.And actuator only tested by experiment, do not test measuring components and parts.
Existing domestic Hua Longyi unit and CAP1400 nuclear power generating sets, the ETS framework of use is triple redundance in-site measurement unit
Device, redundant manipulator, four row I/O fasteners and four take two hydraulic actuating mechanism compositions.On-the-spot three signals are held in controller
Row two from three logic is decided by vote, and output is extended to four row, performs four and takes the logic of two, be finally completed unit chaser in actuator
Protection.Three row measure input signal, and redundant manipulator and four takes two hydraulic pressure and interdicts mechanism, can not be in a pair on protection passage
The relation of one, cannot be carried out man-to-man Channel Test when periodic channel is tested, it is necessary to use new test framework and stream
Journey, can carry out protecting the periodic test of passage, and measurement components and parts and logic to be verified by passage experiment completely, protect
Card Protection System of Turbin measures components and parts in long-term operation and actuator is the most reliable.
Separately having China Patent No. is 201420317119.7, discloses a kind of turbine speed two from three chaser protection dress
Put, belong to steam turbine chaser protection field.Software is used to realize in order to solve existing two from three turbine speed protection device
Poor reliability, and cannot the problem of intuitive judgment every road rotating speed whether fault.It includes three road rotating speed cards, six tunnel chaser dry contacts
With a chaser State-output contact, three road rotating speed cards respectively export two-way chaser signal respectively give six tunnel chaser dry contacts, first
Chaser dry contact J1-1 and the second chaser dry contact J1-2 is connected into the first series arm, described 3rd chaser dry contact J2-1 and
The forth jump machine dry contact J2-2 is connected into the second series arm, described the fifth jump machine dry contact J3-1 and the 6th chaser dry contact
J3-2 is connected into the 3rd series arm, is connected in parallel with chaser State-output contact after three series arm parallel connections.This device exists
Achieve the voting of rotating speed two from three on circuit, but cannot realize from measuring the components and parts mould to the whole signal link of actuator
Intend test.
Utility model content
In order to overcome the defect of above-mentioned prior art, this utility model provides the voting of a kind of two from three, four takes two hydraulic pressure
The steam turbine protection device of blocking, this utility model device changes tradition steam turbine protection apparatus structure: at three row prototype parts
Test is measured end and is performed sensor fault simulation；For hardware protection passage, after three row passages, increase relay logic, it is achieved
Four-way extension after two from three voting；Software realizes the simulation test by column of three row protection original papers and achieves four
The test by column of row executor, to ensure the equipment checking in the reliability of run duration.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of two from three voting, four take two hydraulic pressure blocking steam turbine protection device, including for measuring turbine parameters
Sensor, input card, redundant manipulator, execution passage and blocking actuator, sensor is connected with input card, input card and
Redundant manipulator connect, redundant manipulator with perform passage is connected, execution passage string interdict actuator current supply circuit in,
It is characterized in that: also include that the analog circuit for analogue measurement sensor fault, described analog circuit include that amount of logic exports
Card (DO) and fault simulation relay, the input of amount of logic output card (DO) is connected with redundant manipulator, and amount of logic exports
The outfan of card (DO) is sealed in sensor measurement loop by the normally-closed contact of fault simulation relay；Described blocking is held
Row mechanism be four take two hydraulic pressure blocking mechanism, described execution passage be four row perform passages, each column passage includes interconnective
Amount of logic output card and relay, amount of logic output card is connected with redundant manipulator, and the normally opened contact string of relay takes two four
In the current supply circuit of hydraulic actuating mechanism.
Four row perform in passage, and wherein the relay normally open contact of string execution passage is existed by two from three voting loop string
In four current supply circuits taking two hydraulic actuating mechanisms.
Four row perform in passage, and each column is performed the relay normally open contact of passage and taken four by two from three voting loop string
In the current supply circuit of two hydraulic actuating mechanisms.
Described sensor includes that rotating speed measuring sensor, high pressure steam discharge measure sensor and low pressure steam discharge measures sensor,
Described input card includes analog signal input card AI and amount of logic input card DI, and described rotating speed measuring sensor is defeated by analog quantity
Entering card AI to be connected with redundant manipulator, high pressure steam discharge measures sensor and low pressure steam discharge measurement sensor is defeated by amount of logic respectively
Enter card DI to be connected with redundant manipulator.
