CN213180533U - Hydrogen leakage amount monitoring device - Google Patents

Hydrogen leakage amount monitoring device Download PDF

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Publication number
CN213180533U
CN213180533U CN202021549512.0U CN202021549512U CN213180533U CN 213180533 U CN213180533 U CN 213180533U CN 202021549512 U CN202021549512 U CN 202021549512U CN 213180533 U CN213180533 U CN 213180533U
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China
Prior art keywords
monitoring
pipeline
stop valve
exhaust
pipe
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Active
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CN202021549512.0U
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Chinese (zh)
Inventor
李庆伟
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Foshan Hengyi Thermal Power Co ltd
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Foshan Hengyi Thermal Power Co ltd
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Priority to CN202021549512.0U priority Critical patent/CN213180533U/en
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Abstract

The utility model discloses a hydrogen leakage amount monitoring device mainly includes stator water tank, controller, detector, probe, exhaust duct, monitoring pipe way, first stop valve, second stop valve and air pump. When the device is used, the fan at the outlet of the exhaust pipeline can be opened, the second stop valve is closed, negative pressure is generated at the outlet, and gas to be detected in the stator water tank passes through the monitoring pipeline and then is captured and measured by the probe; when the negative pressure generated by the fan cannot meet the monitoring requirement, the exhaust pump can be opened, and the first stop valve and the second stop valve are closed for measurement; when the air in the stator water tank needs to be discharged, the fan can be opened, and the first stop valve and the third stop valve can be closed. The utility model discloses still have simple structure, convenient operation, easy advantage of implementing.

