阅读说明：本技术 石化码头及仓储综合安全排气系统 (Petrochemical pier and storage comprehensive safety exhaust system ) 是由 刘丰 夏天宇 高忠生 陈启明 于 2019-08-26 设计创作，主要内容包括：本发明公开了一种石化码头及仓储综合安全排气系统,本石化码头及仓储综合安全排气系统中的码头交换站、中间缓冲罐、乏气分油器、码头主工艺管道和库区主工艺管道形成石化码头至油库工艺的管道排气子系统,而内浮顶储罐、扩散管组件及内浮盘形成内浮顶储罐的储罐排气子系统。其中,石化码头至油库工艺的管道排气子系统用于排出管道中的气体,内浮顶储罐的储罐排气子系统用于进一步排出管道排气子系统仍未处理彻底的剩余气体。通过以上两个子系统,从而彻底完成排气工序。(The invention discloses a kind of petrochemical pier and storage comprehensive safety exhaust systems, this petrochemical pier and harbour switching station, intermediate buffer tank, lack of gas separator, the main process pipe of the main process pipe of harbour and reservoir area in storage comprehensive safety exhaust system form the pipeline air exhaust water subsystem of petrochemical pier to oil house processes, and internal floating roof tank, dispersion pipe system and interior floating plate form the storage tank exhaust gas subsystem of internal floating roof tank.Wherein, for petrochemical pier to the pipeline air exhaust water subsystem of oil house processes for the gas in discharge line, the storage tank exhaust gas subsystem of internal floating roof tank is used for the still untreated thorough residual gas of further discharge line exhaust gas subsystem.By two above subsystem, to be properly completed deairing step.)

1. a kind of petrochemical pier and storage comprehensive safety exhaust system, it is characterised in that: including

Harbour switching station (100), harbour ball collecting chamber (110), the connection main work in reservoir area including connecting the main process pipe of harbour (400) Reservoir area service cylinder (120) and the connection main process pipe of harbour (400) of skill pipeline (500) and the main process pipe in reservoir area (500) Bypass pipe (130), be provided with the first, second and third valve (131,132,133), harbour ball collecting chamber (110) on bypass pipe (130) It is connected with return pipe (140) between reservoir area service cylinder (120), return pipe (140) is provided in harbour ball collecting chamber (110) side 6th valve (141), return pipe (140) are provided with the 7th valve (142), bypass pipe (130) in reservoir area service cylinder (120) side It is connect by connecting tube (134) with return pipe (140) and the junction of connecting tube (134) and return pipe (140) is located at the 6th valve Between door (141) and the 7th valve (142), the main process pipe of harbour (400) is in bypass pipe (130) and harbour ball collecting chamber (110) Between be provided with the 8th valve (111), the main process pipe in reservoir area (500) is between bypass pipe (130) and reservoir area service cylinder (120) It is provided with the 9th valve (121)；

Intermediate buffer tank (200), is connected with feed pipe (210) and discharge nozzle (220), and feed pipe (210) and discharge nozzle (220) are equal It is connected on bypass pipe (130), the junction of feed pipe (210) and bypass pipe (130) is located at the first and second valve (131,132) Between, the junction of discharge nozzle (220) and bypass pipe (130) is located between second and third valve (132,133), feed pipe (210) On at least provided with the 4th valve (211), at least provided with the 5th valve (221) on discharge nozzle (220)；

Internal floating roof tank (510) is connect with the main process pipe in reservoir area (500), and the main process pipe in reservoir area (500) is stored up close to inner floating roof Pipe cleaning valve (520) are provided at tank (510) side；

Dispersion pipe system (700), including eccentric reducer (710), positioned at the diffuser (720) of internal floating roof tank (510) bottom And storage tank feed pipe (730) on the tank skin of internal floating roof tank (510) bottom is set, the small head end of eccentric reducer (710) with Storage tank feed pipe (730) connection, the stub end of eccentric reducer (710) are connect with diffuser (720), diffuser (720) tube wall On offer several diffusion holes (721), diffuser (720) end top is hinged with erosion control baffle (750)；

Interior floating plate (800), setting is internal in internal floating roof tank (510), floats up and down with liquid level, has several positioned at diffuser (720) the interior floating plate breather valve (810) above.

