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Shuttle-type high-temperature and high-pressure welding check valve

A high temperature and high pressure, check valve technology, applied in valve details, control valves, valve devices, etc., can solve the problems of inability to install at any angle, leakage of special media, limited applicable environment, etc., to achieve simple structure, small opening and closing resistance, Guaranteed smoothness

Inactive Publication Date: 2011-11-23
WINJET HIGH TECH INVESTMENT BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing welded check valve is a swing-type welded check valve. Due to the wear and displacement of the lifting lug, the valve disc hits the valve seat, causing vibration and leakage of special media such as high temperature and high pressure, resulting in safety accidents.
The swing welded check valve cannot be installed at any angle, and the applicable environment is limited

Method used

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  • Shuttle-type high-temperature and high-pressure welding check valve
  • Shuttle-type high-temperature and high-pressure welding check valve
  • Shuttle-type high-temperature and high-pressure welding check valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The middle cavity of the valve body 1 is connected with the joints at both ends of the axial direction, and a welding groove 14 is provided on the outer wall of the port of the joint. The inner wall of the left end joint is threadedly connected with the outer wall of the maximum diameter of the valve sleeve 2. The valve sleeve moves to the right until the end of the left end joint is blocked by a step and stops in place; there is an inner step at the connection between the right end joint and the middle cavity, and the front support 9 is the valve seat , Support integrated components, the front support 9 is installed in the left hole of the inner step, the ring of the front support 9 is the valve seat, the small hole of the front support 9 supported by the ribs is the axial center hole of the front support, and the upstream fluid flows through the ribs. Space circulation between articles. The outer diameter of the ring of the front support 9 is smaller than the inner dia...

Embodiment 2

[0023] The middle cavity of the valve body 1 has an overhaul hole 11 and a hole cover 10 connected by flanges and bolts. The axial ends of the middle cavity have left-end threads, right-end steps, left-end threads and the maximum straightness of valve sleeve 2.

[0024] Threaded connection on the outer wall of the diameter. The valve sleeve 2 is fixed on the left wall of the middle cavity through a locking pressure block 4 and a locking screw (or pin) 3. The front support 9 is connected to the wall hole on the left side of the right end step, and is fixed on the right wall of the middle cavity by a locking pressure block 7 and a locking screw (or pin) 8. The rest of the structure is the same as the first embodiment.

[0025] The steps of the disassembly and assembly process of the present invention are as follows:

[0026] a). Disassembly process:

[0027] 1. Take out the manhole cover 10: remove the valve sleeve locking screw (or pin) 3 and the valve sleeve locking pressure block ...

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Abstract

The invention relates to a shuttle-type high-temperature and high-pressure welding check valve and solves the problems that the welded check valve cannot be installed at any angle and leakage happens easily. In the shuttle-type high-temperature and high-pressure welding check valve, a middle cavity of a valve body (1) is connected with a coupling at two axial ends, and an outer wall of a port of the coupling is provided with a welding groove (14); the two axial ends of the middle cavity and a connecting passage of the coupling are fixedly connected with a valve bush (2) and a front bearing (9) respectively; a valve flap (5) is in rigid connection with a front shaft (12) and a back shaft (13) which are coaxial; and the front shaft (12) is in movable fit with an axial central hole of the front bearing (9), the back shaft (13) is in movable fit with an axial central hole of the valve bush (2), and the back shaft (13) is sleeved with a spring (6).

Description

Technical field: [0001] The present invention is related to check valves on high-temperature and high-pressure medium channels, and is especially related to welding check valves. Background technique: [0002] The existing welded check valve is a swing welded check valve. Due to the wear and displacement of the lifting lugs, the disc knocking on the valve seat causes vibration and leakage of special media such as high temperature and high pressure, causing safety accidents. The swing welded check valve cannot be installed at any angle, and the applicable environment is limited. Summary of the invention: [0003] The purpose of the present invention is to provide a simple structure, no leakage, can be installed at any angle, installation and disassembly are convenient, valve clack and valve seat can be taken out, combined in free space, using safe and reliable shuttle high temperature and high pressure welding check valve. [0004] The present invention is realized as follows: [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K15/06F16K27/02
CPCF16K15/063F16K27/0209
Inventor 曾祥炜
Owner WINJET HIGH TECH INVESTMENT BEIJING
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