CN105865556B - The detection method of sulfur hexafluoride gas leakage rate in a kind of GIS device - Google Patents
The detection method of sulfur hexafluoride gas leakage rate in a kind of GIS device Download PDFInfo
- Publication number
- CN105865556B CN105865556B CN201610133151.3A CN201610133151A CN105865556B CN 105865556 B CN105865556 B CN 105865556B CN 201610133151 A CN201610133151 A CN 201610133151A CN 105865556 B CN105865556 B CN 105865556B
- Authority
- CN
- China
- Prior art keywords
- gas
- sulfur hexafluoride
- leakage
- hexafluoride gas
- gis
- Prior art date
- 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.)
- Active
Links
- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 71
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 71
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 2
- 230000007423 decrease Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 91
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000005431 greenhouse gas Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001266 bandaging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
一种GIS设备内六氟化硫气体泄漏量的检测方法，所述方法是将气体流速测量仪安装在位于靠近法兰或有密封接头处，并可以将泄漏流速传输回工控机进行远程监控；通过测量GIS管道内的六氟化硫气体流速，再通过工控机专用软件根据设备内径、环境温度、泄漏时间换算成六氟化硫气体泄漏量。所述方法实现的装置包括充六氟化硫气体的GIS设备（1）、气体流速测量仪（2）、环境温度计（3）、六氟化硫气体压力表（4）、数据处理器（5）和工控机（6）。本发明检测方法可避免气体泄漏造成设备的停运，保证设备的安全可靠运行，同时也有利于进行环保监督，控制温室气体的排放。
A method for detecting the leakage of sulfur hexafluoride gas in GIS equipment, the method is to install a gas flow rate measuring instrument near a flange or a sealed joint, and can transmit the leakage flow rate back to an industrial computer for remote monitoring; By measuring the flow rate of sulfur hexafluoride gas in the GIS pipeline, and then converting it into the leakage amount of sulfur hexafluoride gas according to the inner diameter of the equipment, the ambient temperature and the leakage time through the special software of the industrial computer. The device implemented by the method comprises a GIS device (1) filled with sulfur hexafluoride gas, a gas flow rate measuring instrument (2), an ambient thermometer (3), a sulfur hexafluoride gas pressure gauge (4), a data processor (5) ) and IPC (6). The detection method of the invention can avoid equipment outage caused by gas leakage, ensure the safe and reliable operation of the equipment, and is also conducive to environmental protection supervision and control of greenhouse gas emissions.
Description
Technical field
The present invention relates to a kind of detection methods of sulfur hexafluoride gas leakage rate in GIS device, belong to substation's on-line checking
Technical field.
Background technique
Increasing with Cubicle Gas-Insulated Switchgear (GIS), the dosage of sulfur hexafluoride gas is also more next
It is bigger.The leakage of sulfur hexafluoride gas is as one of the common deficiency during gas insulated high voltage electric equipment operation, not only
The dielectric strength that will affect equipment causes unplanned power failure, and biggish greenhouse effects, greenhouse effect will be also generated to atmospheric environment
It should be 20000 times of carbon dioxide.Therefore, the work of sulfur hexafluoride gas leak detection is extremely important.
Power industry is directed in GIS substation there are the power equipment of sulfur hexafluoride gas leakage, and early stage mainly uses soap
The detection methods such as water leakage detection, bandaging strapping, hand-held leak detector, in recent years using the development of sulfur hexafluoride gas infrared characteristic it is infrared at
For picture leak detecting in equipment live, relatively far away from distance can find the concrete position of leakage, and precision is high, and testing result is non-
Chang Zhiguan, but current detection method is all difficult to carry out accurate quantitative analysis to the sulfur hexafluoride gas of GIS device internal leakage, especially
There are no detection methods for total leakage rate since the equipment installation and operation.
Summary of the invention
The object of the present invention is to for the real time leak for monitoring GIS device amount, put into operation since leakage total amount, for setting
Standby state of insulation and environmental protection supervision, the present invention disclose a kind of detection method of sulfur hexafluoride gas leakage rate in GIS device.
Realize the technical scheme is that, the detection method of sulfur hexafluoride gas leakage rate in a kind of GIS device, by gas
Body Flow speed measurer is mounted on close to flange or has at seal nipple, and leakage flow velocity can be transmitted back to industrial personal computer and carried out
Long-range monitoring；By the sulfur hexafluoride gas flow velocity in measurement GIS pipeline, then by industrial personal computer special-purpose software according in equipment
Diameter, environment temperature, leak time are converted into sulfur hexafluoride gas leakage rate.
The conversion method is as follows:
(1) flow rate calculation of GIS gas in pipelines in normal conditions, sulfur hexafluoride gas have compressibility, GIS pipe
The volume flow of gas changes with the variation of pressure and temperature in road；Under standard state or free state, the quality of gas
Flow are as follows: G=2826V ρ0d2；
Wherein, G is mass flow (kg/h)；V is the flow velocity (m/s) of gas in normal conditions；ρ0It is gas in standard
Density (kg/m under state3)；D is internal diameter of the pipeline (m)；
(2) flow rate calculation of the gas under virtual condition, under virtual condition, the pressure and temperature of GIS gas in pipelines
All change constantly, the pressure of gas is gradually reduced with the leakage of gas, manage in sulfur hexafluoride gas temperature also due to
Change with ambient enviroment different transfer of heat, so taking its statistical value under normal circumstances；With sulfur hexafluoride gas in the pipe of period
Average absolute pressure P and average ambient temperature t is calculated, reality total air leakage of sulfur hexafluoride gas leakage:
M=GT=2826 ρ0d2V1P×[273/(273+t)]×T
Wherein, G is mass flow (kg/h)；V1The flow velocity (m/s) measured under virtual condition for gas；D is in pipeline
Diameter (m)；P is sulfur hexafluoride gas average absolute pressure (Bar) in GIS gas chamber；ρ0For the density of gas in normal conditions
(kg/m3)；T is average ambient temperature (DEG C)；T is the gas leakage time (h) of statistics；Total air leakage (kg) in M- statistical time.
The method realizes sulfur hexafluoride gas by following apparatus, the inspection of sulfur hexafluoride gas leakage rate in GIS device
Surveying device includes the GIS device for filling sulfur hexafluoride gas, air flow measuring apparatus, environment temperature meter, sulfur hexafluoride gas pressure
Table, data processor, according to flow velocity carry out gas flow conversion industrial personal computer；The test side of air flow measuring apparatus is mounted on
Close to flange or having at seal nipple in GIS pipeline, the output of air flow measuring apparatus connects data processor；Environment temperature meter
Data processor is connected, sends ambient temperature information to data processor；Sulfur hexafluoride gas pressure gauge be mounted on GIS device with
In the pipeline of data processor connection；The output end of data processor connects industrial personal computer.
The GIS device is to make insulation and arc-extinguishing medium, air flow measuring apparatus installation site using sulfur hexafluoride gas
For close flange or have at seal nipple, and leakage flow velocity can be transmitted back to industrial personal computer and remotely be monitored.
Flow rate conversion method in the method can be used for calculating the real-time volume leakage rate of GIS device, since the operation
Sulfur hexafluoride gas volumetric leak amount, the total leakage rate of quality of generation realize fine-grained management, also meet environmental requirement.
The invention has the advantages that detection method of the present invention for sulfur hexafluoride gas leakage rate in GIS device, it can
To carry out real-time monitoring to the sulfur hexafluoride gas leakage rate in GIS, and the leakage total amount since putting equipment in service is calculated,
The system energy and alarm simultaneously prompt operations staff to handle, and avoid gas leakage from causing the stoppage in transit of equipment, guarantee equipment
Safe and reliable operation, while being also beneficial to carry out environmentally friendly supervision, control the discharge of greenhouse gases.
The present invention is suitable for being to insulate with the GIS electrical equipment of arc-extinguishing medium, it can be achieved that sulfur hexafluoride gas with sulfur hexafluoride
Body real time leak amount, the monitoring for leaking total amount.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram that the present invention realizes；
In figure, 1 is the GIS device for filling sulfur hexafluoride gas；2 be sulfur hexafluoride gas Flow speed measurer；3 be environment temperature
Meter；4 it is sulfur hexafluoride gas pressure gauge, 5 is Signal sampling and processing device；6 be industrial personal computer.
Specific embodiment
In a kind of GIS device of the present embodiment sulfur hexafluoride gas leakage rate detection method realize device as shown in Figure 1,
Device includes the GIS device 1 for filling sulfur hexafluoride gas, sulfur hexafluoride gas Flow speed measurer 2, environment temperature meter 3, sulfur hexafluoride
Gas gauge 4, Signal sampling and processing device 5 and industrial personal computer 6.