This utility model has the advantage that
1, this utility model device changes tradition steam turbine protection apparatus structure: three traditional row are measured corresponding three row
The traditional structure of actuator is changed to three row and measures corresponding 4 row actuators；
2, this utility model is measured end in three row prototype part tests and is performed sensor fault simulation；Charged by relay
Simulation disconnects measurement circuitry, and to detect corresponding to fault simulation of equipment, demonstrate from signal measurement end to actuator is whole
The reliability of individual signal link.
3, this utility model is for hardware protection passage, increases relay logic, it is achieved two from three is decided by vote after three row passages
After four-way extension；Solve measure three row with executor four row can not one_to_one corresponding experiment problem；
4, on software, realize the simulation test by column of three row protection original papers and achieve the examination by column of 4 row executors
Test, to ensure the equipment checking in the reliability of run duration.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art；
Fig. 2 is the electrical structure schematic diagram of embodiment 1 of the present utility model；
Fig. 3 is the electrical structure schematic diagram of embodiment 2 of the present utility model；
Fig. 4 is to relay hypervelocity simulation test logic chart；
Fig. 5 is to hydraulic actuating mechanism hypervelocity simulation test logic chart；
Fig. 6 is that two from three is decided by vote, the four steam turbine protection device components and parts levels protection Channel Tests taking two hydraulic pressure blockings are patrolled
Volume.
Labelling in figure: 1, rotating speed measuring sensor, 2, high pressure steam discharge measure sensor send out, 3, low pressure steam discharge measure sensing
Device, 4, redundant manipulator, 5, blocking actuator, 6, two from three voting loop.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described further:
Embodiment 1
As in figure 2 it is shown, a kind of two from three voting, four take two hydraulic pressure blocking steam turbine protection device, including for measuring
The sensor of turbine parameters, input card, redundant manipulator 4, execution passage and blocking actuator 5, sensor and input card
Connecting, input card is connected with redundant manipulator 4, and redundant manipulator 4 is connected with performing passage, performs passage and passes through the normal of relay
Open contact to go here and there in the current supply circuit of blocking actuator 5, also include the analog circuit for analogue measurement sensor fault, institute
State analog circuit and include amount of logic output card DO and fault simulation relay, the input of amount of logic output card DO and redundancy control
Device processed connects, and the outfan of amount of logic output card DO seals in sensor measurement by the normally-closed contact of fault simulation relay and returns
Lu Zhong；Described blocking actuator be four take two hydraulic pressure blocking mechanism, perform passage be four row perform passages, each column passage bag
Including interconnective amount of logic output card DO and relay, amount of logic output card DO is connected with redundant manipulator, relay normal
Open contact to go here and there in four current supply circuits taking two hydraulic actuating mechanisms.
Sensor include rotating speed measuring sensor 1(its for the measurement of turbine speed), high pressure steam discharge measures sensor 2
(it is for the measurement of steam turbine high-pressure cylinder aerofluxus) and low pressure steam discharge measure sensor 3(, and it is used for turbine low pressure cylinder aerofluxus
Measure), and every kind of sensor is three, described input card includes analog signal input card AI and amount of logic input card DI, described
Rotating speed measuring sensor is connected with redundant manipulator by analog signal input card AI, and high pressure steam discharge measures sensor and low pressure steam discharge
Measure sensor to be connected with redundant manipulator by amount of logic input card DI respectively.The outfan of amount of logic output card DO passes through
The concrete mode that the normally-closed contact of fault simulation relay seals in sensor measurement loop is: amount of logic output card DO's is defeated
Go out end and seal in rotating speed measuring sensor 1 and analog signal input card by the normally-closed contact of fault simulation relay k31, k32, k33
In the sensor measurement loop of AI composition；The outfan of amount of logic output card DO passes through fault simulation relay k41, k42, k43
Normally-closed contact seal in low pressure steam discharge measure sensor 3 with in the sensor measurement loop of amount of logic input card DI composition；Logic
The outfan of amount output card DO seals in high pressure steam discharge by the normally-closed contact of fault simulation relay k51, k52, k53 and measures biography
Sensor 2 and (as shown in Figure 2) in the sensor measurement loop of amount of logic input card DI composition.
