JB/T 11049-2010 Self-operated pressure regulator English
1 Scope
This standard specifies the product classification and basic parameters, requirements, test methods, inspection rules, as well as marking, packaging and storage of self-operated pressure regulator (hereinafter referred to as the "pressure regulator").
It is applicable to pressure regulators consisting of valves and actuators for measurement and control in industrial processes.
It is not applicable to pressure regulators subjected to radioactive operating conditions and other hazardous operating conditions.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB/T 4213-2008 Pneumatic industrial process control valves
GB/T 13384-2008 General specifications for packing of mechanical and electrical product
JB/T 8218 Terms for final controlling element
3 Terms and definitions
For the purposes of this document, the terms and definitions given in JB/T 8218, as well as the following apply.
3.1
pressure-to-close action
action mode by which the valve interceptor tends to close with the increased setting pressure (difference of pressure)
3.2
pressure-to-open action
action mode by which the valve interceptor tends to open with the increased setting pressure (difference of pressure)
3.3
pipe with pressure tap
pipe fitting connected with the process pipe and the body of pressure regulator, with pressure tap set on the pipe wall for releasing fluid pressure
Note: Generally, the pressure tap is a round hole, its axis is perpendicular to the pipe axis, and the edge is sharp but without spikes.
3.4
control line
pressure guiding pipe fittings connected to the actuator
3.5
condensation chamber
container used to isolate high-temperature controlled media from entering the actuator directly
3.6
pressure load characteristic
deviation of the downstream setting pressure caused by the change of upstream pressure in specified range under the condition of constant output flow, which is generally expressed in a percentage of the setting pressure
3.7
flow load characteristic
deviation of the downstream setting pressure caused by the change of downstream output flow in specified range under the condition of specified upstream pressure, which is generally expressed in a percentage of the setting pressure
3.8
setting pressure
target pressure of the pressure regulator when it is working normally. The setting pressure of the pressure-to-open regulator may be called the setting opening pressure (in MPa)
3.9
setting pressure range
target pressure range of the pressure regulator, which may be adjusted by the set spring
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Product classification and basic parameters
4.1 Product classification
4.2 Basic parameters
4.3 Operating conditions
5 Requirements
5.1 Setting pressure range
5.2 Pressure load characteristic
5.3 Flow load characteristic
5.4 Opening pressure error
5.5 Difference of pressure
5.6 Tightness of packing box and other connections
5.7 Tightness of air chamber
5.8 Compressive strength
5.9 Leakage
5.10 Rated flow coefficient
5.11 Resistance to operating vibration
5.12 Action life
5.13 Appearance
6 Test methods
6.1 Test conditions and description
6.2 Setting pressure range
6.3 Pressure load characteristic
6.4 Flow load characteristic
6.5 Opening pressure error
6.6 Difference of pressure
6.7 Tightness of packing box and connections
6.8 Tightness of air chamber
7 Inspection rules
8 Marking, packaging and storage
Bibliography
Figure 1 Schematic diagram of test devices for pressure and flow load characteristic tests
Figure 2 Schematic diagram of test devices for tests on opening pressure error and difference of pressure
