CN215065566U - Gas detection and collection device for gas gathering body in gas relay - Google Patents
Gas detection and collection device for gas gathering body in gas relay Download PDFInfo
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- CN215065566U CN215065566U CN202120864563.0U CN202120864563U CN215065566U CN 215065566 U CN215065566 U CN 215065566U CN 202120864563 U CN202120864563 U CN 202120864563U CN 215065566 U CN215065566 U CN 215065566U
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Abstract
The utility model provides a gas collecting box gas detection collection device coheres in gas relay, includes the gas collecting box, the gas collecting box air inlet is connected with gas relay, the gas collecting box is connected with the blast pipe, the blast pipe is connected with a plurality of gas reservoirs, be equipped with gaseous detection device in the gas collecting box, gaseous in the gas relay accomplishes the detection through gaseous detection device in the gas collecting box, is collected by a plurality of gas reservoirs again, has realized gaseous automated inspection, multiunit collection in the gas relay, has not only reduced the artifical degree of difficulty of getting gas, still collects multiunit gas and carries out the laboratory test, can ensure the accuracy of detected data and be used for different detection purposes, the check-up maintenance work for the transformer substation brings the facility.
Description
Technical Field
The utility model relates to a transformer accessory technical field, concretely relates to gas detection and collection device in gas relay cohesion.
Background
The gas relay is a protector for transformer, and is installed in the pipeline between oil storage cabinet and oil tank of transformer, when the oil is decomposed to produce gas or produce oil flow surge by utilizing internal fault of transformer, the contact of gas relay can be operated, and the appointed control circuit can be switched on, and can promptly give out signal alarm or start protective element to automatically cut off transformer. The gas protection is divided into light gas and heavy gas, the light gas is mainly reflected to be lifted into the gas relay by the gas decomposed by oil when the gas is in operation or in slight fault, the oil surface is descended by the gas pressure, the opening cup of the relay falls along with the oil surface, the light gas dry spring contact is connected to send out a signal, and when the gas in the light gas is too much, the gas can be discharged by the gas nozzle of the gas relay. Heavy gas mainly reflects serious internal faults of the transformer, particularly faults that other transformer protection cannot act quickly, such as turn-to-turn short circuit and the like, generated strong gas pushes oil flow to impact a baffle plate, and a magnet on the baffle plate attracts a heavy gas dry spring contact to enable the contact to be connected and then tripped.
The operating regulations of power transformers (DL/T572-2010) stipulate that a transformer gas relay needs to be provided with two contacts, namely light gas and heavy gas, and in a normal operating state, the light gas is put into an alarm state, and the heavy gas is put into a trip state. When the gas protection signal acts, the transformer should be immediately checked to check whether the gas protection signal is caused by air accumulation, oil level reduction, secondary circuit failure or transformer internal failure. If gas exists in the gas relay, the gas quantity is recorded, the color of the gas is observed, whether the test is combustible or not is observed, and gas and oil samples are taken for chromatographic analysis. If the gas in the gas relay is colorless, odorless and incombustible, and the gas is judged to be air by chromatographic analysis, the transformer can continue to operate and the gas inlet defect can be eliminated in time. If the gas is combustible or the analysis result of the gas dissolved in the oil is abnormal, comprehensive judgment is carried out to determine whether the transformer is shut down.
The gas collecting box is mainly used for sampling gas of a gas relay in operation, the gas collecting box is generally installed at the middle lower part of a main transformer, one end of the gas collecting box is led out from an air hole in the side face of the gas relay through a soft copper gas leading pipe, transformer oil is filled in the gas collecting box at ordinary times, the gas collecting box mainly comprises a gas leading soft copper pipe, a gas discharging plug, an oil discharging plug, a box body and an observation window, gas collection in the existing gas collecting box is mainly carried out manually, accumulated gas in the gas relay needs to be led into the gas collecting box firstly, the oil discharging plug at the lower part of the gas collecting box is opened, the transformer oil in the box is discharged slowly, the accumulated gas in the gas relay enters the gas collecting box along the gas leading copper pipe under the action of oil pressure after the oil level in the box is lowered, when the signals of the gas leading pipe continuously discharge and the gas relay disappear and the oil level in the gas collecting box begins to rise, the gas relay is indicated that no accumulated gas exists in the gas relay, and the oil discharging plug is closed. Then the air relief plug is screwed off, the latex tube, the medical three-way tube and the injector are connected to the air relief plug, the medical three-way tube is rotated to take air, the air is collected in the injector, and the pneumatosis sampling is completed.
Artificial gas sampling has a number of drawbacks:
firstly, the working requires operators to correctly master and implement the sampling operation method, otherwise the sampling accuracy is affected, and meanwhile, the sampling operation method needs cooperation of multiple persons, manually records the gas quantity, observes the color of the gas and determines whether the experiment is combustible, so that the sampling operation method has the defect of low accuracy.
Secondly, when the gas protection signal acts, the transformer is immediately checked to check whether the gas is combustible or not due to air accumulation, oil level reduction, gas color observation and test, so that serious accidents are avoided, and manual operation is not in time.
Thirdly, after manual gas taking, gas loss may occur in each link of gas storage, transportation, laboratory analysis and the like, so that an analysis result is influenced, and misjudgment is caused to cause accident enlargement.
Fourthly, if the analysis result is air after manual gas taking, namely a false alarm signal is sent by the gas relay, manpower and material resources are wasted.
The problem of the present gas collection box get factors such as gas work loaded down with trivial details nature, the power off cycle length, cost of labor height is solved, realize the flexibility of check-up work, convenient promptness becomes the important work of technical staff in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas detection collection device in buchholz relay, to gaseous real-time detection and collect multiunit gas in buchholz relay, not only can gaseous in the real-time detection buchholz relay, still increase sample quantity for carry out the laboratory detection of gaseous different components, ensure testing result's accuracy.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the gas collecting box air inlet is connected with the gas relay, the gas collecting box air outlet is connected with a gas storage chamber, and a gas detection device is arranged in the gas collecting box.
Further, an oil discharge port is arranged at the lower end of the gas collection box and connected with a metering pump for controlling oil discharge speed and oil discharge amount.
Furthermore, a liquid level sensor is arranged in the gas collection box and used for detecting the sampling amount of the gas.
Further, a hydrogen sensor is arranged in the gas box and used for detecting the flammability of the gas.
Furthermore, a methane sensor and an acetylene sensor are connected to an exhaust port of the gas collecting box and used for detecting the methane and acetylene contents of the gas.
Furthermore, the exhaust port of the gas collection box is connected with a plurality of exhaust pipes, and the exhaust pipes are connected with a gas storage chamber.
Furthermore, the exhaust pipe is a four-way exhaust pipe and is connected with three air storage chambers.
Further, the air storage chamber is connected with the four-way exhaust pipe through an automatic air taking device.
Further, the air storage chamber is a detachable air storage chamber.
The utility model has the advantages that:
the utility model relates to a gas detection collection device coheres in buchholz relay, including the gas collection box, the gas collection box air inlet is connected with buchholz relay, the gas collection box is connected with the blast pipe, the blast pipe is connected with a plurality of gas reservoirs, be equipped with gaseous detection device in the gas collection box, gaseous in the buchholz relay accomplishes the detection through gaseous detection device in the gas collection box, is collected by a plurality of gas reservoirs again, has realized gaseous automated inspection, the multiunit collection in the buchholz relay, has not only reduced the artifical gas degree of difficulty of getting, still collects the multiunit gas and carries out the laboratory test, can ensure the accuracy of detected data and be used for different detection purposes, bring the facility for the check-up maintenance work of transformer substation.
Drawings
Fig. 1 is a schematic diagram of the gas gathering body detection and collection device in the gas relay.
Names corresponding to the marks in the figure:
1. the gas collection device comprises a multifunctional gas collection box, 11, an air inlet, 12, a liquid level sensor, 13, a hydrogen detection sensor, 14, an oil discharge port, 15, a metering pump, 16, an oil storage box, 17, an exhaust port, 2, a gas detection unit, 3, a four-way exhaust pipe, 4, a first gas storage chamber, 5, a second gas storage chamber, 6 and a third gas storage chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
as shown in fig. 1, the cohesive gas detection and collection device in the buchholz relay comprises a multifunctional gas collection box 1, wherein a gas inlet 11 of the multifunctional gas collection box 1 is connected with the buchholz relay, a liquid level sensor 12 and a hydrogen detection sensor 13 are arranged in the multifunctional gas collection box 1, and a gas outlet 17 of the multifunctional gas collection box 1 is connected with a plurality of gas storage chambers for collecting gas.
The multifunctional gas collecting box 1 is installed at the middle lower part of a main transformer, one end of the multifunctional gas collecting box 1 is led out from a gas hole on the side face of a gas relay by using soft copper, the multifunctional gas collecting box is used for sampling without ascending a height, the danger of gas taking is greatly reduced, an oil discharging port 14 is arranged at the lower end of the multifunctional gas collecting box 1, transformer oil is filled in the multifunctional gas collecting box 1 in a normal state, the oil discharging port 14 is opened when gas is taken, gas in the gas relay is pumped into the multifunctional gas collecting box 1 under the action of oil pressure, in the embodiment, a metering pump 15 is arranged on the oil discharging port 14, the speed and the oil discharging amount of oil discharging can be controlled by rotation of the metering pump 15, and further the sampling speed and the sampling amount of the multifunctional gas collecting box 1 are controlled.
An oil storage box 16 is also connected to the oil outlet 14, and the transformer oil collected by the oil storage box 16 can be sent to a laboratory for detection.
As shown in fig. 1, be equipped with level sensor 12 in the multi-functional gas collection box 1, a gas volume for detecting in the multi-functional gas collection box 1, still be equipped with hydrogen detection sensor 13 in the multi-functional gas collection box 1, a hydrogen concentration for detecting in the multi-functional gas collection box 1, calculate through the gas volume that compares level sensor 12 detection and the hydrogen concentration that hydrogen detection sensor 13 detected, can judge gaseous flammability, because the detection of gas volume and hydrogen concentration all goes on in multi-functional gas collection box 1, not contact with the outside air, make the testing result of flammability more accurate, improve the accuracy that the flammability was judged.
As shown in fig. 1, the gas outlet 17 of the gas collecting box is connected with a gas detection unit 2, and the gas detection unit 2 includes a methane sensor and an acetylene sensor for detecting the contents of methane and acetylene in the gas.
The exhaust port 17 of the multifunctional gas collecting box 1 is further connected with a four-way exhaust pipe 3, one exhaust pipe in the four-way exhaust pipe 3 is connected with the exhaust port 17 of the gas collecting box, the rest three exhaust pipes are connected with gas storage chambers, and the three gas storage chambers are marked as a first gas storage chamber 4, a second gas storage chamber 5 and a third gas storage chamber 6. The gas storage of three gas receiver is accomplished through the automatic switch of getting gas, adopts gaseous one-way solenoid valve in this embodiment, and automatic gas taking device stores gas respectively in first gas receiver 4, second gas receiver 5, third gas receiver 6.
During the in-service use, when having abnormal gas in the gas relay, establish the oil drain port 14 in multi-functional gas collection box 1 bottom through the gas volume in the multi-functional gas collection box 1 of measuring pump 15 automatic control, gas in the multi-functional gas collection box 1 passes through level sensor 12 and hydrogen detection sensor 13's detection, can the gaseous flammability of accurate judgement, methane in the gas, the content of acetylene can be monitored through the gas monitoring unit 2 of connection on gas vent 17, gas vent 17 of multi-functional gas collection box 1 still is connected with four-way exhaust pipe 3, four-way exhaust pipe 3 is connected with three gas receiver, through automatic gas taking device, gas is collected by three gas receiver, three gas receiver is dismantled and assembled gas receiver, after the gas collection finishes, send the gas receiver to the laboratory and carry out gas detection once more, in order to ensure the accuracy of testing result.
Compare and get gas with current manual work, the utility model discloses a gaseous detection collection device can realize the gaseous automated inspection of buchholz relay and collect multiunit gas, not only can gas in the real-time detection buchholz relay, still increases sample quantity for carry out the laboratory detection of gaseous different components, ensure testing result's accuracy.
Claims (8)
1. The utility model provides a gas detection collection device coheres in buchholz relay which characterized in that: the gas collection box is characterized by comprising a gas collection box, wherein an air inlet of the gas collection box is connected with a gas relay, the gas collection box is connected with an exhaust pipe, the exhaust pipe is connected with a plurality of gas storage chambers, and a gas detection device is arranged in the gas collection box.
2. The cohesive gas detection collection device for a buchholz relay according to claim 1, characterized in that: the lower end of the gas collection box is provided with an oil discharge port, and the oil discharge port is connected with a metering pump and used for controlling oil discharge speed and oil discharge amount.
3. The cohesive gas detection collection device for a buchholz relay according to claim 1, characterized in that: the gas detection device comprises a liquid level sensor for detecting the sampling amount of gas.
4. The gas detection and collection device in a buchholz relay according to claim 3, characterized in that: the gas detection device comprises a hydrogen sensor for detecting the flammability of the gas.
5. The cohesive gas detection collection device for a buchholz relay according to claim 1, characterized in that: the gas collection box is connected with a methane sensor and an acetylene sensor and used for detecting the methane and acetylene contents of the gas.
6. The cohesive gas detection collection device for a buchholz relay according to claim 1, characterized in that: the exhaust pipe is a four-way exhaust pipe and is connected with three air storage chambers.
7. The gas detection and collection device in a buchholz relay according to claim 6, characterized in that: the air storage chamber is connected with the four-way exhaust pipe through an automatic air taking switch.
8. The cohesive gas detection collection device for a buchholz relay according to claim 1, characterized in that: the air storage chamber is a detachable air storage chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120864563.0U CN215065566U (en) | 2021-04-25 | 2021-04-25 | Gas detection and collection device for gas gathering body in gas relay |
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| CN202120864563.0U CN215065566U (en) | 2021-04-25 | 2021-04-25 | Gas detection and collection device for gas gathering body in gas relay |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323817A (en) * | 2021-12-31 | 2022-04-12 | 南京力通达电气技术有限公司 | Automatic gas taking device and method for transformer |
| CN114427990A (en) * | 2022-04-07 | 2022-05-03 | 广东电网有限责任公司佛山供电局 | Gas taking method for transformer gas protection action and detection device thereof |
| CN115166163A (en) * | 2022-08-19 | 2022-10-11 | 广东电网有限责任公司 | Gas on-line monitoring method and device for gas relay |
-
2021
- 2021-04-25 CN CN202120864563.0U patent/CN215065566U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323817A (en) * | 2021-12-31 | 2022-04-12 | 南京力通达电气技术有限公司 | Automatic gas taking device and method for transformer |
| CN114427990A (en) * | 2022-04-07 | 2022-05-03 | 广东电网有限责任公司佛山供电局 | Gas taking method for transformer gas protection action and detection device thereof |
| CN115166163A (en) * | 2022-08-19 | 2022-10-11 | 广东电网有限责任公司 | Gas on-line monitoring method and device for gas relay |
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