Muhimman abubuwa don aiki na bayanin kasa na SF6 na gurbin shugaban jirgin sama

Bayanin Yadda Ake Gano Gas SF6 a Tsakiyar

Dubu

Ake gano gas SF6 don hasashen cewa ba da kasa na gas a tsakiyar jami'ar yanki na Gas-Insulated Switchgear (GIS). Ana iya samun kasa sabon abubuwa masu kyau kamar hanyoyi na alama, yadda ake shirya, yadda ake amfani da alama, kisan alama, ko kuma yadda ake amfani da malamai da zuba. Ana iya samun kasa sabon tushen bayan yadda ake shirya, ko kuma karfin shirya, da kuma yadda ake amfani da malamai da zuba.

Fadada

• Tsari: Ba a tabbas da gano kasa a kan janar-janar da suka shirya a makaranta, domin an yi gano a makaranta a kan kasa.

• Mahimmanci: Babu mahimmanci a nan illallace a matsayin yanayi a kan samun kasa a lokacin da ake shirya, a kan samun ingantaccen kasa, ko a kan samun ingantaccen kasa a tsakiya. Idan ana iya bukatar babbar wani yanayi a kan shirya, ya kamata a yi gano kasa.

Takardun Gano

1. A Baka GIS Da Gas SF6

• Idan an shirya GIS, baka da gas SF6 ko mixturin gas da ake magana a kan sashe na mai amfani da ita, kamar yadda ake bayyana a kan nameplate.

• Amfani da detektarin kasa ta gas portable don hasashen cewa ba da kasa. Ana rarrabe detektarin da ke bayyana tasiri na kasa da darajarun kasa, amma akwai kula-kula da ake amfani da ita don hasashen mafi yawan kasa.

2. Binciken Tukuna Tsakiya

• Dubu: Yi binciken tukuna tsakiya kabisa ga baka da gas SF6 don hasashen kasa daban-daban a tsakiyar jami'ar yanki. Wannan bincike ba za a iya hasashen kasa idan an sake shirya gas.

• Takarda:

• Yara kusan tukuna tsakiya a kan janar-janar bayan a kawo pumpin tukuna tsakiya, amma kafin a baka da gas (da amfani da gauge).

• Mai amfani da ita za bayyana darajarun tukuna tsakiya da za a iya kusa da wani lama.

• Idan an samu tukuna tsakiya mai yawa, hashe cewa akwai kasa.

• Karamin Hasashi: Abubuwa kamar kasa daga gauge, kasa daga wuraren tukuna tsakiya, da kuma tukuna tsakiya saboda mutanen ji da ke kan janar-janar (da zai fito daga materialon epoxy) suna iya haɗa da ra'ayin kasa. Tuntuɓi da mai amfani da ita game da takardin tukuna tsakiya da kuma amfani da kowane bayanin da suka bayyana.

3. Gano Kasa Ta Gas SF6

• Zaman: Yi gano kasa ta gas SF6 karshe bayan a baka da GIS a sashe na mai amfani da ita.

• Janar-janar Don Gano: Gano kasa a kan jami'ar yanki, jami'ar yanki, wasu wurare da suka shirya, gas valves, da kuma gas piping.

• Gano Jami'ar Yanki: Don kasa daban-daban, yana da kyau a amfani da gano jami'ar yanki. A wannan hanyoyin, ana shiga jami'ar yanki a kan wani lama, sannan ana shiga detektarin kasa a kan jami'ar yanki don hasashen gas SF6. Wannan taimaka a hasashen kasa daban-daban da za a iya fito daga gano kasa.

4. Hanyoyin Bagging

• Dubu: Don hakkin gas SF6 da kuma ƙarin bayanin kasa.

• Takarda:

• Bagga jami'ar yanki da plastic sheeting (tuntuɓi da Figure 1 don hanyoyin).

• Hashe cewa bagga yake ƙara don kudan airi daga kan ƙarfafa.

• Zuba cap ko cover a filling valves don kudan gas na ƙarfafa.

• Gano: Bayan 12 sa'atu, yi gano kasa a kan kowane joint. Zuba incision a kan bagga saboda kowane joint (kamar yadda ake nuna a Figure 1).

5. Hasashen Ƙarin

• Idan an hashe cewa akwai kasa, yi ƙarin gano kasa a kan tsakiyar jami'ar yanki da kuma jami'ar yanki da suka shirya a makaranta.

Amfani Da Detektarin Gas SF6 Handheld Don Gano Kasa

Takarda Don Shiga Nozzle Na Detektar

1. Shiga a Bagga:

• Shiga nozzle na handheld SF6 gas detector kafin a incision na plastic bag, hashe cewa yake shiga ƙasar bagga.

• Wannan hanyoyin taimaka a hasashen gas SF6 da ke fito a bagga.

2. Tuntuɓi Da Bayanai Mai Amfani Da Ita:

• Akwai kyau a tuntuɓi da bayanai mai amfani da ita game da darajarun kasa da za a iya kusa don wuraren gano da ake amfani da ita.

• Rara darajarun kasa (a ppmv) ko pass/fail results a kan kowane jami'ar yanki a kan GIS.

3. Hasashen Kasa:

• Idan an hashe cewa akwai kasa, kara detektar daga wani jami'ar yanki, sake kalibra, sannan ka shiga jami'ar yanki don hasashen kasa.

• Wannan hanyoyin taimaka a hasashen kasa da ƙarin bayani.

4. Bayanin Ƙarin:

• Idan an hashe cewa akwai kasa, yi ƙarin bayanin don hasashen mafi girman kasa.

Zabin Don Hasashen Mafi Girman Kasa

1. Liquid Leak Detection Solution Ko Soap Water:

• Takarda: Kasa baggin, sannan amfani da liquid leak detection solution ko soap water a kan jami'ar yanki da aka hasasha cewa akwai kasa.

• Note: Wannan hanyoyin ba da ƙarin bayani kamar amfani da detektarin gas, amma zai taimaka a hasashen mafi girman kasa.

2. Handheld Leakage Detector Re-Check:

• Takarda: Kasa baggin, sannan amfani da handheld leakage detector don hasashen kasa a kan jami'ar yanki da aka hasasha cewa akwai kasa.

• Rate of Movement: Yara rate da ake shiga detektar a kan jami'ar yanki kamar yadda ake bayyana a kan bayanai mai amfani da ita.

3. Infrared Camera:

• Takarda: Bayan bag test, amfani da infrared camera don hasashen kasa. Wannan hanyoyin taimaka a hasashen kasa da sukar da suka fito daga hanyoyin.

• Advantage: Infrared cameras zai bayyana mafi girman kasa bila ƙarin bayani.

4. Isolation with Segmented Bags:

• Takarda: Sake yi gano kasa da amfani da segmented bags don hasashen mafi girman kasa. Wannan hanyoyin taimaka a hasashen kasa bila ƙarin bayani.

• Benefit: Wannan hanyoyin taimaka a hasashen mafi girman kasa bila ƙarin bayani.

Takarda Don Gyara Kasa

1. Hasashen Da Rara Kasa:

• Idan an hashe cewa akwai kasa, rara mafi girman kasa.

2. Tsarin Gyara:

• Recovery of SF6: Recovery the SF6 gas from the affected chamber to prevent environmental contamination.

• Disassembly: Carefully disassemble the GIS to access the leak site.

• Identify the Cause: Determine the root cause of the leak, such as damaged seals, improper assembly, or contamination.

• Cleaning and Replacement: Clean the affected area and replace any damaged components or seals. In some cases, the customer and manufacturer may agree to use permanent sealing devices, clamps, or patches to address the issue.

3. Reassembly and Testing:

• After repairs are completed, reassemble the GIS.

• Vacuum and Refill: Draw a vacuum on the chamber and refill it with SF6 gas to the manufacturer’s recommended temperature-compensated pressure.

• Final Leak Test: Conduct a final leak test to ensure that the repair was successful and no new leaks have developed.

An za a sake yi gano kasa.

Idan an samu kasa a kan wuraren, za a iya haɗa da takarda.

Wasu chemicals da ake amfani da su a kan shirya da kuma sealing GIS, kamar alcohol da silicone sealant, suna iya haɗa da takarda a kan detektarin kasa, saboda haka za a iya samu ra'ayi ƙoƙari.

Dust, cobwebs, water, da wasu abubuwa suna iya haɗa da ra'ayi ƙoƙari.

Kafin a yi gano kasa, hashe cewa jami'ar yanki da ake gano yake ɗaya da kuma ƙara.

Idan akwai condition-based monitoring/gas trending system a kan GIS, ya kamata a tuntuɓi cewa sensors take some time to normalize, and therefore may not be effective in providing a true indication of gas leaks immediately after filling the equipment.