CN204346774U - Detect the sulfur hexafluoride sampler that pre reduction gathers gas - Google Patents
Detect the sulfur hexafluoride sampler that pre reduction gathers gas Download PDFInfo
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- CN204346774U CN204346774U CN201420862384.3U CN201420862384U CN204346774U CN 204346774 U CN204346774 U CN 204346774U CN 201420862384 U CN201420862384 U CN 201420862384U CN 204346774 U CN204346774 U CN 204346774U
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Abstract
Detect the sulfur hexafluoride sampler that pre reduction gathers gas, comprise sampling jar and gas washing cavity, connected by connecting pipe between the bottleneck of sampling jar and the bottleneck of gas washing cavity, be provided with three-way switch valve in the middle part of connecting pipe, the 3rd interface of three-way switch valve is connected with stopple coupon; The bottom of sampling jar is provided with base, sampling jar outside is provided with inner barrel, inner barrel lower end is located on base, cylindrical cavity is formed between inner barrel inwall and sampling jar outer wall, columnar heating tape is provided with in cylindrical cavity, be provided with in base and the heat-insulation layer contacted bottom sampling jar, be provided with in heat-insulation layer and the temperature sensor contacted bottom sampling jar.The utility model can provide reliably, real field experiment gas, reduces sampling jar inwall to sample gas adsorbability, that guarantee gas sampled with consistance that is gas to be sampled.
Description
Technical field
The utility model relates to a kind of sulfur hexafluoride sampler specially the detection pre reduction of sulfur hexafluoride gas sampling in electrical equipment being gathered to gas.
Background technology
Sulfur hexafluoride is primary insulation medium and the arc-extinguishing medium of gas insulated electric apparatus, and the quality of sulfur hexafluoride gas and gas insulated electric apparatus insulating property and arc extinction performance have much relations.Therefore, no matter country or the relevant departments of power industry are all propose corresponding gaseous mass examination criteria or supervision and management code, regulation to the new gas of sulfur hexafluoride or to the gas run in sulfur hexafluoride gas-insulating electrical equipment when gas and equipment run and disintegrates.Wherein, just there is the regulation to sulfur hexafluoride gas sampling method, as " DL/T 1032-2006 electrical equipment sulfur hexafluoride (SF
6) gas sampling method " and in detailed regulation has been carried out to the sampling container of sulfur hexafluoride gas, the method for sampling and Sample storage, true to ensure the sample gathered.It should be noted that, the sampling method in above-mentioned standard is not only applicable to the electrical equipment that isolating switch, combined electric, transformer, mutual inductor etc. use sulfur hexafluoride gas, is applicable to sulfur hexafluoride gas steel cylinder and gas-holder yet.
According to " DL/T 1032-2006 electrical equipment sulfur hexafluoride (SF
6) gas sampling method " and relevant regulations, sampling container has 2 kinds, steel cylinder and polybag.When sulfur hexafluoride gas pressure is lower than 0.2MPa, both all can use; When sulfur hexafluoride gas pressure is higher than 0.2MPa, just can only apply there is reliever stainless steel steel cylinder as sampling container.In view of this sampling container of polybag have pressure too high time burst the suspicion of sampling bag, the electric power chemistry institute of each Utilities Electric Co. or chemistry institute are more prone to application stainless steel steel cylinder as sampling container.
" DL/T 1032-2006 electrical equipment sulfur hexafluoride (SF
6) gas sampling method " and in the same specification concept of sampling jar and sampler: sampling bag: be with valvular composite plastic sealing bag; Sampling jar: the canister that can bear gaseous tension; Sampler: with application of vacuum ability and the device there is electrical equipment being connected with sampling jar.Specify that " sampler ", further comprises the part be connected with electrical equipment.
But steel cylinder sampler also exists some drawbacks in application process: one, there is faint adsorbability to sulfur hexafluoride gas in bottle inwall; Its two, if in the sampling gas gathered from sulfur hexafluoride electrical equipment containing strong corrosive material as HF, SO
2deng, when these materials and sampling steel cylinder inwall making contact, there is faint adsorbability to sulfur hexafluoride gas in inner wall of steel cylinder, will in a small contact area with sampling steel cylinder inwall material generation chemical reaction, corrosion inner wall of steel cylinder, thus affect the authenticity of gas sampled.
Steel cylinder sampler, before sampling, first vacuumizes process to steel cylinder sampler inside, makes gas sample container inclusion-free gas to ensure the former state of gas sampled and pollution-free.But vacuumize process to vacuumize steel cylinder sampler and Subsampling pipeline, do not accomplish to vacuumize process to sampling container and the portion gas piping installation that is connected with sample devices, like this, when carrying out gas sample operation, the foreign gases such as the minute dusts of air, tube wall in this part sampling line, will be had also to be entered gas sample collector by as sample gas.And in site work, because electrical equipment is general all taller and bigger, " electrical equipment is connected with sampling jar " sampling line reaches 1 ~ 2 meter usually, like this, the pollution of gas sampled in sampling container will be caused, affect the former state of gas sampled sample, and then affect the Testing index of gas sampled.
Utility model content
The utility model, in order to solve weak point of the prior art, provides the sulfur hexafluoride sampler that a kind of structure is simple, detection pre reduction that is that can improve sulfur hexafluoride gas sample authenticity gathers gas.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: inspection detects the sulfur hexafluoride sampler that pre reduction gathers gas, comprise sampling jar, the bottom of described sampling jar is provided with base, sampling jar outside is provided with inner barrel, inner barrel lower end is located on base, cylindrical cavity is formed between inner barrel inwall and sampling jar outer wall, columnar heating tape is provided with in cylindrical cavity, be provided with in base and the heat-insulation layer contacted bottom sampling jar, be provided with in heat-insulation layer and the temperature sensor contacted bottom sampling jar, heating tape is connected with temperature controller by wire, temperature controller is connected with temperature sensor by data signal line,
The outside of base and inner barrel is provided with outer cylinder body, upper annular plate is provided with between outer cylinder body upper end and sampling jar outer wall, outer cylinder body upper inside wall and bottom are provided with middle annular slab and lower annular plate respectively and between inner barrel outer wall, outer cylinder body inwall, inner barrel outer wall, columnar gas washing cavity is encircled between middle annular slab and lower annular plate, the bottle plug of sampling jar is provided with bottle stopper, connecting pipe is inserted with in bottle stopper, connecting pipe one end extend into sampling jar inside, the connecting pipe other end extend in gas washing cavity through upper annular plate and middle annular slab, connecting pipe is provided with sampling pressure vacuum meter closing on sampling jar place, connecting pipe is provided with gas washing pressure vacuum meter closing on gas washing cavity place, three-way switch valve is provided with in the middle part of connecting pipe, 3rd interface of three-way switch valve is connected with stopple coupon by straight joint, straight joint is connected with pressure vacuum gauge.
Adopt technique scheme, the utility model all adopts inertia passivation process to be provided with one deck corrosion-resistant finishes at the inwall of the inwall of sampling jar, the inwall of connecting pipe, the inwall of three-way switch valve and stopple coupon.
Before carrying out gas sample, need to vacuumize sampling jar.Gas piping connects vaccum-pumping equipment, carries out vacuum pumping to whole sampling jar; The vacuum tightness of sampling jar can be judged according to the instruction of the sampling pressure vacuum meter on sampling jar and the gas washing pressure vacuum meter on gas washing cavity.After vacuumizing, carry out gas sample, stopple coupon is connected electrical equipment to be sampled.Now, be not vacuum in three-way switch valve to the stopple coupon of electrical equipment to be sampled, owing to cruelly leaking in atmosphere, air can be full of in this section of stopple coupon, perhaps, tube wall has the impurity such as minute dusts, air in this part pipeline and minute dusts pollute to gas to be sampled, affect the former state of gas sampled sample, affect the Testing index of gas sampled.So this part foreign gas needs first to rinse out.Operation three-way switch valve, make electrical equipment to be sampled and gas washing cavity connects, the air in stopple coupon and impurity are under the effect of effluent air from sampling equipment, and be charged in gas washing cavity, stopple coupon is rinsed.After gas washing, then operate three-way switch valve, equipment to be sampled is communicated with sampling jar, gas to be sampled flows into collecting bottle from equipment to be sampled, completes the sampling of gas.After sampling, then operate three-way switch valve, make gas washing cavity and sampling jar be in closed condition.Wash away in the portion gas piping installation that sampling jar is connected with sample devices not accomplish to vacuumize in gas sample process and process and the impurity such as minute dusts of the air existed, tube wall, ensure the former state of gas to be sampled.