Sulfur hexafluoride gas Flow speed measurer 2 is being packed into the GIS device for filling sulfur hexafluoride gas at pipe flange
1, the data of measurement are passed to letter by sulfur hexafluoride gas Flow speed measurer 2, environment temperature meter 3 and sulfur hexafluoride gas pressure gauge 4
Number acquisition and processing unit 5, Signal sampling and processing device 5 output port connection industrial personal computer 6 be monitored, on industrial personal computer
The special-purpose software of installation will be absolute according to equipment internal diameter, sulfur hexafluoride gas density in normal conditions, environment temperature, gas chamber
The sulfur hexafluoride gas volumetric leak that pressure, leak time etc. calculate GIS device real time leak amount, occurred since the operation
Amount, mass leakage.
When the detection method of sulfur hexafluoride gas leakage rate in GIS device is used on site, if the sulfur hexafluoride gas in GIS
When body does not leak, then gas mobility status is not present in pipeline, then the flow speed value in pipe is zero；When there is gas leakage
When, the gas pressure of air leakage point can be considered as to atmospheric pressure, sulfur hexafluoride gas goes out the flow outside pipeline in GIS pipeline internal leakage
It can be calculated as follows:
1. about the flow rate calculation of GIS gas in pipelines in normal conditions
Sulfur hexafluoride gas have compressibility, the volume flow of GIS gas in pipelines with the variation of pressure and temperature and
Variation.Under standard state or free state (absolute pressure of 0 DEG C of .0.1MPa), the volume flow of gas:
Q=V × 3.14 × (d/2)2× 3600 ... ... (1),
Q=2826Vd can be obtained by (1)2... ... ... (2),
(2) formula is substituted into mass flow formula: G=Q × ρ0
Obtain G=2826V ρ0d2………………(3)
2. about flow rate calculation of the gas under virtual condition
Under virtual condition, the pressure and temperature of GIS gas in pipelines all changes constantly, and the pressure of gas is with gas
The leakage of body and be gradually reduced, manage in sulfur hexafluoride gas temperature also due to ambient enviroment different transfer of heat and change, so
Sulfur hexafluoride gas average absolute pressure P and average ambient temperature t is calculated in pipe during taking it to count under normal circumstances.
The amendment that formula (3) are carried out to pressure and temperature can further obtain the actual mass of sulfur hexafluoride gas leakage
Flow:
G=2826 ρ0d2V1P[273/(273+t)]…………………(4)
When needing to count the sulfur hexafluoride gas leakage total amount in certain time interval T,
M=GT=2826 ρ0d2V1P×[273/(273+t)]×T………………(5)
In above-mentioned formula, Q is the volume flow (m of gas in normal conditions3/h)；G is mass flow (kg/h)；V is
The flow velocity (m/s) of gas in normal conditions；V1The flow velocity (m/s) measured under virtual condition for gas；D is internal diameter of the pipeline
(m)；P is sulfur hexafluoride gas average absolute pressure (Bar) in GIS gas chamber；ρ0For the density (kg/ of gas in normal conditions
m3)；T is average ambient temperature (DEG C)；T is the gas leakage time (h) of statistics；M is total air leakage (kg) in statistical time.
It can be by the sulfur hexafluoride real time leak amount in GIS device, total leakage in statistical time according to formula (4), (5)
Meter calculates, and can be reserved for numerical value.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610133151.3A CN105865556B (en) | 2016-03-10 | 2016-03-10 | The detection method of sulfur hexafluoride gas leakage rate in a kind of GIS device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610133151.3A CN105865556B (en) | 2016-03-10 | 2016-03-10 | The detection method of sulfur hexafluoride gas leakage rate in a kind of GIS device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105865556A CN105865556A (en) | 2016-08-17 |
| CN105865556B true CN105865556B (en) | 2019-05-21 |
Family
ID=56624632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610133151.3A Active CN105865556B (en) | 2016-03-10 | 2016-03-10 | The detection method of sulfur hexafluoride gas leakage rate in a kind of GIS device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105865556B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7037466B2 (en) * | 2018-10-09 | 2022-03-16 | 株式会社コスモ計器 | Control device, flow sensitivity correction method, program |
| CN109253900A (en) * | 2018-10-31 | 2019-01-22 | 国网重庆市电力公司电力科学研究院 | A kind of sulfur hexafluoride sampling method |
