Valve dah hma hian valve chakna test leh valve sealing test chu valve hydraulic test bench-ah tih tur a ni. Low-pressure valve 20% chu random-a enfiah tur a ni a, 100% chu a tling lo a nih chuan enfiah tur a ni; Medium leh high-pressure valve 100% enfiah tur a ni. Valve pressure test na atana hman tlanglawn tak chu tui, oil, boruak, steam, nitrogen, etc. Pneumatic valve telin industrial valve te pressure test dan chu hetiang hi a ni:
Butterfly valve pressure test dan a ni
Pneumatic butterfly valve chakna test hi globe valve nen a inang reng a ni. Butterfly valve sealing performance test-ah chuan test medium chu medium flow end atanga luhtir tur a ni a, butterfly plate chu hawn tur a ni a, a tawp dang kha khar tur a ni a, injection pressure chu a value tarlan a thleng tur a ni packing leh seal dangteah leakage a awm loh enfiah hnuah butterfly plate chu khar la, a tawp dang hawng la, butterfly valve chu enfiah rawh. Plate seal-a leakage awm lo chu qualified a ni. Flow regulate nana hman butterfly valve hi sealing performance test a ni lo mai thei.
Pressure test dan hmanga check valve hman dan
Check valve test state: lift check valve disc axis chu horizontal lam hawia perpendicular position-ah a awm a; swing check valve channel axis leh disc axis chu horizontal line nena inmil deuha awm a ni.
Strength test neih chhung hian test medium chu inlet atanga a value tarlan thlengin dah a ni a, a tawp dang chu khar a ni a, valve body leh valve cover-ah leakage a awm lo tih en turin qualified a ni.
Sealing test-ah hian test medium chu outlet end atanga luhtir a ni a, sealing surface chu inlet end-ah check a ni a, packing leh gasket-ah leakage awm lo chu qualified a ni.
Gate valve hmanga pressure test dan
Gate valve chakna test hi globe valve nen a inang reng a ni. Gate valve tightness test nan hian kawng hnih a awm a.
1. A niValve chhunga pressure chu a value tarlan angin a san theih nan gate chu hawng la; tichuan gate kha khar la, gate valve chu la chhuak nghal la, gate sir lehlamah seal-ah leakage a awm leh awm loh enfiah la, a nih loh leh test medium chu valve cover-a plug-ah direct-in a value tarlan angin inject rawh , gate sir lehlama seal-te chu enfiah rawh. A chunga kan sawi tak hi intermediate pressure test an ti a. Hetiang method hi DN32mm hnuai lam nominal diameter nei gate valve-a sealing test atan hman loh tur a ni.
2. A niThil dang chu valve test pressure chu a value tarlan thlenga a san theih nan gate hawn a ni a; tichuan gate chu khar la, blind plate tawp khat hawng la, sealing surface chu a leak em tih enfiah rawh. Tichuan hnunglam hawi leh la, a chunga test hi a qualified hma loh chuan ti leh rawh.
Pneumatic gate valve-a packing leh gasket tightness test hi gate tightness test hmain tih tur a ni.
Pressure test dan hmanga pressure tihhniamna valve
1. A niPressure reducing valve chakna test hi a tlangpuiin single-piece test hnuah an inzawm khawm a, an inzawm khawm hnuah pawh test theih a ni bawk. Strength test hun chhung: DN<50mm tan 1min; DN65 tan 2min aia tam a ni～ tih a ni150mm a ni a; DN>150mm atan 3min aia tam.
Bellows leh components te weld a nih hnuah pressure reducing valve pressure sang ber aiin a let 1.5 in hnawih la, boruak hmangin strength test neih rawh.
2. A niAirtightness test hi hnathawhna hmun tak tak angin tih tur a ni. Thli emaw tui emaw hmanga test dawnin nominal pressure aiin a let 1.1-in test tur a ni; steam hmanga test dawnin hnathawhna temperature hnuaia hnathawhna pressure sang ber hman theih a ni. Inlet pressure leh outlet pressure inthlauhna hi 0.2MPa aia tlem lo tur a ni. Test dan chu: inlet pressure siamrem hnuah valve-a adjusting screw chu zawi zawiin siamrem tur a ni a, chutiang chuan outlet pressure chu sensitive leh continuous takin maximum leh minimum value range chhungah a inthlak thei a, stagnation emaw jamming emaw awm lovin. Steam pressure tihtlemtu valve tan chuan inlet pressure chu hla taka siamrem a nih chuan valve khar hnuah valve khar a ni a, outlet pressure chu value sang ber leh hniam ber a ni. 2min chhungin outlet pressure tihsan chuan Table 4.176-22-a thil tulte chu a tlin tur a ni. Chutih rual chuan valve hnung lama pipeline chu The volume conforms to the requirements in Table 4.18 to be qualified; tui leh boruak pressure tihhniamna valve tan chuan inlet pressure set a nih a, outlet pressure zero a nih chuan pressure tihhniamna valve chu tightness test atan khar a ni a, minute 2 chhunga leakage awm lo chu qualified a ni.
Globe valve leh throttle valve te pressure test dan
Globe valve leh throttle valve chakna test atan chuan assembled valve chu pressure test frame-ah dah a ni tlangpui a, valve disc chu hawn a ni a, medium chu a value tarlan angin inject a ni a, valve body leh valve cover-ah sweat leh leakage awm leh awm loh enfiah a ni. Strength test hi piece pakhatah pawh tih theih a ni bawk. Tightness test hi shut-off valve tan chauh a ni. Test neih chhung hian globe valve valve stem chu vertical state-ah a awm a, valve disc chu hawn a ni a, medium chu valve disc hnuai lam tawp atanga a value tarlan thlengin dah a ni a, packing leh gasket chu check a ni a test a paltlang hnuah valve disc chu khar a ni a, a tawp dang chu hawn a ni a, leakage a awm leh awm loh enfiah a ni. Valve chakna leh tightness test tih tur a nih chuan strength test tih hmasak theih a ni a, chutah chuan pressure chu tightness test value tarlan angin tihhniam a ni a, packing leh gasket te chu enfiah a ni tichuan valve disc chu khar a ni a, outlet tawp chu hawn a ni a, sealing surface chu a leak em tih enfiah a ni.
Ball valve pressure test dan tur a ni
Pneumatic ball valve chakna test hi ball valve half-open state-ah tih tur a ni.
1. A niFloating ball valve sealing test: valve chu half-open state-ah dah la, a tawp khatah test medium dah la, a tawp dang chu khar rawh ball chu vawi tam tak rotate la, valve kha closed state-a a awm laiin closed end chu hawng la, packing leh gasket-a sealing performance chu a rualin enfiah rawh. Leakage a awm tur a ni lo. Chumi hnuah chuan a tawp lehlamah test medium chu luhtir a ni a, a chunga test ang kha tih leh a ni.
2. A niFixed ball valve sealing test: test hmain ball chu load tel lovin vawi tam tak rotate la, fixed ball valve chu closed state-ah a awm a, test medium chu a tawp khat atanga a value tarlan thlengin dah luh a ni a introduction end-a sealing performance chu pressure gauge hmangin enfiah a ni a, pressure gauge dikna chu 0 .5 to 1 a ni a, range chu test pressure aiin a let 1.6 a ni. Hun bituk chhunga depressurization phenomenon a awm loh chuan a qualified a; tichuan a tawp ber atang chuan test medium chu luhtir la, a chunga test ang kha ti leh rawh. Tichuan, valve chu half-open state-ah dah la, a tawp pahnih kha khar la, a chhung lam chu medium hmangin khat rawh. Test pressure hnuaiah packing leh gasket enfiah la, leakage a awm tur a ni lo.
3. A niThree-way ball valve chu a awmna apiangah a tight em tih enfiah tur a ni.
Post hun chhung: Mar-02-2022