2. a kind of petrochemical pier according to claim 1 and storage comprehensive safety exhaust system, it is characterised in that: in described Between surge tank (200) upper end be connected with lack of gas separator (300) by exhaust pipe (600), be provided on the exhaust pipe (600) Tenth valve (610), the tenth valve (610) can be connect by pipeline with nitrogen device.

3. a kind of petrochemical pier according to claim 1 and storage comprehensive safety exhaust system, it is characterised in that: in described Between surge tank (200) be arranged in harbour switching station (100) side.

4. a kind of petrochemical pier according to claim 1 and storage comprehensive safety exhaust system, it is characterised in that: the expansion Dissipate hole (721) be arranged on the lower half circle tube wall of diffuser (720), diffusion hole (721) circumferential centerline with pass through diffuser (720) angle between the horizontal plane in axle center is not more than 60 °.

5. a kind of petrochemical pier according to claim 1 and storage comprehensive safety exhaust system, it is characterised in that: described inclined The small head end of heart reduced pipe (710) is connect by flange (740) with storage tank feed pipe (730).

6. a kind of petrochemical pier according to claim 1 and storage comprehensive safety exhaust system, it is characterised in that: the expansion Separate tube (720) lower end is mounted on internal floating roof tank (510) bottom by bracket (900), and the bracket (900) includes cross spacing Bracket (910) and full limiting bracket (920), cross spacing bracket (910) and full limiting bracket (920) are along diffuser (720) Oil inlet direction is arranged successively.

7. a kind of petrochemical pier according to claim 6 and storage comprehensive safety exhaust system, it is characterised in that: the cross It include that first transverse slat (912) of support diffuser (720) bottom and two are divided into diffuser (720) to limiting bracket (910) The first side plate (911) of two sides.

8. a kind of petrochemical pier according to claim 6 and storage comprehensive safety exhaust system, it is characterised in that: described complete Limiting bracket (920) include support diffuser (720) bottom the second transverse slat (922), two be divided into diffuser (720) two sides The second side plate (921) and the third transverse slat (923) that is set at the top of diffuser (720).

9. a kind of petrochemical pier according to claim 1 and storage comprehensive safety exhaust system, it is characterised in that: in described Side is provided with tank skin venthole (511) at the top of floating roof tank (510).

10. a kind of petrochemical pier according to claim 1 and storage comprehensive safety exhaust system, it is characterised in that: described Several interior floating plate breather valves (810) are offered on interior floating plate (800), floating plate breather valve (810) is along diffuser in a portion (720) axisymmetrical is distributed, and floating plate breather valve (810) is located relatively on the outside of diffuser (720) end in another part.

Technical field

The present invention relates to oil product conveying technology fields, more particularly, to a kind of petrochemical pier and storage comprehensive safety exhaust system System.

Background technique

In petrochemical pier warehousing and storage activities, the oil product by ship at port berth is needed to be delivered in the storage tank of reservoir area.Usually Ground, process of the oil product through logical ball technique are as follows: the main process pipe → exchange of equipment (harbour pipe cleaning valve etc.) → harbour at port berth Stand → the main process pipe in reservoir area → tank group at equipment (pump canopy pipe cleaning valve, internal floating roof tank etc.).The power source of logical ball technique is pressure Contracting gas.

For convenient for metering clearing, dock ship emptying usually carries out sweeping operation after the completion, and sweeping process can generate greatly Compressed gas is measured, if these gases are without processing, it is directly filled with the laggard storage area process duct of harbour process pipe with oil product for meeting Road easily causes gas to enter internal floating roof tank, damages interior floating plate, or even cause safety accident.At the same time, due to by pigging The gas leakage of device end face, hose purge operations and process equipment defect etc. influence, and a small amount of compressed gas can also enter downstream reservoir area Internal floating roof tank in, equally to being easily damaged the equipment such as internal floating roof tank.

Summary of the invention

In view of the above-mentioned problems, can be discharged the present invention provides a kind of petrochemical pier and storage comprehensive safety exhaust system Compressed gas prevents internal floating roof tank from damaging.

The present invention is that technical solution used by solving its technical problem is:

A kind of petrochemical pier and comprehensive safety exhaust system of storing in a warehouse, including harbour switching station, including the connection main technique of harbour The harbour ball collecting chamber of pipeline, the reservoir area service cylinder for connecting the main process pipe in reservoir area and the main process pipe of connection harbour and reservoir area master The bypass pipe of process pipe is provided with the first, second and third valve on bypass pipe, connects between harbour ball collecting chamber and reservoir area service cylinder There is a return pipe, return pipe is provided with the 6th valve in harbour ball collecting chamber side, and return pipe is provided with the in reservoir area service cylinder side Seven valves, bypass pipe is connect by connecting tube with return pipe and the junction of connecting tube and return pipe is located at the 6th valve and the 7th Between valve, the main process pipe of harbour is provided with the 8th valve, the main process pipe in reservoir area between bypass pipe and harbour ball collecting chamber The 9th valve is provided between bypass pipe and reservoir area service cylinder；Intermediate buffer tank is connected with feed pipe and discharge nozzle, feed pipe It is both connected on bypass pipe with discharge nozzle, the junction of feed pipe and bypass pipe is between the first and second valve, discharge nozzle and side The junction of siphunculus is located between second and third valve, at least provided with the 4th valve on feed pipe, at least sets on discharge nozzle It is equipped with the 5th valve；Internal floating roof tank is connect with the main process pipe in reservoir area, and the main process pipe in reservoir area is close to internal floating roof tank Pipe cleaning valve is provided at side；Dispersion pipe system, including eccentric reducer, the diffuser positioned at internal floating roof tank bottom and setting The small head end of storage tank feed pipe on the tank skin of internal floating roof tank bottom, eccentric reducer is connect with storage tank feed pipe, eccentric different The stub end of diameter pipe is connect with diffuser, is spread and is offered several diffusion holes on tube wall, diffuser end top is hinged with anti- Rush baffle；Interior floating plate is arranged inside internal floating roof tank, floats up and down with liquid level, with several interior above diffuser Floating plate breather valve.

A kind of described petrochemical pier and storage comprehensive safety exhaust system, the centre are slow according to a first aspect of the present invention It rushes tank upper end and lack of gas separator is connected with by exhaust pipe, the tenth valve is provided on the exhaust pipe, the tenth valve passes through pipe Road can be connect with nitrogen device.

A kind of described petrochemical pier and storage comprehensive safety exhaust system, the centre are slow according to a first aspect of the present invention Tank is rushed to be arranged in harbour switching station side.

A kind of petrochemical pier and comprehensive safety exhaust system of storing in a warehouse according to a first aspect of the present invention, the diffusion hole It is arranged on the lower half circle tube wall of diffuser, diffusion hole circumferential centerline and the angle across the horizontal plane in diffuser axle center No more than 60 °.

A kind of described petrochemical pier and storage comprehensive safety exhaust system, the bias are different according to a first aspect of the present invention The small head end of diameter pipe is connect by flange with storage tank feed pipe.

A kind of petrochemical pier and comprehensive safety exhaust system of storing in a warehouse according to a first aspect of the present invention, the diffuser Lower end is mounted on internal floating roof tank bottom by bracket, and the bracket includes cross spacing bracket and full limiting bracket, laterally limits Position bracket and full limiting bracket are arranged successively along the oil inlet direction of diffuser.

A kind of petrochemical pier and comprehensive safety exhaust system of storing in a warehouse according to a first aspect of the present invention, the laterally limit Position bracket includes the first transverse slat and two the first side plates for being divided into diffuser two sides of support diffusion bottom of the tube.

A kind of petrochemical pier and comprehensive safety exhaust system of storing in a warehouse according to a first aspect of the present invention, the full limit Bracket include support diffusion bottom of the tube the second transverse slat, two be divided into the second side plate of diffuser two sides and be set to diffuser The third transverse slat at top.

A kind of petrochemical pier and comprehensive safety exhaust system of storing in a warehouse according to a first aspect of the present invention, the inner floating roof Tank top side is provided with tank skin venthole.

A kind of petrochemical pier and comprehensive safety exhaust system of storing in a warehouse according to a first aspect of the present invention, the interior floating plate On offer several interior floating plate breather valves, in a portion floating plate breather valve along diffuser axisymmetrical be distributed, another part Interior floating plate breather valve is located relatively on the outside of diffusion pipe end.

The beneficial effects of the present invention are: this petrochemical pier and storage comprehensive safety exhaust system in harbour switching station, in Between surge tank, lack of gas separator, the main process pipe of the main process pipe of harbour and reservoir area form the pipe of petrochemical pier to oil house processes Road exhaust gas subsystem, and internal floating roof tank, dispersion pipe system and interior floating plate form the storage tank exhaust gas subsystem of internal floating roof tank.Its In, the pipeline air exhaust water subsystem of petrochemical pier to oil house processes is for the gas in discharge line, the storage tank row of internal floating roof tank Gas subsystem is used for the still untreated thorough residual gas of further discharge line exhaust gas subsystem.Pass through two above subsystem System, to be properly completed deairing step.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented Example, without creative efforts, other that can also be obtained according to these attached drawings are set those skilled in the art Meter scheme and attached drawing:

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is structural schematic diagram of the invention (reservoir area process pipe fills line process)；

Fig. 3 is structural schematic diagram of the invention (harbour process pipe fills line process)；

Fig. 4 is structural schematic diagram of the invention (unloading process)；

Fig. 5 is structural schematic diagram (sweeping process) of the invention；

Fig. 6 is structural schematic diagram of the invention (harbour process pipe leads to ball process)；

Fig. 7 is structural schematic diagram of the invention (material is sent into internal floating roof tank process in intermediate buffer tank)；

Fig. 8 is the structural schematic diagram of internal floating roof tank in present pre-ferred embodiments；

Fig. 9 is the structural schematic diagram of dispersion pipe system, bracket and erosion control baffle in present pre-ferred embodiments；

Figure 10 is the partial schematic diagram in Fig. 9 at A-A；

Figure 11 is the partial schematic diagram in Fig. 9 at B-B；

Figure 12 is the sectional view of diffuser in present pre-ferred embodiments；

Figure 13 is the top view of internal floating roof tank in present pre-ferred embodiments.

Specific embodiment

It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.

Existing oil product tank group leads to ball technique and generally includes equipment at port berth (harbour pipe cleaning valve etc.), the main technique of harbour Equipment (pump canopy pipe cleaning valve, internal floating roof tank etc.) at pipeline, switching station, the main process pipe in reservoir area and tank group.

This pipeline pigging mode generally comprise service cylinder, ball collecting chamber, pipe cleaner (being generally commonly called as " logical ball "), to gas line Deng hair, ball collecting chamber are separately positioned on the head and end of the main process pipe of the main process pipe of harbour or reservoir area, and pipe cleaner is utilized to gas The compressed gas of line moves along pipeline and pushes oil product from service cylinder, realizes logical ball technique, it is defeated along pipeline to complete oil product It send.

However, compressed gas can be with oil product together during ship sweeping operation and existing logical ball technological work Into pipeline, internal floating roof tank is eventually entered into, and then may cause interior floating plate and the accidents such as damage, topple.

For this purpose, the present embodiment provides a kind of petrochemical pier and storage comprehensive safety exhaust systems, and referring to Fig.1, this petrochemical industry code Head and storage comprehensive safety exhaust system include harbour switching station 100, intermediate buffer tank 200, lack of gas separator 300, harbour master Process pipe 400, the main process pipe 500 in reservoir area, internal floating roof tank 510, dispersion pipe system 700 and interior floating plate 800.Wherein, code Head switching station 100, intermediate buffer tank 200, lack of gas separator 300, the main process pipe 500 of the main process pipe 400 of harbour and reservoir area Form the pipeline air exhaust water subsystem of petrochemical pier to oil house processes, and internal floating roof tank 510, dispersion pipe system 700 and interior floating plate 800 form the storage tank exhaust gas subsystem of internal floating roof tank.

Wherein, petrochemical pier is to the pipeline air exhaust water subsystem of oil house processes for the gas in discharge line, inner floating roof storage The storage tank exhaust gas subsystem of tank is used for the still untreated thorough residual gas of further discharge line exhaust gas subsystem.By above Two subsystems, to be properly completed deairing step.

For pipeline air exhaust water subsystem and storage tank exhaust gas subsystem, now explain one by one:

Referring to Figure 1 to Figure 7, pipeline air exhaust water subsystem includes harbour switching station 100, intermediate buffer tank 200, lack of gas separator 300, the main process pipe 500 of the main process pipe 400 of harbour and reservoir area.

Wherein, referring to Fig.1, harbour switching station 100 includes the harbour ball collecting chamber 110 of the connection main process pipe 400 of harbour, connects It connects the reservoir area service cylinder 120 of the main process pipe 500 in reservoir area and connects the main process pipe 400 of harbour and the main process pipe in reservoir area 500 bypass pipe 130, the first valve 131, the second valve 132 and third valve 133 are provided on bypass pipe 130, and harbour receives ball Return pipe 140 is connected between cylinder 110 and reservoir area service cylinder 120, and return pipe 140 is provided with the in 110 side of harbour ball collecting chamber Six valves 141, return pipe 140 are provided with the 7th valve 142 in reservoir area service 120 side of cylinder, and bypass pipe 130 passes through connecting tube 134 connect and the junction of connecting tube 134 and return pipe 140 is located at the 6th valve 141 and the 7th valve 142 with return pipe 140 Between, the main process pipe 400 of harbour is provided with the 8th valve 111, reservoir area master between bypass pipe 130 and harbour ball collecting chamber 110 Process pipe 500 is provided with the 9th valve 121 between bypass pipe 130 and reservoir area service cylinder 120.

Intermediate buffer tank 200 is connected with feed pipe 210 and discharge nozzle 220, and feed pipe 210 and discharge nozzle 220 are both connected to On bypass pipe 130, the junction of feed pipe 210 and bypass pipe 130 is between the first valve 131 and the second valve 132, discharging The junction of pipe 220 and bypass pipe 130 is at least arranged on feed pipe 210 between the second valve 132 and third valve 133 There is the 4th valve 211, at least provided with the 5th valve 221 on discharge nozzle 220；Lack of gas separator 300 and centre are slow Rush the connection of tank 200.

Therefore, petrochemical pier to oil house processes pipeline air exhaust water system passes through intermediate buffer tank 200 and lack of gas separator 300, It realizes the compressed gas discharge in process pipe, internal floating roof tank 510 is entered when preventing compressed gas with unloading, and then effectively anti- Only interior floating plate such as damages, topples at the generation of accidents.

Further, the intermediate buffer tank 200 is Horizontal buffer tank.The use of intermediate buffer tank 200 is horizontal, can increase gas The efficiency of liquid separation, further speeds up the discharge of compressed gas.

Further, the intermediate buffer tank 200 is arranged in 100 side of harbour switching station.The land occupation of intermediate buffer tank 200 Area is smaller, can flexible setting in 100 side of harbour switching station, be avoided that pipeline adds the facilities such as scavenger pipe, solve practical empty Between.

Further, the lack of gas separator 300 is connect by exhaust pipe 600 with 200 upper end of intermediate buffer tank.Lack of gas point Oily device 300 is connect with 200 upper end of intermediate buffer tank, improves exhaust efficiency, and technical process is promoted more to go on smoothly.

Further, the tenth valve 610 is provided on the exhaust pipe 600, the tenth valve 610 can be with nitrogen by pipeline Device connection.It is connect, is inflated to intermediate buffer tank 200, in order to intermediate buffer tank with nitrogen device using the tenth valve 610 Material discharge in 200.

Further, the main process pipe 400 of the harbour can be connect with ship 410 to be unloaded, the main process pipe in reservoir area 500 connect with internal floating roof tank 510.Harbour to reservoir area process pipelines utilize pipeline air exhaust water system, realize the pressure in process pipe The discharge of contracting gas enters internal floating roof tank 510 when preventing compressed gas with unloading, and then effectively prevent interior floating plate damage, topples Etc. accidents generation.

The above pipeline air exhaust water subsystem includes but is not limited to following several technology modes: 1, reservoir area process pipe fills line stream Journey；2, harbour process pipe fills line process: 3, process of unloading；4, sweeping process；5, harbour process pipe leads to ball process；6, intermediate Material is sent into internal floating roof tank process in surge tank.Now explain one by one:

1, reservoir area process pipe fills line process, referring to Fig. 2 (overstriking pipeline is flow direction of material in Fig. 2):

The second valve 132, third valve 133, the 4th valve 211 are opened, one side's turn on pump of reservoir area, material is through the main technique in reservoir area Pipeline 500 is conveyed to intermediate buffer tank 200.Finally, material, and the gas in filling process are full of in the main process pipe 500 in reservoir area Body is discharged through intermediate buffer tank 200.

2, harbour process pipe fills line process, referring to Fig. 3 (overstriking pipeline is flow direction of material in Fig. 3)；

The first valve 131, the 4th valve 211 are opened, one side's turn on pump of ship, material is through the main process pipe 400 of harbour in Between surge tank 200 convey.Finally, material is full of in the main process pipe 400 of harbour, and the gas in filling process is through intermediate buffering Tank 200 is discharged.

3, unloading process, referring to Fig. 4 (overstriking pipeline is flow direction of material in Fig. 4)；

The first valve 131, the second valve 132 and third valve 133 are opened, one side's turn on pump of ship, material is through the main work of harbour Skill pipeline 400, bypass pipe 130, the main process pipe 500 in reservoir area complete unloading finally to internal floating roof tank 510.

4, sweeping process, referring to Fig. 5 (overstriking pipeline is flow direction of material in Fig. 5)；

Open the first valve 131, the 4th valve 211, the 5th valve 221, third valve 133, one side's turn on pump of ship, material Through the main process pipe 400 of harbour, intermediate buffer tank 200, the main process pipe 500 in reservoir area, finally to internal floating roof tank 510, complete Sweeping；During sweeping, the gas of 400 1 sections of the main process pipe of harbour is discharged through intermediate buffer tank 200.

5, harbour process pipe leads to ball process, referring to Fig. 6 (overstriking pipeline is flow direction of material in Fig. 6)；

The 4th valve 211, the 6th valve 141, the 8th valve 111 are opened, one side's turn on pump of ship, material is through the main technique of harbour Finally to intermediate buffer tank 200, and gas is discharged in pipeline 400, harbour ball collecting chamber 110, return pipe 140, while pipe cleaner is taken in In harbour ball collecting chamber 110.

6, material is sent into internal floating roof tank process in intermediate buffer tank, and referring to Fig. 7, (overstriking pipeline is material stream in Fig. 7 To)；

Process when material is normal in 6.1 intermediate buffer tanks: third valve 133, the 5th valve 221, the tenth valve are opened 610, and connect by pipeline with nitrogen device at the tenth valve 610, by nitrogen device to gas, so that intermediate buffer tank Material is discharged through the main process pipe 500 in reservoir area in 200, finally to internal floating roof tank 510.

Process when material is less in 6.2 intermediate buffer tanks: when material is normal according to 6.1 intermediate buffer tanks in addition to process, To avoid gas from scurrying into the main process pipe in reservoir area, stopping can be taken to temporarily connecing diaphragm pump tank switching etc. after air to close valve closing door or pressure release Measure.

It should be noted that above six kinds of technology modes sequentially should be carried out successively, gas is avoided to scurry into reservoir area process pipe.

After above-mentioned pipeline air exhaust water subsystem process, still there is portion gas not to be discharged, residual gas need to be through storage tank Exhaust gas subsystem is further processed.

Referring to Fig. 8 to Figure 13, storage tank exhaust gas subsystem includes internal floating roof tank 510, dispersion pipe system 700 and interior floating plate 800.Storage tank exhaust gas subsystem tentatively reduces oil product and gas flow rate, then passes through expansion by eccentric reducer 710, diffuser 720 The further reduction of speed pressure release of several diffusion holes 221 in separate tube 720, guidance oil gas flow direction, stabilizing gas discharge, then expanded by surrounding Quickly the gas in discharge oil product is to interior 800 upper gaseous phase space of floating plate for the interior floating plate breather valve 810 that separate tube 720 is arranged, finally Gas is discharged outside the tank by tank skin venthole 511, thus flow velocity when oil inlet is effectively reduced, while realizing safety exhaust, it prevents Interior floating plate 800 damages.

Referring to Figure 1 to Figure 7, internal floating roof tank 510 are connect with the main process pipe 500 in reservoir area, the main process pipe 500 in reservoir area Pipe cleaning valve 520 is provided at 510 side of internal floating roof tank.Pipe cleaning valve 520 has the function of valve simultaneously and receives ball.It is preferred that , pipe cleaning valve 520 uses isolated form pipe clearing ball valve,

Wherein, the receipts ball function of pipe cleaning valve 520 matches with reservoir area service cylinder 120, when harbour switching station 100 to reservoir area master Process pipe 500 is longer and when pigging being needed to measure, can with the use of the oil product in the discharge main process pipe 500 in reservoir area into tank, Complete the main 500 leading portion pigging of process pipe in reservoir area.