Signal is delivered to triple channel rotating speed analog input card by cable by speed probe, and rotating speed analog card passes through comparator
Instruction being sent by output relay K11, K12, K13, relay K 11, the two secondary normally opened contacts of K12, K13 take back control respectively
Device processed or seal in three current supply circuits of actuator, the other two secondary normally opened contacts composition two from three tables of K11, K12, K13
Certainly extension loop, seals in the 4th current supply circuit of actuator, finally arrives executor.
Signal is delivered to triple channel amount of logic input card by cable by non-speed probe, and amount of logic input card is by number
According to bus, signal being delivered to redundant manipulator, execution instruction is sent after being decided by vote by logic two from three by redundant manipulator by bus
To four row execution passages to blocking actuator action, amount of logic output card, instruction is sent output relay by logic output card, defeated
Go out relay normally open contact.Output card passes through the normally opened contact string of relay side in the current supply circuit of blocking actuator 5
Formula is: four-way amount of logic output card DO is interdicting actuator 5 by the normally opened contact string of relay k21, k22, k23, k24
Current supply circuit in, finally arrive actuator (as shown in Figure 2).
Embodiment 2
As it is shown on figure 3, a kind of two from three voting, four take two hydraulic pressure blocking steam turbine protection device, including for measuring
The sensor of turbine parameters, input card, redundant manipulator 4, execution passage and blocking actuator 5, sensor and input card
Connecting, input card is connected with redundant manipulator 4, and redundant manipulator 4 is connected with performing passage, performs passage and passes through the normal of relay
Open contact to go here and there in the current supply circuit of blocking actuator 5, also include the analog circuit for analogue measurement sensor fault, institute
State analog circuit and include amount of logic output card DO and fault simulation relay, the input of amount of logic output card DO and redundancy control
Device processed connects, and the outfan of amount of logic output card DO seals in sensor measurement by the normally-closed contact of fault simulation relay and returns
Lu Zhong；Described blocking actuator be four take two hydraulic pressure blocking mechanism, perform passage be four row perform passages, each column passage bag
Including interconnective amount of logic output card DO and relay, amount of logic output card DO is connected with redundant manipulator, relay normal
Open contact to go here and there in four current supply circuits taking two hydraulic actuating mechanisms.
Sensor include rotating speed measuring sensor 1(its for the measurement of turbine speed), high pressure steam discharge measures sensor 2
(it is for the measurement of steam turbine high-pressure cylinder aerofluxus) and low pressure steam discharge measure sensor 3(, and it is used for turbine low pressure cylinder aerofluxus
Measure), and every kind of sensor is three, described input card includes analog signal input card AI and amount of logic input card DI, described
Rotating speed measuring sensor is connected with redundant manipulator by analog signal input card AI, and high pressure steam discharge measures sensor and low pressure steam discharge
Measure sensor to be connected with redundant manipulator by amount of logic input card DI respectively.The outfan of amount of logic output card DO passes through
The concrete mode that the normally-closed contact of fault simulation relay seals in sensor measurement loop is: amount of logic output card DO's is defeated
Go out end and seal in rotating speed measuring sensor 1 and analog signal input card by the normally-closed contact of fault simulation relay k31, k32, k33
In the sensor measurement loop of AI composition；The outfan of amount of logic output card DO passes through fault simulation relay k41, k42, k43
Normally-closed contact seal in low pressure steam discharge measure sensor 3 with in the sensor measurement loop of amount of logic input card DI composition；Logic
The outfan of amount output card DO seals in high pressure steam discharge by the normally-closed contact of fault simulation relay k51, k52, k53 and measures biography
Sensor 2 and (as shown in Figure 3) in the sensor measurement loop of amount of logic input card DI composition.
Signal is delivered to triple channel rotating speed analog input card by cable by speed probe, and rotating speed analog card passes through comparator
Instruction being sent by output relay K11, K12, K13, relay K 11, a secondary normally opened contact of K12, K13 take back control
Device, the other eight secondary normally opened contact composition two from three voting extension loop of K11, K12, K13, seal in four power supplies of actuator
In loop, finally arrive executor.(at example 1 and example 2 difference)
Signal is delivered to triple channel amount of logic input card by cable by non-speed probe, and amount of logic input card is by number
According to bus, signal being delivered to redundant manipulator, execution instruction is sent after being decided by vote by logic two from three by redundant manipulator by bus
To four row execution passages to blocking actuator action, amount of logic output card, instruction is sent output relay by logic output card, defeated
Go out relay normally open contact.Output card passes through the normally opened contact string of relay side in the current supply circuit of blocking actuator 5
Formula is: four-way amount of logic output card DO is interdicting actuator 5 by the normally opened contact string of relay k21, k22, k23, k24
Current supply circuit in, finally arrive actuator (as shown in Figure 3).
