CN203519626U - Automatic calibration device for transformer gas in oil - Google Patents

Automatic calibration device for transformer gas in oil Download PDF

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Publication number
CN203519626U
CN203519626U CN201320653616.XU CN201320653616U CN203519626U CN 203519626 U CN203519626 U CN 203519626U CN 201320653616 U CN201320653616 U CN 201320653616U CN 203519626 U CN203519626 U CN 203519626U
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CN
China
Prior art keywords
gas
equipment
valve
distribution
oil
Prior art date
Application number
CN201320653616.XU
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Chinese (zh)
Inventor
陈如申
黎勇跃
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杭州申昊信息科技有限公司
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Priority to CN201320653616.XU priority Critical patent/CN203519626U/en
Application granted granted Critical
Publication of CN203519626U publication Critical patent/CN203519626U/en

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Abstract

The utility model discloses an automatic calibration device for gas in transformer oil. The automatic calibration device is connected to an online transformer gas in oil monitoring system and comprises a standard gas transmission device, a gas distribution device, a vacuumizing device, an internal air cylinder and a calibration detection device; firstly, the vacuumizing device vacuumizes the internal air cylinder of the transformer gas in oil; secondly, the standard gas transmission device transmits the standard gas to the gas distribution device for gas distribution, then, transmits the distributed gas into the internal air cylinder, and finally transmits the gas into the calibration detection device for performing calibration and detection works. Two groups of mixed standard gas are proportionally mixed to form various standard gases with different concentrations, an automatic calibration mode is used, the aim of low gas calibration quantity and accurate calibration is realized, and detection efficiency is improved.

Description

A kind of automatic calibration device for Gas in Oil of Transformer

Technical field

The utility model belongs to power electronics surveying instrument technical field, relates in particular to a kind of automatic calibration device for Gas in Oil of Transformer.

Background technology

In Gases Dissolved in Transformer Oil determination and analysis technical field, vapor-phase chromatography is to apply in the industry relatively ripe Multi-Component Gas Analyzing method at present.Laboratory off-line type gas chromatograph can be according to stipulating in the JJG700-1999 < < of State Bureau of Technical Supervision gas chromatograph > > standard: the calibration interval of " gas chromatograph " are 2 years, namely about 2 years, to chromatograph be demarcated and be calibrated, to determine the accuracy of instrument.And there is the online Gas in Oil of Transformer on-line monitoring system that said function is applied in substation field, and after using some cycles, declined by the impact that sensor is aging and drift about, the accuracy meeting of system, need to it again be demarcated and be calibrated.And traditional artificial field calibration pattern needs artificial judgment time point on the one hand, demarcation and calibration cycle are longer, affect the normal use of system, need to configure a large amount of consumptive material (calibrating gas) and instrument at transformer field on the other hand, and construction is inconvenient.

Summary of the invention

In order to address the above problem, the utility model provides a kind of automatic calibration device for Gas in Oil of Transformer, reaches the object of automatic Calibration, thereby reduces consumptive material and improve and demarcate efficiency.

Adopt following technical scheme: a kind of automatic calibration device for Gas in Oil of Transformer for this reason, be connected on Gas in Oil of Transformer on-line monitoring system, it comprises calibrating gas conveying equipment, distribution equipment, vaccum-pumping equipment, inner cylinders and demarcates checkout equipment, first by vaccum-pumping equipment by the inner cylinders of the Gas in Oil of Transformer state that is evacuated, secondly by calibrating gas conveying equipment, calibrating gas being delivered to distribution equipment carries out distribution, again the gas preparing is sent into inner cylinders, finally send into demarcation checkout equipment and demarcate and testing; It is characterized in that:

Described calibrating gas conveying equipment comprises the first calibrating gas conveying equipment, the second calibrating gas conveying equipment and carries valve, after the output channel parallel connection of two calibrating gas conveying equipments, form a total gas pipe line, on total gas pipe line, install and carry valve; The first calibrating gas conveying equipment comprises the first air storage chamber and the first valve, and the first valve installation is on the output channel of the first air storage chamber; The second calibrating gas conveying equipment comprises the second air storage chamber and the second valve, and the second valve is arranged on the output channel of the second air storage chamber;

Described distribution equipment comprises air distribution cylinder, drive motor and distribution meter, and drive motor connects air distribution cylinder, and distribution meter is arranged on total gas pipe line;

Described vaccum-pumping equipment comprises vacuum pump and vacuum pump valve, and vacuum pump valve is arranged on vacuum pump, and described vaccum-pumping equipment is arranged on total gas pipe line;

In described inner cylinders, have piston rod, piston rod connects a stepper motor;

Described demarcation checkout equipment comprises injector and detecting device, between demarcation checkout equipment and inner cylinders, is also provided with a detection valve.

Further, between described vaccum-pumping equipment and inner cylinders, be provided with and demarcate valve and demarcate meter.

Further, on total gas pipe line, be also provided with a by-pass valve control, described by-pass valve control is between distribution equipment and vaccum-pumping equipment.

