I-TWS Backflow Preventer

Umgaqo wokuSebenza we-Backflow Preventer

TWS backflow preventersisixhobo somatshini esenzelwe ukunqanda ukujikeleza kwamanzi angcolisekileyo okanye enye imidiya kwisistim sonikezelo lwamanzi aselwayo okanye inkqubo yolwelo olucocekileyo, eqinisekisa ukhuseleko kunye nokucoceka kwenkqubo yokuqala. Umgaqo wayo wokusebenza uxhomekeke ikakhulu kwindibaniselwano yekhangela iivalve, iindlela zokwahluka koxinzelelo, kwaye ngamanye amaxesha iivalvu zokunceda ukwenza "umqobo" ngokuchasene nokubuyela umva. Nalu ucazululo oluneenkcukacha:

IValve yokuHlola kabiniInkqubo
Uninziabathinteli bokubuyela umvabandakanya iivalvu ezimbini zokujonga ezisebenza ngokuzimeleyo ezifakwe kuthotho. Ivalve yokuqala yokukhangela (inletkhangela ivalve) ivumela i-fluid ukuba iqhube phambili kwinkqubo phantsi kweemeko eziqhelekileyo kodwa ivale ngokuqinileyo ukuba i-backpressure iyenzeka, ikhusela ukubuyisela umva ukusuka kwicala elisezantsi. Umzuzwanakhangela ivalve(indawo yokuphumakhangela ivalve) isebenza njengomqobo wesibini: ukuba owokuqalakhangela ivalveayiphumelelanga, eyesibini iyasebenza ukuvala nakuphi na ukubuya umva okuseleyo, inika umaleko ongafunekiyo wokhuseleko.

Ukujongwa koMdaniso woxinzelelo
Phakathi kwezi zibinikhangela iivalve, kukho igumbi lokwahlukana koxinzelelo (okanye indawo ephakathi). Ngaphantsi kokusebenza okuqhelekileyo, uxinzelelo lwecala lokungena (phezulu kwi-valve yokuqala yokutshekisha) luphezulu kunoxinzelelo kwindawo ephakathi, kwaye uxinzelelo kwindawo ephakathi luphezulu kunecala lokuphuma (ezantsi komlambo wesibini.khangela ivalve). Le gradient yoxinzelelo iqinisekisa ukuba zombini iivalve zokutshekisha zihlala zivulekile, zivumela ukuhamba phambili.

Ukuba i-backflow isondele (umzekelo, ngenxa yokuhla ngokukhawuleza koxinzelelo oluphezulu okanye ukunyuka koxinzelelo lwe-downstream), ibhalansi yoxinzelelo iyaphazamiseka. Ivalve yokuqala yokujonga ivala ukuthintela ukuphuma ngasemva ukusuka kwindawo ephakathi ukuya kwindawo yokungena. Ukuba ivalve yesibini yokukhangela iphinda ibone uxinzelelo olubuyela umva, ivala ukuvala umva ukusuka kwicala lokuphuma ukuya kwindawo ephakathi.

Ukuvuselelwa kweValve yokuNceda
Uninzi lwabathinteli be-backflow baxhotyiswe ngevalve yokunceda eqhagamshelwe kwindawo ephakathi. Ukuba zombini iivalvu zokutshekisha zisilela okanye ukuba uxinzelelo kwindawo ephakathi ludlula uxinzelelo lokungena (olubonisa umngcipheko wokubuyela umva), ivalve yokukhulula ivula ukukhupha ulwelo olungcolisekileyo kwindawo ephakathi kwi-atmosfera (okanye inkqubo yokuhambisa amanzi). Oku kuthintela ulwelo olungcolileyo ekutyhaleni umva kunikezelo lwamanzi acocekileyo, lugcine ingqibelelo yenkqubo yokuqala.

Ukusebenza okuzenzekelayo
Yonke le nkqubo iyazenzekela, ayifuni kungenelela ngesandla. Isixhobo siphendula ngokuguquguqukayo kwiinguqu zoxinzelelo lwe-fluid kunye ne-flow direction, ukuqinisekisa ukukhuselwa ngokuqhubekayo malunga nokubuyela umva phantsi kweemeko zokusebenza ezahlukeneyo.

Izinto eziluncedo kwi-Backflow Preventers

Izithinteli zokubuyela umvaidlala indima ebalulekileyo ekukhuseleni iinkqubo zolwelo, ingakumbi amanzi aselwayo, ngokuthintela ukubuya umva kwemithombo yeendaba engcolisekileyo okanye engafunekiyo. Iinzuzo zabo eziphambili ziquka:

1. **Ukukhuselwa koMgangatho waManzi**

Olona ncedo luphambili kukuthintela ukungcoliseka phakathi kweenkqubo zamanzi aselwayo kunye nemithombo engaselwayo (umz., amanzi amdaka avela kwimizi-mveliso, amanzi okunkcenkceshela, okanye ugutyulo). Oku kuqinisekisa ukuba amanzi okusela okanye ulwelo lwenkqubo ecocekileyo luhlala lungonakaliswa, lunciphisa imingcipheko yempilo enxulumene nokusetyenziswa kwamanzi angcolileyo.

2. **Ukuthotyelwa kweMimiselo**

Kwiindawo ezininzi, abathinteli be-backflow bagunyaziswa ngeekhowudi zemibhobho kunye nemimiselo yezempilo (njengaleyo imiselwe yimibutho efana ne-EPA okanye iziphathamandla zamanzi zendawo). Ukuzifakela kunceda izibonelelo kunye neenkqubo ukuhlangabezana neemfuno zomthetho, ukuphepha izohlwayo okanye ukuvalwa kokusebenza.

3. **Ukungafuneki kunye nokuthembeka**

Uninziabathinteli bokubuyela umvaifaka iivalvu ezimbini zokujonga kunye nevalve yokukhulula, idala inkqubo yokhuseleko engafunekiyo. Ukuba icandelo elinye liyasilela, abanye basebenza njenge-backups, ukunciphisa umngcipheko wokubuyela umva. Olu luyilo luqinisekisa ukusebenza okuhambelanayo naphantsi koxinzelelo oluguquguqukayo okanye iimeko zokuhamba.

4. **Ukuguquguquka kuzo zonke ii-Aplikheshini **

Baziqhelanisa neemeko ezahlukeneyo, kuquka iindawo zokuhlala, zorhwebo, zoshishino kunye neenkqubo zikamasipala. Ingaba isetyenziswe kwiinethiwekhi zemibhobho, iinkqubo zokunkcenkceshela, okanye imigca yenkqubo yoshishino, abathinteli be-backflow bathintela ngokufanelekileyo ukubuyisela umva kungakhathaliseki uhlobo lwamanzi (amanzi, iikhemikhali, njl.) okanye ubungakanani benkqubo.

5. **Ukunciphisa ukonakala kweZixhobo**

Ngokumisa ukubuyisela umva, abathinteli be-backflow bakhusela iimpompo, iibhoyili, izifudumezi zamanzi, kunye nezinye izinto zenkqubo kumonakalo obangelwa yi-backpressure okanye isando samanzi (ukunyuka koxinzelelo ngokukhawuleza). Oku kwandisa ixesha lokuphila kwezixhobo kunye nokunciphisa iindleko zokulondoloza.

6. **Ukusebenza okuzenzekelayo**

Izithinteli zokubuyela umvaumsebenzi ngaphandle kokungenelela ngesandla, ukuphendula ngokukhawuleza kwiinguqu zoxinzelelo okanye ukuguqulwa kokuhamba. Oku kuqinisekisa ukhuseleko oluqhubekayo ngaphandle kokuxhomekeka ekubekweni iliso komntu, okwenza ukuba bafaneleke kwiinkqubo ezingabonakaliyo okanye ezikude.

7. **Ukuphumelela kweendleko**

Ngelixa iindleko zofakelo lokuqala zikhona, ugcino lwexesha elide lubalulekile. Banciphisa iindleko ezinxulumene nokucocwa kongcoliseko lwamanzi, ukulungiswa kwezixhobo, izohlwayo ezilawulayo, kunye netyala elinokubakho kwiziganeko zempilo ezinxulumene namanzi angcolisekileyo. Ngokwenyani, abathinteli bokubuyela umva bayimfuneko ekugcineni ingqibelelo yenkqubo, impilo yoluntu, kunye nokusebenza kakuhle kuluhlu olubanzi lwezicelo ezisekwe kulwelo.