The inwall of the inwall of sampling jar, the inwall of connecting pipe, three-way switch valve and the inwall of stopple coupon all adopt inertia passivation process to be provided with one deck corrosion-resistant finishes.Make sampling jar to SF after process
6gas and decomposition product thereof have compatibility and the adsorbability of superfine trace.On the one hand, due to the inertia Passivation Treatment of the materials such as sampling jar, connecting pipe, stopple coupon and three-way switch valve, can effectively prevent to contain strong corrosive material as HF, SO in sampling gas
2deng with chemical reaction during sampling steel cylinder inwall making contact, on the other hand, through the area of transpassivation than stainless steel material, quality is wanted closely and smooth, effectively can weaken sampling jar inwall to SF
6the adsorbability of gas and analyte thereof.
Treated sampling jar is to SF
6the adsorbability of gas and analyte thereof weakens, and the chemical reaction that the sample gas of less as much as possible sampling jar inwall material and collection may exist, thus ensure that the time of day of sample, carry out SF with chromatogram or mass spectrum at the scene to being not easy to
6the occasion that GAS QUALITY is analyzed is significant.
The uniform heating tape by the periphery design of sampling jar, when needs carry out test in laboratory from sampling jar taking-up sample gas or analyze, namely during sample gas output detections, heating tape is heated slightly to sampling jar, now, the thermal motion of the gas molecule of sampling jar inwall absorption is accelerated, and after molecule absorption heat, the hot kinetic energy of molecule strengthens, when the hot kinetic energy of molecule is greater than the suction-operated of sampling jar inner wall material confrontation molecule, molecule is broken through the suction-operated of sampling jar inwall and becomes free molecule.Then carry out real-time sample gas to export, now, the sample gas exported from sampling jar reflects the gas composition in sulfur hexafluoride electrical equipment really, or the gas composition in sulfur hexafluoride gas-holder or steel cylinder.This type of heating reduces sampling jar inwall further to the adsorbability of sample gas and influence power.Certainly, heating-up temperature can not be too high, between each component of gas gathered, complicated chemical reaction may occur when heating-up temperature is too high, can pollute or destroy again to the sample gas gathered.Heating-up temperature is monitored in real time by temperature sensor and temperature controller.
In sum, the utility model overcomes the defect that common steel cylinder sampling jar on the market exists, for user provide reliably, field experiment gas really.Prevented the reaction of sampling jar inwall and sample gas middle acid substance by the structure increasing special corrosion-resistant finishes in sampling jar inwall and connecting tube, and reduce sampling jar inwall to sample gas adsorbability.The utility model is not only applicable to the sampling of sulfur hexafluoride (SF6) gas, also be applicable to the sampling of other gases, particularly some special gases are as the sampling of corrosive gas hydrogen fluoride gas (HF), that can guarantee gas sampled with consistance that is gas to be sampled.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, detection pre reduction of the present utility model gathers the sulfur hexafluoride sampler of gas, comprise sampling jar 1, the bottom of described sampling jar 1 is provided with base 2, sampling jar 1 outside is provided with inner barrel 3, inner barrel 3 lower end is located on base 2, cylindrical cavity is formed between inner barrel 3 inwall and sampling jar 1 outer wall, columnar heating tape 4 is provided with in cylindrical cavity, be provided with in base 2 and the heat-insulation layer 5 contacted bottom sampling jar 1, be provided with in heat-insulation layer 5 and the temperature sensor 6 contacted bottom sampling jar 1, heating tape 4 is connected with temperature controller 7 by wire 7, temperature controller 7 is connected with temperature sensor 6 by data signal line 8.
The outside of base 2 and inner barrel 3 is provided with outer cylinder body 9, upper annular plate 10 is provided with between outer cylinder body 9 upper end and sampling jar 1 outer wall, outer cylinder body 9 upper inside wall and bottom are provided with middle annular slab 11 and lower annular plate 12 respectively and between inner barrel 3 outer wall, outer cylinder body 9 inwall, inner barrel 3 outer wall, columnar gas washing cavity 13 is encircled between middle annular slab 11 and lower annular plate 12, the bottle plug of sampling jar 1 is provided with bottle stopper 14, connecting pipe 15 is inserted with in bottle stopper 14, it is inner that connecting pipe 15 one end extend into sampling jar 1, connecting pipe 15 other end extend in gas washing cavity 13 through upper annular plate 10 and middle annular slab 11, connecting pipe 15 is provided with sampling pressure vacuum meter 16 closing on sampling jar 1 place, connecting pipe 15 is provided with gas washing pressure vacuum meter 17 closing on gas washing cavity 13 place, three-way switch valve 18 is provided with in the middle part of connecting pipe 15, 3rd interface of three-way switch valve 18 is connected with stopple coupon 20 by straight joint 19, straight joint 19 is connected with pressure vacuum gauge 23, pressure vacuum gauge 23 monitors the outlet pressure in the middle of sampling electrical equipment.
The inwall of sampling jar 1, the inwall of connecting pipe 15, the inwall of three-way switch valve 18 and the inwall of stopple coupon 20 all adopt inertia passivation process to be provided with one deck corrosion-resistant finishes 21.
Before carrying out gas sample, need to vacuumize sampling jar 1.Gas piping connects vaccum-pumping equipment, carries out vacuum pumping to whole sampling jar 1; The vacuum tightness of sampling jar 1 can be judged according to the instruction of the sampling pressure vacuum meter 16 on sampling jar 1 and the gas washing pressure vacuum meter 17 on gas washing cavity 13.After vacuumizing, carry out gas sample, stopple coupon 20 is connected electrical equipment to be sampled.Now, it is not vacuum in three-way switch valve 18 to the stopple coupon 20 of electrical equipment to be sampled, owing to cruelly leaking in atmosphere, air can be full of in this section of stopple coupon 20, perhaps, tube wall has the impurity such as minute dusts, air in this part pipeline and minute dusts pollute to gas to be sampled, affect the former state of gas sampled sample, affect the Testing index of gas sampled.So this part foreign gas needs first to rinse out.Operation three-way switch valve 18, electrical equipment to be sampled is communicated with gas washing cavity 13, and the air in stopple coupon 20 and impurity are under the effect of effluent air from sampling equipment, and be charged in gas washing cavity 13, stopple coupon 20 is rinsed.After gas washing, then operate three-way switch valve 18, equipment to be sampled is communicated with sampling jar 1, gas to be sampled flows into collecting bottle from equipment to be sampled, completes the sampling of gas.After sampling, then operate three-way switch valve 18, make gas washing cavity 13 and sampling jar 1 be in closed condition.Wash away in the portion gas piping installation that sampling jar 1 is connected with sample devices not accomplish to vacuumize in gas sample process and process and the impurity such as minute dusts of the air existed, tube wall, ensure the former state of gas to be sampled.
The inwall of sampling jar 1, the inwall of connecting pipe 15, the inwall of three-way switch valve 18 and the inwall of stopple coupon 20 all adopt inertia passivation process to be provided with one deck corrosion-resistant finishes 21.Sampling jar 1 couple of SF is made after process
6gas and decomposition product thereof have compatibility and the adsorbability of superfine trace.On the one hand, due to the inertia Passivation Treatment of the materials such as sampling jar 1, connecting pipe 15, stopple coupon 20 and three-way switch valve 18, can effectively prevent to contain strong corrosive material as HF, SO in sampling gas
2deng with chemical reaction during sampling steel cylinder inwall making contact, on the other hand, through the area of transpassivation than stainless steel material, quality is wanted closely and smooth, effectively can weaken sampling jar 1 inwall to SF
6the adsorbability of gas and analyte thereof.
