CN219135215U

CN219135215U - Storage tank safety protection system

Info

Publication number: CN219135215U
Application number: CN202223449988.9U
Authority: CN
Inventors: 郝毅
Original assignee: Dalian Fujia Dahua Petrochemical Co Ltd
Current assignee: Dalian Fujia Dahua Petrochemical Co Ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-06-06
Anticipated expiration: 2032-12-23

Abstract

The utility model belongs to the field of chemical industry, and particularly relates to a storage tank safety protection system which comprises a storage tank, a breather valve and a rupture disk, wherein the breather valve is connected to the storage tank through a pipeline in front of the breather valve, the rupture disk is communicated with the storage tank through a pipeline in front of the rupture disk, the rupture disk is connected to an oil gas recovery system through a pipeline behind the rupture disk, and a regulating valve is connected to the pipeline behind the rupture disk. According to the utility model, the rupture disk is added, so that when the breather valve of the storage tank fails, the pressure of the storage tank exceeds the standard, and the overpressure gas can be discharged to the oil gas recovery system through the rupture disk, so that the safety of the normal-pressure storage tank is ensured.

Description

Storage tank safety protection system

Technical Field

The utility model belongs to the field of chemical industry, and particularly relates to a storage tank safety protection system.

Background

In the chemical production process, the normal pressure storage tank stores inflammable and explosive dangerous chemicals, the normal pressure storage tank receives and pays materials, the air temperature changes can cause the gas phase space change in the normal pressure storage tank, and gas discharges the gas with the overpressure in the tank outside the tank through the tank top breather valve so as to ensure the safety of the normal pressure storage tank. However, if the breather valve fails, the gas in the tank cannot be discharged in time, so that the storage tank is expanded and shrunken under overpressure, the wall of the storage tank is seriously damaged, the liquid in the tank is leaked, and the danger of fire and explosion occurs when exposed fire or static electricity is met.

Disclosure of Invention

According to the defects of the prior art, the utility model aims to provide a storage tank safety protection system, and by adding a rupture disc on the front pipe section of a breather valve, when the breather valve fails, and when the pressure reaches the bursting pressure of the rupture disc, the pressure is timely discharged out of the storage tank, so that the safe operation of the storage tank is ensured.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a storage tank safety protection system, includes storage tank, breather valve and rupture disk, the breather valve is connected to the storage tank through the pipeline before the breather valve, the rupture disk is linked together with the storage tank through pipeline before the rupture disk, and the rupture disk is connected to oil gas recovery system through pipeline behind the rupture disk, be connected with the governing valve on the pipeline behind the rupture disk.

Further, the front burst disc pipeline is communicated with the storage tank through two branch pipe sections, and the first branch pipe section of the front burst disc pipeline is connected with the storage tank; the second branch pipe section of the rupture disc front pipeline is connected with the breather valve front pipeline and is communicated with the storage tank through the breather valve front pipeline.

Further, a flame arrester is connected to the burst disk front pipeline.

Further, the pipeline behind the rupture disk is connected with a remote pressure instrument, the remote pressure instrument is connected with a centralized control system through a signal, and the centralized control system controls the regulating valve through pressure display of the remote pressure instrument.

Further, the remote pressure gauge is disposed on an inlet pipe section of the regulator valve.

Further, the breather valve front pipeline and the rupture disk front pipeline are arranged in an equal diameter mode.

Further, the oil and gas recovery system communicates with a flare system.

Further, the breather valve front line and the rupture disk front line are connected to a gas outlet above the tank.

According to the utility model, a pipeline with the same pipe diameter is led out from the front pipeline of the breather valve, a rupture disk is arranged on the rear pipeline of the pipeline, and a pressure remote transmission and regulating valve is arranged on the rear pipeline of the rupture disk. When the breather valve fails, the rupture disk is broken, gas in the tank enters a pipeline behind the rupture disk, the control valve is opened through the remote transmission control system, and the gas discharged from the storage tank is discharged into the oil gas recovery system for treatment. After the pressure is recovered to be normal, the regulating valve is closed, the rupture disk is replaced, and the breather valve is maintained, so that the safety of the storage tank is ensured.

The beneficial effects of the utility model are as follows: through increasing the rupture disk, when the storage tank breather valve trouble, storage tank pressure exceeds standard accessible rupture disk will superpressure gas discharge oil gas recovery system to guarantee the safety of ordinary pressure storage tank.

Drawings

FIG. 1 is a process flow diagram of a tank safety protection system of the present utility model;

in the figure: 1. the device comprises a storage tank, 2, a breather valve, 3, a rupture disk, 4, a regulating valve, 5, an oil gas recovery system, 6, a centralized control system, 7, a remote pressure instrument, 8, a flame arrester, 9, a pipeline before the breather valve, 10, a pipeline before the rupture disk, 11, a pipeline after the rupture disk, A and a torch system.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

Referring to fig. 1, a tank safety protection system comprises a tank 1, a breather valve 2 and a rupture disk 3, wherein the breather valve 2 is connected to the tank 1 through a breather valve front pipeline 9, the rupture disk 3 is communicated with the tank 1 through a rupture disk front pipeline 10, the rupture disk 3 is connected to an oil gas recovery system 5 through a rupture disk rear pipeline 11, and a regulating valve 4 is connected to the rupture disk rear pipeline 11.

Further, the pre-burst-disc pipeline 10 is communicated with the storage tank 1 through two branch pipe sections, and the first branch pipe section of the pre-burst-disc pipeline 10 is directly connected with the storage tank 1; the second branch pipe section of the rupture disc front pipeline 10 is connected with the breather valve front pipeline 9, and is communicated with the storage tank 1 through the breather valve front pipeline 9. A breather valve front line 9 and a rupture disk front line 10 are connected to the gas outlet above the tank 1.

Further, a flame arrester 8 is connected to the rupture disk foreline 10.

Further, the pipeline 11 behind the rupture disk is connected with a remote pressure instrument 7, the remote pressure instrument 7 is connected with the centralized control system 6 through a signal, and the centralized control system 6 controls the regulating valve 4 through the pressure display of the remote pressure instrument 7.

Further, the remote pressure gauge 7 is provided on the inlet pipe section of the regulator valve 4. The opening of the regulator valve 4 is controlled by the in-pipe pressure detected by the remote pressure gauge 7.

Further, the breather valve front pipeline 9 and the rupture disk front pipeline 10 are arranged in equal diameters. The pressure in the two pipes can be ensured to be stable and consistent, and the bursting pressure of the bursting disc can be conveniently controlled.

Further, the oil and gas recovery system 5 communicates with a flare system.

According to the utility model, a pipeline with the same pipe diameter is led out from a pipeline 9 in front of a breather valve, a rupture disk 3 is arranged on the rear pipeline of the pipeline, and a remote pressure instrument 7 and a regulating valve 4 are arranged on the rear pipeline of the rupture disk 3. The overpressure gas in the tank is normally discharged outside the tank 1 through the breather valve 2. When the breather valve 2 fails, gas in the tank enters the rupture disk 3 through the flame arrester 8, the rupture disk 3 achieves the action of bursting pressure, the rupture disk breaks, the gas in the tank enters a pipeline behind the rupture disk, and when the centralized control system 6 monitors that the pressure reaches 3KPa, the regulating valve 4 is opened through the remote transmission control system, and the gas discharged from the storage tank 1 is discharged into the oil gas recovery system 5 for treatment. When the pressure of the storage tank 1 is reduced to 0, the regulating valve 4 is closed, the rupture disk 3 is replaced, and the breather valve 2 is maintained, so that the safety of the storage tank 1 is ensured.

In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The foregoing list is only the preferred embodiments of the present utility model. Obviously, the utility model is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present utility model.

Claims

1. A storage tank safety protection system, characterized in that: including storage tank, breather valve and rupture disk, the breather valve is connected to the storage tank through the pipeline before the breather valve, the rupture disk is linked together with the storage tank through pipeline before the rupture disk, and the rupture disk is connected to oil gas recovery system through pipeline behind the rupture disk, be connected with the governing valve on the pipeline behind the rupture disk.

2. The tank safety protection system of claim 1, wherein: the first branch pipe section of the front burst disc pipeline is connected with the storage tank; the second branch pipe section of the rupture disc front pipeline is connected with the breather valve front pipeline and is communicated with the storage tank through the breather valve front pipeline.

3. The tank safety protection system of claim 1, wherein: and the front pipeline of the rupture disk is connected with a flame arrester.

4. The tank safety protection system of claim 1, wherein: the remote pressure instrument is connected to the pipeline behind the rupture disk and is connected with the centralized control system through a signal, and the centralized control system controls the regulating valve through the pressure display of the remote pressure instrument.

5. The tank safety protection system of claim 4, wherein: the remote pressure meter is arranged on the inlet pipe section of the regulating valve.

6. The tank safety protection system of claim 1, wherein: the breather valve front pipeline and the rupture disk front pipeline are arranged in an equal diameter mode.

7. The tank safety protection system of claim 1, wherein: the oil gas recovery system is communicated with the torch system.

8. The tank safety protection system of claim 1, wherein: the breather valve front pipeline and the rupture disk front pipeline are connected to a gas outlet above the storage tank.