WO2018176198A1

WO2018176198A1 - Dome-based cyclic inert sealing system for external floating roof tank and qhse storage and transport method thereof

Info

Publication number: WO2018176198A1
Application number: PCT/CN2017/078298
Authority: WO
Inventors: 孙强丹
Original assignee: 孙强丹
Priority date: 2017-03-27
Filing date: 2017-03-27
Publication date: 2018-10-04
Also published as: JP2019526505A; KR20190037321A; KR102212185B1; JP6838141B2

Abstract

Provided are a dome-based cyclic inert sealing system for an external floating roof tank and a QHSE storage and transport method thereof. The system comprises an external floating roof tank (1), a dome structure (2), an inert sealing pipeline, and a gas source servo device (3). A tank wall top portion of the external floating roof tank (1) is sealed by constructing the dome structure (2), and together with an internal wall, a floating plate (11) and a sealing device (13) form a gas phase space which is isolated from atmosphere and connected to and communicating with the gas source servo device (3) by means of the inert sealing pipeline so as to displace oxygen with an inert sealing medium. The gas source servo device (3) detects gas-related technical parameters of the gas phase space in real time, and according to preset thresholds implements feedback-control of a gas state in the gas phase space by supplying or storing the inert sealing medium, thereby keeping the oxygen content of an inert sealing medium atmosphere less than a burning or explosion limit of a protected material. Cleaning, purifying and temperature control of the inert sealing medium can be performed by forced circulation or in a process of the gas source servo device (3) providing large or small gas flows. Moreover, the gas source servo device (3) can provide a defense capability against a warhead detonating in a gas phase space and/or material.

Description

Cylindrical-based circulating idler system for floating roof tank and QHSE storage and transportation method

Technical field

The invention relates to the field of bulk liquid hazardous chemicals storage and transportation technology, in particular to the field of safety and environmental protection technology of an outer floating roof tank, in particular to a dome-based circulating idle seal system for an outer floating roof tank, and based on The system's quality, health, safety, and environmental integration (hereinafter referred to as QHSE) storage and transportation methods.

Background technique

Materials with strategic resource attributes such as petroleum and its products are both the support of national strength and the composition of combat power. Because such materials and their storage and transportation methods, engineering facilities and technical equipment are common to the military and civilians, and common to the war, they will inevitably become the focus of strategic interests and tactical offensive and defensive in the military struggle. However, in the context of the contemporary attacking force of the series-type shaped charge type bombs, the actual combat, the normal deterrence, and the normal deterrence, the predecessor penetrated the broken wall opening, and the final warhead blasted into the container. In turn, the explosion of oil and gas, the detonation of materials, and the impact of the overall chemical explosion are markedly effective and cost-effective. It is the basic mode of demolition of military and oil supply projects, national strategic reserves, chemical industrial parks and other important military and economic objectives. Bullet and optimal tactics. Therefore, in the existing military fuel supply engineering, the independent defense technology is limited to the concealed project of the cavern and the fire protection technology. The existing outer floating roof tank cannot be applied to the current military oil supply project, and should deal with the detonation mode attack in the outer floating roof tank. Self-defense power is indispensable.

In addition, it is well known that volatile liquid organic compounds (VOCS) produced by bulk liquid hazardous chemicals are known as precursor pollutants, carcinogenic drivers, haze contributors and greenhouse effect genesis. Government key management objectives in the areas of public safety, life and health, environmental protection, cleaner production, product quality, and energy conservation and emission reduction. However, the prior art involving different categories of bulk liquid hazardous chemical containers is often a process that is contrary to each other.

For example, in the prior art, since the open top of the outer floating roof tank has many drawbacks, technical measures for constructing the dome at the open position have become a trend. However, although this technical measure eliminates the safety risk of dissipating oil and gas at the lightning ignition seal ring, it brings the safety risk of “oil and gas accumulation above the floating plate” and still causes air pollution when the oil and gas ventilation is vented. Therefore, it is intended to normally isolate the atmosphere, dynamic cycle inert seal, never gas phase discharge, transport The low-cost technical solution, which is in line with the value orientation of technological advancement in this field, is not only the necessary path for the integration of QHSE to realize the engineering significance of the outer floating roof tank, but also the inevitable choice for generating the independent defense force.

At present, the Chinese invention patent entitled "Inert Sealing and Anti-explosive Equipment for Dangerous Chemical Containers and Defence Method", Patent No. ZL200410169718.3 (invented and authorized by the inventor) provides a technical solution for circulating inertia suppression. . The technical measures provided by the scheme to "circulate the gas phase space of the material container by the inerting medium" can control the normalization of the oxygen content of the oil and gas above the floating plate to be less than the lower limit of the combustion explosion limit of the protected material, and permanently inhibit the burning of dangerous chemical materials. Explosive conditions were achieved and preliminary response to the detonation of containers and materials in the warhead. However, this scheme only gives a general implementation scheme of the gaseous inert seal medium source, and does not focus on the internal structure, process, control requirements and autonomous defense mechanism of the circulating inert seal system, resulting in the existing outer floating roof tank. Safety technology is still limited to emergency fire protection technology and cannot be used as a military fuel supply project.

In order to make up for the deficiencies of the prior art, the present invention provides a cycle-based idle-sealing system for a dome-based outer floating roof tank, which is intended to improve the efficiency and performance of an idler medium source, and a QHSE storage and transportation method based on the system. Under the premise of realizing the integrated operation of QHSE, the independent defense force is effectively generated.

Summary of the invention

One of the objects of the present invention is to provide a cycle-based inertia sealing system for a dome-based outer floating roof tank, which enables the outer floating roof tank to be normally insulated from the atmosphere.

A second object of the present invention is to provide a cycle-based inertia sealing system for a dome-based outer floating roof tank capable of feedback controlling the state of the inerting medium in the gas phase space of the outer floating roof tank.

A third object of the present invention is to provide a cycle-based inertia sealing system for a dome-based outer floating roof tank capable of removing impurities in the inert seal medium during the cycle.

The fourth object of the present invention is to propose a QHSE storage and transportation method based on the cyclic air-sealing system, which can upgrade the existing emergency fire-fighting technology as a safety equipment for normal application, and can fundamentally solve the outer floating roof tank as an environmental protection equipment. Air pollution can effectively resolve the contradiction between “ventilating for safety” and “restricting emissions for environmental protection”, and achieving the intrinsic safety of gas-free emissions.

The fifth object of the present invention is to propose a QHSE storage and transportation method based on the cyclic air-sealing system, which is capable of generating a defensive force against the detonation of the warhead in the gas phase space and/or material.

In order to achieve at least one of the above objects, the present invention provides a cycle-based idle-sealing system for a dome-based outer floating roof tank, comprising: an outer floating roof tank, a dome structure, an idler line, and a gas source servo device, the outer The top of the tank wall of the floating roof tank is closed by constructing the dome structure, and the dome structure and the inner wall of the outer floating roof tank, the floating tray and the sealing device enclose a gas phase space which is insulated from the atmosphere for flooding An inert sealing medium, which is a gas-type fire-fighting medium applied by a suffocating fire-fighting method; the air-source servo device is connected to the gas phase space through the inerting line and is valve-controlled and connected The state of the inert seal medium in the gas phase space is controlled by feedback.

Further, the air source servo device includes a servo constant pressure unit, and the servo constant pressure unit specifically includes: an air compressor, an inflation check valve, a gas source container, and a degassing device that are sequentially connected and connected in a one-way valve control manner. Valve control components, where:

The air compressor can control the start-up operation and the stop interlock in a manual, linkage and/or automatic mode for outputting, transferring, compressing and filling a part of the air-tight space in the gas phase space to the gas source container. And feedback-controlling the air-tight space of the gas phase space to maintain a state not greater than a preset pressure parameter;

An inflation check valve is matched with a rated exhaust pressure of the incoming air compressor, and is disposed on a pipeline between the exhaust side of the incoming air compressor and the air source container for supporting the gas The source container stores the working gas and accumulates pressure potential energy;

a gas source container matching the rated exhaust pressure and the preset storage amount of the incoming gas compressor for providing and storing an inerting medium filled in the gas phase space;

The degassing valve control assembly is capable of controlling opening and closing in a self-powering, automatic, interlocking, and/or manual mode for controlling the idle-sealing medium in the air source container to be throttled and decompressed, released to the gas phase space, and The feedback controls the idle seal medium in the gas phase space to remain in a state not less than the preset pressure parameter.

Further, the air source servo device has an air inlet port and an air outlet port, the air inlet port is an air inlet of the air compressor, and the air outlet port is an air outlet valve control component a gas port; the idler line includes an air supply line and an air removal line, the dome structure having an exhalation interface and an air intake interface, wherein the exhalation interface of the dome structure passes through the air supply line and the air source servo device The air inlet port is connected in sequence and is in a one-way valve control connection, and the degassing port of the air source servo device is sequentially connected to the air suction port of the dome structure through a degassing line and is connected to the one-way valve.

Further, the outer floating roof tank has a floating tray central drainage pipeline, and the floating tray central drainage pipeline The outer tank port is in communication with the gas source servo via the idler line.

Further, the air compressor further includes a pressure transmitter, the pressure transmitter is installed in the air supply pipeline, and is directly connected to the air compressor via a control system for detecting a gas pressure variable of the gas phase space, and a preset pressure parameter transmission signal for controlling the start-up operation and the shutdown interlock of the incoming gas compressor.

Further, the servo constant pressure unit further includes a saturation purification assembly for condensing, filtering, picking, diverting, confluently, and recovering condensable gas flowing through the inert seal medium of the self, the saturated purification component being connected in series The gas-filled check valve is disposed between the gas source container or in parallel with the pipeline between the gas-filled check valve and the gas source container, and is connected and connected by the first switching valve group.

Further, the saturated purification assembly specifically includes a pressure-type gas-liquid separation device, a first back pressure valve, a purification product diverter valve tube, and a liquid product collection container, wherein the pressure-type gas-liquid separation device and the The rated exhaust pressure of the incoming gas compressor is matched, and the bottom thereof is unidirectionally connected to the liquid product collection container via the purification product diverter valve tube and is connected to the liquid phase valve; the first back pressure valve is set In the degassing side line of the pressurized gas-liquid separation device.

Further, the servo constant pressure unit further comprises a micro differential pressure purification assembly for filtering, extracting, diverting, converging and recovering condensable gas flowing through the inert seal medium of the micro differential pressure, micro pressure The differential cleaning assembly is disposed in series in the incoming gas pipeline or is disposed in parallel with the incoming gas pipeline, and is connected and connected by the second switching valve group.

Further, the micro differential pressure purification assembly specifically includes a micro differential pressure gas-liquid separation device, a purification product diverter valve tube, and a liquid phase product collection container, and the bottom of the micro-pressure gas-liquid separation device passes through the purification product diverter valve The tube is unidirectionally coupled to the liquid product collection vessel and is in fluid communication with the liquid phase.

Further, the servo constant voltage unit further includes a servo temperature adjustment component, and the servo temperature adjustment component specifically includes: a temperature transmitter, an airtight medium cooling device, and/or an airtight medium heating device, wherein the temperature change a transmitter is installed in the idler line, and is communicably connected to the air compressor and/or the degassing valve control component directly or via a control system for detecting a temperature variable of the gas phase space in real time, And pushing a preset temperature parameter transmission signal to cause the incoming gas compressor to start or stop the interlock, and/or the degassing valve control assembly to open and close; the idle sealing medium cooling device is installed in the An exhaust side of the gas compressor; the idle seal medium heating device is mounted in the degassing valve control assembly.

Further, the gas source servo device further includes a gas source purification unit for separating, grooming, and collecting the non-condensable impurity gas flowing through the inert seal medium of the self.

Further, the gas source purification unit specifically includes: a third switching valve group and a non-condensing impurity gas removing unit, the non-condensing impurity gas removing unit and the inflation check valve to the air source container The pipelines are arranged in parallel, and are connected and connected by the third switching valve group for removing non-condensing or difficult-condensing impurity gases in the inerting medium in a linkage, automatic and/or manual mode, The impurity gas includes at least oxygen.

Further, the incoming gas compressor further includes a predetermined gas content sensor installed on the idler line, and is respectively connected to the incoming gas compressor and the third switching valve group directly or via a control system. Automatically controlling the start-up operation or the shutdown interlock of the incoming gas compressor by automatically detecting the predetermined gas content in the gas phase space, pushing a predetermined gas content parameter transmission signal, and automatically controlling the third switching valve group to perform switching .

Further, the predetermined gas content sensor is a gas content sensor of at least one or a combination of at least one of oxygen, nitrogen, methane and non-methane total hydrocarbons.

Further, the dome structure is provided with a manhole assembly, and the manhole assembly comprises a manhole body having a through hole and a manhole cover capable of sealingly covering the through hole, the manhole body and The dome structure is sealingly connected, and a floating escalator is disposed between the manhole seat body and the floating plate, and the manhole cover body can be opened when the worker enters and exits the gas phase space, and the worker passes the After the through hole is sealed and closed.

Further, a manhole compartment is further disposed above the manhole assembly for the staff to replace the self-contained breathing apparatus and/or the special tool for storing the gas phase space.

Further, a bulkhead wall is vertically disposed in the manhole compartment, and a closed hatch is provided on the partition wall, the partition wall and the closed hatchway separating the internal space of the manhole compartment into a ventilated compartment and a closed compartment, wherein the ventilated compartment has a door for personnel access and/or a ventilated window for a worker to replace the spontaneous breathing apparatus and/or a special storage tool; the closable compartment is provided to the person Above the hole assembly to reduce the amount of air entering the gas phase space.

Further, the dome structure is a hard or soft gas-impermeable structure having a skeleton or no skeleton.

Further, the gas impermeable structure having a skeleton includes a support skeleton and a gas impermeable hard material or a tensile film structure installed between the support skeletons.

Further, the skeleton-free gas-impermeable structure is a gas-impermeable rubberized fabric or a soft chemical film, and the force of the skeleton-free gas-impermeable structure that is formed by overcoming the self-weight is caused by the pressure of the inerting medium in the gas phase space. provide.

Further, the dome structure is a gas-tight structure capable of generating a Faraday cage lightning protection effect for preventing lightning and static damage, and for inducing a blasting wall warhead in response to a shaped charge attack.

Further, a solar energy utilization system is further included, the battery panel or membrane of the solar energy utilization system being disposed on the outer wall surface of the dome structure and/or the outer floating roof tank.

Further, an explosion-proof buffer container is further connected in series in the incoming gas pipeline and/or the degassing pipeline, and the fire-proof and explosion-proof material is installed in the explosion-proof buffer vessel.

Further, the outer floating roof tank is disposed in parallel with at least two, the explosion-proof buffer container comprises a gas explosion-proof buffer container and a degassing explosion-proof buffer container, and the gas explosion-proof buffer container has at least two a gas input port and a common incoming gas output port, the degassing explosion-proof buffer container having a common degassing input port and at least two degassing output ports, wherein each of the outer floating top cans exhales The interface is connected to the incoming air inlet port of the incoming air explosion-proof buffer container via a corresponding incoming air line, and the incoming air output port of the incoming air explosion-proof buffer container passes through the shared air supply line and the The air supply port of the air source servo device is connected to communicate; the degassing port of the air source servo device is connected to the degassing input port of the degassing explosion-proof buffer container via a common degassing line, the degassing The degassing output port of the explosion-proof buffer container is connected to the suction interface of each of the outer floating roof tanks via respective degassing lines.

Further, the gas explosion-proof buffer container further has an interface for receiving external air to input an inert or sealed inert seal medium; and the degassing explosion-proof buffer container also has an interface for degassing the external output. Used to output pure inert seal media to the outside.

Further, the air source servo device further includes a monitoring and early warning unit for performing internal monitoring and externally pushing the warning signal.

In order to achieve at least one of the above objects, the present invention also provides a QHSE storage and transportation method based on the aforementioned cyclic idle sealing system for an outer floating roof tank, comprising a servo large breathing step:

The gas source servo device detects a pressure variable for characterizing the gas phase space gas state in real time; when the outer floating roof tank input material, the floating plate and the sealing device are lifted with the liquid surface and the gas phase The space is gradually reduced, causing the air source servo to start when the pressure variable rises to a first preset pressure threshold a gas collection process, transferring, compressing, and storing a portion of the inerting medium in the gas phase space into the gas source servo until the pressure variable falls back to a second pre-step that is not higher than a first preset pressure threshold Stopping the gas collection procedure when the pressure threshold is set;

When the outer floating top tank output material, the floating tray and the sealing device fall with the liquid surface and the gas phase space gradually expands, causing the pressure variable to fall below the second preset pressure threshold When the third preset pressure threshold is reached, the air source servo device starts a gas supply program, and the idle seal medium stored in the air source servo device is throttled and decompressed, and released to the gas phase space until the The gas supply process is stopped when the pressure variable rises to the second predetermined pressure threshold.

Further, the step of servo small breathing is also included:

When the gas phase space rises due to a change in ambient temperature, and the pressure variable rises to a first preset pressure threshold, the gas source servo initiates a gas collection process to partially seal the gas phase space Transferring, compressing, and storing the medium to the gas source servo device, and stopping the gas collection process until the pressure variable falls back to a second preset pressure threshold that is not higher than the first preset pressure threshold;

When the gas phase space drops due to a change in ambient temperature, and the pressure variable drops to a third preset pressure threshold that is not higher than the second preset pressure threshold, the gas source servo device initiates a gas supply process, Discharging the idle seal medium stored in the gas source servo device to the gas phase space by throttling and decompressing until the pressure variable rises to the second preset pressure threshold Gas supply program.

Further, the dome structure is a gas-tight structure capable of generating a Faraday cage lightning protection effect, and is used for preventing lightning or static electricity damage, and a broken wall warhead for igniting the shaped charge; and further comprising a blasting wall warhead step:

When the shaped charge is close to the dome structure having the Faraday cage lightning protection effect, the guiding device regards the dome structure as the tank top, so that the broken wall warhead penetrates, breaks the wall, and opens the hole; When the secondary warhead enters the gas phase space, its detonating device cannot detonate the secondary warhead in an effective or optimal high-explosive height. It penetrates the floating disk and makes it difficult to achieve the fighting purpose of the warhead in the material. The floating disk is protected when the accompanying warhead is detonated in the gas phase space; the fighting purpose of the shaped charge cannot be achieved, thereby protecting the outer floating roof tank and its materials.

Further, it also includes the steps of generating a defensive force:

Running the cyclically sealed system and detecting the internal or external gas phase space of the material container in real time Gas state variable;

When the entrainment of the shaped charge is successfully detonated in the atmosphere and the material of the gas phase space of the outer floating roof tank, the detonation energy is absorbed, absorbed and absorbed by the inerting medium. Or being immersed by the inert seal line to the gas source servo for further absorption and absorption;

The detonation energy triggers the air source servo to initiate a forced cooling program: the output of the incoming gas compressor is used to transfer and compress a portion of the inerting medium in the gas phase space through the incoming gas pipeline to be filled to The gas source container and cooling the inerting medium;

The degassing valve control assembly is opened, and the inerting medium in the air source container is released to the gas phase space of the material container by cooling, throttling and decompression;

Forming a continuous or pulsed forced convection cycle and cooling of the inerting medium in the gas phase space under the action of the gas source servo for continuously purifying the inerting medium and reducing the material vapor concentration;

Under the action of the gas source servo device, the inert seal medium in the gas phase space is continuously discharged along the penetration hole on the dome structure to prevent air from entering the gas phase space;

The outer floating roof tank and its materials are protected by "there is a theoretical probability of an overall chemical explosion and/or physical explosion."

Based on the above technical solution, the present invention can form a dome structure at the top of the tank wall of the outer floating roof tank to form a gas phase space capable of isolating the atmosphere and filling the inert seal medium, and the air source servo device can be used to seal the gas phase space. The function of storage, supply, purification and purification of the medium enables the normalization of the oxygen content of the gas phase space to be less than the lower limit of the combustion explosion limit of the protected material under the premise of effectively supporting the input, output and static storage of the material, thereby permanently suppressing The achievement of the combustion and explosion conditions of the material in the outer floating roof tank.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of a circulating inert seal system for a dome-based outer floating roof tank according to the present invention.

2 is a schematic view showing the principle of an implementation of the air source servo device in the embodiment of the dome-based outer floating roof tank.

detailed description

The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments.

In the present invention, "closed" refers to physical isolation from the atmosphere; the concept of "inert sealing" includes, but is not limited to, the well-known "inertial sealing of gas phase space in a gas-type fire-fighting medium flooding system", permanent gas-free discharge type "Dynamic sealing medium" refers to a gas-type inert medium commonly used in suffocating fire fighting methods, including nitrogen, carbon dioxide gas, rare earth noble gas or engine exhaust gas, which are selected according to working conditions and conditions; The concept of "cyclically inert seal" includes, but is not limited to, the concept of recycling inert seals using inert seal media, including, inter alia, purging gas inert seal media in a natural or forced circulation process, The concept of purification and temperature regulation.

As shown in FIG. 1, it is a schematic structural view of an embodiment of a cycle-based idle sealing system for a dome-based outer floating roof tank according to the present invention. In the present embodiment, the dome-based circulating idler system for the outer floating roof tank includes: an outer floating roof tank 1, a dome structure 2, an idle sealing line, and a gas source servo device 3. The top opening of the tank wall of the outer floating roof tank 1 is closed by constructing the dome structure 2 for isolating the atmosphere. The inner wall of the outer floating roof tank 1, the floating tray 11, the sealing device 13 and the dome structure 2 together enclose a gas phase space A which is insulated from the atmosphere for filling the inert gas sealing medium. The air source servo device 3 is connected to the gas phase space A through the air-tight space and is in valve-controlled communication, and the gas source servo device 3 can pass the air seal according to the gas technical parameters in the gas phase space A. The manner in which the medium is stored, supplied, or circulated, feedback controls the state of the art (including physical and chemical states) of the inert seal medium that is flooding the gas phase space A.

In the outer floating roof tank 1 of the present embodiment, the floating tray 11 and the sealing device 13 which are lifted or lowered along the inner wall thereof according to the input or output of the material reduce or enlarge the volume of the gas phase space A, wherein the inertial sealing medium The technical parameters also changed. The gas source servo device 3 detects the technical parameters in real time, and during the start of the gas collection or gas supply process according to the preset threshold value, the gas state of the inert gas sealing medium in the gas phase space A is feedback controlled.

In the material loading and unloading process of the outer floating roof tank 1, the present embodiment can perform a servo large breathing step, that is, the gas source servo device 3 detects the pressure variable for characterizing the gas phase space A gas state in real time. When the outer floating roof tank 1 inputs material, the floating tray 11 and the sealing device 13 are lifted with the liquid surface and the gas phase is empty When the pressure A is gradually reduced, causing the pressure variable to rise to the first preset pressure threshold, the gas source servo device 3 starts a gas collection process, transferring, compressing, and storing a portion of the inerting medium in the gas phase space A. In the gas source servo device 3, the gas collection process is stopped until the pressure variable falls back to a second preset pressure threshold that is not higher than the first preset pressure threshold.

When the output material of the outer floating roof tank 1 , the floating tray 11 and the sealing device 13 fall with the liquid surface, the gas phase space A is gradually enlarged, so that the pressure variable is reduced to not higher than the second pre- When the third preset pressure threshold of the pressure threshold is set, the air supply servo device 3 starts the air supply program, and the idle seal medium stored in the air source servo device 3 is throttled and decompressed, and released to the The gas phase space A is stopped until the pressure variable rises to the second predetermined pressure threshold.

When the outer floating roof tank 1 itself and the ambient temperature change, a servo small breathing step may be performed, that is, when the gas phase space A increases in pressure due to an environmental temperature change, and the pressure variable rises to a first preset pressure threshold, The air source servo device 3 starts a gas collection program, transfers, compresses and stores a portion of the air-sealing medium in the gas phase space A to the gas source servo device 3 until the pressure variable falls back to no higher than the first The gas collection process is stopped when a second predetermined pressure threshold of the preset pressure threshold is reached.

The gas source servo device 3 starts the gas supply when the gas phase space A falls due to the change of the ambient temperature, and the pressure variable falls to a third preset pressure threshold that is not higher than the second preset pressure threshold. a process of throttling and decompressing the idle seal medium stored in the gas source servo device 3 to the gas phase space A until the pressure variable rises to the second preset pressure threshold The gas supply procedure is stopped.

In addition to the pressure state, the gas source servo device 3 can also dispose the inert seal medium in the gas phase space A according to other technical parameters (such as temperature variables, oxygen content variables, methane gas content variables, etc.), and the disposal manner includes self-power circulation. And forced circulation two kinds. The self-power cycle refers to the cycle of the gas source servo device in the process of inputting or outputting materials, and the cycle period is synchronized with the input and output cycles of the material; extracting or replenishing, or making the air seal in the gas phase space A The medium circulates between the plurality of material containers through the inerting line.

In the embodiment, the top opening of the tank wall of the outer floating roof tank is formed by forming a dome structure, and a gas phase space capable of isolating the atmosphere is formed, and the gas phase space is maintained by the gas source servo device to fill the state of the airtight space, so that the outer floating roof tank is The material can control the normalization of oxygen content under the protection of the inerting medium to be less than the lower limit of the combustion explosion limit of the protected material, and permanently suppress the burning of hazardous chemical materials contained in the outer floating roof tank. The condition of the bombing was achieved, and the normalization responded to the attack of the warhead in the container. At the same time, the gas source servo device can store and release the inert seal medium in the gas phase space according to the technical parameters of the gas phase space, so that the circulation of the inert seal medium in the circulating idle seal system of the outer floating roof tank can be realized, and the idle seal can be saved. The amount of media used can also ensure the safety of the outer floating roof tank itself and the materials.

For the outer floating roof tank adopting the dome structure of the present invention, when it is subjected to the bomb attack aimed at causing the overall chemical explosion, the dome structure can induce the blasting wall warhead, so that the accompanying warhead is in the gas phase space. Detonation. Since the gas phase space is filled with the inert seal medium, it will not cause serious damage to the materials in the outer floating roof tank.

Another possibility is that when the outer floating roof tank is subjected to an attack by a bomb designed to cause an overall chemical explosion, the dome structure can provoke the end warhead, and the intermediate broken warhead successfully penetrates the floating disk, and The warhead successfully detonated in the material in the outer floating roof tank. However, since the gas phase space is filled with an inert seal medium, this oxygen-free atmosphere can effectively suppress the overall chemical explosion of the material.

In the existing open floating roof tank, rainwater is accumulated due to the upper part of the floating tray. In order to realize the drainage of the outer floating roof tank, the central drainage pipeline of the floating tray is usually arranged in the center of the floating tray, and the central drainage pipeline of the floating tray The outer tank port is in communication with the gas source servo 3 via the idler line. In this way, the arrangement of the idle seal pipeline can be simplified when the existing outer floating roof tank is modified, thereby reducing the transformation cost and the modification difficulty of the outer floating roof tank. In a preferred embodiment, the air supply servo 3 can also be connected directly to the tank wall or dome structure 2 of the outer floating roof tank 1 via an idler line.

In order to perform maintenance work or the like inside the outer floating roof tank 1, a manhole assembly may be disposed on the dome structure 2, the manhole assembly including a manhole body 22 having a through hole and a person capable of sealingly closing the through hole a hole cover body 21, the manhole seat body 22 is sealingly connected to the dome structure 2, one end of the through hole communicates with the gas phase space A, and the manhole cover body 21 can enter and exit the gas phase at a worker When the space A is opened, the through hole is sealed and closed after the worker passes the through hole to ensure the sealed state of the gas phase space A.

In order to enable the worker to smoothly reach the floating tray 11, a floating escalator 12 may be disposed between the manhole base 22 and the floating tray 11 for the worker to enter and exit the gas phase space A and the floating tray 11 surface.

In order to ensure the closure of the gas phase space and to allow the worker to conveniently enter the gas phase space, it is preferred to cover the manhole compartment 23 above the manhole assembly. The manhole compartment 23 is used for staff to enter the gas phase Autonomous breathing equipment and/or special storage tools required for Space A. When the worker wants to enter the gas phase space, the manhole chamber 23 can be replaced with the self-breathing device, and then enters the gas phase space A through the manhole assembly, and when the worker leaves the gas phase space A, the manhole is first passed through the manhole. The assembly enters the manhole compartment 23, and the autonomous breathing apparatus is replaced in the manhole compartment 23 and exits the manhole compartment 23.

A bulkhead wall may be vertically disposed in the manhole compartment 23, and a closed hatch is provided on the partition wall, the partition wall and the closed hatchway separating the internal space of the manhole compartment 23 into Ventilation and confined cabins. Wherein, the ventilation chamber has a door 24 for accessing personnel and/or a window for ventilation, for the staff to replace the self-breathing device and/or the special tool for storage. The airtight compartment is disposed above the manhole assembly to reduce the amount of air entering the gas phase space A.

The dome structure 2 in Fig. 1 is an important component constituting the gas phase space A, and it can adopt various structural forms, for example, a gas-tight structure having a skeleton as the dome structure 2. The airtight structure of the skeleton mainly depends on the supporting and fixing of the supporting skeleton for the dome, and the airtight portion is installed between the supporting skeletons. For example, a gas impermeable structure having a skeleton includes a support skeleton and a gas impermeable hard material or a tensile film structure mounted between the support skeletons. The gas impermeable hard material herein may be various existing hard plates and mounted between the support frames, and the film structure may be formed by a film drawing process between the support frames.

In another embodiment, a skeleton-free, gas impermeable structure can also be used as the dome structure 2. The skeleton-free gas-impermeable structure is an air-impermeable rubberized fabric or a soft chemical film, and the gas-impermeable rubberized fabric or soft chemical film is more expensive than the existing skeleton-shaped dome structure. The effect of the upwardly bulging formation of the low-cost, non-porous, gas-impermeable structure is obtained by the pressure of the inert seal medium in the gas phase space A overcoming the self-weight of the gas-impermeable structure.

Another implementation of the dome structure 2 is a gas-tight structure capable of producing a Faraday cage lightning protection effect for preventing lightning or static damage and for inducing a blasting wall warhead. The dome structure 2 can also be the aforementioned airtight structure with or without a skeleton, but can produce a Faraday cage lightning protection effect in terms of material and structural form selection.

For the dome structure that can produce the Faraday cage lightning protection effect, when the dome structure of the outer floating roof tank is subjected to the attack of the bomb which is intended to cause the overall chemical explosion, the dome structure can induce the wall warhead and the The distance between the dome structure and the floating disk cannot be predicted, which makes the explosion of the secondary warhead impossible to set, penetrates the floating disk, and makes the combat purpose of the warhead in the material difficult to achieve. Moreover, since the gas phase space is filled with the inert seal medium, the warhead cannot ignite or detonate the material in the anaerobic atmosphere, and the fighting purpose of the overall chemical explosion cannot be achieved. When the detonation energy diffuses into the atmosphere through the dome structure, the Faraday electromagnetic cage effect produced by the dome structure can suppress the centrifugal release of the detonation energy and reduce the possibility of cloud explosion.

Further, the detonation energy triggers the air source servo device to initiate a forced cooling program: another dome structure 2 is implemented as a gas-tight structure capable of generating a Faraday cage lightning protection effect, for preventing lightning or static electricity damage, Encourage the blasting wall warhead and the energy transfer of the two-way chemical explosion. The dome structure 2 can also be the aforementioned airtight structure with or without a skeleton, but can produce a Faraday cage lightning protection effect in terms of material and structural form selection. For a dome structure capable of producing a Faraday cage lightning protection effect, when the top of the outer floating roof tank is subjected to an attack of an ammunition intended to cause an overall chemical explosion, the dome structure can induce the wall warhead, and The distance between the dome structure and the floating disk cannot be predicted, and the explosion height of the secondary warhead cannot be set. The combat purpose of penetrating the floating disk is difficult to achieve, so that the following warhead is only in the gas phase above the floating disk. The chance of space detonation increases. Since the gas phase space is filled with an inert seal medium, this oxygen-free atmosphere can effectively suppress the overall chemical explosion of the material. When the detonation energy diffuses into the atmosphere through the dome structure, the Faraday electromagnetic cage effect produced by the dome structure can suppress the centrifugal release of the detonation energy and reduce the possibility of cloud explosion.

And triggering, by the detonation energy, the air source servo device to initiate a forced cooling program: by the output of the incoming gas compressor, transferring, compressing, and charging a portion of the inerting medium in the material container through the incoming gas pipeline Loading to the gas source container and cooling the inerting medium; the degassing valve control assembly is opened, and the inerting medium in the gas source container is released by cooling, throttling and decompression to a gas phase space of the material container; under the action of the gas source servo device, a continuous or pulsed forced convection cycle and temperature reduction of the inert seal medium is formed in the dome structure for continuously purifying the inert seal medium Reducing the material vapor concentration; the gas source purifying device continuously produces nitrogen gas by using air as a raw material, filling the material container through the inert sealing line, and discharging the inerting medium in the penetrating hole The air is prevented from entering the material container, thereby generating a defensive force against the detonation in the container of the warhead.

In the above various dome structures, a solar energy utilization system may be further installed, and a battery panel or film of the solar energy utilization system is disposed on the outer wall surface of the dome structure 2 and/or the outer floating roof tank 1 to save the outside. The energy supply of the circulating idler system for floating roof tanks.

The implementation of the air source servo device 3 will now be described with reference to FIG. The air source servo device 3 includes a servo constant pressure unit for storing and releasing the idle seal medium. The servo constant pressure unit specifically includes: an air compressor 31 that is sequentially connected and connected in a one-way valve control manner, and is inflated. The return valve 32, the air source container 33 and the degassing valve control assembly 34. Wherein, the incoming air compressor 31 controls the starting operation and the stop interlock according to the technical parameter transmission signal of the intake side working gas, and is used for outputting and compressing and storing the inerting medium of the gas phase space A to the air source container. 33, and controls the gas state of the inert seal medium of the gas phase space A.

The inflation check valve 32 is matched with the rated exhaust pressure and flow rate of the incoming air compressor 31 for preventing the return of the idle seal medium loaded into the air source container 33 by the incoming air compressor 31. . The gas source container 33 is matched with the rated exhaust pressure and flow rate of the incoming gas compressor 31 for storing the inert seal medium discharged from the incoming gas compressor 31, and accumulating pressure potential energy. The degassing valve control assembly 34 controls the throttling and decompression of the gaseous inert gas in the gas source container 33 according to a preset technical variable of the degassing side working gas, and passes the inertial sealing line to the gas phase space A. Released to control the gas state of the inert seal medium of the gas phase space A.

1 , the air source servo device 3 has an air inlet port and an air outlet port, the air inlet port is an air inlet of the incoming air compressor 31, and the air removal port is the air removal valve control assembly 34. The outlet. The idler line includes an air supply line 3a and an air removal line 3b, the dome structure 2 has an exhalation interface and an air suction interface, wherein the exhalation interface of the dome structure 2 passes through the air supply line 3a and the air source The air inlet port of the servo device 3 is sequentially connected and is in a one-way valve control communication, and the degassing port of the air source servo device 3 is sequentially connected to the air suction port of the dome structure 2 via the degassing line 3b and the check valve is connected. Control connectivity.

The incoming gas compressor 31 can control its own starting operation and stop interlocking according to the technical parameter transmission signal of the inerting medium in the gas phase space A. The technical parameters here can be the pressure, temperature and preset type gas content of the gas phase space. Variables, etc. These technical parameter transmission signals are supplied to the incoming air compressor 31 through corresponding transmitters, and the air compressor 31 can realize the storage and storage of excess inert sealing medium in the gas phase space A by the startup operation and the shutdown interlock. . For example, when the pressure in the gas phase space is too high, the temperature is too high, or the oxygen content exceeds the standard, the incoming gas compressor 31 sucks the inert seal medium in the gas phase space A into the gas source container 33 in time by the startup operation. When the technical parameters such as pressure, temperature, and oxygen content in the gas phase space A are within a preset range, the incoming gas compressor 31 stops interlocking. The degassing valve control assembly 34 can control the throttling, depressurization, and release of the inerting medium in the gas source container 33 based on the pressure variable of the inerting medium in the gas phase space A.

For example, the incoming gas compressor 31 may further include a pressure transmitter installed in the incoming gas line 3a and communicably connected to the incoming gas compressor 31 directly or via a control system for A gas pressure variable of the gas phase space A is detected, and a preset pressure parameter transmission signal for controlling the start-up operation and the shutdown interlock of the incoming gas compressor 31 is pushed. When the pressure of the gas phase space A in the gas phase space A leaks or the liquid material discharges or the like causes the pressure of the gas phase space A to be lower than a preset value, the degassing valve control assembly 34 is opened under the pressure difference, so that the air seal in the gas source container 33 is closed. The medium can be replenished into the gas phase space A via the degassing valve control assembly 34. By the above-mentioned functions of the air supply servo device, it is possible to realize the environmental protection by performing the large and small breathing of the gas phase space of the outer floating roof tank with the inert seal medium as the working medium for balance and without discharge.

Considering that there may be some condensable and non-condensable impurities in the inert seal medium extracted from the gas phase space A, these impurities may adversely affect the materials stored in the floating roof tank, and therefore it is necessary to remove the medium in these inert seal media. Correspondingly, the servo constant pressure unit may comprise a saturation purification assembly for condensing, filtering, scooping, diverting, confluently and recovering condensable gas flowing through its own inert seal medium, said saturated purification assembly being connected in series to said charge The check valve 32 is disposed between the gas source container 33 or a line between the gas-filled check valve 32 and the gas source container 33, and is connected and connected by the first switching valve group.

The saturated purification assembly may specifically include a pressure-type gas-liquid separation device, a first back pressure valve, a purification product diverter valve tube, and a liquid product collection container, wherein the pressure-type gas-liquid separation device and the gas The rated discharge pressure of the compressor 31 is matched, and the bottom thereof is unidirectionally connected to the liquid product collection container via the purification product diverter valve tube and is connected to the liquid phase valve; the first back pressure valve is disposed at the bottom The degassing side line of the pressurized gas-liquid separation device is described.

In another optional embodiment, the servo constant pressure unit may further comprise a micro differential pressure purification assembly for filtering, scooping, diverting, confluently and recovering through the inert seal medium flowing through the micro differential pressure condition. The condensed gas, the micro differential pressure purification assembly is disposed in series in the incoming gas line 3a, or is disposed in parallel with the incoming gas line 3a, and is connected and connected by the second switching valve group. The micro differential pressure purification assembly may specifically include a micro differential pressure gas-liquid separation device, a purification product diverter valve tube, and a liquid product collection container, and the bottom of the micro-pressure gas-liquid separation device passes through the purification product diversion valve tube and the The liquid product collection container is unidirectionally connected and is connected to the liquid phase valve.

Additionally, a gas source purification unit can be utilized in the system to separate, channel, and collect non-condensable impurity gases in the inert seal medium flowing through itself. The gas source purification unit may specifically include: a third switching valve group and a non-condensable impurity gas removing unit, wherein the non-condensable impurity gas removing unit is disposed in parallel with the pipeline between the gas-filled check valve 32 and the gas source container 33, and is switched by the third switching valve group Disconnecting for removing non-condensable or difficult-to-condense-like impurity gases in the inerting medium in a linkage, automatic, and/or manual mode, the impurity gases including at least oxygen.

In order to operate the operation automatically, the incoming gas compressor 31 may further include a predetermined gas content sensor mounted on the idler line, respectively, or directly or via the control system of the incoming gas compressor 31 and the third switching valve group a communication connection for detecting a predetermined gas content in the gas phase space A in real time, pushing a predetermined gas content parameter transmission signal, automatically controlling the start-up operation or the shutdown interlock of the incoming gas compressor 31, and automatically controlling the first The three switching valve group performs switching. The predetermined gas content sensor is a gas content sensor of at least one or a combination of oxygen, nitrogen, methane, and non-methane total hydrocarbons.

For some chemical materials that are very sensitive to temperature, proper temperature control is an important condition for the stable storage of materials in the outer floating roof tank. For the circulating idle seal system for the outer floating roof tank, the servo constant pressure unit may further add a servo temperature adjustment component, which specifically includes: a temperature transmitter, an idle seal medium cooling device, and/or an idle seal medium. Heating equipment. Wherein, the temperature transmitter is installed in the idle sealing pipeline, and is connected to the incoming air compressor 31 and/or the degassing valve control component 34 directly or via a control system for real-time detection. The temperature of the gas phase space A is variable, and a preset temperature parameter transmission signal is pushed to cause the incoming gas compressor 31 to start or stop interlocking, and/or the degassing valve control assembly 34 to open and close. The idle seal medium cooling device is mounted on an exhaust side of the incoming gas compressor 31; the idle seal medium heating device is installed in the degassing valve control assembly 34.

In the above embodiment, the explosion-proof buffer container may be connected in series in the air supply line 3a and/or the air removal line 3b, and the fire-proof flameproof material may be installed in the explosion-proof buffer container to achieve the fire resistance of the air-tight medium. Flameproof and cushioning. Further, the outer floating roof tank 1 may be disposed in parallel with at least two, the explosion-proof buffering container includes a gas explosion-proof buffering vessel and a degassing explosion-proof buffering vessel, and the gas-blasting explosion-proof buffering vessel has at least two The gas input port and a common incoming gas output port have a common degassing input port and at least two degassing output ports.

The exhalation interface of each of the outer floating top tanks 1 is connected to the incoming gas inlet port of the incoming gas explosion-proof buffer container via a corresponding corresponding air supply line 3a, and the incoming air-proof explosion-proof buffer container An output port is connected to the incoming air port of the air source servo device 3 via the shared air supply line 3a; the air source is connected The degassing port of the service device 3 is connected to the degassing input port of the degassing explosion-proof buffer container via a common degassing line 3b, and the degassing output port of the degassing explosion-proof buffer container passes through each degassing line 3b is in communication with the suction interface of each of the outer floating roof tanks 1. The air-to-air explosion-proof buffer container may also have an interface for receiving external air to input an inert or sealed inert seal medium. The degassing explosion-proof buffer container may also have an interface for degassing the external output for externally outputting a pure inert seal medium.

In addition, in the embodiments of the above-mentioned circulating air-sealing system, the air source servo device 3 may further include a monitoring and early warning unit for receiving the in-line monitoring and operating system. Characterizing the technical parameters of the inert seal medium, and triggering and remotely pushing the early warning signal when the gas state of the inert seal medium reaches a preset value of the technical parameter.

Various embodiments of the circulating idler system for an outer floating roof tank based on a dome structure have been described in detail above. In the following, based on the above embodiment of the circulating idle seal system for the outer floating roof tank, the present invention also provides a corresponding QHSE storage and transportation method, specifically including a servo large breathing step and/or a servo small breathing step.

The servo large breathing step specifically includes: the gas source servo device 3 detecting a pressure variable for characterizing the gas phase space A gas state in real time; when the outer floating roof tank 1 inputs the material, the floating tray 11 and the The sealing device 13 is lifted with the liquid surface and the gas phase space A is gradually reduced, so that when the pressure variable rises to the first preset pressure threshold, the gas source servo device 3 starts a gas collection process, and the gas phase space A is The inner part of the inerting medium is transferred, compressed and stored in the air source servo device 3, and stops when the pressure variable falls back to a second preset pressure threshold that is not higher than the first preset pressure threshold. Gas program

When the output material of the outer floating roof tank 1 , the floating tray 11 and the sealing device 13 fall with the liquid surface and the gas phase space A gradually expands, the pressure variable is reduced to not higher than the second pre- When the third preset pressure threshold of the pressure threshold is set, the air supply servo device 3 starts the air supply program, and the idle seal medium stored in the air source servo device 3 is throttled and decompressed, and released to the The gas phase space A is stopped until the pressure variable rises to the second predetermined pressure threshold.

The servo small breathing step specifically includes: when the gas phase space A rises due to an environmental temperature change, and the pressure variable rises to a first preset pressure threshold, the gas source servo device 3 starts a gas collection process, and A portion of the inerting medium in the gas phase space A is transferred, compressed, and stored to the gas source servo 3 until the pressure variable falls back to a second preset pressure threshold that is not higher than the first preset pressure threshold. Stop the gas collection procedure;

In a system embodiment employing a gas impermeable structure capable of producing a Faraday cage lightning protection utility as the dome structure 2, the corresponding QHSE storage method also includes a broken wall warhead blasting step and/or a defensive warfare step. The step of blasting the broken wall warhead specifically includes: when the concentrating charge approaches or hits the dome structure 2, the blasting device leads the blasting wall warhead to penetrate and break the dome structure 2, so that It can not achieve the purpose of detonation with the warhead, and thus the outer floating roof tank 1 and its materials can be protected.

The steps to generate defensive capabilities include:

Operating the cyclically nested sealing system and detecting gas state variables inside or outside the gas phase space of the material container in real time;

When the advancing charge of the shaped charge is successfully detonated in the atmosphere and the material of the gas phase space A of the outer floating roof tank 1, the detonation energy is absorbed and absorbed by the inerting medium. And / or by the idler line to the air source servo 3 for further absorption and absorption;

The detonation energy triggers the air source servo device to initiate a forced cooling program: a force is generated by the incoming air compressor 31, and a portion of the inert gas sealing medium in the gas phase space A is transferred and compressed through the gas supply line 3a. Filling the gas source container 33 and cooling the inert seal medium;

The deaeration valve control assembly 34 is opened, the inerting medium in the air source container 33 is cooled, throttled and decompressed to the gas phase space A of the material container;

Under the action of the gas source servo device 3, a continuous or pulsed forced convection cycle and temperature reduction of the inert seal medium is formed in the gas phase space A for continuously purifying the inert seal medium and reducing the material vapor concentration;

Under the action of the gas source servo device 3, the air-tight space medium in the gas phase space A is continuously discharged along the penetration hole on the dome structure 2 to prevent air from entering the gas phase space A;

The outer floating roof tank 1 and its materials are protected by "there is a theoretical probability of an overall chemical explosion and/or physical explosion".

In the embodiment shown in Figure 1, a manhole assembly is provided on the dome structure 2. Corresponding QHSE storage and transportation party The method may further comprise the step of oxygen-suppression and nitrogen charging of the outer floating roof tank 1:

Opening the manhole assembly such that the gas phase space A of the outer floating roof tank 1 communicates with the atmosphere through the manhole assembly;

Inputting materials to the outer floating roof tank 1;

When the floating tray 11 is lifted to the highest height position with the liquid level of the material, the manhole assembly is closed;

Starting the air source servo device 3, outputting the material in the outer floating top tank 1 so that the floating tray 11 descends with the liquid level of the material, and the idle sealing medium in the air source servo device 3 passes through the idle sealing pipeline Filling the gas phase space A;

The oxygen content in the gas phase space is measured until the design specification is reached.

In the foregoing embodiments including the saturation purification module and the micro differential pressure purification assembly, the QHSE storage and transportation method may further implement a forced purification step, that is, when the predetermined gas content sensor detects the content of methane and/or non-methane total hydrocarbons. When the purge start threshold is preset, the gas source servo device 3 starts a gas collection program and drives a gas supply program to form a forced circulation of the inert seal medium in the gas phase space A; the inert seal medium to be purified Purifying through the micro differential pressure purification assembly and the saturation purification assembly; the purged inerting medium is replenished to the gas phase space A through the gas supply program until the gas content sensor detects Stop when the stop threshold is preset.

In the foregoing embodiment including the gas source purification unit, the QHSE storage and transportation method may further implement a forced purification step, that is, when the predetermined gas content sensor detects the content of oxygen and/or nitrogen to preset a purification start threshold, The air source servo device 3 activates a gas collection program and drives a gas supply program to form a forced circulation of the inerting medium in the gas phase space A; the gas source purification unit obtains an inertial sealing medium to be purified by itself. Purification; the purified inertial seal medium is supplied to the gas phase space A via the gas supply program until the gas content sensor detects a preset shutdown threshold and stops the gas collection process and the gas supply program.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be exhaustive, and the present invention is described in detail with reference to the preferred embodiments. It should be understood that the specific embodiments or processes of the present invention may be modified or equivalently substituted for some of the technical features; therefore, the technical solutions or processes that do not depart from the spirit of the present invention should cover the technical solutions claimed in the present invention. In the range.

Claims

A circulating idle sealing system for a floating roof tank based on a dome, comprising: an outer floating roof tank (1), a dome structure (2), an idle sealing pipeline and a gas source servo device (3), The top of the tank wall of the outer floating roof tank (1) is closed by constructing the dome structure (2), the dome structure (2) and the inner wall of the outer floating roof tank (1), the floating tray (11) and the seal The device (13) collectively encloses a gas phase space (A) that is insulated from the atmosphere for filling the inert seal medium, which is a gas-type fire-fighting medium applied by a suffocating fire-fighting method; 3) gas-phase connection and valve-controlled communication with the gas phase space (A) through the inert seal line for feedback control of the state of the idle seal medium in the gas phase space (A).
The system of claim 1 , wherein the gas source servo device comprises a servo constant pressure unit, and the servo constant pressure unit comprises: An incoming air compressor (31), an inflation check valve (32), a gas source container (33), and a degassing valve control assembly (34) that are in communication with the valve, wherein:

The air compressor (31) can control the start-up operation and the stop interlock in a manual, linkage and/or automatic mode to output, compress, compress and fill a portion of the inerting medium in the gas phase space (A) to The gas source container (33), and feedback control of the gas phase space (A) of the inert seal medium is maintained at a state not greater than a preset pressure parameter;

An inflation check valve (32) is matched with a rated exhaust pressure of the incoming air compressor (31), and is disposed at an exhaust side of the incoming air compressor (31) and the air source container (33) a pipeline between the gas source container (33) for storing the working gas and accumulating pressure potential energy;

The gas source container (33) is matched with the rated exhaust pressure and the preset storage amount of the incoming gas compressor (31) for providing and storing the inerting medium filled in the gas phase space (A) ;with

The degassing valve control assembly (34) is capable of controlling opening and closing in a self-powering, automatic, interlocking, and/or manual mode for controlling the idle-sealing medium in the air source container (33) to be throttled and decompressed, and released to The gas phase space (A), and feedback control of the inert seal medium in the gas phase space (A) is maintained in a state not less than a preset pressure parameter.
A circulating idle seal system for an outer floating roof tank according to claim 2, wherein said air source servo device (3) has an air inlet port and a degassing port, and said air inlet port is said to be compressed by said air supply. Machine (31) The air inlet port is an air outlet of the degassing valve control assembly (34); the air sealing circuit includes an air supply line (3a) and a degassing line (3b), the dome structure (2) having an exhalation interface and an inhalation interface, wherein the exhalation interface of the dome structure (2) is sequentially connected to the air inlet port of the air source servo device (3) via the air supply line (3a) and is unidirectional The valve control port is connected, and the degassing port of the air source servo device (3) is sequentially connected to the air suction port of the dome structure (2) via a degassing line (3b) and is in a one-way valve control connection.
A circulating idle seal system for an outer floating roof tank according to claim 1, wherein said outer floating roof tank (1) has a floating tray central drain line, and an outer tank port of said floating tray central drain line The air supply servo device (3) is connected in communication via the idle sealing line.
The circulating idle seal system for an outer floating roof tank according to claim 3, wherein the incoming gas compressor (31) further comprises a pressure transmitter, and the pressure transmitter is installed in the gas supply line (3a), and in communication with the incoming gas compressor (31) directly or via a control system for detecting a gas pressure variable of the gas phase space (A) and pushing for controlling the incoming gas compressor (31) The preset pressure parameter transmission signal for starting the operation and the stop interlock.
The cyclic idle seal system for an outer floating roof tank according to claim 2, wherein the servo constant pressure unit further comprises a saturation purification assembly for condensing, filtering, drawing, diverting, confluent, and recycling through the self. a condensable gas in the inert seal medium, the saturated purge assembly being connected in series between the charge check valve (32) to the gas source container (33), or to the charge check valve (32) to The pipelines between the gas source containers (33) are arranged in parallel, and are connected and connected by the first switching valve group.
The cyclic idle sealing system for an outer floating roof tank according to claim 6, wherein the saturated purification assembly comprises a pressure-type gas-liquid separation device, a first back pressure valve, a purification product diverter valve tube and a liquid. a phase product collection vessel, wherein the pressurized gas-liquid separation device is matched with a rated exhaust pressure of the incoming gas compressor (31), and a bottom thereof passes through the purification product diverter valve tube and the liquid phase product The collection container is unidirectionally connected and is connected to the liquid phase valve; the first back pressure valve is disposed in the degassing side line of the pressurized gas-liquid separation device.
The cyclic idle seal system for an outer floating roof tank according to claim 2, wherein the servo constant pressure unit further comprises a micro differential pressure purification assembly for filtering, drawing, and guiding under a micro differential pressure condition. Converging and recovering condensable gas flowing through its own inert seal medium, the micro differential pressure purification assembly is arranged in series in the incoming gas line (3a), or is arranged in parallel with the incoming gas line (3a), by the second Switching valve group switching Connected to the connection.
The cyclic idle seal system for an outer floating roof tank according to claim 8, wherein the micro differential pressure purification assembly comprises a micro differential pressure gas-liquid separation device, a purification product diverter valve tube, and a liquid product collection container. The bottom of the micro-pressure gas-liquid separation device is unidirectionally connected to the liquid product collection container via the purification product diverter valve tube and is connected to the liquid phase valve.
The cyclic idle seal system for an outer floating roof tank according to claim 2, wherein the servo constant pressure unit further comprises a servo temperature adjustment component, and the servo temperature adjustment component comprises: a temperature transmitter, an air seal a medium cooling device and/or an inerting medium heating device, wherein the temperature transmitter is installed in the idler line, with the incoming gas compressor (31) and/or the degassing valve control assembly (34) directly or via a control system communication connection for detecting a temperature variable of the gas phase space (A) in real time, and pushing a preset temperature parameter transmission signal to cause the incoming gas compressor (31) to start up Or a shutdown interlock, and/or the degassing valve control assembly (34) is opened and closed; the inerting medium cooling device is mounted on an exhaust side of the incoming gas compressor (31); the inerting medium is heated The apparatus is mounted in the degassing valve control assembly (34).
The circulating idle seal system for an outer floating roof tank according to claim 2, wherein the gas source servo device (3) further comprises a gas source purifying unit for separating, guiding and collecting the idle seal flowing through itself Non-condensing impurity gases in the medium.
The circulating air-sealing system for an outer floating roof tank according to claim 11, wherein the gas source purifying unit comprises: a third switching valve group and a non-condensable impurity gas removing unit, the non-condensable impurity gas The removal unit is arranged in parallel with the pipeline between the gas-filled check valve (32) and the gas source container (33), and is connected and connected by the third switching valve group for linkage, automatic and \ or manual mode to remove non-condensable or difficult to condense-like impurity gases in the inert seal medium, the impurity gases including at least oxygen.
A circulating idle seal system for an outer floating roof tank according to claim 12, wherein said incoming gas compressor (31) further comprises a predetermined gas content sensor mounted on said idler line, respectively The incoming air compressor (31) and the third switching valve group are directly or in communication connection with the control system for detecting a predetermined gas content in the gas phase space (A) and pushing a predetermined gas content parameter transmission signal in real time. The incoming air compressor (31) is automatically controlled to start or stop interlocking, and the third switching valve group is automatically controlled to perform switching.
A cyclic idle seal system for an outer floating roof tank according to claim 13, wherein said The predetermined gas content sensor is a gas content sensor of at least one or a combination of oxygen, nitrogen, methane, and non-methane total hydrocarbons.
The cyclic idle sealing system for an outer floating roof tank according to claim 1, wherein the dome structure (2) is provided with a manhole assembly, and the manhole assembly comprises a manhole housing having a through hole (22) And a manhole cover (21) that can be hermetically sealed with the through hole, the mandrel body (22) being sealingly connected to the dome structure (2), and in the manhole block (22) and A floating escalator (12) is disposed between the floating trays (11), and the manhole cover body (21) can be opened when a worker enters and exits the gas phase space (A), and passes through the through hole by a worker. After the closed cover.
The cyclic idle sealing system for an outer floating roof tank according to claim 15, wherein a manhole compartment (23) is further disposed above the manhole assembly for replacement of a worker into the gas phase space (A) ) Required self-contained breathing apparatus and / or special tools for storage.
A circulating air-sealing system for an outer floating roof tank according to claim 16, wherein a partition wall is vertically provided in the manhole compartment (23), and a closed compartment is provided on the partition wall The door, the bulkhead and the closed hatch divide the interior space of the manhole compartment (23) into a venting compartment and a closed compartment, wherein the venting compartment has a door (24) for personnel access and/or facilitates ventilation Window for staff to replace spontaneous breathing apparatus and / or storage special tools; the airtight compartment is disposed above the manhole assembly to reduce the amount of air entering the gas phase space (A).
The cyclic idle seal system for an outer floating roof tank according to claim 1, wherein the dome structure (2) is a hard or soft gas-impermeable structure having a skeleton or a skeleton.
The cyclic idle seal system for an outer floating roof tank according to claim 18, wherein the airtight structure having a skeleton comprises a support skeleton and a gas-impermeable hard material or a film structure mounted between the support skeletons. .
The cyclic idle seal system for an outer floating roof tank according to claim 18, wherein the skeleton-free gas impermeable structure is a gas-impermeable rubberized fabric or a soft chemical film, and the skeleton-free gas-tight structure The force that is formed to overcome its own weight is provided by the pressure of the inerting medium in the gas phase space (A).
The cyclic idle sealing system for an outer floating roof tank according to claim 1, wherein the dome structure (2) is a gas-tight structure capable of generating a Faraday cage lightning protection effect for preventing lightning and static electricity damage, And blasting the wall warhead in response to a shaped charge attack.
A cyclically inerting system for an outer floating roof tank according to claim 1, further comprising a solar energy utilization system, wherein a battery panel or membrane of said solar energy utilization system is disposed in said dome structure (2) and/or The outer wall surface of the outer floating roof tank (1).
The circulating idle sealing system for an outer floating roof tank according to claim 3, wherein an explosion-proof buffer container is further connected in series with the air supply line (3a) and/or the air removal line (3b), and the partition A flame retardant material is installed in the explosion buffer container.
The circulating idle sealing system for an outer floating roof tank according to claim 23, wherein the outer floating roof tank (1) is disposed in parallel with at least two, and the explosion-proof buffering container comprises a gas explosion-proof buffer container. And a degassing explosion-proof buffer container having at least two incoming gas input ports and a common incoming gas output port, the degassing explosion-proof buffer container having a common degassing input port and At least two degassing output ports, wherein the exhalation ports of each of the outer floating roof tanks (1) are connected to the incoming gas inlet ports of the incoming gas explosion-proof buffer containers via respective corresponding air supply lines (3a) Connected to the incoming air outlet port of the incoming air explosion-proof buffer container via the common incoming air line (3a) and the air supply port of the air source servo device (3); the air source servo The degassing port of the device (3) is connected to the degassing input port of the degassing explosion-proof buffer container via a common degassing line (3b), and the degassing output port of the degassing explosion-proof buffer container is respectively a degassing line (3b) is connected to the suction interface of each of the outer floating roof tanks (1)
The circulating idle sealing system for an outer floating roof tank according to claim 24, wherein the gas explosion-proof buffer container further has an interface for receiving external air to input an inert or sealed inert sealing medium; The degassing explosion-proof buffer container also has an interface for degassing the external output for externally outputting a pure inert sealing medium.
The circulating idle sealing system for an outer floating roof tank according to claim 2, wherein the air source servo device (3) further comprises a monitoring and early warning unit for performing internal monitoring and externally pushing the warning signal.
A QHSE storage and transportation method for a circulating idle sealing system for an outer floating roof tank according to any one of claims 1 to 26, characterized in that it comprises a servo large breathing step:

The gas source servo device (3) detects a pressure variable for characterizing the gas phase space (A) gas state in real time; when the outer floating roof tank (1) inputs material, the floating plate (11) and the The sealing device (13) is lifted with the liquid surface and the gas phase space (A) is gradually reduced, so that the pressure variable rises to the first preset pressure At the force threshold, the gas source servo device (3) starts a gas collection program, transfers, compresses, and stores a portion of the inert gas sealing medium in the gas phase space (A) into the gas source servo device (3). Stopping the gas collection process until the pressure variable falls back to a second preset pressure threshold that is not higher than the first preset pressure threshold;

When the outer floating roof tank (1) outputs material, the floating tray (11) and the sealing device (13) fall with the liquid surface and the gas phase space (A) gradually expands, causing the pressure variable to decrease When the third preset pressure threshold is not higher than the second preset pressure threshold, the gas source servo device (3) activates a gas supply program to store the inertia stored in the gas source servo device (3) The sealing medium is throttled and depressurized and released to the gas phase space (A) until the pressure variable rises to the second predetermined pressure threshold to stop the gas supply process.
The QHSE storage and transportation method according to claim 27, further comprising the step of servo small breathing:

When the gas phase space (A) rises due to a change in ambient temperature, and the pressure variable rises to a first preset pressure threshold, the gas source servo device (3) starts a gas collection process, and the gas phase is A portion of the inerting medium in the space (A) is transferred, compressed, and stored to the air source servo (3) until the pressure variable falls back to a second preset pressure threshold that is not higher than the first preset pressure threshold. Stopping the gas collection procedure;

The gas source servo device (3) when the gas phase space (A) drops due to a change in ambient temperature and the pressure variable drops to a third preset pressure threshold that is not higher than the second preset pressure threshold Starting a gas supply process, throttling and decompressing the inert seal medium stored in the gas source servo device (3), releasing to the gas phase space (A) until the pressure variable rises to The gas supply process is stopped when the second preset pressure threshold is reached.
The QHSE storage and transportation method according to claim 27, wherein the dome structure (2) is a gas-tight structure capable of generating a Faraday cage lightning protection effect, and is used for preventing lightning or static damage, and igniting the energy-packing device. The broken wall warhead of the medicine; also includes the steps of the blasting wall warhead:

When the shaped charge is close to the dome structure (2) having the Faraday cage lightning protection effect, the guiding device regards the dome structure (2) as the tank top, so that the broken wall warhead penetrates and breaks Wall, opening; when the secondary warhead enters the gas phase space (A), its detonating device cannot detonate the secondary warhead in an effective or optimal high-explosive height, which penetrates the floating disk (11) and allows it to follow The combat purpose of the warhead in the material is difficult to achieve; the floating disk (11) is protected when the accompanying warhead detonates in the gas phase space; the fighting purpose of the shaped charge cannot be achieved In turn, the outer floating roof tank (1) and its materials are protected.
The QHSE storage and transportation method according to claim 27, further comprising the step of generating a defensive combat force:

Operating the cyclically nested sealing system and detecting gas state variables inside or outside the gas phase space of the material container in real time;

When the accumulating charge is successfully detonated in the inert atmosphere medium and/or material of the gas phase space (A) of the outer floating roof tank (1), the detonation energy is inerted by the inert gas Absorbing, absorbing and/or being digested by the idler line to the gas source servo (3) for further absorption and absorption;

The detonation energy triggers the air source servo to initiate a forced cooling program: a force from the incoming air compressor (31), and a partial inertia in the gas phase space (A) through the incoming gas line (3a) The sealing medium is transferred, compressed, and filled to the gas source container (33), and the inerting medium is cooled;

The degassing valve control assembly (34) is opened, the inerting medium in the gas source container (33) is cooled, throttled and decompressed to the gas phase space (A) of the material container;

Under the action of the gas source servo device (3), a continuous or pulsed forced convection cycle and temperature reduction of the inert seal medium is formed in the gas phase space (A) for continuously purifying the inert seal medium and reducing Material vapor concentration;

Under the action of the gas source servo device (3), the inert seal medium in the gas phase space (A) is continuously discharged along the penetrating holes in the dome structure (2) to prevent air from entering the gas phase. Space (A); the outer floating roof tank (1) and its materials are protected by "there is a theoretical probability of an overall chemical explosion and/or physical explosion".