CN209311159U - Inner cold water case hydrogen leakage monitor cycle sampling device - Google Patents
Inner cold water case hydrogen leakage monitor cycle sampling device Download PDFInfo
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- CN209311159U CN209311159U CN201821907347.4U CN201821907347U CN209311159U CN 209311159 U CN209311159 U CN 209311159U CN 201821907347 U CN201821907347 U CN 201821907347U CN 209311159 U CN209311159 U CN 209311159U
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- air inlet
- flowmeter
- gas outlet
- leakage monitor
- hydrogen leakage
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Abstract
Inner cold water case hydrogen leakage monitor cycle sampling device, inner cold water case hydrogen leakage monitor cycle sampling device, including air inlet pipeline, first flowmeter, hydrogen leakage monitor probe, aspiration pump, reflux gas circuit, second flowmeter, aerial drainage bypass；One end of air inlet pipeline is equipped with air inlet, the air inlet of the other end connection first flowmeter of air inlet pipeline, the air inlet of the gas outlet connection hydrogen leakage monitor probe of first flowmeter, the air inlet of the gas outlet connection aspiration pump of hydrogen leakage monitor probe, the gas outlet of aspiration pump connects backflow gas road air inlet, the other end for the gas circuit that flows back is gas outlet, aerial drainage bypass is equipped with second flowmeter, the gas outlet of the air inlet connection air inlet pipeline of aerial drainage bypass, the air inlet of the gas outlet connection aspiration pump of aerial drainage bypass；First flow is calculated as the flowmeter of regulating flow quantity.The utility model realizes the real-time online cycle detection of inner cold water case leakage hydrogen, and no dead zone, blind area, data are effective in real time, and structure is simple, is easily installed.
Description
Technical field
The utility model belongs to hydrogen cooled generator technical field, and in particular to circulation when a kind of inner cold water case hydrogen leakage monitor
Sampler.
Background technique
Water hydrogen cooling generator group, [water] be stator winding and outlet using (stator is cooling) internal water cooling is but；
[hydrogen] is rotor windings using internal hydrogen cooling；[hydrogen] is stator core and rotor body is the working method of hydrogen outer cooling.Therefore,
Generator is equipped with hydrogen system, water- cooling generator and sealing oil system (to prevent hydrogen from leaking out from axle envelope).
Since hydrogen has very strong permeability, in the case where the sealing of certain generator cooling systems is undesirable, power generation
Hydrogen in machine can leak into outside generator body or in stator winding inner cold water, mean that hydrogen humidity increases when hydrogeneous in inner cold water
Add.
Generator Hydrogen Leakage monitoring device is to guarantee the important monitoring device of hydrogen cooled generator safe operation, and the object of monitoring is
The leakproofness of stator winding internal water cooling system and its enclosed busbar and sealing oil system.The monitoring of its grey water system is most important, by
It is higher than hydraulic pressure in generator hydrogen pressure, when cooling water in stator system has leakage failure, there should be hydrogen evolution in cooling water in stator case.
Hydrogen leakage failure in inner cold water may be caused by being worn as bar insulation and copper wire, it is also possible to be that water swivel sealing is lost
Caused by effect, other reasons such as weld seam snaps, insulating water inlet pipe damages, since various leakage failures may all cause phase fault
Accident or shorted to earth accident, thus once detect that water- cooling generator leakage hydrogen amount increases, it is meant that serious accident omen,
So the important function that there is Generator Hydrogen Leakage monitoring device real-time monitoring and initial failure to alarm.Basic demand to the device
Be can long-term stable operation, failure is not reported by mistake, is not failed to report.
25 counter to arrange (25 important requirements for preventing power generation accident) to provide, hydrogen cooled generator should add
Fill hydrogen leakage monitor sampler.It is reported that most of each power plant's hydrogen cooled generator in China is configured with hydrogen leakage monitor device at present,
In terms of the hydrogen leakage monitor of inner cold water case, most of existing hydrogen leakage monitor sampler uses diffusion type, the hydrogen in inner cold water
Gas oneself spilling floats up at inner cold water case hydrogen leakage monitor probe.Such sample mode, when inner cold water case dead zone hydrogen out of the ordinary
When gas is assembled, there can be phenomenon of the monitoring less than data and data inaccuracy.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of circulation of electric generator inner cooling water tank hydrogen leakage monitor
Sampler, gas sampled is untrue caused by which can avoid the dead zone hydrogen aggregation out of the ordinary of inner cold water case,
And then the true problem of monitoring probe prohibited data detection.
The technical solution adopted in the utility model is inner cold water case hydrogen leakage monitor cycle sampling device, including air inlet pipeline,
First flowmeter, hydrogen leakage monitor probe, aspiration pump, reflux gas circuit, second flowmeter, aerial drainage bypass；
One end of air inlet pipeline be equipped with air inlet, air inlet pipeline the other end connection first flowmeter air inlet, first
The air inlet of the gas outlet connection hydrogen leakage monitor probe of flowmeter, the air inlet of the gas outlet connection aspiration pump of hydrogen leakage monitor probe
Mouthful, the gas outlet of aspiration pump connects backflow gas road air inlet, and the other end for the gas circuit that flows back is gas outlet, and aerial drainage bypass is equipped with the
Two flowmeters, aerial drainage bypass air inlet connection air inlet pipeline gas outlet, aerial drainage bypass gas outlet connection aspiration pump into
Port；First flow is calculated as the flowmeter of regulating flow quantity；
Second flow is calculated as the flowmeter of regulating flow quantity；
Aspiration pump is anti-explosion membrane pump；
Hydrogen leakage monitor probe is suitable for diffused and leaks hydrogen detection probe.
It in the utility model, is provided with aerial drainage and bypasses, gas sampled can be directly by the air inlet of sampler by explosion-proof
Pump is drawn into gas outlet, is provided with adjustable flow meter in parallel aerial drainage bypass, adjustable flow makes hydrogen leakage monitor pop one's head in
Possess stable sample flow.
Hydrogen leakage monitor probe is suitable for diffused and leaks hydrogen detection probe, for detecting the concentration of hydrogen.
Aspiration pump is located at gas circuit tail portion, and entire air-channel system is made to keep certain negative pressure, prevents tested gas leak.It considers
The explosivity of hydrogen, aspiration pump are explosion-proof pump, long-term safety can reliably be worked in danger zone.
Working mechanism: inner cold water case hydrogen leakage monitor cycle sampling device air inlet, gas outlet and inner cold water case are connected,
Entire sampler is mounted on the top of inner cold water case.Aspiration pump is first turned on, the gas in inner cold water case is driven by aspiration pump,
It is flowed in pipe-line system through air inlet to gas outlet.Then the first adjustable flow meter is slowly opened, is opened in aerial drainage bypass
Second flowmeter makes hydrogen leakage monitor probe air inlet have stable sample throughput to flow through.When hydrogen leakage monitor probe replacement, the is closed
Flow meters.
The utility model extracts the gas in electric generator inner cooling water tank using explosion-proof pump is evacuated, and the gas of extraction is most
Inner cold water case is flowed back into again eventually, in this way, the gaseous environment in inner cold water case is allowed to recycle, flow, it is each to avoid inner cold water case
Other dead zone hydrogen aggregation, caused sampling gas is untrue, the true phenomenon of monitoring probe prohibited data detection.The utility model
The real-time online cycle detection of leakage hydrogen is realized, no dead zone, blind area, data are effective in real time.
Detailed description of the invention
Fig. 1 is the structure principle chart of the utility model.
Specific embodiment
As shown in Figure 1, the utility model inner cold water case hydrogen leakage monitor cycle sampling device, includes air inlet pipeline 2, first-class
Meter 3, hydrogen leakage monitor probe 5, aspiration pump 7, reflux gas circuit 6, second flowmeter 4, aerial drainage bypass 8；
One end of air inlet pipeline 2 is equipped with air inlet 1, and the other end of air inlet pipeline 2 connects the air inlet of first flowmeter 3,
The air inlet of the gas outlet connection hydrogen leakage monitor probe 5 of first flowmeter 3, the gas outlet of hydrogen leakage monitor probe connects aspiration pump 7
Air inlet, the gas outlet of aspiration pump 7 connects 6 air inlet of backflow gas road, and the other end for the gas circuit that flows back is gas outlet 9, when installation,
The top of inner cold water case is mounted on by air inlet 1 and gas outlet 9, aerial drainage bypass 8 is equipped with second flowmeter 4, aerial drainage bypass 8
Air inlet connection air inlet pipeline 2 gas outlet, aerial drainage bypass 8 gas outlet connection aspiration pump 7 air inlet；
First flowmeter 3 and second flowmeter 4 are the flowmeter of regulating flow quantity；
Aspiration pump 7 is pumped using anti-explosion membrane；
The applicable diffused of hydrogen leakage monitor probe 5 leaks hydrogen detection probe.
In the utility model, it is provided with aerial drainage bypass 8, gas sampled can be directly by air inlet 1 by the extraction of explosion-proof pump 7
To gas outlet 9, parallel aerial drainage bypasses and is provided with adjustable flow meter 4 on 8, and adjustable flow possesses hydrogen leakage monitor probe 5
Stable sample flow.
Hydrogen leakage monitor probe 5 is suitable for diffused and leaks hydrogen detection probe, for detecting the concentration of hydrogen.
Aspiration pump 7 is located at gas circuit tail portion, and entire air-channel system is made to keep certain negative pressure, prevents tested gas leak.Consider
To the explosivity of hydrogen, aspiration pump 7 is anti-explosion membrane pump, long-term safety can reliably be worked in danger zone.
Working mechanism: inner cold water case hydrogen leakage monitor cycle sampling device air inlet 1 and gas outlet 9 are connect with inner cold water case
Good, entire sampler is mounted on the top of inner cold water case.Aspiration pump 7 is first turned on, the gas in inner cold water case is by aspiration pump 7
It drives, is flowed in the pipe-line system through air inlet 1 to gas outlet 9.Then the first adjustable flow meter 3 is slowly opened, aerial drainage is opened
Second flowmeter 4 in bypass makes hydrogen leakage monitor 5 air inlets of probe have stable sample throughput to flow through.Hydrogen leakage monitor probe 5 is more
When changing, first flowmeter 3 is closed.
In the present embodiment, the first and second flowmeters equal 3 and 4 use suspended body flowmeter, have and adjust and show sample air-flow
The function of amount, easy to operate and long service life, aspiration pump 5 are pumped using anti-explosion membrane, in addition to energy stable operation, when non-maintaining
Between it is longer.
The present embodiment not makes any form of restriction the shape of the utility model, material, structure etc., all foundations
The technical essence of the utility model any simple modification, equivalent change and modification to the above embodiments, belong to this reality
With the protection scope of new technique scheme.
Claims (4)
1. inner cold water case hydrogen leakage monitor cycle sampling device, it is characterised in that: including air inlet pipeline, first flowmeter, leakage hydrogen prison
Probing head, aspiration pump, reflux gas circuit, second flowmeter, aerial drainage bypass；
One end of air inlet pipeline is equipped with air inlet, the air inlet of the other end connection first flowmeter of air inlet pipeline, first flow
The air inlet of the gas outlet connection hydrogen leakage monitor probe of meter, the air inlet of the gas outlet connection aspiration pump of hydrogen leakage monitor probe, takes out
The gas outlet of air pump connects backflow gas road air inlet, and the other end for the gas circuit that flows back is gas outlet, and aerial drainage bypass is equipped with second
Meter, the gas outlet of the air inlet connection air inlet pipeline of aerial drainage bypass, the air inlet of the gas outlet connection aspiration pump of aerial drainage bypass,
First flow is calculated as the flowmeter of regulating flow quantity.
2. inner cold water case hydrogen leakage monitor cycle sampling device according to claim 1, it is characterised in that: second flow is calculated as
The flowmeter of regulating flow quantity.
3. inner cold water case hydrogen leakage monitor cycle sampling device according to claim 2, it is characterised in that: aspiration pump is explosion-proof
Diaphragm pump.
4. inner cold water case hydrogen leakage monitor cycle sampling device according to claim 3, it is characterised in that: hydrogen leakage monitor probe
Hydrogen detection probe is leaked suitable for diffused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821907347.4U CN209311159U (en) | 2018-11-20 | 2018-11-20 | Inner cold water case hydrogen leakage monitor cycle sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821907347.4U CN209311159U (en) | 2018-11-20 | 2018-11-20 | Inner cold water case hydrogen leakage monitor cycle sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209311159U true CN209311159U (en) | 2019-08-27 |
Family
ID=67673619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821907347.4U Active CN209311159U (en) | 2018-11-20 | 2018-11-20 | Inner cold water case hydrogen leakage monitor cycle sampling device |
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| Country | Link |
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| CN (1) | CN209311159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113075509A (en) * | 2021-03-30 | 2021-07-06 | 中国大唐集团科学技术研究院有限公司中南电力试验研究院 | Online monitoring device and monitoring method for insulation of water and electricity connector of bar of internal water cooling generator |
-
2018
- 2018-11-20 CN CN201821907347.4U patent/CN209311159U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113075509A (en) * | 2021-03-30 | 2021-07-06 | 中国大唐集团科学技术研究院有限公司中南电力试验研究院 | Online monitoring device and monitoring method for insulation of water and electricity connector of bar of internal water cooling generator |
| CN113075509B (en) * | 2021-03-30 | 2024-03-15 | 中国大唐集团科学技术研究院有限公司中南电力试验研究院 | Insulation on-line monitoring device and monitoring method for water-cooled generator bar water-electricity connector |
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