CN112591702A

CN112591702A - Oil recovery quality inspection system and aviation oil storage system

Info

Publication number: CN112591702A
Application number: CN202011552536.6A
Authority: CN
Inventors: 杨钊林; 侯民轩; 李伟明; 刘跃建; 黄怡斌
Original assignee: China Aviation Oil Co ltd East China Branch; China Aviation Oil Group Co ltd
Current assignee: China Aviation Oil Co ltd East China Branch; China Aviation Oil Group Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-04-02

Abstract

The application provides an oil recovery quality control system and aviation fuel storage system. The oil recovery quality inspection system comprises a main pipeline, an oil pump unit, a plurality of oil quality inspection units and an oil recovery unit. The main line includes exit end and a plurality of entrance point, the access connection exit end of oil pump unit, a plurality of oil quality inspection units are used for being connected with the oil storage tank that corresponds, and along main line interval distribution, oil quality inspection unit includes first flowmeter and sampler, first flowmeter and sampler parallel connection are between the export and the entrance point of oil storage tank, first flowmeter is used for measuring the volume of the oil that flows from the oil storage tank bottoms, the sampler is used for taking a sample and detecting the oil of oil storage tank bottoms, the export of the access connection oil pump unit of oil recovery unit, the exit linkage to entrance point of oil recovery unit. So set up, simplify arranging of pipeline, reduce cost to can avoid the staff directly to face the oil, protect staff's health and environment.

Description

Oil recovery quality inspection system and aviation oil storage system

Technical Field

The application relates to the technical field of aviation oil storage, in particular to an oil recovery quality inspection system and an aviation oil storage system comprising the same.

Background

With the rapid development of economy in China, the aviation industry is also greatly developed. Particularly, the aviation oil storage technology is in a rapidly growing state, the aviation oil storage technology is generally referred to as an oil product recovery technology, but the requirement for aviation oil recovery is higher and higher. In traditional oil recovery system, need be with the oil at a plurality of oil storage tank bottoms, retrieve and save through the recovery pipeline of difference respectively, its pipeline distribution is complicated and complicated, and area is big, and needs a large amount of manpower and material resources to produce higher expense.

When oil is recovered, the oil quality inspection is carried out after the oil at the bottom of the oil storage tank is discharged to a certain amount. In the prior art, the oil discharge process and the oil taking amount are completed by manual operation, so that workers need to directly face the oil and observe the amount of the oil, the harm to the bodies of the workers is great, and the oil is also exposed in the air and causes certain pollution to the environment.

Disclosure of Invention

The application provides a modified oil recovery quality testing system and includes oil recovery quality testing system's aviation oil storage system.

The embodiment of the application provides an oil recovery quality inspection system, includes:

a main pipeline comprising an outlet end and a plurality of inlet ends;

the inlet of the oil pump unit is connected with the outlet end;

the oil quality inspection units are connected with the corresponding oil storage tanks and distributed at intervals along the main pipeline, each oil quality inspection unit comprises a first flowmeter and a sampler, the first flowmeters and the samplers are connected between the outlet and the inlet of each oil storage tank in parallel, the first flowmeters are used for metering the amount of oil flowing out of the bottoms of the oil storage tanks, and the samplers are used for sampling and detecting the oil at the bottoms of the oil storage tanks;

the oil recovery unit, the entry linkage of oil recovery unit the export of oil pump unit, the export of oil recovery unit is connected to the entrance point, the main line is used for receiving from the oil that the oil quality control unit flows out, oil pump unit is used for with in the main line the oil carry to oil recovery unit, oil recovery unit is used for retrieving and storing the oil.

Optionally, the oil recovery quality inspection system includes a first electromagnetic valve disposed at an inlet of the first flowmeter, and the first electromagnetic valve is configured to control opening or closing of the inlet of the first flowmeter.

Optionally, the oil recovery quality inspection system includes a first controller electrically connected to the first solenoid valve and the first flow meter, and the first controller is configured to control the first solenoid valve to be turned off when the oil volume of the first flow meter reaches a preset volume, so as to close an inlet of the first flow meter.

Optionally, the oil recovery quality inspection system further includes a recovery pipeline, and the oil quality inspection units are distributed at intervals on two sides of the main pipeline and connected to the inlet end through the recovery pipeline.

Optionally, the main pipeline and the recovery pipeline are arranged on the same horizontal plane.

Optionally, the inlet of the oil pump unit is arranged at a position lower than the outlet end.

Optionally, the oil recovery quality inspection system further comprises a buffer pipeline, an inlet of the buffer pipeline is connected with the outlet end, an outlet of the buffer pipeline is connected with an inlet of the oil pump unit, and the inlet of the buffer pipeline is lower than the outlet end.

Optionally, the buffer pipeline includes a first end connected to the outlet end and a second end connected to an inlet of the oil pump unit, and a position of the second end is lower than a position of the first end.

Optionally, the oil recovery quality inspection system further comprises a buffer tank arranged at the outlet end, the setting position of the buffer tank is lower than that of the main pipeline, and the oil pump unit is arranged in the buffer tank.

Optionally, the oil pump unit includes a pump, an inlet valve and an outlet valve, the inlet valve is connected between the inlet of the pump and the outlet end, and the outlet valve is connected between the outlet of the pump and the inlet of the oil recovery unit.

Optionally, the inlet valve is kept in a normally open state; and/or

The outlet valve is not fully open.

Optionally, the oil pump unit further comprises an exhaust valve, and the exhaust valve is arranged between the outlet of the pump and the outlet valve.

Optionally, the exhaust valve comprises an automatic exhaust valve; and/or

The exhaust valve is kept in a normally open state.

Optionally, the oil recovery unit includes first oil recovery unit and second oil recovery unit, first oil recovery unit with second oil recovery unit parallel connection in the export of oil pump unit with between the entrance point, the oil quality of the oil product of first oil recovery unit recovery is higher than the oil quality of the oil product of second oil recovery unit recovery.

Optionally, the oil recovery unit includes second flowmeter and recovery jar, the access connection of recovery jar the export of oil pump unit, the second flowmeter connect in the export of recovery jar with between the entrance point, the second flowmeter is used for measuring the volume of the oil of recovery jar tank bottoms, the recovery jar is used for retrieving and storing the oil.

Optionally, the oil recovery quality inspection system includes a second electromagnetic valve disposed at an inlet of the second flowmeter, and the second electromagnetic valve is configured to control opening or closing of the inlet of the second flowmeter.

Optionally, the oil recovery quality inspection system includes a second controller, and the second controller is electrically connected to the second solenoid valve and the second flowmeter, and the second controller is configured to control the second solenoid valve to be powered off when the oil volume of the second flowmeter reaches a preset volume, so as to close the inlet of the second flowmeter.

Optionally, the recycling pipeline includes a first recycling pipeline and a second recycling pipeline, the recycling tank is connected to the outlet of the oil pump unit through the first recycling pipeline, and the second flowmeter is connected to the inlet end through the second recycling pipeline.

Optionally, a first ball valve is arranged on the second recovery pipeline, and the first ball valve is arranged at the downstream of the outlet of the second flowmeter.

Optionally, the recovery pipeline includes third recovery pipeline and fourth recovery pipeline, the second flowmeter passes through third recovery pipeline is connected to the pond of awaiting treatment, the second flowmeter passes through fourth recovery pipeline is connected to the zero-bit jar, the oil quality of the oil of storage in the pond of awaiting treatment is higher than the oil quality of the oil of storage in the zero-bit jar.

Optionally, a second ball valve is arranged on the third recovery pipeline, and the second ball valve is arranged at the upstream of the inlet of the tank to be treated; and a third ball valve is arranged on the fourth recovery pipeline and is arranged at the upstream of the inlet of the zero-position tank.

Optionally, the setting position of the first ball valve is higher than the setting positions of the second ball valve and the third ball valve.

Optionally, a safe liquid level line is arranged in the recovery tank, and the safe liquid level line is not more than half of the height of the recovery tank; the oil recovery quality inspection system further comprises a plurality of standby tanks and a conveying pipeline, the standby tanks are connected with the recovery tanks through the conveying pipeline, and the conveying pipeline is used for conveying at least part of oil in the recovery tanks to the standby tanks for storage when the oil in the recovery tanks exceeds the safe liquid level line.

Optionally, the recycling pipeline includes a third recycling pipeline and a fourth recycling pipeline; the first flowmeter is connected to the oil storage tank through the third recovery pipeline, and the first flowmeter is connected to the inlet end through the fourth recovery pipeline.

Optionally, the third recycling line and the fourth recycling line are disposed on the same horizontal plane.

