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Middle open type translation double-sealed rectangular gate valve

A double-seal and split-open technology, which is applied in the direction of sliding valves, valve devices, engine components, etc., can solve the problems that one-way sealing cannot be guaranteed, and achieve the effect of large specifications, small opening torque and short service life

Active Publication Date: 2017-12-26
HUBEI HONGCHENG GENERAL MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The gate plate of traditional blind valve can only move radially left and right. The gate plate and the valve seat are actually relatively fixed structures, which can only achieve one-way sealing, and the one-way sealing cannot be guaranteed after such a large diameter. After the gate is closed, it can move forward and backward along the shaft, and move forward or backward according to the direction of sealing, and stick to the valve seat to achieve bidirectional sealing

Method used

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  • Middle open type translation double-sealed rectangular gate valve
  • Middle open type translation double-sealed rectangular gate valve
  • Middle open type translation double-sealed rectangular gate valve

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Embodiment Construction

[0024] The present invention will be further described with reference to the accompanying drawings and embodiments.

[0025] Figure 1-6 Middle: There are two rows of 20 rollers 6 evenly distributed on the base 1. The valve body 2 is a rectangular frame. One end is respectively connected with the left and right sides of the valve body 2, the left valve plate 7 and the right valve plate 8 are rectangular frames, the left valve plate 7 and the right valve plate 8 are in the valve body 2 and respectively on both sides of the valve body 2, the two The other end of each driving device 3 is respectively connected with the left valve plate 7 and the right valve plate 8, the upper and lower parts of the valve body 2 are respectively connected with a shift fork driving device 12, and the front and rear parts of the inner cavity of the valve body 2 are respectively connected with a The sealing ring 9 is evenly distributed along the edge of the inner cavity of the valve body 2 and is co...

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Abstract

The invention relates to a middle open type translation double-sealed rectangular gate valve. A right valve plate and a left valve plate which are opened or closed through rectangular frames are installed in a rectangular valve body, and the right and left valve plates are driven to move by a driving device installed on the valve body, and limited by shifting forks at the tops and bottoms of the right and left valve plates and limit rollers; and flow channel compensation is performed by virtue of a flow channel compensation device installed on the edge of an inner cavity of the valve body and flow channel compensation pieces connected to the flow compensation device, while a front sealing ring and a rear sealing ring of the inner cavity of the valve body as well as the front and rear sealing rings in the closure position of the right and left valve plates constitute bidirectional sealing. The rectangular gate valve provided by the invention is a valve with large size and zero leakage, the flow channel clearance is smaller than 5 mm, and the valve is applicable for working conditions of high flow rate and strong vibration.

Description

technical field [0001] This invention relates to gate valves. Background technique [0002] In response to the needs of my country's largest caliber continuous supersonic wind tunnel to be built by the China Aerodynamic Research and Development Center, a rectangular gate valve with super large caliber, complete flow channel and two-way sealing has been developed. Rectangular gate valves are installed at the entrance and exit of the wind tunnel test section. The diameter of the inlet valve is about 12 meters X 4.8 meters, and the outlet valve is about 6.8 meters X 6.8 meters. The main function is to cut off the medium before and after the test section when the staff enters the test section to adjust the equipment, so as to ensure the normal pressure of the test section. The medium of the wind tunnel device is gas, and the maximum speed reaches Mach 1.6. During the test, it is necessary to ensure that the flow channel is complete and smooth, and the maximum gap of the flow ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/02F16K3/30F16K3/316
CPCF16K3/029F16K3/30F16K3/3165
Inventor 王洪运张云海杨呈
Owner HUBEI HONGCHENG GENERAL MACHINERY
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