CN207881909U - A kind of generating set hydrogen system leak detecting device - Google Patents
A kind of generating set hydrogen system leak detecting device Download PDFInfo
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- CN207881909U CN207881909U CN201721772121.3U CN201721772121U CN207881909U CN 207881909 U CN207881909 U CN 207881909U CN 201721772121 U CN201721772121 U CN 201721772121U CN 207881909 U CN207881909 U CN 207881909U
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- generating set
- outlet
- hydrogen system
- helium
- hydrogen
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Abstract
The utility model discloses a kind of generating set hydrogen system leak detecting device, the outlet of compressed air reservoir and the outlet of helium storage tank are connected with the carbon dioxide entrance of generating set, and the carbon dioxide inlet of generating set is provided with first manual valve；The cooling water inlet of stator bar is divided into two-way in generating set, it is wherein provided with the first isolation closure plate on the way, another way is connected with one end of gas piping, the other end of gas piping is connected with the outlet of compressed air reservoir and the outlet of helium storage tank, is provided with the second isolation closure plate in generating set at the cooling water outlet of stator bar；The detection probe of helium Mass Spectrometer Method instrument is located at each test point of generating set hydrogen system, which can realize the leakage situation detection of generating set hydrogen system, and convenient and simple for operation, pollution-free.
Description
Technical field
The utility model is related to a kind of leak detecting devices, and in particular to a kind of generating set hydrogen system leak detection dress
It sets.
Background technology
Number thermal power generator big absolutely domestic at present is all made of the water hydrogen type of cooling, i.e. generator unit stator line group is water cooling
But, rotor line group is cooling inside hydrogen, and iron core and other components are hydrogen_cooling, and hydrogen is by the rotary propeller type mounted in two ends of rotor
Fan forced circulation, and cooled down by the way that two groups of hydrogen coolers are arranged at the top of out frame.Hydrogen gas system is by generator
Stator casing, end cap, hydrogen cooler, sealing bearing bush, sealing oil system and hydrogen pipeline constitute totally-enclosed airtight construction.Mesh
Before, since many reasons cause generator hydrogen gas system to leak, directly influence the safe operation of generating set, hydrogen gas leakage one
It is directly a great problem of the domestic electricity power enterprise's unit safety stable operation of puzzlement.
After generating set leaks hydrogen, then there is following harm, 1) due to hydrogen gas leakage, hydrogen pressure cannot during generating set is run
It is guaranteed, to influence the output of generating set；2) cause generator hydrogen humidity excessive or generator water inlet, into
Oil causes alternate or shorted to earth accident, causes generator scaling loss to damage the insulation of generator stator and rotor line group when serious；
3) consumption amounts of hydrogen is big, causes operating cost excessively high；4) generator system may catch fire, explode, and cause equipment badly damaged.
Find that generator air leak position, which is summed up, after all two large divisions by our prolonged analysis and summaries：One
It is the leakage hydrogen of generator bulk junction component, second is that the leakage hydrogen of generator external subsystem.Hydrogen cooled generator body construction
The leakage hydrogen of component is related to four systems, including：The seal nipple that generator bar is connect with water-cooling system, generator sealing bearing bush and
The oil system of hydrogen side oil returning pipe joint, the circulation of hydrogen cooler of generator are generator manhole, end cap, hand hole, secondary
Measure port, outlet casing tube flange and the porcelain bushing shell inner sealing of lead-out wire, outlet hood, hydrogen-cooled device flange, rotor conducting rod etc.
Hydrogen-tight system.The leakage hydrogen of generator external subsystem includes hydrogen pipe valve and meter, hydrogen oil differential pressure adjustment system, hydrogen oil
Separator, hydrogen drying device, hydrogen humidity detection device, insulation overheat detection device etc..
