CN213714655U - Hydrogen leakage monitoring device for fixed cold water tank and hydrogen safety monitoring system for fixed cold water tank - Google Patents
Hydrogen leakage monitoring device for fixed cold water tank and hydrogen safety monitoring system for fixed cold water tank Download PDFInfo
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- CN213714655U CN213714655U CN202022580669.6U CN202022580669U CN213714655U CN 213714655 U CN213714655 U CN 213714655U CN 202022580669 U CN202022580669 U CN 202022580669U CN 213714655 U CN213714655 U CN 213714655U
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- hydrogen leakage
- water tank
- hydrogen
- cold water
- steam
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 239000001257 hydrogen Substances 0.000 title claims abstract description 112
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 112
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 238000012806 monitoring device Methods 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 abstract description 32
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides a hydrogen leakage monitoring device of a fixed cold water tank and a hydrogen safety monitoring system of the fixed cold water tank, wherein the device comprises an open exhaust pipe, one end of which is connected with an exhaust port of the fixed cold water tank, and the other end of which is connected with the external space; the open type exhaust pipe is provided with a first branch pipe, and the first branch pipe is connected with the condenser through a first valve; the condenser is connected with the inlet end of the steam-water separator, and the outlet end of the condenser is connected with the open type exhaust pipe through a second branch pipe; the hydrogen leakage sensor is arranged between the outlet end of the steam-water separator and the second branch pipe and is connected with the hydrogen leakage detection host. The utility model can improve the circulation degree of the mixed gas and the measuring result of the hydrogen leakage sensor is accurate; the water vapor is removed through the condenser and the steam-water separator, so that the water vapor corrosion is effectively avoided, and the service life of the hydrogen leakage sensor is prolonged.
Description
Technical Field
The utility model relates to a decide cold water storage cistern hydrogen leakage monitoring technology field particularly, relates to a decide cold water storage cistern hydrogen leakage monitoring devices and decide cold water storage cistern hydrogen safety monitoring system.
Background
At present, most of turbonators adopt a water-hydrogen cooling mode, the water pressure of the fixed cooling water is smaller than the operating hydrogen pressure, and the hydrogen content of the fixed cooling box directly reflects partial fault conditions of a stator coil, so that the hydrogen-containing monitoring of the fixed cooling box is very important. A hydrogen leakage sensor is usually installed at an exhaust port in the top of a fixed cold water tank of the conventional hydrogen cooling generator, so that the hydrogen leakage rate can be monitored in real time.
Because the hydrogen leakage sensor is directly arranged at the exhaust port of the fixed cold water tank, the water tank is in a closed state, the gas circulation is not guaranteed, and the measurement result of the sensor is wrong; in addition, the fixed cold water tank runs for a long time to cause the temperature of the water tank to be higher than the ambient temperature, and the gas is discharged to carry water vapor, so that the hydrogen leakage sensor is easy to damage.
SUMMERY OF THE UTILITY MODEL
The utility model provides a current cold water storage cistern leaks hydrogen monitoring and has the measuring result error of sensor and the fragile problem.
In order to solve the above problem, the embodiment of the present invention is implemented as follows:
the embodiment of the utility model provides a decide cold water storage cistern and leak hydrogen monitoring devices, include: the system comprises an open type exhaust pipe, a first branch pipe, a first valve, a condenser, a steam-water separator, a second branch pipe, a hydrogen leakage sensor and a hydrogen leakage detection host; one end of the open type exhaust pipe is connected with an exhaust port of the fixed cold water tank, and the other end of the open type exhaust pipe is connected with the external space; the open type exhaust pipe is provided with a first branch pipe, and the first branch pipe is connected with the condenser through a first valve; the condenser is connected with the inlet end of the steam-water separator, and the outlet end of the steam-water separator is connected with the open type exhaust pipe through a second branch pipe; the hydrogen leakage sensor is arranged between the outlet end of the steam-water separator and the second branch pipe, and is connected with the hydrogen leakage detection host.
Optionally, the system further comprises an electronic flow meter, wherein the electronic flow meter is arranged at the outlet end of the steam-water separator.
Optionally, the air conditioner further comprises a fan connected in series in the second branch pipe.
Optionally, the fan is an unpowered fan.
Optionally, the condenser further comprises a U-shaped pipeline, and the U-shaped pipeline is communicated with the condenser and the steam-water separator.
Optionally, an adjustable pressure relief valve is further included; the adjustable pressure relief valve is connected in series in the open type exhaust pipe.
Optionally, the adjustable pressure relief valve is an adjustable one-way pressure relief valve.
Optionally, a three-way valve is also included; the inlet and the first outlet of the three-way valve are connected to the open type exhaust pipe, and the second outlet of the three-way valve is emptied.
Optionally, the electronic flow meter and the hydrogen leakage detection host are both connected with the monitoring host.
The embodiment of the utility model provides a decide cold water storage cistern hydrogen safety monitoring system, include: decide cold water tank, monitoring host computer and above-mentioned decide cold water tank monitoring devices that leaks hydrogen.
According to the hydrogen leakage monitoring device for the fixed cold water tank, the fixed cold water tank is connected with the external space through the open exhaust pipe so as to improve the circulation degree of the mixed gas, and the measurement result of the hydrogen leakage sensor is accurate; the water vapor in the mixed gas discharged from the fixed cold water tank is removed through the condenser and the steam-water separator, so that the water vapor corrosion is effectively avoided, and the service life of the hydrogen leakage sensor is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of hydrogen leakage monitoring of a conventional cooling water tank;
fig. 2 is a schematic structural diagram of a hydrogen leakage monitoring device for a stationary cold water tank according to an embodiment of the present invention.
Description of reference numerals:
11-a fixed cold water tank; 12-a ball valve; 13-a hydrogen leak sensor; 14-a host; 21-open exhaust pipe; 22-a first branch; 23-a first valve; 24-a condenser; 25-steam-water separator; 26-a second manifold; 28-hydrogen leakage detection host machine; 29-exhaust port; 30-adjustable pressure relief valves; 31-three-way valve.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A hydrogen leakage monitoring sensor is arranged at an exhaust port at the top of a fixed cooling water tank of the conventional hydrogen-cooled generator, so that the hydrogen leakage rate of hydrogen leakage is monitored in real time. Referring to fig. 1, a schematic structural diagram of hydrogen leakage monitoring of a conventional constant-cold water tank includes a constant-cold water tank 11, a ball valve 12, a hydrogen leakage sensor 13, and a host 14.
Wherein, leak hydrogen sensor 13 direct mount and decide the cold water tank gas vent, and the water tank is airtight state, leads to the gas circulation not to guarantee, even open the ball valve 12 of water tank gas vent, the inside gas of water tank is less than external atmospheric pressure, and gas also is difficult to discharge, causes the gas accumulation, and the measured value error of leaking hydrogen sensor is great. In addition, the fixed cold water tank runs for a long time, the temperature of the water tank is higher than the ambient temperature, and the gas is condensed into small water drops when being discharged, so that the electrochemical sensor is corroded by water due to the electrochemical sensor, the measured data is inaccurate, and for the thermal conductivity sensor, the temperature cannot be stable under the corrosion of water, and the data measurement is inaccurate. Under the condition that the water vapor erosion is serious, the two sensors can also cause the short circuit of the circuit board in the sensor, thereby causing the secondary safety problem. The range of the existing sensor is 0-4%, and the existing sensor does not meet the regulation of the twenty-five key requirements for preventing power production accidents, No. 161, New national energy safety (2014). The problems of the prior art described above can be summarized as follows:
a, no gas flows through a sampling port, and real-time exhaust volume cannot be accurately monitored;
b, dead gas is accumulated in the sampling tube, and a hydrogen leakage sensor performs wrong measurement and poisons the sensor;
the range c is 0 to 4 percent, and does not meet the new regulation of No. 161 'twenty-five key requirements for preventing electric power production accidents' of new national energy safety (2014);
d, the water vapor easily erodes the sensor, so that safety accidents of sensor damage and circuit board short circuit are caused;
and e, the hydrogen leakage content on the day of storage cannot be recorded in real time.
This embodiment provides a decide cold water storage cistern hydrogen leakage monitoring devices, refers to the cold water storage cistern hydrogen leakage monitoring devices' that figure 2 shows that this decides cold water storage cistern hydrogen leakage monitoring devices includes: open exhaust pipe 21, first branch pipe 22, first valve 23, condenser 24, steam-water separator 25, second branch pipe 26, hydrogen leakage sensor 13 and hydrogen leakage detection host 28.
One end of the open type exhaust pipe 21 is connected to an exhaust port 29 of the stationary cold water tank 11, and the other end is connected to the external space. Through open blast pipe, decide the cold water tank and can communicate with external space to realized mist and atmosphere intercommunication, be favorable to the mist circulation, ensured the accuracy of leaking hydrogen sensor.
The first branch pipe, the second branch pipe, the condenser and the steam-water separator arranged between the first branch pipe and the second branch pipe form a complete loop, and the mixed gas in the open type exhaust pipe enters the complete loop for circulation and then enters the open type exhaust pipe, and is discharged to the external open space through the open type exhaust pipe.
