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[美洲标准产品] 美标测试电压力锅的内容

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发表于 2012-7-1 12:07 | 显示全部楼层 |阅读模式
广东安规检测
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请问各位高人UL1026中关于电压力锅测试内容在哪章中,请指只?
 楼主| 发表于 2012-7-3 08:38 | 显示全部楼层
谢谢回复
发表于 2012-7-1 15:48 | 显示全部楼层
29 Pressure Vessels and Parts Subject to Pressure . . . . . . . . .  . . . . . . . . . . . . . . . . . . .41
" c  U! L2 T8 G7 c, w, K2 V29.1 Except as noted in 29.2, a pressure vessel having an inside diameter of more than 6 inches (152
# y( C- T  j+ O3 e5 umm) and subject to a gauge pressure of more than 15 lbf/in2 (103 kN/cm2) shall be certified by the
( z, M# U% d4 sNational Board of Boiler and Pressure-Vessel Inspectors and marked in accordance with the appropriate
2 w0 Q' s6 @5 q% V$ g* Eboiler and pressure vessel code symbol of the American Society of Mechanical Engineers (ASME) (²H²,6 E, t- d8 u- Y9 Q# w8 @
²M², ²S², or ²U²) for a working pressure not less than the pressure determined by applying 29.3.
% Z+ d- T4 f0 K2 q! Z$ \29.2 If a pressure vessel, because of its application, is not covered under the inspection procedures of2 Z# g% D* [8 ^: P$ i
the ASME code, it shall be designed and constructed so that it complies with the requirements in 29.3.
8 x! I+ {* C# v5 S7 |$ w/ Y9 t6 V+ u29.3 Except as noted in 29.4 and 29.5, a part that is subject to air or vapor pressure (including the vapor! N' \+ \# l: o3 C4 u, d
pressure in a vessel containing only a superheated fluid) during normal or abnormal operation shall2 [- w7 [$ s7 a5 C+ r! x
withstand without bursting or leaking a pressure equal to the highest of the following that is applicable:
; i5 V, }* o! g" I4 h! r) C7 A, E5 Va) Five times the pressure corresponding to the maximum setting of a pressure-reducing valve" O8 B* C  ~( w* @$ W! D- x
provided as part of the assembly, but no more than five times the marked maximum supply
9 g! }; ~& G* A/ i, {) u9 _pressure from an external source and no more than five times the pressure setting of a
8 k2 ~( ~& }: @2 A- J5 hpressure-relief device provided as part of the assembly.
; i! R! K1 {6 fb) Five times the marked maximum supply pressure from an external source, except as
3 M4 H# c/ F, X, ^5 U1 u- b! w# m$ [provided in (a).
6 [2 k% h, }, F4 h0 a1 hc) Five times the pressure setting of a pressure-relief device provided as part of the assembly.& z) O; `9 ~" @
d) Five times the maximum pressure that can be developed by an air compressor that is part of. P! I6 X2 Q2 a: R6 I1 W
the assembly, unless the pressure is limited by a pressure-relief device in accordance with (a).
+ D# I) M  t' Q* u2 o  g9 ^e) Five times the working pressure marked on the part.# c& y$ A1 E9 W# k
29.4 A test need not be performed to determine whether a part complies with the requirement in 29.3 if
* p, F# D$ x" z. G$ v( B+ I/ Dstudy and analysis indicate that the strength of the part is adequate for the purpose as a result of its* t5 h) [/ m, i7 c$ D
material and dimensions – for example, copper or steel pipe of standard size and provided with standard% [9 g  u+ [/ C/ Z  d1 N- e5 ?
fittings might be considered to have adequate strength.
9 r0 ]  ?" ]9 ^* b) e5 \29.5 A pressure vessel bearing the ASME code inspection symbol (²H², ²M², ²S², or ²U²) is considered% O* B0 U) S( r% V3 N; z
to comply with the requirement in 29.3 if the vessel is marked with a value of working pressure not less
4 `  ~6 [0 y- {6 C3 K/ H! lthan that to which it is subject during normal or abnormal operation.
% f7 c# f# W6 a! [* K* v/ H: m& y9 L- n29.6 If a test is necessary to determine whether a part complies with the requirement in 29.3, two samples1 ^; {% b: I+ f/ i
of the part are to be subjected to a hydrostatic-pressure test. Each sample is to be filled with water as to$ I1 u8 G% D7 N6 ^. j
exclude air and is to be connected to a hydraulic pump. The pressure is to be raised gradually to the
9 d2 m, Y) f$ fspecified test value and is to be held at that value for 1 minute. The results are not acceptable if either
5 K$ Z" I0 |6 Y  E& a3 Wsample bursts or leaks, except as indicated in 29.7.
6 o2 d! {  U" |3 E& w7 W& e. f29.7 Leakage at a gasket during the hydrostatic-pressure test is not unacceptable unless it occurs at a
6 ~4 k( K, G  Spressure 40 percent or less of the required test value.
5 Y! q( [  N( i% H2 c29.8 A means for relieving pressure shall be provided for all parts in which pressure might be generated
) I) u/ [4 b* Q1 ~in the event of fire.
' Q6 n7 I, T1 a2 Y29.9 Pressure-relief devices (see 29.15), fusible plugs, soldered joints, nonmetallic tubing, or other2 Z6 A, {  H! B8 B) ?7 V
pressure-relief means or the equivalent may be employed to comply with the requirements in 29.8.  `5 g& A  r/ I
29.10 There shall be no shut-off valve between the pressure-relief means and the parts that it is intended
1 l8 P. e0 k2 A* m. q- _to protect.
9 o0 `% X6 t  I3 A* ^29.11 A vessel having an inside diameter of more than 3 inches (76.2 mm) and subject to air or steam
/ c" ^7 f" \) R) F8 N4 cpressure generated or stored within the appliance shall be protected by a pressure-relief device.% }$ ]: i3 c* s/ z- z; v1 g& s0 b
29.12 The start-to-discharge pressure setting of the pressure-relief device shall not be higher than the; x- U3 B, E7 h/ r
working pressure marked on the vessel. The discharge rate of the device shall acceptably relieve the
3 L. i5 f  H# q5 k+ @pressure.
5 J2 X) \& y6 s% B. U# y) w29.13 A pressure-relief device shall comply with all four of the following:# x6 _4 c0 Z$ [/ c
a) Shall be connected as close as possible to the pressure vessel or parts of the system that it
9 _) X0 d1 F7 e' Nis intended to protect;/ D% f6 ^2 c+ t( w9 ^
b) Shall be installed so that it is readily accessible for inspection and repair and cannot be- Y! j* d  r( h1 K& b0 R" f6 O
readily rendered inoperative;* k* h! @# ]" m' y' S0 Q
c) Shall have its discharge opening located and directed so that the risk of scalding is reduced7 v! q3 [! ^- B. [" `" @) z$ m' m4 z
to a minimum; and
1 J# F- A3 o5 R9 M( ]' U/ X2 x. Nd) Shall have its discharge opening located and directed so that operation of the device does0 |! B3 W7 b5 I$ J2 o
not deposit moisture on bare live parts or on insulation or components affected detrimentally by8 r6 b5 A5 S/ L+ r0 ], h/ ]- L6 F
moisture.+ p3 V/ A; W+ P+ f
29.14 A pressure-relief device having an adjustable setting shall be judged on the basis of its maximum
: o( w2 E; c8 N3 T0 g% Jsetting unless the adjusting means is sealed at a lower setting.+ o2 D  i0 p2 J  b
29.15 A pressure-relief device is considered to be a pressure-actuated valve or rupture member intended. e  A1 {. a7 a( ~% j* M3 h
to relieve excessive pressures automatically.+ e" E  X# m$ ^
29.16 Where a pressure relief device is required, the control responsible for limiting the pressure in the0 b5 `2 ^# j/ k! R8 o
vessel shall be capable of performing under rated load for 100,000 cycles of operation and shall prevent
0 f! c2 K" I7 P0 r. A% Rthe pressure from exceeding 90 percent of the relief device setting under any condition of normal
$ M" Q7 l8 Z! e$ l" s# u! o9 C* Roperation.
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