Optionally, a fourth ball valve and a first automatic return valve are arranged on the third recovery pipeline, the fourth ball valve is arranged at the downstream of the outlet of the oil storage tank, and the first automatic return valve is arranged at the upstream of the inlet of the first flowmeter; and a fifth ball valve is arranged on the fourth recovery pipeline and is arranged at the downstream of the outlet of the first flowmeter.

Optionally, the fourth ball valve is kept in a normally open state.

Optionally, the recycling pipeline includes a fifth recycling pipeline and a sixth recycling pipeline; the sampler is connected with the third recovery pipeline through the fifth recovery pipeline, and the sampler is connected with the fourth recovery pipeline through the sixth recovery pipeline.

Optionally, the fifth recovery pipeline and the sixth recovery pipeline are arranged on the same horizontal plane.

Optionally, the arrangement positions of the fifth recovery pipeline and the sixth recovery pipeline are not higher than the arrangement positions of the third recovery pipeline and the fourth recovery pipeline.

Optionally, a second self-return valve is arranged on the fifth recovery pipeline, and the second self-return valve is arranged at the upstream of the inlet of the sampler.

The embodiment of the application still provides a aviation oil storage system, including a plurality of oil storage tanks and above-mentioned arbitrary oil recovery quality inspection system, a plurality of oil quality inspection units of oil recovery quality inspection system correspond a plurality of oil storage tanks.

According to the technical scheme provided by the embodiment of the application, the system comprises a main pipeline, an oil pump unit, a plurality of oil quality inspection units and an oil recovery unit, wherein the oil quality inspection units are connected with corresponding oil storage tanks, and are distributed at intervals along the main pipeline, the oil quality inspection unit comprises a first flowmeter and a sampler, the first flowmeter and the sampler are connected in parallel between the outlet and the inlet end of the oil storage tank, by the arrangement, the amount of the oil product flowing out of the bottom of the oil storage tank can be measured by the first flow meter, without the observation of the staff, the staff can be prevented from directly facing the oil product, the body and the environment of the staff are protected, in addition, the oil products at the bottoms of the oil product tanks of the oil storage tanks are discharged into the main pipeline by the oil product quality inspection units, and the oil in the main pipeline is uniformly conveyed to the oil recovery unit through the oil pump unit for recovery and storage, so that the arrangement of the pipeline is simplified, and the cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of a marine oil storage system of the present application;

FIG. 2 is a schematic diagram of a first flow meter of the oil quality inspection unit according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of an embodiment of the first flow meter shown in FIG. 2;

FIG. 4 is a circuit schematic of one embodiment of the first flow meter shown in FIG. 2;

FIG. 5 is a schematic cross-sectional view of an embodiment of the pump of the oil pump assembly of the present application, wherein the reed switch of the pump is open;

FIG. 6 is another schematic cross-sectional view of the pump of the oil pump assembly of FIG. 5, wherein the reed switch of the pump is closed;

FIG. 7 is a schematic structural diagram of another embodiment of the aviation fuel storage system of the present application;

fig. 8 is a schematic structural diagram of another embodiment of the aviation fuel storage system of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" includes two, and is equivalent to at least two. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The oil recovery quality inspection system of this application embodiment, including main line, oil pump unit, a plurality of oil quality inspection unit and oil recovery unit. Wherein, the main line includes exit end and a plurality of entrance point, the access connection exit end of oil pump unit, a plurality of oil quality inspection units are used for being connected with the oil storage tank that corresponds, and along main line interval distribution, oil quality inspection unit includes first flowmeter and sampler, first flowmeter and sampler parallel connection are between the export and the entrance point of oil storage tank, first flowmeter is used for measuring the volume of the oil that flows from the oil storage tank bottoms, the sampler is used for taking a sample and detecting the oil at the oil storage tank bottoms, the exit of the access connection oil pump unit of oil recovery unit, the exit linkage of oil recovery unit is to the entrance point, the main line is used for receiving the oil that flows from oil quality inspection unit, the oil pump unit is used for carrying the oil in the main line to oil recovery unit, oil recovery unit is used for retrieving and storing the oil.

So set up, the first flowmeter of accessible comes the measurement to follow the volume of the oil that the oil storage tank bottoms flowed out, and need not the staff and observe, avoid the staff directly to face the oil, it is beneficial to staff's health, and can not cause the pollution to the environment, and discharge into to the main pipeline with a plurality of oil quality testing units, and carry the oil in the main pipeline to oil recovery unit recovery and storage through oil pump unit is unified, compare with the correlation technique, shorten the recovery cycle, reduce manpower and time, and simplify arranging of pipeline, and the cost is reduced.

The application provides a system is stored to aviation oil, including a plurality of oil storage tanks and oil recovery quality inspection system, a plurality of oil quality inspection units of oil recovery quality inspection system correspond a plurality of oil storage tanks. In some embodiments, the aviation fuel storage system is used for quality detection and recycling of civil aviation fuel, and the oil recovery quality detection system can detect the oil stored at the bottom of the oil storage tank and recycle the oil again. Through being connected a plurality of oil storage tanks and oil recovery quality control system, the oil of examining the unit with a plurality of oil storage tank bottoms through a plurality of oil quality discharges to the main pipeline, and carry the oil in the main pipeline to oil recovery unit recovery and storage in unison through oil pump unit, compare with the correlation technique, simplify arranging of pipeline, reduce cost, at this in-process, the first flowmeter of accessible comes the measurement to follow the volume of the oil that the oil storage tank bottoms flowed out, and need not the staff and observe, avoid the staff directly to face the oil, it is beneficial to staff's health, and can not cause the pollution to the environment.

Fig. 1 is a schematic structural diagram of an embodiment of a marine oil storage system 200 according to the present application. The aviation fuel storage system 200 includes a plurality of storage tanks 50 and an oil recovery quality inspection system 100. As shown in fig. 1, the oil recovery quality inspection system 100 includes a plurality of oil recovery quality inspection units 10, a main pipeline 20, an oil pump unit 30, and an oil recovery unit 40. The oil quality inspection units 10 are connected to the same oil pump unit 30 through a main pipeline 20. In some embodiments, the main pipeline 20 includes an outlet end 21 and a plurality of inlet ends 22. The main pipeline 20 includes a tube body, and a plurality of inlet ends 22 are disposed on a wall of the tube body, and can be disposed at an end of the tube body away from the outlet end 21 (also can be understood as an end opposite to the outlet end 21), and the main pipeline 10 is used for receiving oil flowing out from the oil quality inspection unit 30. The oil product refers to petroleum products, can be aviation kerosene, and is called aviation kerosene for short. In other embodiments, the oil may be other petroleum products, and is not limited in this application. In some embodiments, the inlet of the oil pump assembly 30 is connected to the outlet end 21, and the oil pump assembly 30 is used for conveying the oil in the main pipeline 10 to the oil recovery unit 40. In the present embodiment, the oil pump unit 30 may be a self-priming centrifugal pump. In other embodiments, the oil pump assembly 30 may be other types of pumps, and is not limited in this application. In some embodiments, a plurality of oil quality inspection units 10 are used to connect with the corresponding oil storage tank 50, the plurality of oil quality inspection units 10 are distributed at intervals along the main pipeline 20, the outlet of the oil quality inspection unit 10 is connected to the inlet end 22, and the oil quality inspection unit 10 is used to receive the oil at the bottom of the oil storage tank 50 for inspection. The oil storage tank 50 is referred to as an oil tank, which has a large volume, and in order to ensure safety and meet national standards, two oil storage tanks 50 of the plurality of oil storage tanks 50 are spaced apart from each other, and the spacing between the two oil storage tanks 50 is not less than half of the sum of the heights of the two oil storage tanks 50. For example, in the present embodiment, the height of the storage tanks 50 is 18 meters, and the distance between the two storage tanks 50 in the direction along the main pipeline 20 is not shorter than 18 meters, so that the safety and the national standard can be ensured. Therefore, the plurality of oil quality inspection units 10 are distributed at intervals along the main pipeline 20, which meets the national standard and ensures safety.

