CN210556981U - Comprehensive safety exhaust system for petrochemical wharf and storage - Google Patents

Abstract

The utility model discloses a safe exhaust system is synthesized in petrochemical industry pier and storage, pier interchange station, middle buffer tank, exhaust gas separator, pier main process pipeline and the reservoir area main process pipeline among this safe exhaust system is synthesized in petrochemical industry pier and storage form the pipeline exhaust subsystem of petrochemical industry pier to oil depot technology, and the storage tank exhaust subsystem of interior floating roof storage tank, diffusion tube subassembly and interior floating plate formation interior floating roof storage tank. The pipeline exhaust subsystem of the petrochemical wharf-to-oil depot process is used for exhausting gas in a pipeline, and the storage tank exhaust subsystem of the inner floating roof storage tank is used for further exhausting residual gas which is not completely treated by the pipeline exhaust subsystem. Through the two subsystems, the exhaust process is completely finished.

Description

Comprehensive safety exhaust system for petrochemical wharf and storage

Technical Field

The utility model belongs to the technical field of the oil transportation technique and specifically relates to a safe exhaust system is synthesized in petrochemical industry pier and storage.

Background

In the storage operation of a petrochemical wharf, oil products of ships at the wharf berth are required to be conveyed to a storage tank in a storage area. Generally, the flow of oil through the ball passing process is as follows: the equipment at the wharf berth (a wharf pigging valve and the like) → the main process pipeline of the wharf → the exchange station → the main process pipeline of the reservoir area → the equipment at the tank group (a pump shed pigging valve, an inner floating roof storage tank and the like). The power source of the ball passing process is compressed gas.

In order to facilitate metering settlement, the wharf ship is usually subjected to tank sweeping operation after oil discharge is completed, and a large amount of compressed gas is generated in the tank sweeping process, and if the compressed gas is not treated, the compressed gas enters a reservoir area process pipeline after being directly filled into a wharf process pipeline along with oil products, so that the gas easily enters an inner floating roof storage tank, damages an inner floating disc and even causes safety accidents. Meanwhile, a small amount of compressed gas can also enter the inner floating roof storage tank in the downstream reservoir area due to the influences of air leakage of the end face of the pipe cleaner, hose blowing operation, defects of process equipment and the like, and the equipment such as the inner floating roof storage tank and the like is also easily damaged.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a safe exhaust system is synthesized in petrochemical industry pier and storage, its compressed gas that can discharge prevents that the internal floating roof storage tank from damaging.

The utility model discloses a solve the technical scheme that its technical problem adopted and be:

a petrochemical wharf and storage comprehensive safe exhaust system comprises a wharf exchange station, and comprises a wharf ball receiving barrel connected with a wharf main process pipeline, a storage area ball sending barrel connected with a storage area main process pipeline, and a bypass pipe connected with the wharf main process pipeline and the storage area main process pipeline, wherein a first valve, a second valve and a third valve are arranged on the bypass pipe; the middle buffer tank is connected with a feed pipe and a discharge pipe, the feed pipe and the discharge pipe are both connected to the bypass pipe, the joint of the feed pipe and the bypass pipe is positioned between the first valve and the second valve, the joint of the discharge pipe and the bypass pipe is positioned between the second valve and the third valve, the feed pipe is provided with at least one fourth valve, and the discharge pipe is provided with at least one fifth valve; the inner floating roof storage tank is connected with a main process pipeline of the reservoir area, and a pipe cleaning valve is arranged at one side of the main process pipeline of the reservoir area, which is close to the inner floating roof storage tank; the diffusion pipe assembly comprises an eccentric reducing pipe, a diffusion pipe positioned at the bottom of the inner floating roof storage tank and a storage tank feeding pipe arranged on the tank wall at the bottom of the inner floating roof storage tank, wherein the small end of the eccentric reducing pipe is connected with the storage tank feeding pipe, the large end of the eccentric reducing pipe is connected with the diffusion pipe, a plurality of diffusion holes are formed in the pipe wall of the diffusion pipe, and the top of the tail end of the diffusion pipe is hinged with an anti-impact baffle; the inner floating plate is arranged in the inner floating roof storage tank, floats up and down along with the liquid level, and is provided with a plurality of inner floating plate vent valves positioned above the diffusion pipe.

According to the utility model discloses the first aspect a petrochemical industry pier and storage comprehensive safety exhaust system, middle buffer tank upper end is connected with the exhaust gas separator through the blast pipe, be provided with the tenth valve on the blast pipe, the tenth valve passes through the pipeline and can be connected with nitrogen device.

According to the utility model discloses the first aspect a petrochemical industry pier and storage comprehensive safety exhaust system, middle buffer tank sets up in pier interchange station one side.

According to the utility model discloses the first aspect a petrochemical industry pier and storage comprehensive safety exhaust system, the diffusion hole sets up on the lower semicircle pipe wall of diffusion tube, diffusion hole circumference central line and the contained angle that passes between the horizontal plane in diffusion tube axle center are not more than 60.

According to the utility model discloses the first aspect a safe exhaust system is synthesized in petrochemical industry pier and storage, the microcephaly end of eccentric reducing pipe is connected with the storage tank inlet pipe through the flange.

According to the utility model discloses the first aspect a petrochemical industry pier and storage comprehensive safety exhaust system, the diffusion tube lower extreme passes through the support mounting in the floating roof storage tank bottom, the support includes horizontal spacing support and full spacing support, and horizontal spacing support is arranged in proper order with the oil feed direction of full spacing support along the diffusion tube.

According to the utility model discloses the first aspect a safe exhaust system is synthesized in petrochemical industry pier and storage, horizontal spacing support is including the first diaphragm and two first curb plates of locating the diffusion tube both sides that support the diffusion tube bottom.

According to the utility model discloses the first aspect a petrochemical industry pier and storage comprehensive safety exhaust system, full spacing support is including supporting the second diaphragm of diffusion tube bottom, two minutes locate the second curb plate of diffusion tube both sides and set up in the third diaphragm at diffusion tube top.

According to the utility model discloses the first aspect a petrochemical industry pier and storage comprehensive safety exhaust system, interior floating roof storage tank top side is provided with a jar wall air vent.

According to the utility model discloses the first aspect a safe exhaust system is synthesized in petrochemical industry pier and storage, a plurality of interior floating plate vent valve have been seted up on the interior floating plate, the floating plate vent valve is followed the diffusion tube axis symmetric distribution in one of them part, the floating plate vent valve is located the terminal outside of diffusion tube relatively in the other part.

The utility model has the advantages that: the wharf exchange station, the intermediate buffer tank, the exhaust gas separator, the wharf main process pipeline and the reservoir area main process pipeline in the petrochemical wharf and storage comprehensive safe exhaust system form a pipeline exhaust subsystem of a petrochemical wharf-to-oil reservoir process, and the inner floating roof storage tank, the diffusion pipe assembly and the inner floating plate form a storage tank exhaust subsystem of the inner floating roof storage tank. The pipeline exhaust subsystem of the petrochemical wharf-to-oil depot process is used for exhausting gas in a pipeline, and the storage tank exhaust subsystem of the inner floating roof storage tank is used for further exhausting residual gas which is not completely treated by the pipeline exhaust subsystem. Through the two subsystems, the exhaust process is completely finished.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the described figures are only some embodiments of the invention, not all embodiments, and other designs and figures can be obtained by those skilled in the art without inventive effort, based on these figures:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram (reservoir area process pipeline irrigation flow) of the present invention;

FIG. 3 is a schematic structural diagram (pipeline irrigation process in wharf process);

fig. 4 is a schematic structural diagram (unloading process) of the present invention;

FIG. 5 is a schematic structural view (a cabin sweeping process) of the present invention;

fig. 6 is a schematic structural diagram (wharf process pipeline ball-passing process) of the present invention;

FIG. 7 is a schematic structural diagram of the present invention (flow of material in the intermediate buffer tank into the inner floating roof tank);

FIG. 8 is a schematic view of the inner floating roof tank according to the preferred embodiment of the present invention;

fig. 9 is a schematic structural view of a diffuser assembly, a bracket and an anti-impact baffle according to a preferred embodiment of the present invention;

3 FIG. 3 10 3 is 3 a 3 schematic 3 view 3 of 3 a 3 portion 3 of 3 FIG. 3 9 3 taken 3 at 3 A 3- 3 A 3; 3

FIG. 11 is a schematic view of a portion of FIG. 9 taken at B-B;

FIG. 12 is a cross-sectional view of a preferred embodiment of the diffuser of the present invention;

fig. 13 is a top view of the inner floating roof tank in the preferred embodiment of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.

The existing oil product tank group ball passing process generally comprises wharf berth equipment (a wharf pigging valve and the like), a wharf main process pipeline, an exchange station, a reservoir area main process pipeline and tank group equipment (a pump shed pigging valve, an inner floating roof storage tank and the like).

The ball passing and sweeping mode generally comprises a ball sending cylinder, a ball collecting cylinder, pipe cleaners (generally commonly called 'ball passing'), a gas supply line and the like, wherein the ball sending cylinder and the ball collecting cylinder are respectively arranged at the head end and the tail end of a wharf main process pipeline or a storage area main process pipeline, and the pipe cleaners utilize compressed gas of the gas supply line to start from the ball sending cylinder, move along the pipeline and push oil products, so that a ball passing process is realized, and the oil products are conveyed along the pipeline.

However, during the cabin sweeping operation of the ship and the working process of the conventional ball passing process, the compressed gas enters the pipeline along with the oil product and finally enters the inner floating roof storage tank, which may cause accidents such as damage and overturn of the inner floating disc.

Therefore, the present embodiment provides a petrochemical terminal and warehouse integrated safety exhaust system, and referring to fig. 1, the petrochemical terminal and warehouse integrated safety exhaust system includes a terminal exchange station 100, an intermediate buffer tank 200, an exhaust gas separator 300, a terminal main process pipeline 400, a reservoir main process pipeline 500, an inner floating roof storage tank 510, a diffuser assembly 700, and an inner floating plate 800. Wherein the dock exchange station 100, the intermediate buffer tank 200, the spent gas separator 300, the dock main process piping 400, and the reservoir main process piping 500 form a piping exhaust subsystem for a petrochemical dock-to-oil reservoir process, and the inner floating roof tank 510, the diffuser pipe assembly 700, and the inner floating floor 800 form a tank exhaust subsystem for the inner floating roof tank.

The pipeline exhaust subsystem of the petrochemical wharf-to-oil depot process is used for exhausting gas in a pipeline, and the storage tank exhaust subsystem of the inner floating roof storage tank is used for further exhausting residual gas which is not completely treated by the pipeline exhaust subsystem. Through the two subsystems, the exhaust process is completely finished.

For the pipeline exhaust subsystem and the storage tank exhaust subsystem, the following are explained one by one:

referring to fig. 1-7, the ducted exhaust subsystem includes a dock exchange station 100, an intermediate buffer tank 200, a spent gas separator 300, a dock main process duct 400, and a depot main process duct 500.

Wherein, referring to fig. 1, the wharf exchange station 100 includes a wharf ball receiving barrel 110 connected to the wharf main process pipe 400, a reservoir ball sending barrel 120 connected to the reservoir main process pipe 500, and a bypass pipe 130 connected to the wharf main process pipe 400 and the reservoir main process pipe 500, the bypass pipe 130 is provided with a first valve 131, the second valve 132 and the third valve 133, the return pipe 140 is connected between the dock ball collecting barrel 110 and the storage area ball distributing barrel 120, the sixth valve 141 is arranged on one side of the dock ball collecting barrel 110 of the return pipe 140, the seventh valve 142 is arranged on one side of the storage area ball distributing barrel 120 of the return pipe 140, the bypass pipe 130 is connected with the return pipe 140 through the connecting pipe 134, the connecting part of the connecting pipe 134 and the return pipe 140 is positioned between the sixth valve 141 and the seventh valve 142, the eighth valve 111 is arranged between the bypass pipe 130 and the dock ball collecting barrel 110 of the dock main process pipeline 400, and the ninth valve 121 is arranged between the bypass pipe 130 and the storage area ball distributing barrel 120 of the storage area main process pipeline 500.

The intermediate buffer tank 200 is connected with a feed pipe 210 and an exhaust pipe 220, the feed pipe 210 and the exhaust pipe 220 are both connected to the by-pass pipe 130, the connection position of the feed pipe 210 and the by-pass pipe 130 is positioned between a first valve 131 and a second valve 132, the connection position of the exhaust pipe 220 and the by-pass pipe 130 is positioned between a second valve 132 and a third valve 133, the feed pipe 210 is provided with at least one fourth valve 211, and the exhaust pipe 220 is provided with at least one fifth valve 221; the exhaust gas separator 300 is connected to the intermediate buffer tank 200.

Therefore, the exhausting system of the process pipeline from the petrochemical wharf to the oil depot realizes the discharge of compressed gas in the process pipeline through the intermediate buffer tank 200 and the exhaust gas separator 300, prevents the compressed gas from entering the inner floating roof storage tank 510 along with the discharge, and further effectively prevents the occurrence of accidents such as damage and overturn of the inner floating plate.

Further, the intermediate buffer tank 200 is a horizontal buffer tank. The middle buffer tank 200 is horizontal, so that the gas-liquid separation efficiency can be increased, and the discharge of compressed gas is further accelerated.

Further, the intermediate buffer tank 200 is provided at the side of the wharf exchange station 100. The middle buffer tank 200 occupies a small area, can be flexibly arranged on one side of the wharf exchange station 100, can avoid the pipeline from being additionally provided with facilities such as a pipeline sweeping pipe and the like, and solves the problem of actual space.

Further, the exhaust gas separator 300 is connected to the upper end of the intermediate buffer tank 200 through an exhaust pipe 600. The exhaust gas separator 300 is connected to the upper end of the intermediate buffer tank 200, thereby improving the exhaust efficiency and promoting the process to be performed more smoothly.

Further, a tenth valve 610 is disposed on the exhaust pipe 600, and the tenth valve 610 may be connected to the nitrogen device through a pipe. The tenth valve 610 is connected to a nitrogen device to charge the intermediate buffer tank 200, so that the material in the intermediate buffer tank 200 can be discharged.

Further, the dock main process pipe 400 may be connected to the vessel 410 to be unloaded, and the depot main process pipe 500 is connected to the inner floating roof tank 510. The process pipeline from the wharf to the reservoir area utilizes a pipeline exhaust system to realize the discharge of compressed gas in the process pipeline, and the compressed gas is prevented from entering the inner floating roof storage tank 510 along with the discharge, so that the accidents of damage, overturn and the like of the inner floating plate are effectively prevented.

The above pipe exhaust subsystem includes but is not limited to the following process modes: 1. a reservoir area process pipeline filling process; 2. a wharf process pipeline filling process: 3. unloading process; 4. a cabin sweeping process; 5. a wharf process pipeline ball passing process; 6. and (4) feeding the materials in the middle buffer tank into the inner floating roof storage tank. Now, the following are described:

1. the process of reservoir area process pipeline filling refers to fig. 2 (the thick pipeline in fig. 2 is the material flow direction):

and opening the second valve 132, the third valve 133 and the fourth valve 211, opening a pump at one side of the storage area, and conveying the materials to the intermediate buffer tank 200 through a main process pipeline 500 of the storage area. Finally, the main process piping 500 in the depot area is filled with material and the gas during the filling process is vented through the intermediate surge tank 200.

2. A pipeline filling process of the wharf process pipeline, which refers to fig. 3 (the thickened pipeline in fig. 3 is a material flow direction);

the first valve 131 and the fourth valve 211 are opened, the pump is started at one side of the ship, and the materials are conveyed to the middle buffer tank 200 through the wharf main process pipeline 400. Finally, the dock main process pipe 400 is filled with material and the gas during the filling process is vented through the intermediate surge tank 200.

3. Unloading process, refer to fig. 4 (the bold line in fig. 4 is the material flow direction);

and opening the first valve 131, the second valve 132 and the third valve 133, starting a pump at one side of the ship, and discharging the materials through the wharf main process pipeline 400, the by-pass pipe 130, the reservoir area main process pipeline 500 and finally the inner floating roof storage tank 510.

4. A tank sweeping process, which refers to fig. 5 (the thickened pipeline in fig. 5 is the material flow direction);

opening the first valve 131, the fourth valve 211, the fifth valve 221 and the third valve 133, starting a pump at one side of the ship, and enabling the materials to pass through the wharf main process pipeline 400, the middle buffer tank 200 and the reservoir area main process pipeline 500 and finally reach the inner floating roof storage tank 510 to finish the cabin sweeping; during the cabin sweeping process, the gas in the main process pipeline 400 section of the wharf is exhausted through the intermediate buffer tank 200.

