CN207114708U - A kind of oil dissolved gas detection circuit of power transformer Intensive care - Google Patents
A kind of oil dissolved gas detection circuit of power transformer Intensive care Download PDFInfo
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- CN207114708U CN207114708U CN201720969871.3U CN201720969871U CN207114708U CN 207114708 U CN207114708 U CN 207114708U CN 201720969871 U CN201720969871 U CN 201720969871U CN 207114708 U CN207114708 U CN 207114708U
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Abstract
It the utility model is related to power equipment state monitoring and fault diagnosis technology field, and in particular to a kind of oil dissolved gas detection circuit of power transformer Intensive care, specifically include detection cell, sparking electrode, polarizing electrode；Air inlet pipe is set at the top of the detection cell, and detection cell bottom sets escape pipe, and detection cell side sets sampling pipe, and the top inside the detection cell sets arc chamber, and sparking electrode is arranged on inside arc chamber；Air inlet pipe, sampling pipe connect with arc chamber；Arc chamber bottom sets passage, and polarizing electrode is arranged on the bottom inside detection cell.The utility model takes the lead in realizing ionizes discharge detector to produce helium plasma and sample gas ionization by collision, the method detection gas content for collecting charged particle, conversion voltage signal based on helium plasma, the crucial problem that the conventional arts such as thermal conductivity detector (TCD) significantly consume carrier gas in links such as Oil-gas Separations is overcome, significantly improves measurement accuracy, repeatability.
Description
Technical field
It the utility model is related to power equipment state monitoring and fault diagnosis technology field, and in particular to a kind of power transformer
The oil dissolved gas detection circuit of device Intensive care.
Background technology
Main transformer in transformer station is mainly oil-filled transformer, the medium using insulating oil as insulation and radiating.
In actual motion, the gradual aging of transformer insulation oil, decomposition, generation be dissolved in hydrogen in oil, carbon monoxide, carbon dioxide,
The characteristic gas such as methane, ethane, acetylene, ethene are the key character parameters for reflecting apparatus insulated performance degradation sign.Work as transformation
The composition and content of device failure gas and equipment fault type and order of severity close relation.Therefore, transformation is continued to monitor
The chromatogram situation of device insulating oil is one of important means for monitoring transformer station high-voltage side bus, can aid in and finds its internal early stage early
Insulation defect, and by timely fault diagnosis and state evaluation, to take specific treatment measures, avoid its malignant development.
However, existing oil dissolved gas on-Line Monitor Device has the following disadvantages：Online monitoring data and offline color
Spectrum detection data have differences, i.e. the reliability of online monitoring data has query；Online monitoring data stability is poor, oil gas
Separation separates link with gas and all relies on a large amount of carrier gas, and test result often fluctuates.The above situation is because existing use color
The oil dissolved gas on-Line Monitor Device of detector is composed, such as semiconductor gas sensor and thermal conductivity detector (TCD), is also existed certain
Application limitation.One transformer（High voltage reactor）Application limitation be present in the using priciple for configuring a set of on-Line Monitor Device,
Mounted monitoring device is difficult to dismantle, shifts and be applied to monitoring miscellaneous equipment again, and part does not configure the change of monitoring device
Depressor is deficient after being pinpointed the problems in off-line test effectively to continue detection means.This present situation directly results in monitoring device
The hugely wasting of resources.
Above mentioned problem has had influence on the scientific progress of the safety and stability of power equipment, oil and gas detection, therefore is necessary to develop and fits
Gases Dissolved in Transformer Oil Intensive care device for a kind of packaged type of all kinds of abnormal transformers.However, existing master
Flow monitoring technology（Gas-chromatography）Development it is largely relevant with the development of its detector, it is seen that the property of chromatographic detector
It can be the key factor for influenceing oil dissolved gas on-line monitoring effect.Compared with traditional chromatographic detector, helium plasma
It is a kind of new chromatographic detector to ionize discharge detector.Research shows that helium ionization detector, which has, is applied to transformer
The potential quality of dissolved gas analysis.
In consideration of it, being necessary to develop a kind of oil dissolved gas detection circuit of power transformer Intensive care data, base is realized
Become in the new oil dissolved gas detector of helium plasma ionization discharge detector, and applied to monitoring, alarm scene
Depressor oil dissolved gas concentration and gas production rate characteristic index, so as to accurate and discovering device early latency defect.
The content of the invention
The utility model provides a kind of oil dissolved gas detection circuit of power transformer Intensive care, to solve industry
Interior conventional gas-phase chromatographic detector limits in the application of feature, stability, sensitivity etc., so as to find accurately and early
The latency defect of equipment.In order to realize above-mentioned target, concrete technical scheme of the present utility model is as follows：
A kind of oil dissolved gas detection circuit of power transformer Intensive care includes detection cell, sparking electrode, polarizing electrode；
Air inlet pipe is set at the top of the detection cell, and detection cell bottom sets escape pipe, and detection cell side sets sampling pipe, the detection cell
Internal top sets arc chamber, and sparking electrode is arranged on inside arc chamber；Air inlet pipe, sampling pipe connect with arc chamber；Electric discharge
Room bottom sets passage, and polarizing electrode is arranged on the bottom inside detection cell.
Further, the bottom inside the detection cell sets collection room, and polarizing electrode is arranged on collection chamber interior, escape pipe
Connected with collection room；Collection room is connected with arc chamber by passage.
Further, the making material of the detection cell is high-purity alumina ceramic pipe.
Further, the sparking electrode is crosspointer sparking electrode；The crosspointer spacing is 1~2 millimeter.
Further, the making material of the sparking electrode is platinum.
Further, the making material of the polarizing electrode is copper.
The utility model take the lead in realizing discharge detector is ionized based on helium plasma with produce helium plasma, with
Sample gas ionization by collision, the method detection gas content collected charged particle, change voltage signal, overcome thermal conductivity detector (TCD)
The crucial problem of carrier gas is significantly consumed in links such as Oil-gas Separations Deng conventional art, significantly improves measurement accuracy, repeatability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Wherein：1：Detection cell, 11：Air inlet pipe, 12：Escape pipe, 13：Sampling pipe, 14：Arc chamber, 15：Passage, 16：Adopt
Collect room, 2：Sparking electrode, 3：Polarizing electrode.
Embodiment
In order to be better understood from the utility model, the utility model is made with specific embodiment below in conjunction with the accompanying drawings further
Explanation：
As shown in figure 1, a kind of oil dissolved gas detection circuit of power transformer Intensive care includes detection cell 1, electric discharge electricity
Pole 2, polarizing electrode 3；The top of detection cell 1 sets air inlet pipe 11, and the bottom of detection cell 1 sets escape pipe 12, and the side of detection cell 1 is set
Sampling pipe 13, the top inside detection cell 1 set arc chamber 14, and sparking electrode 2 is arranged on inside arc chamber 14；Air inlet pipe 11,
Sampling pipe 13 connects with arc chamber 14；The bottom of arc chamber 14 sets passage 15, and polarizing electrode 3 is arranged on inside detection cell 1
Bottom.
Bottom inside detection cell 1 sets collection room 16, and polarizing electrode 3 is arranged on inside collection room 16, escape pipe 12 with
Collection room 16 connects；Collection room 16 is connected with arc chamber 14 by passage 15.
Detection cell 1 using can high temperature resistant, it is anticorrosive, insulation and smooth high-purity alumina ceramic pipe be made.
Sparking electrode 2 is crosspointer sparking electrode；Crosspointer spacing is 1 millimeter, and sparking electrode 2 is made of platinum, can be resistant to height
Warm, anticorrosive and conducting stabling current.They provide pulse voltage by stable pulsed high voltage generator, and adjusted by single-chip microcomputer,
Control pulse width（5~60 microseconds）, the cycle（100~360 microseconds）And amplitude（500~2000 volts）.
Polarizing electrode 3 and passive electrode, are made of copper, being capable of high temperature resistant, anticorrosive and conducting stabling current.It is received
Collect electronics, the ion in electric field, the electric current being collected into output voltage signal after electrometer amplifies.
In the present embodiment, discharge gas uses helium, and reason is to avoid discharge gas and sample gas（Atom divides
Son）React and produce error.By the complete 110 kv transformer bodies for being arranged on certain needs and continuing to monitor of the utility model
Near, insulation oil samples are obtained from transformer body, and insulation oil samples are de-gassed to obtain sample gas, sample gas
Enter detection cell 1 from sampling pipe 13, helium enters the arc chamber 14 of detection cell 1 and after the electric discharge of sparking electrode 2 from air inlet pipe 11
Mixed with sample gas from passage 15 and flow out to collection room 16, polarizing electrode 3 polarizes to sample gas and collects what is be ionized
Gas molecule, last helium and sample gas flow out detection cell 1 from escape pipe 12.When putting in the arc chamber 14 in detection cell 1
After applying pulse dc power on electrode 2, sparking electrode 2 will discharge, and high-energy photon is first by discharge gas helium
Helium atom is excited to metastable state, is represented with He*；Then with higher-energy He* again with the under test gas through chromatogram post separation
Molecule occurs inelastic collision and makes its ionization.Now it is subject to appropriate voltage on polarizing electrode 3 and collects ionized gas point
Son, and its signal amplification record is obtained into the spectral peak of sample gas ingredients.By the spectral peak face of sample gas ingredients
Product contrast standard gas goes out peak area, and then obtains the concentration of under test gas.
The utility model is successfully realized the function of finding and track the latent sexual abnormality of power transformer, and oil greatly improved
Measurement accuracy, the repeatability of middle dissolved gas, electric power safety production risk, efficiency and cost are reached and have integrated optimal mesh
Mark.
The utility model is not limited to above-described embodiment, the foregoing is only of the present utility model preferable
Case study on implementation, not to limit the utility model, all made within spirit of the present utility model and principle are any
Modifications, equivalent substitutions and improvements etc., should be included within the scope of protection of the utility model.
Claims (6)
- A kind of 1. oil dissolved gas detection circuit of power transformer Intensive care, it is characterised in that：Including detection cell, electric discharge electricity Pole, polarizing electrode；Air inlet pipe is set at the top of the detection cell, and detection cell bottom sets escape pipe, and detection cell side sets sampling Manage, the top inside the detection cell sets arc chamber, and sparking electrode is arranged on inside arc chamber；Air inlet pipe, sampling pipe are with putting Electric room connection；Arc chamber bottom sets passage, and polarizing electrode is arranged on the bottom inside detection cell.
- A kind of 2. oil dissolved gas detection circuit of power transformer Intensive care according to claim 1, it is characterised in that： Bottom inside the detection cell sets collection room, and polarizing electrode is arranged on collection chamber interior, and escape pipe connects with collection room；Adopt Collection room is connected with arc chamber by passage.
- A kind of 3. oil dissolved gas detection circuit of power transformer Intensive care according to claim 1, it is characterised in that： The making material of the detection cell is high-purity alumina ceramic pipe.
- A kind of 4. oil dissolved gas detection circuit of power transformer Intensive care according to claim 1, it is characterised in that： The sparking electrode is crosspointer sparking electrode；The crosspointer spacing is 1~2 millimeter.
- A kind of 5. oil dissolved gas detection circuit of power transformer Intensive care according to claim 1, it is characterised in that： The making material of the sparking electrode is platinum.
- A kind of 6. oil dissolved gas detection circuit of power transformer Intensive care according to claim 1, it is characterised in that： The making material of the polarizing electrode is copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720969871.3U CN207114708U (en) | 2017-08-04 | 2017-08-04 | A kind of oil dissolved gas detection circuit of power transformer Intensive care |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720969871.3U CN207114708U (en) | 2017-08-04 | 2017-08-04 | A kind of oil dissolved gas detection circuit of power transformer Intensive care |
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| Publication Number | Publication Date |
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| CN207114708U true CN207114708U (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720969871.3U Active CN207114708U (en) | 2017-08-04 | 2017-08-04 | A kind of oil dissolved gas detection circuit of power transformer Intensive care |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324707A (en) * | 2021-11-30 | 2022-04-12 | 北京航天计量测试技术研究所 | Discharge ionization detector |
-
2017
- 2017-08-04 CN CN201720969871.3U patent/CN207114708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324707A (en) * | 2021-11-30 | 2022-04-12 | 北京航天计量测试技术研究所 | Discharge ionization detector |
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