CN213813533U - Hydrogen purity sampling and recovering device for thermal power plant - Google Patents
Hydrogen purity sampling and recovering device for thermal power plant Download PDFInfo
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- CN213813533U CN213813533U CN202023115108.5U CN202023115108U CN213813533U CN 213813533 U CN213813533 U CN 213813533U CN 202023115108 U CN202023115108 U CN 202023115108U CN 213813533 U CN213813533 U CN 213813533U
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Abstract
A hydrogen purity sampling and recovering device for a thermal power plant comprises a generator, a hydrogen purity meter and a hydrogen drier; the high-pressure area of the generator is connected with the input end of the hydrogen purity meter through a first pipeline, the output end of the hydrogen purity meter is connected with the low-pressure area of the generator through a second pipeline, and the second pipeline is communicated with the output end of the hydrogen dryer. On one hand, the utility model can add an extra pipeline on the basis of not changing the original hydrogen sampling pipeline, thereby realizing the cyclic utilization of hydrogen, greatly simplifying the structure, reducing the hydrogen supplementing frequency, saving time and labor and greatly reducing the cost; on the other hand, can utilize the high low-pressure region pressure differential that generator casing internal fan produced and the inside fan outlet pressure of hydrogen desicator when generator normal operating smoothly to retrieve the hydrogen of taking a sample to the generator in, need not additionally to set up delivery pump or fan etc. greatly reduced cost.
Description
Technical Field
The utility model relates to a technical field, especially a thermal power plant uses hydrogen purity sample recovery unit are retrieved in hydrogen sample.
Background
Because hydrogen is the gas with the lightest density, the heat conductivity coefficient is large, the cooling efficiency is high, and the hydrogen cooling technology is generally adopted by large and medium generators at present. However, as the generator operates, the purity of hydrogen inside the generator decreases and the humidity increases, a hydrogen system of the existing generator is provided with a hydrogen drying device and a hydrogen purity meter to ensure the dryness of the hydrogen in the generator and detect the purity of the hydrogen, and the generator can be safely operated only by performing a certain amount of pollution discharge according to daily detection conditions and supplementing fresh hydrogen with qualified purity. As shown in fig. 1: corresponding control valves K1, K3 and K4 are arranged on connecting pipelines of the generator, the hydrogen drying device and the hydrogen purity meter, and the gas in the generator can be discharged by opening the related control valves. During normal operation of the conventional generator, hydrogen continuously sampled by the hydrogen purity meter is directly discharged to the hydrogen discharge main pipe and then directly discharged to the atmosphere through the hydrogen discharge main pipe. On one hand, the sampling flow of the hydrogen purity meter is directly discharged into the atmosphere after being measured, so that the times of hydrogen supplement and the labor intensity of operators are greatly increased, the hydrogen leakage rate is increased, and the economical efficiency of a unit is reduced; on the other hand, the hydrogen produced by the existing thermal power plant is generally high in purity, and even if the purity of the hydrogen is reduced in the cooling process of the generator, the hydrogen can still meet the purity requirement of the generator on the hydrogen, and if the hydrogen is directly discharged to the atmosphere, the waste of energy and resources is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the above-mentioned not enough of prior art and providing a simplified structure, reduce and mend hydrogen frequency, labour saving and time saving, reduce cost's thermal power plant uses hydrogen purity sample recovery unit.
The technical scheme of the utility model is that: a hydrogen purity sampling and recovering device for a thermal power plant comprises a generator, a hydrogen purity meter and a hydrogen drier; the high-pressure area of the generator is connected with the input end of the hydrogen purity meter through a first pipeline, the output end of the hydrogen purity meter is connected with the low-pressure area of the generator through a second pipeline, and the second pipeline is communicated with the output end of the hydrogen dryer.
Further, the high-pressure area of the generator is also connected with a hydrogen dryer through a third pipeline, and the hydrogen dryer is connected with the low-pressure area of the generator through a fourth pipeline.
Further, the fourth pipeline is communicated with the second pipeline.
Further, the second pipe is connected to an outlet side of the internal fan of the hydrogen dryer.
Further, the output end of the hydrogen purity meter is connected to the outside through a fifth pipeline.
Further, all be equipped with the valve on first pipeline to the fourth pipeline.
Further, a valve is arranged on the fifth pipeline.