Treated sampling jar 1 couple of SF
6the adsorbability of gas and analyte thereof weakens, and the chemical reaction that the sample gas of less as much as possible sampling jar 1 inwall material and collection may exist, thus ensure that the time of day of sample, carry out SF with chromatogram or mass spectrum at the scene to being not easy to
6the occasion that GAS QUALITY is analyzed is significant.
The uniform heating tape 4 by the periphery design of sampling jar 1, when needs from sampling jar 1 take out sample gas carry out test in laboratory or analyze time, namely during sample gas output detections, 4 pairs, heating tape sampling jar 1 heats slightly, now, the thermal motion of the gas molecule of sampling jar 1 inwall absorption is accelerated, and after molecule absorption heat, the hot kinetic energy of molecule strengthens, when the hot kinetic energy of molecule is greater than the suction-operated of sampling jar 1 inner wall material confrontation molecule, molecule is broken through the suction-operated of sampling jar 1 inwall and becomes free molecule.Then carry out real-time sample gas to export, now, the sample gas exported from sampling jar 1 reflects the gas composition in sulfur hexafluoride electrical equipment really, or the gas composition in sulfur hexafluoride gas-holder or steel cylinder.This type of heating reduces sampling jar 1 inwall further to the adsorbability of sample gas and influence power.Certainly, heating-up temperature can not be too high, between each component of gas gathered, complicated chemical reaction may occur when heating-up temperature is too high, can pollute or destroy again to the sample gas gathered.Heating-up temperature is monitored in real time by temperature sensor 6 and temperature controller 7.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although be described in detail the utility model with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify to the utility model or equivalent replacement, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (1)
1. detect the sulfur hexafluoride sampler that pre reduction gathers gas, comprise sampling jar, it is characterized in that: the bottom of described sampling jar is provided with base, sampling jar outside is provided with inner barrel, inner barrel lower end is located on base, cylindrical cavity is formed between inner barrel inwall and sampling jar outer wall, columnar heating tape is provided with in cylindrical cavity, be provided with in base and the heat-insulation layer contacted bottom sampling jar, be provided with in heat-insulation layer and the temperature sensor contacted bottom sampling jar, heating tape is connected with temperature controller by wire, temperature controller is connected with temperature sensor by data signal line,
The outside of base and inner barrel is provided with outer cylinder body, upper annular plate is provided with between outer cylinder body upper end and sampling jar outer wall, outer cylinder body upper inside wall and bottom are provided with middle annular slab and lower annular plate respectively and between inner barrel outer wall, outer cylinder body inwall, inner barrel outer wall, columnar gas washing cavity is encircled between middle annular slab and lower annular plate, the bottle plug of sampling jar is provided with bottle stopper, connecting pipe is inserted with in bottle stopper, connecting pipe one end extend into sampling jar inside, the connecting pipe other end extend in gas washing cavity through upper annular plate and middle annular slab, connecting pipe is provided with sampling pressure vacuum meter closing on sampling jar place, connecting pipe is provided with gas washing pressure vacuum meter closing on gas washing cavity place, three-way switch valve is provided with in the middle part of connecting pipe, 3rd interface of three-way switch valve is connected with stopple coupon by straight joint, straight joint is connected with pressure vacuum gauge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420862384.3U CN204346774U (en) | 2014-12-31 | 2014-12-31 | Detect the sulfur hexafluoride sampler that pre reduction gathers gas |
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| CN201420862384.3U CN204346774U (en) | 2014-12-31 | 2014-12-31 | Detect the sulfur hexafluoride sampler that pre reduction gathers gas |
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| CN204346774U true CN204346774U (en) | 2015-05-20 |
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| CN201420862384.3U Expired - Fee Related CN204346774U (en) | 2014-12-31 | 2014-12-31 | Detect the sulfur hexafluoride sampler that pre reduction gathers gas |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20181231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |