CN111192697A - Leakage alarm detection system based on siphon principle - Google Patents
Leakage alarm detection system based on siphon principle Download PDFInfo
- Publication number
- CN111192697A CN111192697A CN201811355553.3A CN201811355553A CN111192697A CN 111192697 A CN111192697 A CN 111192697A CN 201811355553 A CN201811355553 A CN 201811355553A CN 111192697 A CN111192697 A CN 111192697A
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- CN
- China
- Prior art keywords
- siphon
- detection system
- siphon principle
- alarm detection
- system based
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
- G21C17/022—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/002—Detection of leaks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Examining Or Testing Airtightness (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
A leakage alarm detection system based on siphon principle belongs to mechanical engineering and mainly solves the problem that small leakage flow is difficult to measure and monitor. The method is mainly used for detecting small leakage flow, such as low-pressure leakage of mechanical seal of a shaft seal pump of a nuclear power station.
Description
Technical Field
The invention relates to a leakage measurement alarm method based on a siphon principle.
Background
At present, a shaft seal pump is mostly adopted by a pressurized water reactor, and a mechanical seal is used as an important rotary pump sealing part to play a decisive role in the normal operation of a reactor coolant pump. The low-pressure leakage rate is used as an important parameter for judging whether the reactor coolant shaft seal is normal or not, and an alarm is required to be given when the flow rate is exceeded. At present, the most common liquid mass flow measurement system based on thermosensitive properties has the defects of easy damage, inaccurate measurement, no symptoms in fault and the like.
Disclosure of Invention
If according to the shaft seal pump mechanical seal principle, the low pressure leakage of continuous certain within range is normal, need appear reporting to the police at equipment monitoring end when leaking the volume and surpassing certain limit, the suggestion operating personnel, combines other parameters to judge the running state of equipment according to leaking the volume. An alarm function should be implemented when the leakage exceeds the standard. The invention adopts the siphon principle, small leakage flow is leaked to the upper storage tank, the storage tank is provided with the siphon, when the liquid level exceeds the highest point of the siphon, fluid overflows to the lower storage tank, and the overflow is avoided until the liquid level of the upper storage tank is lower than the lowest position of the U-shaped tank in the storage tank. Install the level gauge in last holding vessel, level gauge switching signal sends the control room, can calculate the leakage quantity according to liquid level discharge frequency in last holding vessel and last holding vessel volume, sets up the definite value at the control room to leaking the leakage quantity and reports to the police. The gas chambers of the upper and lower storage tanks are communicated through small pipes to shield the influence of the system pressure on the detection system.
Has the advantages that: the leakage amount can be obtained, not only the alarm signal; if the current flow system fails, if the leakage cannot be measured and an alarm signal is sent, the invention also sends a signal under normal conditions, and can judge whether the measurement system fails and judge the source of the failure; the invention adopts the basic physical principle and is more reliable.
Description of the drawings: in the context of figure 1 of the drawings,
is used as an upper storage tank and is provided with a storage tank,
is used as a lower storage tank and is provided with a lower storage tank,
is a siphon-tube, and the siphon-tube is a siphon-tube,
is a liquid level switch and is characterized in that,
is a communicating pipe which is a pipe body,
in order to leak the water inlet pipe,
is a leakage drain pipe.
The specific implementation mode is as follows: small leakage through pipe
Enter the upper storage tank
The liquid level of the upper storage tank rises, and when the liquid level reaches the liquid level switch
Outputting an on signal; when the liquid level reaches the siphon
At the highest position B, the liquid overflows to the lower storage tank through the siphon B
(ii) a Storage tank based on siphon principle
When the liquid level is lowered to the liquid level switch
When the height of the siphon tube reaches the upper limit of the lower limit of the upper limit of the
The siphon action is stopped at the lowest level a; with low pressure leakage into the storage tank
The liquid level continues to rise. So obtain a set of switching signal repeatedly, can calculate through the volume that reaches B liquid level in the holding vessel and switching signal's frequency and obtain the leakage quantity, output alarm signal when the leakage quantity exceeds the definite value. Communicating pipe
The function of (a) is to shield the influence of system pressure on the siphoning action.