The logical relation of each equipment is:
For general on-the-spot logical signal, on-the-spot three sensor are sent to patrol after being measured by Steam Turbine Field status signal
Collecting after amount input card DI, amount of logic input card DI gather signal and be sent to redundant manipulator by network, redundant manipulator is carried out
After two from three voting, protection instruction is sent to amount of logic output card DO by network, finally takes two hydraulic actuating mechanisms to four and enter
Action is made, and completes steam turbine protection.
For tach signal, tach signal is passed to rotating speed card by spot sensor, and rotating speed card is by on-site signal
Reason, to performing after instruction is exported by relay and complete four row extensions, finally arrives actuator.
For simulated failure link, use charged action principle, even if simulation execution fault or relay fault, therefore not shadow
Ring the normal measurement of signal；Instruction is performed for output, uses dead electricity safety code.
One, overspeed protection is tested, decides by vote for hardware two from three, perform flow process as follows:
In the case of there is no speed probe fault, can test；
After selection is tested, when system starts test total, then perform the simulation of passage 1 sensor fault；
When analogue signal causes passage 1 rotating speed fault and to passage 1 test period timing, wait passage 1 output feedback；
As passage 1 does not feeds back to result of the test at the appointed time, terminate whole test and report testing failure；When passage 1
After feeding back at the appointed time, terminating passage 1 and test, after delay confirmation, trigger port two is tested.
Then the simulation of passage 2 sensor fault is performed；
When analogue signal causes passage 2 rotating speed fault and to passage 2 test period timing, wait passage 2 output feedback；
As passage 2 does not feeds back to result of the test at the appointed time, terminate whole test and report testing failure；When passage 2
After feeding back at the appointed time, terminating passage 2 and test, after delay confirmation, trigger port three is tested.
Then the simulation of passage 3 sensor fault is performed；
When analogue signal causes passage 3 rotating speed fault and to passage 3 test period timing, wait passage 3 output feedback；
As passage 3 does not feeds back to result of the test at the appointed time, terminate whole test and report testing failure；When passage 3
After feeding back at the appointed time, terminating passage 3 and test, and terminate whole test, test is declared successfully.
Specifying in total duration, three tests are recognized and are not fully complete, and terminate test.(as shown in Figure 4, Figure 5).
Two, signal is protected for other, it is desirable to accomplish that the test of two from three logical links is done in components and parts equipment and requirement, stream
Journey is as follows:
When without sensor all faults, user can select to perform test, starts to perform test.
After selection is tested, when system starts test total.
Then performing the simulation of passage 1 sensor fault, and software simulation second channel fault, logic performs two from three and jumps
Machine；Shield the instruction output of non-1 passage, allow 1 passage executor's action；
As passage 1 does not feeds back to result of the test at the appointed time, terminate whole test and report testing failure；When passage 1
After feeding back at the appointed time, terminating passage 1 and test, after delay confirmation, trigger port two is tested.
Then performing the simulation of passage 2 sensor fault, and software simulation third channel fault, logic performs two from three and jumps
Machine；Shield the instruction output of non-2 passages, allow 2 passage executor's actions；
As passage 2 does not feeds back to result of the test at the appointed time, terminate whole test and report testing failure；When passage 2
After feeding back at the appointed time, terminating passage 2 and test, after delay confirmation, trigger port three is tested.
Then performing the simulation of passage 3 sensor fault, and a channel failure simulated by software, logic performs two from three chaser；
Shield the instruction output of non-3 passages, allow 3 passage executor's actions；
As passage 3 does not feeds back to result of the test at the appointed time, terminate whole test and report testing failure；When passage 3
After feeding back at the appointed time, terminating passage 3 and test, after delay confirmation, trigger port four is tested.
