CN204613182U - A kind of sulfur hexafluoride gas acidity pick-up unit - Google Patents
A kind of sulfur hexafluoride gas acidity pick-up unit Download PDFInfo
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- CN204613182U CN204613182U CN201520245570.7U CN201520245570U CN204613182U CN 204613182 U CN204613182 U CN 204613182U CN 201520245570 U CN201520245570 U CN 201520245570U CN 204613182 U CN204613182 U CN 204613182U
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- Prior art keywords
- absorption cell
- sulfur hexafluoride
- gas absorption
- gas
- pick
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- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 33
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 33
- 238000010521 absorption reaction Methods 0.000 claims abstract description 45
- 238000002347 injection Methods 0.000 claims abstract description 32
- 239000007924 injection Substances 0.000 claims abstract description 32
- 239000000523 sample Substances 0.000 claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000000243 solution Substances 0.000 claims description 21
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 4
- 239000012086 standard solution Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 238000004448 titration Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 51
- 238000001514 detection method Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model discloses a kind of sulfur hexafluoride gas acidity pick-up unit, comprise gas absorption cell and pH sensor, the signal probe of pH sensor is positioned at gas absorption cell, leakage fluid dram, air intake opening and multiple auto injection mouth is provided with bottom gas absorption cell, the top of gas absorption cell is provided with hand sampling mouth and exhausr port, and exhausr port is other installs a pressure transducer; Leakage fluid dram, air intake opening, auto injection mouth, hand sampling mouth and be provided with solenoid valve between exhausr port and gas absorption cell.These apparatus and method achieve the quick absorption of sulfur hexafluoride gas middle acid substance; Utilize pH sensor to realize instrumentation simultaneously, avoid pure naked eyes in titration process and judge terminal, significantly save test period, greatly improve test accuracy, safe operation and supervision further for inflating power equipment provide powerful guarantee.
Description
Technical field
The utility model relates to a kind of sulfur hexafluoride gas acidity pick-up unit; Belong to electric system detection technique field.
Background technology
Sulfur hexafluoride gas obtains scale application because of the electric insulation of its excellence and arc extinction performance on electrical equipment; sulfur hexafluoride production technology of the prior art can make inevitably to be mixed with acid and acidic materials in gas, on the security of electrical equipment with all there is very large impact serviceable life.Given this, sulfur hexafluoride gas acidity is the key index of industrial sulfur hexafluoride and sulfur hexafluoride gas quality control in running, traditional detection method uses conical flask ordinary-pressure absorption gas, need at least in triplicate to ensure to absorb completely, and the change of the color of titration end-point, for naked eyes sense organ judges, parallel experiment error is large; In order to the accuracy tested, generally also need repeatedly to carry out testing with averaged, process is numerous and diverse and spended time is many.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sulfur hexafluoride gas acidity pick-up unit, can realize detecting fast, accurately.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
First the utility model discloses a kind of sulfur hexafluoride gas acidity pick-up unit, comprise gas absorption cell and pH sensor, wherein, the signal probe of described pH sensor is positioned at gas absorption cell, leakage fluid dram, air intake opening and multiple auto injection mouth is provided with bottom described gas absorption cell, the top of described gas absorption cell is provided with hand sampling mouth and exhausr port, and described exhausr port is other installs a pressure transducer; Leakage fluid dram, air intake opening, auto injection mouth, hand sampling mouth and be provided with solenoid valve between exhausr port and gas absorption cell.
Preferably, These gases absorption cell is slim-lined construction and vertically arranges, and pH sensor side is stood on the sidewall of gas absorption cell.
More preferably, aforementioned pH sensor is horizontal by 60 ° of angles.
Particularly, aforementioned auto injection mouth comprises: pure water injection port, acid solution injection port and alkali lye injection port.
The sample introduction liquid of aforementioned acid solution injection port is the dilute sulfuric acid of 0.02mol/L, and the sample introduction liquid of described alkali lye injection port is the sodium hydroxide solution of 0.05mol/L.
The sample introduction liquid of previous manual injection port is standard solution, to calibrate pH sensor.
This more ripe pH value of solution detecting instrument of pH sensor is creatively applied in the detection of sulfur hexafluoride gas acidity by the utility model, overcome following technological difficulties: the effective absorption to gas be realized, the naoh concentration of absorbing liquid need at more than 0.001mol/L, pH value reach 11 and more than, under high ph-values like this, the limit value required even if sulfur hexafluoride gas acidic substance content is above standard, the pH that can cause changes very little, can not as calculating criterion reliably; And if pH value is transferred to change obvious region (pH is about 7.5), effectively cannot absorb gas middle acid substance again.The utility model then by first absorbing, regulating the method for pH, had both achieved the effective absorption to gas, had achieved again the accurate detection to sulfur hexafluoride gas acidity.
Usefulness of the present utility model is: (1), the sour gas adopted in the absorption cell absorption sulfur hexafluoride with pressure of slim-lined construction, vertically setting, increase gas solubleness in the solution and the contact area of gas and solution, make that absorption process is more tending towards completely, speed is faster; (2), to trace to the source pH measuring principle, in pH value close to time neutral, soda acid change causes the variation tendency of pH value obvious, design one group of contrast test, carry out the measurement of twice pH value, both ensured absorbing liquid alkali concentration, and made again pH value variation range drop on the obvious region of trend, and realized using pH sensor to the measurement of sulfur hexafluoride gas acidity.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of sulfur hexafluoride gas acidity pick-up unit of the present utility model.
The implication of Reference numeral in figure: 1, gas absorption cell, 2, pH sensor, 3, signal probe, 4, leakage fluid dram, 5, air intake opening, 6, hand sampling mouth, 7, exhausr port, 8, pressure transducer, 9, pure water injection port, 10, acid solution injection port, 11, alkali lye injection port, 12, solenoid valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the utility model.
See Fig. 1, sulfur hexafluoride gas acidity pick-up unit of the present utility model comprises gas absorption cell 1 and pH sensor 2, gas absorption cell 1 is slim-lined construction and vertically arranges with the assimilation effect optimized sulfur hexafluoride gas, pH sensor 2 is edge-on on the sidewall of gas absorption cell 1 and its signal probe 3 is positioned at gas absorption cell 1, preferably, pH sensor 2 is horizontal by 60 ° of angles.
Leakage fluid dram 4, air intake opening 5 and multiple auto injection mouth is provided with bottom gas absorption cell 1, top is provided with hand sampling mouth 6 and exhausr port 7, and at the other installation of exhausr port 7 one pressure transducer 8, realize the sour gas in absorption sulfur hexafluoride with pressure, increase gas solubleness in the solution and the contact area of gas and solution, make that absorption process is more tending towards completely, speed is faster.Wherein, multiple auto injection mouth comprises: pure water injection port 9, acid solution injection port 10 and alkali lye injection port 11, and pure water injection port 9, for adding pure water, can clean gas absorption cell 1; The sample introduction liquid of acid solution injection port 10 is the dilute sulfuric acid of 0.02mol/L, for the pH value of solution in adjustments of gas absorption cell 1; The sample introduction liquid of alkali lye injection port 11 is the sodium hydroxide solution of 0.05mol/L, as the absorbing liquid of sulfur hexafluoride gas middle acid substance; The sample introduction liquid of hand sampling mouth 6 is standard solution, to calibrate pH sensor 2.
Conveniently automation mechanized operation, at leakage fluid dram 4, air intake opening 5, three auto injection mouths, hand sampling mouth 6 and be provided with solenoid valve 12 between exhausr port 7 and gas absorption cell 1, amounting to quantity is 7.
