Novel upper-mounted low-temperature ball valve
A top-loading, low-temperature technology, applied to valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as affecting sealing performance, wear of Lip-Seal lip seals, etc., to improve sealing performance, avoid scratches, The effect of avoiding wear
Pending Publication Date: 2019-04-26
浙江伯特利科技股份有限公司
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The axial retreat gaps of existing products are all set in the installation cavity of the Lip-Seal lip seal ring, causing the Lip-Seal lip seal ring to slide axially in its installation cavity under the action of medium pressure, especially the valve body The two-way Lip-Seal lip seal used in the valve seat on the outlet side slides back and forth under the pressure of the medium, which causes the wear of the Lip-Seal lip seal and affects the sealing performance
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0009] Such as figure 1 , figure 2 The new top-entry low-temperature ball valve shown includes valve body 7, valve seat, ball 1, and valve cover. The valve body 7 has an integrated structure. cavity, the ball 1 and the valve seat adopt a top-loading structure, that is, the ball 1 and the valve seat are loaded into the inner cavity of the valve body 7 from the middle cavity, the valve seat is a floating valve seat, and the floating valve seat includes a sealing seat 2, a compression ring 3, Spring seat 4, Lip-Seal lip seal ring 6, Lip-Seal lip seal ring 6 is installed between the radial outer circular surface of seal seat 2 and the inner circular wall of valve body 7 channel, the valve seat adopts DIB-2 structure, That is, the upstream inlet adopts a single-piston effect valve seat, and the downstream outlet adopts a double-piston effect valve seat to ensure that the valve has two reliable seals. The compression ring 3 is installed on the external thread of the outer circle ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a novel upper-mounted low-temperature ball valve which comprises a valve body, a valve seat, a ball body and a valve cover. The valve body is of an integrated structure. The ball body and the valve seat adopt upper-mounted structures. A floating valve seat is adopted as the valve seat and comprises a sealing seat, a pressing ring, a spring seat and a Lip-Seal lip sealing ring, and a DIB-2 structure is adopted by the valve seat. The novel upper-mounted low-temperature ball valve is characterized in that the two ends of the Lip-Seal lip sealing ring are mounted between the third radial end face of the spring seat and a second radial step of the inner wall of a valve body channel in a pressing manner; and an axial retreat gap is arranged between the first radial end face of the spring seat and the radial end face of the sealing seat. The situation that the Lip-Seal lip sealing ring is worn due to axial sliding is avoided, and sealing reliability is improved.
Description
technical field [0001] The invention belongs to the field of valves, in particular to a top entry ball valve. The invention is especially suitable for low temperature working conditions. Background technique [0002] The structure of top entry cryogenic ball valve includes valve body, valve seat, ball, valve cover and valve stem. At present, Lip-Seal lip seals are generally used between the seat and the valve body of the top-entry low-temperature ball valve at home and abroad. Large axial backlash. The axial retreat gaps of existing products are all set in the installation cavity of the Lip-Seal lip seal ring, causing the Lip-Seal lip seal ring to slide axially in its installation cavity under the action of medium pressure, especially the valve body The two-way Lip-Seal lip seal used in the valve seat on the outlet side slides back and forth under the pressure of the medium, which causes the wear of the Lip-Seal lip seal and affects the sealing performance. Contents of ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F16K5/20
CPCF16K5/201
Inventor 尚玉来李平张海兰
Owner 浙江伯特利科技股份有限公司