Ukusebenzisa kanye nokuhlola kwamavalvu ekubalulekeni kwezokufakwa kwendawo yokuthengisa

Ukusebenzisa kanye nokuthathwa kwamavalvu ekubambisweni kwendlela yokubhala kwezifundo.

Ngokulandelana kwamathuba okudala nokwenzeka kwezindlela zokudala kanye nokwenzeka kwesasazela sokwenza izinto, izivalo zokubalansisa ezithambile, izivalo zokubalansisa ezithambile, izivalo zokwenza okuhambisana, noma okungenzeka. Lolu hlelo olwenzelwe ngokwesibonelo lokuthatha isikhathi sokwenza izinto kanye nokuphatha kwemali yezifiso, kufanele kube nokwenza okuhambisana kwezivalo ezimbili, futhi kwenziwe izivalo ezimbili zokubalansisa okuhambisanayo kanye nokunikezwa kwamanye amaphutha.

Ukuxhumana ngesikhathi sokusetshenziswa kwesivale esiphilayo sokuqeqesha izinto ezithile kwiZulu

Izinga lokudala kwezinto zokubhukuda kwezamanzi

Umgaqo-wenziwe we-HVAC ozinikeza kahle kakhulu ukuthi konke okusetshenziselwa ekwenzeni izinto zonke zingasebenzi, konke abasebenzisi bangathola okuthiwa kudingekile, kodwa futhi ukwenza kube kahle kanye nokwenza kube yimpumelelo ekwenzeni, ukulungiselela ukuluma kwabasebenzisi mayelana namanzi nokuphazamiseka kwamanzi kanye nezinye izimo, kuphela umgaqo onjengalesi sicabangela ukuthi umgaqo wokulungisa umgaqo. Uma umgaqo akwazi lokhu kungase kwenziwe umgaqo ongalingani. Ngokuvamile, uma isimo esisodwa somgaqo, ukusetshenziswa kwabasebenzisi kwesikhala sokuphila kubalulekile kunokuthi isikhala sokudizayinwe, kubalulekile ukuthi isikhala sokuboniswa kwabasebenzisi kwenza kube kude kunokuthi isikhala sokudizayinwe esikhathini esizayo, kuzoba nokwenza kube kude kwesikhala sokudizayinwe kwamanye amabhulokhi, sithi isikhala sokudizayinwe kwamanzi kuleli qhinga kuyisikhala sokudizayinwe esiphakeme, isikhala sokudizayinwe esiphakeme kubalulekile kakhulu ngenxa yezokwenziwa kwezimfanelo zomgaqo noma ukwenza kwemisebenzi, isikhala sokudizayinwe esiphakeme kuyisimo esingakwazi kuzivikela.

Kunokho futhi isimo esikhona lapho inkampani yokusetshenziswa kwamathiphu yonke ematheminali yezisebenzisi kwiqembu liyisilinganiso noma liyalinganisa nesimo sokudizayina kweqembu. Lapho kwenziwe lokhu, isimo sokudizayina kungakwazi ukuthatha ukufaneleka kwesicelo somkhawulo, ngakho lokhu isimo kungenzela ukulahlekelwa kwesikhashana somsebenzisi, ngakho lokhu isimo ngeke isisize umkhankaso wendizayina. Ngokuvamile, sisebenzisa ifomula ΔP = SG2 ukuthuthukisa isiqondiso esikhona phakathi kwemifanekiso yezokwelapha ezahlukene zezinto zemvelo zomoya ekwakhiweni kwesimo sethebhulethi sethebhulethi (Δp kungenzeka ukuthuthukisa, S kungenzeka ukuthuthukisa kwesimo sethebhulethi, G kungenzeka ukuthuthukisa).

Ezweni akukho kwenziwe phakathi kwesicelo sevalvu ye-balancing ye-hydraulic, kuyaphuma ukuthi izinto ezifana ne-globe valves noma butterfly valves zisebenzisa ukubeka isistimu se-hydraulic esiphilile. Ngoba lezi zivalvu zinamathuba okuthiwa zingcono, zokwenza, ezithokozisayo futhi zingcono kakhulu ezweni zisebenzisa.

Designers in a clear design on the basis of selection, in the system for full-load conditions should be the end of all the temperature-controlled electric valve open, and will be one to three of the end of the flow designed for 33m3 / h. Its valves are kept 100% open, then the actual flow of the end of the first 39m3 / h; two 35m3 / h; three 31m3 / h, when the pump working point parameters head About 19m, the flow rate of about 105m3 / h, so that the system has a hydraulic imbalance phenomenon.

Izinga elilodwa kuyoba ukuthi kungatholakala ukulungisa isistimu ngokulungiselela ukuvulela kwezivali zesekhondeni esibili nesithathu, okuyinto: isivalo sokulungisa sokupheka sokwakha esihlanzekile ukuze kwenzeke 40kPa; isivalo sokupheka sokwakha esibili ukuze kwenzeke 20kPa, ukuze kwenzeke ukuthi amaqembu angaphansi kwezindlela ezintathu zezikhumulo zesivalo sokupheka zihlale kwi-80kPa, futhi ngokuthi kufanele kube kanye nezimpendulo zokwenza okwenziweyo zokufaka 33m3 / h, isihlangu sokuqala kwi-20m, isihlangu sokufaka kwi-100m3 / h, ukuze kube khona ukulungisa okuthuthukile kwezindawo. Ngakho, asikwazi ukulungisa konke izivali zesekhondeni ukuze sikhuliselele ukulungisa okuthuthukile kwezindlela, ngakho asikwazi ukulungisa konke izivali zesekhondeni ukuze sikhuliselele ukulungisa okuthuthukile kwezindlela, okuyinto kusho, isivalo sokulungisa okuthuthukile asikho isimo esihlela esikhulayo ukuze sikhuliselele leli gama lokufakwa.

In the current situation, the vast majority of HVAC hydronic system design is only for the end of the branch for the design of the flow rate of the label, basically will not pay attention to the end of the differential pressure value of the relevant standards and requirements, in the specific operation process, some need to manually complete the balance of the adjustment basically rely on the design, construction, and operation and maintenance personnel to complete the experience of the system belongs to a kind of theoretical support for the system adjustment method. It belongs to a system adjustment method without theoretical support. But from the actual effect, this kind of regulation method without theoretical support does bring some effect for the system of hydraulic disorders.

1.2 Static hydraulic balance valve - ivalvu ye-balansi yehayidrolikhi esiswini Hydraulic balance - ukubalansela kwehayidrolikhi

Izindlela zokulawula zokulawula ezithambile zihlukile kakhulu, kodwa isivalo sokuqala sebalansi yehayidrolikhi kuyinto isivumelwano esiningi esimanje, isivalo sokuqala sebalansi liye lisebenze ngokwanele, "ngokwesibonelo, uma i-data yezokuhlola ikhethwe ukuthi, uma Δp ikhona ngendlela eyodwa, kanye isivalo sokuqala sebalansi yehayidrolikhi akufanele kube nezinkinga ezibalulekile zokulawula, ngakho-ke ngemizamo yezomnotho ezikhona manje, ukusebenzisa izivalo sokuqala sebalansi yehayidrolikhi ngaphandle kwesivumelwano esikhathini esizayo kuyinto engalungile.

In the current static hydraulic balancing valve market circulation of balancing valve products with flow measurement, valve opening screen, pre-flow, emptying and other functions. The use of static hydraulic balancing valves can be measured in a timely manner through a specific instrument on the flow, but also can play the role of the switch. Once the balancing valve is completed after commissioning, we can not open the valve to change by will. This is mainly in view of the later maintenance problems, we have the valve body spindle sealing treatment. Work such as measurements do not need to run in the case of interruption of the system, can be done on site, and does not need to destroy the overall insulation of the system can be realized. However, from the point of view of its cost-effectiveness, its price relative to the same flow rate of centrifugal pumps do not have an advantage, while in the current domestic market static hydraulic balancing valve there are still some problems. For incompressible fluids, static hydraulic balancing valve can be used as a local resistance adjustment of the throttle component.

I-Static hydraulic balancing valve ingasetshenziswa ukuthi ibalansise i-resistance yokufuthela kwesikhala ngokuthi ibalansise i-valve, izinkomba zivaliwe zingase zibe i-KV value, futhi izinkomba ezahlukene zika-KV value zivame kwezinye, ngakho-ke kufanele sibone i-Δp ekupheleni ukuthola i-Q value yakho. Ukuze kube lula ekukhokhelweni, kufanele sisetshenziswe i-hole ye-test ye-pressure eshasiwe ngokuthi izinkomba ezimbili zika-Static hydraulic balancing valve, leli qembu lihambisana nge-throttle. Uma sisebenzisa umsebenzi wokwenza izinto zomsebenzi, sisetshenziswa i-equipment ye-commissioning ye-hydraulic balancing evulekileyo eyinhloko yamanufacturer ukuze sizame i-Δp value, futhi siphinde sisetshenzise i-software evulekile ukuze sifake i-KV value ekwenzweni, ukuze sikhokhe i-Q value esakhiweni. Ngalesi sikhathi, i-Δp njengoba i-value yokukhokha; i-KV njengoba i-value esetshenziswe, uma ikwazi i-ΔP = 0.1MPa; i-Q iyindlela yokukhokha esakhiwe, izici ezivamile ezivamileyo zokwenza ukukhokha kwakhe kubalulekile kakhulu kusukela ekuthuthukiseni kwesikhala esivale njengoba kanye nesimiso sokuphambene kwesikhala esivale.

Kwakudingeka kwenzeke inqubo ekufanele kwenziwe ukuthi sisebenzise i-valve ye-balance ukushintsha i-imbalance yehayidrolikhi ekwenzekile kanye nezidingo zokuhlanganisa "ngaphambi kokwenza i-mechanism ye-operation ye-valve ye-balance ye-hayidrolikhi eshisa sikhuluma ukuthi i-valve ye-balance ye-hayidrolikhi eshisa, kodwa emva kokugcina, i-fluctuations ye-Δp ekwakhiweni kwezinye izinto zokuphuzisa ziyakwenzela ukukhula kwamanzi, ekwakhiweni kwe-valve kuzosiza ekwenzeni ukuthi kubonakale ukushintsha kwesimo sokuphuzisa.

Kwesokudla okwamanje, izinkampani eziningi zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zezinto zez

Noma kube kube i-balance valve inezinto zokwenza isethiwe, emva kokufaka isistimu somanzi, kudinga ukulawula konke izivalo ukuze kwenzeke ukuthi i-q value yomthwalo we-valve we-balancing valve isebenze ngokwengqondo, ukuze kwenzeke ukuthi inethiwekhi yepayipi ikwazi ukwenza ngendlela yemigaqo yemisebenzi yomthwalo. Ngalesi sikhathi, i-static water balancing valve isekhokhelwe ekuboniseni isimo sokuvulela, futhi ekuphathweni akukwazi ukusetshenziswa ekuboniseni isimo sokuvulela esimoyeni. Ngokwesibonelo, kufanele sifake isicelo esihlobene nezidingo ezithunyelwe ezifakwe kwiifayela zokwenza izinto zomsebenzi, ukuze kwenzeke kube lula ukuthi kwenziwe umsebenzi wokulawula okulandelayo.

In addition, due to different equipment suppliers to provide the computer software KV value is not uniform, resulting in different suppliers to provide products supporting the commissioning instrumentation can not be realized interoperability. In static hydraulic balancing valves, all static hydraulic balancing valves are set up with a cavity behind their hair plugs, and this cavity becomes the main retention point for dirt during online operation.

2 Ivalvu yokubeka okuhambisana ngesimo yakho

2.1 Ikhontrola yokuphatha okwenzayo yezinto ezisebenza ngokwenzeka eyenzayo

Izinkomba zokuphatha okwenzayo zokuphatha okwenzayo kuyinto isiphetho esisha sokuphatha okwenzayo ekuthuthukiseni, izinkomba zokuphatha okwenzayo kufana nezinkomba zokuphatha ezithuthukisiwe kakhulu ngenkathi kufanele kube lula ukwenza ukuphatha okwenzayo okwenziwe ngokuzenzakalelayo, ngaphandle kokudinga amandla angaphandle kwenziwe. Ekusebenziseni okwenziwe ngaphakathi kwezinto esikhathini esizayo kufuneka ukuthi lesi sikhungo sokuphatha okwenzayo sikhanyeze ukwenza ukubambisana kwesikhungo, ukubaluleka okuhambisana, ukuze kube lula ukwenza izinto zesikhungo. Ngaphambi kokuthola lokhu, izinkomba zokuphatha okwenzayo ezikhishwe kwi projekthi yokuphefumula nokuhlala kwamanzi zimele abaningi abasebenzisi. Isinkomba sokuphatha okwenzayo isebenzisa isakhiwo esilishumi, elilungiselela isinkomba sokuphatha okwenzayo esilishumi, ziyisiza ekulungiseni isinkomba sokuphatha okwenzayo.

In the manual control valve, KVS is the flow coefficient of the manual control valve port, and P2-P3 is the pressure difference coefficient between the two sides of the manual control valve port. the size of the KVS is closely related to the degree of openness, openness is unchanged, the KVS is a variable, if the P2-P3 is unchanged, the C does not change. the P2-P3 is kept unchanged depends mainly on the balancing valve. For example, the import and export pressure difference Pl-P3 becomes larger, the use of dynamic pressure film and spring force prompted the balance switch automatically adjusts the small, P1-P2 will become larger, to maintain P2-P3 unchanged, so the formation of a fixed; on the contrary, P1-P3 becomes smaller, the balance switch automatically adjusts the large, P1-P2 will become smaller, to maintain P2-P3 unchanged, so as to complete the fixation of the “manual switch regulating group of the angle at which each valve open Size of each valve of the manual switch regulator group has a corresponding flow rate, the relationship between the angle of each valve open and the flow rate by the test bench to show the experimental standard decision, but also has the corresponding openness of the display and locking equipment.

2.2 Isitshalo sokuphatha okwenziwe ngumuntu kwi imfashini yokwenza amanzi kwi isistimu sokwenza amanzi

Self-operated flow control valves do not need to rely on external power but rely on their own media pressure difference to achieve control, self-operated flow control valves are equipped with automatic flow control components, the components can realize the flow equilibrium, through this function from the fundamental solution to the problem of hydraulic imbalance. Self-operated flow control valves are very simple to install and easy to adjust, the use of the process of consuming less energy, which increases the heating area can reach between 25% -30%, greatly improving the stability of its operation, to ensure the quality of heating. When we carry out the transformation of the water mixing system, first of all, the hydraulic calculation, the heating area, the ring flow to and the corresponding heating pipe diameter and other factors to analyze, according to these data information to select the appropriate flow control valve, according to the temperature to regulate the size of the flow, and then with the help of self-operated flow control valves with a unique function to achieve stability of the mixing of the water pressure, flow, and temperature, which fully ensures that the water mixing station This can fully ensure that the mixing station can obtain a relatively stable flow between the system to ensure the balance of the operation.