CN102402230B - Liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system - Google Patents
Liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system Download PDFInfo
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- CN102402230B CN102402230B CN201110385798.2A CN201110385798A CN102402230B CN 102402230 B CN102402230 B CN 102402230B CN 201110385798 A CN201110385798 A CN 201110385798A CN 102402230 B CN102402230 B CN 102402230B
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Abstract
The invention discloses a kind of for the liquid level controlling system in the nuclear power station carbonated drink reheating piece-rate system of detection and control liquid level.Liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system of the present invention comprises gets few mimic channel more, and it receives the multi-way level original analog exported by fluid level transmitter, exports traditional regulation simulating signal; Comprise at least one standby and regulate protection path, every bar standby regulates protection path have level threshold converter and export interlock protection logical signal; Every bar standby regulates protection path in parallel with getting few mimic channel more, to receive the liquid level original analog exported by fluid level transmitter, and is changed by its level threshold converter.In liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system of the present invention, even if get few mimic channel to export inefficacy, standby regulates protection path also can export effective interlock protection logical signal more.
Description
Technical field
The present invention relates to a kind of in power house for the liquid level controlling system in the nuclear power station carbonated drink reheating piece-rate system of detection and control liquid level.
Background technology
Need to use liquid level controlling system in power house, such as, in the carbonated drink reheating piece-rate system of nuclear power station, very high to the requirement of liquid level controlling, because under some transient operation operating mode, liquid level change, than very fast, easily cause the traditional regulation failure of liquid level controlling system, now needs the urgent regulatory function employed in liquid level controlling system.
The occasion needing control liquid level controlling as shown in Figure 1, adopts three fluid level transmitters 001MN, 002MN, 003MN to carry out level sensing; Adopt control valve 001VL and 002VL for regulating water level.
Be connected on existing liquid level controlling system between fluid level transmitter and control valve as shown in Figure 2, three are adopted to get two mimic channels, it receives the three tunnel liquid level original analog that three fluid level transmitters 001MN, 002MN, 003MN export, to reduce the measuring error of single transmitter, the traditional regulation simulating signal needed for output.Liquid level controlling system is provided with three (also can be other quantity) standby and regulates protection path, every bar standby regulates the interlock protection logical signal needed for the output of protection path, Article 1, standby regulates in protection path and is provided with level threshold converter L1, for judging first threshold value whether current level reaches default; Article 2 standby regulates in protection path and is provided with level threshold converter L2, for judging second threshold value whether current level reaches default; Article 3 standby regulates in protection path and is provided with level threshold converter L3, for judging the 3rd threshold value whether current level reaches default.Traditional regulation simulating signal and interlock protection logical signal trigger the action of control valve 001VL and/or 002VL, and wherein, traditional regulation simulating signal is for carrying out the traditional regulation of liquid level, and interlock protection logical signal is used for carrying out interlock protection.In Fig. 2, fluid level transmitter can change employing two, other quantity such as four, five into, and correspondingly, three get two mimic channels also can change two into and get one, four and get three, five and get third-class other and get few mechanism more.
In liquid level controlling system, three get two mimic channels is often attached with deviation and exceeds the quata inefficacy mechanism, in order to avoid the correctness of abnormal signal input impact output signal, such as, three analog quantitys inputted are got two mimic channel inside three and are averaged and draw a mean value, three analog quantitys inputted all follow mean value to compare calculation deviation: if having and only have one of them deviation off-rating, then think that corresponding this is input as exception and abandons, get two from three and be degenerated to that two-way input do not exceeded the quata with deviation and carry out two and get one; If there is two or more deviation off-rating, then this three get two mimic channels export lost efficacy.In practice, if make the deviation of two fluid level transmitters exceed parameters than the reason such as very fast because of liquid level change, then three get two mimic channels and export and will lose efficacy, this means in fig. 2 can not export effective traditional regulation simulating signal; Further, because the standby in Fig. 2 regulates protection paths connected in series after simulation two-out-of-three circuit, so standby regulates the output of protection path also to lose efficacy immediately.Visible, in the liquid level controlling system shown in Fig. 2, as long as cause three to get two mimic channels by some reason export inefficacy, standby regulates the output of protection path also can lose efficacy, and just thoroughly loses water level regulatory function so in an emergency situation.
Summary of the invention
The object of the invention is to: provide the liquid level controlling system in a kind of nuclear power station carbonated drink reheating piece-rate system, even if ensure that get few mimic channel exports inefficacy more, standby regulates protection path also can export effective interlock protection logical signal.
In order to realize foregoing invention object, the invention provides the liquid level controlling system in a kind of nuclear power station carbonated drink reheating piece-rate system, comprise and get few mimic channel more, it receives the multi-way level original analog exported by fluid level transmitter, exports traditional regulation simulating signal; Comprise at least one standby and regulate protection path, every bar standby regulates protection path have level threshold converter and export interlock protection logical signal; Wherein, every bar standby regulates protection path in parallel with getting few mimic channel more, to receive the liquid level original analog exported by fluid level transmitter, and is changed by its level threshold converter.
Because what standby regulated protection path to receive is the liquid level original analog that fluid level transmitter exports; but not the traditional regulation simulating signal exported after getting few mimic channel more; even if so between the multi-way level original analog exported due to such as fluid level transmitter deviation exceed get more few mimic channel the reasons such as receptible degree; cause getting few mimic channel more and export inefficacy; standby regulates protection path also can receive effective input, thus exports effective interlock protection logical signal.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the present invention and Advantageous Effects thereof in detail.
Fig. 1 is the schematic diagram needing the occasion of liquid level controlling in nuclear power station carbonated drink reheating piece-rate system.
Fig. 2 is the liquid level controlling circuit system block diagram in existing nuclear power station carbonated drink reheating piece-rate system.
Fig. 3 is the circuit block diagram of the liquid level controlling system embodiment in nuclear power station carbonated drink reheating piece-rate system of the present invention.
Embodiment
Be connected on liquid level controlling system in the nuclear power station carbonated drink reheating piece-rate system between fluid level transmitter and control valve as shown in Figure 3, three are adopted to get two mimic channels, it receives the three tunnel liquid level original analog that three fluid level transmitters 001MN, 002MN, 003MN export, the traditional regulation simulating signal needed for output.Three get two mimic channels is attached with deviation and exceeds the quata inefficacy mechanism.
Liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system is provided with three standby and regulates protection path.Every bar standby regulates protection path in parallel with getting few mimic channel more, receives the three tunnel liquid level original analog exported by fluid level transmitter.Article 1, standby regulates in protection path: (1) is provided with three level threshold converters L11, L12, L13 in parallel and receives three tunnel liquid level original analog respectively, these three level threshold converter threshold values are all first default threshold value, for judging whether current level reaches first threshold value; (2) be provided with three and get two logical circuits, change to receive three level threshold converters L11, L12, L13 the signal drawn, export the interlock protection logical signal needed for the first via.Similarly, Article 2 standby regulates in protection path and is also provided with three level threshold converters L21, L22, L23, for judging second threshold value whether current level reaches default, in this path three get two logical circuits exports interlock protection logical signal needed for the second tunnel; Article 3 standby regulates in protection path and is also provided with three level threshold converters L31, L32, L33; for judging the 3rd threshold value whether current level reaches default; the threshold value of tri-threshold transition phases of L31, L32, L33 is identical, and in this path three get the interlock protection logical signal of two logical circuits outputs needed for the 3rd tunnel.
When between the three tunnel liquid level original analog that fluid level transmitter 001MN, 002MN, 003MN export, deviation exceeds the quata, three get two mimic channels exports inefficacy, and now every bar standby regulates protection path to receive three tunnel liquid level original analog.Because deviation exceeds the quata to affect logical signal and exports between original analog, so every bar regulates protection path to get after two logics through threshold transition and three three tunnel liquid level original analog can export effective interlock protection logical signal.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (5)
1. the liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system, comprises and gets few mimic channel more, and it receives the multi-way level original analog exported by fluid level transmitter, exports traditional regulation simulating signal; Comprise at least one standby and regulate protection path, every bar standby regulates protection path have level threshold converter and export interlock protection logical signal; It is characterized in that: every bar standby regulate protection path with described more to get few mimic channel in parallel, to receive the liquid level original analog exported by fluid level transmitter, and changed by its level threshold converter.
2. the liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system according to claim 1, is characterized in that: get few mimic channel described is that two mechanism are got in simulation three more.
3. the liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system according to claim 1 and 2, is characterized in that: describedly more get few mimic channel and be attached with deviation and exceed the quata inefficacy mechanism.
4. the liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system according to claim 1 and 2; it is characterized in that: the liquid level original analog that the fluid level transmitter that described every bar standby regulates protection path to receive exports is multichannel, every bar standby regulates in protection path:
(1) described level threshold converter is multiple, and it has identical threshold value and parallel connection mutually, to receive the multi-way level original analog exported by described fluid level transmitter respectively;
(2) be provided with and get few logical circuit, the signal drawn with the multiple level threshold converters conversion receiving described parallel connection, the interlock protection logical signal described in output more.
5. the liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system according to claim 4, is characterized in that: get few logical circuit described is that logic three gets two mechanism more.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385798.2A CN102402230B (en) | 2011-11-29 | 2011-11-29 | Liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110385798.2A CN102402230B (en) | 2011-11-29 | 2011-11-29 | Liquid level controlling system in nuclear power station carbonated drink reheating piece-rate system |
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| CN102402230A CN102402230A (en) | 2012-04-04 |
| CN102402230B true CN102402230B (en) | 2016-01-06 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337267B (en) * | 2013-07-16 | 2016-06-29 | 中广核工程有限公司 | The drain valve of heater control method of nuclear power station, Apparatus and system |
| CN108916852B (en) * | 2018-05-18 | 2020-03-27 | 河南华润电力古城有限公司 | Logic protection method based on boiler drum liquid level |
| CN109060080B (en) * | 2018-08-21 | 2019-11-29 | 河南华润电力古城有限公司 | Logic detection method, apparatus, equipment and the storage medium of abnormal measuring signal |
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| CN1148721A (en) * | 1996-08-05 | 1997-04-30 | 王守川 | Safety system and recirculation control of safety casing spray system for nuclear power plant |
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| US20020014275A1 (en) * | 2000-08-04 | 2002-02-07 | Arch Specialty Chemicals, Inc. | Automatic refill system for ultra pure or contamination sensitive chemicals |
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| CN1694025A (en) * | 2005-04-28 | 2005-11-09 | 南京科远控制工程有限公司 | Automatic control system based on artificial intelligence for heat-engine plant |
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