Main feed water isolating valve

A technology for isolating valves and main water supply, applied in sliding valves, valve details, valve devices, etc., to achieve the effects of compact structure, reduced possibility of failure, and improved seismic performance

Inactive Publication Date: 2018-04-20
SUFA TECH IND CNNC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It is difficult for traditional nuclear valves to meet the above three requirements under the required working conditions

Method used

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  • Main feed water isolating valve
  • Main feed water isolating valve

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Experimental program
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Embodiment Construction

[0012] as attached figure 1 And attached figure 2 As shown, a main water supply isolation valve includes a valve body 1, a clamp 2, a bracket 3, and an electric device 4, wherein the valve body 1 is a "T"-shaped three-way structure, and the "T"-shaped straight-through pipeline is connected to the nuclear power plant The main pipeline is connected, and the right-angle passage is provided with a clamp 2, which is a tightenable ring structure. The clamp 2 is provided with a bracket 3. 3 corresponding to the groove, the clamp 2 is provided with a fastening bolt, through which the clamp 2 can be tightened, so that the valve body 1, the clamp 2 and the bracket 3 are fixedly connected, and the bracket 3 is a round-shaped part. An electric device 4 is arranged above the support 3 .

[0013] In the channel of the valve body 1, a gate 5, a valve stem 6 and a stuffing box 7 are sequentially arranged in the direction of the clamp 2, wherein the gate 5 is composed of two parallel plate ...

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Abstract

The invention belongs to a nuclear-grade large-caliber high-pressure gate valve, namely, a main feed water isolating valve, and particularly relates to the main feed water isolating valve. The main feed water valve comprises a valve body, a clamp hoop, a support and an electric device; the valve body is of a T-shaped tee joint structure, a T-shaped straight-through pipeline communicates with a main pipeline of a nuclear power station, and the clamp hoop is arranged on a right-angle passage; the clamp hoop is of a ring-shaped structure capable of being tightened, the support is arranged on theclamp hoop, the inner wall of the clamp hoop is correspondingly provided with grooves corresponding to the valve body and the support, fastening bolts are arranged outside the clamp hoop, wherein theclamp hoop can be tightened through the fastening bolts so that the valve body, the clamp hoop and the support can be fixedly connected; and the support is a cylindrical part, and the electric deviceis arranged on the support. The main feed water isolating valve has the remarkable effects that when a main steam pipeline of the nuclear power station is broken, the main feed water isolating valve capable of meeting requirements is provided to enable a main water feed pipeline to be rapidly isolated.

Description

technical field [0001] The invention belongs to a nuclear-grade large-diameter high-pressure gate valve, that is, a main water supply isolation valve, and specifically relates to a main water supply isolation valve. Background technique [0002] The main water supply isolation valve is used to quickly isolate the main water supply pipeline when there is a breach in the main steam pipeline of the nuclear power plant. system and its accessories. This valve is a key valve for nuclear power plants. In the past, all such valves relied on imports, with high cost and long transportation cycle. Once the valve parameters need to be changed, the production cycle of foreign manufacturers is very long. [0003] The requirements for the main feedwater isolation valve of the new generation of nuclear power include: 1. The main feedwater isolation valve must realize rapid opening and closing within 20s; 2. The natural frequency of the entire valve assembly shall not be lower than 33Hz; 3....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/04F16K3/02F16K27/04
CPCF16K3/0281F16K27/044F16K31/04
Inventor 刘平汤晓刚高志岗李军业王兰群严新虹任利杰
Owner SUFA TECH IND CNNC
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