CN114170764A - Oil leakage alarm for oil discharge valve of nitrogen-filled fire extinguishing device and alarm method thereof - Google Patents
Oil leakage alarm for oil discharge valve of nitrogen-filled fire extinguishing device and alarm method thereof Download PDFInfo
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- CN114170764A CN114170764A CN202111159322.7A CN202111159322A CN114170764A CN 114170764 A CN114170764 A CN 114170764A CN 202111159322 A CN202111159322 A CN 202111159322A CN 114170764 A CN114170764 A CN 114170764A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 31
- 230000007547 defect Effects 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 17
- 238000012423 maintenance Methods 0.000 claims description 14
- 230000001960 triggered effect Effects 0.000 claims description 6
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to the technical field of oil leakage of an oil drain valve of a nitrogen-filled fire extinguishing device of a transformer, and discloses an oil leakage alarm of the oil drain valve of the nitrogen-filled fire extinguishing device and an alarm method thereof, wherein the oil leakage alarm comprises an oil collector and an oil storage box, the oil collector is arranged below the oil drain valve in an oil drain pipe, the oil collector is connected with the oil storage box through a diversion trench, the oil collector collects oil leakage of the oil drain valve, and the oil storage box stores the oil leakage; the monitoring and triggering device comprises a measuring sensor and a signal converter, which are both arranged in the oil storage box, the measuring sensor and the signal sensor are electrically connected, the measuring sensor monitors the oil quantity in the oil storage box, and the signal converter converts an oil quantity analog signal into an electric signal to trigger alarm; the alarm device comprises a field alarm device and a remote alarm device and sends out an alarm signal to remind an operator. The invention adopts two-stage alarm mechanisms for complementation, and meets the requirements of real-time monitoring and timely alarming on the fixed fire extinguishing equipment of the transformer.
Description
Technical Field
The invention relates to an oil leakage alarm of an oil discharge valve of a nitrogen-filled fire extinguishing device and an alarm method thereof, belonging to the technical field of oil leakage of the oil discharge valve of the nitrogen-filled fire extinguishing device of a transformer.
Background
The oil discharge valve is a butterfly valve with simple structure, one side surface of the valve plate is contacted with transformer oil, the other side surface is contacted with air, and the rotation around the middle valve shaft achieves the control of opening and closing the oil discharge pipeline.
The oil discharge valve of the nitrogen-filled fire extinguishing device is normally closed, and because two sides of the oil discharge valve are contacted with two different media, namely oil and air, the sealing ring is easy to age, crack and even peel off, so that leakage is caused; in addition, in the actual use process, due to the influences of factors such as incomplete butterfly valve closing, large closing resistance and the like, a gap exists between the valve plate of the oil drain valve and the sealing valve body, and oil leakage is caused.
The existing nitrogen-filled fire extinguishing device has the current situations that oil leakage of an oil discharge valve is difficult to observe, a special protection device is not arranged, and oil leakage treatment lags behind, the existing method can only be used for manually monitoring the state of the oil discharge valve, and the existing method can not meet the requirements of real-time monitoring and timely alarming on fixed fire extinguishing equipment of a transformer when oil leakage faults are found. Therefore, the oil leakage alarm of the oil discharge valve of the nitrogen-filled fire extinguishing device and the alarm method thereof are needed to be designed, wherein the alarm can be monitored in real time and can give an alarm in time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an oil leakage alarm of an oil discharge valve of a nitrogen-filled fire extinguishing device and an alarm method thereof.
The invention relates to an oil leakage alarm of an oil drain valve of a nitrogen-filled fire extinguishing device, which comprises an oil collecting device, a triggering device and an alarm device, wherein:
the oil collecting device comprises an oil collector and an oil storage box, the oil collector is arranged below an oil discharge valve in the oil discharge pipe, the oil collector is connected with the oil storage box through a diversion trench, the oil collector collects oil leakage of the oil discharge valve, and the oil storage box stores the oil leakage;
the monitoring and triggering device comprises a measuring sensor and a signal converter, which are both arranged in the oil storage box, the measuring sensor and the signal sensor are electrically connected, the measuring sensor monitors the oil quantity in the oil storage box, and the signal converter converts an oil quantity analog signal into an electric signal to trigger alarm;
the alarm device comprises a field alarm device and a remote alarm device and sends out an alarm signal to remind an operator.
Preferably, the oil storage box includes oil storage box I and oil storage box II, and oil storage box I sets up inside the oil drain pipe, and oil storage box II sets up in the oil drain pipe outside, through honeycomb duct connection between oil storage box I and the oil storage box II.
Preferably, the measuring sensor comprises a floating ball liquid level sensor arranged in the oil storage box I and a photoelectric liquid level sensor arranged in the oil storage box II.
Preferably, the on-site alarm device adopts an internal-striking electric bell, the remote alarm device comprises a monitoring terminal, and the monitoring terminal acquires signals of the measuring sensor and displays the signals on a screen and synchronously displays the signals with the on-site alarm device.
Preferably, the oil storage box I is of a rectangular box-shaped structure; the oil storage box II is of a box-shaped structure with a semicircular side face.
The invention discloses an alarm method of an oil leakage alarm of an oil discharge valve of a nitrogen-filled fire extinguishing device, which comprises the following steps:
step S1: the oil collector collects oil leaked from the oil drain valve, and the oil collected in the oil collector is leaked to the oil storage box I through the flow guide groove;
step S2: when the measuring sensor monitors that the oil leakage in the oil storage box I reaches 108ml, the on-site alarm device inner-striking electric bell gives out alarm sound, meanwhile, a monitoring terminal of the remote alarm device displays a first-level alarm, and the monitoring terminal records the alarm sound;
step S3: if the oil leakage of the oil storage box II is detected to reach 108ml by the measuring sensor within three hours after the primary alarm is triggered, the on-site alarm device inner-striking electric bell gives an alarm sound, meanwhile, a monitoring terminal of the remote alarm device displays a secondary alarm, and the defect is judged to be a serious defect, the monitoring terminal sends defect information to a maintenance worker, and the maintenance worker needs to go to the on-site alarm device immediately to eliminate the defect;
if the oil leakage of the oil storage box II is monitored by the measuring sensor to reach 108ml more than three hours after the primary alarm is triggered, the inner-striking electric bell of the on-site alarm device gives an alarm sound, meanwhile, a monitoring terminal of the remote alarm device displays secondary alarm, the defect is judged to be a common defect, the monitoring terminal sends defect information to maintenance personnel, and the maintenance personnel can eliminate the defect by combining with a power failure plan.
The oil leakage alarm and the alarm method for the oil discharge valve of the nitrogen-filled fire extinguishing device have the following beneficial effects:
(1) the problems that oil leakage of the oil drain valve is difficult to observe and defect treatment is delayed can be effectively solved, and the reliability of fire-fighting equipment is improved;
(2) two alarm mechanisms with different principles are adopted, so that the severity of the defect can be judged, mutual complementation can be realized, backup protection is formed, and the reliability of the alarm device is enhanced;
(3) the method greatly shortens the discovery time of the oil leakage defect, and the operation and maintenance personnel can pertinently and reversely eliminate the defect according to the alarm condition, lays a foundation for the stable operation of the equipment, and has important significance for improving the power supply reliability and meeting the higher-quality power consumption requirement of users.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a plan view of the oil collector.
FIG. 3 is a block diagram of the two-stage alarm method of the present invention.
In the figure: 1. an oil discharge pipe; 2. an oil collector; 3. an oil storage box I; 4. an oil storage box II; 5. a diversion trench; 6. a floating ball liquid level sensor; 7. a flow guide pipe; 8. photoelectric liquid level sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 2, the oil leakage alarm of the oil drain valve of the nitrogen-filled fire extinguishing device comprises an oil collecting device, a triggering device and an alarm device, wherein:
the oil collector comprises an oil collector 2 and an oil storage box, the oil collector 2 is arranged below an oil discharge valve in the oil discharge pipe 1, the oil collector 2 is connected with the oil storage box through a flow guide groove 5, the oil collector 2 collects oil leakage of the oil discharge valve, and the oil storage box stores the oil leakage; the oil storage box comprises an oil storage box I3 and an oil storage box II 4, the oil storage box I3 is arranged inside the oil discharge pipe 1 and is positioned below the flow guide groove 5 of the oil collector 2, and the oil storage box I3 is of a cuboid box-shaped structure; oil storage box II 4 sets up in oil extraction pipe 1 outside, arrange in and fill in the nitrogen fire-extinguishing cabinet, the below that is located oil storage box I3 on the spatial position, oil catcher 2, oil storage box I3, the mode that oil storage box II 4 set up gradually downwards is convenient for the oil leak and is guided oil storage box I3 from oil catcher 2, treat that oil storage box I3 reaches the oil storage threshold value of settlement and guide oil storage box II 4, oil storage box II 4 is the semicircle form for the side, the cross section is the box structure of rectangle, be convenient for accomplish the collection and the storage to the oil drain valve oil leak.
The monitoring and triggering device comprises a measuring sensor and a signal converter, the measuring sensor and the signal converter are both arranged in the oil storage box and are electrically connected, the measuring sensor monitors the oil quantity in the oil storage box, the measuring sensor comprises a floating ball liquid level sensor 6 arranged in an oil storage box I3 and a photoelectric liquid level sensor 8 arranged in an oil storage box II 4, and the signal converter converts oil quantity analog signals collected by the floating ball liquid level sensor 6 and the photoelectric liquid level sensor 8 into electric signals which are sent to a field alarm device and a remote alarm device so as to trigger alarm; the floating ball liquid level sensor 6 is accurate in measurement, good in sensitivity, flexible in use and simple and convenient to maintain, and the oil discharge pipe 1 is arranged in the oil storage box II 4, so that dirt can be generated in the oil storage box II 4, sundries, sediments and the like can be generated in oil leakage, the photoelectric liquid level sensor 8 cannot influence the detection precision, the photoelectric liquid level sensor 8 is short in response time, and the alarm can be rapidly carried out.
The alarm device comprises a field alarm device and a remote alarm device and sends an alarm signal to remind an operator; the on-site alarm device adopts an internal striking electric bell, the remote alarm device comprises a monitoring terminal, and the monitoring terminal acquires signals of the measuring sensor and displays the signals on a screen and synchronously displays the signals with the on-site alarm device. Monitor terminal is including setting up equipment such as the measurement and control screen in the transformer substation, motion screen, backstage machine, adopts traditional cable with the liquid level signal transmission who measures the sensor and gather to observe and control screen or motion screen on, then sends alarm information through backstage machine and conveys for maintenance personal, adopts cable transmission, and stability is strong, signal reliability is high.
The volume of the oil storage box I3 and the volume of the oil storage box II 4 are both larger than 108ml, the oil storage box I3 and the oil storage box II 4 are connected through a guide pipe 7, and the guide pipe 7 is inserted into the oil storage box I3 and is positioned on a volume line of 3108ml of the oil storage box I.
Example 2:
as shown in FIG. 3, the alarm method of the oil leakage alarm of the oil drain valve of the nitrogen-filled fire extinguishing device comprises the following steps:
step S1: the oil collector 2 collects oil leaked from the oil drain valve, and the oil collector 2 collects the oil guided to the oil storage box I3 through the guide groove 5;
step S2: when a floating ball liquid level sensor 6 in a measuring sensor monitors that oil leakage in an oil storage box I3 reaches 108ml, an inner-beating electric bell of the on-site alarm device gives out alarm sound, a monitoring terminal of a remote alarm device displays primary alarm, and the monitoring terminal records the alarm sound; then, the oil leakage quantity of 108ml at a plurality of positions in the oil storage box I3 is guided into the oil storage box II 4 through the guide pipe 7;
step S3: if the photoelectric liquid level sensor 8 in the measuring sensor monitors that the oil leakage of the oil storage box II 4 reaches 108ml within three hours after the primary alarm is triggered, an internal striking electric bell of the on-site alarm device gives out an alarm sound, meanwhile, a monitoring terminal of the remote alarm device displays a secondary alarm, and the defect is judged to be a serious defect, the monitoring terminal sends defect information to a maintenance worker, and the maintenance worker needs to go to the on-site defect elimination;
if the photoelectric liquid level sensor 8 in the measuring sensor monitors that the oil leakage of the oil storage box II 4 reaches 108ml after the primary alarm is triggered for more than three hours, the inner impact electric bell of the on-site alarm device gives out an alarm sound, meanwhile, the monitoring terminal of the remote alarm device displays a secondary alarm, the defect is judged to be a common defect, the monitoring terminal sends defect information to maintenance personnel, and the maintenance personnel can eliminate the defect by combining with a power failure plan.
According to a standard defect library of transformer primary equipment 1.1 oil immersed transformer, in the definition of oil leakage: the oil drop speed is not faster than 5 seconds per drop, and the oil level is normal, which is a common defect; the oil drop speed is faster than 5 seconds per drop, and the oil level is normal, which is a serious defect; the oil leakage forms oil flow, the oil drop speed is faster than 5 seconds per drop, and the oil level is lower than the lower limit, which is a crisis defect.
Transformation equipment defect management Standard 7.3 Regulation for Defect management of transformation equipment: emergent defects are eliminated within twenty-four hours after discovery, and major defects are eliminated within one month after discovery. Typically defects are eliminated within three months after discovery or in conjunction with a blackout plan.
Therefore, the emergency defect needs to be eliminated within 24 hours, and the oil leakage alarm needs to send out an alarm signal within 6 hours by taking the distance of the transformer substation and the elimination time into consideration. If the oil drop speed is 5 seconds per drop and the volume of oil per drop is calculated according to 0.05mL, the oil leakage amount in 6 hours is 216mL, and therefore the secondary alarm target value is set as the sum of the oil output amounts of the two oil storage boxes and the oil output amount reaching 216 mL.
The invention can be widely applied to oil leakage occasions of the oil discharge valve of the nitrogen-filled fire extinguishing device of the transformer.
It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a fill nitrogen extinguishing device oil drain valve oil leak alarm, its characterized in that, including collection oil device, trigger device and alarm device, wherein:
the oil collecting device comprises an oil collector (2) and an oil storage box, wherein the oil collector (2) is arranged below an oil discharge valve in the oil discharge pipe (1), the oil collector (2) is connected with the oil storage box through a flow guide groove (5), the oil collector (2) collects oil leakage of the oil discharge valve, and the oil storage box stores the oil leakage;
the monitoring and triggering device comprises a measuring sensor and a signal converter, which are both arranged in the oil storage box, the measuring sensor and the signal sensor are electrically connected, the measuring sensor monitors the oil quantity in the oil storage box, and the signal converter converts an oil quantity analog signal into an electric signal to trigger alarm;
the alarm device comprises a field alarm device and a remote alarm device and sends out an alarm signal to remind an operator.
2. The nitrogen-filled fire extinguishing device oil drain valve oil leakage alarm device as defined in claim 1, wherein the oil storage box comprises an oil storage box I (3) and an oil storage box II (4), the oil storage box I (3) is arranged inside the oil drain pipe (1), the oil storage box II (4) is arranged outside the oil drain pipe (1), and the oil storage box I (3) and the oil storage box II (4) are connected through a flow guide pipe (7).
3. The oil leakage alarm of the oil drain valve of the nitrogen-filled fire extinguishing device according to claim 1, wherein the measuring sensor comprises a floating ball liquid level sensor (6) arranged in the oil storage box I (3) and a photoelectric liquid level sensor (8) arranged in the oil storage box II (4).
4. The oil leakage alarm of the oil discharge valve of the nitrogen-filled fire extinguishing device according to claim 1, wherein the on-site alarm device adopts an internal-striking electric bell, the remote alarm device comprises a monitoring terminal, and the monitoring terminal collects signals of the measuring sensor and displays the signals on a screen and synchronously displays the signals with the on-site alarm device.
5. The oil leakage alarm of the oil drain valve of the nitrogen-filled fire extinguishing device is characterized in that the oil storage box I (3) is of a rectangular box-shaped structure; the oil storage box II (4) is of a box-shaped structure with a semicircular side face.
6. The alarm method of the oil leakage alarm of the oil discharge valve of the nitrogen-filled fire extinguishing device is characterized by comprising the following steps of:
step S1: the oil collector (2) collects oil leaked from the oil drain valve, and the oil collected in the oil collector (2) is leaked and guided to the oil storage box I (3) through the guide pipe (7);
step S2: when the measuring sensor monitors that the oil leakage in the oil storage box I (3) reaches 108ml, the on-site alarm device inner-striking electric bell gives out alarm sound, meanwhile, a monitoring terminal of the remote alarm device displays a first-level alarm, and the monitoring terminal records the alarm sound;
step S3: if the oil leakage of the oil storage box II (4) is monitored to reach 108ml by the measuring sensor within three hours after the primary alarm is triggered, the inner-striking electric bell of the on-site alarm device gives out an alarm sound, meanwhile, a monitoring terminal of the remote alarm device displays secondary alarm, and the defect is judged to be a serious defect, the monitoring terminal sends defect information to a maintenance worker, and the maintenance worker needs to go to the on-site defect elimination;
if the oil leakage of the oil storage box II (4) is monitored to reach 108ml by the measuring sensor more than three hours after the primary alarm is triggered, the inner-striking electric bell of the on-site alarm device gives out an alarm sound, meanwhile, the monitoring terminal of the remote alarm device displays secondary alarm, and the defect is judged to be a common defect, the monitoring terminal sends defect information to maintenance personnel, and the maintenance personnel can eliminate the defect by combining with a power failure plan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111159322.7A CN114170764B (en) | 2021-09-30 | 2021-09-30 | Oil leakage alarm for oil discharge valve of nitrogen-filled fire extinguishing device and alarm method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111159322.7A CN114170764B (en) | 2021-09-30 | 2021-09-30 | Oil leakage alarm for oil discharge valve of nitrogen-filled fire extinguishing device and alarm method thereof |
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| CN114170764B CN114170764B (en) | 2024-09-24 |
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| CN112530142A (en) * | 2021-02-05 | 2021-03-19 | 云南雄鑫汽车有限公司 | Fuel leakage alarm device, system and method for passenger car |
| CN213183052U (en) * | 2020-10-26 | 2021-05-11 | 国网福建省电力有限公司宁德供电公司 | Mineral oil leakage alarm device |
| CN213912057U (en) * | 2020-10-28 | 2021-08-10 | 常州市达克富尔环保科技有限公司 | Novel real-time oil leakage alarm device for oil discharge and nitrogen injection fire extinguishing device |
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2021
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| JPH0815077A (en) * | 1994-06-27 | 1996-01-19 | Toyo Autom Kk | Method and device for detecting oil spillage from oil tan or the like |
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| CN114170764B (en) | 2024-09-24 |
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