CN105758589A - Platform for checking double-channel SF6 infrared imaging leak detector - Google Patents
Platform for checking double-channel SF6 infrared imaging leak detector Download PDFInfo
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- CN105758589A CN105758589A CN201610319956.7A CN201610319956A CN105758589A CN 105758589 A CN105758589 A CN 105758589A CN 201610319956 A CN201610319956 A CN 201610319956A CN 105758589 A CN105758589 A CN 105758589A
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- gas
- electromagnetic valve
- cylinder
- gas circuit
- surge tank
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/38—Investigating fluid-tightness of structures by using light
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a platform for checking a double-channel SF6 infrared imaging leak detector. The platform comprises an SF6 gas bottle, a linear stepping motor, an air cylinder, a buffer tank and electromagnetic valves F1-F4 arranged in gas circuits and is characterized in that the precise air cylinder is adopted, and the control end of the precise air cylinder is connected with the output end of the linear stepping motor; the output end of the SF6 gas bottle is connected with the input end of the buffer tank through the gas circuit provided with the electromagnetic valve F1 and the electromagnetic valve F4 and is connected with the output end of the air cylinder through the gas circuit provided with the electromagnetic valve F1 and the electromagnetic valve F2, and the output end of the air cylinder is connected with a gas outlet needle through the gas circuit provided with the electromagnetic valve F3; multiple gas circuits provided with control valves are arranged above the buffer tank, capillary micropore needles different in diameter are arranged at the tail ends of all the gas circuits respectively, and a constant temperature plate at the temperature of 50 DEG C is arranged 5 cm away from the gas outlet needle and the capillary micropore needles. The gas outlet needle and the capillary micropore needles different in pore diameter are adopted to form a double-channel checking system, the constant temperature plate at the temperature of 50 DEG C is adopted as a background heat source, and therefore the platform is not affected by checking environment temperature and is good in working performance.
Description
Technical field
The present invention provides a kind of Dual-channel type SF6Infrared imaging leak detector verification platform, belongs to SF6Infrared imaging leak detector calibration technology field.
Background technology
SF6Electrical equipment has the advantages such as reliable, floor space is little and maintenance workload is few, uses in a large number in power industry.It is subject to SF6The impact of the factor such as loss, SF in electrical equipment product design ability, manufacturing technology level, installation quality and transportation6Easily there is leakage problem in electrical equipment, will result in many-sided harm: SF6Gas leakage causes that electrical equipment arc extinguishing ability declines, and threatens SF6Breaker safe runs；SF6Gas leakage need to electrical equipment QI invigorating to rated pressure, and this operation need to electrical equipment power-off, and operating process is complicated.Therefore, SF is regularly carried out6Leakage inspection work becomes the important process of daily power industry O&M.
Properly functioning for not affecting electrical equipment, currently mainly adopt SF6Infrared imaging leak detector is to SF6Charged fixed point leak detection work carried out by electrical equipment, therefore, needs regularly SF6Infrared imaging leak detector verifies.Currently employed single-point standard leak source is to SF6Infrared imaging leak detector verifies, and standard leak source flux is by mass flowmenter control, and flow-control ranges for 0.06～0.2mL/min, SF6Gas flows to environment through injection needle and carrys out the leakage of simulated field point-like.When actual checking procedure finds ambient temperature lower than 10 DEG C, low discharge SF6Gas and air are to infrared Absorption similar intensity, SF6Infrared imaging leak detector cannot detect low discharge SF6Gas, and single-point standard leak source verification SF6Infrared imaging leak detector work efficiency is relatively low, it is impossible to meet daily verification business demand, therefore, for overcoming ambient temperature to simulation low discharge SF6The impact of gas leakage, improves existing tester efficiency, is badly in need of a kind of New type of S F6Infrared imaging leak detector calibration technology.
Summary of the invention
It is an object of the invention to provide and a kind of can overcome drawbacks described above, not influenced by ambient temperature, the verification high Dual-channel type SF of efficiency6Infrared imaging leak detector verification platform.Its technical scheme is:
A kind of Dual-channel type SF6Infrared imaging leak detector verification platform, including SF6Gas cylinder, linear stepping motor, cylinder, the surge tank that heat-insulation layer is set and the electromagnetic valve F being arranged in gas circuit1～F4, the piston rod of the output termination cylinder of linear stepping motor, it is characterised in that: cylinder adopts accurate cylinder；SF6The outfan of gas cylinder is respectively through being provided with electromagnetic valve F1With electromagnetic valve F4Gas circuit connect the input of surge tank, through being provided with electromagnetic valve F1With electromagnetic valve F2Gas circuit connect the outfan of cylinder, the outfan of cylinder is also through being provided with electromagnetic valve F3Gas circuit pick out air tube head；Surge tank is provided with pressure transducer and temperature sensor, surge tank be arranged over multiple gas circuit with controlling valve, the end of each gas circuit is provided with the diameter capillary micropore syringe needle at 0.1～0.4mm, and the diameter of each capillary micropore syringe needle is not etc.；Syringe needle is given vent to anger and capillary micropore syringe needle 5cm place sets one 50 DEG C of temperature-constant plates in distance；The group relation of joining of pressure transducer and capillary micropore needle aperture is:Wherein: Q is quantity of gas leakage, r is capillary micropore needle aperture, P1For surge tank pressure, PatmFor atmospheric pressure, T is thermodynamic temperature in surge tank, and M is SF6Molecular weight gas.
Described channel-type SF6Infrared imaging leak detector verification platform, SF6The output gas circuit of gas cylinder is provided with pressure maintaining valve.
The present invention compared with prior art, has an advantage in that:
1, this device adopt 50 DEG C of temperature-constant plate thermals source as a setting, can be prevented effectively from relatively low ambient temperature to simulation low discharge SF6The impact of gas leakage.
2, this patent adopts syringe needle and the multiple aperture capillary micropore syringe needle composition Dual-channel type SF not etc. that gives vent to anger6Infrared imaging leak detector calibration technology, it is simple to control flow, can effectively promote verification efficiency, meet production verification demand.
3, this patent adopts the quantitative manner precision that accurate cylinder, pressure transducer and capillary micropore needle aperture combine to control SF6Quantity of gas leakage Q mathematical model (formula 1) simulated field point-like leaks, and has more high control precision than traditional approach.
Wherein: Q is quantity of gas leakage, r is capillary micropore needle aperture, P1For surge tank pressure, PatmFor atmospheric pressure, T is thermodynamic temperature in surge tank, and M is SF6Molecular weight gas.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
In figure: 1, SF6Gas cylinder 2, linear stepping motor 3, cylinder 4, heat-insulation layer 5, surge tank 6, syringe needle 7 of giving vent to anger, control valve 8, capillary micropore syringe needle 9, temperature-constant plate 10, pressure maintaining valve 11, pressure transducer 12, temperature sensor F1～F4, electromagnetic valve
Detailed description of the invention
By the following examples present disclosure is illustrated in further detail.In the embodiment shown in fig. 1: cylinder 3 adopts accurate cylinder, the piston rod of the output termination cylinder 3 of linear stepping motor 2.SF6The outfan of gas cylinder 1 is respectively through being provided with electromagnetic valve F1With electromagnetic valve F4Gas circuit connect the input of surge tank 5, through being provided with electromagnetic valve F1With electromagnetic valve F2Gas circuit connect the outfan of cylinder 3, the outfan of cylinder 3 is also through being provided with electromagnetic valve F3Gas circuit pick out air tube head 6.Surge tank 5 is provided with pressure transducer 11, surge tank 5 be arranged over 4 gas circuits with controlling valve 7, capillary micropore syringe needle 8 diameter that 4 gas circuit ends are provided with is followed successively by 0.1mm, 0.2mm, 0.3mm and 0.4mm；Syringe needle 6 is given vent to anger and capillary micropore syringe needle 85cm place of giving vent to anger sets one 50 DEG C of temperature-constant plates 9 in distance.
Claims (2)
1. a Dual-channel type SF6Infrared imaging leak detector verification platform, including SF6Gas cylinder (1), linear stepping motor (2), cylinder (3), the surge tank (5) that heat-insulation layer (4) are set and the electromagnetic valve F being arranged in gas circuit1～F4, the piston rod of output termination cylinder (3) of linear stepping motor (2), it is characterised in that: cylinder (3) adopts accurate cylinder (3)；SF6The outfan of gas cylinder (1) is respectively through being provided with electromagnetic valve F1With electromagnetic valve F4Gas circuit connect the input of surge tank (5), through being provided with electromagnetic valve F1With electromagnetic valve F2Gas circuit connect the outfan of cylinder (3), the outfan of cylinder (3) is also through being provided with electromagnetic valve F3Gas circuit pick out air tube head (6)；Surge tank (5) is provided with pressure transducer (11) and temperature sensor (12), surge tank (5) be arranged over multiple with control valve (7) gas circuit, the end of each gas circuit is provided with diameter capillary micropore syringe needle (8) at 0.1～0.4mm, and the diameter of each capillary micropore syringe needle (8) is not etc.；Giving vent to anger syringe needle (6) and capillary micropore syringe needle (8) 5cm place sets one 50 DEG C of temperature-constant plates (9) in distance, the group relation of joining in pressure transducer (11) and capillary micropore syringe needle (8) aperture is:Wherein: Q is quantity of gas leakage, r is capillary micropore syringe needle (8) aperture, P1For surge tank (5) pressure, PatmFor atmospheric pressure, T is surge tank (5) interior thermodynamic temperature, and M is SF6Molecular weight gas.
2. channel-type SF according to claim 16Infrared imaging leak detector verification platform, it is characterised in that: SF6The output gas circuit of gas cylinder (1) is provided with pressure maintaining valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319956.7A CN105758589A (en) | 2016-05-13 | 2016-05-13 | Platform for checking double-channel SF6 infrared imaging leak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319956.7A CN105758589A (en) | 2016-05-13 | 2016-05-13 | Platform for checking double-channel SF6 infrared imaging leak detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105758589A true CN105758589A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610319956.7A Pending CN105758589A (en) | 2016-05-13 | 2016-05-13 | Platform for checking double-channel SF6 infrared imaging leak detector |
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| Country | Link |
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| CN (1) | CN105758589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741405A (en) * | 2017-10-02 | 2018-02-27 | 国网山西省电力公司电力科学研究院 | Portable SF6Infrared leak detector verification gas generating unit and method for generation |
| CN110411663A (en) * | 2019-08-21 | 2019-11-05 | 广西电网有限责任公司电力科学研究院 | A kind of SF6Micro constant pressure Leaking Simulation devices and methods therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5163315A (en) * | 1990-07-10 | 1992-11-17 | Daikin Industries, Ltd. | Leak detecting method for vessels |
| CN202533241U (en) * | 2011-08-17 | 2012-11-14 | 青海电力科学试验研究院 | Imager device for inspecting SF6 gas leakage |
| CN203745161U (en) * | 2014-03-04 | 2014-07-30 | 国家电网公司 | SF6 gas positive pressure leak gas supply device |
-
2016
- 2016-05-13 CN CN201610319956.7A patent/CN105758589A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5163315A (en) * | 1990-07-10 | 1992-11-17 | Daikin Industries, Ltd. | Leak detecting method for vessels |
| CN202533241U (en) * | 2011-08-17 | 2012-11-14 | 青海电力科学试验研究院 | Imager device for inspecting SF6 gas leakage |
| CN203745161U (en) * | 2014-03-04 | 2014-07-30 | 国家电网公司 | SF6 gas positive pressure leak gas supply device |
Non-Patent Citations (2)
| Title |
|---|
| 弓艳朋 等: "SF6气体泄漏成像仪检验技术研究", 《电测与仪表》 * |
| 胡连清 等: "SF6气体红外成像检漏仪与定量检漏仪现场使用经验探讨", 《高压电器》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741405A (en) * | 2017-10-02 | 2018-02-27 | 国网山西省电力公司电力科学研究院 | Portable SF6Infrared leak detector verification gas generating unit and method for generation |
| CN110411663A (en) * | 2019-08-21 | 2019-11-05 | 广西电网有限责任公司电力科学研究院 | A kind of SF6Micro constant pressure Leaking Simulation devices and methods therefor |
| CN110411663B (en) * | 2019-08-21 | 2024-10-18 | 广西电网有限责任公司电力科学研究院 | SF (sulfur hexafluoride)6Trace constant pressure leakage simulation device and method thereof |
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Application publication date: 20160713 |
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