CN209296398U - A kind of transformer methane gas site sampling device - Google Patents
A kind of transformer methane gas site sampling device Download PDFInfo
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- CN209296398U CN209296398U CN201821493745.6U CN201821493745U CN209296398U CN 209296398 U CN209296398 U CN 209296398U CN 201821493745 U CN201821493745 U CN 201821493745U CN 209296398 U CN209296398 U CN 209296398U
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Abstract
The utility model discloses a kind of transformer methane gas site sampling device, including air extractor, the first connecting tube and communicating pipe, air extractor is equipped with the first air exhaust head, and communicating pipe includes the first interconnected port, the second port and third connectivity mouth；First connecting tube one end is connected to the first port, and the first connecting tube other end is equipped with the jointing for connecting with Buchholz relay, and the second port is connected to the first air exhaust head, and third connectivity mouth is equipped with elastic packing plug.The utility model provides kind of a transformer methane gas site sampling device, has leakproofness good, and the leakage of gas or outside air can effectively be avoided to enter to pollute sample gas；The advantages such as structure is simple, and manufacturing cost is low.
Description
Technical field
The utility model relates to power equipment test instrument technical fields, embody more particularly, to a kind of transformer device in Gas
Field sampler.
Background technique
In the power system, high-power transformer is the core equipment of entire power supply system, its failure by power supply can
Normal operation by property and system produces serious influence.Protection is a kind of protective device of oil-immersed transformer, is to become
Main guard block inside depressor, in the turn-to-turn and layer short circuit, iron core failure, inside pipe casing failure, winding to transformer
The failures such as portion's broken string and insulation degradation and pasta decline can sensitive action.Buchholz relay is mounted on transformer box cover and oil storage
In the connecting tube of tank, when breaking down inside oil-immersed transformer, since electric arc decomposes insulating materials and generates a large amount of gas
Body or when oil stream being caused to impact, acts the contact of Buchholz relay.Alarm signal is issued in time or cuts off transformer automatically, is protected
Protect the safe operation of equipment.
Once Buchholz relay alarm occurs, service personnel will arrive the gas in transformer field acquisition Buchholz relay
Body by judging the analysis of gas componant whether inside transformer has occurred the type of failure and failure, therefore acquires
The gas of Buchholz relay is particularly important.Gas is sent in collector box by transformer Buchholz relay by pipeline, tradition
Sampling method be that syringe and collector box are connected by moccasin pipe, the gas in collector box is extracted into syringe.This side
Method haves the shortcomings that following: (1) junction of hose and collector box, syringe does not have good sealing performance, is easy to happen gas
Leakage or outside air enter to polluting sample gas.(2) gas that Buchholz relay cannot be quantified, for judging transformer event
For barrier, lack the information of gas gross.
Chinese patent application publication number CN204594751U, publication date are on 08 25th, 2015, entitled " transformer watt
This gas collector " discloses a kind of transformer methane gas collector, including vacuumizes collection airbag, structural feature
It vacuumizes collection airbag side upper end to be provided with vertical rubber seal and take stomata, vacuumizes collection airbag other side upper end and be provided with F shape
Rubber hose is provided with non-return valve on the upper end transverse tube of F shape rubber hose, is provided on the middle part transverse tube of F shape rubber hose
Lower non-return valve；The upper end transverse tube outer end of F shape rubber hose is provided with attaching nut, the middle part transverse tube outer end of F shape rubber hose
It is provided with lower attaching nut；It is described vacuumize collection airbag on the shape rubber hose side F middle and lower part vertical array have scale strip.But it should
Device can not active inspiration, gettering efficiency is low；Vacuum bag can not reuse, the vacuum bag for taking gas to require more to renew every time,
The air-tightness that vacuum bag is connect with hose is not can guarantee；And the device can not accurately measure the total amount of methane gas.
Summary of the invention
The utility model in order to overcome the shortcomings in the prior art, provides a kind of transformer methane gas field sampling dress
It sets, has leakproofness good, the leakage of gas or outside air can effectively be avoided to enter to pollute sample gas；Structure is simple, system
Cause this low advantage.
To achieve the goals above, the utility model uses following technical scheme:
A kind of transformer methane gas site sampling device, including air extractor, the first connecting tube and communicating pipe, pumping dress
It sets and is equipped with the first air exhaust head, communicating pipe includes the first interconnected port, the second port and third connectivity mouth；Described first connects
Adapter tube one end is connected to the first port, and the first connecting tube other end is equipped with the jointing for connecting with Buchholz relay, the
Two ports are connected to the first air exhaust head, and third connectivity mouth is equipped with elastic packing plug.It, can be to change by implementing above-mentioned technical proposal
Depressor methane gas carries out field sampling.The jointing can use quick coupling in the prior art, can both guarantee
The quick connection of device may be implemented in leakproofness again.The air extractor can produce negative pressure, and gas is sucked air extractor.Institute
It states elastic packing plug to stopper in third connectivity mouth, can be replaced, can both guarantee the syringe needle insertion for sampling needle tubing, it both can be with
Guarantee the syringe needle insertion of sampling needle tubing, and can guarantee the air-tightness of device when the syringe needle for sampling needle tubing is extracted.Use the present apparatus
When carrying out gas sample, the collector box sample connection of jointing and transformer is connected, air extractor is pulled, works as air extractor
When interior entrance liquid, illustrate that gas has emptied in collector box, close the switch on collector box sample connection, waits the first connecting tube
After interior liquid enters air extractor, by the syringe needle insertion elastic packing plug for sampling needle tubing, suitable under test gas is taken out；It will
Under test gas in sampling needle tubing is injected into detecting instrument and is detected.
Preferably, the air extractor includes exhaust tube and piston rod, what first air exhaust head was connected to exhaust tube,
Piston rod one end is equipped with piston head, and the exhaust tube and piston head are slidably connected, and exhaust tube is equipped with graduation mark.The exhaust tube
All-transparent is partially transparent, it can be observed that exhaust tube piston head position, can read internal gas volume.Pull piston rod can
So as to generate negative pressure in exhaust tube, realizes air extracting function, the gas volume in exhaust tube can be read by graduation mark.
Preferably, the exhaust tube is equipped with the second air exhaust head being connected to exhaust tube, the jointing is equipped with
Three-way connection, first connecting tube are connected to by three-way connection with jointing, and three-way connection includes interconnected first
Interface, second interface and third interface, first interface are connected to the first connecting tube, and second interface is connected to jointing, third
Interface is connected to by the second connecting tube with the second air exhaust head, and the third interface is equipped with switch valve.By implementing above-mentioned technology
Scheme, it is ensured that for the liquid in the first connecting tube completely into exhaust tube, the gas that can fix really measurement Buchholz relay is total
Amount.First connecting tube caliber is smaller, and transformer oil viscosity is larger, and when the switch on collector box sample connection is closed, first connects
One end that adapter tube is equipped with jointing is closed, due to draught head principle, connect the liquid in the first connecting tube be difficult completely into
In exhaust tube, cause gas volume measurement inaccurate.When there is liquid in the drained connecting tube of gas in collector box, collector box is closed
Switch on sample connection, then turns on the switch valve, is connected to second connecting tube with the first connecting tube, can be in collector box
Switch on sample connection is formed into a loop when closing, and the height and second of the liquid in the first connecting tube and gas interface connects at this time
Liquid in adapter tube is different from the height of gas interface, forms difference in height, to keep the pressure at two interfaces different, liquid can be with
Reflux is formed, fully flows into liquid in exhaust tube.After liquid is completely into exhaust tube, gas volume V in exhaust tube is read2,
By V2With the gas volume V in the device connecting tube and other gaps demarcated in advance1It is added, obtains surveying gas volume VAlways.Then will
It samples in the syringe needle insertion elastic packing plug of needle tubing, takes out suitable under test gas；The injection of the under test gas in needle tubing will be sampled
It is detected to detecting instrument.
Preferably, the jointing is equipped with air valve.The air valve can close after the gas in collector box is drained
It closes, can be removed jointing after closing air valve, device is transferred to other places and carries out other steps.
Preferably, the piston head is equipped with card slot, sealing ring, the sealing ring inside and piston head are equipped in card slot
Contact, sealing ring outside are contacted with pumping inside pipe wall.The structure can guarantee the leakproofness of sampler.
Preferably, first connecting tube is transparent pipe.It can be observed that the first connecting tube the case where, guarantee gas collection
Gas in box is fully drawn out, while when guaranteeing reading, the liquid in the first connecting tube is emptied completely.
Preferably, the piston rod, which is equipped with, pulls part, one end opposite with piston head is arranged in the part that pulls.Institute
The movement for piston rod of structure being stated when can be convenient pumping.
Preferably, the elastic packing plug material is rubber.The elastic packing plug uses rubber material, can both protect
The syringe needle insertion of card sampling needle tubing, and can guarantee the air-tightness of device when the syringe needle for sampling needle tubing is extracted.
A kind of transformer methane gas field sampling method, using a kind of transformer methane gas site sampling device, packet
Include following steps:
A. solid measure:
A1. jointing is put into measurement liquid, opens air valve 7 and pull piston rod, makes device various pieces full of survey
Determine liquid；
A2. shift piston rod onto bottom, guarantee that exhaust tube does not measure liquid, guarantee connecting tube and and device other between
Full of measurement liquid in gap；
A3. air valve is closed, jointing is taken out from measurement liquid；
A4. air valve is opened, piston rod is pulled, all measurement liquid is made to enter exhaust tube；
A5. exhaust tube liquid volume is read, gap gas volume V is denoted as1；
B. it connects: the collector box sample connection of jointing and transformer being connected, the air valve of jointing is opened, open
Switch on collector box sample connection；
C. air-breathing: piston rod is pulled, so that under test gas is entered exhaust tube, stops when occurring continuous liquid in connecting tube
Air-breathing closes the air valve on jointing；
D. it stands: a period of time will be stood, liquid in pipe to be connected fully enters exhaust tube；
E. it reads: after in connecting tube without liquid, reading the gas volume V of exhaust tube2；
F. it calculates: calculating under test gas volume VAlways, VAlways=V1+V2；
G. it samples: by the syringe needle insertion elastic packing plug for sampling needle tubing, taking out suitable under test gas；
H. it detects: the under test gas sampled in needle tubing being injected into detecting instrument and is detected.
By implementing above-mentioned technical proposal, the sealing of field sampling can be guaranteed to transformer methane gas field sampling
Effect, while can accurately measure the gas gross in collector box.
Preferably, it is further comprising the steps of, between step c and step d:
I. it is detached from: jointing is removed from collector box, carry out step d after being transferred to suitable position.
By implementing above-mentioned technical proposal, after sampler being fully entered with the gas in collector box, collector box is closed
Device, is removed the environment for taking to and being more suitable for doing experiment and tested, avoid being chronically near relay by switch, to reduction people
The hidden danger of body safety.
The beneficial effects of the utility model are: (1) has leakproofness good, the leakage of gas can be effectively avoided, or extraneous
Air enters to pollute sample gas；(2) gas gross of really measurement Buchholz relay can be fixed；(3) structure is simple, manufacturing cost
Low advantage；(4) device can be removed to the environment for taking to and being more suitable for doing experiment to test, avoids being chronically at relay attached
It is closely operated, to the hidden danger for reducing personal safety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: air extractor 1, exhaust tube 1.1, piston rod 1.2, the first air exhaust head 1.3, piston head 1.4, graduation mark 1.5,
Second air exhaust head 1.6, communicating pipe 3, the first port 3.1, the second port 3.2, third connectivity mouth 3.3, connects first connecting tube 2
First 4, elastic packing plug 5, three-way connection 6, first interface 6.1, second interface 6.2, third interface 6.3, air valve 7, card slot 8, close
Seal 9, pulls part 11, switch valve 12 at second connecting tube 10.
Specific embodiment
The utility model is further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of transformer methane gas site sampling device, including air extractor 1,2 and of the first connecting tube
Communicating pipe 3, air extractor 1 are equipped with the first air exhaust head 1.3, and communicating pipe 3 includes that the first interconnected port 3.1, second is logical
Mouth 3.2 and third connectivity mouth 3.3；Described first connecting tube, 2 one end is connected to the first port 3.1, and 2 other end of the first connecting tube is equipped with
Jointing 4 for connecting with collector box, the second port 3.2 are connected to the first air exhaust head 1.3, and third connectivity mouth 3.3 is equipped with
Elastic packing plug 5.By implementing above-mentioned technical proposal, field sampling can be carried out to transformer methane gas.It is described to connect
First 4 can use quick coupling in the prior art, can not only guarantee leakproofness but also the quick connection of device may be implemented.It is described
Elastic packing plug 5 stoppers in third connectivity mouth 3.3, can be replaced, and can not only guarantee the syringe needle insertion for sampling needle tubing, but also can
The air-tightness of device when guaranteeing that the syringe needle of sampling needle tubing is extracted.Using the present apparatus carry out gas sample when, by jointing 4 with
The collector box sample connection of transformer connects, and pulls air extractor 1, illustrates in collector box when entering liquid in air extractor 1
Gas has emptied, and closes the switch on collector box sample connection, after waiting the liquid in the first connecting tube 2 to enter air extractor 1,
By in the syringe needle insertion elastic packing plug 5 for sampling needle tubing, suitable under test gas is taken out；The note of the under test gas in needle tubing will be sampled
Detecting instrument is mapped to be detected.
The air extractor 1 includes exhaust tube 1.1 and piston rod 1.2, and first air exhaust head 1.3 connects with exhaust tube 1.1
Logical, 1.2 one end of piston rod is equipped with piston head 1.4, and the exhaust tube 1.1 and piston head 1.4 are slidably connected, on exhaust tube 1.1
Equipped with graduation mark 1.5.Exhaust tube 1.1 all-transparent or partially transparent, it can be observed that 1.1 piston head position of exhaust tube, it can
To read internal gas volume.It pulls piston rod 1.2 that can make to generate negative pressure in exhaust tube, realizes air extracting function, pass through quarter
Degree line 1.5 can read the gas volume in exhaust tube 1.1.
The exhaust tube 1.1 is equipped with the second air exhaust head 1.6 being connected to exhaust tube 1.1, and the jointing 4 is equipped with
Three-way connection 6, first connecting tube 2 are connected to by three-way connection 6 with jointing 4, and three-way connection 6 includes being interconnected
First interface 6.1, second interface 6.2 and third interface 6.3, first interface 6.1 are connected to the first connecting tube 2, second interface 6.2
It is connected to jointing 4, third interface 6.3 is connected to by the second connecting tube 10 with the second air exhaust head 1.6, the third interface
6.3 are equipped with switch valve 12.By implementing above-mentioned technical proposal, it is ensured that the liquid in the first connecting tube 2 is completely into pumping
Tracheae 1.1 can fix the gas gross of really measurement Buchholz relay.First connecting tube, 2 caliber is smaller, and transformer oil viscosity compared with
Greatly, when the switch on collector box sample connection is closed, one end that the first connecting tube 2 is equipped with jointing 4 is closed, due to draught head
Principle connects the liquid in the first connecting tube 2 and is difficult completely into exhaust tube 1.1, causing gas volume measurement inaccurate.Work as collection
Gas is drained in gas box, when occurring liquid in connecting tube, closes the switch on collector box sample connection, then turns on the switch valve
12, it is connected to second connecting tube 10 with the first connecting tube 2, can be formed when the switch on collector box sample connection is closed
Circuit, the at this time height and liquid and gas interface in the second connecting tube 10 of the liquid in the first connecting tube 2 and gas interface
Height it is different, form difference in height, to keep the pressure at two interfaces different, liquid can form reflux, flow liquid completely
Enter in exhaust tube 1.1.After liquid is completely into exhaust tube 1.1, gas volume V in exhaust tube 1.1 is read2, by V2With prior calibration
The first connecting tube of device 2 and other gaps in gas volume V1It is added, obtains surveying gas volume VAlways.Then needle tubing will be sampled
Syringe needle insertion elastic packing plug 5 in, take out suitable under test gas；The under test gas sampled in needle tubing is injected into detector
Device is detected.
The jointing 4 is equipped with air valve 7.The air valve 7 can close after the gas in collector box is drained, close
Jointing 4 can be removed after air valve 7, device is transferred to other places and carries out other steps.
The piston head 1.4 is equipped with card slot 8, and sealing ring 9,9 inside of sealing ring and piston head are equipped in card slot 8
1.4 contacts, 9 outside of sealing ring are contacted with 1.1 inner wall of exhaust tube.The structure can guarantee the leakproofness of sampler.
First connecting tube 2 is transparent pipe.It can be observed that the first connecting tube 2 the case where, guarantee collector box in
Gas is fully drawn out, while when guaranteeing reading, the liquid in the first connecting tube 2 is emptied completely.
The piston rod 1.2 is equipped with and pulls part 11, and one end opposite with piston head 1.4 is arranged in the part 11 that pulls.
The movement of piston rod 1.2 when the structure can be convenient pumping.
5 material of elastic packing plug is rubber.The elastic packing plug 5 uses rubber material, can both guarantee to sample
The syringe needle of needle tubing is inserted into, and can guarantee the air-tightness of device when the syringe needle for sampling needle tubing is extracted.
A kind of transformer methane gas field sampling method is filled using a kind of above-mentioned transformer methane gas field sampling
It sets, comprising the following steps:
A. solid measure:
A1. jointing 4 is put into measurement liquid, opens air valve 7 and pull piston rod 1.2, fills device various pieces
Completely measure liquid；
A2. it shifts piston rod 1.2 onto bottom, guarantees that exhaust tube 1.1 does not measure liquid, guarantee connecting tube and and device
Full of measurement liquid in other gaps；
A3. air valve 7 is closed, jointing 4 is taken out from measurement liquid；
A4. air valve 7 is opened, piston rod 1.2 is pulled, all measurement liquid is made to enter exhaust tube 1.1；
A5. 1.1 liquid volume of exhaust tube is read, gap gas volume V is denoted as1；
B. it connects: jointing 4 is connect with the collector box sample connection of transformer, open the air valve 7 of jointing 4,
Open the switch on collector box sample connection；
C. air-breathing: piston rod 1.2 is pulled, so that under test gas is entered exhaust tube 1.1, to occur continuous liquid in connecting tube
When stop suction, close jointing 4 on air valve 7；
D. it stands: a period of time will be stood, liquid in pipe to be connected fully enters exhaust tube 1.1；
E. it reads: after in connecting tube without liquid, reading the gas volume V of exhaust tube 1.12；
F. it calculates: calculating under test gas volume VAlways, VAlways=V1+V2；
G. it samples: by the syringe needle insertion elastic packing plug 5 for sampling needle tubing, taking out suitable under test gas；
H. it detects: the under test gas sampled in needle tubing being injected into detecting instrument and is detected.
By implementing above-mentioned technical proposal, the sealing of field sampling can be guaranteed to transformer methane gas field sampling
Effect, while can accurately measure the gas gross in collector box.
It is further comprising the steps of, between step c and step d:
I. it is detached from: jointing 4 is removed from collector box, carry out step d after being transferred to suitable position.
By implementing above-mentioned technical proposal, after sampler being fully entered with the gas in collector box, collector box is closed
Device, can be removed the environment for taking to and being more suitable for doing experiment and tested by switch, avoid being chronically at relay progress nearby
Operation, to the hidden danger for reducing personal safety.
The beneficial effects of the utility model are: having leakproofness good, leakage or the outside air of gas can be effectively avoided
Into to pollute sample gas；The gas gross of really measurement Buchholz relay can be fixed；The advantages such as structure is simple, and manufacturing cost is low；
Device can be removed to the environment for taking to and being more suitable for doing experiment to test, avoid being chronically at relay and nearby operated,
To the hidden danger for reducing personal safety.
Claims (6)
1. a kind of transformer methane gas site sampling device, characterized in that including air extractor, the first connecting tube and be connected to
Pipe, air extractor are equipped with the first air exhaust head, and communicating pipe includes the first interconnected port, the second port and third connectivity mouth；
First connecting tube one end is connected to the first port, and the first connecting tube other end is equipped with the company for connecting with Buchholz relay
Connector, the second port are connected to the first air exhaust head, and third connectivity mouth is equipped with elastic packing plug；The air extractor includes pumping
Pipe and piston rod, first air exhaust head are connected to exhaust tube, and the exhaust tube is equipped with the second pumping being connected to exhaust tube
Head, the jointing are equipped with three-way connection, and first connecting tube is connected to by three-way connection with jointing, and three connect
Head includes interconnected first interface, second interface and third interface, and first interface is connected to the first connecting tube, second interface
It is connected to jointing, third interface is connected to by the second connecting tube with the second air exhaust head, and the third interface is equipped with switch
Valve.
2. a kind of transformer methane gas site sampling device according to claim 1, characterized in that the piston rod one
End is equipped with piston head, and the exhaust tube and piston head are slidably connected, and exhaust tube is equipped with graduation mark.
3. a kind of transformer methane gas site sampling device according to claim 1, characterized in that the jointing
It is equipped with air valve.
4. a kind of transformer methane gas site sampling device according to claim 2, characterized in that on the piston head
Equipped with card slot, it is equipped with sealing ring in card slot, is contacted on the inside of the sealing ring with piston head, is connect on the outside of sealing ring with pumping inside pipe wall
Touching.
5. a kind of transformer methane gas site sampling device according to claim 1 or 2 or 3, characterized in that described
One connecting tube is transparent pipe.
6. a kind of transformer methane gas site sampling device according to claim 1 or 2 or 3, characterized in that the bullet
Property sealing-plug material be rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821493745.6U CN209296398U (en) | 2018-09-12 | 2018-09-12 | A kind of transformer methane gas site sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821493745.6U CN209296398U (en) | 2018-09-12 | 2018-09-12 | A kind of transformer methane gas site sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209296398U true CN209296398U (en) | 2019-08-23 |
Family
ID=67652960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821493745.6U Expired - Fee Related CN209296398U (en) | 2018-09-12 | 2018-09-12 | A kind of transformer methane gas site sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209296398U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459280A (en) * | 2018-09-12 | 2019-03-12 | 国家电网有限公司 | A kind of transformer methane gas site sampling device and method |
| CN111795868A (en) * | 2020-07-08 | 2020-10-20 | 广东电网有限责任公司 | Gas collecting device and using method thereof |
| CN112461999A (en) * | 2020-11-12 | 2021-03-09 | 广西桂林金秉航科技有限公司 | Automatic detection gas collection box for transformer gas and use method thereof |
-
2018
- 2018-09-12 CN CN201821493745.6U patent/CN209296398U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459280A (en) * | 2018-09-12 | 2019-03-12 | 国家电网有限公司 | A kind of transformer methane gas site sampling device and method |
| CN109459280B (en) * | 2018-09-12 | 2021-03-23 | 国家电网有限公司 | Transformer gas on-site sampling device and method |
| CN111795868A (en) * | 2020-07-08 | 2020-10-20 | 广东电网有限责任公司 | Gas collecting device and using method thereof |
| CN111795868B (en) * | 2020-07-08 | 2022-04-12 | 广东电网有限责任公司 | Gas collecting device and using method thereof |
| CN112461999A (en) * | 2020-11-12 | 2021-03-09 | 广西桂林金秉航科技有限公司 | Automatic detection gas collection box for transformer gas and use method thereof |
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| GR01 | Patent grant | ||
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Granted publication date: 20190823 Termination date: 20200912 |