Perform passage 4 to test, direct trigger port four actuator action；
As passage 4 does not feeds back to result of the test at the appointed time, terminate whole test and report testing failure；When passage 4
After feeding back at the appointed time, terminate test, test successfully after delay confirmation.
Specifying in total duration, four Channel Tests are recognized and are not fully complete, and terminate test (as shown in Figure 6).
Claims (4)
1. two from three voting, four take two hydraulic pressure blocking a steam turbine protection device, including for measuring turbine parameters
Sensor, input card, redundant manipulator, execution passage and blocking actuator, sensor is connected with input card, and input card is with superfluous
Remaining controller connects, and redundant manipulator is connected with performing passage, execution passage string in the current supply circuit interdicting actuator, its
It is characterised by: also include that the analog circuit for analogue measurement sensor fault, described analog circuit include amount of logic output card
(DO) with fault simulation relay, the input of amount of logic output card (DO) is connected with redundant manipulator, amount of logic output card
(DO) outfan is sealed in sensor measurement loop by the normally-closed contact of fault simulation relay；Described blocking performs
Mechanism be four take two hydraulic pressure blocking mechanism, described execution passage be four row perform passages, each column passage includes interconnective patrolling
Collecting amount output card and relay, amount of logic output card is connected with redundant manipulator, and the normally opened contact string of relay takes two liquid four
In the current supply circuit of pressure actuator.
Two from three the most according to claim 1 voting, four take two hydraulic pressure blocking steam turbine protection device, its feature exists
In: four row perform in passage, and wherein the relay normally open contact of string execution passage is taken four by two from three voting loop string
In the current supply circuit of two hydraulic actuating mechanisms.
Two from three the most according to claim 1 voting, four take two hydraulic pressure blocking steam turbine protection device, its feature exists
In: four row perform in passage, and each column performs the relay normally open contact of passage and takes two liquid by two from three voting loop string four
In the current supply circuit of pressure actuator.
Two from three the most according to claim 1 voting, four take two hydraulic pressure blocking steam turbine protection device, its feature exists
In: described sensor includes that rotating speed measuring sensor (1), high pressure steam discharge measure sensor (2) and low pressure steam discharge measures sensor
(3), described input card includes analog signal input card (AI) and amount of logic input card (DI), described rotating speed measuring sensor (1)
Being connected with redundant manipulator by analog signal input card (AI), high pressure steam discharge measures sensor (2) and low pressure steam discharge measures sensing
Device (3) is connected with redundant manipulator by amount of logic input card (DI) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620672032.0U CN205744012U (en) | 2016-06-30 | 2016-06-30 | A kind of two from three voting, four take two hydraulic pressure blocking steam turbine protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620672032.0U CN205744012U (en) | 2016-06-30 | 2016-06-30 | A kind of two from three voting, four take two hydraulic pressure blocking steam turbine protection device |
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| Publication Number | Publication Date |
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| CN205744012U true CN205744012U (en) | 2016-11-30 |
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ID=57379275
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620672032.0U Withdrawn - After Issue CN205744012U (en) | 2016-06-30 | 2016-06-30 | A kind of two from three voting, four take two hydraulic pressure blocking steam turbine protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909324A (en) * | 2016-06-30 | 2016-08-31 | 四川东方电气自动控制工程有限公司 | 3-2 voting and 4-2 hydraulic shielding steam turbine protection device |
| WO2021098332A1 (en) * | 2019-11-18 | 2021-05-27 | 南京科远智慧科技集团股份有限公司 | Automatic inspection method applied to triply-redundant overspeed protection device |
-
2016
- 2016-06-30 CN CN201620672032.0U patent/CN205744012U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909324A (en) * | 2016-06-30 | 2016-08-31 | 四川东方电气自动控制工程有限公司 | 3-2 voting and 4-2 hydraulic shielding steam turbine protection device |
| CN105909324B (en) * | 2016-06-30 | 2017-11-07 | 四川东方电气自动控制工程有限公司 | Two from three voting, four take the steam turbine protection device that two hydraulic pressure interdict |
| WO2021098332A1 (en) * | 2019-11-18 | 2021-05-27 | 南京科远智慧科技集团股份有限公司 | Automatic inspection method applied to triply-redundant overspeed protection device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161130 Effective date of abandoning: 20171107 |
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| AV01 | Patent right actively abandoned |