In order to understand the utility model better, below to utilizing aforesaid pick-up unit to be introduced to the method detecting sulfur hexafluoride gas acidity, the method comprises the steps:
S1, calibration pH sensor 2: in gas absorption cell 1, add the known standard solution of pH value from hand sampling mouth 6, pH sensor 2 is calibrated, after calibration terminates, add pure water rinsing gas absorption cell 1 from pure water injection port 9, from leakage fluid dram 4 effluent discharge;
S2, adjustment pH value of solution: first in gas absorption cell 1, add sodium hydroxide solution, and then add dilution heat of sulfuric acid, accurately regulate the pH to 7.5 of solution, record uses the cumulative volume of dilution heat of sulfuric acid, mixed solution is discharged, pure water rinsing gas absorption cell 1, effluent discharge;
S3, acidity measurement: the sodium hydroxide solution adding same volume in step S2 in gas absorption cell 1, the sulfur hexafluoride gas of acidity to be detected is passed into from air intake opening 5, after the display of pressure transducer 8 numerical value reaches 0.3MPa, open exhausr port 7 to be vented, after absorption completes, add the dilution heat of sulfuric acid of same volume in step S2, measure the pH value of solution, according to the change of pH value, calculate sulfur hexafluoride gas acidity value;
S4, effluent discharge, pure water purge gas absorption cell 1.
To sum up, sulfur hexafluoride gas acidity pick-up unit of the present utility model, achieves the quick absorption of sulfur hexafluoride gas middle acid substance; Utilize pH sensor 2 to realize instrumentation simultaneously, avoid pure naked eyes in titration process and judge terminal, significantly save test period, greatly improve test accuracy, safe operation and supervision further for inflating power equipment provide powerful guarantee.
More than show and describe ultimate principle of the present utility model, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the utility model in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection domain of the present utility model.
Claims (6)
1. a sulfur hexafluoride gas acidity pick-up unit, it is characterized in that, comprise gas absorption cell and pH sensor, wherein, the signal probe of described pH sensor is positioned at gas absorption cell, be provided with leakage fluid dram, air intake opening and multiple auto injection mouth bottom described gas absorption cell, the top of described gas absorption cell is provided with hand sampling mouth and exhausr port, and described exhausr port is other installs a pressure transducer; Leakage fluid dram, air intake opening, auto injection mouth, hand sampling mouth and be provided with solenoid valve between exhausr port and gas absorption cell.
2. a kind of sulfur hexafluoride gas acidity pick-up unit according to claim 1, it is characterized in that, described gas absorption cell is slim-lined construction and vertically arranges, and pH sensor side is stood on the sidewall of gas absorption cell.
3. a kind of sulfur hexafluoride gas acidity pick-up unit according to claim 2, it is characterized in that, described pH sensor is horizontal by 60 ° of angles.
4. a kind of sulfur hexafluoride gas acidity pick-up unit according to claim 1, it is characterized in that, described auto injection mouth comprises: pure water injection port, acid solution injection port and alkali lye injection port.
5. a kind of sulfur hexafluoride gas acidity pick-up unit according to claim 4, is characterized in that, the sample introduction liquid of described acid solution injection port is the dilute sulfuric acid of 0.02mol/L, and the sample introduction liquid of described alkali lye injection port is the sodium hydroxide solution of 0.05mol/L.
6. a kind of sulfur hexafluoride gas acidity pick-up unit according to claim 1, is characterized in that, the sample introduction liquid of described hand sampling mouth is standard solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520245570.7U CN204613182U (en) | 2015-04-21 | 2015-04-21 | A kind of sulfur hexafluoride gas acidity pick-up unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520245570.7U CN204613182U (en) | 2015-04-21 | 2015-04-21 | A kind of sulfur hexafluoride gas acidity pick-up unit |
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| CN204613182U true CN204613182U (en) | 2015-09-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807963A (en) * | 2015-04-21 | 2015-07-29 | 国家电网公司 | Device and method for detecting acidity of sulfur hexafluoride gas |
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2015
- 2015-04-21 CN CN201520245570.7U patent/CN204613182U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807963A (en) * | 2015-04-21 | 2015-07-29 | 国家电网公司 | Device and method for detecting acidity of sulfur hexafluoride gas |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |