TY series conical ring groove regulating valve
key word：Heat exchange element
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Product description
TY series conical ring groove regulating valve
1. Introduction
1.1. Purpose
Ty series conical ring groove regulating valve is mainly used in the flow regulation of medium and low pressure difference, and is widely used in the flow regulation of grade I and II desuperheating water, continuous blowdown valve, make-up water, feed water and other systems of power plant.
1.2. Model meaning
T**##&&-$$@@/※※
T - control valve code
**----M is labyrinth type; K is orifice plate type; Y is cone type; L is shrouded type
##-------D is electric; Q is pneumatic; Y is hydraulic
&&---------1 represents balanced spool; 2 represents unbalanced spool; 3 represents pressurized spool
$$--- nominal pressure (MPa)
@@--------------Valve body material (see table 35-1 for specific code)
※※----------Nominal diameter (mm)
Table 35-1 material code of valve body
| Valve body material | Code |
| Grey cast iron | Z |
| Mallable iron | K |
| nodular cast iron | Q |
| Copper and copper alloys | T |
| Carbon steel | C |
| Cr Ni Ti steel | P |
| Cr Mo alloy steel | I |
| Cr Mo V alloy steel | V |
1.3. Structural features
The cone-shaped valve core series control valve has no regulating core package, the valve core and the valve stem are an integral whole, the head of the valve core is a cone-shaped structure, and there are many parallel ring grooves in the cone-shaped head, that is, the multi-stage cascade structure; When the medium enters from the valve body, it enters into the flow channel formed by the valve core and valve seat. After multi-stage depressurization, it flows out of the valve body and reaches the flow and pressure required by the power plant. TY series cone-shaped ring groove control valve is simple in structure and easy to maintain; the valve core and valve seat adopt different angles to form a line contact seal, with reliable sealing and closing performance.
The pressure reducing valve is small, and the flow control valve is small.
2. Main technical parameters and product appearance
2.1. Main technical parameters (see table 35-1)
Table 35-1 main technical parameters of Y Series conical ring groove control valve
| Item | Parameter |
| Nominal pressure（MPa） | 0～75（4500 Poung grade） |
| Nominal diameter (mm) | 20～500 |
| Applicable units | 50～1000MW units |
| Rated flow (t/h) | 0～3600 |
| Working temperature（℃） | ≤620 |
| Working medium | Water, steam, corrosive medium |
| characteristic curve | Linear, equal percentage, corrected equal percentage or other |
| Connection form of inlet and outlet | Flange connection or butt welding connection |
| Supporting actuator | Electric, pneumatic or other |
2.2. Product appearance (see figure 35-1)
3. Selection method
Generally, the selection of valves can refer to the recommended valve structure and type to determine the main technical conditions of the valve. According to the regulation requirements and the working temperature, pressure, density, noise and other conditions of the medium, not only the flow characteristics and flow coefficient should be considered For the inherent static characteristics of valves such as CV or KV, allowable pressure difference and regulation range R, the influence of the dynamic characteristics such as the distortion of flow characteristics caused by the changes of system resistance and operating conditions due to the different parallel and series positions of the valves installed on the actual pipeline must also be considered.
Figure 35-1 TY series dimensional ring groove
4. Scope of supply and general technical specifications
4.1. Scope of supply
It includes the valve body and the actuator matched with the valve. Other accessories, such as interface pipe, reducing joint, etc. are selected according to the user's requirements.
4.2. General technical specifications
Valve product design reference standard:
ASTM A182 / A182M-2008 Forged or rolled alloy steel nominal pipe flanges, forged pipe fittings, valves and parts for high temperature service
ASME B16.34-2004 Flanged, threaded and welded valves
ASME B16.10-2000 Valve structure length
ASTM A370-2003a Definite and test method for mechanical properties of steel products
ASTM A-388 / A 388M-2004 Standard Practice for ultrasonic inspection of heavy steel forgings
GB / T12224-2005 General requirements for steel valves
GB / T 10868-2005 Desuperheating and pressure reducing valve for power station
GB / T 13927-1992 General purpose valve pressure test
GB / T 5097-2005 Non destructive testing, penetrant testing and magnetic particle testing observation conditions
GB / T 19672-2005 Specification for pipeline valves
