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Dual-seal ball valve seat compact in structure

A double-sealed, compact structure technology, applied to the valve housing structure, valve details, valve device, etc., can solve the problems of high manufacturing cost and complex structure, and achieve the effects of reducing manufacturing cost, saving volume, and simple and reliable detection methods

Active Publication Date: 2018-12-11
SICHUAN KAITZ VALVE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, a technical solution adopted by the present invention is to provide a double-sealed ball valve seat with a compact structure to solve the technical problems of high manufacturing cost and complicated structure

Method used

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  • Dual-seal ball valve seat compact in structure
  • Dual-seal ball valve seat compact in structure

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] Such as Figure 1 ~ Figure 2 As shown, a compact double-sealed ball valve seat is characterized in that it includes a valve body 1 with a channel 2, a ball 3 inside the valve body 1, and a limit ring 17; the inner wall of the channel 2 is provided with a The outer valve seat 4 and the inner valve seat 5 between the ball 3 and the valve body 1, the outer valve seat 4 is arranged at one end of the inner valve seat 5 close to the ball 3; one end of the outer valve seat 4 is formed against the ball 3 The hard sealing surface 6, the other end is against the end face of the inner valve seat 5; the outer valve seat 4 has a circumferential protrusion, and one end of the limit ring 17 is stuck on the protrusion to limit the inner valve seat 5 Axial displacement, the other end is fixedly connected with the inner valve seat 5.

[0025] The double sealing structure of the inner valve seat 5 and the outer valve seat 4 is adopted to ensure the sealing reliability and have better sea...

no. 2 example

[0027] Such as Figure 1 ~ Figure 2 As shown, a compact double-sealed ball valve seat is characterized in that it includes a valve body 1 with a channel 2, a ball 3 inside the valve body 1, and a limit ring 17; the inner wall of the channel 2 is provided with a The outer valve seat 4 and the inner valve seat 5 between the ball 3 and the valve body 1, the outer valve seat 4 is arranged at one end of the inner valve seat 5 close to the ball 3; one end of the outer valve seat 4 is formed against the ball 3 The hard sealing surface 6, the other end is against the end face of the inner valve seat 5; the outer valve seat 4 has a circumferential protrusion, and one end of the limit ring 17 is stuck on the protrusion to limit the inner valve seat 5 Axial displacement, the other end is fixedly connected with the inner valve seat 5.

[0028] A sealing ring 10 is arranged between one end of the inner valve seat 5 and the sphere 3, the end face of the sealing surface is a soft sealing su...

no. 3 example

[0030] Such as Figure 1 ~ Figure 2 As shown, a compact double-sealed ball valve seat is characterized in that it includes a valve body 1 with a channel 2, a ball 3 inside the valve body 1, and a limit ring 17; the inner wall of the channel 2 is provided with a The outer valve seat 4 and the inner valve seat 5 between the ball 3 and the valve body 1, the outer valve seat 4 is arranged at one end of the inner valve seat 5 close to the ball 3; one end of the outer valve seat 4 is formed against the ball 3 The hard sealing surface 6, the other end is against the end face of the inner valve seat 5; the outer valve seat 4 has a circumferential protrusion, and one end of the limit ring 17 is stuck on the protrusion to limit the inner valve seat 5 Axial displacement, the other end is fixedly connected with the inner valve seat 5.

[0031] A sealing ring 10 is arranged between one end of the inner valve seat 5 and the sphere 3, the end face of the sealing surface is a soft sealing su...

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Abstract

The invention relates to a dual-seal ball valve seat compact in structure and belongs to the technical field of ball valves. The dual-seal ball valve seat compact in structure is characterized by comprising a valve body with a channel, a ball body arranged in the valve body and a limiting ring, wherein the inner wall of the channel is provided with an outer valve seat and an inner valve seat whichare located between the ball body and the valve body, the outer valve seat is arranged at the end, close to the ball body, of the inner valve seat, one end of the outer valve seat abuts against the ball body and forms a hard seal face, the other end of the outer valve seat abuts against the end face of the inner valve seat, the outer valve seat is provided with an annular protrusion, one end of the limiting ring is clamped to the protrusion to limit axial displacement of the inner valve seat, and the other end of the limiting ring is fixedly connected with the inner valve seat. The dual-sealball valve seat compact in structure has the beneficial effects that the dual-seal structure of the inner valve seat and the outer valve seat is adopted, the seal reliability is guaranteed, an more excellent seal performance is achieved; the outer valve seat is fixed through the limiting ring, the structure is compact, the volume of the outer valve seat is greatly reduced, and the manufacturing cost is reduced; and assembling and disassembly are convenient, and maintenance is facilitated in a later period.

Description

technical field [0001] The invention relates to the technical field of ball valves, in particular to a compact double-sealed ball valve seat. Background technique [0002] Ball valve is a very commonly used technology, often used in petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmaceutical, water conservancy, electric power, municipal, steel and other industries, to cut off or connect the medium in the pipeline. [0003] After the ball valve is installed on the pipeline, it is necessary to regularly detect the leakage of the ball valve, but currently only the external leakage can be detected, and there is no real-time and effective calibration method for the internal leakage of the ball valve. This is because the ball valve has two seals on the upper and lower valve seats, and the leakage of the upper valve seat can only be detected by releasing the pressure in the middle cavity. During this process, the ball valve is in a fully closed state,...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/20F16K27/08
CPCF16K5/0663F16K5/0684F16K5/201F16K27/08
Inventor 袁伟
Owner SICHUAN KAITZ VALVE MFG
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