CN207280817U - Sulfur hexafluoride gas leaks live detection sampling apparatus - Google Patents
Sulfur hexafluoride gas leaks live detection sampling apparatus Download PDFInfo
- Publication number
- CN207280817U CN207280817U CN201721083163.6U CN201721083163U CN207280817U CN 207280817 U CN207280817 U CN 207280817U CN 201721083163 U CN201721083163 U CN 201721083163U CN 207280817 U CN207280817 U CN 207280817U
- Authority
- CN
- China
- Prior art keywords
- sampling
- sulfur hexafluoride
- capillary
- hexafluoride gas
- live detection
- 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
Abstract
The utility model discloses a kind of sulfur hexafluoride gas to leak live detection sampling apparatus, includes sampling probe, sample conveying tube, vacuum chamber, sampling probe is connected by sample conveying tube with vacuum chamber.The utility model provides a kind of sulfur hexafluoride gas leakage live detection sampling apparatus, the device can carry out the sulfur hexafluoride electrical equipment of charging operation the sampling of Leakage inspection, it utilizes the pressure differential between vacuum chamber and sampling probe, collection and transmission of the air sample under low flow condition are realized by sample conveying tube, it is effectively improved the transmission speed of air sample, reduce the time delay and recovery time of detection, the dilution to air sample is efficiently avoid, improves the precision of detection.
Description
Technical field
Sulfur hexafluoride gas leak detection technology field is the utility model is related to, more particularly to a kind of sulfur hexafluoride gas is let out
Leak live detection sampling apparatus.
Background technology
Sulfur hexafluoride gas is because of its excellent insulation and arc extinction performance, the sulfur hexafluoride being widely used in electric system
The sulfur hexafluoride electrical equipments such as switch, sulfur hexafluoride current mutual inductor, sulfur hexafluoride voltage transformer.In recent years, sulfur hexafluoride
Gas leakage has become the most common defect of sulfur hexafluoride electrical equipment, to avoid triggering equipment thing since sulfur hexafluoride leaks
Therefore the detection leaked sulfur hexafluoride gas is the important step of equipment investment operation and line service.
Sulfur hexafluoride gas leakage existing detection method according to the state of electrical equipment can be divided into power failure detection with it is powered
Detection.Power failure detection method has soap bubble leak detection, vacuum leak hunting and leak detector leak detection, vacuum leak hunting to be mainly used for GIS and set
After standby installation or disassembling overhaul, cooperation vacuumizes drying equipment progress.133pa is evacuated to SF6 equipment first, is then proceeded to
Vacuumize lasting 30 minutes, stop vacuum pump, vacuum A is read after watching quietly 30 minutes, then watch quietly 5 it is small when after read vacuum B, B-
A≤133pa, can tentatively assert favorable sealing property, this method can check the sealing state of equipment, but can not look into
Look for specific leakage point.Soap bubble leak detection is a kind of simple qualitative leak hunting method, can accurate discovery air leakage point.With in portion
Property soap add two parts of water and prepare suds, be coated in detected position, if blistering shows gas leakage at this, blistering it is more more more
It is anxious, illustrate that gas leakage is more serious, can intuitively reflect the accurate location and leakage rate of larger leak source；But the work of this method
Amount is very big, and time-consuming, efficiency is low, it is impossible to effectively searches leakage point.Leak detector is divided into qualitative leak detector and quantitative leak detector, its
The sensitivity of middle quantitative leak detector is higher, and test limit can reach 0.01ppm.Leak detection is generally higher using the sensitivity by check and correction
Sulfur hexafluoride leak detector device, moved close to and along tested surface with the speed of about 20-25mm/s, detecting instrument cannot detect
Sulfur hexafluoride releases, and is qualification；Or with reference to bandaging strapping, static 24h, is detected in wrapping position air with quantitative leak detector
Sulfur hexafluoride content is no more than 30ppm, is qualified, this method high sensitivity, available for lookup minute leakage point.It is existing fixed
Although measuring leak detector leak hunting method high sensitivity, it must be used under conditions of electrical equipment power failure, such as be used for live detection,
Certain method of sampling, which must be combined, can just implement.
Utility model content
The deficiency for more than, the utility model provide a kind of sulfur hexafluoride gas leakage live detection sampling apparatus, can
Realize the sampling of sulfur hexafluoride gas leakage live detection.