In some embodiments, an inlet of the oil recovery unit 40 is connected to an outlet of the oil pump assembly 30, an outlet of the oil recovery unit 40 is connected to the inlet end 22, and the oil recovery unit 40 is used for recovering and storing oil. The oil recovery unit 40 is used for recovering oil with high oil quality, for example, the oil needs to be detected before being reused, and can be reused when the detection is qualified, and the oil with low oil quality can be stored and can be used for other treatments, so that the oil at the bottom of the oil storage tank 50 can be fully utilized, and the oil at the bottom of the oil storage tank 50 can be periodically recovered, thereby improving the quality of the oil in the oil storage tank 50. The oil of 50 tank bottoms of a plurality of oil storage tanks is discharged into to main line 20 through a plurality of oil quality testing units 10 to oil through in the main line 20 is unified to be carried to oil recovery unit 40 through oil pump unit 30 and is retrieved and save, simplify arranging of pipeline, and therefore, the cost is reduced, and because the oil volume that is used for the quality testing that discharges into corresponding oil quality testing unit 10 from 50 tank bottoms of each oil storage tank is less, collect unified recovery with the oil of 50 tank bottoms discharge of a plurality of oil storage tanks, can shorten the recovery cycle, reduce manpower and time.

In some embodiments, the oil quality inspection unit 10 includes a first flow meter 11 and a sampler 13, the first flow meter 11 and the sampler 13 are connected in parallel between the outlet end and the inlet end 21 of the oil storage tank 50, the first flow meter 11 is used for measuring the amount of oil flowing out from the bottom of the oil storage tank 50, and the sampler 13 is used for sampling and detecting the oil at the bottom of the oil storage tank 50. Since the recovery line 60 connected between the first flow meter 11 (or the sampler 13) and the oil storage tank 50 has a certain distance, the first flow meter 11 is required to measure the amount of the part of the oil at the bottom of the oil storage tank 50 (wherein, the part of the oil includes the oil in the third recovery line 65 connected between the first flow meter 11 and the oil storage tank 50) to discharge the part of the oil to the first flow meter 11, so that the oil obtained by the subsequent sampler 13 is more representative, and the detection error is smaller. So set up, measure the volume of the oil that flows from 50 tank bottoms of oil storage tank through first flowmeter 11, avoid the staff directly to face the oil, it is beneficial to staff's health, and can not cause the pollution to the environment.

In some embodiments, the oil recovery quality inspection system 10 includes a first solenoid valve 111 and a first controller 112, which are disposed at the inlet of the first flow meter 11, and the first solenoid valve 111 is used to control the opening or closing of the inlet of the first flow meter 11. The first controller 112 electrically connects the first solenoid valve 111 and the first flow meter 11, and the first controller 112 is configured to control the first solenoid valve 111 to be turned off to close the inlet of the first flow meter 11 when the flow rate of the first flow meter 11 reaches a preset capacity (e.g., 70L-90L, preferably 80L). In some embodiments, when it is required to discharge the oil at the bottom of the oil storage tank 50 to the first flow meter 11, the first flow meter 11 starts to meter the oil flowing out from the bottom of the oil storage tank 50 when the first controller 112 controls the first electromagnetic valve 111 to be opened. In some embodiments, when the oil amount of the first flow meter 11 reaches the preset capacity, a feedback signal is sent to the first controller 112, and the first controller 112 controls the first electromagnetic valve 111 to close, so that the first flow meter 11 finishes measuring the oil flowing out from the bottom of the oil storage tank 50.

Fig. 2 is a schematic structural diagram of an embodiment of the first flow meter 11 of the oil quality inspection unit 10 of the present application; FIG. 3 is a schematic cross-sectional view of an embodiment of the first flow meter 11 shown in FIG. 2; fig. 4 is a schematic circuit diagram of an embodiment of the first flowmeter 11 shown in fig. 2. In some embodiments, the first flow meter 11 may be a vortex flow meter. In other embodiments, the first flow meter 11 may also be a float flow meter. In other embodiments, the first flow meter 11 may also be another type of flow meter, which is not limited in this application and will not be described herein.

As shown in fig. 2 to 4, the first flowmeter 11 includes a case 111, a turbine 112 provided in the case 111, an induction coil 115 wound around the outside of the case 111, and a signal conversion circuit 113 electrically connected to the induction coil 115. The turbine 112 is used for generating a driving force for the oil product flowing into the inlet of the first flowmeter 11 to drive the oil product to rotate, the induction coil 115 is used for generating a corresponding induction signal when the oil product rotates, and the signal conversion circuit 113 is used for converting the induction signal into a corresponding flow value of the oil product.

In the embodiment shown in fig. 4, the signal conversion circuit 113 includes an amplifier 1131 connected to the induction coil 115, a counter 1132 and a frequency device 1133 electrically connected to the amplifier 1131, wherein the amplifier 1131 is used for amplifying and shaping the induction signal output by the induction coil 115, the counter 1132 is used for calculating and indicating the cumulative flow value of the oil flowing into the casing 111, and the frequency device 1133 is used for calculating and indicating the instantaneous flow value of the oil flowing into the casing 111. In some embodiments, the first flow meter 11 further includes a display 114 (shown in fig. 2), which is electrically connected to the signal conversion circuit 113 (electrically connected to the counter 1132 and the frequency device 1133) for displaying the accumulated flow value and the instantaneous flow meter output by the signal conversion circuit 113, so as to facilitate observation by a worker.

In some embodiments, turbine 112 includes a bearing 1121 and a blade 1122 secured to the bearing, the bearing 1121 being secured within housing 111. When oil flows into the casing 111, the oil impacts the blades 1122 of the turbine 112, and a driving torque is generated to the blades 1122, so that the blades 1122 are rotated against a frictional torque and an oil resistance torque. Within a certain flow range, the angular velocity of the blades 1122 is proportional to the flow rate of the oil for a certain viscosity of the oil medium. Thus, the flow velocity of the oil can be obtained by the rotational angular velocity of the vanes 1122, so that the amount of the oil passing through the housing 111 can be calculated. In some embodiments, the rotational speed of blades 1122 is sensed by induction coils 115 mounted outside of housing 111. The blades 1122, when they cut the magnetic lines of force generated by the permanent magnet steel in the housing 111, cause a change in the magnetic flux in the induction coil 115. In the embodiment of fig. 3, the induction coil 115 and the permanent magnet 116 are fixed together on the housing 111. When the ferromagnetic blades 1122 pass the permanent magnet 116, a magnetic flux change is induced in the induction coil 115, thereby generating an induction signal.

Further, the induction coil 115 sends the detected magnetic flux periodic variation signal (induction signal) to the amplifier 1131, amplifies and shapes the signal, generates a pulse signal proportional to the flow rate, and sends the pulse signal to the counter 1132, which performs unit conversion and flow rate accumulation calculation to obtain and display the accumulated flow rate value (i.e., the amount of oil flowing out of the bottom of the oil storage tank 50). Meanwhile, the pulse signal can be sent to the frequency device 1133, and the pulse signal is converted into an analog current amount, so as to indicate the instantaneous flow value (i.e. the instantaneous amount of the oil flowing out from the bottom of the oil storage tank 50 can be displayed). Then, the accumulated flow value and the instantaneous flow meter are displayed through the display 114, which is convenient for the staff to observe.

So configured, the first flow meter 11 can be used to detect the amount of oil in the moment and the total accumulated amount, the output signal is frequency, it is easy to digitize, and the pressure loss of the first flow meter 11 is small, the blade 1122 can be protected from corrosion, and it can measure viscous and corrosive media. Compared with the related art, the first flowmeter 11 can meter the amount (including the total amount and the instantaneous flow) of the oil product flowing out of the bottom of the oil storage tank 50, so that workers are prevented from directly facing the oil product, the physical benefit of the workers is realized, and the environment is not polluted.

In some embodiments, the oil quality inspection units 10 may be disposed in multiple numbers (e.g., 3 or more than 3), and the oil quality inspection units 10 are distributed at intervals on two sides of the main pipeline 20, so that the areas on two sides of the main pipeline 20 can be effectively utilized, and the oil quality inspection units 10 are uniformly distributed, thereby reducing the floor area, simplifying the distribution of the pipeline, and reducing the cost. In some embodiments, the oil recovery quality inspection system 100 further includes a recovery pipeline 60, and the plurality of oil quality inspection units 10 are connected to the inlet end 22 through the recovery pipeline 60. The oil quality inspection units 10 are connected to the inlet end 22 in a gathering manner through the recovery pipeline 60, so that the number of laid main pipelines 20 is reduced, the floor area of the main pipelines 20 is reduced, the pipeline distribution is simplified, and the cost is reduced.

In this embodiment, the oil storage tank 50 is a conical bottom tank (as shown in fig. 1), and by using the static pressure generated by the conical bottom tank (the static pressure generated by the conical bottom tank is very large, and the generated pressure is also very large), the main pipeline 20 and the recovery pipeline 60 are arranged on the same horizontal plane, so that the water and impurities at the bottom of the oil storage tank 50 are conveniently discharged, and the recovery efficiency is improved. In addition, because the whole system occupies a large area, the construction complexity can be reduced and the cost can be reduced by horizontally arranging the main pipeline 20 and the recovery pipeline 60 and arranging the main pipeline 20 and the recovery pipeline 60 on the same horizontal plane. In other embodiments, the main conduit 20 and the recovery conduit 60 may not be at the same level.

In some embodiments, the pump assembly 30 includes a self-priming centrifugal pump that is capable of delivering oil due to centrifugal force. In some embodiments, the oil pump assembly 30 includes a pump 31, an inlet valve 32, and an outlet valve 33, the inlet valve 32 being connected between the inlet and outlet ends 21 of the pump 31, and the outlet valve 33 being connected between the outlet of the pump 31 and the inlet of the oil recovery unit 40. To ensure that all the oil discharged from the outlet end 21 can be discharged into the pump 31, the inlet size of the pump 31 is adapted to the size of the outlet end 21. Before the oil pump unit 30 works, the pump unit 31 must be filled with oil to form a vacuum state, when the impeller rotates rapidly, the oil is forced to rotate rapidly by the blades, the rotating oil flies away from the impeller under the action of centrifugal force, after the oil in the pump unit 31 is thrown out, the central part of the impeller forms a vacuum area, and the oil in the main pipeline 20 is pressed into the oil recovery system 40 through the recovery pipeline 60 under the action of atmospheric pressure or oil pressure. Thus, continuous oil pumping can be realized by circulating operation. It should be noted that the self-priming centrifugal pump can be started before the pump 31 is started, after the pump 31 is filled with oil, otherwise the pump 31 will generate heat, vibrate, and the amount of oil discharged is reduced, which damages the oil pump unit 30 and causes equipment accidents. Therefore, the inlet of the oil pump unit 30 is set at a position lower than the outlet end 21, and the inlet valve 32 is kept in a normally open state, so that the inlet of the oil pump unit 30 (pump 31) is kept in a state filled with oil before starting, which can ensure that the oil pump unit 30 (pump 31) can normally operate. Further, in order to ensure that the pump 31 can smoothly convey the oil in the main pipeline 20 to the oil recovery system 40, the outlet valve 33 is not fully opened, for example, the opening of the outlet valve 33 is not more than a quarter, so that the conveying pressure can be increased, and the conveying speed can be increased, thereby quickly recovering the oil in the main pipeline 20 and the oil in the recovery pipeline 60 to the oil recovery system 40. The opening degree of the outlet valve 33 is determined according to the model (rated voltage/current) of the pump 31. When the pump 31 is used, the outlet valve 33 is opened to a quarter of the opening of the outlet valve 33 to generate a pressure, and the generated pressure can press the oil in the main pipeline 20 into the oil recovery system 40. If the opening degree of the outlet valve 33 is too large, a strong pressure is generated, and for example, the pressure is too large or the load is too high immediately at the time of start-up, and the rated voltage/current of the pump 31 is reached, so that the pump 31 is easily burned out. Therefore, the outlet valve 33 is not fully opened immediately after the pump 31 is started, for example, the opening of the outlet valve 33 is not more than a quarter of the way open, and therefore, the generated pressure is sufficient on the one hand, and no adverse effect is exerted on the pump 31 itself on the other hand.

Fig. 5 is a schematic cross-sectional view of an embodiment of the pump 31 of the oil pump assembly 30 of the present application, wherein the reed switch 311 of the pump 31 is open; fig. 6 shows another schematic cross-sectional view of the pump 31 of the oil pump assembly 30 shown in fig. 5, in which the reed switch 311 of the pump 31 is closed. In some embodiments, the oil pump assembly 30 includes an automatic mode. As shown in fig. 5 and 6, a float switch is provided in the pump 31, the float switch includes a magnetic reed switch 311 and a float 312 provided in the magnetic reed switch 311, and the magnetic reed switch 311 is electrically connected to an external power switch. In some embodiments, reed switch 311 comprises two magnetizable reeds 313 (typically composed of two metals, iron and nickel) and a magnet 314 disposed inside floating ball 312, wherein magnet 314 may be a permanent magnet or an electromagnetic coil, and two reeds 313 are sealed in a glass tube, and reeds 313 function as a magnetic flux conductor. As shown in fig. 5, the two reeds 313 do not contact when not yet operated. As shown in fig. 6, when the magnetic field generated by the magnet 314, the external magnetic field generates different polarities near the end positions of the two reeds, when the magnetic force exceeds the elastic force of the reeds 313, the two reeds 313 attract and conduct the circuit, and when the magnetic field is weakened or disappeared, the reeds 313 are released due to the elasticity of the reeds 313, and the two reeds 313 are separated to open the circuit. In this embodiment, when the water level in the pump 31 rises, the float 312 drives the magnet 314 to rise, and under the action of the applied magnetic field, the two reeds 313 attract each other to turn on the power switch, and at this time, the pump 31 is started; when the water level in the pump 31 drops, the float 312 drives the magnet 314 to drop, and after the magnetic field is weakened or disappears, the spring 313 is released due to its elasticity, and the pump 31 is closed. Compared with the prior art, the pump 31 using the oil pump unit 30 can realize automatic oil pumping and automatic closing without real-time monitoring of workers, so that a large amount of manpower is reduced, and in the embodiment, only one oil pump unit 30 is needed to provide power, so that the oil collected in the main pipeline 20 is recovered to the oil recovery unit 40, compared with the prior art, the number of the oil pump units 30 is reduced, and the cost is reduced. When the liquid level in the float switch reaches a certain height, the magnetic reed switch 311 is closed, and the pump 31 can be started. If the oil quality inspection unit 10 of each oil storage tank 50 is connected with one oil pump assembly 30, less oil is pumped out due to less oil, more oil is left in the recovery pipeline 60 of the oil quality inspection unit 10, and the oil discharged from the bottoms of the oil storage tanks 50 flows into the main pipeline 50, so that the total amount of the oil flowing into the inlet of the pump 31 is more and is collected uniformly, the liquid level in the float switch is higher, the closing time of the magnetic spring switch 311 of the float switch is long, and more oil is pumped out by the pump 31.

It should be noted that when oil needs to be recovered, a worker needs to turn on a main power supply of a power distribution cabinet connected to the pump 31, and place the control mode of the pump 31 in an automatic mode, and when oil in the main pipeline 20 flows into the pump 31, and the floating ball 312 drives the permanent magnet or the electromagnetic coil 314 to rise and the two reeds 313 attract each other, the pump can be started to discharge the oil into the oil recovery unit 40. When the oil in the main pipeline 20 flows into the pump 31 and the floating ball 312 drives the permanent magnet or the electromagnetic coil 314 to descend, the two reeds 313 are released after the magnetic field is weakened or disappears, thereby ending the recovery. After the recovery is completed, the main power supply of the power distribution cabinet is turned off, the control mode of the pump 31 is set to the intermediate mode, and the outlet valve 33 of the pump 31 is closed, where the intermediate mode may be a non-automatic mode, which is not limited in this application.

In some embodiments, the oil pump assembly 30 further includes a vent valve 34, the vent valve 34 is disposed between the outlet of the pump 31 and the outlet valve 33, and the vent valve 34 is used for exhausting air in the pump 31 to ensure that the oil delivered at the outlet valve 34 is free of air. In some embodiments, the purge valve 34 comprises an automatic purge valve. In some embodiments, a float switch (not shown) is disposed in the exhaust valve 34, the exhaust valve 34 is kept in a normally open state, when the pump 31 is just started, oil in the pump 31 is not output from the full outlet, and some air is exhausted through the exhaust valve 34 (generally, air is exhausted upwards), and then along with the rise of the oil level, when the oil in the pump 31 is output from the full outlet, that is, the float switch reaches the upper limit of the liquid level, at this time, the exhaust valve 34 is automatically closed, and no operation by a person is needed, which is simple and fast.

Fig. 7 is a schematic structural diagram of another embodiment of the aviation fuel storage system 200 of the present application. In this embodiment, the oil pump unit 30 is a self-priming centrifugal pump, so as to ensure that the inlet of the oil pump unit 30 is kept filled with oil before starting. As shown in fig. 7, the oil recovery quality inspection system 100 further includes a buffer pipeline 23, an inlet of the buffer pipeline 23 is connected to the outlet end 21, an outlet of the buffer pipeline 23 is connected to an inlet of the oil pump unit 30, and a position of the inlet of the buffer pipeline 23 is lower than a position of the outlet end 21, so that a potential difference exists between the inlet of the oil pump unit 30 and the outlet end 21 of the main pipeline 20, and the inlet of the pump 31 is filled with oil as much as possible. Because the liquid level in the pump 31 can be started when reaching a certain height, if the oil quality inspection unit 10 of each oil storage tank 50 is connected with one oil pump assembly 30, the pump 31 cannot be started because of less oil, and under the condition that the pump 31 can be started, less oil is pumped out, and more oil is left in the recovery pipeline 60 of the oil quality inspection unit 10. If the oil of 50 tank bottoms exhaust of a plurality of oil storage tanks flows into in main line 50, make the oil total amount of the import that flows into pump machine 31 more, unify and summarize, the liquid level in pump machine 31 is higher, thereby make the import of pump machine 31 fill up the oil as far as possible, guarantee can normally start, and can make the oil of pumping more through unified recovery, in addition, the oil in main line 20 can still be guaranteed to discharge more easily in the position that sets up that the inlet of buffer pipeline 23 is less than exit end 21.

In some embodiments, the buffer line 23 includes a first end 231 connected to the outlet end 21 and a second end 232 connected to the inlet of the oil pump assembly 30, and the second end 232 is disposed at a position lower than the first end 231. Since the amount of oil discharged from the bottom of each oil storage tank 50 to the corresponding oil quality inspection unit 10 is relatively small, the second end 232 is disposed at a position lower than the first end 231, that is, there is a potential difference between the second end 232 and the first end 231, so that there is a potential difference between the inlet of the oil pump unit 30 connected to the second end 232 and the outlet end 21 of the main pipeline 20 connected to the first end 231, and the inlet of the pump 31 is filled with oil as much as possible. Because the liquid level in the pump 31 can be started when reaching a certain height, if the oil quality inspection unit 10 of each oil storage tank 50 is connected with one oil pump assembly 30, the pump 31 cannot be started because of less oil, and under the condition that the pump 31 can be started, less oil is pumped out, and more oil is left in the recovery pipeline 60 of the oil quality inspection unit 10. If the oil that a plurality of oil storage tanks 50 tank bottoms discharge flows into in the main pipeline 50, make the total amount of oil that flows into the import of pump machine 31 more, unify and summarize, the liquid level in the pump machine 31 is higher to guarantee that the import of pump machine 31 fills up the oil as far as possible, guarantee can normally start, and can make the oil that pumps more through unified recovery. In addition, the existence of a difference in terrain between the inlet of the oil pump assembly 30 connected to the second end 232 and the outlet end 21 of the main pipeline 20 connected to the first end 231 also ensures that the oil in the main pipeline 20 is easier to discharge. In some embodiments, the first end 231 of the buffer pipeline 23 has a pipe diameter matched with that of the outlet end 21, and the second end 232 of the buffer pipeline 23 has a pipe diameter matched with that of the inlet of the oil pump unit 30 (pump 31). In some embodiments, the first end 231 of the buffer pipeline 23 may be located at the same level as the outlet end 21, and the second end 232 of the buffer pipeline 23 is located at a position lower than the position of the first end 231 of the buffer pipeline 23, so that there is a potential difference between the inlet of the oil pump assembly 30 and the outlet end 21 of the main pipeline 20, and thus the inlet of the pump 31 is filled with oil to ensure normal starting. In other embodiments, the first end 231 of the buffer pipeline 23 is disposed obliquely and may have a predetermined angle with the outlet end 21, and the second end 232 of the buffer pipeline 23 may be disposed horizontally and is disposed at a position lower than the position of the outlet end 21, so that there is a potential difference between the inlet of the oil pump assembly 30 and the outlet end 21 of the main pipeline 20, and thus the inlet of the pump 31 is filled with oil to ensure normal starting.

Fig. 8 is a schematic structural diagram of yet another embodiment of a marine oil storage system 200 according to the present application. As shown in fig. 8, the oil recovery quality inspection system 100 includes a buffer tank 24 disposed at the outlet end 21, and is configured to ensure that the inlet of the pump 31 is filled with oil as much as possible by disposing the buffer tank 24 at a position lower than the main pipeline 20, and disposing the oil pump unit 30 in the buffer tank 24 (in the embodiment shown in fig. 8, the pump 31 and the inlet valve 32 are disposed in the buffer tank 24, and the pipeline connected to the inlet valve 32 of the pump 31 extends along the wall of the buffer tank 24 (as shown in fig. 8), and because the amount of oil discharged from the bottom of each oil storage tank 50 into the corresponding oil quality inspection unit 10 is relatively small, by disposing the oil pump unit 30 in the buffer tank 24 with a relatively low terrain, the inlet of the oil pump unit 30 (the pump 31) and the outlet end 21 of the main pipeline 20 have a terrain difference, on one hand, the oil discharged from the bottoms of the oil storage tanks 50 can be collected and uniformly flowed into the main pipeline 50, the inlet of the pump 31 is ensured to be filled with oil as much as possible, normal starting is ensured, and on the other hand, the oil in the main pipeline 20 can be smoothly discharged.

In some embodiments, the oil recovery unit 40 includes a first oil recovery unit 40a and a second oil recovery unit 40b, the first oil recovery unit 40a and the second oil recovery unit 40b are connected in parallel between the outlet and the inlet end 22 of the oil pump unit 30, and the oil quality of the oil recovered by the first oil recovery unit 40a is higher than that of the oil recovered by the second oil recovery unit 40 b. When the oil is recycled, clean oil is discharged into the first oil recycling unit 40a, and oil with low quality or moisture or impurities is discharged into the second oil recycling unit 40 b. For example, clean oil can be detected again, the oil can be recycled if the quality of the oil meets the requirement, the oil with low quality or with moisture or impurities can be subjected to other treatment, for example, the oil can be discharged into a water-oil separation tank or a dirty oil tank or oil tank bottom discharge operation, and the specific measures can be selected according to the quality of the actual oil, and are not limited in the application.

It should be noted that the first oil recovery unit 40a and the second oil recovery unit 40b have the same structure, and are denoted by the same reference numerals in the embodiment shown in fig. 1, and are not described again here.

In some embodiments, the recovery line 60 includes a first recovery line 61 and a second recovery line 62, the oil recovery unit 40 includes a recovery tank 41 and a second flow meter 42, the recovery tank 41 is connected to the outlet (outlet valve 33) of the oil pump assembly 30 through the first recovery line 61, and the second flow meter 42 is connected to the inlet end 21 through the second recovery line 62. The recovery tank 41 is used to recover the oil discharged through the pump 31, and the second flow meter 42 is used to meter the amount of the oil flowing out of the recovery tank 41 in order to prevent the occurrence of microbial contamination. The second flow meter 42 may be a vortex flow meter. In other embodiments, the first flow meter 11 may also be a float flow meter. In other embodiments, the second flow meter 42 may be other types of flow meters, and is not limited in this application. It should be noted that the second flow meter 42 is similar to the first flow meter 11 of the above embodiment, and the structure and principle thereof are also similar, and are not described herein again.

In some embodiments, the oil recovery quality inspection system 10 includes a second solenoid valve 421 and a second controller 422, which are disposed at the inlet of the second flow meter 11, and the second solenoid valve 421 is used to control the opening or closing of the inlet of the second flow meter 11. The second controller 422 is electrically connected to the second electromagnetic valve 421 and the second flow meter 11, and the second controller 422 is configured to control the second electromagnetic valve 421 to be disconnected when the flow rate of the second flow meter 11 reaches a preset capacity, so as to close the inlet of the second flow meter 11. In some embodiments, when it is required to discharge the oil at the bottom of the oil storage tank 50 to the second flow meter 11, the second controller 422 controls the second electromagnetic valve 421 to be opened, and the second flow meter 11 starts to meter the oil flowing out from the bottom of the oil storage tank 50. In some embodiments, when the oil amount of the second flow meter 11 reaches the preset capacity, a feedback signal is sent to the second controller 422, and the second controller 422 controls the second electromagnetic valve 421 to close, so that the second flow meter 11 finishes measuring the oil flowing out from the bottom of the oil storage tank 50.

In some embodiments, a first ball valve 621 is disposed on the second recovery pipe 62, and the first ball valve 621 is disposed downstream of the outlet of the second flow meter 42. Before the discharge is checked, the first ball valve 621 is in a closed state, and in order to prevent the oil (for example, oil with low oil quality) remaining in the second flow meter 42 from being discharged to the main pipeline 20, the first ball valve is opened before the recovery discharge is needed, and is closed when the recovery discharge is not needed, so that the first ball valve is prevented from being mixed with clean oil and being wasted. In some embodiments, the recycling line 60 includes a third recycling line 63 and a fourth recycling line 64, the second flow meter 42 is connected to the pool to be treated 44 through the third recycling line 63, the second flow meter 42 is connected to the null-position tank 45 through the fourth recycling line 64, and the oil quality of the oil stored in the pool to be treated 44 is higher than that of the oil stored in the null-position tank 45. Because the oil quality inspection unit 10 receives the oil at the bottom of the oil storage tank 50, the oil can contain partial moisture or impurities due to long-term sedimentation, and the partial moisture or impurities sequentially pass through the main pipeline 20 and the oil pump unit 30 and are discharged into the recovery tank 41, most of the oil recovered in the recovery tank 41 contains moisture or impurities, and therefore the oil in the recovery tank 41 is received again through the second flowmeter 42 for classification treatment, for example, the oil is respectively discharged into the to-be-treated tank 44 and the zero-position tank 45 with different oil qualities, and the waste of the oil is avoided. Here, the tank to be treated 44 may be an oil treatment tank, and the zero-position tank 45 may be an underground sump tank in which the oil quality of the oil stored therein is lower than the oil quality of the oil stored in the oil treatment tank.

In some embodiments, a second ball valve 631 is disposed on the third recycling line 63, and the second ball valve 631 is disposed upstream of the inlet of the tank 44 to be treated. Since the second ball valve 631 is disposed at the bottom of the second flow meter 42, before the discharge is checked, the second ball valve 631 is in a closed state, so as to prevent the oil (e.g., clean oil) remaining in the second flow meter 42 from being discharged to the pool 44 to be treated, and therefore, the second ball valve 631 is opened before the discharge needs to be recovered, so as to prevent the clean oil from being mixed with the pool 44 to be treated, thereby avoiding waste. In some embodiments, a third ball valve 641 is disposed on the fourth recovery pipe 64, and the third ball valve 641 is disposed upstream of the inlet of the null tank 45. Because the third ball valve 641 is disposed at the bottom of the second flow meter 42, before the discharge is checked, the third ball valve 641 is in a closed state, so as to prevent the oil product (e.g., clean oil product) remaining in the second flow meter 42 from being discharged to the zero-position tank 45, and therefore, the third ball valve 641 is opened before the discharge needs to be recovered, so as to prevent the clean oil product from being mixed into the zero-position tank 45, and avoid waste. In some embodiments, the first ball valve 621 is disposed at a higher position than the second and

third ball valves

631 and 641. Since some of the impurities or water settle to the bottom in the mixed oil (here, the mixed oil refers to oil containing moisture or impurities), the second ball valve 631 and the third ball valve 641 are disposed at the bottom of the second flow meter 42, and the position of the first ball valve 621 is higher than the positions of the second ball valve 631 and the third ball valve 641, so that the moisture or impurities in the second flow meter 42 are more easily discharged. In the process, when the metering is required, the second controller 422 sends a control signal to the second solenoid valve 412 to open the second solenoid valve 412, at which time the second flow meter 42 starts to meter, and when the second flow meter 42 reaches a preset capacity, sends a feedback signal to the second controller 422, at which time the second controller 422 controls the second solenoid valve 412 to close to end the metering.

In some embodiments, a safety fluid level line is provided within the recovery tank 41, the safety fluid level line not exceeding half the height of the recovery tank 41. In the present embodiment, the height of the recovery tank 41 is 8 meters, and the safe liquid level line does not exceed half of the height of the recovery tank 41, i.e., 4 meters. In this embodiment, the safe liquid level line is set to 3.5 meters, and more than half of the space is reserved, so that the oil product can be recovered in emergency. In some embodiments, the oil recovery quality inspection system 100 further includes a plurality of backup tanks 70 and a conveying pipeline 80, the backup tanks 70 are connected to the recovery tank 41 through the conveying pipeline 80, and the conveying pipeline 80 is used for conveying at least part of the oil in the recovery tank 41 to the backup tanks 70 for storage when the oil in the recovery tank 41 exceeds a safe liquid level. In this embodiment, for example, when the oil in the recovery tank 41 exceeds 3.5 meters, the recovered oil is transported to the empty standby tank 70 through the transportation pipeline 80 for storage, and whether the oil reaches the standard needs to be detected again when the oil is reused, and the oil can be reused only when the oil reaches the standard is detected, so as to be recycled, thereby avoiding waste of the oil.

In some embodiments, the recovery line 60 includes a third recovery line 65 and a fourth recovery line 66; the oil quality inspection unit 10 includes a first flow meter 11, the first flow meter 11 is connected to the oil storage tank 50 through a third recovery pipeline 65, and the first flow meter 11 is connected to the inlet end 21 through a fourth recovery pipeline 66. The first flow meter 11 is used to meter the amount of oil flowing out of the bottom of the storage tank 50. Since the recovery line 60 connected between the first flow meter 11 (or the sampler 13) and the oil storage tank 50 has a certain distance, the first flow meter 11 is required to measure the amount of the part of the oil at the bottom of the oil storage tank 50 (wherein, the part of the oil includes the oil in the third recovery line 65 connected between the first flow meter 11 and the oil storage tank 50) to discharge the part of the oil to the first flow meter 11, so as to make the oil obtained by the subsequent sampler 13 more representative. When the metering is needed, the controller 112 sends a control signal to the first electromagnetic valve 111 to open the first electromagnetic valve 111, at which time the first flow meter 11 starts to meter, and when the first flow meter 11 reaches a preset capacity, sends a feedback signal to the first controller 112, at which time the first controller 112 controls the first electromagnetic valve 111 to close to finish the metering. The preset capacity here may be 70L-90L, preferably 80L. The first flowmeter 11 can measure the amount of oil flowing out of the bottom of the oil storage tank 50, when the amount of oil flowing out reaches the preset capacity, the first controller 112 controls the first electromagnetic valve 111 to close the inlet of the first flowmeter 11, at the moment, the amount of oil flowing out of the bottom of the oil storage tank 50 can be observed in the display 114 of the first flowmeter 11, so that the staff can observe conveniently, and meanwhile, the staff can observe the instantaneous value of the amount of oil flowing out of the bottom of the oil storage tank 50 in the display 114. Compared with the related art, the first flowmeter 11 can measure the amount (including the total amount and the instantaneous flow) of the oil product flowing out of the bottom of the oil storage tank 50, but does not need to be observed by a worker, so that the worker is prevented from directly facing the oil product, the oil product is beneficial to the body of the worker, and the environment is not polluted.

In this embodiment, the oil storage tank 50 is a cone-bottom tank (as shown in fig. 1), and the static pressure generated by the cone-bottom tank is utilized to facilitate the discharge of the water and impurities at the bottom of the oil storage tank 50 by arranging the third recovery pipeline 65 and the fourth recovery pipeline 66 at the same level and arranging the third recovery pipeline 65 and the fourth recovery pipeline 66 at the same level. In addition, since the whole system occupies a large area, the third recovery pipeline 65 and the fourth recovery pipeline 66 are arranged on the same horizontal plane, so that the construction difficulty can be reduced, and the cost can be reduced. In some embodiments, a fourth ball valve 651 and a first self-return valve 652 are disposed on the third recovery line 65, and the fourth ball valve 651 is disposed downstream of the outlet of the oil tank 50. In some embodiments, the fourth ball valve 651 is normally open, so that oil is retained in the third recovery pipe 65, and when it is detected, the first automatic return valve 652 needs to be opened to allow the oil in the oil storage tank 50 to flow into the first flow meter 11, and at this time, the pressure of the oil received by the first automatic return valve 652 is slowly released, rather than being increased instantly, so as to protect the first flow meter 11. Because in this embodiment, what oil storage tank 50 adopted is the cone bottom jar, can produce very strong static pressure, if fourth ball valve 651 keeps the closure state, just open when needs detect, can produce great pressure this moment, cause pressure too big to third recovery pipeline 65 and first flowmeter 11, consequently, for avoiding appearing the potential safety hazard, keep normally open state with fourth ball valve 651 earlier, can alleviate oil storage tank 50 tank bottoms and produce the static pressure to improve the security. In some embodiments, the first self-return valve 652 is disposed upstream of an inlet of the first flow meter 11. The first automatic return valve 652 is opened when detection is needed, and when the oil product in the first flow meter 11 reaches a preset volume, the first electromagnetic valve is controlled to be closed through the first controller 112 so as to close the inlet of the first flow meter 11, so that operation by a worker is not needed, and the operation is convenient and fast. In some embodiments, a fifth ball valve 661 is provided on the fourth recovery pipe 66, and the fifth ball valve 661 is provided downstream of the outlet of the first flow meter 11. The opening is carried out when the oil in the first flow meter 11 needs to be discharged, in order to prevent the oil (for example, oil with low oil quality) remained in the first flow meter 11 from being discharged to the main pipeline 20, the opening is carried out before the oil needs to be recovered and discharged, the mixing with clean oil is avoided, and the waste is avoided.

In some embodiments, the recycling line 60 includes a fifth recycling line 67 and a sixth recycling line 68; the oil quality inspection unit 10 comprises a sampler 13, the sampler 13 is connected with the third recovery pipeline 65 through a fifth recovery pipeline 67, and the sampler 13 is connected with the fourth recovery pipeline 66 through a sixth recovery pipeline 68. In this embodiment, the sixth recycling pipe 68 is connected to the fourth recycling pipe 66, and collected to the same point, and then connected to the inlet end 22 of the main pipe 20, so that the number of the inlet ends 22 arranged on the main pipe 20 can be reduced, and in addition, the sixth recycling pipe 68 and the fourth recycling pipe 66 are collected to the same point for assembly, which is convenient for assembly and maintenance. In some embodiments, a quality check scale is provided in the sampler 13 (e.g., at a position four fifths of the sampling area of the sampler), and when detection is required, the oil is discharged into the sampler 13 and then observed, and the oil is mainly visually checked for free water, suspended water and solid impurities, if the visual inspection cannot determine the water content, the oil can be further checked for water content by a water meter (for current use, quality inspection of a spare tank or quality inspection of an oil storage tank, the oil must be checked for water content by the water meter).

In this embodiment, the oil storage tank 50 is a cone-bottom tank (as shown in fig. 1), and the water and impurities at the bottom of the oil storage tank 50 are easily discharged by using the static pressure generated by the cone-bottom tank and by arranging the fifth recovery pipeline 67 and the sixth recovery pipeline 66 at the same level. In addition, since the whole system occupies a large area, the third recovery pipeline 65 and the fourth recovery pipeline 66 are arranged on the same horizontal plane, so that the construction difficulty can be reduced, and the cost can be reduced. Through the arrangement positions of the fifth recovery pipeline 67 and the sixth recovery pipeline 68 which are not higher than the arrangement positions of the third recovery pipeline 65 and the fourth recovery pipeline 66, more oil (containing moisture and impurities) at the bottom of the oil storage tank 50 is discharged to the sampler 13, and the detection result of the sampler 13 when detecting whether the oil contains free water, suspended moisture and solid impurities is more accurate. In some embodiments, a second self-return valve 671 is provided on the fifth recovery line 67, the second self-return valve 671 being provided upstream of the inlet of the sampler 13. The second self-return valve 671 is opened when detection is needed, and is automatically closed when oil in the sampler 13 reaches a quality inspection scale mark, so that operation of workers is not needed, and convenience and rapidness are realized.

When the oil quality is inspected, it is checked whether the fourth ball valve 651 is normally open or not (in general, the fourth ball valve 651 is normally open, and if the fourth ball valve 651 is closed, the fourth ball valve 651 is opened), and then the fifth ball valve 661 is opened to ensure that the third recovery pipeline 65 and the fourth recovery pipeline 66 connected to the first flowmeter 11 are communicated with each other, so as to ensure that the oil in the third recovery pipeline 65 and the fourth recovery pipeline 66 can smoothly flow out.

Further, a second self-return valve 671 is opened to flush the sampler 13. Wherein the oil is discharged to the quality check scale (about four fifths of the closed circuit probe), then the second self-return valve 671 is closed, then the ball valve (not shown) at the bottom of the outlet of the probe 13 is opened for emptying, and finally the ball valve at the bottom of the outlet of the probe 13 is closed. This step is used for flushing the sampler 13 through the oil to be quality tested, making the test result more accurate.

Further, the first self-return valve 652 is opened, and the first electromagnetic valve 111 is controlled to be opened by the first controller 112, so that the first flow meter 11 starts to measure, in the process, the amount of the oil product flowing out of the bottom of the oil storage tank 50 can be observed by observing the display 114 of the first flow meter 11, and the operator does not need to directly face the oil product, so that the harm to the body and the pollution to the environment can be avoided. After the first flow meter 11 reaches a preset capacity (for example, 70L-90L, preferably 80L), the first electromagnetic valve 111 is controlled by the first controller 112 to close, so that the first flow meter 11 finishes metering, and then the first automatic return valve 652 is closed. Since the third recovery line 65 connected between the first flow meter 11 and the oil storage tank 50 has a certain distance, it is necessary to discharge a part of the oil to the first flow meter 11, and the first flow meter 11 functions to meter the amount of the oil flowing out from the bottom of the oil storage tank 50. Wherein the part of the oil product includes the part of the oil product discharged from the third recovery pipeline 65 connected between the first flowmeter 11 and the oil storage tank 50, and the arrangement is such that the detection result of the subsequent sampler 13 is more accurate.

Further, the second self-return valve 671 is opened and the second self-return valve 671 is closed after oil is discharged to the sampler to the quality inspection scale (about four fifths of the closed sampling section). Then visually checking whether the oil product contains free water, suspended water and solid impurities, if the visual check can not determine the water content, further checking whether the oil product contains water by a water meter (not shown) (for the quality check of the current use tank, the quality check of the standby tank or the quality check of the oil storage tank, the water meter is required to check the water content of the oil product).

Further, the fifth ball valve 661 and the ball valve at the bottom of the outlet of the sampler 13 are opened, and the oil is discharged to the inlet end 22 of the main pipeline 20. Then, it is recovered to the oil recovery unit 40 by the oil pump unit 30 (for example, discharged to the first oil recovery unit 40 a). To ensure the smoothness of the recovery pipeline 60 and the main pipeline 20, before checking this step, it is necessary to confirm whether the connected valve of the oil recovery unit 40 is opened, and details thereof are not repeated.

Further, if the oil quality inspection does not meet the requirements, the fifth ball valve 661 and the ball valve at the bottom of the outlet of the sampler 13 are closed after the above steps are finished. And repeating the steps until the quality inspection of the oil product meets the requirements. And if the oil quality inspection meets the requirements, carrying out the next step.

Further, after the operation is completed, the fifth ball valve 661 is closed and locked (and the fourth ball valve 651 is kept normally open). The first self-return valve 652 is then opened to drain the third recovery line 65. And opens the second self-return valve 671 to drain the fifth recovery line 67. And then closing the first automatic return valve 652, the second automatic return valve 671, the fifth ball valve 661 and the ball valve arranged at the bottom of the outlet of the sampler in sequence.

In oil recovery, the second electromagnetic valve 412 is first controlled to open by the second controller 422, so that the second flow meter 42 starts to meter, in the process, the amount of oil flowing out from the bottom of the oil storage tank 50, which is displayed by the display 114 of the second flow meter 42, is observed, when a preset capacity is reached, the second electromagnetic valve 412 is controlled to close by the second controller 422, so that the second flow meter 42 finishes metering, then the oil in the second flow meter 42, such as containing a small amount or trace amount of moisture impurities, is visually checked, the first ball valve 621 is opened, the oil flows into the inlet end 22 of the main pipeline 20, and is recovered to the oil recovery unit (for example, discharged to the first oil recovery unit 40a) through the oil pump unit 30. And the third ball valve 641 may be opened to discharge the oil at the bottom of the second flow meter 42 to the zero-position tank 45. If a large amount of impurities or moisture is contained, the second ball valve 631 may be opened to discharge the oil to the pool 44 for oil-water separation. So set up, can avoid the waste of oil to discharging into in oil quality different pending pond 44, zero-bit jar 45 and the first oil recovery unit 40 a. Further, the above steps are repeated until the oil in the second flowmeter 42 is visually checked to be free of a large amount of moisture and impurities, and then the second automatic return valve 671 is opened again upstream of the inlet of the sampler 13 to visually check whether the oil contains free water, suspended moisture and solid impurities.

Further, after the operation is completed, the fifth ball valve 661 is first closed and locked (and the fourth ball valve 651 provided downstream of the outlet of the oil tank 50 is kept normally open). The first self-return valve 652 is opened to drain the third recovery line 65. The second self-return valve 671 is opened to drain the fifth recovery line 67. The first 652, second 671, fifth 661 and ball valves located at the bottom of the sampler outlet are then closed, and the first 621, second 631 and third 641 ball valves are also closed.

Further, if it is observed through the first flow meter 11 that the oil in the oil storage tank 50 always contains a large amount of moisture or impurities, the bottom discharge operation of the oil storage tank 50 can be performed. For example, when the bottom discharge operation of the oil storage tank 50 is performed, the oil returning operation of the oil truck or the bottom oil pumping operation of the oil tank cannot be performed at the same time. Or the oil storage tank 50 meets the settling time after oil enters or the oil quality is checked to have more water and impurities all the time through the first flow meter 11, and then the oil tank bottom discharging operation is carried out. Wherein, the settling time after oil collection of the oil storage tank 50 is as follows: the jet fuel has a liquid column of not less than 3 hours per meter, and under special conditions, the jet fuel is allowed to stand for not less than 8 hours in the oil storage tank 50 provided with the float-type oil suction pipe. In some embodiments, the bottom discharge operation of the oil storage tank 50 is to perform bottom discharge on the second oil recovery unit 40b, before the bottom discharge operation, an oil quality check of the recovery tank 41 of the second oil recovery unit 40b is performed, and then an electric valve (not shown) is opened, and then an oil drain line valve of the recovery tank 41 to be bottom discharged is opened, so as to perform bottom discharge to the recovery tank 41 in a self-pressing manner. After the end of the bottom discharge, the electric valve and the dirty oil line valve of the bottom recovery tank 41 are closed, and then the oil quality inspection is performed again on the bottom discharge tank according to the above-described flow. So set up, can effectively carry out classification to the oil of different masses to retrieve and utilize.

The technical solutions disclosed in the embodiments of the present application can complement each other without generating conflicts.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An oil recovery quality inspection system, characterized by comprising:

a main pipeline comprising an outlet end and a plurality of inlet ends;

the inlet of the oil pump unit is connected with the outlet end;

2. The oil recovery quality inspection system of claim 1, comprising a first solenoid valve disposed at an inlet of the first flowmeter, wherein the first solenoid valve is configured to control the opening or closing of the inlet of the first flowmeter.

3. The oil recovery quality testing system of claim 2, comprising a first controller electrically connected to the first solenoid valve and the first flow meter, wherein the first controller is configured to control the first solenoid valve to be turned off to close an inlet of the first flow meter when the oil volume of the first flow meter reaches a preset volume.

4. The oil recovery quality inspection system of claim 1, further comprising a recovery pipeline, wherein the plurality of oil recovery quality inspection units are distributed at intervals on both sides of the main pipeline and are connected to the inlet end through the recovery pipeline.

5. The oil recovery quality inspection system of claim 4, wherein the main pipeline and the recovery pipeline are disposed at the same level.

6. The oil recovery quality inspection system of claim 1, wherein an inlet of the oil pump unit is disposed at a position lower than a position at which the outlet end is disposed.

7. The oil recovery quality inspection system of claim 1, further comprising a buffer pipeline, wherein an inlet of the buffer pipeline is connected to the outlet end, an outlet of the buffer pipeline is connected to an inlet of the oil pump unit, and a position of the inlet of the buffer pipeline is lower than a position of the outlet end.

8. The oil recovery quality testing system of claim 7, wherein the buffer pipeline comprises a first end connected to the outlet end and a second end connected to the inlet of the oil pump unit, and the second end is disposed at a position lower than the first end.

9. The oil recovery quality testing system of claim 1, further comprising a buffer tank disposed at the outlet end, wherein the buffer tank is disposed at a position lower than the main pipeline, and the oil pump unit is disposed in the buffer tank.

10. The oil recovery quality inspection system of claim 1, wherein the oil pump assembly comprises a pump, an inlet valve connected between the inlet and the outlet of the pump, and an outlet valve connected between the outlet of the pump and the inlet of the oil recovery unit.

11. The oil recovery quality inspection system of claim 10, wherein the inlet valve remains normally open; and/or

The outlet valve is not fully open.

12. The oil recovery quality testing system of claim 9, wherein the oil pump unit further comprises an exhaust valve disposed between the outlet of the pump and the outlet valve.

13. The oil recovery quality inspection system of claim 12, wherein the vent valve comprises an automatic vent valve; and/or

The exhaust valve is kept in a normally open state.

14. The oil recovery quality inspection system of claim 1, wherein the oil recovery unit comprises a first oil recovery unit and a second oil recovery unit, the first oil recovery unit and the second oil recovery unit are connected in parallel between the outlet and the inlet of the oil pump unit, and the oil quality of the oil recovered by the first oil recovery unit is higher than the oil quality of the oil recovered by the second oil recovery unit.

15. The oil recovery quality inspection system of claim 4, wherein the oil recovery unit comprises a second flow meter and a recovery tank, an inlet of the recovery tank is connected with an outlet of the oil pump unit, the second flow meter is connected between an outlet and the inlet of the recovery tank, the second flow meter is used for metering the amount of oil at the bottom of the recovery tank, and the recovery tank is used for recovering and storing the oil.

16. The oil recovery quality inspection system of claim 15, comprising a second solenoid valve disposed at an inlet of the second flowmeter, wherein the second solenoid valve is configured to control opening or closing of the inlet of the second flowmeter.

17. The oil recovery quality testing system of claim 16, comprising a second controller electrically connected to the second solenoid valve and the second flow meter, wherein the second controller is configured to control the second solenoid valve to be de-energized to close an inlet of the second flow meter when the oil volume of the second flow meter reaches a preset volume.

18. The oil recovery quality inspection system of claim 15, wherein the recovery pipeline comprises a first recovery pipeline and a second recovery pipeline, the recovery tank is connected to the outlet of the oil pump unit through the first recovery pipeline, and the second flow meter is connected to the inlet end through the second recovery pipeline.

19. The oil recovery quality testing system of claim 18, wherein a first ball valve is disposed on the second recovery pipeline, and the first ball valve is disposed downstream of the outlet of the second flowmeter.

20. The oil recovery quality inspection system of claim 19, wherein the recovery pipeline comprises a third recovery pipeline and a fourth recovery pipeline, the second flow meter is connected to the pool to be treated through the third recovery pipeline, the second flow meter is connected to the zero tank through the fourth recovery pipeline, and the oil quality of the oil stored in the pool to be treated is higher than the oil quality of the oil stored in the zero tank.

21. The oil recovery quality inspection system of claim 20, wherein a second ball valve is disposed on the third recovery pipeline, and the second ball valve is disposed upstream of the inlet of the tank to be treated; and a third ball valve is arranged on the fourth recovery pipeline and is arranged at the upstream of the inlet of the zero-position tank.

22. The oil recovery quality inspection system of claim 21, wherein the first ball valve is disposed at a higher position than the second and third ball valves.

23. The oil recovery quality inspection system of claim 18, wherein a safety liquid level line is provided in the recovery tank, the safety liquid level line not exceeding half the height of the recovery tank; the oil recovery quality inspection system further comprises a plurality of standby tanks and a conveying pipeline, the standby tanks are connected with the recovery tanks through the conveying pipeline, and the conveying pipeline is used for conveying at least part of oil in the recovery tanks to the standby tanks for storage when the oil in the recovery tanks exceeds the safe liquid level line.

24. The oil recovery quality inspection system of claim 4, wherein the recovery pipeline comprises a third recovery pipeline and a fourth recovery pipeline; the first flowmeter is connected to the oil storage tank through the third recovery pipeline, and the first flowmeter is connected to the inlet end through the fourth recovery pipeline.

25. The oil recovery quality testing system of claim 24, wherein the third recovery pipeline and the fourth recovery pipeline are disposed on the same horizontal plane.

26. The oil recovery quality testing system of claim 24, wherein a fourth ball valve and a first automatic return valve are disposed on the third recovery pipeline, the fourth ball valve is disposed downstream of the outlet of the oil storage tank, and the first automatic return valve is disposed upstream of the inlet of the first flowmeter; and a fifth ball valve is arranged on the fourth recovery pipeline and is arranged at the downstream of the outlet of the first flowmeter.

27. The oil recovery quality inspection system of claim 26, wherein the fourth ball valve remains normally open.

28. The oil recovery quality inspection system of claim 24, wherein the recovery pipeline comprises a fifth recovery pipeline and a sixth recovery pipeline; the sampler is connected with the third recovery pipeline through the fifth recovery pipeline, and the sampler is connected with the fourth recovery pipeline through the sixth recovery pipeline.

29. The oil recovery quality testing system of claim 28, wherein the fifth recovery pipeline and the sixth recovery pipeline are disposed on the same horizontal plane.

30. The oil recovery quality inspection system of claim 28, wherein the fifth recovery pipeline and the sixth recovery pipeline are disposed at positions not higher than the third recovery pipeline and the fourth recovery pipeline.

31. The oil recovery quality inspection system of claim 28, wherein a second self-return valve is disposed on the fifth recovery pipeline, and the second self-return valve is disposed upstream of the inlet of the sampler.

32. A aviation oil storage system comprising a plurality of oil storage tanks and an oil recovery quality control system according to any one of claims 1 to 31, wherein the plurality of oil quality control units of the oil recovery quality control system correspond to the plurality of oil storage tanks.