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A control valve labyrinth disc assembly structure with guide sleeve

A technology of guide sleeve and combined structure, which is applied in the field of regulating valves, can solve the problems of disc matrix material influence, low welding process efficiency, and reduced disc life, so as to reduce scouring damage, simplify processing and assembly process, and save maintenance cost effect

Active Publication Date: 2019-12-31
SHANGHAI POWER EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high price of vacuum brazing equipment and brazing process, and the low efficiency of the welding process, if the brazing temperature is not well controlled, it may also have a great impact on the disc matrix material, thereby reducing the life of the disc

Method used

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  • A control valve labyrinth disc assembly structure with guide sleeve
  • A control valve labyrinth disc assembly structure with guide sleeve
  • A control valve labyrinth disc assembly structure with guide sleeve

Examples

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Embodiment Construction

[0030] 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.

[0031] Such as figure 2 As shown, a flange 11 with a height of 0.5 mm is processed on the upper part of the labyrinth disc 1 of the regulating valve, and a disc groove 12 matching the flange is opened on the lower part. This structure can make adjacent discs fixed by the cooperation of the concave-convex grooves, which has good alignment and reduces the brazing process between the disc layers. Processing costs can be reduced...

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Abstract

The invention provides an adjusting valve labyrinth disc combined structure with a guide sleeve. The structure comprises the guide sleeve, and a plurality of adjusting labyrinth type discs are stacked outside the guide sleeve in a sleeving manner. The adjacent adjusting labyrinth type discs are fixed through cooperation of concave grooves and convex grooves. Sleeve grooves allowing fluid to flow are formed in the positions, flush with the position of labyrinth flow channels on the mounted adjusting labyrinth type discs, of the guide sleeve, and through flow holes are formed in the sleeve grooves. The discs are directly restrained and fixed through the self structures and the guide sleeve, the processing and assembling process is simplified, and cost is reduced. The discs are movably restrained, only the damaged discs are replaced in the repair process, and the repair cost is reduced. Hard alloy is overlaid or sprayed to the inner wall of the sleeve, and the overall service life of a valve element assembling part is prolonged. On the premise of guaranteeing that that the adjusting labyrinth type disc assembling part meets flow performance, the assembly precision is improved, the valve production efficiency is improved, the service life of the assembling part is prolonged, and the production and repair cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of regulating valves, in particular to a labyrinth disc combination structure of a regulating valve with a guide sleeve. Background technique [0002] Such as figure 1 As shown, the existing control valve labyrinth disk combination sleeve is mainly formed by stacking one layer of disks, and between layers ( figure 1 Middle M) are connected together by brazing or other welding. Since the lower labyrinth disc is easily damaged by erosion or cavitation during the use of the valve, but the discs are welded as a whole, once the lower disc is damaged, the entire labyrinth sleeve must be replaced, which causes The waste of the upper complete disc is eliminated. [0003] Additionally, due to figure 1 The inner hole of the middle disc also has a guiding effect on the valve stem, so the machining and assembly accuracy of the inner hole of the labyrinth sleeve is extremely high during the assembly process, which al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K47/08F16K1/32
CPCF16K1/32F16K47/08
Inventor 王周杰龚胜泉李连翠迮晓锋周张荣黄维浩李小龙
Owner SHANGHAI POWER EQUIP RES INST
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