CN211042618U - Positive pressure sealing test monitoring device for transformer - Google Patents

Positive pressure sealing test monitoring device for transformer Download PDF

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Publication number
CN211042618U
CN211042618U CN201821942973.7U CN201821942973U CN211042618U CN 211042618 U CN211042618 U CN 211042618U CN 201821942973 U CN201821942973 U CN 201821942973U CN 211042618 U CN211042618 U CN 211042618U
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China
Prior art keywords
transformer
pressure
oil tank
pipeline
flange
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Active
Application number
CN201821942973.7U
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Chinese (zh)
Inventor
肖行运
李宝锋
刘涛
张光资
廖钊
宋喜平
文盼
覃一鸣
王飞
李瑞麟
段桂英
罗传胜
蓝伟胜
赵旭强
李炎
何位经
徐兆丹
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Nanning Power Supply Bureau of Guangxi Power Grid Co Ltd
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Nanning Power Supply Bureau of Guangxi Power Grid Co Ltd
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Priority to CN201821942973.7U priority Critical patent/CN211042618U/en
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Publication of CN211042618U publication Critical patent/CN211042618U/en
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Anticipated expiration legal-status Critical

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Abstract

The utility model provides a positive pressure sealing test monitoring device for a transformer, which comprises a pressure monitor and a pressure dial plate which are arranged on a transformer oil tank, and a pipeline which is connected with the transformer oil tank and a transformer tank body; a pressure sensor, a built-in power supply and a pressure display screen are arranged in the pressure monitor; the pipeline is sequentially connected with a flange I, a valve and a flange II from the side of the transformer oil tank to the side of the transformer box, the pipeline is connected with an interface of the transformer box through the flange II, and the pipelines are connected through the flange I; the inside of the pipeline is provided with a sealing rubber gasket. The utility model discloses a transformer malleation sealing test monitoring devices, its simple structure, it is convenient easily to observe the monitoring. Meanwhile, the device is small in size, can slide, is convenient to use and is simple and convenient to operate.

Description

Positive pressure sealing test monitoring device for transformer
Technical Field
The utility model belongs to the technical field of monitoring devices, more specifically say, relate to a transformer malleation seal test monitoring devices.
Background
In a power grid, a transformer is used as power transformation equipment with the widest application, in order to ensure the safe operation of the equipment, power transformation maintenance personnel need to carry out various routine maintenance tests on the transformer every year, and the daily maintenance quantity is huge. The transformer oil leakage in the running process and the oil sample extraction in the daily maintenance process are used for prevention experiments and other reasons, so that the general oil shortage phenomenon is caused, and the oil shortage pipeline equipment needs to be properly filled with oil in the maintenance process to ensure the normal running of the equipment. The positive pressure sealing test is an important routine test before transformer delivery, and is a test project which must be done after transformer field installation (overhaul) is completed. When gas pressure is applied to the gapped closed container, gas or liquid in the container is forced to leak from the gap. According to this principle, the "power transformer inspection guide" requires: after the power transformer is installed, an external gas pressure of 0.03MPA is applied to the interior of the transformer from a breathing interface of the power transformer so as to detect the sealing performance of the main transformer body and each part, the test lasts for 24 hours, after the test is completed, each part of the main transformer is checked to see whether oil stains exist or not, and the oil stains are leakage points. The reason for the oil leakage is body sand holes, improper installation of the gasket fastening surface, and the like. Oil leakage is a common defect of a power transformer, and causes external moisture to enter the transformer, so that the oil is affected with damp and the insulation is reduced, and the safe operation of the transformer is threatened.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a transformer positive pressure seal test monitoring devices is provided, its simple structure, it is convenient easily to observe the monitoring. Meanwhile, the device is small in size, can slide, is convenient to use and is simple and convenient to operate.
In order to solve the technical problem, the technical scheme of the utility model is that: a positive pressure sealing test monitoring device for a transformer comprises a pressure monitor and a pressure dial which are arranged on a transformer oil tank, and a pipeline which is connected with the transformer oil tank and a transformer tank body; a pressure sensor, a built-in power supply and a pressure display screen are arranged in the pressure monitor; the pipeline is sequentially connected with a flange I, a valve and a flange II from the side of the transformer oil tank to the side of the transformer box, the pipeline is connected with an interface of the transformer box through the flange II, and the pipelines are connected through the flange I; the inside of the pipeline is provided with a sealing rubber gasket.
The positive pressure sealing test monitoring device of the transformer further comprises a lifting mechanism arranged at the bottom of the transformer oil tank.
The lifting mechanism comprises a lifting platform, an oil tank moving tray and a moving rotating wheel from top to bottom, and a lifting handle is arranged on the oil tank moving tray.
Preferably, the pressure sensor adopts a HKP-NP Hall pressure sensor.
Preferably, the pressure display screen adopts an L CD display screen.
The utility model has the advantages that: the utility model discloses a transformer malleation sealing test monitoring devices, its simple structure, it is convenient easily to observe the monitoring. Meanwhile, the device is small in size, can slide, is convenient to use and is simple and convenient to operate.
Drawings
Fig. 1 is a schematic structural view of a positive pressure sealing test monitoring device of a transformer according to the present invention;
fig. 2 is a schematic view of the internal structure of a pressure monitor of the positive pressure sealing test monitoring device of the transformer of the present invention;
wherein: 1-transformer oil tank, 2-air pipe interface, 3-pressure monitor, 4-pressure dial, 5-oil tank moving tray, 6-lifting platform, 7-lifting handle, 8-moving runner, 9-pipeline, 10-flange I, 11-valve, 12-sealing rubber gasket, 13-flange II 14-transformer tank body.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the positive pressure sealing test monitoring device for the transformer of the utility model comprises a pressure monitor 3 and a pressure dial 4 which are arranged on a transformer oil tank 1, and a pipeline 9 which connects the transformer oil tank 1 and a transformer tank 14. The pressure monitor 3 is internally provided with a pressure sensor 31, a built-in power supply 32 and a pressure display screen 33. The pressure monitor 3 is arranged on the upper part of the side surface of the transformer oil tank 1, the pressure dial 4 is arranged beside the pressure monitor 3, the pressure monitor 3 is connected with the pressure dial 4, and the pressure dial 4 is used for displaying whether the oil pressure of the transformer is in a normal working state or not and displaying data information on the pressure display screen 33 through the pressure sensor 31. Pipeline 9 is connected with flange I10, valve 11, flange II 13 in proper order from transformer tank 1 side to transformer tank 14 side, and pipeline 9 passes through flange II 13 and 14 interface connection of transformer tank, and flange I10 is used for the connection between the pipeline 9, and the valve 11 on the pipeline 9 can control the volume of cominging in and going out of oil, uses the gas injection condition in the control transformer that valve 11 can be better. The inside sealed cushion 12 that is provided with of pipeline 9, sealed cushion are located between 11 and the flange II 13 of valve, and sealed work between transformer tank 1 and transformer box 14 can be accomplished to sealed cushion 12, flange I10, flange II 13. The top of the transformer oil tank 1 is provided with an air pipe connector 2 for injecting air into the transformer oil tank 1. The bottom of the transformer oil tank 1 is provided with a lifting mechanism, the lifting mechanism comprises a lifting platform 6, an oil tank moving tray 5 and a moving rotating wheel 8 from top to bottom in sequence, and a lifting handle 7 is arranged on the oil tank moving tray 5. The oil tank removes tray 5 and provides the use position that lifting function can be better regulation control transformer tank 1, and removes runner 1 and can make things convenient for the removal of maintainer to transformer tank 1.
The pressure sensor 31 is preferably a HKP-NP Hall pressure sensor. Measured current of HKP-NP Hall pressure sensor: 0-25A, power supply voltage: +/-15V, can be used for measuring air pressure and hydraulic pressure, and has the characteristics of high test precision, good linearity, high response speed, strong overload capacity and the like.
The pressure display screen 33 adopts an L CD display screen to display the gas and hydraulic signals detected by the pressure sensor.
The utility model relates to a transformer malleation seal test monitoring devices's theory of operation does, the utility model discloses a transformer malleation seal test monitoring devices adopts the pressure signal sensor technique to hall pressure sensor is the core, adopts L CD to show data information and realizes the monitoring to the transformer tank internal pressure that awaits measuring, removes the tray and is used for bearing and sliding transformer tank 1, sealed cushion 12 in the pipeline is used for controlling the airtight degree between being connected transformer tank 14 and the transformer tank 1, valve 11 is used for adjusting pipeline internal gas pressure size, the utility model discloses a transformer malleation seal test monitoring devices, its simple structure, easily observe the monitoring convenience, simultaneously, the device is small slidable, and convenient to use and make easy and simple to handle.

Claims (5)

1. The utility model provides a transformer positive pressure seal test monitoring devices which characterized in that: the pressure monitoring device comprises a pressure monitor and a pressure dial which are arranged on a transformer oil tank, and a pipeline for connecting the transformer oil tank and a transformer tank body; a pressure sensor, a built-in power supply and a pressure display screen are arranged in the pressure monitor; the pipeline is sequentially connected with a flange I, a valve and a flange II from the side of the transformer oil tank to the side of the transformer box, the pipeline is connected with an interface of the transformer box through the flange II, and the pipelines are connected through the flange I; the inside of the pipeline is provided with a sealing rubber gasket.
2. The positive pressure sealing test monitoring device for the transformer according to claim 1, wherein: the lifting mechanism is arranged at the bottom of the transformer oil tank.
3. The positive pressure sealing test monitoring device for the transformer according to claim 2, wherein: the lifting mechanism comprises a lifting platform, an oil tank moving tray and a moving rotating wheel from top to bottom, and a lifting handle is arranged on the oil tank moving tray.
4. The positive pressure sealing test monitoring device for the transformer according to claim 1, wherein: the pressure sensor adopts an HKP-NP Hall pressure sensor.
5. The positive pressure sealing test monitoring device for the transformer according to claim 1, wherein the pressure display screen is an L CD display screen.
CN201821942973.7U 2018-11-23 2018-11-23 Positive pressure sealing test monitoring device for transformer Active CN211042618U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821942973.7U CN211042618U (en) 2018-11-23 2018-11-23 Positive pressure sealing test monitoring device for transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821942973.7U CN211042618U (en) 2018-11-23 2018-11-23 Positive pressure sealing test monitoring device for transformer

Publications (1)

Publication Number Publication Date
CN211042618U true CN211042618U (en) 2020-07-17

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ID=71538099

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821942973.7U Active CN211042618U (en) 2018-11-23 2018-11-23 Positive pressure sealing test monitoring device for transformer

Country Status (1)

Country Link
CN (1) CN211042618U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113740003A (en) * 2021-07-23 2021-12-03 中国南方电网有限责任公司超高压输电公司大理局 Method and system for testing sealing element for transformer under plateau weather

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113740003A (en) * 2021-07-23 2021-12-03 中国南方电网有限责任公司超高压输电公司大理局 Method and system for testing sealing element for transformer under plateau weather

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