To reach above-mentioned purpose, the utility model adopts the following technical solution：
A kind of sulfur hexafluoride gas leaks live detection sampling apparatus, includes sampling probe, sample conveying tube, vacuum
Chamber, the sampling probe are connected by the sample conveying tube with the vacuum chamber.
Further, the sampling probe includes filter, sampling pipe and lever, and the filter and lever are located at institute respectively
State the both ends of sampling pipe.
Further, the sampling pipe includes sampling pipe capillary, sampling pipe channel rubber and sampling outer tube layer, described
Sampling pipe channel rubber and sampling outer tube layer are sequentially sleeved at the outside of the sampling pipe capillary.
Further, the sampling pipe capillary passes through the vitreous silica capillary of silanization treatment for surface, described to adopt
The internal diameter of sample pipe capillary is 150 ~ 300 μm；The material of the sampling pipe channel rubber is fluorubber；The sampling outer tube layer
Material is polytetrafluoroethylene (PTFE), and the sampling outer tube layer outside diameter is 3 ~ 6mm, and thickness is 0.4 ~ 0.6mm.
Further, the sample conveying tube includes transfer tube capillary, transfer tube channel rubber and transmission outer tube layer,
The transfer tube channel rubber and transmission outer tube layer are sequentially sleeved at the outside of the transfer tube capillary.
Further, the transfer tube capillary passes through the vitreous silica capillary of silanization treatment, the biography for surface
Defeated pipe capillary inner diameter is 150 ~ 300 μm；The material of the transfer tube channel rubber is fluorubber；The material of the transmission outer tube layer
Matter is polytetrafluoroethylene (PTFE), and the transmission outer tube layer outside diameter is 2 ~ 4mm, and thickness is 0.3 ~ 0.5mm.
Further, the material of the filter is polytetrafluoroethylene (PTFE), in umbrella.
Further, the material of the lever is polypropylene plastics, and the length of the lever is 10 ~ 20cm, outside diameter for 2 ~
4cm。
Compared with prior art, the beneficial effects of the utility model are：The utility model provides a kind of sulfur hexafluoride gas
Live detection sampling apparatus is leaked, which can carry out adopting for Leakage inspection to the sulfur hexafluoride electrical equipment of charging operation
Sample, it realizes air sample in low flow condition using the pressure differential between vacuum chamber and sampling probe by sample conveying tube
Under collection and transmission, be effectively improved the transmission speed of air sample, reduce the time delay and recovery time of detection,
The dilution to air sample is efficiently avoid, improves the precision of detection.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described.
Fig. 1 is the structure diagram of the utility model preferred embodiment；
Fig. 2 is the transverse sectional view of the sampling pipe of the utility model preferred embodiment；
Fig. 3 is the transverse sectional view of the sample conveying tube of the utility model preferred embodiment；
Fig. 4 is the vacuum chamber and sample conveying tube, diaphragm pump, molecular pump, vacuum meter of the utility model preferred embodiment
With the connection diagram of sulfur hexafluoride detection unit.
Wherein, it is labeled as shown in figure：10：Sampling probe；11：Filter；12：Sampling pipe；121：Sampling pipe capillary；
122：Sampling pipe channel rubber；123：Sample outer tube layer；13：Lever；20：Sample conveying tube；21：Transfer tube capillary；22：Pass
Defeated pipe channel rubber；23：Transmit outer tube layer；30：Vacuum chamber；40：Diaphragm pump；50：Molecular pump；60：Vacuum meter；70：It is lithium
Sulphur detection unit.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without creative efforts
All other embodiments obtained, shall fall within the protection scope of the present invention.
Fig. 1 is refer to, the utility model provides a kind of sulfur hexafluoride gas leakage live detection sampling apparatus, includes and adopt
Sample probe 10, sample conveying tube 20, vacuum chamber 30, sampling probe 10 are connected by sample conveying tube 20 with vacuum chamber 30.
Further, it refer to Fig. 1, sampling probe 10 includes filter 11, sampling pipe 12 and lever 13, filter 11 and holds
Handle 13 is located at the both ends of sampling pipe 12 respectively, and sampling pipe 12 is connected in the one end for being provided with lever 13 with sample conveying tube 20.Filter
First 11, sampling pipe 12 and lever 13 are coaxially disposed, and sampling pipe 12 is along lever 13 axially across 13 axle center of lever.
Wherein, the material of filter 11 is polytetrafluoroethylene (PTFE), is network in umbrella, its function is to avoid dust granule
Into sampling pipe 12.
Wherein, the material of lever 13 is polypropylene plastics, and the length of lever 13 is 20cm, outside diameter 3cm.
Further, Fig. 2 is refer to, sampling pipe 12 includes sampling pipe capillary 121,122 and of sampling pipe channel rubber
Outer tube layer 123 is sampled, sampling pipe channel rubber 122 and sampling outer tube layer 123 are sequentially sleeved at the outer of sampling pipe capillary 121
Face, and sampling pipe capillary 121, sampling pipe channel rubber 122 and sampling outer tube layer 123 are coaxially disposed.Wherein, sampling pipe capillary
Pipe 121 passes through the vitreous silica capillary of silanization treatment for surface, and the internal diameter of sampling pipe capillary 121 is 200 μm, its function
It is the suction, collection and transmission of air sample；The material of sampling pipe channel rubber 122 is fluorubber, its function is filling sampling
Gap between pipe capillary 121 and sampling outer tube layer 123, plays cushioning effect, while improve the elasticity of sampling pipe 12；Sampling pipe
The material of outer layer 123 is polytetrafluoroethylene (PTFE), and sampling 123 outside diameter of outer tube layer is 4mm, and thickness 0.5mm, its function is to improve sampling
The mechanical strength and dielectric strength of pipe 12.
Further, Fig. 3 is refer to, sample conveying tube 20 includes transfer tube capillary 21, transfer tube channel rubber 22
With transmission outer tube layer 23, transfer tube channel rubber 22 is sequentially sleeved at the outside of transfer tube capillary 21 with transmission outer tube layer 23,
And transfer tube capillary 21, transfer tube channel rubber 22 and transmission outer tube layer 23 are coaxially disposed.The length of sample conveying tube 20 is
7m, outside diameter 4 are mm, its function is the transmission of air sample.Wherein, transfer tube capillary 21 is surface by silanization treatment
Vitreous silica capillary, 21 internal diameter of transfer tube capillary are 200 μm, its function is transmission air sample；Transfer tube channel rubber
22 material is fluorubber, its function is the gap filled between transfer tube capillary 21 and transmission outer tube layer 23, plays buffering and makees
With, while improve the elasticity of sample conveying tube 20；The material for transmitting outer tube layer 23 is polytetrafluoroethylene (PTFE), transmits 23 outside diameter of outer tube layer
For 4mm, thickness 0.5mm, its function is to improve the mechanical strength and dielectric strength of sample conveying tube 20.
Fig. 4 is refer to, vacuum chamber 30 is located at the end of sample conveying tube 20, its function is to allow vacuum chamber 30 and sampling probe
10 form pressure differentials, are sucked at sampling probe 10 air sample by pressure differential, then be conveyed into by sample conveying tube 20
Vacuum chamber 30 is to realize air sample collection.Vacuum chamber 30 is equipped with 5 interfaces, respectively with sample conveying tube 20, diaphragm pump 40, point
Son pump 50, vacuum meter 60 and sulfur hexafluoride detection unit 70 connect.Diaphragm pump 40 and molecular pump 50, the pumping for vacuum chamber 30 are true
Manage in vacancy；Vacuum meter 60 is used for the measurement of pressure in vacuum chamber 30；Sulfur hexafluoride detection unit 70 is used for hexafluoro in air sample
Change the detection of sulphur gas content.
During implementation, vacuumize process is successively carried out to vacuum chamber 30 by diaphragm pump 40 and molecular pump 50, since sample passes
Defeated 20 internal diameter of pipe is smaller, and gas transport is limited, therefore in vacuum, the pressure in vacuum chamber 30 and at sampling probe 10
Difference is gradually increased, and pressure in vacuum chamber 30 is measured using vacuum meter 60, when pressure reaches certain value in vacuum chamber 30（Because of sampling
Popping one's head at 10, pressure and atmospheric pressure are essentially identical, and pressure differential can be calculated）, by sampling probe 10 close to sulfur hexafluoride electricity
Gas equipment leakage detection position, makes sampling probe 10 be in equipotential state with sulfur hexafluoride electrical equipment leak detection position,
And sucked the air sample at sulfur hexafluoride electrical equipment leak detection position in sampling probe 10 using sampling probe 10, then
Air sample is sent into vacuum chamber 30 by sample conveying tube 20.
The utility model proposes sulfur hexafluoride gas leakage live detection sampling apparatus visited using vacuum chamber 30 and sampling
Pressure differential between first 10, realizes air sample in low flow condition by sampling pipe capillary 121 and transfer tube capillary 21
Under collection and transmission, be effectively improved the transmission speed of air sample, reduce the time delay and recovery time of detection,
The dilution to air sample is efficiently avoid, improves the precision of detection.
Using the utility model proposes sulfur hexafluoride gas leakage live detection sampling apparatus come the sulfur hexafluoride that carries out
The method of gaseous sample live detection sampling, step are as follows：
1）Continuous vacuumize process is carried out to vacuum chamber 30, makes the pressure between the inside of vacuum chamber 30 and sampling probe 10
Difference maintains 10 all the time5Pa, the pressure in sampling process inside vacuum chamber 30 maintain 0.5 ~ 20Pa；Wherein, vacuum chamber 30
Vacuumize process concretely comprises the following steps：First vacuumized using diaphragm pump 10 make vacuum chamber 30 internal pressure be reduced to 300Pa with
Under, reusing molecular pump 11 and vacuumizing makes the internal pressure of vacuum chamber 30 be further reduced to below 20Pa；
2）By sampling probe 10 close to sulfur hexafluoride electrical equipment leak detection position, make sampling probe 10 and sulfur hexafluoride
Electrical equipment leak detection position is in equipotential state；
3）The air sample at sulfur hexafluoride electrical equipment leak detection position is sucked into sampling probe using sampling probe 10
In 10, then air sample is sent into vacuum chamber 30 by sample conveying tube 20.
Sulfur hexafluoride gas sample enters vacuum chamber 30 can be by the sulfur hexafluoride detection unit 70 that is connected with vacuum chamber 30
Carry out the detection of sulfur hexafluoride gas content in air sample.
The above, is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art is in the technical scope that the utility model discloses, the change that can readily occur in
Change or replace, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with described
Subject to scope of the claims.
Claims (8)
1. a kind of sulfur hexafluoride gas leaks live detection sampling apparatus, it is characterised in that includes sampling probe（10）, sample
Transfer tube（20）, vacuum chamber（30）, the sampling probe（10）Pass through the sample conveying tube（20）With the vacuum chamber（30）
It is connected.
2. sulfur hexafluoride gas according to claim 1 leaks live detection sampling apparatus, it is characterised in that the sampling
Probe（10）Include filter（11）, sampling pipe（12）And lever（13）, the filter（11）And lever（13）It is located at institute respectively
State sampling pipe（12）Both ends.
3. sulfur hexafluoride gas according to claim 2 leaks live detection sampling apparatus, it is characterised in that the sampling
Pipe（12）Include sampling pipe capillary（121）, sampling pipe channel rubber（122）With sampling outer tube layer（123）, the sampling pipe
Channel rubber（122）With sampling outer tube layer（123）It is sequentially sleeved at the sampling pipe capillary（121）Outside.
4. sulfur hexafluoride gas according to claim 3 leaks live detection sampling apparatus, it is characterised in that the sampling
Pipe capillary（121）Pass through the vitreous silica capillary of silanization treatment, the sampling pipe capillary for surface（121）Internal diameter
For 150 ~ 300 μm；The sampling pipe channel rubber（122）Material be fluorubber；The sampling outer tube layer（123）Material be
Polytetrafluoroethylene (PTFE), the sampling outer tube layer（123）Outside diameter is 3 ~ 6mm, and thickness is 0.4 ~ 0.6mm.
5. sulfur hexafluoride gas according to claim 1 leaks live detection sampling apparatus, it is characterised in that the sample
Transfer tube（20）Include transfer tube capillary（21）, transfer tube channel rubber（22）With transmission outer tube layer（23）, the transmission
Pipe channel rubber（22）With transmission outer tube layer（23）It is sequentially sleeved at the transfer tube capillary（21）Outside.
6. sulfur hexafluoride gas according to claim 5 leaks live detection sampling apparatus, it is characterised in that the transmission
Pipe capillary（21）Pass through the vitreous silica capillary of silanization treatment, the transfer tube capillary for surface（21）Internal diameter is
150~300μm；The transfer tube channel rubber（22）Material be fluorubber；The transmission outer tube layer（23）Material be poly- four
Vinyl fluoride, the transmission outer tube layer（23）Outside diameter is 2 ~ 4mm, and thickness is 0.3 ~ 0.5mm.
