CN118239443A - Oil recovery device and oil recovery method - Google Patents

Abstract

The application discloses an oil recovery device and an oil recovery method, and belongs to the technical field of petrochemical industry. The first end of the first connector is used for being connected with an oil product transport vehicle, the second end of the first connector is connected with the first end of the first pipeline, and the third end of the first connector is connected with the first valve; the second end of the first pipeline is connected with the first end of the second connecting component, and the second end of the second connecting component is used for being connected with the oil tank; the liquid inlet and the air inlet are respectively arranged at the top and the bottom of the shell of the tank body, the liquid storage chamber is arranged in the shell of the tank body, and the air bag is arranged in the liquid storage chamber; the liquid inlet is connected with the third end of the second connecting component, the air inlet is connected with the first end of the second connector, the second end of the second connector is connected with the second pipeline, and the third end of the second connector is connected with the third pipeline. The device can realize the airtight recovery of residual oil, can not appear throwing the phenomenon to recovery effect has been improved.

Description

Oil recovery device and oil recovery method

Technical Field

The application relates to the technical field of petrochemical industry, in particular to an oil recovery device and an oil recovery method.

Background

Condensate is a mixture of hydrocarbons that accompanies the condensation of natural gas during the development of an oil and gas field. The extracted condensate is typically stored in a condensate tank, which is connected to a condensate carrier via a pipeline when the condensate is to be used, and the condensate is then transferred to the condensate carrier. And when the transfer quantity reaches a preset threshold value, removing the pipeline, and transporting the condensate oil to a destination through a condensate oil transport vehicle.

Because condensate inevitably remains in the pipeline, when the transfer is finished, the condensate remaining in the pipeline needs to be recovered first, and the residual condensate is poured into a condensate carrier vehicle, so that resources are saved. In the related art, the pipeline is connected with the condensate oil transport vehicle and the condensate oil tank, and is also connected with the oil drum, after the transfer is finished, the residual condensate oil in the pipeline is collected through the oil drum, and then the condensate oil collected in the oil drum is poured into the condensate oil transport vehicle by an operator.

However, in the process of manually pouring condensate in the oil drum into the condensate carrier vehicle, a throwing phenomenon may occur, resulting in poor recovery effect.

Disclosure of Invention

The embodiment of the application provides an oil recovery device and an oil recovery method, which can improve the oil recovery effect. The specific technical scheme is as follows:

In one aspect, an embodiment of the present application provides an oil recovery apparatus, including: the device comprises a first connecting component, a second connecting component, a third connecting component and an air pressure recovery tank;

the first connection assembly includes: a first joint, a first line and a first valve;

the first end of the first connector is used for being connected with an oil product transport vehicle, the second end of the first connector is connected with the first end of the first pipeline, and the third end of the first connector is connected with the first valve;

The second end of the first pipeline is connected with the first end of the second connecting component, and the second end of the second connecting component is used for being connected with an oil tank;

the air pressure recovery tank includes: the liquid inlet, the air inlet, the tank shell, the liquid storage chamber and the air bag; the third connection assembly includes: a second joint, a second pipeline, a third pipeline, a second valve and a third valve;

The liquid inlet is formed in the top of the tank shell, the air inlet is formed in the bottom of the tank shell, the liquid storage chamber is formed in the tank shell, and the air bag is formed in the liquid storage chamber;

The liquid inlet is connected with the third end of the second connecting component, the air inlet is connected with the first end of the second connector, the second end of the second connector is connected with the second pipeline, and the third end of the second connector is connected with the third pipeline; the second valve is arranged on the second pipeline, and the third valve is arranged on the third pipeline;

The liquid storage chamber is used for storing residual oil products;

Wherein, in the process of collecting the oil product remained in the first pipeline, the third valve is in an open state and is used for exhausting the air in the air bag; the first valve is in an open state and is used for pressing the residual oil into the liquid storage chamber under the action of external air;

In the process of transferring the residual oil product into the oil product transport vehicle, the second valve is in an opening state and is used for introducing air into the air bag through the air inlet, and in the process of expanding the air bag, the residual oil product is pressed into the oil product transport vehicle.

In one possible implementation, the apparatus further includes: a controller;

the first valve, the second valve and the third valve are all electrically connected with the controller;

the controller is used for controlling the opening and closing states of the first valve, the second valve and the third valve.

In another possible implementation manner, the second connection component includes: a third joint, a fourth pipeline and a fourth valve;

the first end of the third joint is connected with the second end of the first pipeline, the second end of the third joint is connected with the first end of the fourth pipeline, and the third end of the third joint is connected with the liquid inlet;

the second end of the fourth pipeline is used for being connected with the oil tank, and the fourth valve is arranged on the fourth pipeline;

And in the process of transferring the oil in the oil tank to the oil transport vehicle, the fourth valve is in an open state.

In another possible implementation, the apparatus further includes: a fifth line and a fifth valve;

The first end of the fifth pipeline is connected with the third end of the second connecting component, and the second end of the fifth pipeline is connected with the liquid inlet; the fifth valve is arranged on the fifth pipeline;

The fifth valve is in an open state during the process of collecting the residual oil in the first pipeline and during the process of transferring the residual oil to the oil transporter.

In another possible implementation, the apparatus further includes: a lifting table;

the air pressure recovery tank is fixed on the lifting table;

lowering the height of the lifting table while collecting the oil remaining in the first pipeline; and when the residual oil product is transferred into the oil product transport vehicle, the height of the lifting table is raised.

In another possible implementation, the pneumatic recovery tank further includes: the fixing flange and the heat preservation layer;

the fixing flange is used for fixing the air bag at the bottom of the liquid storage chamber;

the heat preservation wraps the outer wall of the tank shell and is used for preserving heat of residual oil in the liquid storage chamber.

In another possible implementation, the pneumatic recovery tank further includes: a plurality of brackets;

the supports are fixedly connected with the tank shell and used for supporting the tank shell.

In another possible implementation manner, the first connection component further includes: a fourth joint;

The first end of the fourth joint is connected with the first end of the first joint, the second end of the fourth joint is used for being connected with a sixth valve, and the sixth valve is arranged at the bottom of the oil product transport vehicle;

In the process of collecting the oil product remained in the first pipeline, the sixth valve is in a closed state; and in the process of transferring the oil in the oil tank to the oil transport vehicle, the sixth valve is in an open state.

In another aspect, an embodiment of the present application provides an oil recovery method, which is applied to the oil recovery device described in any one of the foregoing, and the method includes:

opening a second valve, and introducing air into the air bag through the second valve;

In the process of expanding the air bag, pressing the current residual oil in the liquid storage chamber into an oil transport vehicle through a first pipeline;

transferring the oil product in the oil tank to the oil product transport vehicle through the first pipeline and the second connecting component;

When the quantity of oil in the oil product transport vehicle reaches a preset threshold value, a third valve is opened, and air in the air bag is discharged through the third valve;

Opening a first valve, communicating external air through the first valve, and pressing the oil product currently remained in the first pipeline into the liquid storage chamber under the action of the air;

and closing the first valve and the third valve, and disconnecting the first joint from the oil product carrier.

In one possible implementation of the present invention,

Opening the second valve, and introducing air into the air bag through the second valve, wherein the opening comprises the following steps:

raising the height of the lifting platform from the current height to a first height;

Opening the second valve under the condition that the lifting platform is at the first height, and introducing the air into the air bag through the second valve;

the opening of the third valve, the air in the air bag is discharged through the third valve, comprises:

Lowering the lifting platform from the first height to a second height, the second height being lower than the current height;

And opening the third valve under the condition that the lifting platform is at the second height, and discharging the air in the air bag through the third valve.

The embodiment of the application provides an oil recovery device, which is characterized in that when residual oil in a first pipeline is collected, a third valve is opened, air in an air bag is discharged, a storage space is provided for the residual oil, the first valve is opened, the first pipeline is communicated with the outside air, and the residual oil in the first pipeline is pressed into a liquid storage chamber under the action of the outside air. When the residual oil is transferred into the oil transport vehicle, the second valve is opened, air is introduced into the air bag, and the residual oil in the liquid storage chamber is pressed into the oil transport vehicle in the expansion process of the air bag. Therefore, the device can realize the airtight recovery of residual oil products, and does not have a throwing phenomenon, thereby improving the recovery effect.

Drawings

FIG. 1 is a schematic diagram of an oil recovery device according to an embodiment of the present application;

FIG. 2 is a schematic illustration of a pneumatic recovery tank provided in an embodiment of the present application;

Fig. 3 is a flow chart of an oil recovery method according to an embodiment of the present application.

Reference numerals denote:

1-a first connecting component, 2-a second connecting component, 3-a third connecting component, 4-an air pressure recovery tank,

5-Oil product transport vehicle, 6-oil tank, 7-controller, 8-fifth pipeline, 9-fifth valve, 10-lifting table,

11-First connection, 12-first line, 13-first valve, 14-fourth connection, 15-sixth valve,

16-Seventh valve, 21-third joint, 22-fourth line, 23-fourth valve, 31-second joint,

32-Second line, 33-third line, 34-second valve, 35-third valve, 41-inlet,

42-Air inlet, 43-tank shell, 44-liquid storage chamber, 45-air bag, 46-fixed flange, 47-heat preservation layer and 48-bracket.

Detailed Description

In order to make the technical scheme and advantages of the present application more clear, the following further describes the embodiments of the present application in detail.

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising," "including," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic diagram of an oil recovery device according to an embodiment of the present application, referring to fig. 1, the device includes: a first connection assembly 1, a second connection assembly 2, a third connection assembly 3 and a pneumatic recovery tank 4;

The first connection assembly 1 includes: a first joint 11, a first line 12 and a first valve 13;

The first end of the first joint 11 is used for being connected with the oil product transport vehicle 5, the second end of the first joint 11 is connected with the first end of the first pipeline 12, and the third end of the first joint 11 is connected with the first valve 13;

The second end of the first pipeline 12 is connected with the first end of the second connecting assembly 2, and the second end of the second connecting assembly 2 is used for being connected with the oil tank 6;

The air pressure recovery tank 4 includes: a liquid inlet 41, an air inlet 42, a tank shell 43, a liquid storage chamber 44 and an air bag 45; the third connection assembly 3 includes: a second joint 31, a second line 32, a third line 33, a second valve 34 and a third valve 35;

The liquid inlet 41 is arranged at the top of the tank body shell 43, the air inlet 42 is arranged at the bottom of the tank body shell 43, the liquid storage chamber 44 is arranged in the tank body shell 43, and the air bag 45 is arranged in the liquid storage chamber 44;

The liquid inlet 41 is connected with the third end of the second connecting component 2, the air inlet 42 is connected with the first end of the second joint 31, the second end of the second joint 31 is connected with the second pipeline 32, and the third end of the second joint 31 is connected with the third pipeline 33; a second valve 34 is provided on the second line 32 and a third valve 35 is provided on the third line 33;

A reservoir 44 for storing residual oil;

Wherein, during the process of collecting the oil remaining in the first pipeline 12, the third valve 35 is in an opened state for exhausting the air in the air bag 45; the first valve 13 is in an open state and is used for pressing residual oil into the liquid storage chamber 44 under the action of external air;

In the process of transferring the residual oil into the oil carrier 5, the second valve 34 is in an open state for introducing air into the air bag 45 through the air inlet 42, and in the process of expanding the air bag 45, the residual oil is pressed into the oil carrier 5.

The embodiment of the application provides an oil recovery device, which is characterized in that when the residual oil in a first pipeline 12 is collected, a third valve 35 is opened, air in an air bag 45 is discharged to provide a storage space for the residual oil, and a first valve 13 is opened to enable the first pipeline 12 to be communicated with the outside air, so that the residual oil in the first pipeline 12 is pressed into a liquid storage chamber 44 under the action of the outside air. When transferring the residual oil into the oil carrier 5, the second valve 34 is opened, air is introduced into the air bag 45, and the residual oil in the liquid storage chamber 44 is pressed into the oil carrier 5 in the expansion process of the air bag 45. Therefore, the device can realize the airtight recovery of residual oil products, and does not have a throwing phenomenon, thereby improving the recovery effect. In addition, the device is safe and convenient to operate, low in investment cost, capable of saving oil resources and reducing environmental pollution.

The oil in the oil tank 6 may be condensate oil or other kinds of oil, and is not particularly limited.

Introduction of the first connection assembly 1: in one possible implementation, the first connection assembly 1 further comprises: a fourth joint 14;

the first end of the fourth joint 14 is connected with the first end of the first joint 11, the second end of the fourth joint 14 is used for being connected with a sixth valve 15, and the sixth valve 15 is arranged at the bottom of the oil product transport vehicle 5;

During the collection of the oil remaining in the first line 12, the sixth valve 15 is in a closed state; during transfer of oil in the oil tank 6 into the oil carrier 5, the sixth valve 15 is in an open state.

In this implementation manner, the fourth joint 14 is a quick joint, two ends of the fourth joint 14 are respectively connected with the sixth valve 15 and the first joint 11, and the sixth valve 15 is arranged at the bottom of the oil product carrier 5. When loading is completed, the fourth joint 14 is disconnected, thereby disconnecting the fourth joint 14 from the oil carrier 5. The first joint 11 is a three-way joint and is horizontally arranged, the left end and the right end of the first joint 11 are respectively connected with the oil product transport vehicle 5 and the first pipeline 12, and the upper end of the first joint 11 is connected with the first valve 13.

In one possible implementation manner, a seventh valve 16 is arranged at the end part of the first pipeline 12 connected with the first joint 11, when the seventh valve 16 is in an opened state, oil in the oil tank 6 or oil remained in the liquid storage chamber 44 can enter the oil transport vehicle 5 through the first pipeline 12, and oil remained in the first pipeline 12 can also enter the liquid storage chamber 44; when the seventh valve 16 is in the closed state, the oil in the oil tank 6 or the oil remaining in the liquid storage chamber 44 cannot enter the oil carrier 5, and the oil remaining in the first pipeline 12 cannot enter the liquid storage chamber 44.

It can be seen that the first pipeline 12, the seventh valve 16, the first joint 11, the fourth joint 14, the sixth valve 15 and the oil transportation vehicle 5 are connected in sequence. Based on this connection, the oil in the oil tank 6 or the oil remaining in the liquid storage chamber 44 flows through the first pipeline 12, the seventh valve 16, the first joint 11, the fourth joint 14, and the sixth valve 15 in order, and finally enters the oil carrier 5. Wherein the first line 12 is a hose.

Introduction of the second connection assembly 2: in one possible implementation, the second connection assembly 2 comprises: a third joint 21, a fourth line 22 and a fourth valve 23;

The first end of the third joint 21 is connected with the second end of the first pipeline 12, the second end of the third joint 21 is connected with the first end of the fourth pipeline 22, and the third end of the third joint 21 is connected with the liquid inlet 41;

the second end of the fourth pipeline 22 is used for being connected with the oil tank 6, and a fourth valve 23 is arranged on the fourth pipeline 22;

The fourth valve 23 is in an open state during transfer of oil in the oil tank 6 into the oil carrier 5.

In this implementation manner, the third joint 21 is a three-way joint and is horizontally arranged, the left and right ends of the third joint 21 are respectively connected with the first pipeline 12 and the fourth pipeline 22, and the lower end of the third joint 21 is connected with the liquid inlet 41.

From this, it is seen that the tank 6, the fourth valve 23, the fourth line 22, the third joint 21 and the first line 12 are connected in this order. Based on this connection, when transferring the oil in the oil tank 6 into the oil carrier 5, the fourth valve 23 is opened, and the oil in the oil tank 6 sequentially flows through the fourth valve 23, the fourth pipeline 22, the third joint 21 and the first pipeline 12, and enters the oil carrier 5, thereby transferring the oil into the oil carrier 5.

The fourth line 22 may be a hose or a hard pipe, and only the fourth line 22 is illustrated as a hard pipe.

Introduction of the third connection assembly 3: in one possible implementation, the third connection assembly 3 comprises: a second joint 31, a second line 32, a third line 33, a second valve 34 and a third valve 35.

The second joint 31 is a three-way joint and is vertically arranged, the upper end and the lower end of the second joint 31 are respectively connected with the air inlet 42 and the third pipeline 33, the right end of the second joint 31 is connected with the second pipeline 32 or the left end of the second joint 31 is connected with the second pipeline 32. In the embodiment of the present application, only the connection of the right end of the second joint 31 to the second pipe line 32 will be described as an example.

The second valve 34 is arranged on the second pipeline 32, when the residual oil in the liquid storage chamber 44 is transferred into the oil product carrier 5, the second valve 34 is opened, air is introduced into the air bag 45 through the second valve 34, and the air sequentially enters the air bag 45 through the second pipeline 32, the second connector 31 and the air inlet 42, so that the air bag 45 is expanded, and the residual oil in the liquid storage chamber 44 is pressed into the oil product carrier 5 in the expansion process of the air bag 45. Wherein the air is compressed air. Of course, other gas, for example, nitrogen gas, may be introduced into the airbag 45, and this is not particularly limited.

The third valve 35 is arranged on the third pipeline 33, when the residual oil in the first pipeline 12 is collected, the third valve 35 is opened, air in the air bag 45 is discharged through the third valve 35, a storage space is provided for the residual oil, the first valve 13 is also opened, the first valve 13 is communicated with the outside air, the residual oil in the first pipeline 12 and other pipelines is pressed into the liquid storage chamber 44 under the action of the outside air, and negative pressure generated in the first pipeline 12 and other pipelines can be prevented, so that the oil is not completely recovered.

The second line 32 and the third line 33 may be flexible pipes or hard pipes, and only the second line 32 and the third line 33 are described as hard pipes.

Introduction of fifth line 8 and fifth valve 9: in one possible implementation, the apparatus further includes: a fifth line 8 and a fifth valve 9;

the first end of the fifth pipeline 8 is connected with the third end of the second connecting component 2, and the second end of the fifth pipeline 8 is connected with the liquid inlet 41; a fifth valve 9 is arranged on the fifth line 8;

The fifth valve 9 is in an open state both during the collection of the residual oil in the first line 12 and during the transfer of the residual oil into the oil carrier 5.

In this implementation manner, two ends of the fifth pipeline 8 are respectively connected with the lower end of the third joint 21 and the liquid inlet 41, and the fifth valve 9 is arranged on the fifth pipeline 8. When transferring the residual oil in the liquid storage chamber 44 into the oil transportation vehicle 5 or collecting the residual oil in the first pipeline 12, the fifth valve 9 is opened, so that the residual oil in the liquid storage chamber 44 can enter the oil transportation vehicle 5 through the fifth valve 9, and the residual oil in the first pipeline 12 can also enter the liquid storage chamber 44 through the fifth valve 9.

When transferring the oil in the oil tank 6 into the oil carrier 5, the fourth valve 23 is opened and the fifth valve 9 is closed, so that the oil in the oil tank 6 is prevented from entering the liquid reservoir 44.

Introduction of the air pressure recovery tank 4: in one possible implementation, the pneumatic recovery tank 4 is a diaphragm pneumatic recovery tank. Referring to fig. 2, the air pressure recovery tank 4 further includes: a fixing flange 46 and a heat insulating layer 47;

A fixing flange 46 for fixing the air bag 45 to the bottom of the liquid storage chamber 44;

the heat preservation layer 47 wraps the outer wall of the tank body housing 43 and is used for preserving the heat of the residual oil in the liquid storage chamber 44.

In this implementation, the air bag 45 may be fixed to the middle position of the bottom of the liquid storage chamber 44 by the fixing flange 46, and the opening of the air bag 45 is communicated with the air inlet 42 at the bottom of the tank body casing 43, so that air may enter the air bag 45 through the air inlet 42, and the air bag 45 is inflated.

In this implementation, the insulation layer 47 is further disposed on the tank shell 43, and the insulation layer 47 is used for insulating the residual oil in the liquid storage chamber 44, so that the fluidity of the residual oil in the liquid storage chamber 44 can be reduced when the outside air temperature is low.

In one possible implementation, the pneumatic recovery tank 4 further comprises: a plurality of brackets 48;

a plurality of brackets 48 are fixedly connected with the tank body housing 43 for supporting the tank body housing 43.

In this embodiment, the support 48 can be welded to the tank housing 43, so that a fixed connection to the tank housing 43 is achieved.

The number of the brackets 48 may be set and changed according to the need, for example, the number of the brackets 48 is 3 or 4, and in the embodiment of the present application, only the number of the brackets 48 is 3 for example.

In a possible implementation, the liquid inlet 41 may be disposed at a middle position of the top of the tank body case 43, opposite to the air inlet 42, or may be disposed at another position of the top of the tank body case 43, which is not particularly limited. The size of the liquid inlet 41 may be set and changed as needed, and is not particularly limited.

In one possible implementation, the material of the tank shell 43 may be set and modified as required, for example, the material of the tank shell 43 is cast iron or an alloy, and the alloy may be stainless steel or other alloys, which is not limited in particular.

In one possible implementation, the material of the air bag 45 may be set and modified as desired, for example, the air bag 45 is oil-resistant and sulfur-resistant, so as to extend the service life of the air bag 45.

In the embodiment of the application, the air bag 45 is inflated by introducing air into the air bag 45, so that the air pressure energy is converted into mechanical energy, and the residual oil in the liquid storage chamber 44 is pressed into the oil transport vehicle 5, thereby fully utilizing the oil resource and avoiding waste. By venting the air in the bladder 45, the bladder 45 collapses, reducing the pressure in the reservoir 44 and providing a reservoir space for the oil remaining in the first line 12; meanwhile, the first pipeline 12 is communicated with the outside air, and under the action of gravity, residual oil in the first pipeline 12 flows into the liquid storage chamber 44, so that airtight recovery of the oil is realized, the oil is prevented from being thrown, resources are saved, and environmental pollution caused by the oil is avoided.

Introduction to the lift table 10: in one possible implementation, the apparatus further includes: a lifting table 10;

The air pressure recovery tank 4 is fixed on the lifting table 10;

lowering the height of the lift table 10 while collecting the oil remaining in the first pipeline 12; the height of the lift table 10 is raised while transferring the remaining oil into the oil carrier 5.

In this embodiment, the air pressure recovery tank 4 is fixed to the lifting table 10, and the fixing manner may be set and changed as needed, for example, the bracket 48 of the air pressure recovery tank 4 is welded to the lifting table 10, or the bracket 48 of the air pressure recovery tank 4 is fixedly connected to the lifting table 10 by nuts, which is not particularly limited.

In the embodiment of the present application, when the oil product remaining in the first pipeline 12 is collected, the height of the lifting platform 10 can be reduced, so that the pneumatic recovery tank 4 runs at a low level, which is beneficial to fully collecting the oil product remaining in the first pipeline 12. When transferring the residual oil product into the oil product transport vehicle 5, the height of the lifting table 10 can be raised, so that the air pressure recovery tank 4 can be operated at a high position, thus being beneficial to fully transferring the residual oil product in the liquid storage chamber 44 into the oil product transport vehicle 5 and achieving the purpose of thoroughly loading the residual liquid.

It should be noted that the fifth line 8 may be a hose or a hard tube. When the apparatus comprises a lifting platform 10, the fifth line 8 is a hose; when the device does not include a lifting table 10, the fifth line 8 is a hard pipe or a hose. The height of the elevating platform 10 may be manually or automatically adjusted, and is not particularly limited.

The valve according to the embodiment of the present application may be a manual control valve or an electric control valve, which is not particularly limited. The first valve 13, the second valve 34, and the third valve 35 will be described as examples.

In one possible implementation, the first valve 13, the second valve 34, and the third valve 35 are all manual control valves. In this implementation, when the residual oil in the first pipeline 12 is collected, the third valve 35 and the first valve 13 are manually opened, and the residual oil in the first pipeline 12 enters the liquid storage chamber 44 through the first pipeline 12 and the liquid inlet 41, and in this process, the second valve 34 is in a closed state. When transferring the residual oil into the oil carrier 5, the second valve 34 is opened manually, the residual oil in the liquid storage chamber 44 enters the oil carrier 5 through the liquid inlet 41, the second connecting component 2, the first pipeline 12 and the first joint 11, and the first valve 13 and the third valve 35 are both in a closed state in the process.

In another possible implementation, the first valve 13, the second valve 34, and the third valve 35 are electrically controlled valves, and each valve may correspond to one controller 7, or the valves share one controller 7, which is not limited in particular. If the valves share a controller 7, the device further comprises: a controller 7; the first valve 13, the second valve 34 and the third valve 35 are all electrically connected with the controller 7; and a controller 7 for controlling the open/closed states of the first valve 13, the second valve 34, and the third valve 35.

In this implementation, the controller 7 controls the opening of the third valve 35 and the first valve 13 when collecting the oil remaining in the first line 12. The controller 7 controls the opening of the second valve 34 when transferring the remaining oil into the oil carrier 5.

It should be noted that the type of the valve may be set and changed as needed, for example, the valve is a ball valve or other type of valve.

In summary, during the process of collecting the oil remaining in the first pipeline 12, the third valve 35, the first valve 13, the fifth valve 9 and the seventh valve 16 are all in the open state, and the other valves are all in the closed state. The air in the air bag 45 can be discharged through the third valve 35 to provide a storage space for residual oil; the first valve 13 is communicated with the external air, and the seventh valve 16 is communicated with the first pipeline 12, so that the external air can enter the first pipeline 12, negative pressure in the first pipeline 12 is prevented from being generated, and residual liquid is not completely recovered; through the fifth valve 9, it is communicated with the liquid inlet 41, so that the residual oil can enter the liquid storage chamber 44.

During transfer of the residual oil into the oil carrier 5, the second valve 34, the fifth valve 9, the sixth valve 15 and the seventh valve 16 are all in an open state, and the remaining valves are all in a closed state. Air is introduced into the air bag 45 through the second valve 34, power is provided for residual oil in the liquid storage chamber 44 in the expansion process of the air bag 45, and the residual oil enters the oil transport vehicle 5 through the fifth valve 9, the seventh valve 16 and the sixth valve 15, so that the residual liquid loading is realized.

In the process of transferring the oil in the oil tank 6 into the oil carrier 5, the fourth valve 23, the sixth valve 15 and the seventh valve 16 are all in an open state, and the rest valves are all in a closed state. The oil in the oil tank 6 enters the oil transport vehicle 5 through the fourth valve 23, the seventh valve 16 and the sixth valve 15, so that the oil loading is realized.

In the embodiment of the application, the residual oil product in the last loading process can be stored in the liquid storage chamber every time the oil product in the oil tank is transferred to the oil product transportation vehicle. In one possible implementation, the oil in the oil tank is transferred to the oil carrier vehicle first, then the oil remaining in the liquid storage chamber last time is loaded into the oil carrier vehicle, and finally the oil remaining in the current first pipeline is collected.

In another possible implementation manner, the oil product remaining in the liquid storage chamber last time is loaded into the oil product carrier vehicle, the oil product in the oil tank is transferred into the oil product carrier vehicle, and finally the oil product remaining in the current first pipeline is collected. Therefore, the amount of oil transferred to the oil product transport vehicle can be accurately controlled, and the oil product transport vehicle is prevented from overflowing under the condition of excessive oil products.

Only the latter implementation will be described below as an example. Fig. 3 is a flow chart of an oil recovery method according to an embodiment of the present application, referring to fig. 3, the method includes:

Step 301: and opening the second valve, and introducing air into the air bag through the second valve.

When transferring the current residual oil in the liquid storage chamber into the oil product transport vehicle, the fourth joint is connected with the sixth valve. If the oil recovery device does not comprise a lifting table, the second valve, the fifth valve, the sixth valve and the seventh valve are directly opened, air is introduced into the air bag through the second valve, and the current residual oil in the liquid storage chamber enters the oil transport vehicle through the fifth valve, the seventh valve and the sixth valve. If the oil recovery device comprises a lifting table, the height of the lifting table is firstly increased from the current height to the first height, and under the condition that the lifting table is at the first height, the second valve, the fifth valve, the sixth valve and the seventh valve are opened, air is introduced into the air bag through the second valve, and the current residual oil in the liquid storage chamber enters the oil transport vehicle through the fifth valve, the seventh valve and the sixth valve.

Step 302: in the process of expanding the air bag, the oil product which is currently remained in the liquid storage chamber is pressed into the oil product transport vehicle through the first pipeline.

Step 303: and the oil product in the oil tank is transferred to the oil product transport vehicle through the first pipeline and the second connecting component.

After the oil product which is currently remained in the liquid storage chamber is pressed into the oil product transport vehicle through the first pipeline, the second valve and the fifth valve are closed, the fourth valve is opened, and the oil product in the oil tank enters the oil product transport vehicle through the fourth valve, the fourth pipeline, the first pipeline, the seventh valve and the sixth valve.

Step 304: when the amount of oil in the oil product transport vehicle reaches a preset threshold value, the third valve is opened, and air in the air bag is discharged through the third valve.

The liquid level measuring instrument can be arranged in the oil product transport vehicle, so that related personnel can determine whether the quantity of oil products in the oil product transport vehicle reaches a preset threshold value according to the liquid level measuring instrument.

If the oil recovery device does not comprise a lifting table, when the amount of oil in the oil transport vehicle reaches a preset threshold value, the fourth valve is closed, the third valve is opened, and air in the air bag is discharged through the third valve. If the oil recovery device comprises a lifting platform, when the amount of oil in the oil transport vehicle reaches a preset threshold value, firstly reducing the lifting platform from a first height to a second height, wherein the second height is lower than the current height; and when the lifting platform is at the second height, opening the third valve, and discharging air in the air bag through the third valve.

Step 305: and opening the first valve, communicating external air through the first valve, and pressing the current residual oil product in the first pipeline into the liquid storage chamber under the action of the air.

And opening the first valve and the fifth valve, communicating external air through the first valve, and enabling the oil product remained in the first pipeline currently to enter the liquid storage chamber through the fifth valve under the action of air.

In the embodiment of the application, the first valve, the third valve and the fifth valve can be opened simultaneously, or the third valve can be opened first, and then the first valve and the fifth valve are opened, which is not limited in particular. Here, only the third valve is opened first, and then the first valve and the fifth valve are opened.

Step 306: and closing the first valve and the third valve, and disconnecting the first joint from the oil product carrier.

After the oil product remaining in the first pipeline currently enters the liquid storage chamber, the first valve, the third valve, the fifth valve, the sixth valve and the seventh valve are closed, the fourth joint is disassembled to disconnect the first joint from the oil product carrier, and then the next loading is repeated in steps 301-306.

The embodiment of the application provides an oil recovery method, which comprises the steps of firstly opening a second valve, introducing air into an air bag through the second valve, and pressing the current residual oil in a liquid storage chamber into an oil transport vehicle through a first pipeline in the expansion process of the air bag. Then in transferring the oil in the oil tank to the oil transport vechicle, when the quantity of oil in the oil transport vechicle reached the threshold value of predetermineeing, open the third valve, discharge the air in the gasbag through the third valve, and open first valve, communicate outside air through first valve, in the effect of air, with the present remaining oil in the first pipeline impress the liquid storage room in, close first valve and third valve at last, break off the connection between first joint and the oil transport vechicle. The method can realize the airtight recovery of the residual oil products without throwing phenomenon, thereby improving the recovery effect.

The foregoing description is only for the convenience of those skilled in the art to understand the technical solution of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. An oil recovery device, the device comprising: the device comprises a first connecting component (1), a second connecting component (2), a third connecting component (3) and an air pressure recovery tank (4);

the first connection assembly (1) comprises: a first joint (11), a first pipeline (12) and a first valve (13);

the first end of the first connector (11) is used for being connected with an oil product transport vehicle (5), the second end of the first connector (11) is connected with the first end of the first pipeline (12), and the third end of the first connector (11) is connected with the first valve (13);

the second end of the first pipeline (12) is connected with the first end of the second connecting component (2), and the second end of the second connecting component (2) is used for being connected with an oil tank (6);

The pneumatic recovery tank (4) comprises: a liquid inlet (41), an air inlet (42), a tank body shell (43), a liquid storage chamber (44) and an air bag (45); the third connection assembly (3) comprises: a second joint (31), a second pipeline (32), a third pipeline (33), a second valve (34) and a third valve (35);

The liquid inlet (41) is arranged at the top of the tank shell (43), the air inlet (42) is arranged at the bottom of the tank shell (43), the liquid storage chamber (44) is arranged in the tank shell (43), and the air bag (45) is arranged in the liquid storage chamber (44);

the liquid inlet (41) is connected with the third end of the second connecting component (2), the air inlet (42) is connected with the first end of the second connector (31), the second end of the second connector (31) is connected with the second pipeline (32), and the third end of the second connector (31) is connected with the third pipeline (33); -said second valve (34) is arranged on said second line (32), and-said third valve (35) is arranged on said third line (33);

-said reservoir (44) for storing residual oil;

Wherein the third valve (35) is in an open state for exhausting air in the air bag (45) during collection of oil remaining in the first pipeline (12); the first valve (13) is in an open state and is used for pressing the residual oil into the liquid storage chamber (44) under the action of external air;

In the process of transferring the residual oil into the oil carrier vehicle (5), the second valve (34) is in an open state and is used for introducing air into the air bag (45) through the air inlet (42), and in the process of expanding the air bag (45), the residual oil is pressed into the oil carrier vehicle (5).

2. The apparatus of claim 1, wherein the apparatus further comprises: a controller (7);

The first valve (13), the second valve (34) and the third valve (35) are all electrically connected with the controller (7);

the controller (7) is used for controlling the opening and closing states of the first valve (13), the second valve (34) and the third valve (35).

3. The device according to claim 1, characterized in that the second connection assembly (2) comprises: a third joint (21), a fourth pipeline (22) and a fourth valve (23);

The first end of the third joint (21) is connected with the second end of the first pipeline (12), the second end of the third joint (21) is connected with the first end of the fourth pipeline (22), and the third end of the third joint (21) is connected with the liquid inlet (41);

the second end of the fourth pipeline (22) is used for being connected with the oil tank (6), and the fourth valve (23) is arranged on the fourth pipeline (22);

In the process of transferring the oil in the oil tank (6) into the oil transport vehicle (5), the fourth valve (23) is in an open state.

4. The apparatus of claim 1, wherein the apparatus further comprises: a fifth line (8) and a fifth valve (9);

the first end of the fifth pipeline (8) is connected with the third end of the second connecting component (2), and the second end of the fifth pipeline (8) is connected with the liquid inlet (41); the fifth pipeline (8) is provided with the fifth valve (9);

The fifth valve (9) is in an open state both during the collection of the residual oil in the first line (12) and during the transfer of the residual oil into the oil carrier (5).

5. The apparatus of claim 1, wherein the apparatus further comprises: a lifting table (10);

the air pressure recovery tank (4) is fixed on the lifting table (10);

lowering the height of the lifting table (10) while collecting oil remaining in the first pipeline (12); and when the residual oil is transferred into the oil product transport vehicle (5), the height of the lifting table (10) is raised.

6. The apparatus according to claim 1, wherein the pneumatic recovery tank (4) further comprises: a fixing flange (46) and an insulating layer (47);

the fixing flange (46) is used for fixing the air bag (45) at the bottom of the liquid storage chamber (44);

The heat preservation layer (47) wraps the outer wall of the tank shell (43) and is used for preserving heat of oil products remained in the liquid storage chamber (44).

7. The apparatus according to claim 1, wherein the pneumatic recovery tank (4) further comprises: a plurality of brackets (48);

The plurality of brackets (48) are fixedly connected with the tank body shell (43) and are used for supporting the tank body shell (43).

8. The device according to claim 1, wherein the first connection assembly (1) further comprises: a fourth joint (14);

the first end of the fourth joint (14) is connected with the first end of the first joint (11), the second end of the fourth joint (14) is used for being connected with a sixth valve (15), and the sixth valve (15) is arranged at the bottom of the oil product transport vehicle (5);

-said sixth valve (15) is in a closed condition during the collection of the oil remaining in said first line (12); in the process of transferring the oil in the oil tank (6) into the oil transport vehicle (5), the sixth valve (15) is in an open state.

9. An oil recovery method, characterized by being applied to the oil recovery apparatus according to any one of claims 1 to 8, comprising:

opening a second valve, and introducing air into the air bag through the second valve;

In the process of expanding the air bag, pressing the current residual oil in the liquid storage chamber into an oil transport vehicle through a first pipeline;

transferring the oil product in the oil tank to the oil product transport vehicle through the first pipeline and the second connecting component;

When the quantity of oil in the oil product transport vehicle reaches a preset threshold value, a third valve is opened, and air in the air bag is discharged through the third valve;

Opening a first valve, communicating external air through the first valve, and pressing the oil product currently remained in the first pipeline into the liquid storage chamber under the action of the air;

and closing the first valve and the third valve, and disconnecting the first joint from the oil product carrier.

10. The method of claim 9, wherein opening the second valve, through which air is introduced into the airbag, comprises:

raising the height of the lifting platform from the current height to a first height;

Opening the second valve under the condition that the lifting platform is at the first height, and introducing the air into the air bag through the second valve;

the opening of the third valve, the air in the air bag is discharged through the third valve, comprises:

Lowering the lifting platform from the first height to a second height, the second height being lower than the current height;

And opening the third valve under the condition that the lifting platform is at the second height, and discharging the air in the air bag through the third valve.