Multichannel sealing all-welded flat sluice valve
A flat gate valve, fully welded technology, applied in the direction of shaft seal, sliding valve, valve details, etc., can solve the problems of potential safety hazards, valve seal failure, failure to meet double cut-off and discharge, etc.
Active Publication Date: 2011-05-18
BAOYI GROUP
View PDF7 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the slab gate valve is used in underground pipelines, the seal between the valve body and the bonnet, and between the two ends of the valve body and the pipeline adopts the flange-gasket type. When the gasket fails to cause medium leakage, it is difficult to find out in time. processing, leaving a security risk
The material of the sealing ring on the valve seat is usually made of organic synthetic plastic, which is a soft-hard sealing pair composed of the gate plate. During the valve switch process, the high-speed fluid is easy to wash and damage the plastic sealing ring on the valve seat, so that the valve is sealed. fail, not working
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
[0021] Such as Figure 1-Figure 4 The multi-channel sealed all-welded flat gate valve shown includes a valve body 1, a bonnet 2 connected to the valve body 1, a valve stem 3 inserted into the valve body 1 from the bonnet 2, and a linkage with the valve stem 3 The gate plate 4 and the driving mechanism 5 for driving the valve stem 3, the driving mechanism 5 can be a hand wheel or a motor; a sealing assembly 6 is provided between the valve stem 3 and the valve cover 2, and the sealing assembly 6 here is a fireproof sealing ring 61 and O-shaped rubber sealing ring 62, the setting of the fire-proof sealing ring 61 and the O-shaped rubber ring 62 makes the valve stem 3 and the valve cover 2 not only have a fireproof function but also have a double sealing function to prevent the fire source from being inside the valve body 1. When burning, the fire source diffuses from the valve cover 2 to the outside; the valve body 1 is provided with a medium inlet channel 11, a medium outflow ch...
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 flat sluice valve, in particular to a multichannel sealing all-welded flat sluice valve. The multichannel sealing all-welded flat sluice valve comprises a valve body, a valve cover, a valve rod, a flashboard and a drive mechanism, wherein a sealing assembly is arranged between the valve rod and the valve cover; the valve body is provided with a medium inflow channel, a medium outflow channel, a connecting cavity and a discharge channel, wherein valve seats are arranged between the connecting cavity and the medium outflow channel and between the connecting cavity and the medium inflow channel; the valve cover and the valve body are welded and hermetically connected; each valve seat comprises a main valve seat and an auxiliary valve seat, wherein the main valve seat comprises a valve body sealing end and a flashboard sealing end, the auxiliary valve seat comprises an auxiliary valve seat flashboard sealing end and a brake press end positioned between the auxiliary valve seat flashboard sealing end and the valve body, and main and auxiliary valve seat sealing ends are arranged between the main valve seat and the auxiliary valve seat; and a press spring is arranged between the brake press end of the auxiliary valve seat and the valve body. By adopting the technical scheme, the invention provides the multichannel sealing all-welded flat sluice valve which has good fireproof and sealing properties.
Description
technical field [0001] The invention relates to a flat gate valve, in particular to a multi-channel sealed all-welded flat gate valve. Background technique [0002] Existing slab gate valves for oil and gas pipelines are composed of valve body, valve seat, gate plate, valve cover, valve stem and driving device. The rotary motion of the valve stem drives the gate plate to move up and down to control the opening and closing state of the valve. The valve body is provided with an inflow channel and an outflow channel for the flow of the working medium, and a connecting cavity where a gate plate can be placed is provided between the inflow channel and the outflow channel, and a valve seat is set at the connection cavity between the inflow channel and the outflow channel and the valve body. The seat is a soft sealing surface embedded in synthetic plastic material and its axis overlaps with the axis of the inlet and outlet channels of the valve body. The valve seat can move relativ...
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 Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/20F16K27/10F16K27/04F16K27/12F16K41/04
Inventor 陈佑军张晓忠杜仁飞杨兆倩
Owner BAOYI GROUP