Purpose and scope of application:
this standard applies to the displacement range for VS (
0~180mm)
TD (
0 ~ 120毫米)
, load range is 154 ~ 217384 n, using temperature range -
Steam-water variable
spring of 20 ℃ ~ 200 ℃.
control valve set of steam-water pipes of the spring position: control valve group supports under the pipe elbow, usually for the normal temperature of the pipeline can be fixed frame, with thermal pipeline, should according to the requirements of the flexible analysis will be set to a fixed frame, a frame another set to slide or guide frame.
If valve group is very long, only on both ends of the valve group support, can make the valve group of intermediate prolapse is larger, should add a bracket in the middle, the middle bracket to use adjustable bracket, in order to install.
Can also be set to a fixed frame, middle frame expansion to the displacement on both ends.
the relief valve position determination of steam-water pipes of the spring: relief valve nozzle under external load caused by the bending moment requires small as far as possible, so as not to affect the performance of the valve body deformation.
In addition to consider when setting stent pipeline under the gravity load, also should pay attention to when the discharge fluid reaction force and its direction.
Safety valve outlet pipe bracket of a root point should not take root in the flexible large steel structure, at the same time supporting points of vertical thermal displacement should be small as far as possible.
On the higher temperature of pipe, valve export levels should be long enough, avoid stents escapes.
Relief valve suddenly open, prone to vibration, especially large diameter, large differential pressure relief valve should be paid attention to vibration control, the outlet pipe of gas-liquid two phase, more attention should be paid to vibration control and avoid water hammer.
the variable type spring hanger has four big series, mainly by the northwest electric power design institute of design of T1, T2, T3, T4, T5 series, east China electric power design institute of design of TH1, TH2, Tspan type series, the TD series (
JB / J8130。
2 -
1999).
And chemical design institute design VS series, the series of the basic features, the same bearing capacity for Dan - 20
21000daN。
Structure mainly pendant, supporting type and parallel suspension bearing type.
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