5. A wharf process pipeline ball passing process refers to fig. 6 (a thickened pipeline in fig. 6 is a material flow direction);

and opening the fourth valve 211, the sixth valve 141 and the eighth valve 111, starting a pump on one side of the ship, enabling the materials to pass through the wharf main process pipeline 400, the wharf ball collecting barrel 110 and the return pipe 140, finally reaching the intermediate buffer tank 200, discharging the gas, and simultaneously collecting the pig into the wharf ball collecting barrel 110.

6. The flow of feeding the materials in the intermediate buffer tank into the inner floating roof storage tank refers to fig. 7 (the thickened pipeline in fig. 7 is the material flow direction);

6.1 flow when the material in the middle buffer tank is normal: and opening the third valve 133, the fifth valve 221 and the tenth valve 610, connecting the tenth valve 610 with a nitrogen device through pipelines, and feeding gas through the nitrogen device, so that the material in the intermediate buffer tank 200 is discharged through the reservoir area main process pipeline 500 and finally reaches the inner floating roof storage tank 510.

6.2 flow when the material in the middle buffer tank is less: except according to the normal flow of the materials in the 6.1 intermediate buffer tank, measures such as stopping supplying gas to close a valve or temporarily connecting a diaphragm pump to invert the tank after pressure relief and the like can be taken to avoid gas from entering a main process pipeline of a reservoir area.

It should be noted that, the above six process modes should be sequentially performed to avoid the gas from entering the process pipeline in the reservoir area.

After the treatment by the pipeline exhaust subsystem, part of gas is not exhausted, and the rest gas needs to be further treated by the storage tank exhaust subsystem.

Referring to fig. 8-13, the tank venting subsystem includes an inner floating roof tank 510, a diffuser assembly 700, and an inner floating floor 800. Storage tank exhaust subsystem passes through eccentric reducing pipe 710, the preliminary oil and the gas flow rate that reduces of diffuser pipe 720, further deceleration pressure release of a plurality of diffusion holes 221 on the rethread diffuser pipe 720, the guide oil gas flow direction, stable gaseous emission, gaseous to interior floating plate 800 upper portion gas phase space in the quick discharge oil of interior floating plate breather valve 810 that the rethread arranged around diffuser pipe 720, last gaseous outside through jar wall air vent 511 discharge jar, thereby flow rate when effectively reducing the oil feed, realize safe exhaust simultaneously, prevent that interior floating plate 800 from damaging.

Referring to fig. 1 to 7, the inner floating roof tank 510 is connected to a reservoir main process pipe 500, and a pipe cleaning valve 520 is disposed on one side of the reservoir main process pipe 500 close to the inner floating roof tank 510. The pig valve 520 has both valve and ball collection functions. Preferably, the pigging valve 520 is an isolation pigging ball valve,

the ball collecting function of the pigging valve 520 is matched with the ball sending barrel 120 in the storage area, and when the wharf exchange station 100 is long and the main process pipeline 500 in the storage area needs to be pigged and measured, oil products discharged from the main process pipeline 500 in the storage area can be matched to enter a tank, so that the front section pigging of the main process pipeline 500 in the storage area is completed.

When the pig reaches the pig valve 520, the pig valve 520 forms a seal, isolating the pig backend gas, thereby performing the valve shut-off and isolation functions.

Further, referring to fig. 8, 9 and 13, the diffuser assembly 700 includes an eccentric reducer 710, a diffuser 720 and a feed pipe 730.

Wherein, referring to fig. 8, the diffuser pipe 720 is located at the bottom of the inner floating roof tank 510. In this embodiment, the diffuser pipe 720 terminates at the bottom of the inner floating roof tank 510 near the center of the inner tank.

Meanwhile, referring to fig. 8, a feed pipe 730 is installed on the bottom wall of the inner floating roof tank 510. Specifically, one end of the feed pipe 730 is externally disposed outside the inner floating roof tank 510 so as to be connected to an oil pipe, and the other end of the feed pipe 730 is located in the inner floating roof tank 510.

Generally, the eccentric reducer 710 includes large and small ends to accommodate pipes of different diameters. In this embodiment, referring to fig. 8 and 9, the small end of the eccentric reducer 710 is connected to the feed pipe 730, and the large end of the eccentric reducer 710 is connected to the diffuser 720. As is readily apparent from the basic principles of hydrodynamics, as the pipe diameter increases, the oil flow rate slows as it flows from the inlet pipe 730 into the diffuser pipe 720.

Referring to fig. 8 and 9, the wall of the diffuser pipe 720 is provided with a plurality of diffusion holes 221, oil flows into the inner floating roof tank 510 through the plurality of diffusion holes 221, the total flow area of the diffuser pipe 720 is effectively increased by the diffusion holes 221, and the flow rate of the oil in the diffuser pipe 720 is further reduced.

Referring to fig. 8, 9 and 13, an inner float 800 is disposed inside the inner floating roof tank 510 to float up and down with the liquid level, the inner float 800 having a plurality of inner float vent valves 810 located above the diffuser pipe 720. As the oil is discharged through the diffusion holes 221, a large amount of gas is also discharged along with it. The internal float disk vent valve 810 allows gas to be rapidly discharged from the liquid level below the internal float disk 800 to the gas phase space above, reducing the impact of the gas on the internal float disk 800.

Referring to fig. 9 and 12, the diffusion holes 221 are formed in the lower semicircular wall of the diffusion pipe 720 to extend the moving path of oil and gas, increase the escape time of gas in the oil in the inner floating roof tank 100, and prevent the gas from flowing to the top of the diffusion pipe 720 and directly impacting the inner floating plate. Moreover, the included angle between the diffusion hole 221 and the horizontal plane 400 passing through the axis of the diffusion pipe 720 is not more than 60 degrees, so that the diffusion hole 221 is prevented from being too close to the bottom plate of the inner floating roof tank 100, and oil products and gas are prevented from scouring the bottom plate.

Referring to fig. 8 and 9, the small end of the eccentric reducer 710 is connected to the feed pipe 730 by a flange 740. The flange 740 is connected and can be ensured that eccentric reducing pipe 710 and inlet pipe 730 are connected firmly, compares in fixed connection modes such as welding simultaneously, can reduce pipeline stress, also has certain pliability, can bear the diffuser 720 because of the oil advances the deformation of the certain degree that the jar bottom plate subsides and produce, convenient to detach overhauls simultaneously.

Referring to fig. 8 and 9, the lower end of the diffuser pipe 720 is mounted to the bottom of the inner floating roof tank 510 by a bracket 900. The bottom of the inner floating roof tank 510 is a bottom plate 512. The support 900 comprises a transverse limiting support 910 and a full limiting support 920, and the transverse limiting support 910 and the full limiting support 920 are sequentially arranged along the oil inlet direction of the diffusion pipe 720. The number of the lateral limit brackets 910 is not limited to one, and may be one or more. In this embodiment, the two lateral limiting brackets 910 are sequentially arranged along the oil inlet direction of the diffusion tube 720, wherein the two lateral limiting brackets 910 and the full limiting bracket 920 are provided.

The lateral limiting bracket 910 is used to limit the lateral position of the diffuser 720, and it should be noted that the lateral direction here is the horizontal radial direction of the diffuser 720. Referring to fig. 9, the lateral limiting bracket 910 includes a first horizontal plate 912 supporting the bottom of the diffuser 720 and two first side plates 911 respectively disposed at two sides of the diffuser 720. In this embodiment, the bottom of the inner floating roof tank 510 is provided with a first mounting plate 913, the two first side plates 911 are welded on the first mounting plate 913, and two ends of the first transverse plate 912 are welded with the two first side plates 911 respectively. The first mounting plate 913 is mounted on the base plate 512.

The full limiting support 920 is used to limit any radial displacement of the diffuser 720 along itself, i.e. not only horizontal radial, vertical radial, etc., but also any radial displacement of the diffuser 720. Referring to fig. 10, the full-position-limiting support 920 includes a second horizontal plate 922 supporting the bottom of the diffuser 720, two second side plates 921 respectively disposed at two sides of the diffuser 720, and a third horizontal plate 923 disposed at the top of the diffuser 720. In this embodiment, the bottom of the inner floating roof tank 510 is provided with the second mounting plate 924, the two second side plates 921 are welded on the second mounting plate 924, the two ends of the second transverse plate 922 are welded on the two second side plates 921 respectively, and the two ends of the third transverse plate 923 are fixedly connected with the two second side plates 921 through bolts respectively. The second mounting plate 924 is mounted on the base plate 512.

The lateral limiting bracket 910 and the full limiting bracket 920 are used for limiting the position of the diffuser 720, so as to prevent the diffuser 720 from being excessively deviated when being impacted by oil and gas. Therefore, the structures of the transverse limiting bracket 910 and the full limiting bracket 920 are not limited to the embodiment of the present embodiment, and the embodiments are various, and the limiting bracket with corresponding functions can be used.

Referring to fig. 8, the inner floating roof tank 510 is provided at a top side end thereof with a tank wall vent hole 511. The tank wall vent holes 511 are used for discharging gas inside the inner floating roof tank 510, and preferably, a plurality of tank wall vent holes 511 are uniformly distributed on the top of the inner floating roof tank 510 in the circumferential direction. In this embodiment, the ends of the tank wall vents 511 are bent downward.

Referring to fig. 8 and 9, the bottom of the eccentric reducing pipe 710, the bottom of the feed pipe 730, and the bottom of the diffuser pipe 720 are all at the same level, increasing the distance between the bottom of the diffuser pipe 720 and the bottom plate of the inner floating roof tank 100, and preventing oil and gas from washing the bottom plate.

Referring to fig. 13, the inner floating plate 800 is provided with a plurality of inner floating plate vent valves 810, wherein a portion of the inner floating plate vent valves 810 are symmetrically distributed along the axis of the diffuser pipe 720, and another portion of the inner floating plate vent valves 810 are located at the outer side of the end of the diffuser pipe 720 relatively.

The plurality of inner floating disk vent valves 810 are primarily divided into two sections, with one section of the inner floating disk vent valves 810 symmetrically distributed along the axis of the diffuser 720. Referring to fig. 13, in the present embodiment, the number of the internal floating disk ventilation valves 810 in the portion includes eight, and the eight internal floating disk ventilation valves 810 are symmetrically distributed along the axis of the diffuser pipe 720 and correspond to one another. However, the number of the internal floating disk ventilation valves 810 in this portion is not limited to eight, and may be a plurality of them, and the valves are arranged according to the length of the diffuser.

The other part of the internal float disk vent valve 810 is located relatively outside the end of the diffuser pipe 720. Referring to fig. 13, in the present embodiment, the inner floating plate vent valve 810 includes three. However, the number of the inner float vent valves 810 is not limited to three, and may be plural.

The inner floating disc vent valve 810 is in a closed state under normal conditions, when enough gas is accumulated below the inner floating disc 800, the valve cover of the inner floating disc vent valve 810 is opened by the gas pressure below, so that the gas can be directly and rapidly discharged to the upper gas phase space from the inner floating disc 800 after being discharged through the diffusion holes 221, the impact of the gas on the inner floating disc 800 is reduced, and the damage of the inner floating disc 800 caused by gas impact is prevented.

Referring to fig. 8, 9 and 13, the top of the end of the diffuser pipe 720 is hinged with an anti-impact baffle 750, the diameter of the anti-impact baffle 750 is larger than that of the diffuser pipe 720, so that the oil is prevented from being sprayed out from the end of the diffuser pipe 720 at a high speed to cause overlarge impact and form rotational flow, and the oil in the inner floating roof tank 510 is prevented from being violently stirred and causing water impact and air impact to damage the inner floating plate 800.

The above embodiments are further described in the above aspects of the present invention, but it should not be understood that the scope of the above subject matter of the present invention is limited to the above embodiments, and all the technologies realized based on the above aspects belong to the scope of the present invention.

Claims (10)

1. The utility model provides a safe exhaust system is synthesized in petrochemical industry pier and storage which characterized in that: comprises that