During work, first inner cylinders drives piston rod that internal gas is discharged by stepper motor, open again valve, by vaccum-pumping equipment by the total gas pipe line that the comprises inner cylinders state that is evacuated, secondly by calibrating gas conveying equipment, calibrating gas being delivered to distribution equipment carries out distribution, again the gas preparing is sent into inner cylinders, finally send into demarcation checkout equipment and demarcate and testing.By two groups of standard mixture proportionings, become the calibrating gas of various variable concentrations, adopt the mode of automatic Calibration, can reach gas amount few and demarcate object accurately, and improve the efficiency detecting.This device, as a standalone module of Gas in Oil of Transformer on-line monitoring system, adopts standard upper frame type structure, is convenient to the upgrading to old edition product.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the present embodiment.

Embodiment

Referring to accompanying drawing.The present embodiment comprises calibrating gas conveying equipment, distribution equipment, vaccum-pumping equipment, inner cylinders and demarcates checkout equipment, first by vaccum-pumping equipment by the inner cylinders of the Gas in Oil of Transformer state that is evacuated, secondly by calibrating gas conveying equipment, calibrating gas being delivered to distribution equipment carries out distribution, again the gas preparing is sent into inner cylinders, finally send into demarcation checkout equipment and demarcate and testing.

Described calibrating gas conveying equipment comprises the first calibrating gas conveying equipment, the second calibrating gas conveying equipment and transfer solenoid valve 5, after the output channel parallel connection of two calibrating gas conveying equipments, form a total gas pipe line, on total gas pipe line, transfer solenoid valve 5 is installed; The first calibrating gas conveying equipment comprises that the first air storage chamber 1 and the first solenoid valve 3, the first solenoid valves 3 are arranged on the output channel of the first air storage chamber 1; The second calibrating gas conveying equipment comprises that the second air storage chamber 2 and the second solenoid valve 4, the second solenoid valves 4 are arranged on the output channel of the second air storage chamber 2; Described distribution equipment comprises air distribution cylinder 7, drive motor 6 and distribution meter 8, and drive motor 6 connects air distribution cylinder 7, and distribution meter 8 is arranged on total gas pipe line; Between distribution equipment and vaccum-pumping equipment, be provided with a control solenoid valve 9; Described vaccum-pumping equipment comprises vacuum pump 11 and vacuum pump solenoid valve 10, and vacuum pump solenoid valve 10 is arranged on vacuum pump 11, and described vaccum-pumping equipment is arranged on total gas pipe line; Between described vaccum-pumping equipment and inner cylinders 15, be provided with and demarcate solenoid valve 12 and demarcate meter 13; In described inner cylinders 15, have piston rod, piston rod connects a stepper motor 14; Described demarcation checkout equipment comprises injector 17 and detecting device 18, between demarcation checkout equipment and inner cylinders 15, is also provided with a detection solenoid valve 16.

When reaching sense cycle or manual triggers, start automatic Calibration work, specific works step is as follows:

1) system vacuumizes: close and demarcate solenoid valve 12 and detect solenoid valve 16, open stepper motor 14, stepper motor 14 drives the piston rod of inner cylinders 15 to move downward, and makes cylinder space form vacuum state; Open drive motor 6, drive the interior formation vacuum state of air distribution cylinder 7; Open vacuum pump 11 and vacuum pump solenoid valve 10, extract the residual gas in total gas pipe line out, close afterwards vacuum pump 11 and vacuum pump solenoid valve 10.

2) distribution: first calculate gas volume amount.According to the concentration of calibrating gas 1 and calibrating gas 2 and object gas concentration relationship, calculate the volume of calibrating gas 1 and calibrating gas 2.Open the first solenoid valve 3 and transfer solenoid valve 5, calibrating gas 1 is injected to air distribution cylinder 7, and judge that by distribution quantifier 8 whether flow is up to standard, when flow reaches preset value, close the first solenoid valve 3 and transfer solenoid valve 5; Open the second solenoid valve 4 and transfer solenoid valve 5, calibrating gas 2 is injected to air distribution cylinder 7, when distribution quantifier 8 judgement flows reach preset value, close the second solenoid valve 4 and transfer solenoid valve 5.

3) gas storage: open and control solenoid valve 9 and demarcate solenoid valve 12, because the air pressure of air distribution cylinder 7 is greater than the air pressure of inner cylinders 15, the standard mixture in air distribution cylinder 7 injects in inner cylinders 15 automatically.

According to required object gas volume, by detection, demarcate meter 13, circulation step (2) and (3) successively, finally make gas volume amount in inner cylinders 15 reach the preset value of object gas volume.

4) demarcate: oil is closed and demarcated solenoid valve 12, opens and detects solenoid valve 16, by stepper motor 14, the normal mixture body in inner cylinders 15 is entered to detecting device 18 through injector 17, carries out spectrum analysis.

By above step, complete the demarcation of 1 concentration measuring point, realize the demarcation of gamut, can repeat above step.