Claims (4)
1. A leakage alarm detection system based on siphon principle is characterized in that siphon principle is applied as a means for measuring flow; when the liquid in the upper storage tank reaches the height of the siphon tube, the overflow is caused, and according to the siphon action, the liquid stops until the liquid level reaches the lowest position of the siphon tube in the storage tank; the volume of liquid is determined when overflow siphoning occurs each time, and the leakage amount is calculated according to the occurrence frequency.
2. A leakage alarm detection system based on siphon principle features that when there is a problem in system, such as damage to measuring system, the output signal of liquid level switch is checked to see if there is a change, the system is normal, if there is no output signal, the measuring system is judged to be faulty.
3. A leakage alarm detection system based on siphon principle is characterized in that the siphon principle is utilized, the system is designed to be a closed mechanism aiming at radioactive special liquid, and the influence of the pressure of a communication pipe shielding system on the siphon action is increased: when the fluid which does not pollute the environment generally can be designed into an open tank body, a communicating pipe is not needed; closed and non-closed, both inclusive and exclusive, are within the scope of the claims.
4. A leakage alarm detection system based on a siphon principle is characterized in that a liquid level switch signal is used for reflecting the frequency of overflow siphon generation, and the leakage amount is calculated through data processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355553.3A CN111192697A (en) | 2018-11-15 | 2018-11-15 | Leakage alarm detection system based on siphon principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355553.3A CN111192697A (en) | 2018-11-15 | 2018-11-15 | Leakage alarm detection system based on siphon principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111192697A true CN111192697A (en) | 2020-05-22 |
Family
ID=70708984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811355553.3A Withdrawn CN111192697A (en) | 2018-11-15 | 2018-11-15 | Leakage alarm detection system based on siphon principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111192697A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112246A (en) * | 2021-11-19 | 2022-03-01 | 中国商用飞机有限责任公司 | Leakage detection device, leakage protection assembly and flight equipment |
| CN114109533A (en) * | 2021-10-27 | 2022-03-01 | 合肥通用机械研究院有限公司 | Efficient gas turbine rotor air cooler and leakage-proof control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0113078B2 (en) * | 1980-05-28 | 1989-03-03 | Tokyo Shibaura Electric Co | |
| CN202471174U (en) * | 2012-02-23 | 2012-10-03 | 招商局重工(深圳)有限公司 | Overflow alarm tank |
| CN206830427U (en) * | 2017-04-17 | 2018-01-02 | 哈尔滨电气动力装备有限公司 | The low discharge measurement apparatus of 1000MW reactor coolant pumps sealing leakage |
| CN206872495U (en) * | 2017-06-09 | 2018-01-12 | 北京环科宏力环境科技有限公司 | Small size automatic is unpowered Medical Wastewater Disposal System |
| CN107882145A (en) * | 2017-10-09 | 2018-04-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of roof rain water runoff measuring device and its application method |
-
2018
- 2018-11-15 CN CN201811355553.3A patent/CN111192697A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0113078B2 (en) * | 1980-05-28 | 1989-03-03 | Tokyo Shibaura Electric Co | |
| CN202471174U (en) * | 2012-02-23 | 2012-10-03 | 招商局重工(深圳)有限公司 | Overflow alarm tank |
| CN206830427U (en) * | 2017-04-17 | 2018-01-02 | 哈尔滨电气动力装备有限公司 | The low discharge measurement apparatus of 1000MW reactor coolant pumps sealing leakage |
| CN206872495U (en) * | 2017-06-09 | 2018-01-12 | 北京环科宏力环境科技有限公司 | Small size automatic is unpowered Medical Wastewater Disposal System |
| CN107882145A (en) * | 2017-10-09 | 2018-04-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of roof rain water runoff measuring device and its application method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109533A (en) * | 2021-10-27 | 2022-03-01 | 合肥通用机械研究院有限公司 | Efficient gas turbine rotor air cooler and leakage-proof control method |
| CN114109533B (en) * | 2021-10-27 | 2024-02-02 | 合肥通用机械研究院有限公司 | Efficient gas turbine rotor air cooler and leakage-proof control method |
| CN114112246A (en) * | 2021-11-19 | 2022-03-01 | 中国商用飞机有限责任公司 | Leakage detection device, leakage protection assembly and flight equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200522 |
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| WW01 | Invention patent application withdrawn after publication |