Baker Hughes Consolidated 1510 Series, Инструкция по эксплуатации

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Consolidated 1511 Series Safety Valve Instruction Manual
| 25 © 2020 Baker Hughes Company. All rights reserved.
Adjusting Ring Settings
Note: It is important to note that all adjustments of adjusting rings are Baker Hughes initial adjustments only,
and are not intended to be final adjustments. This final adjustment must be made on the operating system
with conditions approximating those that will be realized under actual operating conditions.
Table 10: Adjusting Ring Settings
Orifice
Upper Ring
No. of Notches
Lower Ring
No. of
Notches
Upper Ring Position From Being
Level with Bottom of the Disc
Lower Ring Position From Seat
Level
H 30 24 Down Two Turns Down 2 to 6 Notches
J 36 30 Down Two Turns Down 2 to 7 Notches
K 45 32 Down Two Turns Down 2 to 5 Notches
L 54 40 Down Two Turns Down 3 to 13 Notches
M 45 36 Down Two Turns Down 4 to 8 Notches
N 50 40 Down Two Turns Down 5 to 12 Notches
P 50 42 Down Two Turns Down 9 to 13 Notches
Q 60 48 Down Two Turns Down 9 to 15 Notches
Periodic tests may be required for verification of valve
set pressure. The Consolidated EVT provides for this
capability. However, set pressure is the only factor which
can be verified. Valves should be initially set using full
system pressure (as outlined in Section XIV.A). The EVT
may be used for subsequent checks of set pressure.
Accuracy of results obtained by the use of this device
depends on several factors. First, friction must be
reduced as a source of error so that, for a given
pressure, the EVT repeatedly produces exactly the same
lifting force. Second, gauge calibration and vibration,
and the effective seating area between valves of the
same size and type, will also affect accuracy. With well
calibrated gauges and valve seats in good condition,
accuracy on the order of 1 percent of set pressure may
be expected. Upon request, Baker Hughes will provide
pertinent written material concerning the EVT. This
material specifies all required information necessary to
ensure proper usage of this device.
D. Electronic Valve Testing (EVT)
XIV. Setting and Testing (Cont’d)