CN101447659A - Fault alarm device and switchboard - Google Patents
Fault alarm device and switchboard Download PDFInfo
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- CN101447659A CN101447659A CNA2008102413662A CN200810241366A CN101447659A CN 101447659 A CN101447659 A CN 101447659A CN A2008102413662 A CNA2008102413662 A CN A2008102413662A CN 200810241366 A CN200810241366 A CN 200810241366A CN 101447659 A CN101447659 A CN 101447659A
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- fault alarm
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- voltage direct
- relay
- switch
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Abstract
The invention provides a fault alarm device which is suitable for the field of power distribution. The device comprises a low-voltage direct-current fault alarm circuit; the low-voltage direct-current fault alarm circuit comprises a relay for controlling alarm and an aircraft plug with one end connected with the relay; and a normally open switch controlled by the relay connected in series in a low-voltage direct-current protective circuit is arranged between two end points of the aircraft plug. The device further comprises an isolating corresponding switch connected in series in the low-voltage direct-current fault alarm circuit. In the embodiment of the invention, through adding the isolating corresponding switch in the low-voltage direct-current fault alarm circuit, when a power circuit breaker is required to be isolated, the isolating corresponding switch is unloosened, so as to enable the low-voltage direct-current fault alarm circuit to be broken, thereby avoiding damage to a screw socket and a pinhead caused by repeated insertion of the aircraft plug, as well as switch misoperation or malfunction caused by the poor contact of the plug. Furthermore, the invention does not need to change an original design function, and has the advantages of simple operation, convenient and flexible use and strong applicability.
Description
Technical field
The invention belongs to the power distribution field, relate in particular to a kind of accident warning device and distribution board.
Background technology
The power loop circuit breaker that links to each other with a certain upstream device in the nuclear power station medium-voltage distribution dish is when the isolated location at present, and this upstream device is in down state, after the protection loop of distribution board detects this fault, sends failure alarm signal to main control room.At this moment; if when similar operations or other fault take place other upstream device again, alarm signal after detecting corresponding failure, is sent to main control room equally in the protection loop of distribution board; because warning system is a bus system, a plurality of alarm signals will cause signal jam.For fear of signal jam, prior art is when isolating the power loop circuit breaker, need extract the aviation plug that links to each other with the relay of control warning on the distribution board simultaneously, and aviation plug is not an executive component, the plug meeting makes screw socket and syringe needle damaged repeatedly, may cause the malfunction or the tripping of switch when the plug loose contact.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of accident warning device, be intended to solve prior art when the power loop circuit breaker is isolated, need extract the aviation plug that links to each other with the relay of control warning on the distribution board simultaneously, plug makes screw socket and syringe needle damaged repeatedly, and the problem that may cause the malfunction or the tripping of switch when the plug loose contact.
The embodiment of the invention is to realize like this; a kind of accident warning device; comprise a low-voltage direct fault alarm loop; described low-voltage direct fault alarm loop comprises the relay of control warning and the aviation plug that an end is connected with described relay; be connected with one between the two-end-point of described aviation plug by the normal open switch that is connected on the relay control in the low-voltage direct protection loop, described device comprises that further one is series at isolation in the described low-voltage direct fault alarm loop to inductive switch.
Another purpose of the embodiment of the invention is to provide a kind of distribution board; comprise an accident warning device and Medium voltage switch or circuit breaker dish; wherein; accident warning device further comprises a low-voltage direct fault alarm loop; described low-voltage direct fault alarm loop comprises the relay of control warning and the aviation plug that an end is connected with described relay; be connected with one between the two-end-point of described aviation plug by the normal open switch that is connected on the relay control in the low-voltage direct protection loop, described device comprises that further one is series at isolation in the described fault alarm loop to inductive switch.
In the embodiment of the invention, isolate inductive switch by in direct current fault alarm loop, adding one, when needs are isolated the power loop circuit breaker, to isolate earlier inductive switch will be untied, so that direct current fault alarm loop disconnects, thus screw socket and the syringe needle damaged of having avoided the plug repeatedly of aviation plug to cause, and the switch malfunction or the tripping that when the plug loose contact, may cause, it need not to change former design function, and simple to operate, easy to use flexible, applicability is strong.
Description of drawings
Fig. 1 is the principle assumption diagram of the accident warning device that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention, in direct current fault alarm loop, add one and isolate, when needs are isolated the power loop circuit breaker, will isolate earlier inductive switch is untied,, avoided the plug of aviation plug so that direct current fault alarm loop disconnects to inductive switch.