When pipe cleaner reaches pipe cleaning valve 520, pipe cleaning valve 520 forms sealing, pipe cleaner backend gas is isolated, to realize Valve cutting and isolation features.

Further, referring to Fig. 8, Fig. 9 and Figure 13, dispersion pipe system 700 include eccentric reducer 710, diffuser 720 and Feed pipe 730.

Wherein, referring to Fig. 8, diffuser 720 is located at 510 bottom of internal floating roof tank.In the present embodiment, 720 end of diffuser Positioned at 510 bottom of internal floating roof tank close to the position at inner pot center.

Meanwhile referring to Fig. 8, feed pipe 730 is mounted on 510 bottom tank skin of internal floating roof tank.Specifically, feed pipe 730 One end is external outside internal floating roof tank 510, and in order to connect with oil pipe, and 730 other end of feed pipe is located at internal floating roof tank In 510.

In general, eccentric reducer 710 includes large and small head both ends, to be adapted to the pipeline of different tube diameters.The present embodiment In, referring to Fig. 8 and Fig. 9, the small head end of eccentric reducer 710 is connect with feed pipe 730, the stub end of eccentric reducer 710 and Diffuser 720 connects.It is apparent from according to principles of fluid mechanics, since caliber increases, is spread when oil product is flowed into from inlet tube 730 When pipe 720, oil product flows decrease.

Referring to Fig. 8 and Fig. 9, several diffusion holes 221 are offered on 720 tube wall of diffuser, oil product passes through several diffusion holes 221 It flows into internal floating roof tank 510, diffusion hole 221 effectively increases the overall circulation area of diffuser 720, in diffuser 720 Oil product flow velocity further decreases.

Referring to Fig. 8, Fig. 9 and Figure 13, interior floating plate 800 is arranged inside internal floating roof tank 510, floats up and down with liquid level, interior Floating plate 800 has several interior floating plate breather valves 810 positioned at 720 top of diffuser.When oil product is discharged through diffusion hole 221, companion As a large amount of gas is also discharged therewith.Interior floating plate breather valve 810 can supplied gas be expelled to from interior 800 lower section liquid level of floating plate rapidly Top gas-phase space reduces the impact of the internal floating plate 800 of gas.

Referring to Fig. 9 and Figure 12, the diffusion hole 221 is arranged on the lower half circle tube wall of diffuser 720, extends oil product and gas The motion path of body increases time of liberation of the gas in internal floating roof tank 100 in oil product, while preventing gas to diffuser 720 Interior floating plate is directly impacted in top flowing.Also, diffusion hole 221 and the angle across the horizontal plane 400 in 720 axle center of diffuser No more than 60 °, diffusion hole 221 and 100 bottom plate hypotelorism of internal floating roof tank are prevented, oil product and air scour bottom plate are caused.

Referring to Fig. 8 and Fig. 9, the small head end of the eccentric reducer 710 is connect by flange 740 with feed pipe 730.Flange 740 connections can ensure that eccentric reducer 710 and feed pipe 730 are bonded, while be fixedly connected with mode compared to welding etc., can Reduce pipe stress, it may have certain flexibility can bear diffuser 720 because oil product is certain into generating due to tank bottom sedimentation The deformation of degree, while maintenance easy to disassemble.

Referring to Fig. 8 and Fig. 9,720 lower end of diffuser is mounted on 510 bottom of internal floating roof tank by bracket 900.It is described 510 bottom of internal floating roof tank is bottom plate 512.Wherein, the bracket 900 includes cross spacing bracket 910 and full limiting bracket 920, cross spacing bracket 910 and full limiting bracket 920 are arranged successively along the oil inlet direction of diffuser 720.Cross spacing bracket 910 quantity is not unique, can be one, can also be multiple.In the present embodiment, cross spacing bracket 910 includes two, Two cross spacing brackets 910 and full limiting bracket 920 are arranged successively along the oil inlet direction of diffuser 720.

Cross spacing bracket 910 is used to limit the lateral position of diffuser 720, it should be noted that transverse direction herein is The horizontal radial of diffuser 720.Referring to Fig. 9, the cross spacing bracket 910 includes the first cross of support 720 bottom of diffuser Plate 912 and two are divided into the first side plate 911 of 720 two sides of diffuser.In the present embodiment, the setting of 510 bottom of internal floating roof tank Have the first mounting plate 913, two the first side plates 911 are welded on the first mounting plate 913, and 912 both ends of the first transverse slat respectively with Two the first side plate 911 welding.First mounting plate 913 is mounted on bottom plate 512.

Full limiting bracket 920 is used to limit diffuser 720 along its own any radial displacement, i.e., not only includes level Radial, vertical radial direction etc., but it has been entirely limited any radial displacement of diffuser 720.Referring to Fig.1 0, full limiting bracket 920 The second transverse slat 922, two including supporting 720 bottom of diffuser is divided into the second side plate 921 and the setting of 720 two sides of diffuser Third transverse slat 923 in 720 top of diffuser.In the present embodiment, 510 bottom of internal floating roof tank is provided with the second mounting plate 924, Two the second side plates 921 are welded on the second mounting plate 924, and 922 both ends of the second transverse slat are respectively welded at two the second side plates 921 On, 923 both ends of third transverse slat pass through bolt respectively and are fixedly connected with two the second side plates 921.Second mounting plate 924 is mounted on bottom On plate 512.

It should be noted that cross spacing bracket 910 and full limiting bracket 920 are the positions for limiting diffuser 720 , prevent diffuser 720 from excessive offset occurs when being impacted by oil product and gas.Therefore, cross spacing bracket 910 and complete The structure of limiting bracket 920 is not limited to the mode of the present embodiment, and embodiment is there are a variety of, as long as being able to achieve corresponding function Limiting bracket can be used.

Referring to Fig. 8, the 510 top side of internal floating roof tank is provided with tank skin venthole 511.Tank skin venthole 511 is used Gas inside discharge internal floating roof tank 510, it is preferred that 510 top of internal floating roof tank is circumferential to be evenly equipped with several tank skin ventilations Hole 511.In the present embodiment, 511 end of tank skin venthole is bent downwardly.

Referring to Fig. 8 and Fig. 9, the bottom of the bottom of the eccentric reducer 710, the bottom of feed pipe 730 and diffuser 720 It is all in the same horizontal plane, increases the distance between 720 bottom of diffuser and 100 bottom plate of internal floating roof tank, prevent oil product and gas Body washes away bottom plate.

Referring to Fig.1 3, several interior floating plate breather valves 810 are offered on the interior floating plate 800, and floating plate is logical in a portion Air valve 810 is distributed along 720 axisymmetrical of diffuser, and floating plate breather valve 810 is located relatively at outside 720 end of diffuser in another part Side.

Several interior floating plate breather valves 810 are largely divided into two parts, and the interior floating plate breather valve 810 of a part is along diffuser The distribution of 720 axisymmetricals.3 it is found that the interior floating plate breather valve 810 of this part includes eight, this eight in the present embodiment referring to Fig.1 A interior floating plate breather valve 810 is distributed along 720 axisymmetrical of diffuser, and is corresponded.But the not interior floating plate of this part Breather valve 810 is only eight, can also be to be multiple, with specific reference to diffusion tube lengths reasonable Arrangement.

The interior floating plate breather valve 810 of another part is located relatively on the outside of 720 end of diffuser.3 it is found that this reality referring to Fig.1 It applies in example, the interior floating plate breather valve 810 of this part includes three.But not the interior floating plate breather valve 810 of this part is only three, It can also be multiple.

Interior floating plate breather valve 810 is in close state under normal circumstances, when interior floating plate 800 builds up below enough gas, The valve deck of interior floating plate breather valve 810 is opened by underlying gas pressure, so that gas can directly rapidly after being discharged by diffusion hole 221 It is expelled to upper gaseous phase space from interior floating plate 800, the impact of the internal floating plate 800 of gas is reduced, prevents gas from hitting and cause interior floating plate 800 Damage.

Referring to Fig. 8, Fig. 9 and Figure 13,720 end top of diffuser is hinged with erosion control baffle 750,750 diameter of erosion control baffle Greater than 720 diameter of diffuser, prevents oil product from causing large impact from 720 end high speed ejection of diffuser and forming eddy flow, avoid Floating plate 800 in damage is hit in the agitation of oil product fierceness and generation water attack, gas in internal floating roof tank 510.

Described above-described embodiment is to be further described to above content of the invention, but this should not be interpreted as this hair The range of bright above-mentioned theme is only limitted to above-described embodiment, all that model of the invention is belonged to based on the technology that above content is realized It encloses.