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Katup globe cryogenic stainless steel
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Katup globe cryogenic stainless steel

Katup globe cryogenic stainless steel

It is a type of valve engineered to operate in extremely low temperatures, typically below -100℃(-148℃F). These valves are designed to handle cryogenic fluids such as liquid nitrogen, liquid oxygen, and LNG, ensuring safe, precise flow control in environments with extreme cold.

Deskripsi

Keterangan

 

Katup Globe Cryogenic Stainless Steel adalah katup yang dirancang untuk kondisi kerja suhu rendah . terbuat dari baja tahan karat dan memiliki ketahanan korosi yang baik dan kekuatan struktural . ini terutama terdiri dari badan katup, katup, katup. Kinerja penyegelan kotak isian di bawah aksi medium suhu rendah . Permukaan penyegelan cakram katup dan kursi katup sering terbuat dari bahan karbida semen untuk meningkatkan resistensi keausan dan penyegelan . yang digunakan dalam koneksi katup {katup yang dibumbui {Koneksi flange {hubungkan 5. Penyimpanan dan Transportasi Gas Alam Liquefied (LNG), Transportasi Gas Minyak (LPG) cair, proses kimia suhu rendah, dll .

 

 

Fitur

 

Desain Bonnet Diperpanjang
Katup globe cryogenic stainless steel mengadopsi struktur topi yang diperluas, yang merupakan salah satu desain kunci untuk jenis katup ini untuk beradaptasi dengan lingkungan suhu rendah . media kriogenik (seperti nitrogen cair, katup liquid, dan lng (lng) biasanya dalam kisaran suhu {{{{{2} {2} cairan {lng {lng {{{{{{{{{{{{2 {2} {{2} {{{{{{{{{{{2} {{2} {2 {2} system to fail, especially the valve stem packing is prone to freezing, shrinkage or brittle cracking, which in turn causes leakage risks. The extended bonnet isolates the packing box from the cryogenic medium to form a thermal gradient zone, which reduces the efficiency of heat conduction from the valve stem to the outside, and keeps the temperature of the area where the valve stem packing is located within a safe and controllable range (usually above 0℃). This structure not only prevents the sealing material from degenerating due to low temperature, but also reduces the impact of thermal shock on the material structure, thereby reducing the maintenance frequency and ensuring the long-term stable operation of the valve.

 

Ketangguhan struktural dan resistensi korosi
The key pressure-bearing parts of the valve (valve body, valve cover, valve stem) are mainly made of austenitic stainless steel (such as ASTM A351 CF8M or 316/316L materials). This type of material has excellent low-temperature impact toughness and can maintain good ductility and structural integrity at extremely low temperatures of -196℃without brittle Kegagalan . Mengambil 316L stainless steel sebagai contoh, dampak ketangguhannya pada -196 derajat dapat dipertahankan pada lebih dari 60 J/cm², yang memiliki keunggulan yang jelas dibandingkan bahan baja karbon biasa (rapuh dan rapuh pada suhu di bawah -40 {{13} yang sama pada suhu di bawah {-40 {13} {{{12} {13} {{12} {{13} {{12} {{13} {{12} {13} {{12} {{{12} {{12 {{ Gas dalam media seperti oksigen cair, nitrogen cair, dan LNG, yang secara signifikan dapat mengurangi risiko kebocoran korosi .

 

Struktur kursi katup bola
The Stainless Steel Cryogenic Globe Valve adopts a spherical sealing surface structure and is equipped with a linear lifting disc movement form to achieve high-precision flow regulation capabilities. Compared with butterfly valves or gate valves, spherical valve seats can provide more linear and predictable flow characteristic curves within a smaller opening range, which facilitates stable control of small flows under low temperature conditions. In liquefied natural gas (LNG) storage and transportation systems, flow control accuracy is critical to pressure stability and temperature control, and the adjustment error is usually required to be no more than ±2%. Globe Valve with spherical valve seats can achieve this control goal by improving the sealing contact stability between the valve disc.

 

Beberapa kombinasi penyegelan
In order to meet the requirements of different cryogenic media and working conditions for sealing performance, Stainless Steel Cryogenic Globe Valve provides a variety of sealing material combinations. Commonly used ones include metal-to-metal seals, PTFE soft seals and composite seal structures. Metal-to-metal seals are suitable for high-frequency opening and closing and working conditions containing particulate impurities, and have excellent ketahanan aus dan resistensi creep suhu tinggi;
Segel lunak PTFE (Polytetrafluoroethylene) digunakan dalam sistem media bersih dengan persyaratan yang lebih tinggi untuk kebocoran nol, seperti pengiriman oksigen cair atau pengiriman gas medis; Struktur penyegelan komposit menggabungkan kekakuan logam dengan fleksibilitas polimer, dan dapat mempertahankan integritas penyegelan yang baik dalam kondisi frekuensi pembukaan dan penutupan tinggi dan fluktuasi sistem besar .

 

Tag populer: Stainless Steel Cryogenic Globe Valve, China Stainless Steel Cryogenic Globe Valve Produsen, Pemasok, Pabrik

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