CN205937944U - Depressurization mechanism of valve - Google Patents

Depressurization mechanism of valve Download PDF

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Publication number
CN205937944U
CN205937944U CN201620863833.5U CN201620863833U CN205937944U CN 205937944 U CN205937944 U CN 205937944U CN 201620863833 U CN201620863833 U CN 201620863833U CN 205937944 U CN205937944 U CN 205937944U
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CN
China
Prior art keywords
valve
pressure
pipeline
intake line
output pipeline
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Active
Application number
CN201620863833.5U
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Chinese (zh)
Inventor
黄静生
黄敏
周勇
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Yancheng Sheng Ke Ball Valve Co Ltd
Original Assignee
Yancheng Sheng Ke Ball Valve Co Ltd
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Publication date
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Priority to CN201620863833.5U priority Critical patent/CN205937944U/en
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Publication of CN205937944U publication Critical patent/CN205937944U/en
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Abstract

The utility model provides a depressurization mechanism of valve. To cause the attacking media (like heavy oil, toxic gas and so on) of external emission to retrieve because of automatic pressure release, deliver to unnecessary medium the upper reaches pipeline of valve in, not only save the resource, prevented still that attacking media from causing to pollute to the environment to cause unexpected injury, not only environmental protection but also safe energy -conservation with harmful substance.

Description

A kind of pressure relief mechanism of valve
Technical field
This utility model is related to a kind of safe practice of ball valve, particularly a kind of pressure relief mechanism of valve.
Background technology
Since reform and opening-up, national economy rapid growth, " scientific and technical innovation, autonomous innovation " has become current industrial development Main flow, China's industry progressively develops to the direction of intensive style, energy-saving and emission-reduction, low-carbon high-efficiency.Traditional double isolation and drain valve (API6D) being divided into two valve seats of pipeline valve, to be two way seal (double isolation) type (DIB-1) and valve seat be runner Side one-way sealing, and another valve seat is two way seal type (DIB-2) it is well known that valve is in fluid delivery system Control parts, have cut-off, regulation, water conservancy diversion, prevent the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief, be widely used in industry In production;Due to valve pass in and out both sides sealing property excellent, enter valve in intracavity medium would generally be closed wherein, In the presence of exterior-heat, the medium temperature of middle intracavity can be made to raise, heat can be gradually become by cold conditions in the medium of middle intracavity by closure State, liquid may vaporize, and gas expands rapidly, cannot increase yet with middle cavity volume, leads in valve cavity pressure drastically Rise, make cavity pressure in valve at double or times over nominal pressure, so, not only affect normally-open, the serious feelings of valve Pressure part, opening tool and the executor of valve can be led under condition impaired, so needing to install pressure relief mechanism, tradition in valve The pressure release mode of DIB-1 valve be that a kind of automatic decompression valve, the principle of this kind of relief valve and safety are installed on pipeline valve body Valve is similar.When valve is closed, the pressure in valve pocket is led to suddenly to raise because of the impact of the extraneous factors such as temperature, When the set pressure of pressure rise to automatic decompression valve, valve element is opened, and the pressure in valve pocket is down to a safety value effectively. But there is an obvious defect in this pressure release mode:When valve internal endoplasm is harmful substance, easily natural environment is produced Raw pollution, or even unexpected injury can be caused.Scientific research personnel in China's same industry constantly going to explore, studying although obtaining Certain progress, but remain the technical barrier not yet overcoming in actual applications.
Content of the invention
The purpose of this utility model is to overcome above deficiency, provides a kind of pressure relief mechanism of valve.Will be because of releasing pressure automatically Cause the hazardous medium (as heavy oil, toxic gas etc.) externally discharging to be reclaimed, unnecessary medium is delivered to valve In upstream line, not only save resources, prevent hazardous medium to cause unexpected injury to environment and harmful substance, Not only environmental protection but also energy-saving safe.
This utility model solves its technical problem and be employed technical scheme comprise that:Containing in valve body, upstream end flanges, valve body Chamber, pressure output pipeline, relief valve, pressure intake line, pressure output pipeline are that drawing in valve pocket oil leak hole is defeated Go out pipeline, and connect a loose joint pipe joint, pressure intake line is to bore one and pressure output in the upstream end flange of valve body The parallel screwed hole of pipeline, and connect a loose joint pipe joint, relief valve is arranged in pressure output pipeline and pressure intake line Between position, and connect pressure output pipeline and pressure intake line, form a kind of pressure relief mechanism of valve.
Know-why of the present utility model is:A kind of pressure relief mechanism of valve, employs theory of mechanics technology, traditional Connect a pressure output pipeline at the relief hole of DIB-1 valve, be provided with one and pressure output pipeline in the upstream position of valve Parallel pressure intake line, and connect pressure output pipeline and pressure intake line with a relief valve, this relief valve is one Plant the composition of the lift check valve with back pressure value, its function is when valve cavity pressure rises above upstream line pressure certain numerical value When can automatically open up this check-valves, to realize the releasing pressure automatically of valve pocket, this pressure relief mechanism can only carry out one-way flow, that is, work as valve body When lumen pressure medium rises to certain numerical value, automatically unnecessary pressure medium can be transported to the upstream end of pipeline, and pass through Upstream end re-flows in valve pocket, and the medium of upstream end can not enter valve body middle chamber by this pressure relief mechanism.
The beneficial effects of the utility model are:A kind of pressure relief mechanism of valve, when in valve, cavity pressure rises to a fixed number During value, unnecessary pressure medium is transported to the upstream end of pipeline by the pressure relief mechanism that can connect automatically by valve side, passes through Upstream end is re-delivered in valve pocket, and the hazardous medium of the external discharge not only releasing pressure automatically being caused is reclaimed, and also will Unnecessary medium is delivered in the upstream line of valve, not only save resources, prevent hazardous medium to environment and Harmful substance causes unexpected injury, not only environmental protection but also energy-saving safe.
Brief description
It is presented herein below and combine accompanying drawing and example further illustrates to this utility model:
Fig. 1 is:A kind of side-looking figure structure schematic representation of the pressure relief mechanism of valve
Fig. 2 is:A kind of main view figure structure schematic representation of the pressure relief mechanism of valve
Fig. 3 is:A kind of B mplifying structure schematic diagram of the pressure relief mechanism of valve
In in figure:1. valve body, 2. upstream end flanges, 3. valve pocket, 4. pressure output pipeline, 5. relief valve, 6. pressure input Pipeline
Specific embodiment:
In Fig. 1,2:Containing valve body 1, upstream end flanges 2, valve pocket 3, pressure output pipeline 4, relief valve 5, pressure input Pipeline 6, pressure output pipeline 3 are the pressure output pipeline 4 drawn in valve pocket 3 oil leak hole, and connect an adjustable joint and connect Head, pressure intake line 6 are one screwed hole parallel with pressure output pipeline 4 of brill at the upstream end flanges 2 of valve body 1, and Connect a loose joint pipe joint, relief valve 5 is arranged on pressure output pipeline 4 and pressure intake line 6 centre position, and connects pressure Output pipe 4 and pressure intake line 6, form a kind of pressure relief mechanism of valve.
A kind of pressure relief mechanism of valve, employs theory of mechanics technology, connects at the relief hole of traditional DIB-1 valve One pressure output pipeline 4, is provided with a pressure intake line 6 parallel with pressure output pipeline 4 in the upstream position of valve, and Connect pressure output pipeline 4 and pressure intake line 6 with a relief valve 5, this relief valve 5 stops for a kind of lifting with back pressure value Return valve group to become, its function is when in valve pocket 3, pressure only can automatically open up this when rising above upstream line pressure certain numerical value Return valve, to realize the releasing pressure automatically of valve pocket 3, this pressure relief mechanism can only carry out one-way flow, that is, when on valve body middle chamber pressure medium When being raised to certain numerical value, automatically unnecessary pressure medium can be transported to the upstream end of pipeline, and be re-flowed by upstream end To in valve pocket 3, the medium of upstream end can not enter valve body middle chamber by this pressure relief mechanism.

Claims (1)

1. a kind of pressure relief mechanism of valve contains valve body, upstream end flanges, valve body middle chamber, pressure output pipeline, relief valve, pressure Intake line, it is characterized in that:Pressure output pipeline is the output pipe drawn in valve pocket oil leak hole, and connects a loose joint Pipe joint, pressure intake line are upstream end flange one screwed hole parallel with pressure output pipeline of brill in valve body, and Connect a loose joint pipe joint, relief valve is arranged on pressure output pipeline and pressure intake line centre position, and it is defeated to connect pressure Go out pipeline and pressure intake line.
CN201620863833.5U 2016-07-30 2016-07-30 Depressurization mechanism of valve Active CN205937944U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620863833.5U CN205937944U (en) 2016-07-30 2016-07-30 Depressurization mechanism of valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620863833.5U CN205937944U (en) 2016-07-30 2016-07-30 Depressurization mechanism of valve

Publications (1)

Publication Number Publication Date
CN205937944U true CN205937944U (en) 2017-02-08

Family

ID=57923405

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620863833.5U Active CN205937944U (en) 2016-07-30 2016-07-30 Depressurization mechanism of valve

Country Status (1)

Country Link
CN (1) CN205937944U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112228622A (en) * 2020-11-02 2021-01-15 扬中市众成管路配件有限公司 Pilot-operated control type pipeline instrument root valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112228622A (en) * 2020-11-02 2021-01-15 扬中市众成管路配件有限公司 Pilot-operated control type pipeline instrument root valve

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