Split type self-tightening sealing regulating valve cover with cooling fins
A self-tightening sealing and heat sink technology, applied in the field of regulating valves, can solve problems such as increasing complexity, and achieve the effects of convenient disassembly, favorable heat dissipation, and remarkable heat dissipation effect.
Active Publication Date: 2017-04-19
SHANGHAI POWER EQUIP RES INST
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Problems solved by technology
There are also structures where the heat sink and the valve cover are connected into one body by welding, which virtually increases the complexity of processing
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[0023] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0024] figure 2 Schematic diagram of the structure of the split type self-tightening sealing regulating valve bonnet with cooling fins provided in this embodiment, image 3 for figure 2 In the partial enlarged view, the split self-tightening sealing regulating valve bonnet with cooling fins is composed of a valve stem 1, a valve body bolt 2, a valve body nut 3, a lining ring 4, a small cooling fin 5, a valve cover 6, a larg...
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The invention provides a split type self-tightening sealing regulating valve cover with cooling fins. The split type self-tightening sealing regulating valve cover comprises a valve cover body and a valve cover flange which are independently machined in a split manner, the valve cover flange is arranged at the outer portion of the valve cover body, the valve cover body and a valve body are sealed through a sealing ring, and the valve cover flange and the valve body are fixed through a bolt; and backing rings and the cooling fins are arranged at the outer portion of the valve cover body at intervals. A pressure self-tightening sealing structure is arranged between the valve cover body and the sealing ring. Sealing slope angles of the valve cover body and the sealing ring are different, along with increase of the pressure of a medium in a valve, the higher the sealing specific pressure of the sealing face is, the better the sealing performance is, and the requirement for the specification of the bolt can be greatly reduced. The backing ring chamfering radius is larger than the cooling fin chamfering radius, contact between the cooling fins and the backing rings is better facilitated, and cooling is facilitated. By means of the split type self-tightening sealing regulating valve cover with the cooling fins, sealing at the position of the flange can be guaranteed, and effective and rapid cooling can be achieved to reduce the temperature at the position of a stuffing box; and in addition, machining is easy and convenient, cost is saved, and the service life is long.
Description
technical field [0001] The invention belongs to the technical field of regulating valves, in particular to a split self-sealing regulating valve under high temperature and high pressure working conditions. Background technique [0002] The existing regulating valve bonnet is in integral form, such as figure 1 As shown, under the condition of high temperature and high pressure, the connection between the bonnet and the valve body needs to use high-strength bolts, and the bonnet and the valve body are sealed by metal wound gaskets. The higher the medium pressure, the greater the gasket compression. , is also vulnerable to damage, resulting in leakage. This structure has higher requirements on the specifications of the flange bolts. At the same time, the sealing gasket is easy to be damaged after repeated assembly and disassembly, and it is more likely to cause leakage as the pressure increases. [0003] Due to the high temperature of the medium, there is no cooling fin at th...
Claims
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IPC IPC(8): F16K27/12F16K1/32F16J15/06
Inventor 龚胜泉李连翠迮晓锋周张荣王周杰黄维浩李小龙
Owner SHANGHAI POWER EQUIP RES INST