7. sulfur hexafluoride gas according to claim 2 leaks live detection sampling apparatus, it is characterised in that the filter
（11）Material be polytetrafluoroethylene (PTFE), in umbrella.
8. sulfur hexafluoride gas according to claim 2 leaks live detection sampling apparatus, it is characterised in that the lever
（13）Material be polypropylene plastics, the lever（13）Length be 10 ~ 20cm, outside diameter is 2 ~ 4cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721083163.6U CN207280817U (en) | 2017-08-28 | 2017-08-28 | Sulfur hexafluoride gas leaks live detection sampling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721083163.6U CN207280817U (en) | 2017-08-28 | 2017-08-28 | Sulfur hexafluoride gas leaks live detection sampling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207280817U true CN207280817U (en) | 2018-04-27 |
Family
ID=61983817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721083163.6U Active CN207280817U (en) | 2017-08-28 | 2017-08-28 | Sulfur hexafluoride gas leaks live detection sampling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207280817U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449642A (en) * | 2017-08-28 | 2017-12-08 | 广西电网有限责任公司电力科学研究院 | Sulfur hexafluoride gas leaks live detection sampling apparatus and the method for sampling |
| CN108469370A (en) * | 2018-06-13 | 2018-08-31 | 广西电网有限责任公司电力科学研究院 | The enrichment of sulfur hexafluoride sample gas decomposition product, resolver |
-
2017
- 2017-08-28 CN CN201721083163.6U patent/CN207280817U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449642A (en) * | 2017-08-28 | 2017-12-08 | 广西电网有限责任公司电力科学研究院 | Sulfur hexafluoride gas leaks live detection sampling apparatus and the method for sampling |
| CN108469370A (en) * | 2018-06-13 | 2018-08-31 | 广西电网有限责任公司电力科学研究院 | The enrichment of sulfur hexafluoride sample gas decomposition product, resolver |
| CN108469370B (en) * | 2018-06-13 | 2023-10-20 | 广西电网有限责任公司电力科学研究院 | Enrichment and analysis device for sulfur hexafluoride sample gas decomposition products |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207280817U (en) | Sulfur hexafluoride gas leaks live detection sampling apparatus | |
| EP1522838B1 (en) | Leak testing of hermetic enclosures for implantable energy storage devices | |
| US20190107517A1 (en) | Refilling-type online chromatographic detector for sulphur hexafluoride decomposition products | |
| CN112197912B (en) | Leak detection device and leak detection method | |
| CN108519545A (en) | It is a kind of it is extremely cold under the conditions of high-tension insulator edge flashing experimental provision and method | |
| WO2018223441A1 (en) | High-speed suction gun leakage detection method and device for sealed element of large-sized transformer | |
| CN105387342B (en) | The micro-water treatment system of GIS air chamber | |
| CN206002261U (en) | A kind of device for detecting high-power transformer cannula tip sealing tiny leakage | |
| CN107449642A (en) | Sulfur hexafluoride gas leaks live detection sampling apparatus and the method for sampling | |
| CN212674382U (en) | Air tightness detector | |
| CN106370764A (en) | Refilling type sulfur hexafluoride decomposition product chromatography online detector | |
| WO2021189623A1 (en) | On-line diagnosis method and apparatus for internal fault of sulfur hexafluoride electrical device | |
| CN103675171B (en) | Discharge Ionization Current Detector and gas chromatograph | |
| CN102419327A (en) | Detection device for SF6 gas decomposition product | |
| CN103776602B (en) | A kind of vacuum detection device to box system | |
| CN112710437A (en) | SF6Dry type vacuum leak detection system and leak detection method for breaker box body | |
| CN209372798U (en) | The online concentration detection system of sulfur hexafluoride in a kind of electrical cabinet | |
| CN204614724U (en) | A kind of SF6 circuit breaker excessive water content in-situ processing device | |
| CN208314123U (en) | It is a kind of it is extremely cold under the conditions of high-tension insulator edge flashing experimental provision | |
| CN206095858U (en) | Gas detection surveys device for electrical equipment | |
| CN109655725A (en) | The quickly device and method of detection solid insulating layer Paschen performance at low pressure | |
| CN206974752U (en) | For SF6The novel sampling device of gas | |
| CN207502451U (en) | A kind of multi-channel type gas analyzer | |
| CN203753584U (en) | Standard oil sample storage bag | |
| CN209542219U (en) | Sulfur hexafluoride leakage monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |