CN201337778Y - Control circuit for transformer fire extinguisher with maloperation prevention - Google Patents
Control circuit for transformer fire extinguisher with maloperation prevention Download PDFInfo
- Publication number
- CN201337778Y CN201337778Y CNU2009201015047U CN200920101504U CN201337778Y CN 201337778 Y CN201337778 Y CN 201337778Y CN U2009201015047 U CNU2009201015047 U CN U2009201015047U CN 200920101504 U CN200920101504 U CN 200920101504U CN 201337778 Y CN201337778 Y CN 201337778Y
- Authority
- CN
- China
- Prior art keywords
- relay
- transformer
- normally opened
- control circuit
- opened contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses a control circuit for a transformer fire extinguisher with maloperaiton prevention, belonging to the technical field of transformers, and solves the maloperation prevention problem of the fire protection control circuit. The utility model adopts the technical scheme that the control circuit comprises an oil discharge solenoid valve, a nitrogen injection opening valve, a fire detector, a gas relay, a transformer circuit breaker and three relays; wherein a normally open contact of the gas relay is firstly connected in series with an auxiliary normally closed contact of the transformer circuit breaker, then is connected in parallel with a first normally open contact of a first relay and controls the first relay; a normally open contact of the fire detector is connected in series with a second normally open contact of the first relay, and then controls a second relay; a time delay normally open contact of the second relay controls a third relay; normally closed contacts of the second relay and the third relay are connected in series and then control the oil discharge solenoid valve; and a normally open contact of the third relay controls the nitrogen injection opening valve. The control circuit greatly improves the reliability of the transformer fire extinguisher, and can effectively prevent the maloperation.
Description
Technical field
The utility model relates to a kind of improved transformer extinguishing device control circuit, can effectively prevent the generation of misoperation, belongs to the transformer technology field.
Background technology
Large oil immersed transformer is the key equipment in the power transmission and transformation network, because short circuit, the internal arc that overvoltage etc. cause can make the oil temperature surpass burning-point, decomposites various fuel gas, in case fuel tank breaks, oxygen enters, just breaking out of fire easily, and then cause large-scale power failure, cause heavy losses, therefore, large oil immersed transformer has generally all disposed extinguishing device.
The oil draining nitrogen filling device is to be specifically designed to the fire-proof and explosion-proof a kind of New Type Fire-fighting Device of oil-immersed type transformer, mainly comprises oil exit pipe, oil drain solenoid valve, nitrogen cylinder, notes nitrogen pipe, annotates nitrogen open valve, cut-off valve and control circuit.Fig. 1 is this extinguishing device main element structural representation, and Fig. 2 is the electrical schematic diagram of its control circuit.During breaking out of fire, the fire detector QT of control circuit (is installed on the transformer oil box top, be used for detected temperatures) and gas relay K G (be installed on the oil pipe between oil tank of transformer and the conservator, be used to detect the fuel gas in the fuel tank) detect corresponding signal after, fire-fighting device starts the fire extinguishing program.Control circuit is opened oil drain solenoid valve L earlier, makes the part oil at fuel tank top be excreted to emergency oil pond through oil exit pipe, and cut-off valve 7 will be closed the oiling pipeline that flows to fuel tank from conservator automatically according to the flow of oil.The oil extraction time-delay will be annotated nitrogen open valve Y again and open after 20 seconds, will inject from the fuel tank bottom through post-decompression nitrogen, the cool oil of fuel tank bottom is under the stirring action of nitrogen, to be recycled to the top of pasta, the high temperature oil that pasta is being burnt is lowered the temperature rapidly, reaches the fire extinguishing purpose.The shortcoming of existing fire extinguishing control circuit is that the startup loop is simple, entry condition is single, thereby malfunction takes place easily, in case and control circuit generation malfunction will produce uncertain consequence to the transformer operation, this makes the reliability of fire plant greatly reduce, and therefore is necessary existing fire extinguishing control circuit is improved.
Summary of the invention
But the purpose of this utility model is to provide the transformer extinguishing device control circuit of the faulty action preventing that a kind of entry condition is provided with rationally, reliability is high.
The alleged problem of the utility model realizes with following technical proposals:
But a kind of transformer extinguishing device control circuit of faulty action preventing, by oil drain solenoid valve, annotate the nitrogen open valve, fire detector, gas relay, transformer breaker is formed, described notes nitrogen open valve is installed on to be annotated on the nitrogen pipe, oil drain solenoid valve is installed on the oil exit pipe, fire detector is installed near the transformer oil box top rising seat, gas relay KG is installed on the oil pipe between fuel tank and the conservator, and the normally opened contact of described gas relay is connected in series and the coil of controlling first relay after first normally opened contact of first relay is in parallel with the auxiliary normally-closed contact of transformer breaker earlier again; The control coil of second normally opened contact series connection back control, second relay of the normally opened contact of described fire detector, first relay; The time-delay normally opened contact of second relay is controlled the coil of the 3rd relay; The control coil of two chain normally-closed contacts serial connection back control oil drain solenoid valve of two chain normally opened contacts of second relay and the 3rd relay, the control coil of nitrogen open valves is annotated in two chain normally opened contacts controls of the 3rd relay.
But the transformer extinguishing device control circuit of above-mentioned faulty action preventing is set up remote control switch, and the normally opened contact of described remote control switch is parallel on first normally opened contact of first relay.
But the transformer extinguishing device control circuit of above-mentioned faulty action preventing, described transformer breaker comprises high-pressure side breaker, medium voltage side breaker and low-pressure side breaker, three's auxiliary normally-closed contact is connected in series.
But the transformer extinguishing device control circuit of above-mentioned faulty action preventing, described fire detector generally is provided with eight, described eight fire detectors are divided into two groups that quantity equates, and four fire detectors of every group are connected in parallel, and the fire detector of two groups of parallel connections is connected in series.
But the transformer extinguishing device control circuit of above-mentioned faulty action preventing is set up manual fire button, and the coil of second relay connects power supply through the normally opened contact of manual fire button, manually switches by change-over switch between control model and the automatic control mode.
But the transformer extinguishing device control circuit of above-mentioned faulty action preventing, set up auxiliary reclay, the coil of described auxiliary reclay connects power supply through the normally opened contact of fire detector, two normally opened contact is series at oil drain solenoid valve respectively and annotates in the control loop of nitrogen open valve, prevents the device action under the non-fire condition.
But the transformer extinguishing device control circuit of above-mentioned faulty action preventing, set up the emergency release button, be series at after the normally opened contact of the normally opened contact of described emergency release button and first relay is connected in parallel in the control loop of oil drain solenoid valve and (be used under the situation that manually-operated extinguishing device do not start, auxiliary breaker contact and the heavy methane gas relay tip connected makes the fire extinguishing action).
The utility model adopts the output signal of fire detector, gas relay and transformer breaker auxiliary contact as entry condition, can start fire plant after three kinds of signals are complete, has improved accuracy and faulty action preventing ability that fire is judged greatly.Fire detector adopt eight and be divided into two groups after connect, can improve the reliability of signal; Transformer breaker is provided with three, and auxiliary reclay is set, and has increased entry condition, and the faulty action preventing ability is further improved.Manually the effect of fire button, emergency release button and remote control switch is to make the extinguishing device also can be by manually booting under failure condition.The utility model entry condition is provided with rationally, has improved the reliability of transformer extinguishing device greatly, can effectively prevent the generation of misoperation.
Description of drawings
Fig. 1 is an extinguishing device main element scheme of installation;
Fig. 2 is the electrical schematic diagram of traditional extinguishing device;
Fig. 3 is an electrical schematic diagram of the present utility model.
Each label is among the figure: 1, fuel tank, 2, conservator, 3, emergency oil pond, 4, fire extinguishing box, 5, oil exit pipe, 6, annotate the nitrogen pipe, 7, cut-off valve, 8, insulating sleeve, Y, annotate the nitrogen open valve, L, oil drain solenoid valve, QT, QT1～QT8, fire detector, KG, gas relay, Q, breaker, AN1, manual fire button, AN2, the emergency release button, K, change-over switch, J1～J4, relay, J1-1, J1-2, the contact of relay J 1,2-1, J2-2, J2-3, the contact of relay J 2, J3-1, J3-2, the contact of relay J 3, J4-1, J4-2, the contact of relay J 4, KY, remote control switch, DL1, the high-pressure side breaker, DL2, the medium voltage side breaker, DL3, the low-pressure side breaker.
The specific embodiment
Referring to Fig. 1, annotating nitrogen open valve Y is installed on the notes nitrogen pipe 6, oil drain solenoid valve L is installed on the oil exit pipe 5, fire detector QT is installed on the transformer oil box top, gas relay KG is installed on the oil pipe between fuel tank 1 and the conservator 2, and other electric elements of fire extinguishing control circuit all are installed in the fire extinguishing control cabinet.
Referring to Fig. 3, operation principle of the present utility model is: when change-over switch K is in automated location (two pairs of contactings of left side band point), the auxiliary contact of fire detector QT1～QT8 gas relay KG and three breaker DL1～DL3 are in off-state, and relay J 1, J2, J4 are failure to actuate.When fire takes place, when temperature is elevated to a certain numerical value, fire detector QT1～QT8 conducting.But fire produces a large amount of alkene gases when taking place, and gas relay KG detects also conducting behind the fuel gas, and three breaker DL1～DL3 are because of the tripping operation of reasons such as short circuit, auxiliary contact conducting.After the auxiliary contact of three breakers and the gas relay K G conducting coil of relay J 1 is got, the normally opened contact J1-1 closure of relay J 1, the normally opened contact of the auxiliary contact of three breakers and gas relay K G is by short circuit, and relay J 1 is in locking states.Meanwhile, the normally opened contact J1-2 of relay J 1, J1-3 closure, so the coil of relay J 2 gets, its normally opened contact J2-2 closure, this moment, the coil of relay J 4 got electric owing to fire detector QT1～QT8 conducting, and its contact J4-1 and J4-2 all connect, oil drain solenoid valve L gets electric, and oil extraction begins.After 20 seconds, the time-delay normally opened contact J2-1 closure of relay J 2, the coil of relay J 3 gets electric, and its normally opened contact J3-2 closure is annotated nitrogen open valve Y and is opened, and nitrogen extinguishing begins.Meanwhile, the normally-closed contact J3-1 of relay J 3 disconnects, and oil drain solenoid valve L and circuit are isolated.In the above-mentioned fire extinguishing procedure, all during conducting, system just begins fire extinguishing to the auxiliary contact that have only gas relay KG, fire detector QT and three breakers, can effectively prevent the generation of misoperation like this.
(two pairs of contactings of right side band point) press manual fire button AN1 when change-over switch K is in manual position, and the coil of relay J 2 gets, its normally opened contact J2-2 closure, this moment is if J4-1 and J1-3 are in closure state, and then oil drain solenoid valve L gets electricly, and oil extraction begins.After 20 seconds, the time-delay normally opened contact J2-1 closure of relay J 2, the coil of relay J 3 gets electric, and its normally opened contact J3-2 closure is annotated nitrogen open valve Y and is opened, and nitrogen extinguishing begins.Meanwhile, the normally-closed contact J3-1 of relay J 3 disconnects, and oil drain solenoid valve L and circuit are isolated.
Eight of fire detector operated by rotary motion are divided into two groups with fire detector, are divided into two groups at the fire detector of transformer oil box top high and low pressure side, every group is composed in parallel by 4 fire detectors, series connection again between two groups prevents that the single detector fault from making K4 connect the error starting extinguishing device.K4 connects just action message of extinguishing device after guaranteeing at least two above detector actions, avoids any detector single failure simultaneously, causes error action of device, can make temperature detection more reliable like this.
The utility model starts the normally opened contact J4-1 of loop serial connection auxiliary reclay J4 and the normally opened contact J1-3 of first relay J 1 in oil drain solenoid valve, avoids causing the connection oil extraction of draining valve L, the extinguishing device misoperation because J2 relay error starting or mistake are bumped.At the normally opened contact J4-2 that annotates the corresponding auxiliary reclay J4 of nitrogen loop serial connection fire detector, avoid delayed startup J3 behind the J2 relay error starting, start and annotate the nitrogen loop thereby connect Y, cause nitrogen to leak.Can also guarantee simultaneously that fire detector J4 fault is connected under manual state, mistake is bumped or the manual fire button AN1 of maloperation, and can the error starting extinguishing device.
Manual emergency unlock button AN2 is set, guarantees breaking out of fire and the J1 relay can manually reliably start extinguishing device when not starting.
Consider that the unmanned remote control reliably starts extinguishing device, increase surveillance remote control contact KY in the startup loop of J1 relay.Under automatic mode, J1 hinders when not moving for some reason when main transformer catches fire, can be by remote control force start extinguishing device.
Claims (6)
1, but a kind of transformer extinguishing device control circuit of faulty action preventing, by oil drain solenoid valve (L), annotate nitrogen open valve (Y), fire detector, gas relay (KG), transformer breaker and three relays are formed, described notes nitrogen open valve (Y) is installed on to be annotated on the nitrogen pipe (6), oil drain solenoid valve (L) is installed on the oil exit pipe (5), fire detector is installed on the transformer oil box top, gas relay (KG) is installed on the oil pipe between fuel tank and the conservator, the normally opened contact of described gas relay (KG) earlier with the auxiliary normally-closed contact of the transformer breaker coil of afterwards controlling first relay (J1) in parallel that is connected in series again with first normally opened contact (J1-1) of first relay (J1); The control coil of second normally opened contact (J1-2) series connection back control second relay (J2) of the normally opened contact of described fire detector, first relay (J1); The coil of time-delay normally opened contact (J2-1) control the 3rd relay (J3) of second relay (J2); The control coil of two chain normally opened contacts (J2-2) of second relay (J2) and two chain normally-closed contacts (J3-1) of the 3rd relay (J3) serial connection back control oil drain solenoid valve (L), the control coil of nitrogen open valve (Y) is annotated in two chain normally opened contacts (J3-2) control of the 3rd relay (J3).
But 2, according to the transformer extinguishing device control circuit of the described faulty action preventing of claim 1, it is characterized in that, set up remote control switch (KY), the normally opened contact of described remote control switch (KY) is parallel on first normally opened contact (J1-1) of first relay (J1).
But 3, according to the transformer extinguishing device control circuit of claim 1 or 2 described faulty action preventings, it is characterized in that, described transformer breaker comprises high-pressure side breaker (DL1), medium voltage side breaker (DL2) and low-pressure side breaker (DL3), and three's auxiliary normally-closed contact is connected in series.
But 4, according to the transformer extinguishing device control circuit of the described faulty action preventing of claim 3, it is characterized in that described fire detector has eight, described eight fire detectors are divided into two groups that quantity equates, four fire detectors of every group are connected in parallel, and the fire detector of two groups of parallel connections is connected in series.
But 5, according to the transformer extinguishing device control circuit of the described faulty action preventing of claim 4, it is characterized in that, set up manual fire button (AN1), the coil of second relay (J2) connects power supply through the normally opened contact of manual fire button (AN1), manually switches by change-over switch (K) between control model and the automatic control mode.
But 6, according to the transformer extinguishing device control circuit of the described faulty action preventing of claim 5, it is characterized in that, set up auxiliary reclay (J4), the coil of described auxiliary reclay (J4) connects power supply through the normally opened contact of fire detector, and two normally opened contact is series at oil drain solenoid valve (L) respectively and annotates in the control loop of nitrogen open valve (Y).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201015047U CN201337778Y (en) | 2009-02-12 | 2009-02-12 | Control circuit for transformer fire extinguisher with maloperation prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201015047U CN201337778Y (en) | 2009-02-12 | 2009-02-12 | Control circuit for transformer fire extinguisher with maloperation prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201337778Y true CN201337778Y (en) | 2009-11-04 |
Family
ID=41233313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201015047U Expired - Fee Related CN201337778Y (en) | 2009-02-12 | 2009-02-12 | Control circuit for transformer fire extinguisher with maloperation prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201337778Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599618A (en) * | 2013-12-05 | 2014-02-26 | 国网上海市电力公司 | Improvement of electric control unit of oil extraction and nitrogen injection device |
| CN103861229A (en) * | 2014-02-26 | 2014-06-18 | 昆山宁华消防系统有限公司 | Lightning protection starting module applied to SDE (Self-Distinguishing Extinguisher) |
| CN103861228A (en) * | 2014-02-26 | 2014-06-18 | 昆山宁华消防系统有限公司 | Starting module applied to SDE fire extinguisher |
| CN104436477A (en) * | 2014-12-01 | 2015-03-25 | 国家电网公司 | Comprehensive fire fighting system and comprehensive fire fighting method of large-size oil-containing equipment of transformer substation |
| CN104795204A (en) * | 2015-02-09 | 2015-07-22 | 广西电网有限责任公司电力科学研究院 | Built-in nitrogen injection device of oil-immersed transformer |
| CN105185546A (en) * | 2015-10-20 | 2015-12-23 | 夏烬楚 | 75MVA transformer with mixed explosion-proof function |
| CN105185543A (en) * | 2015-10-20 | 2015-12-23 | 夏烬楚 | Explosion-proof 75MVA transformer |
| CN105185545A (en) * | 2015-10-20 | 2015-12-23 | 夏烬楚 | 75 MVA transformer capable of realizing pressure relief and explosion prevention |
| CN110523028A (en) * | 2019-09-24 | 2019-12-03 | 贵州电网有限责任公司 | The oil draining nitrogen filling device remote control apparatus and control method of oil-immersed transformer |
| CN110917528A (en) * | 2019-12-09 | 2020-03-27 | 国网宁夏电力有限公司 | Cable fire protection judgment method and system for fire protection linkage |
| CN111001115A (en) * | 2019-12-09 | 2020-04-14 | 国网宁夏电力有限公司 | Fire protection judgment method and system for fire-fighting linkage transformer |
| CN111132061A (en) * | 2019-12-23 | 2020-05-08 | 江西科安消防技术有限公司 | Fire door monitoring device is prevented in thing networking fire control |
| CN114247069A (en) * | 2021-12-24 | 2022-03-29 | 北京南瑞怡和环保科技有限公司 | Prevent main fire extinguishing system control circuit that becomes of maloperation |
-
2009
- 2009-02-12 CN CNU2009201015047U patent/CN201337778Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599618B (en) * | 2013-12-05 | 2016-05-18 | 国网上海市电力公司 | A kind of improvement of oil draining nitrogen filling device ECU |
| CN103599618A (en) * | 2013-12-05 | 2014-02-26 | 国网上海市电力公司 | Improvement of electric control unit of oil extraction and nitrogen injection device |
| CN103861229A (en) * | 2014-02-26 | 2014-06-18 | 昆山宁华消防系统有限公司 | Lightning protection starting module applied to SDE (Self-Distinguishing Extinguisher) |
| CN103861228A (en) * | 2014-02-26 | 2014-06-18 | 昆山宁华消防系统有限公司 | Starting module applied to SDE fire extinguisher |
| CN104436477A (en) * | 2014-12-01 | 2015-03-25 | 国家电网公司 | Comprehensive fire fighting system and comprehensive fire fighting method of large-size oil-containing equipment of transformer substation |
| CN104436477B (en) * | 2014-12-01 | 2017-09-08 | 国家电网公司 | The large-scale oily plant of transformer station integrates fire-fighting system and method |