Fig. 1 shows the theory structure of the accident warning device that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
In the distribution board 12; low-voltage direct fault alarm loop comprises the relay J 2 of a control warning that links to each other with power cathode and the aviation plug that an end is connected with relay J 2; be connected with one between the two-end-point of aviation plug by the normal open switch that is connected on relay J 1 control in the low-voltage direct protection loop, the other end of aviation plug links to each other with positive source to inductive switch by isolating.
Wherein, isolate the interface unit or the switch that can adopt existing multiple control buffer action to inductive switch, in embodiments of the present invention, isolate inductive switch is adopted a connecting piece 121.In addition, this is isolated inductive switch when the specific implementation, can also be connected in the arbitrary place in the low-voltage direct fault alarm loop, as be connected between the normal open switch of relay J 1 control and the aviation plug etc., and this isolation places outside the Medium voltage switch or circuit breaker dish (not shown) low pressure cell of distribution board 12 inductive switch.
In embodiments of the present invention, the 48V DC power supply is adopted in low-voltage direct fault alarm loop, and the 125V DC power supply is adopted in low-voltage direct protection loop.During specific implementation, existing other low-voltage dc power supply power supply can be adopted in low-voltage direct fault alarm loop and low-voltage direct protection loop.
When needs are connected in power loop circuit breaker Q S between upstream device 11 and the electrical source of power 13 when isolating, earlier brace 121 is untied, make low-voltage direct fault alarm loop disconnect.At this moment, as power loop circuit breaker Q S during in the isolated location, upstream device 11 is in down state, thereby cause relay J 1 dead electricity, normal open switch closure by its control, owing to brace 121 is untied, low-voltage direct fault alarm loop is in off-state all the time, in fact normal open switch closed invalid that causes relay J 1 control, make relay J 2 be failure to actuate, thereby be failure to actuate by the respective switch in the alarm unit 141 in the master-control room 14 of these relay J 2 controls, reporting to the police can not appear in master-control room 14.
In addition, in the embodiment of the invention, for low-voltage direct protection loop and low-voltage direct fault alarm loop, following table shows its alarm circuit design:
| Sequence number | Symbol | Title | Contact | Alarm | Warning reason | |
| 1 | K3 | The test plug auxiliary contact | Disconnect | Bright | Switch test | |
| 2 | K4 | The sulfur hexafluoride gas press contact | Disconnect | Bright | Sulfur hexafluoride gas pressure is low | |
| 3 | K5 | Protection exit relay contact | Disconnect | Bright | The protection action | |
| 4 | K6 | Switch over travel monitors contact | Disconnect | Bright | Switch is not shifted the position onto | |
| 5 | K7 | The switch snap close contact that puts in place | Disconnect | Bright | Switch puts in place does not have snap close | |
| 6 | K1 | Warning exit relay contact | Disconnect | Do not work | Closing circuit is intact |
As seen from the above table, when circuit breaker closing lock handle hand during in the UNBLOCK position, K6 disconnects; When killer switch does not put in place, when the snap close contact did not trigger, K7 disconnected; When sulphur hexafluoride was reported to the police, K4 disconnected; When overload or overcurrent protection action, K5 disconnects.Above situation all can cause relay J 1 dead electricity, causes the normal open switch closure by its control.Above fault alarm can be divided into following two classes:
1) switch fault (accident) is reported to the police, and directly reflects switch or loop fault;
2) the switch supervisory signal is reported to the police, and is mainly monitoring switch and operates and be provided with.
Therefore; in the embodiment of the invention; after sending electricity, need in time brace 121 to be connected; to avoid losing supervision to switch fault; particularly after the action of the low or switch protection of sulphur hexafluoride pressure appears in switch; if master-control room 14 can not send alarm signal, then can only judge by inspection on the scene and other phenomenon, incur loss through delay fault handling time.In addition, in time brace 121 is connected and to avoid correctly to judge whether switch is operated puts in place, when removing isolation, switch not operation puts in place, at this moment, if brace 121 does not connect, master-control room 14 just can not send alarm signal, may cause this upstream device 11 to be in down state for a long time.
In the embodiment of the invention, isolate inductive switch by in direct current fault alarm loop, adding one, when needs are isolated the power loop circuit breaker, to isolate earlier inductive switch will be untied, so that low-voltage direct fault alarm loop disconnects, thus screw socket and the syringe needle damaged of having avoided the plug repeatedly of aviation plug to cause, and the switch malfunction or the tripping that when the plug loose contact, may cause, it need not to change former design function, and simple to operate, easy to use flexible, applicability is strong.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of accident warning device; comprise a low-voltage direct fault alarm loop; described low-voltage direct fault alarm loop comprises the relay of control warning and the aviation plug that an end is connected with described relay; be connected with one between the two-end-point of described aviation plug by the normal open switch that is connected on the relay control in the low-voltage direct protection loop; it is characterized in that described device comprises that further one is series at isolation in the described low-voltage direct fault alarm loop to inductive switch.
2, accident warning device as claimed in claim 1 is characterized in that, described isolation is a brace to inductive switch.
3, accident warning device as claimed in claim 2 is characterized in that, the positive source in described fault alarm loop is connected with an end of described brace, and the other end of described brace links to each other with the other end of described aviation plug; The power cathode in described fault alarm loop is connected with the relay that described control is reported to the police.
4, accident warning device as claimed in claim 1 is characterized in that, 48V direct current supply is adopted in described low-voltage direct fault alarm loop.
5, accident warning device as claimed in claim 1 is characterized in that, 125V direct current supply is adopted in described low-voltage direct protection loop.
6, a kind of distribution board; comprise an accident warning device and Medium voltage switch or circuit breaker dish; wherein; accident warning device further comprises a low-voltage direct fault alarm loop; described low-voltage direct fault alarm loop comprises the relay of control warning and the aviation plug that an end is connected with described relay; be connected with one between the two-end-point of described aviation plug by the normal open switch that is connected on the relay control in the low-voltage direct protection loop; it is characterized in that described device comprises that further one is series at isolation in the described fault alarm loop to inductive switch.
7, distribution board as claimed in claim 6 is characterized in that, described isolation is a brace to inductive switch.
8, distribution board as claimed in claim 7 is characterized in that, the positive source in described fault alarm loop is connected with described brace, and the other end of described brace links to each other with the other end of described aviation plug; The power cathode in described fault alarm loop is connected with the relay that described control is reported to the police.
As claim 7 or 8 described distribution boards, it is characterized in that 9, described brace is installed in the described Medium voltage switch or circuit breaker dish low pressure cell outside.
10, distribution board as claimed in claim 6 is characterized in that, 125V direct current supply is adopted in described low-voltage direct protection loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102413662A CN101447659B (en) | 2008-12-22 | 2008-12-22 | Fault alarm device and switchboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102413662A CN101447659B (en) | 2008-12-22 | 2008-12-22 | Fault alarm device and switchboard |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110304830.XA Division CN102368595B (en) | 2008-12-22 | 2008-12-22 | Nuclear power station distribution board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101447659A true CN101447659A (en) | 2009-06-03 |
| CN101447659B CN101447659B (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102413662A Expired - Fee Related CN101447659B (en) | 2008-12-22 | 2008-12-22 | Fault alarm device and switchboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101447659B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE470414B (en) * | 1992-07-03 | 1994-02-14 | Asea Brown Boveri | Ventilavledaranordning |
| CN2150647Y (en) * | 1993-03-01 | 1993-12-22 | 谷恩荣 | Magnetic-starter for transient fault delay interruption of power system |
| CN2496148Y (en) * | 2001-08-30 | 2002-06-19 | 余孟达 | Intelligent power converter |
| CN2669204Y (en) * | 2003-09-22 | 2005-01-05 | 林建峰 | Line fault detection-control automatic alarming device |
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2008
- 2008-12-22 CN CN2008102413662A patent/CN101447659B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101447659B (en) | 2012-07-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA GENERAL NUCLEAR GROUP CO., LTD. Free format text: FORMER NAME: CHINA GUANGDONG NUCLEAR POWER GROUP CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Patentee after: DAYABAY NUCLEAR POWER OPERATIONS AND MANAGEMENT Co.,Ltd. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. Patentee before: DAYABAY NUCLEAR POWER OPERATIONS AND MANAGEMENT Co.,Ltd. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161026 Address after: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Patentee after: LINGDONG NUCLEAR POWER Co.,Ltd. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee before: CHINA GENERAL NUCLEAR POWER Corp. Patentee before: DAYABAY NUCLEAR POWER OPERATIONS AND MANAGEMENT Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20211222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |