CN205016257U - Modified is used for low control system who jumps pump protection of nuclear power station outlet pressure - Google Patents
Modified is used for low control system who jumps pump protection of nuclear power station outlet pressure Download PDFInfo
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- CN205016257U CN205016257U CN201520752659.2U CN201520752659U CN205016257U CN 205016257 U CN205016257 U CN 205016257U CN 201520752659 U CN201520752659 U CN 201520752659U CN 205016257 U CN205016257 U CN 205016257U
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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
The utility model discloses a modified is used for low control system who jumps pump protection of nuclear power station outlet pressure, including pressure switch, normally closed relay contact, first relay and auxiliary relay, auxiliary relay includes coil and contact, and wherein, pressure switch is connected the first branch road of constitution with auxiliary relay's coil, and auxiliary relay's contact, normally closed relay contact and first relay are established ties in proper order and is constituteed the second branch road, first branch road and second branch road parallel connection. Through the utility model provides a control system through increase an auxiliary relay on the blowback way is jumped to the low B row of jumping the pump protection of outlet pressure, makes that the electric charge of accumulation releases in the cable in this auxiliary relay's coil, and not direct action in first relay to jump pump hidden danger has been eliminated. After the scrap build installation, carried out function evaluation test again according to the designing requirement, the B row jump blowback way after the transformation is in proper working order, the undulant problem of recurrence relay coil voltage mistake.
Description
Technical field
The utility model relates to technical field of nuclear power, particularly relates to a kind of control system for the low jumping pump protection of nuclear power station top hole pressure of improvement.
Background technology
When Daya Gulf No. 2 machine secondary circuit feed pumps start, can there are unusual fluctuations in the voltage at the relay coil two ends that the low jumping blowback road B of its top hole pressure arranges, therefore there is the potential risk of false tripping pump.
Figure 1 shows that on February 5th, 2009 jumps three unusual fluctuations of the relay D2APP219XR coil both end voltage that pump signal monitoring registering instrument finds by inquiry Daya Gulf No. 2 machine feed pump D2APP202PO pumps, tertiary wave emotionally condition is as follows respectively, between crest and trough, the time (semiperiod) is between 4-5ms, and whole wave process is at about 30ms.
1) 9:31:05, crest 9.7V, trough-10.37V;
2) 9:36:37, crest 14.15V, trough-12.95V;
3) 9:41:22, crest 10.20V, trough-11.27V;
Figure 2 shows that the B row of secondary circuit feed pump (D2APP202PO) of the prior art jump the schematic diagram of the control system 200 on blowback road.As shown in Figure 2, control system 100 comprises pressure switch 210 (i.e. pressure switch D2APP201SP), normally closed relay contact 220 (i.e. relay D2APP212XR) and the first relay 230 (i.e. relay D2APP219XR).Through site inspection and eliminating, find that in the control cables wire casing of the first relay 230 (i.e. relay D2APP219XR) stream signal transmission, dynamic cable passes through, cause this control cables to produce induced voltage, and then affect the normal work of the first relay 230.By analysis, basic reason is that cable between from pressure switch 210 (i.e. pressure switch D2APP201SP) to normally closed relay contact 220 (i.e. relay D2APP212XR) exists alternating voltage.Therefore, when normally closed relay contact 220 (i.e. relay D2APP212XR) is closed, the electric charge accumulated cable between from pressure switch 210 (i.e. pressure switch D2APP201SP) to normally closed relay contact 220 (i.e. relay D2APP212XR) is discharged by the first relay 230 (i.e. relay D2APP219XR), thus causes the voltage of the first relay 230 (i.e. relay D2APP219XR) to occur unusual fluctuations.Because therefore this alternating voltage by manually removing, cannot need a kind of control system for the low jumping pump protection of nuclear power station top hole pressure of improvement.
Utility model content
The purpose of this utility model is the control system for the low jumping pump protection of nuclear power station top hole pressure providing a kind of improvement; the voltage fluctuation at the relay coil two ends arranged with the low jumping blowback road B of the top hole pressure eliminating secondary circuit feed pump, and then eliminate the potential risk of false tripping pump.
The utility model is in order to solve the problems of the technologies described above; the technical scheme adopted is: a kind of control system for the low jumping pump protection of nuclear power station top hole pressure of improvement; comprise pressure switch, normally closed relay contact, the first relay and auxiliary reclay; auxiliary reclay comprises coil and contact; wherein; pressure switch is connected with the coil of auxiliary reclay composition first branch road; the contact of auxiliary reclay, normally closed relay contact and the first relay are composed in series the second branch road successively, and the first branch road is connected with the second branch circuit parallel connection.
Preferably, the supply voltage of auxiliary reclay is the DC voltage of 125v or 48v or 24v.
Preferably, the contact of auxiliary reclay is chosen as Chang Kaifang formula.
Implement the control system embodiment for the low jumping pump protection of nuclear power station top hole pressure of improvement of the present utility model; there is following beneficial effect: the control system for the low jumping pump protection of nuclear power station top hole pressure of a kind of improvement provided by the utility model; an auxiliary reclay is increased by jumping on blowback road at the B row of the low jumping pump protection of top hole pressure; the electric charge accumulated in cable is discharged in the coil of this auxiliary reclay; and do not directly act in the first relay, thus eliminate jumping pump hidden danger.After scrap build installation, carried out function design test again according to designing requirement, it is working properly that improved B row jump blowback road, the problem that relay coil voltage fluctuates by mistake do not occur again, efficiently solves the jumping pump hidden danger that this is potential.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1 shows that the unusual fluctuations of relay D2APP219XR coil both end voltage;
Figure 2 shows that the schematic diagram for the control system of the low jumping pump protection of nuclear power station top hole pressure in prior art;
Figure 3 shows that the schematic diagram of the control system for the low jumping pump protection of nuclear power station top hole pressure of a kind of improvement that the utility model provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Figure 3 shows that the schematic diagram of the control system for the low jumping pump protection of nuclear power station top hole pressure of a kind of improvement that the utility model provides.As shown in Figure 3, the control system 300 for the low jumping pump protection of nuclear power station top hole pressure after improvement comprises pressure switch 310 (i.e. pressure switch D2APP201SP), normally closed relay contact 320 (i.e. relay D2APP212XR), the first relay 330 (i.e. relay D2APP219XR) and auxiliary reclay 340 (i.e. relay D2APP290XR).Auxiliary reclay 340 comprises coil 342 and contact 344.Wherein, pressure switch 310 is connected with the coil 342 of auxiliary reclay 340 composition first branch road, the contact 344 of auxiliary reclay 340, normally closed relay contact 320 and the first relay 330 are composed in series the second branch road successively, and the first branch road is connected with the second branch circuit parallel connection.
Preferably, in the utility model one embodiment, the supply voltage of auxiliary reclay 340 is the DC voltage of 125v or 48v or 24v.
In the utility model one embodiment, the contact 344 of auxiliary reclay 340 is chosen as Chang Kaifang formula, when namely not having electric current to pass through in circuit, contact 344 is open mode, and pressure switch 310 is when closing, under the effect of induced voltage, contact 344 is reversed to closure state by normally open, make to be accumulated in pressure switch 310 to be discharged to the induced voltage in the cable in normally closed relay contact 320 by auxiliary reclay 340, thus avoid the voltage fluctuation caused in the first relay 330, realize the target of release undesired signal.
In the utility model one embodiment, after reforming equipment installation works on power, function design test has again been carried out according to designing requirement, signal measurement and record are carried out to the former control cables that there is undesired signal, judge that the undesired signals such as original induced potential have been eliminated, and design test is carried out to the function in loop, do not affect steering logic and the response time in original loop after determining to increase auxiliary reclay, achieve the target meeting circuit controls logic.
The control system for the low jumping pump protection of nuclear power station top hole pressure of a kind of improvement that the utility model provides; an auxiliary reclay is increased by jumping on blowback road at the B row of the low jumping pump protection of top hole pressure; the electric charge accumulated in cable is discharged in the coil of this auxiliary reclay; and do not directly act in the first relay, thus eliminate jumping pump hidden danger.After scrap build installation, carried out function design test again according to designing requirement, it is working properly that improved B row jump blowback road, the problem that relay coil voltage fluctuates by mistake do not occur again, efficiently solves the jumping pump hidden danger that this is potential.
Above disclosedly be only a kind of preferred embodiment of the utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the control system for the low jumping pump protection of nuclear power station top hole pressure improved, it is characterized in that, comprise pressure switch (310), normally closed relay contact (320), first relay (330) and auxiliary reclay (340), auxiliary reclay (340) comprises coil (342) and contact (344), wherein, pressure switch (310) is connected with the coil (342) of auxiliary reclay (340) composition first branch road, the contact (344) of auxiliary reclay (340), normally closed relay contact (320) and the first relay (330) are composed in series the second branch road successively, first branch road is connected with the second branch circuit parallel connection.
2. control system according to claim 1, is characterized in that, the supply voltage of auxiliary reclay (340) is the DC voltage of 125v or 48v or 24v.
3. control system according to claim 1, is characterized in that, the contact (344) of auxiliary reclay (340) is chosen as Chang Kaifang formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520752659.2U CN205016257U (en) | 2015-09-25 | 2015-09-25 | Modified is used for low control system who jumps pump protection of nuclear power station outlet pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520752659.2U CN205016257U (en) | 2015-09-25 | 2015-09-25 | Modified is used for low control system who jumps pump protection of nuclear power station outlet pressure |
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| Publication Number | Publication Date |
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| CN205016257U true CN205016257U (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520752659.2U Active CN205016257U (en) | 2015-09-25 | 2015-09-25 | Modified is used for low control system who jumps pump protection of nuclear power station outlet pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-09-25 CN CN201520752659.2U patent/CN205016257U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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