Izifo ezithile zegati valve kanye nezindlela zokulungiswa

Gate valve common failures and preventive measures

I-Gate valve iyindlela ekhethwe yokwenza isakhiwo somhlaba (igesi) wezindlu zomnotho, izinkomba eziningi zegate valve ezisebenzisayo zikhona izifo ezithile ezilula.

Izindlela zokupheka kwesango nezindlela zokupheka kwesango zokupheka.

Kusukela ekhaya, kumele sibheke ukuthi izinkomba zegeti nezinkomba zegati zimele, uma zingekamelelwa, isicelo sokuphendula kanye nokugcina kwesigaxa sokuqinisa kanye nokugcina kwesigaxa sokuphendula kungase kube nokwenzeka ukuphela. Izinkomba kanye nenkathi kumele zibhekwe ngokwesibonelo, futhi konke izinkomba kumele zikamelelwe kungase kube nokwenzeka ukuphela kwesigaxa. Futhi, kumele kube khona ukubhekwa kwesayizi kanye nokuphambene kwesigaxa sokuphendula kanye nenkathi. Uma ubukhulu bokuphendula kwesigaxa bokuphendula akuyona okuncane noma okuncane kakhulu, kumele isicelo sokuphendula noma sokushintsha isigaxa. Ngaphezu kwalokho, bhekisa isigaxa sokuphendula kanye nenkathi yokuphendula uma kukhona ukuphela, izimpawu zomhlaba, izimpawu zomhlaba noma izinto ezinzima, uma kukhona izinto ezinhlelweni, kumele kube nokwenza isicelo sokuphendula esihambisana, ukuphepha noma ukucacisa.

Ukuvuza kwesicoco sokukhanya

I-Bonnet leakage, leli phephenomenon yemvamisa iyatholakala kakhulu ekuboniseni ukuvuvukala kwepaki. Ngokwesibonelo, hlanganisa uma isilawuli sivikelwe kanjani, uma kunezinto ezifana nesigqoko sokuvikela, uma kukhona leli cala, hlanganisa isilawuli noma qiniseka isigqoko sokuvikela. Ngokwesibili, hlanganisa uma izilawuli zinezingalo, izikhala, izigqoko ezivulekile kanye nezinye izinto, leli sikhathi kufanele uqiniseke ukuthi uzilawuli. Futhi, hlanganisa uma isigqoko sokuvikela sokugcina kuhamba kahle noma kunezinto ezinye ezivamile, uma kunezinto ezivamile, khona ke uthathe izinto ezivamile noma uthumele izinto ezivamile.

Bonnet or bracket inside the packing through the compression to seal, should check the installation of these fillers, if the upper and lower filler installation is found to be reversed, it is necessary to remove, in accordance with the correct method of re-installation, especially pay attention to the filler seals with the surface of the seal with. Furthermore, check whether the precision of each contact surface of the seal meets the specified requirements.

3. Valve body cavity decent leakage

Isikhala somzimba we-Valve ngesikhathi sokwenza isitsha, kubalulekile ukuthi kubonakale izikhala zesondo, izikhala zesondo kanye nezinye izinto ezithakazelisayo zokwenza isitsha ezikhethekile kakhulu ukuthola. Uma kungenzeka lokhu, kudinga ukuthi kwenzeke isicelo sokwenza isicelo, ukwenza okuncane noma ukwenza okusha.

Izindlela zokuhlanza kwesitayela sevalvu sevalvu.

Izindlela zokuhlanza kwezinkomba zokuhlanza kwezinkomba, ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni 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okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzeni okanye ekwenzen

First of all, you should check the valve seat and valve plate contact sealing surface accuracy, this sealing surface should be at least grinding, such as found that the surface accuracy is too rough, it should be removed to re-grind. Secondly, the sealing surface should be checked to see if there are defects such as pitting, indentation, sand eyes, cracks, etc. If this happens, the valve plate or seat should be replaced. For the valve seat with pressure spring, the elasticity of the pressure spring should be checked to meet the requirements, and if the elasticity is weakened, the pressure spring should be renewed. Furthermore, check whether the valve plate and valve stem T-shaped joint is too loose, resulting in the valve plate in the process of compression of the tilt of the situation, in this case, the valve plate should be removed and adjusted to the optimal size.

I-Valve body internal open file, ekuphathweni kwezimboni kuyisimahla ukungena kwemithambo, amathuluzi, izimpawu kanye nezinye izinto ezithile, kufanele kucishwe ngaphambi kokufaka izinto ezithile ezifana nalesi. Uma uthenga ukucisha noma ukucisha akuyona okufanele, kuzosiza ukuthi isihluthu sibophelele ekupheleni okuthandwayo futhi sikhuleke, ngalesi sikhathi, i-Valve body kufanele isuswe ukuze kucishwe.

Ukufaka isitshi sevalvu kumele kufakwe ngesandla esuselwe, kufanele kube nokuchaza uma isitshi sevalvu sikufakwe ekwenzeni, uma izithako zifakwe kancane kunokuba kufanele, isitshi sevalvu sizoba nezinto zokuhamba phansi, leli sitshwala kufanele lithunyelwe ngesandla esuselwe yokufaka isitshi sevalvu.

Izinkomba zokugeza azikwazi ukugoba ngokuzithokozisa

(1) Isici esihlukile. (1) Ivalve stem bending and twisting. ② Isikhala esiphezulu akukho. ③ Ukusebenza kakhulu kakhulu ukwenza i-thread isebenze. Ukulahlekelwa okulungile noma ukulahlekelwa kwesikhwama. ⑤ Stem nut tilt. ⑥ Ukulingana kwesimiso akukwazi, ukubhatala okuphezulu. (7) Ukulahlekelwa kokulondoloza kwamanzi, i-thread yestem ikhombisa idaka nesondo, noma iyarustwa ngamanzi, umfula nesikhukhula. (8) Ukulondoloza kwethread ngamanzi (kukhombisa i-dark stem gate valve noma i-stem nut ekunene kwengqondo yegate valve). ⑨ Ukukhetha okungaphandle kwemithombo, njengoba i-valve stem kanye nesithem nut ngezinto ezithile, kuyaphilisa.

(2) Preventive measures and solutions. ① To strictly control the force of the proportion, not hard twisting (refers to the handwheel and valve stem directly coupled gate valve). ② Improve the processing quality to meet the specification requirements. ③ careful operation, do not make a hard closing, do not open to the upper dead center, to the stop point should be the handwheel inverted one or two turns, so that the upper side of the threads close, so as to avoid the medium to promote the upward impact of the valve stem. ④Check the lubrication condition frequently and keep normal lubrication condition. ⑤ Square or correct the valve stem nut. ⑥Correct or update the stem nut to meet the standard specification. ⑦ often clean up the stem nut dust sand, to prevent corrosion. (8) open gate valve to add a protective sleeve of the valve stem. Valve stem nut using copper material is better, do not use the same material with the valve stem.