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Tube explosion closing valve

A technology for closing valves and squibs, applied in safety valves, balance valves, valve devices, etc., can solve problems such as failure to close the squib shut-off valve in time, variable medium pressure, and easy failures, etc., and achieve the flexibility of closing pressure High, improve reliability, avoid the effect of valve closing water hammer

Pending Publication Date: 2018-03-30
ANHUI REDSTAR VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the closing pressure of the existing squib shut-off valve is factory-set, but the medium pressure in the pipeline is variable and uncontrollable, so the existing squib shut-off valve has poor adjustability and reliability. It is relatively low, prone to failures, and it may happen that the burst pipe shut-off valve fails to close in time; it may also occur that the valve is closed without bursting the pipe

Method used

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Embodiment Construction

[0023] Combine below Figures 1 to 3 The structure and invention of the squib shut-off valve of the present invention are described.

[0024] Such as figure 1 As shown, a squib shut-off valve includes a valve body 1, a water inlet channel 2 and an outlet channel 3 arranged at both ends of the valve body 1, a support plate 4 respectively arranged in the water inlet channel 2 and the water outlet channel 3, and a The valve disc 5 inside the valve body 1 , the driving mechanism arranged at both ends of the valve disc 5 and controlling the opening and closing of the valve disc 5 , the valve seat 6 sealingly matched with the valve disc 5 and the sealing ring 7 installed on the valve seat 6 . The valve seats 6 are respectively arranged on the water inlet channel 2 and the water outlet channel 3 to cooperate with the valve disc 5 .

[0025] The valve body 1 is symmetrically arranged in two identical structures and fixedly connected by several bolts.

[0026] Both the water inlet c...

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Abstract

The invention provides a tube explosion closing valve. The tube explosion closing valve comprises valve bodies, a water inlet channel, a water outlet channel, valve clacks arranged in the valve bodiesand drive mechanisms arranged at the two ends of the valve clacks. Each drive mechanism comprises a cylinder body connected with the corresponding valve clack, a piston mounted in the cylinder body and a control guide valve communicating with the cylinder body. Each control guide valve comprises a guide valve body mounted on the corresponding valve body, a water inlet formed in the guide valve body, a water outlet, multiple communicating openings communicating with the corresponding cylinder body, an adjusting valve mounted on the water outlet and used for controlling on-off of the water outlet, needle valves each mounted on the corresponding communicating opening and a plug movably mounted on the water inlet, wherein the water inlet communicates with the communicating openings. The valveclacks are in contact with the pistons. According to the tube explosion closing valve, the whole valve clacks are used as a medium for inducting flowing speed changes, after being amplified, the change feature of the flowing speed of the medium is converted into a pressure signal, the tube explosion feature is inducted through the pressure changes generated after conversion, the induction manneris high in sensitivity and reliability, and the response condition of tube explosion closing is sufficient and reliable.

Description

technical field [0001] The invention relates to the field of valves, in particular to a squib shut-off valve. Background technique [0002] Due to the long water supply pipeline of the urban water supply project, when a pipe burst occurs in the pipeline, the on-duty personnel should inspect the site. would lead to increased losses. The squib shut-off valve is installed on the main water delivery pipe. Under normal conditions, the squib shut-off valve is open; when a squib accident occurs in the pipeline, the squib shut-off valve is automatically closed to cut off the squib pipeline to prevent the loss of the squib. expansion. At present, the closing pressure of the existing squib shut-off valve is factory-set, but the medium pressure in the pipeline is variable and uncontrollable, so the existing squib shut-off valve has poor adjustability and reliability. If it is relatively low, it is prone to failure. It may happen that the burst pipe shut-off valve fails to close in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/00
CPCF16K17/00
Inventor 何锐张斌韩安伟
Owner ANHUI REDSTAR VALVE
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