The leakage of generating set hydrogen system is puzzlement generation current unit operation a great problem, since coverage is wider,
It is complicated to leak hydrogen reason, lookup reason is extremely difficult, domestic at present mainly using spary liquid soap detection leak source, this method limitation
It is very big, it needs largely to put into manpower, method falls behind, and it is difficult to search leak source；Furthermore freon leakage detection is used, since freon belongs to
The gas of ozone layer is destroyed, environment is polluted, national environmental protection does not allow to use, substantially be eliminated.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of generating set hydrogen system and lets out
Device for detecting leakage, the device can realize the leakage situation detection of generating set hydrogen system, and convenient and simple for operation, no dirt
Dye.
In order to achieve the above objectives, generating set hydrogen system leak detecting device described in the utility model, which is characterized in that
It lets out including compressed air reservoir, helium storage tank, gas piping and for detecting helium at each test point of generating set hydrogen system
Leak the helium Mass Spectrometer Method instrument of situation；
The outlet of compressed air reservoir and the outlet of helium storage tank are connected with the carbon dioxide entrance of generating set, power generation
The carbon dioxide inlet of unit is provided with first manual valve；
The cooling water inlet of stator bar is divided into two-way in generating set, wherein it is provided with the first isolation closure plate on the way,
Another way is connected with one end of gas piping, the outlet of the other end and compressed air reservoir of gas piping and helium storage tank
Outlet is connected, and is provided with the second isolation closure plate in generating set at the cooling water outlet of stator bar；
The detection probe of helium Mass Spectrometer Method instrument is located at each test point of generating set hydrogen system.
The entrance of hydrogen system and outlet are respectively provided with the first valve and the second valve in generating set.
Third valve is provided on gas piping.
The utility model has the advantages that：
Generating set hydrogen system leak detecting device described in the utility model is when specific operation, first to generating set
It is filled with compressed air in carbon dioxide inlet and stator bar, then again to the carbon dioxide inlet of generating set and stator
It is filled with helium in bar, recycles the helium leakage of each inspection positions in helium Mass Spectrometer Method instrument detection generating set hydrogen system
Then situation judges whether generating set hydrogen system leaks, operation side according to the leakage situation of each inspection positions helium
Just, simply, and pollution-free, accuracy of detection is higher.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model part；
Fig. 2 is the structural schematic diagram of the utility model another part.
Wherein, 1 it is helium Mass Spectrometer Method instrument, 2 be the first valve, 3 be first manual valve, 4 be gas piping, 5 is
One isolation closure plate, 6 be the second isolation closure plate, 7 be bar, 8 be the second valve.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1 and Fig. 2, generating set hydrogen system leak detecting device described in the utility model includes compressed air storage
Tank, helium storage tank, gas piping 4 and the helium mass spectrum for detecting helium leakage situation at each test point of generating set hydrogen system
Detecting instrument 1；The outlet of compressed air reservoir and the outlet of helium storage tank are connected with the carbon dioxide entrance of generating set, hair
The carbon dioxide inlet of motor group is provided with first manual valve 3；The cooling water inlet of stator bar 7 is divided into generating set
Two-way, wherein being provided with the first isolation closure plate 5 on the way, another way is connected with one end of gas piping 4, gas piping 4
The other end is connected with the outlet of compressed air reservoir and the outlet of helium storage tank, the cooling water of stator bar 7 in generating set
Exit is provided with the second isolation closure plate 6；The detection probe of helium Mass Spectrometer Method instrument 1 is located at each detection of generating set hydrogen system
At point.
The entrance of hydrogen system and outlet are respectively provided with the first valve 2 and the second valve 8 in generating set；Gas piping
Third valve is provided on 4.
The specific operation process of the utility model includes in the outer leak detection of generating set hydrogen system and generating set hydrogen system
Leak detection；
The outer leak detection of the generating set hydrogen system includes the following steps：
11) the first valve 2 and the second valve 8 are closed, by compressed air reservoir to the carbon dioxide entrance of generating set
It is inside filled with compressed air, then helium is filled with to the carbon dioxide inlet of generating set by helium storage tank, is turned off first-hand
Movable valve 3；
12) generating set hydrogen system is detected respectively by helium Mass Spectrometer Method instrument 1 respectively to leak outside inspection positions helium leakage
The case where, further according to generating set hydrogen system respectively leak outside inspection positions helium leakage the case where judge that generating set hydrogen system is
No generation external leakage；
The generating set hydrogen system inner hexagon includes the following steps：
21) compressed air reservoir through gas piping 4 inflated compressed air into the stator bar 7 of generator, then pass through helium
Gas storage tank inflates helium into the stator bar 7 of generating set；Close third valve；
22) the leakage feelings of helium at each inner hexagon position of generating set hydrogen system are detected by helium Mass Spectrometer Method instrument 1
Then whether condition judges generating set hydrogen system according to the leakage situation of helium at each inner hexagon position of generating set hydrogen system
Internal leakage occurs.
Wherein, the quality for the compressed air being filled in step 21) and step 22) is 2-3kg；Step 21) and step 22) are filled
The pressure of the helium entered is 0.1MPa.
The leakage test position of hydrogen system includes hydrogen inlet manifold road, the hydrogen of generating set in generating set in step 12)
Gas output channel, the flange on hydrogen inlet manifold road and instrument, the flange on hydrogen output channel and instrument, hydrogen oil differential pressure regulation
System, hydrogen oil eliminator, hydrogen drying unit, hydrogen humidity detection device, insulation overheat detection device, sealing bearing bush, Seal Oil are chosen
Mouth and engine block.
The inner hexagon position of generating set hydrogen system includes the water power connecting tube of generating set, generator in step 22)
System, outlet casing tube and magnetosheath pipe inner sealing, outlet hood, rotor wire bar, bar slot box and bar sealing in the water of bar 7
Connector.
When the arbitrary test point of generating set hydrogen system leaks, then leaked gas is sucked by helium by detection probe
In Mass Spectrometer Method instrument, molecular pump detects helium gas molecules amount in helium Mass Spectrometer Method instrument, to obtain the data of leakage.
Claims (3)
1. a kind of generating set hydrogen system leak detecting device, which is characterized in that including compressed air reservoir, helium storage tank, gas
Body pipeline (4) and helium Mass Spectrometer Method instrument (1) for detecting helium leakage situation at each test point of generating set hydrogen system；
The outlet of compressed air reservoir and the outlet of helium storage tank are connected with the carbon dioxide entrance of generating set, generating set
Carbon dioxide inlet be provided with first manual valve (3)；
The cooling water inlet of stator bar (7) is divided into two-way in generating set, wherein being provided with the first isolation closure plate on the way
(5), another way is connected with one end of gas piping (4), the outlet of the other end and compressed air reservoir of gas piping (4) and
The outlet of helium storage tank is connected, and is provided with the second isolation closure plate in generating set at the cooling water outlet of stator bar (7)
(6)；
The detection probe of helium Mass Spectrometer Method instrument (1) is located at each test point of generating set hydrogen system.
2. generating set hydrogen system leak detecting device according to claim 1, which is characterized in that hydrogen system in generating set
The entrance of system and outlet are respectively provided with the first valve (2) and the second valve (8).
3. generating set hydrogen system leak detecting device according to claim 1, which is characterized in that on gas piping (4)
It is provided with third valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721772121.3U CN207881909U (en) | 2017-12-18 | 2017-12-18 | A kind of generating set hydrogen system leak detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721772121.3U CN207881909U (en) | 2017-12-18 | 2017-12-18 | A kind of generating set hydrogen system leak detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207881909U true CN207881909U (en) | 2018-09-18 |
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ID=63502928
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721772121.3U Active CN207881909U (en) | 2017-12-18 | 2017-12-18 | A kind of generating set hydrogen system leak detecting device |
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| Country | Link |
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| CN (1) | CN207881909U (en) |
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 |
| CN113984304A (en) * | 2021-12-28 | 2022-01-28 | 河南氢枫能源技术有限公司 | Hydrogen energy equipment test system and test method |
-
2017
- 2017-12-18 CN CN201721772121.3U patent/CN207881909U/en active Active
Cited By (3)
| 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 |
| CN113984304A (en) * | 2021-12-28 | 2022-01-28 | 河南氢枫能源技术有限公司 | Hydrogen energy equipment test system and test method |
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