CN210464589U - Stator cooling water tank leaks hydrogen detection device - Google Patents
Stator cooling water tank leaks hydrogen detection device Download PDFInfo
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- CN210464589U CN210464589U CN201921924342.7U CN201921924342U CN210464589U CN 210464589 U CN210464589 U CN 210464589U CN 201921924342 U CN201921924342 U CN 201921924342U CN 210464589 U CN210464589 U CN 210464589U
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Abstract
The utility model relates to a hydrogen leakage detection method technical field especially relates to a stator cooling water tank leaks hydrogen detection device, contains and decides the cold water storage cistern, decide the vertical sampling tube that is fixed with one and decides the cold water storage cistern inside and links to each other in cold water storage cistern top, the sampling tube end is provided with the primary door of sample, the sampling tube top is connected with the alloy pipe, the alloy pipe is 45 jiaos with ground installation, the vertical metal blast pipe that is fixed with in alloy pipe top, metal blast pipe bottom is provided with gas flow purity analysis appearance, the inside hydrogen probe that leaks that is equipped with of gas flow purity analysis appearance, leak hydrogen probe and leak the general secondary of hydrogen analysis appearance and show signal connection. The device can effectively measure the hydrogen leakage amount at the top of the fixed cooling water tank.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a hydrogen leak testing method technical field especially relates to a stator cooling water tank leaks hydrogen detection device.
[ background of the invention ]
The steam turbine generator generally adopts a water-hydrogen cooling mode. Namely stator winding water internal cooling, rotor winding hydrogen internal cooling, iron core and other components hydrogen cooling. The hydrogen has the characteristics of small density, quick heat transfer and quick heat dissipation, and the heat dissipation capacity of the hydrogen is 8 times of that of air, so that the hydrogen is adopted as a heat exchange medium in a common generator. The hydrogen is also a dangerous article which is extremely easy to explode, and if the mass fraction of oxygen in the hydrogen is more than 3 percent, the hydrogen can explode immediately when meeting fire.
In the supercritical coal-fired power generating set, when a water system loop component inside a stator in a generator chamber has a problem, the phenomenon of internal leakage of a generator hydrogen system can occur, the accumulation of hydrogen in a generator pipeline is one of the problems of a steam turbine in a power plant, and when the leakage amount is large enough in the operation process, the hydrogen is not dissolved in time, and can directly flow back to a fixed cold water tank along with water flow, or can directly accumulate on certain pipelines of the generator to form air resistance, thereby seriously threatening the safe operation of the generator; in order to ensure the normal operation of the generator, the hydrogen leakage monitoring and early warning and the hydrogen discharge treatment of the fixed cold water tank are important problems to be solved in the normal operation of the generator at the present stage.
The utility model discloses it is not enough to solve prior art and research and propose.
[ Utility model ] content
The utility model aims at overcoming above-mentioned prior art's shortcoming, providing a stator cooling water tank leaks hydrogen detection device, the cold water tank is decided in accurate measurement accumulational every day and is leaked hydrogen volume and leak hydrogen concentration, prevents simultaneously that hydrogen and water from gathering leaking hydrogen probe and hydrogen discharging pipeline department.
The utility model discloses can realize through following technical scheme:
the utility model discloses a stator cooling water tank leaks hydrogen detection device contains decides the cold water storage cistern, decide the vertical sampling tube that is fixed with one and decides the inside continuous sampling tube of cold water storage cistern top, the sampling tube end is provided with the primary door of sample, the sampling tube top is connected with the alloy pipe, the alloy pipe is 45 jiaos of installation with ground, the vertical metal blast pipe that is fixed with in alloy pipe top, the metal blast pipe bottom is provided with gas flow purity analysis appearance, the inside hydrogen probe that leaks that is equipped with of gas flow purity analysis appearance, leak the hydrogen probe and leak the general secondary table signal connection of hydrogen analysis appearance. Opening a sampling once door, discharging hydrogen at the top of a fixed cold water tank through a sampling pipe, discharging the hydrogen through an alloy guide pipe which forms a 45-degree angle with the ground after being detected by a gas flow purity analyzer, and confirming data of the gas flow purity analyzer through a universal secondary meter of the hydrogen leakage analyzer, wherein the gas flow purity analyzer, also called as a stator cold water hydrogen leakage detection device, is used for monitoring the hydrogen leakage quantity at the top of the fixed cold water tank and determining the total hydrogen leakage quantity of the fixed cold water of a generator every day, so as to ensure that the defect elimination is arranged when the internal cooling water system is shut down when the hydrogen leakage quantity reaches 0.3 square meters/d and the immediate shutdown treatment is carried out when the square meters/d are more than 5 in the range specified in twenty-five key requirements for preventing electric power production accidents, and under the condition of normal operation, the hydrogen is dissolved to be saturated in stator cold water and gradually separates out in the fixed cold water tank along with the flow, and gather at deciding the cold water tank top, then discharge through stator cooling water tank leak hydrogen detection device, at the discharge process, gas flow purity analysis appearance monitoring leak hydrogen real-time concentration, because reasons such as hydrogen density are little, cause easily that leak hunting device pipeline gathers hydrogen phenomenon, at this moment, require to install the alloy pipe, whole adopt vertical installation sampling tube and metal blast pipe and 45 contained angle zigzag installation alloy pipe dual mode, thereby guarantee that the hydrogen process is unobstructed not to gather, keep stable flow simultaneously, guarantee the accuracy that gas flow purity analysis appearance measured.
Preferably, a rain cover is fixed at the top of the metal exhaust pipe. Prevent external rainwater to enter into in the metal blast pipe through rain-proof cover and influence hydrogen and discharge.
Preferably, the gas flow purity analyzer is in signal connection with a general secondary meter of the hydrogen leakage analyzer through four flame-retardant cables arranged inside the gas flow purity analyzer.
Preferably, the general secondary meter of the hydrogen leakage analyzer is further connected with a third-party display screen through signals. The real-time concentration of the leaked hydrogen is measured through the display of a third-party display screen, after the unit operates, the device continuously works, the change of the instantaneous value of the leaked hydrogen is monitored, daily accumulated flow statistics, real-time hourly mean values and other signals are input into the DCS and displayed.
Compared with the prior art, the utility model has the advantages that:
can accurate monitoring generating set, decide cold water storage cistern and leak hydrogen real-time data and daily accumulative total and leak the hydrogen volume, guarantee simultaneously that no accumulation in the sample pipeline, the quick evacuation of hydrogen is in time known generating set in service hydrogen system actual conditions, avoids influencing generator safety in production and operating efficiency and produces to improve generator normal work operation, extension generating set life.
[ description of the drawings ]
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of the present invention;
in the figure: 1. a fixed cold water tank; 2. a sampling tube; 3. a sampling primary gate; 4. an alloy conduit; 5. A gas flow purity analyzer; 6. a general secondary meter of a hydrogen leakage analyzer; 7. a metal exhaust pipe; 8. a rain cover;
[ detailed description ] embodiments
The following detailed description of embodiments of the present invention is made with reference to the accompanying drawings:
as shown in fig. 1, the utility model discloses a stator cooling water tank leaks hydrogen detection device, contain and decide cold water storage cistern 1, decide 1 top of cold water storage cistern vertical be fixed with one with decide 1 inside continuous sampling tube 2 of cold water storage cistern, 2 ends of sampling tube are provided with sample one time door 3, 2 tops of sampling tube are connected with alloy pipe 4, alloy pipe 4 is 45 jiaos with ground installation, the vertical metal blast pipe 7 that is fixed with in alloy pipe 4 top, 7 bottoms of metal blast pipe are provided with gas flow purity analysis appearance 5, 5 inside hydrogen leakage probes that are equipped with of gas flow purity analysis appearance, hydrogen leakage probe and the general secondary of hydrogen leakage analysis appearance table 6 signal connection. Opening a sampling primary door 3, discharging hydrogen at the top of a fixed cold water tank 1 through a sampling pipe 2, passing the hydrogen through an alloy guide pipe 4 which forms a 45-degree angle with the ground, detecting the hydrogen by a gas flow purity analyzer 5, then discharging the hydrogen through a metal exhaust pipe 7, confirming data of the gas flow purity analyzer 5 through a universal secondary meter 6 of the hydrogen leakage analyzer, wherein the gas flow purity analyzer 5, also called as a stator cold water hydrogen leakage detecting device, is used for monitoring and measuring hydrogen leakage quantity at the top of the cold water tank 1 and determining the total quantity of the fixed cold water hydrogen leakage of a generator every day, thereby ensuring that the hydrogen is dissolved in stator cold water to reach saturation within the range of planning shutdown when the hydrogen leakage quantity in an internal cooling water system reaches 0.3 square meters per meter and immediately shutdown treatment when the hydrogen leakage quantity is more than 5 square meters per meter under the regulation of twenty-five key requirements for preventing electric power production accidents, just along with deciding cold water flow and gradually appearing at cold water tank 1 surely, and the gathering is at 1 top of cold water tank surely, then discharge through stator cooling water tank hydrogen leakage detection device, at the discharge in-process, gas flow purity analysis appearance 5 monitors the real-time concentration of hydrogen leakage, because reasons such as hydrogen density is little, cause the interior hydrogen phenomenon of gathering of leak hunting device pipeline easily, at this time, require installation alloy pipe 4, whole journey adopts vertical installation sampling tube 2 and metal exhaust pipe 7 and 45 contained angle zigzag installation alloy pipe 4 dual mode, thereby guarantee that the hydrogen process of discharging is unobstructed not to gather, keep stable flow simultaneously, guarantee the accuracy of gas flow purity analysis appearance 5 measurement.
Wherein, rain-proof cover 8 is fixed with at metal blast pipe 7 top. Prevent external rainwater through rain-proof cover 8 and enter into influence hydrogen and discharge in the metal blast pipe 7.
Wherein, the gas flow purity analyzer 5 is connected with the secondary meter 6 which is general for the hydrogen leakage analyzer through four flame-retardant cables arranged inside.
Wherein, the general secondary meter 6 of the hydrogen leakage analyzer is also connected with a signal of a third party display screen (not shown). The real-time concentration of the leaked hydrogen is measured through the display of a third-party display screen, after the unit operates, the device continuously works, the change of the instantaneous value of the leaked hydrogen is monitored, daily accumulated flow statistics, real-time hourly mean values and other signals are input into the DCS and displayed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many changes, modifications, substitutions and variations can be made to the embodiments without departing from the technical principles of the present invention, and these changes, modifications, substitutions and variations should also be considered as the protection scope of the present invention.
Claims (4)
1. The utility model provides a stator cooling water tank leaks hydrogen detection device, contains and decides the cold water storage cistern, its characterized in that: the hydrogen leakage monitoring device is characterized in that a sampling tube connected with the inside of the fixed cold water tank is vertically fixed above the fixed cold water tank, a sampling primary door is arranged at the tail end of the sampling tube, an alloy guide tube is connected to the top of the sampling tube and is installed at an angle of 45 degrees with the ground, a metal exhaust tube is vertically fixed above the alloy guide tube, a gas flow purity analyzer is arranged at the bottom of the metal exhaust tube, a hydrogen leakage probe is arranged inside the gas flow purity analyzer, and the hydrogen leakage probe is connected with a secondary meter signal general for the hydrogen leakage analyzer.
2. The stator cooling water tank hydrogen leakage detection device according to claim 1, characterized in that: and a rain cover is fixed at the top of the metal exhaust pipe.
3. The stator cooling water tank hydrogen leakage detection device according to claim 1, characterized in that: the hydrogen leakage probe is connected with a signal of a general secondary meter of the hydrogen leakage analyzer through four flame-retardant cables arranged inside the hydrogen leakage probe.
4. The stator cooling water tank hydrogen leakage detection device according to claim 1, characterized in that: the general secondary meter of the hydrogen leakage analyzer is also connected with a third-party display screen through signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921924342.7U CN210464589U (en) | 2019-11-09 | 2019-11-09 | Stator cooling water tank leaks hydrogen detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921924342.7U CN210464589U (en) | 2019-11-09 | 2019-11-09 | Stator cooling water tank leaks hydrogen detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210464589U true CN210464589U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921924342.7U Active CN210464589U (en) | 2019-11-09 | 2019-11-09 | Stator cooling water tank leaks hydrogen detection device |
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| Country | Link |
|---|---|
| CN (1) | CN210464589U (en) |
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2019
- 2019-11-09 CN CN201921924342.7U patent/CN210464589U/en active Active
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| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: Maodian Town, Ganxian District, Ganzhou City, Jiangxi Province Patentee after: Huaneng Qinmei Ruijin Power Generation Co., Ltd Address before: Maodian Town, Ganxian County, Ganzhou City, Jiangxi Province Patentee before: HUANENG RUIJIN POWER GENERATION Co.,Ltd. |