The hydrogen leakage sensor 13 is arranged between the outlet end of the steam-water separator 25 and the second branch pipe 26, and the hydrogen leakage sensor 13 is connected with the hydrogen leakage detection host 28. The hydrogen leakage sensor can monitor the hydrogen leakage condition in real time and further determine the hydrogen leakage rate in real time and the same day.
According to the hydrogen leakage monitoring device for the fixed cold water tank, the fixed cold water tank is connected with the external space through the open exhaust pipe so as to improve the circulation degree of the mixed gas, and the measurement result of the hydrogen leakage sensor is accurate; the water vapor in the mixed gas discharged from the fixed cold water tank is removed through the condenser and the steam-water separator, so that the water vapor corrosion is effectively avoided, and the service life of the hydrogen leakage sensor is prolonged.
The hydrogen leakage monitoring device for the cooling water tank further comprises an electronic flowmeter, and the electronic flowmeter is arranged at the outlet end of the steam-water separator. The gas flow can be recorded in real time through the electronic flowmeter, and the total exhaust content in real time and the same day is calculated, so that the exhaust volume monitoring is realized.
The electronic flowmeter can calculate the real-time and daily exhaust total content, the hydrogen leakage sensor can calculate the real-time and daily hydrogen leakage rate, and the host computer calculates the daily hydrogen leakage total amount, so that the aim of effectively detecting the real hydrogen leakage rate and the real hydrogen leakage amount in real time is fulfilled.
The hydrogen leakage monitoring device for the cooling water tank further comprises a fan which is connected in series with the second branch pipe and promotes gas to circulate in the complete loop. For example, the fan is an unpowered fan.
As shown in fig. 2, the hydrogen leakage monitoring device for the cooling water tank further includes an adjustable pressure relief valve 30 connected in series to the open type exhaust pipe 21. For example, the adjustable pressure relief valve is an adjustable one-way pressure relief valve. And under the condition that the hydrogen leakage is abnormally increased, when the pressure of the mixed gas reaches the action value of the adjustable pressure relief valve, the adjustable pressure relief valve is opened in time, and direct discharge and alarm are realized.
As shown in fig. 2, the hydrogen leakage monitoring device for the chilled water tank further includes a three-way valve 31, an inlet and a first outlet of which are connected to the open type exhaust pipe 21, and a second outlet of which is evacuated. Under the condition of maintenance, when the fixed cold water tank is replaced after being maintained or the hydrogen leakage monitoring device is maintained, the three-way valve is manually adjusted to an emptying position, and the mixed gas is discharged to the external space through the three-way valve.
Optionally, the hydrogen leakage monitoring device for the cooling water tank further comprises a U-shaped pipeline, and the U-shaped pipeline is communicated with the condenser and the steam-water separator. Optionally, the electronic flow meter and the hydrogen leakage detection host are both connected with the monitoring host.
Under the condition of normal hydrogen leakage, the adjustable pressure relief valve is in a closed state, and other valves are opened. The mixed gas of the fixed cold water tank flows through a three-way valve and a first valve (such as a ball valve) to enter a condenser, is dehydrated and then enters an electronic flowmeter, and then enters a hydrogen leakage sensor for test and analysis after passing through a U-shaped pipe and a steam-water separator, and finally flows through an open exhaust pipe from a second valve (such as a ball valve) to the outside through an unpowered fan, so that the circulation monitoring function is realized.
In the embodiment, the air discharge pipeline of the fixed cold water tank is used as a sampling port and is connected with a stainless steel three-way valve, the mixed gas discharged from the fixed cold water tank passes through a condenser to filter water vapor, then the water vapor is removed through a water vapor separator, and the mixed gas is introduced into the gas flowmeter and the hydrogen leakage sensor.
The electronic flowmeter can calculate the total exhaust content in real time and the current day, the hydrogen leakage sensor can calculate the hydrogen leakage rate in real time and the current day, and the host computer calculates the total hydrogen leakage amount in the current day. And respectively uploading the 485 signal and the 4-20mA signal to a background host. The background host compares the real-time monitored data with the industrial standard and the national standard, and if the monitored data exceeds the standard, the background gives out audible and visual alarm and voice prompt so as to make corresponding defect elimination measures in time. Meanwhile, qualified data and standard exceeding data are recorded in real time and uploaded to the background, and the background inquires corresponding data records at any time. The scheme can avoid corroding the sensor and prolong the service life of the sensor, can effectively read the hydrogen leakage rate and the hydrogen leakage amount, achieves the purpose of accurately monitoring the relative and absolute data of the hydrogen leakage of the fixed cold water tank in real time, can be used for comprehensive judgment of dual standards, and realizes the prior prevention and the satisfaction of new twenty-five counter measures.
The cold water storage cistern leakage hydrogen monitoring devices that this embodiment provided has following advantage:
a, the intercommunication of mixed gas and atmosphere is realized, and the real-time exhaust amount can be monitored;
the water vapor corrosion is effectively avoided, and the service life of the hydrogen leakage sensor is prolonged;
the real hydrogen leakage rate and the real hydrogen leakage amount are effectively detected in real time;
d, monitoring the exhaust amount and the hydrogen leakage amount of the mixed gas in real time, detecting from two aspects of the relative amount and the absolute amount of the hydrogen leakage, and providing a powerful basis for decision making;
e meets the requirements of 10.5.2 new regulations in No. 161 of national energy safety (2014);
f, the exhaust gas volume and the hydrogen leakage volume of the day can be effectively recorded and stored in an accumulated mode, and background calculation is facilitated.
This embodiment still provides a decide cold water storage cistern hydrogen safety monitoring system, includes: decide cold water tank, monitoring host computer and above-mentioned decide cold water tank monitoring devices that leaks hydrogen.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a decide cold water storage cistern hydrogen leakage monitoring devices which characterized in that includes: the system comprises an open type exhaust pipe, a first branch pipe, a first valve, a condenser, a steam-water separator, a second branch pipe, a hydrogen leakage sensor and a hydrogen leakage detection host;
one end of the open type exhaust pipe is connected with an exhaust port of the fixed cold water tank, and the other end of the open type exhaust pipe is connected with the external space;
the open type exhaust pipe is provided with a first branch pipe, and the first branch pipe is connected with the condenser through a first valve;
the condenser is connected with the inlet end of the steam-water separator, and the outlet end of the steam-water separator is connected with the open type exhaust pipe through a second branch pipe;
the hydrogen leakage sensor is arranged between the outlet end of the steam-water separator and the second branch pipe, and is connected with the hydrogen leakage detection host.
2. The hydrogen leakage monitoring device for the chilled water tank of claim 1, further comprising an electronic flow meter, wherein the electronic flow meter is arranged at the outlet end of the steam-water separator.
3. The chilled water tank hydrogen leakage monitoring device of claim 1, further comprising a fan connected in series in the second branch pipe.
4. The chilled water tank hydrogen leakage monitoring device of claim 3, wherein the fan is an unpowered fan.
5. The hydrogen leakage monitoring device for the fixed cold water tank as claimed in claim 1, further comprising a U-shaped pipeline, wherein the U-shaped pipeline is communicated with the condenser and the steam-water separator.
6. The chilled water tank hydrogen leakage monitoring device of claim 1, further comprising an adjustable pressure relief valve; the adjustable pressure relief valve is connected in series in the open type exhaust pipe.
7. The chilled water tank hydrogen leakage monitoring device of claim 6, wherein the adjustable pressure relief valve is an adjustable one-way pressure relief valve.
8. The chilled water tank hydrogen leakage monitoring device of claim 1, further comprising a three-way valve; the inlet and the first outlet of the three-way valve are connected to the open type exhaust pipe, and the second outlet of the three-way valve is emptied.
9. The chilled water tank hydrogen leakage monitoring device of claim 2, wherein the electronic flow meter and the hydrogen leakage detection host are connected with the monitoring host.
10. The utility model provides a decide cold water storage cistern hydrogen safety monitoring system which characterized in that includes: a cooling water tank, a monitoring host and a hydrogen leakage monitoring device of the cooling water tank as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022580669.6U CN213714655U (en) | 2020-11-10 | 2020-11-10 | Hydrogen leakage monitoring device for fixed cold water tank and hydrogen safety monitoring system for fixed cold water tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022580669.6U CN213714655U (en) | 2020-11-10 | 2020-11-10 | Hydrogen leakage monitoring device for fixed cold water tank and hydrogen safety monitoring system for fixed cold water tank |
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| CN213714655U true CN213714655U (en) | 2021-07-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330699A (en) * | 2023-09-12 | 2024-01-02 | 北京市农林科学院 | Unpowered compost ammonia monitoring device and use method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117330699A (en) * | 2023-09-12 | 2024-01-02 | 北京市农林科学院 | Unpowered compost ammonia monitoring device and use method |
| CN117330699B (en) * | 2023-09-12 | 2024-04-09 | 北京市农林科学院 | Unpowered compost ammonia monitoring device and use method |
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Granted publication date: 20210716 |