JB/T 7072-2004 Series of turbine speed governors and hydraulic devices

This standard specifies the product classification and series model compilation principles of turbine speed governors and hydraulic devices. This standard applies to Francis, axial, and impulse turbine speed governors (including operators and electronic load regulators) and hydraulic devices. JB/T 7072-2004 Series Model of Turbine Speed ​​Governors and Hydraulic Devices JB/T7072-2004 Standard download decompression password: www.bzxz.net

ICS27.140
Machinery Industry Standard of the People's Republic of China
JB/T7072-2004
Replaces JB/T7072-1993
Series table for governors and oil pressure supply units of hydraulic turbines2004-02-10 Issued
2004-06-01 Implementation
National Development and Reform Commission of the People's Republic of China Issued Foreword
Speed ​​governor product classification
Speed ​​governor series spectrum
Principles for compiling speed governor series spectrum
Speed ​​governor cost spectrum.
Hydraulic device series spectrum
Principles for determining the capacity level of hydraulic devices,
Capacity series of hydraulic devices.
Capacity series of speed governors
With pressure tank and connection Speed ​​governor and through-flow speed governor relay capacity and shortest closing time of the main pressure regulating valve when the pressure drop through the main pressure regulating valve is equal to 1.0MPa. Main pressure regulating valve oil flow rate oil pressure device capacity series table
JB/T7072-2004
JB/T7072-2004
This standard modifies and supplements the relevant contents of JB/T7072-1993 "Series of turbine speed governors and oil pressure devices" based on GB/T1.1-2000 "Guidelines for standardization work Part 1: Structure and abbreviation rules of standards" and domestic product conditions. This standard replaces JB/T7072-1993 "Series of turbine speed governors and oil pressure devices". This standard is proposed by the China Machinery Industry Federation: This standard is under the jurisdiction of the Control Equipment Sub-Technical Committee of the National Technical Committee for Standardization of Water Turbines. Drafting units of this standard: Harbin Electric Motor Factory Co., Ltd., Tianjin Electric Drive Design Institute. The main drafters of this standard are Lian Xide, Li Huang, Wang Guangzi, Dong Yuqing and Liu Shiqi. Scope
Hydraulic turbine governor and hydraulic device, series spectrum JB/T7072--2004
This standard specifies the product classification and series spectrum compilation principles of hydraulic turbine governor and hydraulic device. This standard is applicable to mixed flow, axial flow, impulse turbine governor (including operator, electronic load regulator) and hydraulic device governor product classification
2.1 Governor
Governor with pressure tank and relay: Governor without pressure key and relay: Flow-through governor.
Operator
Hydraulic operator:
Electric operator.
2.3 Electronic load regulator
Speed ​​regulator series spectrum
3.1 Principles for compiling speed regulator series spectrum
3.1.1 According to capacity, it is divided into four basic series: large, medium, small and extra small (see Table 1). The capacity range of each series is basically connected to each other.
Speed ​​governor capacity series classification
Extra small
Speed ​​governor without pressure tank and relay
>50000
>10000~50000b
>3000~10000b
170~3000°
Speed ​​governor with pressure tank and relay
>10000~50000
>1500~10000
170~1500
Refers to the relay capacity that the speed governor can be equipped with : Refers to single-nozzle impulse turbine governor, through-flow governor
Servomotor capacity range
1703000
Hidden-pressure operator
>10000~50000
>3000~10000
170~3000
Electric operator
>10000~50000
>3000~10000
350~-3000
Electronic load regulator
Matching unit power
40,75. 100
3,8, 18bZxz.net
3.1.2 The capacity of the governor with a relay is characterized by the servomotor capacity (see Table 2). Servomotor capacity is the capacity at the minimum required operating oil pressure.
Table 2 Governor with pressure tank and servomotor and through-flow governor servomotor capacity and shortest closing time Type
Governor with pressure tank and servomotor
Isobaric servomotor
Servomotor capacity
Shortest servomotor closing time
JB/T7072-2004
Governor with pressure tank and servomotor
Isobaric servomotor
Differential pressure servomotor
Through-flow governor
Table 2 (continued)
Servomotor capacity
Shortest servomotor closing time
3.1.3 The capacity of the governor without servomotor is based on the main pressure distribution diameter (see Table 3), and the corresponding oil flow rate is shown in Table 3. The following principles should be followed when selecting capacity
a) The design flow rate in the external pipeline matched with the speed governor is generally not more than 5m/sb) The oil pressure for calculating the speed governor capacity should be considered according to the lower limit of the normal working oil pressure; e) The maximum pressure drop through the main pressure distribution valve and the connecting pipeline shall not exceed 20% to 30% of the rated oil pressure: d) The shortest closing time of the relay shall meet the requirements of the unit. Table 3 When the pressure drop through the main pressure distribution valve is equal to 1.0MPa, the main pressure distribution valve oil flow rate is expressed by the diameter of the pilot valve in the first-stage amplification system. Oil flow rate Q
50~100
100~150
3.1.4 The capacity of the hydraulic operator is characterized by the relay capacity, which is the same as the speed governor with a relay. The relay capacity can be referred to Table 2. The electric operator is characterized by the product of the output shaft torque and the rotation angle M·(, and its capacity level is shown in Table 2. 3.1.5 The capacity of the electronic load regulator is characterized by the maximum power of the unit it is equipped with, in kilowatts (kW), and the capacity level is consistent with the generator capacity level.
3.1.6 The rated oil pressure levels of the speed governor and hydraulic operator are 2.5MPa, 4.0MPa and 6.3MPa. For speed governors and hydraulic operators supplied by gas and piston accumulators, the rated oil pressure can be increased to 10MPa and 16MPa. 3.2 Speed ​​governor spectrum
The speed governor spectrum is shown in Table 1, Table 2 and Table 3.
4 Hydraulic device series spectrum
This spectrum is applicable to separate and combined hydraulic devices, 4. 1 Principles for determining the capacity level of hydraulic devices
4.1.1 Capacity level
The capacity level is divided according to the size of the pressure tank volume (m). For pressure tanks with larger volumes, they can be divided into two tanks. 4.1.2 Rated oil pressure
The rated oil pressure level can be divided into 2.5MPa, 4.0MPa and 6.3MPa. 4.2 Capacity series of hydraulic devices
The capacity series of hydraulic devices is shown in Table 4.
Capacity series table of hydraulic devices
Capacity series
Separate type
16 (or 16/2)
20 (or 20/2)
25 (or 25/2)
JB/T7072—2004
Combined type
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