Furthermore, the output end of the hydrogen purity meter is connected with a three-way valve, and the output end of the three-way valve is respectively connected with the second pipeline and the fifth pipeline.
The utility model has the advantages that:
(1) on the basis of not changing the original hydrogen sampling pipeline, an additional pipeline, namely a second pipeline, is additionally arranged and connected between the output end of the hydrogen purity instrument and the output end of the hydrogen dryer, so that the cyclic utilization of the hydrogen can be realized, the structure is greatly simplified, the hydrogen supplement frequency is reduced, the time and the labor are saved, and the cost is greatly reduced;
(2) through with hydrogen purity appearance through first pipeline and second tube coupling between the high-pressure area and the low-pressure area of generator to with the output intercommunication of second pipeline and hydrogen desicator, can utilize the generator normal operating high low-pressure area pressure differential that the inside fan of generator housing produced and the inside fan exit pressure of hydrogen desicator smoothly retrieve the hydrogen of taking a sample to the generator in, need not additionally to set up delivery pump or fan etc. greatly reduced cost.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration;
fig. 2 is a block diagram schematically illustrating the structure of the embodiment of the present invention.
Detailed Description
The invention will be described in further detail with reference to the drawings and specific examples.
As shown in fig. 2: a hydrogen purity sampling and recovering device for a thermal power plant comprises a generator, a hydrogen purity meter and a hydrogen drier; the high-pressure area of the generator is connected with the input end of a hydrogen purity meter through a first pipeline L1, the output end of the hydrogen purity meter is connected with the low-pressure area of the generator through a second pipeline L2, and the second pipeline L2 is communicated with the output end of the hydrogen dryer.
The scheme has the following advantages: on one hand, on the basis of not changing the original hydrogen sampling pipeline, the embodiment can additionally provide a pipeline, namely a second pipeline, which is connected between the output end of the hydrogen purity meter and the output end of the hydrogen dryer, so that the cyclic utilization of the hydrogen can be realized, the structure is greatly simplified, the hydrogen supplement frequency is reduced, the time and the labor are saved, and the cost is greatly reduced; on the other hand, the hydrogen purity meter is connected between the high-pressure area and the low-pressure area of the generator through the first pipeline and the second pipeline, and the second pipeline is communicated with the output end of the hydrogen dryer, so that the sampled hydrogen can be smoothly recycled into the generator by utilizing the pressure difference of the high-pressure area generated by the fan inside the generator shell and the outlet pressure of the fan inside the hydrogen dryer when the generator normally operates, a conveying pump or a fan and the like do not need to be additionally arranged, and the cost is greatly reduced.
Specifically, the output end of the high-pressure area of the generator is mainly divided into two branches, one branch is connected with the input end of a hydrogen purity meter through a first pipeline L1, and qualified hydrogen is transmitted into the generator through a second pipeline L2 after the hydrogen purity meter detects the hydrogen. The other branch is connected with a hydrogen drier through a third pipeline L3, and then is connected with the low-pressure area of the generator through a fourth pipeline L4, so that the hydrogen output by the generator is dried through the hydrogen drier to meet the dryness required by the generator, and then is conveyed into the generator for utilization.
In this embodiment, the fourth line L4 communicates with the second line L2, and the fourth line L4 and the second line L2 are both connected to the outlet side of the internal fan of the hydrogen dryer, so that hydrogen is sent into the generator by the internal fan.
In this embodiment, the output end of the hydrogen purity meter is further connected to the outside through a fifth pipeline L5, that is: the output end of the hydrogen purity meter is also divided into two branches, one branch is connected with the second pipeline L2, hydrogen qualified in detection of the hydrogen purity meter returns to the generator for recycling, and the other branch is connected to the outside through the fifth pipeline L5, so that hydrogen unqualified in detection of the hydrogen purity meter is discharged to the atmosphere.
In this embodiment, the valves K1, K3 and K4 on the first line L1, the third line L3 and the fourth line L4 are unchanged from the existing structure, the valves are newly added on the second line L2 and the fifth line L5, and the valves are preferably electric valves or three-way electric valves. When the hydrogen purity meter is a three-way electric valve, the output end of the hydrogen purity meter is connected with the common input end of the three-way electric valve, and the output end of the three-way electric valve is respectively connected with the second pipeline and the fifth pipeline. Preferably, the electric valve of the present embodiment is a two-way valve, i.e. the valves K2 and K5 are provided on the second line L2 and the fifth line L5, respectively. And the valves K2 and K5 are both provided with a control system on the hydrogen system of the generator, and the existing control system is also electrically connected with a hydrogen purity meter, other valve generators and a hydrogen dryer.