The wharf exchange station (100) comprises a wharf ball receiving barrel (110) connected with a wharf main process pipeline (400), a storehouse area ball sending barrel (120) connected with a storehouse area main process pipeline (500) and a bypass pipe (130) connected with the wharf main process pipeline (400) and the storehouse area main process pipeline (500), wherein a first valve (131), a second valve (132) and a third valve (133) are arranged on the bypass pipe (130), a return pipe (140) is connected between the wharf ball receiving barrel (110) and the storehouse area ball sending barrel (120), a sixth valve (141) is arranged on one side of the wharf ball receiving barrel (110) of the return pipe (140), a seventh valve (142) is arranged on one side of the storehouse area ball sending barrel (120) of the return pipe (140), the bypass pipe (130) is connected with the return pipe (140) through a connecting pipe (134), and the connecting part of the connecting pipe (134) and the return pipe (140) is positioned between the sixth valve (141) and the seventh, an eighth valve (111) is arranged between the bypass pipe (130) and the ball collecting barrel (110) of the wharf main process pipeline (400), and a ninth valve (121) is arranged between the bypass pipe (130) and the ball sending barrel (120) of the reservoir main process pipeline (500);

the middle buffer tank (200) is connected with a feed pipe (210) and a discharge pipe (220), the feed pipe (210) and the discharge pipe (220) are both connected to the bypass pipe (130), the joint of the feed pipe (210) and the bypass pipe (130) is positioned between the first valve (131) and the second valve (132), the joint of the discharge pipe (220) and the bypass pipe (130) is positioned between the second valve (132) and the third valve (133), at least one fourth valve (211) is arranged on the feed pipe (210), and at least one fifth valve (221) is arranged on the discharge pipe (220);

the inner floating roof storage tank (510) is connected with the reservoir area main process pipeline (500), and a pipe cleaning valve (520) is arranged at one side, close to the inner floating roof storage tank (510), of the reservoir area main process pipeline (500);

the diffusion pipe assembly (700) comprises an eccentric reducing pipe (710), a diffusion pipe (720) positioned at the bottom of the inner floating roof storage tank (510) and a storage tank feeding pipe (730) arranged on the tank wall at the bottom of the inner floating roof storage tank (510), wherein the small end of the eccentric reducing pipe (710) is connected with the storage tank feeding pipe (730), the large end of the eccentric reducing pipe (710) is connected with the diffusion pipe (720), a plurality of diffusion holes (721) are formed in the pipe wall of the diffusion pipe (720), and the top of the tail end of the diffusion pipe (720) is hinged with an anti-impact baffle (750);

the inner floating plate (800) is arranged in the inner floating roof storage tank (510), floats up and down along with the liquid level, and is provided with a plurality of inner floating plate vent valves (810) positioned above the diffusion pipes (720).

2. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 1, wherein: the upper end of the middle buffer tank (200) is connected with a dead gas oil separator (300) through an exhaust pipe (600), a tenth valve (610) is arranged on the exhaust pipe (600), and the tenth valve (610) can be connected with a nitrogen device through a pipeline.

3. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 1, wherein: the intermediate buffer tank (200) is arranged on one side of the wharf exchange station (100).

4. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 1, wherein: the diffusion holes (721) are arranged on the lower semicircular pipe wall of the diffusion pipe (720), and the included angle between the circumferential central line of the diffusion holes (721) and the horizontal plane passing through the axis of the diffusion pipe (720) is not more than 60 degrees.

5. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 1, wherein: the small end of the eccentric reducing pipe (710) is connected with a storage tank feeding pipe (730) through a flange (740).

6. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 1, wherein: the lower end of the diffusion pipe (720) is arranged at the bottom of the inner floating roof storage tank (510) through a support (900), the support (900) comprises a transverse limiting support (910) and a full limiting support (920), and the transverse limiting support (910) and the full limiting support (920) are sequentially arranged along the oil inlet direction of the diffusion pipe (720).

7. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 6, wherein: the transverse limiting bracket (910) comprises a first transverse plate (912) for supporting the bottom of the diffusion tube (720) and two first side plates (911) respectively arranged at two sides of the diffusion tube (720).

8. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 6, wherein: full spacing support (920) are including second diaphragm (922), two second curb plates (921) of locating diffusion tube (720) both sides and third diaphragm (923) that set up in diffusion tube (720) top of supporting diffusion tube (720) bottom.

9. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 1, wherein: the side end of the top of the inner floating roof storage tank (510) is provided with a tank wall vent hole (511).

10. The comprehensive safety exhaust system for petrochemical wharf and warehousing according to claim 1, wherein: a plurality of inner floating disc vent valves (810) are arranged on the inner floating disc (800), wherein one part of the inner floating disc vent valves (810) are symmetrically distributed along the axis of the diffusion pipe (720), and the other part of the inner floating disc vent valves (810) are relatively positioned on the outer side of the tail end of the diffusion pipe (720).

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