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Power station gate valve

A technology for gate valves and power stations, applied in sliding valves, valve details, valve devices, etc., can solve problems such as poor sealing, and achieve the effects of improving sealing, increasing sealing, and uniform force

Pending Publication Date: 2020-05-08
JIANGSU HIGH & HIGH PRESSURE VALVE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing power station gate valves have shortcomings such as poor sealing performance after being used for a long time

Method used

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  • Power station gate valve
  • Power station gate valve

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Embodiment 1

[0020] see figure 1 , the present invention provides the following technical solutions: power station gate valve, including valve body 1, bracket 11 and electric device 12, valve body 1 is a pressure self-sealing structure without bonnet, valve body 1 includes sealing ring 6, four open rings 7 and stuffing box 8. A bonnet 5 is set under the sealing ring 6, and the sealing ring 6 is set between the stuffing box 8 and the valve body 1, and the stuffing pressure plate 10 that engages with the stuffing box 8 is set above the stuffing box 8, and the stuffing box 8 There is a packing gland 9 between the packing plate 10, the stuffing box 8 is provided with a packing hole, and the inner wall of the packing hole is provided with a V-shaped composite packing layer, and the inner bottom of the valve body 1 is symmetrically provided with a valve seat 2, and the valve seat 2 The gate plate 3 used in cooperation with each other is provided at the middle position, the other end of the gate ...

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Abstract

The invention belongs to the technical field of valves, and particularly relates to a power station gate valve. The power station gate valve comprises a valve body, a bracket and an electric device; the valve body comprises a sealing ring, a pendant collet and a packing box, a valve cover is arranged on the lower part of the sealing ring, the sealing ring is arranged between the packing box and the valve body, a packing pressing plate which is mutually clamped with the packing box is arranged on the upper part of the packing box, a packing pressing sleeve is arranged between the packing box and the packing pressing plate, a packing hole is formed in the packing box, a V-shaped combined packing layer is arranged on the inner wall of the packing hole, valve seats are symmetrically arranged at the bottom end in the valve body, a gate plate mutually matched with the valve seats for use is arranged in the middles of the valve seats, the other end of the gate plate is fixedly connected witha valve rod, the electric device is arranged at the upper end of the valve body, and the bracket is fixedly connected with the valve body and the electric device. During packing and pressing, force bearing is even, and airtightness of a packing is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to gate valves for power stations. Background technique [0002] Power station gate valves are also called special valves for power stations. They are mainly used in the pipelines of various systems in thermal power stations to cut off or connect pipeline media. Applicable media: water, steam and other non-corrosive media. The characteristics of power station valves compared with other valve products It is high temperature and high pressure, unique self-sealing design, the higher the pressure, the more reliable the seal. Compared with other valve products, the power station gate valve is characterized by high temperature and high pressure. Valve low. Due to the special performance and technical characteristics and working conditions, the product has also formed characteristics that cannot be replaced by other products. The pressure self-tightening seal is adopted, the two ends of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K41/02F16K3/12
CPCF16K41/02F16K3/12
Inventor 夏文龙华秀明梅玲张舟熊春林刘醒
Owner JIANGSU HIGH & HIGH PRESSURE VALVE CO LTD
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