Xavfsizlik klapani nima?

Xavfsizlik klapani (yoki bosim tushirish klapani) — bosim oldindan belgilangan sozlash nuqtasidan oshganda suyuqlikni avtomatik ravishda chiqarib yuboradigan qurilma. U ASME VIII bo'lim, ISO 4126 yoki PED talablariga muvofiq uskunani ortiqcha bosimdan himoya qiladi.

Gaz xizmati uchun teshik maydoni qanday hisoblanadi?

For gas/vapor service per API 520: A = W / (C × Kd × P₁ × Kb × √(M/TZ)), where W is required capacity, C is gas constant factor, Kd is discharge coefficient, P₁ is relieving pressure, Kb is back pressure correction, M is molecular weight, T is temperature, and Z is compressibility factor.

Standart API teshik belgilanishlari qanday?

API 526 defines standard orifice sizes designated by letters: D (0.110 in²), E (0.196 in²), F (0.307 in²), G (0.503 in²), H (0.785 in²), J (1.287 in²), K (1.838 in²), L (2.853 in²), M (3.60 in²), N (4.34 in²), P (6.38 in²), Q (11.05 in²), R (16.0 in²), T (26.0 in²).

Sozlash bosimi va chiqarish bosimi o'rtasidagi farq nima?

Set pressure is the pressure at which the valve begins to open. Relieving pressure is the set pressure plus allowable overpressure (typically 10% for single valves per ASME VIII). The sizing calculation uses relieving pressure (absolute) as P₁.

Orqa bosimni hisobga olish kerakmi?

Ha. Doimiy orqa bosim klapan bo'ylab samarali differensialini kamaytiradi. Oddiy klapanlar uchun orqa bosim tuzatish koeffitsienti Kb sig'imni sozlaydi. Muvozanatlangan qo'ng'iroqcha yoki pilot boshqaruvli klapanlar orqa bosimdan kamroq ta'sirlanadi.

Muhandislik uchun bepul vosita

Xavfsizlik klapani o'lchamini hisoblash kalkulyatori

ISO 4126 / API 520 bo'yicha bosim xavfsizlik klapanlarini o'lchamlang. Zarur teshik maydonini hisoblang va gaz, bug' yoki suyuqlik xizmati uchun standart teshik harfini tanlang.

ISO 4126API 520/526Gaz / Bug' / Suyuqlik

Fluid Type

Talab qilinadigan o'tkazuvchanlik (kg/h)

Set Pressure (bar g)

Back Pressure (bar g, atmosfera bosimi uchun 0)

Ishchi harorat (bosim pasayganda) (°C)

Molekulyar massa (gaz uchun, masalan, havo uchun 29)

Solishtirma issiqlik sig'imlarining nisbati k (Cp/Cv)

Siqilish koeffitsienti Z

Quick presets

Results

Talab qilinadigan teshik yuzasi

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Standart teshik harfi

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Standart teshik yuzasi

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Ishchi bosim (mutlaq)

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Kd (oqim koeffitsienti)

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Klapan ko'ndalang kesimi

Gaz / Bug' o'lchamlari (API 520)

Standart API teshik belgilashlari (API 526)

Letter	Area (mm²)	Area (in²)	Tipik kirish × chiqish
D	71.0	0.110	1″ × 2″
E	126.5	0.196	1″ × 2″
F	198.1	0.307	1½” × 2½”
G	324.5	0.503	1½” × 3″
H	506.5	0.785	2″ × 3″
J	830.3	1.287	3″ × 4″
K	1186	1.838	3″ × 6″
L	1841	2.853	4″ × 6″
M	2323	3.600	4″ × 6″
N	2800	4.340	4″ × 6″
P	4116	6.380	6″ × 8″
Q	7129	11.05	6″ × 10″
R	10323	16.00	8″ × 10″
T	16774	26.00	8″ × 12″

⚠️ Note: Ushbu kalkulyator dastlabki o'lchamlashni ta'minlaydi. Yakuniy klapan tanlovi klapan ishlab chiqaruvchisi tomonidan tasdiqlanishi va tegishli me'yoriy hujjatlar (ASME VIII, PED va boshqalar) talablariga muvofiq bo'lishi shart.

Xavfsizlik Klapanini O'lchamlash Kalkulyatori | ISO 4126 | Bosim Tushirish Klapani

Published by Nikolai Shelkovenko on Fevral 15, 2026 Fevral 15, 2026

Results

Gaz / Bug' o'lchamlari (API 520)

Standart API teshik belgilashlari (API 526)

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