The working principle of the embodiment is as follows: when the generator normally operates, the valves K1, K3 and K4 are opened, part of hydrogen in the generator is conveyed into the hydrogen dryer for drying, and the hydrogen is continuously returned into the generator after drying is finished, so that the increase of hydrogen humidity in the operation process of the generator is prevented, the dryness of the hydrogen meets the requirement, and the normal and stable operation of the generator is ensured; the other part of hydrogen enters a first pipeline L1, the hydrogen is sampled by a hydrogen purity meter to detect the purity of the hydrogen, if the purity meets the requirement, a valve K2 is opened, the hydrogen enters a second pipeline L2, and the hydrogen meeting the standard is conveyed into the generator by the pressure difference of a high-low pressure area generated by a fan inside the generator shell and the outlet pressure of the fan inside a hydrogen dryer for recycling, so that the generator can normally run. When the generator is subjected to hydrogen replacement, opening the valve K5, closing the valve K2, discharging low-purity hydrogen in the generator to the atmosphere through a fifth pipeline L5, and then supplementing high-purity hydrogen into the generator again; or after the shutdown, the residual hydrogen on the output side of the hydrogen purity meter is discharged to the atmosphere.
Through the device, former #3 of our factory, 4 unit generators calculate according to operation 300 days annually, through retrieving the back to hydrogen, will reduce nearly 2000 cubic meters hydrogen and arrange outward totally annually, practice thrift economic cost nearly 10 ten thousand yuan, effectively reduced the hydrogen filling frequency simultaneously, reduced personnel intensity of labour.
Claims (8)
1. A hydrogen purity sampling and recovering device for a thermal power plant is characterized by comprising a generator, a hydrogen purity meter and a hydrogen drier; the high-pressure area of the generator is connected with the input end of the hydrogen purity meter through a first pipeline, the output end of the hydrogen purity meter is connected with the low-pressure area of the generator through a second pipeline, and the second pipeline is communicated with the output end of the hydrogen dryer.
2. The hydrogen purity sampling and recovering device for thermal power plants according to claim 1, wherein the high pressure area of the generator is further connected to a hydrogen drier through a third pipeline, and the hydrogen drier is connected to the low pressure area of the generator through a fourth pipeline.
3. The hydrogen purity sampling and recovering device for the thermal power plant according to claim 2, wherein the fourth pipeline is communicated with the second pipeline.
4. The sampling recovery device of hydrogen purity for thermal power plant according to claim 1, 2 or 3, characterized in that the second pipeline is connected to the outlet side of the internal fan of the hydrogen drier.
5. The hydrogen purity sampling and recovering device for the thermal power plant according to claim 1, 2 or 3, wherein the output end of the hydrogen purity meter is further connected to the outside through a fifth pipeline.
6. The hydrogen purity sampling and recovering device for the thermal power plant according to claim 2, wherein valves are disposed on the first pipeline to the fourth pipeline.
7. The hydrogen purity sampling and recovering device for the thermal power plant according to claim 5, wherein a valve is arranged on the fifth pipeline.
8. The hydrogen purity sampling and recovering device for the thermal power plant according to claim 5, wherein the output end of the hydrogen purity meter is connected with a three-way valve, and the output ends of the three-way valve are respectively connected with the second pipeline and the fifth pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023115108.5U CN213813533U (en) | 2020-12-22 | 2020-12-22 | Hydrogen purity sampling and recovering device for thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023115108.5U CN213813533U (en) | 2020-12-22 | 2020-12-22 | Hydrogen purity sampling and recovering device for thermal power plant |
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| Publication Number | Publication Date |
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| CN213813533U true CN213813533U (en) | 2021-07-27 |
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| CN202023115108.5U Active CN213813533U (en) | 2020-12-22 | 2020-12-22 | Hydrogen purity sampling and recovering device for thermal power plant |
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| CN (1) | CN213813533U (en) |
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- 2020-12-22 CN CN202023115108.5U patent/CN213813533U/en active Active
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