Malmist maakera ventiil
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Malmist maakera ventiil

Malmist maakera ventiil on sundtihendav ventiil, nii et kui ventiil on suletud, tuleb kettale avaldada survet, et tihenduspind ei lekiks. Kui keskkond siseneb ketta alt klappi, on takistus, mida tööjõud peab ületama, ventiili varre ja tihendi hõõrdejõud ning keskkonna rõhust tekkiv tõukejõud. Klapi sulgemise jõud on suurem kui klapi avamise jõud, nii et malm Gloobiventiili klapi varre läbimõõt peaks olema suur, vastasel juhul painutab klapi vars rikke üles.

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Tootekirjeldus

1. SissejuhatusMalmGlobeValve

Malmglobevalve is a forced-sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface to not leak. When the medium enters the valve from below the disc, the resistance that the operating force needs to overcome is the friction force of the valve stem and packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so MalmThe diameter of the valve stem of the globevalve should be large, otherwise the valve stem will bend up failure.

MalmGlobeValve

2. Parameters of MalmGlobeValve

Ventiili tüüp
Malmglobevalve
DN
DN10~DN600
PNïMPMP
1,6~16Mpa
Disaini temperatuurivahemik
-15â „ƒï½ž200â„ ƒ
Ühenduse tüüp:
Ääristatud
Täituri tüüp
Käsiajam, pneumaatiline, hüdrauliline või elektriline ajam
Kohaldatav keskmine
Vesi, nafta, gaas ja mitmesugused korrosioonikeskkonnad


Varuosad
Materjal
Kere katte ketas
Sepistatud teras, valuteras
Vars
Sepistatud teras, valuteras
Pakkimine
Paindlik grafiit, täiustatud paindlik grafiit, PTEE
Vahevöö tihendamine
Tõhustatud Flexiblo grafiit, roostevaba teras, PTFE
Pitseeriv nägu
13Cr,STL, PTFE, nailon, kehamaterjaliga

MalmGlobeValve
MalmGlobeValve


3. Advantages of Malmglobevalve

1) The structure of the Malmglobevalve is simpler than that of the gate valve, and it is more convenient to manufacture and maintain.
2) tihenduspindof Malmglobevalve is not easy to wear and scratch, and the sealing performance is good. There is no relative sliding between the valve disc and the sealing surface of the valve body when opening and closing, so neither abrasion nor abrasion is serious. The sealing performance is good and the service life is long. .
3) When the Malmglobevalve is opened and closed, the disc stroke is small, so the height of the shut-off valve is smaller than that of the gate valve, but the structure length is longer than that of the gate valve.
4) Malmglobevalve has a large opening and closing moment, which is laborious and takes a long time.
5) The medium channel in the Malmglobevalve is tortuous, the fluid resistance is large, and the power consumption is large.
6) When the nominal pressure of the medium flow direction of the Malmglobevalve PN≤16MPa, the downstream flow is generally adopted, and the medium flows upward from the bottom of the valve flap; when the nominal pressure PN≥20MPa, the reverse flow is generally adopted, and the medium flows downward from the top of the valve flap. In order to increase the seal performance. When in use, the shut-off valve medium can only flow in one direction and cannot change the direction of flow.
7) The valve flap is often eroded when the Malmglobevalve is fully opened.

MalmGlobeValve
4. KKK

MalmGlobeValve

MalmGlobeValve

MalmGlobeValve

MalmGlobeValve


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