Description

Hydrogen leakage amount monitoring device
Technical Field
The utility model relates to a varnish monitoring technology field especially relates to a leak hydrogen volume monitoring devices.
Background
The hydrogen internal leakage is one of common faults of the hydrogen-cooled turbonator, and has the characteristics of difficulty in finding and observing, large potential safety hazard and the like. The hydrogen on-line monitoring is an important monitoring project for ensuring the safe operation of the hydrogen-cooled steam turbine generator, has the important functions of real-time monitoring and early failure alarm, can monitor the hydrogen concentration, the change trend and the alarm history of the key parts of the generator in real time, realizes the multi-point centralized monitoring of the hydrogen leakage of the generator, and improves the economical efficiency and the safety of the unit operation.
At present, a hydrogen leakage probe with the measuring range of 0-4% is adopted on a cold water tank in a generator to monitor the hydrogen leakage condition. Leakage of the internal cooling water system in the stator winding may cause severe winding short circuits, since leakage of the internal cooling water system is closely related to safe operation of the stator winding insulation. Because the hydrogen leakage amount of the cold water tank in the generator is inconsistent, the possibility of exceeding the monitoring range of the existing hydrogen leakage probe by 4 percent exists, and therefore, the potential safety hazard is caused by the false alarm or the normal high alarm state. The following problems exist in the hydrogen leakage amount monitoring process: the exhaust pipe of the fixed cold water tank is very long, the drift diameter is small, and the number of turns is large, so that the air resistance is large. The water level of the water tank rises to extrude exhaust and chimney effect exhaust of the exhaust pipe, so that the measurement precision is seriously influenced.
Accordingly, further improvements and improvements are needed in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of prior art, provide a leak hydrogen volume monitoring devices.
The purpose of the utility model is realized through the following technical scheme:
a hydrogen leakage amount monitoring device mainly comprises a stator water tank, a controller, a detector, a probe, an exhaust pipeline, a monitoring pipeline, a first stop valve, a second stop valve and an exhaust pump. One end of the exhaust pipeline is connected with an air outlet of the stator water tank, and the other end of the exhaust pipeline extends to the outside. And two ends of the monitoring pipeline are connected in parallel to the exhaust pipeline, and two ends of the monitoring pipeline are communicated with the exhaust pipeline. The probe is arranged on the monitoring pipeline and is connected with the detector. The first stop valve is installed on the monitoring pipeline and is positioned on one side of the probe and close to the outlet of the exhaust pipeline. The second stop valve is installed on the exhaust pipeline and is located between two parallel points of the monitoring pipeline. The input end of the exhaust pump is connected with the monitoring pipeline through a pipeline, the connection point of the exhaust pump is located between the probe and the first stop valve, and the output end of the exhaust pump is connected with the outside. The controller is electrically connected with the first stop valve and the second stop valve respectively.
Furthermore, the monitoring device also comprises a third stop valve, and the third stop valve is arranged on the monitoring pipeline and positioned on the other side of the probe.
Furthermore, monitoring devices still includes the fourth stop valve, the fourth stop valve is installed on exhaust duct, is located between the parallel connection point of stator water tank gas outlet and monitoring pipeline.
As the preferred scheme of the utility model, the exhaust pump adopts the peristaltic type or the pulsating type exhaust pump.
Further, the monitoring device further comprises a flow-through device for enhancing the chimney effect. The circulator is installed at an outlet of the exhaust pipeline and comprises a straight pipe, a transverse pipe, a first guide pipe, a second guide pipe and a fan. One end of the straight pipe is installed on the exhaust pipeline, and the other end of the straight pipe is connected with the middle of the transverse pipe. The transverse pipe is horizontally arranged at the other end of the straight pipe. The first guide pipe and the second guide pipe are respectively arranged at the left end and the right end of the transverse pipe and are communicated with the transverse pipe. The fan is arranged on the transverse pipe, is positioned on one side of the joint of the transverse pipe and the straight pipe, and blows air to the other side to enable the outlet of the exhaust pipeline to generate negative pressure.
As a preferable embodiment of the present invention, the first guide pipe and the second guide pipe are symmetrically arranged in a downward direction.
As a preferable aspect of the present invention, the first guide duct and the second guide duct are inclined downward at an angle ranging from 5 to 15 degrees.
The utility model discloses a working process and principle are: when the device is used, the fan at the outlet of the exhaust pipeline can be opened, the second stop valve is closed, negative pressure is generated at the outlet, and gas to be detected in the stator water tank passes through the monitoring pipeline and then is captured and measured by the probe; when the negative pressure generated by the fan cannot meet the monitoring requirement, the exhaust pump can be opened, and the first stop valve and the second stop valve are closed for measurement; when the air in the stator water tank needs to be discharged, the fan can be opened, and the first stop valve and the third stop valve can be closed. The utility model discloses still have simple structure, convenient operation, easy advantage of implementing.
Compared with the prior art, the utility model discloses still have following advantage:
(1) the utility model provides a leak hydrogen volume monitoring devices can divide into triplex such as air discharge pump, leak hydrogen measuring device, stop valve altogether, realizes that the air discharge pump takes out vapour automatically under DCS control system, through the design of bleeding 10 minutes per 4 hours, and initiative help water tank exhausts, makes to leak hydrogen measuring device more accurate.
(2) The utility model provides a leak hydrogen volume monitoring devices has solved the water tank and has exhausted not smoothly, and hydrogen accumulation causes the puzzlement that concentration often exceeds standard in the water tank.
Drawings
Fig. 1 is a schematic structural diagram of a hydrogen leakage amount monitoring device provided by the present invention.
Fig. 2 is a schematic structural diagram of the flow-through device provided by the present invention.
The reference numerals in the above figures illustrate:
1-stator water tank, 2-detector, 3-probe, 4-exhaust pipeline, 5-monitoring pipeline, 6-first stop valve, 7-second stop valve, 8-exhaust pump, 9-third stop valve, 10-fourth stop valve, 11-straight pipe, 12-horizontal pipe, 13-first conduit, 14-second conduit and 15-fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be further described with reference to the accompanying drawings and examples.
Example 1:
as shown in fig. 1 and fig. 2, the present embodiment discloses a hydrogen leakage amount monitoring device, which mainly includes a stator water tank 1, a controller, a detector 2, a probe 3, an exhaust pipe 4, a monitoring pipe 5, a first stop valve 6, a second stop valve 7, and an exhaust pump 8. One end of the exhaust pipeline 4 is connected with an air outlet of the stator water tank 1, and the other end of the exhaust pipeline extends to the outside. And two ends of the monitoring pipeline 5 are connected in parallel to the exhaust pipeline 4, and two ends of the monitoring pipeline are communicated with the exhaust pipeline 4. The probe 3 is mounted on the monitoring pipeline 5 and connected with the detector 2. The first stop valve 6 is mounted on the monitoring pipe 5, on the side of the probe 3 and close to the outlet of the exhaust pipe 4. The second stop valve 7 is installed on the exhaust pipeline 4 and is positioned between two parallel points of the monitoring pipeline 5. The input end of the exhaust pump 8 is connected with the monitoring pipeline 5 through a pipeline, the connection point of the exhaust pump is positioned between the probe 3 and the first stop valve 6, and the output end of the exhaust pump is connected with the outside. The controller is electrically connected to the first cut-off valve 6 and the second cut-off valve 7, respectively.
Further, the monitoring device also comprises a third stop valve 9, and the third stop valve 9 is installed on the monitoring pipeline 5 and is positioned on the other side of the probe 3.
Further, monitoring devices still includes fourth stop valve 10, fourth stop valve 10 installs on exhaust duct 4, is located between 1 gas outlet of stator water tank and the parallel connection of monitoring pipe 5.
As a preferred embodiment of the present invention, the exhaust pump 8 is a peristaltic or pulsating exhaust pump 8.
Further, the monitoring device further comprises a flow-through device for enhancing the chimney effect. The circulator is installed at the outlet of the exhaust duct 4 and includes a straight pipe 11, a cross pipe 12, a first duct 13, a second duct 14, and a fan 15. One end of the straight pipe 11 is arranged on the exhaust pipeline 4, and the other end is connected with the middle part of the transverse pipe 12. The horizontal pipe 12 is horizontally arranged at the other end of the straight pipe 11. The first and second guide pipes 13 and 14 are respectively provided at left and right ends of the cross pipe 12 and communicate with the cross pipe 12. The fan 15 is installed on the horizontal pipe 12, is positioned at one side of the joint of the horizontal pipe 12 and the straight pipe 11, and blows air to the other side to generate negative pressure at the outlet of the exhaust duct 4.
As a preferable embodiment of the present invention, the first guide pipe 13 and the second guide pipe 14 are symmetrically and downwardly inclined.
As a preferable aspect of the present invention, the first guide duct 13 and the second guide duct 14 are inclined downward in an angle ranging from 5 to 15 degrees.
The utility model discloses a working process and principle are: when the device is used, the fan 15 at the outlet of the exhaust pipeline 4 can be opened, the second stop valve 7 is closed, negative pressure is generated at the outlet, and gas to be detected in the stator water tank 1 passes through the monitoring pipeline 5 and then is captured and measured by the probe 3; when the negative pressure generated by the fan 15 cannot meet the monitoring requirement, the exhaust pump 8 can be opened, and the first stop valve 6 and the second stop valve 7 can be closed for measurement; when the air in the stator water tank 1 needs to be discharged, the fan 15 can be opened, and the first stop valve 6 and the third stop valve 9 can be closed. The utility model discloses still have simple structure, convenient operation, easy advantage of implementing.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims (7)

1. A hydrogen leakage amount monitoring device is characterized by comprising a stator water tank, a controller, a detector, a probe, an exhaust pipeline, a monitoring pipeline, a first stop valve, a second stop valve and an exhaust pump; one end of the exhaust pipeline is connected with an air outlet of the stator water tank, and the other end of the exhaust pipeline extends to the outside; two ends of the monitoring pipeline are connected in parallel to the exhaust pipeline, and two ends of the monitoring pipeline are communicated with the exhaust pipeline; the probe is arranged on the monitoring pipeline and is connected with the detector; the first stop valve is arranged on the monitoring pipeline, is positioned at one side of the probe and is close to the outlet of the exhaust pipeline; the second stop valve is arranged on the exhaust pipeline and is positioned between two parallel points of the monitoring pipeline; the input end of the exhaust pump is connected with the monitoring pipeline through a pipeline, the connection point of the exhaust pump is positioned between the probe and the first stop valve, and the output end of the exhaust pump is connected with the outside; the controller is electrically connected with the first stop valve and the second stop valve respectively.
2. The hydrogen leakage amount monitoring device according to claim 1, further comprising a third shut-off valve mounted on the monitoring pipe on the other side of the probe.
3. The hydrogen leakage amount monitoring device according to claim 1, further comprising a fourth stop valve installed on the exhaust pipe between a parallel point of the stator water tank air outlet and the monitoring pipe.
4. The hydrogen leakage amount monitoring device according to claim 1, wherein the purge pump employs a peristaltic or pulsating purge pump.
5. The hydrogen leakage amount monitoring device according to claim 1, further comprising a flow-through for enhancing a chimney effect; the circulator is arranged at an outlet of the exhaust pipeline and comprises a straight pipe, a transverse pipe, a first guide pipe, a second guide pipe and a fan; one end of the straight pipe is arranged on the exhaust pipeline, and the other end of the straight pipe is connected with the middle part of the transverse pipe; the transverse pipe is horizontally arranged at the other end of the straight pipe; the first guide pipe and the second guide pipe are respectively arranged at the left end and the right end of the transverse pipe and are communicated with the transverse pipe; the fan is arranged on the transverse pipe, is positioned on one side of the joint of the transverse pipe and the straight pipe, and blows air to the other side to enable the outlet of the exhaust pipeline to generate negative pressure.
6. The hydrogen leakage amount monitoring device according to claim 5, wherein the first conduit and the second conduit are disposed symmetrically and obliquely downward.
7. The hydrogen leakage amount monitoring device according to claim 5, wherein the first conduit and the second conduit are inclined downward at an angle ranging from 5 to 15 degrees.
CN202021549512.0U 2020-07-30 2020-07-30 Hydrogen leakage amount monitoring device Active CN213180533U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021549512.0U CN213180533U (en) 2020-07-30 2020-07-30 Hydrogen leakage amount monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021549512.0U CN213180533U (en) 2020-07-30 2020-07-30 Hydrogen leakage amount monitoring device

Publications (1)

Publication Number Publication Date
CN213180533U true CN213180533U (en) 2021-05-11

Family

ID=75796977

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021549512.0U Active CN213180533U (en) 2020-07-30 2020-07-30 Hydrogen leakage amount monitoring device

Country Status (1)

Country Link
CN (1) CN213180533U (en)

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