Claims (3)

1. the automatic calibration device for Gas in Oil of Transformer, be connected on Gas in Oil of Transformer on-line monitoring system, it comprises calibrating gas conveying equipment, distribution equipment, vaccum-pumping equipment, inner cylinders and demarcates checkout equipment, first by vaccum-pumping equipment by the inner cylinders of the Gas in Oil of Transformer state that is evacuated, secondly by calibrating gas conveying equipment, calibrating gas being delivered to distribution equipment carries out distribution, again the gas preparing is sent into inner cylinders, finally send into demarcation checkout equipment and demarcate and testing; It is characterized in that:
Described calibrating gas conveying equipment comprises the first calibrating gas conveying equipment, the second calibrating gas conveying equipment and carries valve, after the output channel parallel connection of two calibrating gas conveying equipments, form a total gas pipe line, on total gas pipe line, install and carry valve; The first calibrating gas conveying equipment comprises the first air storage chamber and the first valve, and the first valve installation is on the output channel of the first air storage chamber; The second calibrating gas conveying equipment comprises the second air storage chamber and the second valve, and the second valve is arranged on the output channel of the second air storage chamber;
Described distribution equipment comprises air distribution cylinder, drive motor and distribution meter, and drive motor connects air distribution cylinder, and distribution meter is arranged on total gas pipe line;
Described vaccum-pumping equipment comprises vacuum pump and vacuum pump valve, and vacuum pump valve is arranged on vacuum pump, and described vaccum-pumping equipment is arranged on total gas pipe line;
In described inner cylinders, have piston rod, piston rod connects a stepper motor;
Described demarcation checkout equipment comprises injector and detecting device, between demarcation checkout equipment and inner cylinders, is also provided with a detection valve.
2. according to a kind of automatic calibration device for Gas in Oil of Transformer claimed in claim 1, it is characterized in that: between described vaccum-pumping equipment and inner cylinders, be provided with and demarcate valve and demarcate meter.
3. according to a kind of automatic calibration device for Gas in Oil of Transformer claimed in claim 1, it is characterized in that: on total gas pipe line, be also provided with a by-pass valve control, described by-pass valve control is between distribution equipment and vaccum-pumping equipment.
CN201320653616.XU 2013-10-23 2013-10-23 Automatic calibration device for transformer gas in oil CN203519626U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320653616.XU CN203519626U (en) 2013-10-23 2013-10-23 Automatic calibration device for transformer gas in oil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320653616.XU CN203519626U (en) 2013-10-23 2013-10-23 Automatic calibration device for transformer gas in oil

Publications (1)

Publication Number Publication Date
CN203519626U true CN203519626U (en) 2014-04-02

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103513011A (en) * 2013-10-23 2014-01-15 杭州申昊信息科技有限公司 Automatic calibration device for gas in transformer oil
CN104502542A (en) * 2014-12-29 2015-04-08 广东电网有限责任公司电力科学研究院 Field inspection device for gas monitoring alarm
CN107490644A (en) * 2017-09-25 2017-12-19 北京鹏宇昌亚环保科技有限公司 A kind of automatic calibration device and gas chromatograph
WO2018103438A1 (en) * 2016-12-07 2018-06-14 同方威视技术股份有限公司 Standard sample preparation and feeding device for use in calibration of trace-analysis instrument
CN108508150A (en) * 2018-03-28 2018-09-07 翼捷安全设备(昆山)有限公司 Gas sensor with simple calibrating method and its method
CN109324145A (en) * 2018-11-23 2019-02-12 国家电网有限公司 On-line monitoring equipment automatic calibration method and terminal device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103513011A (en) * 2013-10-23 2014-01-15 杭州申昊信息科技有限公司 Automatic calibration device for gas in transformer oil
CN104502542A (en) * 2014-12-29 2015-04-08 广东电网有限责任公司电力科学研究院 Field inspection device for gas monitoring alarm
WO2018103438A1 (en) * 2016-12-07 2018-06-14 同方威视技术股份有限公司 Standard sample preparation and feeding device for use in calibration of trace-analysis instrument
CN107490644A (en) * 2017-09-25 2017-12-19 北京鹏宇昌亚环保科技有限公司 A kind of automatic calibration device and gas chromatograph
CN108508150A (en) * 2018-03-28 2018-09-07 翼捷安全设备(昆山)有限公司 Gas sensor with simple calibrating method and its method
CN109324145A (en) * 2018-11-23 2019-02-12 国家电网有限公司 On-line monitoring equipment automatic calibration method and terminal device

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C56 Change in the name or address of the patentee

Owner name: HANGZHOU SHENHAO TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: SHENHAO INFORMATION SCIENCE + TECHNOLOGY CO., LTD., HANGZHOU

CP03 Change of name, title or address

Address after: Yuhang District Longtan Street warehouse before 311121 Hangzhou Road, Zhejiang, No. 21

Patentee after: HANGZHOU SHENHAO TECHNOLOGY CO., LTD.

Address before: Hangzhou City, Zhejiang province 310030 Xihu District Xiyuan Road No. 16 Building No. 5 3 floor

Patentee before: Hangzhou Shenhao Information Technology Co., Ltd.