| CN104795204A (en) * | 2015-02-09 | 2015-07-22 | 广西电网有限责任公司电力科学研究院 | Built-in nitrogen injection device of oil-immersed transformer |
| CN105185545A (en) * | 2015-10-20 | 2015-12-23 | 夏烬楚 | 75 MVA transformer capable of realizing pressure relief and explosion prevention |
| CN105185543A (en) * | 2015-10-20 | 2015-12-23 | 夏烬楚 | Explosion-proof 75MVA transformer |
| CN105185546A (en) * | 2015-10-20 | 2015-12-23 | 夏烬楚 | 75MVA transformer with mixed explosion-proof function |
| CN110523028A (en) * | 2019-09-24 | 2019-12-03 | 贵州电网有限责任公司 | The oil draining nitrogen filling device remote control apparatus and control method of oil-immersed transformer |
| CN110523028B (en) * | 2019-09-24 | 2023-11-10 | 贵州电网有限责任公司 | Remote control device and control method for oil-discharging and nitrogen-injecting device of oil-immersed transformer |
| CN110917528A (en) * | 2019-12-09 | 2020-03-27 | 国网宁夏电力有限公司 | Cable fire protection judgment method and system for fire protection linkage |
| CN111001115A (en) * | 2019-12-09 | 2020-04-14 | 国网宁夏电力有限公司 | Fire protection judgment method and system for fire-fighting linkage transformer |
| CN111132061A (en) * | 2019-12-23 | 2020-05-08 | 江西科安消防技术有限公司 | Fire door monitoring device is prevented in thing networking fire control |
| CN114247069A (en) * | 2021-12-24 | 2022-03-29 | 北京南瑞怡和环保科技有限公司 | Prevent main fire extinguishing system control circuit that becomes of maloperation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201337778Y (en) | Control circuit for transformer fire extinguisher with maloperation prevention | |
| CN104436477B (en) | The large-scale oily plant of transformer station integrates fire-fighting system and method | |
| CN201533958U (en) | Intelligent fire extinguishing apparatus of oil extraction nitrogen injection type transformer | |
| CN110523028B (en) | Remote control device and control method for oil-discharging and nitrogen-injecting device of oil-immersed transformer | |
| CN203935543U (en) | Oil-drainage nitrogen-filling fire-extinguishing | |
| CN207024428U (en) | Ore heat furnace transformer unattended surveillance carries fire-extinguishing function concurrently and automatically protects system | |
| CN200987848Y (en) | Transformer fire-fighting device control circuit | |
| CN107807329A (en) | A kind of steam turbine AST solenoid valve failures real-time monitoring and alarming and method | |
| CN108873832A (en) | A kind of flogic system and device of generator failure intertripping stator cooling water pump | |
| CN210325443U (en) | Transformer fault pneumatic oil discharge system | |
| CN104821557A (en) | Control loop of breaker operation box | |
| CN105185542A (en) | Explosion-proof 75MVA transformer system | |
| CN210644903U (en) | Remote control device for oil discharging and nitrogen injecting device of oil-immersed transformer | |
| CN107327394A (en) | A kind of mechanical starter by force for Firefighting Pump Control cabinet | |
| CN201829929U (en) | Novel hard trip loop for large-scale thermal power unit MFT (main fuel trip) | |
| CN211524912U (en) | Safety device of steam turbine feed pump | |
| CN113663252A (en) | Fire extinguishing device, fire extinguishing nozzle and method for lithium ion battery energy storage system | |
| CN207457446U (en) | A kind of steam turbine AST solenoid valve failure real-time monitoring and alarmings | |
| CN201135729Y (en) | Spraying automatic control device for fire-fighting | |
| CN205211578U (en) | 75MVA transformer of explosion -proof environmental protection | |
| CN217724390U (en) | Oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device | |
| CN200963464Y (en) | Transformer fire extinguishing device capable of preventing false action | |
| CN213100536U (en) | Oil-immersed transformer gas control oil discharge nitrogen injection fire extinguishing device | |
| CN108460960B (en) | Voice prompting device for preventing misoperation and locking of high-voltage switch cabinet | |
| CN105185546A (en) | 75MVA transformer with mixed explosion-proof function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20130212 |