Foreword
This document is drafted in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: the structure of standardized documents and drafting rules".
This document replaces GB/T 12222-2005 "multi-turn valve drive connection", compared with GB/T 12222-2005, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) changed the scope and increased the multi-turn / direct stroke drive and valve connection surface schematic (see Chapter 1, Chapter 1 of the 2005 version).
b) Added terminology and definitions for "direct stroke drives" (see 3.3).
c) Flange designations and dimensions for F05, F48 and F60 have been added (see Tables 1 to 5).
Added flange designation representation (see Chapter 6); d
e) Added dimensions for components that transmit torque only: Group C (see 7.4).
f) Added dimensions for components that transmit torque only: Group D (see 7.5).
g) Added component size for transfer of thrust only: Straight stroke drives (Group E) (see 7.6) This document is modified to adopt ISO 5210:2017 "Connection of multi-turn valve drives for industrial valves". The technical differences between this document and ISO5210:2017 and their causes are as follows.
The normative reference GB/T 196 replaced ISO273 (see 5.1), the degree of consistency between the two documents is modified to adapt to our technical conditions and to meet our application needs: increased the "flange code" terms and definitions (see 3.G. to meet our needs in practical applications; a will "yield strength R. less than or equal to 200MPa materials should be agreed by the supply and demand sides" to "yield strength R. less than 200MPa materials should be agreed by the supply and demand sides" (see 5.4), to meet the needs of our country in practical applications. This document makes the following editorial changes.
Changed the name of the document to "Connection of multi-turn valve actuators".
Removed references that do not appear in the text.
Please note that some of the contents of this document may be covered by patents. The issuing body of this document does not assume responsibility for identifying patents, and this document is presented by the China Machinery Industry Federation.
This document is attributed to the National Technical Committee for Standardization of Valves (SAC/T C188)
1 Scope
This document specifies the requirements related to the connection of multi-turn or direct stroke drives connected to valves: a multi-turn drive connected to industrial valves [see Figure 1a)] or intermediate support connected to [see Figure 1] necessary flange
Dimensions.
The necessary multi-turn drive connected to the driven parts of the drive form and size; a direct connection with the industrial valve flange connection surface dimensions and the reference value of the torque and thrust of the connecting flange. This document applies to the multi-turn valve drive and valve connection dimensions Note 1: The "valve" in this document includes "valve with intermediate support" [see Figure 1b)]. Note 2: When a multi-turn drive consists of a multi-turn drive and an integral multi-turn gearbox or direct stroke assembly, the connection is as specified in this document, see Fig. la) and Fig. 1b). When the multi-turn drive consists of a multi-turn drive with a separate multi-turn gearbox or straight stroke assembly, the connection of the multi-turn drive connected to the gearbox is as specified in this document. See Figure 1c) and Figure 1d)
2 normative reference documents
The contents of the following documents constitute the essential provisions of this document through the normative references in the text. Among them, note the date of the reference document, only the date of the corresponding version applies to this document; do not note the date of the reference document, its latest version (including all the revision of the list) applies to this document.
GB/T 196 Basic dimensions of common thread (GB/T 196-2003, ISO724:1993, MOD)
3 Terminology and definitions
The following terms and definitions are applicable to this document.
Actuator
A device used to operate the valve and connected to the valve.
Note: The device can be driven by manual, electric, pneumatic, hydraulic or a combination of these forms of power source, and its motion can be controlled by the amount of travel, torque or axial thrust.
4 Maximum torque and maximum thrust
The torque and thrust listed in Table 1 indicates the maximum torque and maximum thrust that can be transmitted through the flange of the drive and the driving parts.
The torque and thrust values specified in Table 1 are based on a bolt tensile stress of 290 MPa and a coefficient of friction between the flange faces of 0.2.
Different parameters will result in different values of transmitted torque and/or thrust. See Appendix A for calculation methods.
When selecting the flange size for a particular application, it is appropriate to consider the additional torque and/or thrust that may be generated on the stem due to size, safety factor, inertia or other similar factors. In particular, when selecting a flange, the selected drive should be calculated and considered in the output torque and (or) the maximum thrust generated by the thrust and the ability of the valve and drive to withstand these thrusts.
5 flange connection size
5.1 The flange connecting the driver to the valve should conform to the dimensions specified in Figure 2 and Table 2. The driver and the valve can be connected by studs or bolts. Such as the use of bolted connections, the bolt hole gee diameter should be matched with the size d, in Table 2. Thread according to the provisions of GB / T 196.
5.2 stud or bolt holes should be staggered drive the axis of symmetric distribution, as shown in Figure 3 and Table 3. The flange connecting the driver to the valve, should be used with positioning shoulder flange, the fit size according to Table 2 d; requirements. 535.4 The minimum value of h; in Table 2 applies to the material yield strength R greater than or equal to 200MPa flange, yield strength R less than 200MPa material should be agreed between the supply and demand. h; the minimum value should be greater than or equal to d. 5.5 size; is based on the provision of Adequate standoffs for placing nuts and bolt heads. The minimum value of this area is centered on the bolt hole. with (d;-d;)/2 as radius.
5.6 The flange size values specified in Table 2 are based on a maximum tensile stress of 290 MPa for the bolt. by mutual agreement between supply and demand, materials with different tensile strengths can be used without changing the bolt size, but the value of the transmitted torque will vary.
6 Flange code
Flange code (see 3.6) is determined according to Table 1
7 Dimensions of the driven and driven parts
7.1 General requirements
The dimensions of the driven and driven parts should be in accordance with the dimensions given in Table 4 - Table 8. The depth of engagement and the area between the contact surface of the driven part and the driven part should be considered to ensure that the stress caused by the contact does not exceed the capacity of the material of the driven component. In some cases, it is possible to use materials with superior mechanical properties and/or to reduce the output torque of the drive.
7.2 Dimensions of components that transmit both torque and thrust: Group A
Both torque and thrust transmission components structure as shown in Figure 4, the drive and valve (valve stem) connection shown in Figure 5, the size of the moving parts according to the provisions of Table 4.
7.3 Size of the component that transmits torque only: Group B
The size structure of group B components is shown in Figure 6, and the connection between the driver and the valve (valve stem) is shown in Figure 7, and the size of the moving parts is specified in Table 5.
7.4 Size of components for torque transmission only: Group C
The size structure of group C components is shown in Figure 8, and the dimensions of the actuators are as specified in Table 6.
7.5 Component size for torque transmission only: Group D
The dimensional structure of group D components is shown in Figure 9. The dimensions of the driving parts are as specified in Table 7.
7.6 Dimensions of components for transferring thrust only: straight stroke drive group (Group E) Except for the determination by mutual agreement between supply and demand, the structure of straight stroke drive group is shown in Figure 10, and the dimensions are as specified in Table 8 Dimensions di.d2, d;, h, and h, shall conform to the provisions of Chapter 5. The size of the penetration hole d; is selected according to d, in accordance with the provisions of Figure 2 and Table 2.
Appendix A (informative) calculation instructions
A.1 Calculation basis for flange torque and thrust values
For a given size of the flange, its maximum output torque and thrust value is determined by the method specified in this document. This document determines the principles of geometric design and size determination corresponding to each flange size.
The maximum output torque and thrust of each flange size are determined by the calculation method of formula (A.1) and formula (A.2), which can also be verified by the calculation method specified in other standards currently in effect.
At present, there are different calculation methods from this document in the industry to calculate the maximum output torque or thrust value of the flange
Foreword
1 Scope
2 normative reference documents
3 Terminology and definitions
4 Maximum torque and maximum thrust
5 flange connection size
6 Flange code
7 Dimensions of the driven and driven parts
Appendix A (informative) calculation instructions
Foreword
This document is drafted in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: the structure of standardized documents and drafting rules".
This document replaces GB/T 12222-2005 "multi-turn valve drive connection", compared with GB/T 12222-2005, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) changed the scope and increased the multi-turn / direct stroke drive and valve connection surface schematic (see Chapter 1, Chapter 1 of the 2005 version).
b) Added terminology and definitions for "direct stroke drives" (see 3.3).
c) Flange designations and dimensions for F05, F48 and F60 have been added (see Tables 1 to 5).
Added flange designation representation (see Chapter 6); d
e) Added dimensions for components that transmit torque only: Group C (see 7.4).
f) Added dimensions for components that transmit torque only: Group D (see 7.5).
g) Added component size for transfer of thrust only: Straight stroke drives (Group E) (see 7.6) This document is modified to adopt ISO 5210:2017 "Connection of multi-turn valve drives for industrial valves". The technical differences between this document and ISO5210:2017 and their causes are as follows.
The normative reference GB/T 196 replaced ISO273 (see 5.1), the degree of consistency between the two documents is modified to adapt to our technical conditions and to meet our application needs: increased the "flange code" terms and definitions (see 3.G. to meet our needs in practical applications; a will "yield strength R. less than or equal to 200MPa materials should be agreed by the supply and demand sides" to "yield strength R. less than 200MPa materials should be agreed by the supply and demand sides" (see 5.4), to meet the needs of our country in practical applications. This document makes the following editorial changes.
Changed the name of the document to "Connection of multi-turn valve actuators".
Removed references that do not appear in the text.
Please note that some of the contents of this document may be covered by patents. The issuing body of this document does not assume responsibility for identifying patents, and this document is presented by the China Machinery Industry Federation.
This document is attributed to the National Technical Committee for Standardization of Valves (SAC/T C188)
1 Scope
This document specifies the requirements related to the connection of multi-turn or direct stroke drives connected to valves: a multi-turn drive connected to industrial valves [see Figure 1a)] or intermediate support connected to [see Figure 1] necessary flange
Dimensions.
The necessary multi-turn drive connected to the driven parts of the drive form and size; a direct connection with the industrial valve flange connection surface dimensions and the reference value of the torque and thrust of the connecting flange. This document applies to the multi-turn valve drive and valve connection dimensions Note 1: The "valve" in this document includes "valve with intermediate support" [see Figure 1b)]. Note 2: When a multi-turn drive consists of a multi-turn drive and an integral multi-turn gearbox or direct stroke assembly, the connection is as specified in this document, see Fig. la) and Fig. 1b). When the multi-turn drive consists of a multi-turn drive with a separate multi-turn gearbox or straight stroke assembly, the connection of the multi-turn drive connected to the gearbox is as specified in this document. See Figure 1c) and Figure 1d)
2 normative reference documents
The contents of the following documents constitute the essential provisions of this document through the normative references in the text. Among them, note the date of the reference document, only the date of the corresponding version applies to this document; do not note the date of the reference document, its latest version (including all the revision of the list) applies to this document.
GB/T 196 Basic dimensions of common thread (GB/T 196-2003, ISO724:1993, MOD)
3 Terminology and definitions
The following terms and definitions are applicable to this document.
Actuator
A device used to operate the valve and connected to the valve.
Note: The device can be driven by manual, electric, pneumatic, hydraulic or a combination of these forms of power source, and its motion can be controlled by the amount of travel, torque or axial thrust.
4 Maximum torque and maximum thrust
The torque and thrust listed in Table 1 indicates the maximum torque and maximum thrust that can be transmitted through the flange of the drive and the driving parts.
The torque and thrust values specified in Table 1 are based on a bolt tensile stress of 290 MPa and a coefficient of friction between the flange faces of 0.2.
Different parameters will result in different values of transmitted torque and/or thrust. See Appendix A for calculation methods.
When selecting the flange size for a particular application, it is appropriate to consider the additional torque and/or thrust that may be generated on the stem due to size, safety factor, inertia or other similar factors. In particular, when selecting a flange, the selected drive should be calculated and considered in the output torque and (or) the maximum thrust generated by the thrust and the ability of the valve and drive to withstand these thrusts.
5 flange connection size
5.1 The flange connecting the driver to the valve should conform to the dimensions specified in Figure 2 and Table 2. The driver and the valve can be connected by studs or bolts. Such as the use of bolted connections, the bolt hole gee diameter should be matched with the size d, in Table 2. Thread according to the provisions of GB / T 196.
5.2 stud or bolt holes should be staggered drive the axis of symmetric distribution, as shown in Figure 3 and Table 3. The flange connecting the driver to the valve, should be used with positioning shoulder flange, the fit size according to Table 2 d; requirements. 535.4 The minimum value of h; in Table 2 applies to the material yield strength R greater than or equal to 200MPa flange, yield strength R less than 200MPa material should be agreed between the supply and demand. h; the minimum value should be greater than or equal to d. 5.5 size; is based on the provision of Adequate standoffs for placing nuts and bolt heads. The minimum value of this area is centered on the bolt hole. with (d;-d;)/2 as radius.
5.6 The flange size values specified in Table 2 are based on a maximum tensile stress of 290 MPa for the bolt. by mutual agreement between supply and demand, materials with different tensile strengths can be used without changing the bolt size, but the value of the transmitted torque will vary.
6 Flange code
Flange code (see 3.6) is determined according to Table 1
7 Dimensions of the driven and driven parts
7.1 General requirements
The dimensions of the driven and driven parts should be in accordance with the dimensions given in Table 4 - Table 8. The depth of engagement and the area between the contact surface of the driven part and the driven part should be considered to ensure that the stress caused by the contact does not exceed the capacity of the material of the driven component. In some cases, it is possible to use materials with superior mechanical properties and/or to reduce the output torque of the drive.
7.2 Dimensions of components that transmit both torque and thrust: Group A
Both torque and thrust transmission components structure as shown in Figure 4, the drive and valve (valve stem) connection shown in Figure 5, the size of the moving parts according to the provisions of Table 4.
7.3 Size of the component that transmits torque only: Group B
The size structure of group B components is shown in Figure 6, and the connection between the driver and the valve (valve stem) is shown in Figure 7, and the size of the moving parts is specified in Table 5.
7.4 Size of components for torque transmission only: Group C
The size structure of group C components is shown in Figure 8, and the dimensions of the actuators are as specified in Table 6.
7.5 Component size for torque transmission only: Group D
The dimensional structure of group D components is shown in Figure 9. The dimensions of the driving parts are as specified in Table 7.
7.6 Dimensions of components for transferring thrust only: straight stroke drive group (Group E) Except for the determination by mutual agreement between supply and demand, the structure of straight stroke drive group is shown in Figure 10, and the dimensions are as specified in Table 8 Dimensions di.d2, d;, h, and h, shall conform to the provisions of Chapter 5. The size of the penetration hole d; is selected according to d, in accordance with the provisions of Figure 2 and Table 2.
Appendix A (informative) calculation instructions
A.1 Calculation basis for flange torque and thrust values
For a given size of the flange, its maximum output torque and thrust value is determined by the method specified in this document. This document determines the principles of geometric design and size determination corresponding to each flange size.
The maximum output torque and thrust of each flange size are determined by the calculation method of formula (A.1) and formula (A.2), which can also be verified by the calculation method specified in other standards currently in effect.
At present, there are different calculation methods from this document in the industry to calculate the maximum output torque or thrust value of the flange
Contents of GB/T 12222-2023
Foreword
1 Scope
2 normative reference documents
3 Terminology and definitions
4 Maximum torque and maximum thrust
5 flange connection size
6 Flange code
7 Dimensions of the driven and driven parts
Appendix A (informative) calculation instructions