| CN112903211A (en) * | 2021-03-29 | 2021-06-04 | 广州燃气集团有限公司 | Equipment and method for detecting tightness of gas pipeline |
| CN113125300A (en) * | 2021-04-12 | 2021-07-16 | 国网河北省电力有限公司衡水供电分公司 | Sulfur hexafluoride density quality transmission device and system with wireless transmission and transmitter |
| CN114323459B (en) * | 2021-11-22 | 2024-04-26 | 华能海南发电股份有限公司海口电厂 | Front end detection unit device |
| CN115436221B (en) * | 2022-07-29 | 2024-10-11 | 上海思源高压开关有限公司 | GIS cylinder gas density detection method and detection mechanism under low-temperature working condition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943691A (en) * | 2010-04-14 | 2011-01-12 | 广西电网公司电力科学研究院 | Device and method for checking SF6 gas leakage monitoring and alarming apparatuses |
| CN101960303A (en) * | 2008-11-11 | 2011-01-26 | 韩国电力系统开发设计有限公司 | Apparatus for measuring fluid leakage from a valve using ultrasonic wave, sound, and temperature variations, and method for measuring fluid leakage using same |
| CN102419330A (en) * | 2011-12-07 | 2012-04-18 | 重庆市电力公司电力科学研究院 | Gas content detection device for hydrogen fluoride HF, and method for the same |
| CN104913825A (en) * | 2015-06-30 | 2015-09-16 | 国家电网公司 | Breaker and quality monitoring device for gas leakage |
-
2016
- 2016-03-10 CN CN201610133151.3A patent/CN105865556B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101960303A (en) * | 2008-11-11 | 2011-01-26 | 韩国电力系统开发设计有限公司 | Apparatus for measuring fluid leakage from a valve using ultrasonic wave, sound, and temperature variations, and method for measuring fluid leakage using same |
| CN101943691A (en) * | 2010-04-14 | 2011-01-12 | 广西电网公司电力科学研究院 | Device and method for checking SF6 gas leakage monitoring and alarming apparatuses |
| CN102419330A (en) * | 2011-12-07 | 2012-04-18 | 重庆市电力公司电力科学研究院 | Gas content detection device for hydrogen fluoride HF, and method for the same |
| CN104913825A (en) * | 2015-06-30 | 2015-09-16 | 国家电网公司 | Breaker and quality monitoring device for gas leakage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105865556A (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105865556B (en) | The detection method of sulfur hexafluoride gas leakage rate in a kind of GIS device | |
| CN104568323B (en) | A kind of SF6Gas leaks online monitoring alarm system | |
| CN104460480B (en) | The micro- water on-line monitoring system of sulfur hexafluoride gas density | |
| CN206192402U (en) | Gaseous little water of SF6, density on -line monitoring system | |
| CN105932590B (en) | A kind of SF based on pressure and temperature6Gas presence appraisal procedure | |
| CN104535456A (en) | Novel sulfur hexafluoride gas density micro-water transmitter | |
| CN203745010U (en) | Integrated temperature and pressure vortex flow meter | |
| CN206055200U (en) | A kind of monitoring system of cryogenic liquid storage tank | |
| CN202974976U (en) | System for detecting accuracy of SF6 on-line monitoring device | |
| CN104122007A (en) | Fiber bragg grating temperature sensor based GIS (Geographic Information System) equipment contact terminal temperature monitoring system | |
| CN112576942A (en) | Real-time monitoring system for hydrogen leakage | |
| CN202008455U (en) | Circular flow measurement type on-line monitoring transmitter for SF6 micro-water and density | |
| CN207020113U (en) | For detecting the online accurate dew point sampling system of hydrogen humidity | |
| CN102207406A (en) | Anti-interference infrared temperature measurement method and apparatus thereof | |
| CN105737944A (en) | Device and method for detecting oil level of oil storage cabinet of corrugated pipe tube transformer | |
| CN108871490A (en) | Sulfur hexafluoride gas Calculational Methods on Leakage and monitoring device in a kind of substation | |
| CN201117559Y (en) | SF6 gas density relay | |
| CN117269697A (en) | Ultrasonic detection system and method for partial discharge of superconducting cable installed in Dewar | |
| CN108152370B (en) | Device and method for rapid detection of composition ratio of SF6 and N2 mixed gas | |
| CN202946930U (en) | Self-powered submarine pipeline on-line leak test device | |
| CN204346980U (en) | A kind of detector for SF6 gas concentration on-line monitoring | |
| CN109949951A (en) | A double-shell type nuclear power plant shell concrete leakage rate measuring device | |
| CN106153265A (en) | A kind of hand held gas leak device for fast detecting | |
| CN102980037A (en) | Online leakage test device for self-powered submarine pipeline | |
| CN204165859U (en) | The micro-water transmitter of a kind of novel sulfur hexafluoride gas density |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |