Pre-tank oil quality inspection system

Abstract

The utility model provides a pre-tank oil quality inspection system. Comprising an oil tank, an oil product conveying main path, a first oil outlet branch and a first sampling branch. An oil outlet is formed in the bottom of the oil tank. The oil product conveying main path is provided with a quality inspection barrel and a first main path valve connected with the quality inspection barrel, the upstream of the oil product conveying main path is connected with the oil outlet through the first main path valve, and the quality inspection barrel is located on the downstream of the oil product conveying main path. The first oil outlet branch is provided with a bottom oil pump and a first oil outlet valve connected with the bottom oil pump, the upstream of the first oil outlet branch is connected with the quality inspection barrel through the first oil outlet valve, and the downstream is connected with the outside through the bottom oil pump. The first sampling branch is provided with a first sampling assembly and a first sampling valve connected with the first sampling assembly, the upstream of the first sampling branch is connected with the oil product conveying main path through the first sampling valve, and the first sampling assembly is located at the downstream of the first sampling branch. The system is simple in sampling process, simple in structure and efficient in oil product detection, improves the stability of sampled oil products, efficiently discharges the oil products and improves the detection efficiency.

Description

Technical Field

[0001] The present application relates to the field of inspection devices, and in particular to a pre-tank oil quality inspection system. Background Art

[0002] The pre-tank oil quality inspection system is mainly used to detect the oil quality in the oil tank, so as to ensure the stability of the oil quality and further ensure the service life of the oil tank. In the related technology, the oil detection process is complicated, the operation is inconvenient and the structure is complex, and it is impossible to detect the oil efficiently. Utility Model Content

[0003] The present application provides a pre-tank oil quality inspection system with a simple structure and efficient detection.

[0004] The present application provides a pre-tank oil product quality inspection system, comprising:

[0005] An oil tank is used to load oil products, and an oil outlet is provided at the bottom of the oil tank;

[0006] The main oil transmission path is provided with a quality inspection barrel and a first main path valve connected to the quality inspection barrel, the upstream of the main oil transmission path is connected to the oil outlet through the first main path valve, and the quality inspection barrel is located downstream of the main oil transmission path;

[0007] A first oil outlet branch is provided with a bottom oil pump and a first oil outlet valve connected to the bottom oil pump, wherein the upstream of the first oil outlet branch is connected to the quality inspection barrel through the first oil outlet valve, and the downstream of the first oil outlet branch is connected to the outside through the bottom oil pump;

[0008] The first sampling branch is provided with a first sampling component and a first sampling valve connected to the first sampling component. The upstream of the first sampling branch is connected to the oil product transmission main line through the first sampling valve, and the first sampling component is located downstream of the first sampling branch.

[0009] Optionally, it further comprises a second sampling branch, wherein the second sampling branch is provided with a second sampling assembly and a second sampling valve connected to the second sampling assembly, the upstream of the second sampling branch is connected to the inner wall of the oil tank through the second sampling assembly, and the downstream of the second sampling branch is connected to the outside through the second sampling valve;

[0010] The second sampling component includes at least one valve component arranged in parallel with the second sampling branch, and the valve component is connected to the point of the floating liquid level height of the oil tank; when there are multiple valve components, the multiple valve components are arranged in sequence according to the set positions along the liquid level height direction in the oil tank.

[0011] Optionally, the interior of the oil tank includes a floating structure, and the second sampling assembly includes a first valve assembly, a second valve assembly and at least one third valve assembly, the first valve assembly is connected to a high point of the floating structure, the second valve assembly is connected to a low point of the floating structure, and the third valve assembly is connected to a midpoint of the inner wall of the floating structure.

[0012] Optionally, it also includes a second sampling recovery branch, which is provided with a second recovery valve, the upstream of the second sampling recovery branch is connected between the second sampling component and the second sampling valve, and the downstream of the second sampling recovery branch is connected between the first main valve and the quality inspection barrel.

[0013] Optionally, the first valve assembly includes a first switch valve connected to the oil tank and a second switch valve connected downstream of the first switch valve, the first switch valve is a flat gate valve, and the second switch valve is a ball valve.

[0014] Optionally, the second valve assembly includes a third switch valve connected to the oil tank and a fourth switch valve connected downstream of the third switch valve, the third switch valve is a flat gate valve, and the fourth switch valve is a ball valve.

[0015] Optionally, the third valve assembly includes a fifth switch valve connected to the oil tank and a sixth switch valve connected downstream of the fifth switch valve, the fifth switch valve is a flat gate valve, and the sixth switch valve is a ball valve.

[0016] Optionally, it also includes a first sampling recovery branch, which is provided with a first recovery valve, the upstream of the first sampling recovery branch is connected to the outlet of the first sampling component, and the downstream of the first sampling recovery branch is connected between the outlet of the quality inspection barrel and the first oil outlet valve; or, the downstream of the first sampling recovery branch is connected to the inlet of the quality inspection barrel.

[0017] Optionally, it also includes an oil recovery branch, the oil recovery branch is provided with at least one oil recovery valve, the first oil outlet branch is provided with an oil drain valve, and the oil drain valve is located between the bottom oil pump and the outside, the oil transmission main line is provided with a second main line valve, and the second main line valve is located between the first main line valve and the quality inspection barrel, the upstream of the oil recovery branch is connected between the bottom oil pump and the oil drain valve, and the downstream of the oil recovery branch is connected between the first main line valve and the second main line valve.

[0018] Optionally, one of the oil recovery valves is arranged close to the main oil transmission line.

[0019] Optionally, one of the oil recovery valves is arranged close to the first oil outlet branch.

[0020] Optionally, the oil recovery valve is a ball valve.

[0021] Optionally, it also includes a second oil outlet branch, the second oil outlet branch is provided with a second oil outlet valve, the third main valve is provided between the first main valve of the oil transmission main line and the quality inspection barrel, the upstream of the second oil outlet branch is connected between the first main valve and the third main valve, and the downstream of the second oil outlet branch is connected between the first oil outlet valve and the bottom oil pump.

[0022] Optionally, the third main valve and the first sampling valve are vertically distributed on a horizontal plane.

[0023] Optionally, the third main valve and the first sampling valve are distributed in parallel on a horizontal plane, and the third main valve and the first sampling valve are arranged close to each other.

[0024] Optionally, the third main valve and the first sampling valve are parallel and relatively distributed on a horizontal plane.

[0025] Optionally, the third main valve is a spring return valve.

[0026] Optionally, the second oil outlet valve is a ball valve.

[0027] Optionally, the first sampling valve is a spring return valve.

[0028] Optionally, it also includes a third oil outlet branch, which is provided with a third oil outlet valve. The upstream of the third oil outlet branch is connected between the outlet of the quality inspection barrel and the first oil outlet valve, and the downstream of the third oil outlet branch is used to connect to the outside.

[0029] Optionally, the third oil outlet branch is arranged close to the outlet of the quality inspection barrel.

[0030] Optionally, the third oil outlet valve is a spring return valve.

[0031] Optionally, the first oil outlet branch is provided with a peephole, and the peephole is arranged between the outlet of the quality inspection barrel and the first oil outlet valve.

[0032] Optionally, the first oil outlet branch is provided with a first one-way valve, the inlet of the first one-way valve is connected to the first oil outlet valve, and the outlet of the first one-way valve is connected to the bottom oil pump.

[0033] Optionally, the first oil outlet branch is provided with a filter, and the filter is arranged between the first oil outlet valve and the bottom oil pump.

[0034] Optionally, the first oil outlet branch is provided with a first pressure gauge, and the first pressure gauge is arranged between the first oil outlet valve and the bottom oil pump.

[0035] Optionally, the first oil outlet branch is provided with a second pressure gauge, and the second pressure gauge is arranged between the bottom oil pump and the outside.

[0036] Optionally, the first oil outlet branch is provided with a second one-way valve, and the second one-way valve is provided between the bottom oil pump and the outside.

[0037] Optionally, the quality inspection barrel includes at least one window and a barrel body, the window is arranged on the side wall of the barrel body, and the window faces the first sampling component.

[0038] Optionally, the quality inspection barrel includes at least one viewing window and a barrel body, wherein the viewing window is arranged on a side wall of the barrel body, and the viewing window faces the oil tank and the bottom oil pump.

[0039] Optionally, the quality inspection barrel includes a top cover, a barrel body and a pressing handle, the top cover is assembled to the barrel body, the pressing handle is assembled to the barrel body and close to the side wall of the barrel body, and the pressing handle is used to open or close the top cover.

[0040] Optionally, the quality inspection barrel includes a barrel body and a barrel bracket, wherein the barrel bracket is disposed at the bottom of the barrel body for supporting the barrel body, and the height of the barrel bracket from the ground is 0.4-0.9m.

[0041] Optionally, the pre-tank oil quality inspection system includes an operating column and a pressing piece arranged on the operating column, the operating column is arranged on a side close to the bottom oil pump and the quality inspection barrel, and is assembled on the ground, and the pressing piece is used to operate the bottom oil pump to open or close.

[0042] Optionally, the first main valve is a flat gate valve.

[0043] Optionally, the first oil outlet valve is a ball valve.

[0044] The pre-tank oil quality inspection system provided by the present application realizes that the oil can be transmitted from the first main valve and the quality inspection barrel set on the oil transmission main road to the first oil outlet valve and the bottom oil pump set on the first oil outlet branch road, and then during the oil circulation process, sampling is performed through the first sampling valve on the first sampling branch road. Such a configuration makes the entire sampling process simple, the entire structure is simpler, and the oil detection is more efficient. The quality inspection barrel set on the oil transmission main road can place the oil during the oil detection process, assist the first sampling valve on the first sampling branch road to perform sampling, and improve the stability of the sampled oil. The bottom oil pump is provided, which can more efficiently discharge the oil to the downstream of the bottom oil pump, further improving the efficiency of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0046] Figure 1 Shown is a schematic diagram of an embodiment of a pre-tank oil quality inspection system of the present application.

[0047] Figure 2 Shown is a schematic diagram of another embodiment of the pre-tank oil quality inspection system of the present application.

[0048] Figure 3 Shown is a schematic diagram of another embodiment of the pre-tank oil quality inspection system of the present application.

[0049] Figure 4 Shown is a schematic structural diagram of an embodiment of a pre-tank oil quality inspection system of the present application.

[0050] Description of reference numerals:

[0051] Pre-tank oil quality inspection system 100; operating column 200; pressing part 300; oil tank 1; floating structure 11; floating part 111; oil delivery arm 112; high point 113; midpoint 114; low point 115; connecting pipeline 116; water collecting tank 117; supporting part 118; hose 119; oil product transmission main route 2; quality inspection barrel 21; window 211; barrel body 212; top cover 213; pressing handle 214; barrel bracket 215; first main route valve 22; second main route valve 23; third main route valve 24; first oil outlet branch 3; bottom oil pump 31; first oil outlet valve 32; sight glass 33; first one-way valve 34; filter 35; first pressure gauge 36; second pressure gauge 37; second one-way Valve 38; oil drain valve 39; first sampling branch 4; first sampling assembly 41; first sampling valve 42; first sampling recovery branch 5; first recovery valve 51; second sampling branch 6; second sampling assembly 61; valve assembly 610; first valve assembly 611; second valve assembly 612; third valve assembly 613; first switch valve 614; second switch valve 615; third switch valve 616; fourth switch valve 617; fifth switch valve 618; sixth switch valve 619; second sampling valve 62; second sampling recovery branch 7; second recovery valve 71; oil recovery branch 8; oil recovery valve 81; second oil outlet branch 90; second oil outlet valve 901; third oil outlet branch 91; third oil outlet valve 911. DETAILED DESCRIPTION

[0052] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0053] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "one" or "one" and the like used in this application specification and claims do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" includes two, which is equivalent to at least two. "Including" or "including" and the like mean that the elements or objects appearing in front of "including" or "including" include the elements or objects listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms of "one", "said" and "the" used in this application specification and the attached claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0054] The present application provides a pre-tank oil quality inspection system, including an oil tank, an oil product transmission main line, a first oil outlet branch and a first sampling branch. The oil tank is used to load oil products, and an oil outlet is provided at the bottom of the oil tank. The oil product transmission main line is provided with a quality inspection barrel and a first main line valve connected to the quality inspection barrel, the upstream of the oil product transmission main line is connected to the oil outlet through the first main line valve, and the quality inspection barrel is located downstream of the oil product transmission main line. The first oil outlet branch is provided with a bottom oil pump and a first oil outlet valve connected to the bottom oil pump, the upstream of the first oil outlet branch is connected to the quality inspection barrel through the first oil outlet valve, and the downstream of the first oil outlet branch is connected to the outside through the bottom oil pump. The first sampling branch is provided with a first sampling assembly and a first sampling valve connected to the first sampling assembly, the upstream of the first sampling branch is connected to the oil product transmission main line through the first sampling valve, and the first sampling assembly is located downstream of the first sampling branch. The pre-tank oil quality inspection system provided by the present application, through the oil transmission main road and the first oil outlet branch, can realize that the oil can be transmitted from the first main road valve and the quality inspection barrel set on the oil transmission main road to the first oil outlet valve and the bottom oil pump set on the first oil outlet branch, and then during the oil circulation process, sampling is performed through the first sampling valve on the first sampling branch. Such a configuration makes the entire sampling process simple, and the entire structure is simpler, and the detection of oil products is more efficient. The quality inspection barrel set on the oil transmission main road can place oil products during the oil product detection process, assist the first sampling valve on the first sampling branch to perform sampling, and improve the stability of the sampled oil products. The bottom oil pump is provided, which can more efficiently discharge oil products to the downstream of the bottom oil pump, further improving the efficiency of detection.

[0055] The present application provides a pre-tank oil quality inspection system. The pre-tank oil quality inspection system of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0056] Figure 1 Shown is a schematic diagram of an embodiment of a pre-tank oil quality inspection system 100 of the present application. Figure 2 Shown is a schematic diagram of another embodiment of the pre-tank oil quality inspection system 100 of the present application. Figure 3 Shown is a schematic diagram of another embodiment of the pre-tank oil quality inspection system 100 of the present application. Figure 4 Shown is a schematic structural diagram of an embodiment of a pre-tank oil quality inspection system 100 of the present application.

[0057] exist Figure 1In the illustrated embodiment, the pre-tank oil quality inspection system 100 includes an oil tank 1, an oil product transmission main line 2, a first oil outlet branch line 3 and a first sampling branch line 4. The oil tank 1 is used to load oil products, and an oil outlet is provided at the bottom of the oil tank 1. The oil product transmission main line 2 is used to feed oil into the quality inspection barrel 21, the first oil outlet branch line 3 is used to transmit the oil products that have passed through the quality inspection barrel 21, and the first sampling branch line 4 is used to detect the oil products that have passed through the oil product transmission main line 2. The oil product transmission main line 2 is provided with a quality inspection barrel 21 and a first main line valve 22 connected to the quality inspection barrel 21. The first main line valve 22 is used to open or close the oil product transmission main line 2 to connect or disconnect with the downstream (the side close to the quality inspection barrel 21). The upstream of the oil product transmission main line 2 is connected to the oil outlet through the first main line valve 22, and the quality inspection barrel 21 is located downstream of the oil product transmission main line 2. The first oil outlet branch line 3 is provided with a bottom oil pump 31 and a first oil outlet valve 32 connected to the bottom oil pump 31. The bottom oil pump 31 is used to discharge the oil from the first oil outlet branch 3. The first oil outlet valve 32 is used to open or close the first oil outlet branch 3 to connect or disconnect with the downstream (the side close to the bottom oil pump 31). The upstream of the first oil outlet branch 3 is connected to the quality inspection barrel 21 through the first oil outlet valve 32, and the downstream of the first oil outlet branch 3 is connected to the outside through the bottom oil pump 31. The first sampling branch 4 is provided with a first sampling component 41 and a first sampling valve 42 connected to the first sampling component 41. The first sampling component 41 can be a closed-circuit sampler for sampling oil. The first sampling valve 42 is used to open or close the first sampling branch 4 to connect or disconnect with the downstream (the side close to the first sampling component 41). The upstream of the first sampling branch 4 is connected to the oil product transmission main road 2 through the first sampling valve 42, and the first sampling component 41 is located downstream of the first sampling branch 4. With such arrangement, through the oil product transmission main road 2 and the first oil outlet branch 3, the oil product can be transmitted from the first main road valve 22 and the quality inspection barrel 21 set on the oil product transmission main road 2 to the first oil outlet valve 32 and the bottom oil pump 31 set on the first oil outlet branch 3, and then during the oil product circulation process, sampling is performed through the first sampling valve 42 on the first sampling branch 4. With such arrangement, the entire sampling process is simple, the entire structure is simpler, and the oil product detection is more efficient. The quality inspection barrel 21 set on the oil product transmission main road 2 can place the oil product in the pipe that is discharged in advance during the oil product detection process, and assist the first sampling valve 42 on the first sampling branch 4 to perform sampling, so as to ensure that the sample obtained is the oil product in the oil tank, and improve the stability of the sampled oil product. The bottom oil pump 31 is set, so that the oil product can be discharged to the downstream of the bottom oil pump 31 more efficiently, further improving the efficiency of detection. In this embodiment, the outlet of the oil tank 1 is connected to the inlet of the first main valve 22, the outlet of the first main valve 22 is connected to the inlet of the quality inspection barrel 21, the outlet of the quality inspection barrel 21 is connected to the inlet of the first oil outlet valve 32, the outlet of the first oil outlet valve 32 is connected to the inlet of the bottom oil pump 31, and the outlet of the bottom oil pump 31 is connected to the outside.The inlet of the first sampling valve 42 is connected between the outlet of the first main valve 22 and the inlet of the quality inspection barrel 21, and the outlet of the first sampling valve 42 is connected to the first sampling assembly 41. The pre-tank oil quality inspection system 100 also includes a first sampling recovery branch 5. The first sampling recovery branch 5 is used to recover unused oil in the first sampling assembly 41. The first sampling recovery branch 5 is provided with a first recovery valve 51. The first recovery valve 51 is used to open or close the first sampling recovery branch 5 to connect or disconnect with the downstream (the side close to the oil transmission main line 2). In. Figure 1 In the embodiment shown, the upstream of the first sampling recovery branch 5 is connected to the outlet of the first sampling assembly 41, and the downstream of the first sampling recovery branch 5 is connected between the outlet of the quality inspection barrel 21 and the first oil outlet valve 32. The oil recovered by the first sampling recovery branch 5 can be discharged through the first oil outlet branch 3. Figure 2 In the illustrated embodiment, the downstream of the first sampling recovery branch 5 is connected to the inlet of the quality inspection barrel 21. The downstream of the first sampling recovery branch 5 is closer to the inlet of the quality inspection barrel 21 than the upstream of the first sampling recovery branch 5.

[0058] exist Figure 1 and Figure 2In the illustrated embodiment, the first oil outlet branch 3 is provided with a sight glass 33. The sight glass 33 is used to check the oil in the first oil outlet branch 3, and can check whether the oil is discharged through the first oil outlet branch 3. The sight glass 33 is arranged between the outlet of the quality inspection barrel 21 and the first oil outlet valve 32. The sight glass 33 can also be arranged at other positions of the first oil outlet branch 3. The first oil outlet branch 3 is provided with a first check valve 34, the inlet of the first check valve 34 is connected to the first oil outlet valve 32, and the outlet of the first check valve 34 is connected to the bottom oil pump 31. The first check valve 34 is used to ensure that the oil is transmitted from the quality inspection barrel 21 to the bottom oil pump 31 to prevent the oil from flowing back. The first oil outlet branch 3 is provided with a filter 35, and the filter 35 is arranged between the first oil outlet valve 32 and the bottom oil pump 31. The filter 35 is used to filter impurities of the oil on the first oil outlet branch 3. The filter 35 can be a Y-type coarse filter or a T-type coarse filter. The first oil outlet branch 3 is provided with a first pressure gauge 36, which is arranged between the first oil outlet valve 32 and the bottom oil pump 31. The first pressure gauge 36 is used to detect the pressure between the first oil outlet valve 32 and the bottom oil pump 31 to ensure the stability of the system. The first oil outlet branch 3 is provided with a second pressure gauge 37, which is arranged between the bottom oil pump 31 and the outside. The first pressure gauge 36 is used to detect the pressure between the bottom oil pump 31 and the outside to ensure the stability of the system. In combination with the first pressure gauge 36 and the second pressure gauge 37, the pressure difference on both sides of the bottom oil pump 31 can also be detected to further ensure the safety of the bottom oil pump 31 and the stability of the entire system. The first oil outlet branch 3 is provided with a second one-way valve 38, which is arranged between the bottom oil pump 31 and the outside. The second one-way valve 38 is used to ensure that the oil is transmitted from the bottom oil pump 31 to the outside to prevent the oil from flowing back. The pre-tank oil quality inspection system 100 includes an operating column 200 and a pressing member 300 arranged on the operating column 200. The operating column 200 is used to assemble and place the pressing piece 300. The operating column 200 is arranged on a side close to the bottom oil pump 31 and the quality inspection barrel 21, and is assembled on the ground. The pressing piece 300 is used to operate the bottom oil pump 31 to open or close. This arrangement makes it convenient to operate the pressing piece 300 to open or close the bottom oil pump 31 after observing the bottom oil pump 31 and the quality inspection barrel 21. The first main line valve 22 is a flat gate valve. The flat gate valve can quickly realize switching in the pipeline. In this embodiment, the first main line valve 22 is the closest valve to the oil tank 1 through the oil product transmission main line 2. Therefore, when the oil product flows out of the oil tank 1, the use of a flat gate valve can realize rapid switching and is more secure. The first oil outlet valve 32 is a ball valve. The ball valve has a simple structure and good sealing performance, which can improve the sealing performance of the entire system.

[0059] exist Figures 1 to 4In the illustrated embodiment, the inspection barrel 21 includes at least one window 211 and a barrel body 212. The window 211 is used to observe the amount of oil stored in the barrel body 21. The window 211 is arranged on the side wall of the barrel body 212, and the window 211 faces the first sampling assembly 41. In this way, when the window 211 faces the first sampling assembly 41, the amount of oil stored in the inspection barrel 21 can be observed through the window 211 during the sampling process, which is convenient for sampling. Figure 1 As shown, the window 211 is arranged on the side wall of the barrel body 212, and the window 211 faces the oil tank 1 and the bottom oil pump 31. In this way, when the window 211 faces the oil tank 1, the storage amount of the oil product in the quality inspection barrel 21 can be observed through the window 211 during the sampling process, which is convenient for closing or opening the oil product transmission main path 2. When the window 211 faces the oil tank 1, the storage amount of the oil product in the quality inspection barrel 21 can be observed through the window 211 during the sampling process, which is convenient for closing or opening the first oil outlet branch 3. Figure 2 In the embodiment shown, the viewing window 211 is provided on the side wall of the barrel body 212, and the viewing window 211 faces the first sampling assembly 41 and the first oil outlet valve 32. This arrangement facilitates observation during sampling and oil outlet, and facilitates opening or closing of the first oil outlet valve 32. Figure 3 In the embodiment shown, the viewing window 211 is provided on the side wall of the barrel body 212, and the viewing window 211 faces the first oil outlet valve 32. This arrangement facilitates observation during oil outlet and facilitates opening or closing of the first oil outlet valve 32. Figure 4 In the illustrated embodiment, the quality inspection bucket 21 includes a top cover 213 and a pressing handle 214. The top cover 213 is provided to facilitate cleaning or cleaning of the quality inspection bucket 21. The top cover 213 of the quality inspection bucket 21 can be opened or closed by pressing the handle 214. The top cover 213 is assembled to the bucket body 212, and the pressing handle 214 is assembled to the bucket body 212 and is close to the side wall of the bucket body 212. The pressing handle 214 is used to open or close the top cover 213. The pressing handle 214 is close to the side wall of the bucket body 212 to facilitate the opening or closing of the pressing handle 214. The quality inspection bucket 21 includes a bucket bracket 215, which is provided at the bottom of the bucket body 212 for supporting the bucket body 212. The bucket bracket 215 is used to fix the bucket body 212, so that the bucket body 212 is more stable. The height of the bucket bracket 215 from the ground is 0.4-0.9m. This arrangement facilitates the cleaning or observation of the quality inspection bucket 21.

[0060] exist Figure 1In the illustrated embodiment, the pre-tank oil product quality inspection system 100 also includes a second sampling branch 6, which is provided with a second sampling assembly 61 and a second sampling valve 62 connected to the second sampling assembly 61. The upstream of the second sampling branch 6 is connected to the inner wall of the oil tank 1 through the second sampling assembly 61, and the downstream of the second sampling branch 6 is connected to the outside through the second sampling valve 62. The second sampling valve 62 is used to open or close the second sampling branch 6 to connect or disconnect with the downstream (the side close to the outside). The second sampling branch 6 is connected to the oil product by setting a small barrel outside for sampling and testing. The second sampling assembly 61 includes at least one valve assembly 610 arranged in parallel with the second sampling branch 6, and the valve assembly 610 is connected to the point of the floating liquid level height of the oil tank 1. In this embodiment, three valve assemblies are provided, and four, five, etc. can also be provided, and the number is not limited to this. When three valve assemblies are provided, it is generally referred to as three-point sampling.

[0061] exist Figure 1 and Figure 4 In the illustrated embodiment, when there are multiple valve assemblies 610, the multiple valve assemblies 610 are sequentially arranged at set positions along the liquid level height direction in the oil tank 1. The interior of the oil tank 1 includes a floating structure 11. The floating structure 11 can float on the oil in the oil tank 1. The second sampling assembly 61 includes a first valve assembly 611, a second valve assembly 612 and at least one third valve assembly 613, the first valve assembly 611 is connected to the high point 113 of the floating structure 11, the second valve assembly 612 is connected to the low point 115 of the floating structure 11, and the third valve assembly 613 is connected to the middle point 114 of the inner wall of the floating structure 11. The floating structure 11 includes a floating member 111 and an oil delivery arm 112 assembled on the floating member 111, the oil delivery arm 112 extends into the oil, the high point 113, the low point 115 and the middle point 114 are all arranged on the oil delivery arm 112, so that the entire oil delivery arm 112 can float up and down following the floating member 111. The first valve assembly 611 is connected to the high point 113 of the oil delivery arm 112 through a hose 119, the second valve assembly 612 is connected to the midpoint 114 of the oil delivery arm 112 through a hose 119, and at least one third valve assembly 613 is connected to the low point 115 of the oil delivery arm 112 through a hose 119. The first main valve 22 is connected to the tank bottom inside the oil tank 1 through a connecting pipe 116 from the oil outlet. The tank bottom inside the oil tank 1 is provided with a water collecting tank 117. The connecting pipe 116 leads to the water collecting tank 117 at the tank bottom inside the oil tank 1. A plurality of support members 118 are also assembled inside the tank bottom. Each support member 118 is arranged at intervals on the tank bottom and is arranged at the bottom of the connecting pipe 116 to support the connecting pipe 116.

[0062] Look back Figure 1In the embodiment shown, the first valve assembly 611 includes a first switch valve 614 connected to the oil tank 1 and a second switch valve 615 connected to the downstream of the first switch valve 614. The first switch valve 614 is a flat gate valve, and the second switch valve 615 is a ball valve. The flat gate valve can quickly realize switching in the pipeline. In this embodiment, the first switch valve 614 is the valve closest to the oil tank 1 when the oil product passes through the first valve assembly 611. Therefore, when the oil product flows out of the oil tank 1, the use of the flat gate valve can realize rapid switching and is more secure. The second switch valve 615 is a ball valve, which has a simple structure and good sealing performance, and can improve the sealing performance of the entire system. Two valves are set to further increase its sealing performance and safety. The second valve assembly 612 includes a third switch valve 616 connected to the oil tank 1 and a fourth switch valve 617 connected to the downstream of the third switch valve 616. The third switch valve 616 is a flat gate valve, and the fourth switch valve 617 is a ball valve. The flat gate valve can quickly realize switching in the pipeline. In this embodiment, the third switch valve 616 is the valve closest to the oil tank 1 when the oil passes through the second valve assembly 612. Therefore, when the oil flows out of the oil tank 1, the flat gate valve can be used to realize rapid switching and is more secure. The fourth switch valve 617 is a ball valve, which has a simple structure and good sealing performance, and can improve the sealing performance of the entire system. Two valves are set to further increase its sealing performance and safety. The third valve assembly 613 includes a fifth switch valve 618 connected to the oil tank 1 and a sixth switch valve 619 connected to the downstream of the fifth switch valve 618. The fifth switch valve 618 is a flat gate valve, and the sixth switch valve 619 is a ball valve. The flat gate valve can quickly realize switching in the pipeline. In this embodiment, the fifth switch valve 618 is the valve closest to the oil tank 1 when the oil passes through the third valve assembly 613. Therefore, when the oil flows out of the oil tank 1, the flat gate valve can be used to realize rapid switching and is more secure. The sixth switch valve 619 is a ball valve, which has a simple structure and good sealing performance, and can improve the sealing performance of the entire system. Two valves are set to further increase its sealing performance and safety. In this embodiment, the first switch valve 614, the third switch valve 616 and the fifth switch valve 618 are valves close to the oil tank 1, which are in a normally open state and need to be closed in an emergency. The second switch valve 615, the fourth switch valve 617, and the sixth switch valve 619 are operating valves. Open when in use and close when not in use. Such a setting is convenient for daily use, and can be opened or closed. When the second switch valve 615, the fourth switch valve 617, and the sixth switch valve 619 are damaged, etc., they can be used. The first switch valve 614, the third switch valve 616 and the fifth switch valve 618 are closed to ensure that they can face the emergency situation in time and ensure the safety of the oil tank 1. The pre-tank oil quality inspection system 100 also includes a second sampling recovery branch 7. The second sampling recovery branch 7 is provided with a second recovery valve 71. The second recovery valve 71 is used to open or close the second sampling recovery branch 7 to connect or disconnect with the downstream (the side close to the oil product transmission main path 2).The upstream of the second sampling recovery branch 7 is connected between the second sampling assembly 61 and the second sampling valve 62, and the downstream of the second sampling recovery branch 7 is connected between the first main valve 22 and the quality inspection barrel 21. The second sampling recovery branch 7 is set to facilitate the oil in the pipe to be recovered into the quality inspection barrel 21 through the second sampling recovery branch 7, without the need to be connected to the small bucket of the second sampling branch 6 and poured into the quality inspection barrel 21. In this embodiment, the oil tank 1 is connected to the inlet of the first switch valve 614 of the first valve assembly 611, and the outlet of the first switch valve 614 is connected to the inlet of the second switch valve 615; at the same time, the oil tank 1 is also connected to the inlet of the third switch valve 616 of the second valve assembly 612, and the outlet of the third switch valve 616 is connected to the inlet of the fourth switch valve 617; at the same time, the oil tank 1 is also connected to the inlet of the fifth switch valve 618 of the third valve assembly 613, and the outlet of the fifth switch valve 618 is connected to the inlet of the sixth switch valve 619. The outlet of the second switch valve 615, the outlet of the fourth switch valve 617, and the outlet of the sixth switch valve 619 are connected in parallel between the inlet of the second recovery valve 71 and the inlet of the second sampling valve 62. The outlet of the second recovery valve 71 is connected between the outlet of the first main valve 22 and the inlet of the quality inspection barrel 21. In this embodiment, the outlet of the second recovery valve 71 is connected between the inlet of the first sampling branch 4 and the inlet of the quality inspection barrel 21.

[0063] The outlet of the second sampling valve 62 is connected to the outside.

[0064] exist Figure 1In the illustrated embodiment, the first oil outlet branch 3 is provided with an oil drain valve 39, and the oil drain valve 39 is located between the bottom oil pump 31 and the outside. The oil drain valve 39 is used to open or close the first oil outlet branch 3 to connect or disconnect with the downstream (the side close to the outside). The pre-tank oil quality inspection system 100 also includes an oil recovery branch 8. The oil recovery branch 8 is used to recover the good oil in the quality inspection barrel 21. The oil recovery branch 8 is provided with at least one oil recovery valve 81. The oil recovery valve 81 is used to open or close the oil recovery branch 8 to connect or disconnect with the downstream (the side close to the oil transmission main road 2). In the present embodiment, two oil recovery valves are provided, and one, three, etc. can also be provided, and the number is not limited to this. The oil transmission main road 2 is provided with a second main road valve 23, and the second main road valve 23 is located between the first main road valve 22 and the quality inspection barrel 21. The second main valve 23 is used to open so that the oil can flow normally from the oil transmission main road 2 into the quality inspection barrel 21, and to close so that the oil on the oil recovery branch 8 can flow back to the oil tank 1 through the first main valve 22 to prevent the oil from flowing into the quality inspection barrel 21 through the oil transmission main road 2. The upstream of the oil recovery branch 8 is connected between the bottom oil pump 31 and the oil drain valve 39, and the downstream of the oil recovery branch 8 is connected between the first main valve 22 and the second main valve 23. In this way, it can ensure that the waste of good quality oil is reduced, and it is more environmentally friendly and cost-saving. One of the oil recovery valves 81 is set close to the oil transmission main road 2. In this way, when there is oil in the oil transmission main road 2 that needs to be transmitted to the quality inspection barrel 21, it can prevent excessive leakage of oil to the oil recovery branch 8, ensure that the sampling process is reduced. Waste, and ensure that the oil recovery branch 8 is recycled without mixed oil of poor quality. One of the oil recovery valves 81 is set close to the first oil outlet branch 3. With such a configuration, when the oil of poor quality is transmitted to the outside through the first oil outlet branch 3 as unused oil, excessive leakage of oil to the oil recovery branch 8 is prevented. Furthermore, when the oil of good quality needs to be recovered through the oil recovery branch 8, the mixing of the oil of poor quality is prevented. In this embodiment, the inlet of the oil recovery valve 81 of the oil recovery branch 8 is connected between the outlet of the second one-way valve 38 of the first oil outlet branch 3 and the inlet of the oil drain valve 39, and the outlet of the oil recovery valve 81 is connected between the outlet of the first main valve 22 and the inlet of the second main valve 23. The oil recovery valve 81 is a ball valve. The ball valve has a simple structure and good sealing performance, and can improve the sealing performance of the entire system.

[0065] exist Figure 1In the illustrated embodiment, the pre-tank oil quality inspection system 100 further includes a second oil outlet branch 90, and the second oil outlet branch 90 is provided with a second oil outlet valve 901. The second oil outlet valve 901 is used to open or close the second oil outlet branch 90 to connect or disconnect with the downstream (the side close to the oil transmission main road 2). A third main road valve 24 is provided between the first main road valve 22 of the oil transmission main road 2 and the quality inspection barrel 21. The third main road valve 24 is used to open so that the oil can flow normally from the oil transmission main road 2 into the quality inspection barrel 21, and to close so that the oil on the oil transmission main road 2 can flow to the bottom oil pump 31 and the outside through the second oil outlet branch 90, so as to prevent the oil from flowing into the quality inspection barrel 21 through the oil transmission main road 2. In this embodiment, the first main road valve 22, the second main road valve 23 and the third main road valve 24 are connected in sequence on the oil transmission main road 2. The upstream of the second oil outlet branch 90 is connected between the first main valve 22 and the third main valve 24, and the downstream of the second oil outlet branch 90 is connected between the first oil outlet valve 32 and the bottom oil pump 31. In this way, when there are a lot of poor quality oil products in the oil tank 1, the third main valve 24 is closed, so that the oil products directly pass through the second oil outlet branch 90, enter the first oil outlet branch 3, and are discharged to the outside through the bottom oil pump 31. In this embodiment, the inlet of the second oil outlet valve 901 of the second oil outlet branch 90 is connected between the outlet of the second main valve 23 and the outlet of the third main valve 24, and the outlet of the second oil outlet valve 901 is connected between the outlet of the first oil outlet valve 32 and the inlet of the bottom oil pump 31. The third main valve 24 and the first sampling valve 42 are vertically distributed on the horizontal plane. In this way, it is convenient to operate the third main valve 24 and the first sampling valve 42 at the same time, and the layout of the entire system is more reasonable. The third main valve 24 and the first sampling valve 42 are arranged in parallel on the horizontal plane, and the third main valve 24 and the first sampling valve 42 are arranged close to each other. This arrangement facilitates the simultaneous operation of the third main valve 24 and the first sampling valve 42. The third main valve 24 and the first sampling valve 42 are arranged in parallel and relatively to each other on the horizontal plane. The third main valve 24 is a spring return valve. This arrangement facilitates the simultaneous operation of the third main valve 24 and the first sampling valve 42, and facilitates the observation of the first sampling assembly 41 and the quality inspection barrel 21. The second oil outlet valve 901 is a ball valve. The ball valve has a simple structure and good sealing performance, and can improve the sealing performance of the entire system. The first sampling valve 42 is a spring return valve.

[0066] exist Figure 1In the illustrated embodiment, the pre-tank oil product quality inspection system 100 further includes a third oil outlet branch 91, and the third oil outlet branch 91 is provided with a third oil outlet valve 911. The upstream of the third oil outlet branch 91 is connected between the outlet of the quality inspection barrel 21 and the first oil outlet valve 32, and the downstream of the third oil outlet branch 91 is used to connect to the outside. The third oil outlet valve 911 is used to open or close the third oil outlet branch 91 to connect or disconnect with the downstream (the side close to the outside). The third oil outlet branch 91 is arranged near the outlet of the quality inspection barrel 21. In this arrangement, the oil near the quality inspection barrel 21 on the first oil outlet branch 3 can be exhausted through the third oil outlet branch 91. In this embodiment, the inlet of the third oil outlet valve 911 of the third oil outlet branch 91 is connected between the outlet of the quality inspection barrel 21 and the inlet of the first oil outlet valve 32, and the outlet of the third oil outlet valve 911 is connected to the outside. The third oil outlet valve 911 is a spring return valve.

[0067] by Figure 1 For example, when performing routine testing and sampling, first open the first main valve 22, the second main valve 23, and the third main valve 24, and the oil flows into the oil transmission main line 2, and then flows from the oil tank 1 to the first main valve 22, the second main valve 23, and the third main valve 24, and then flows to the quality inspection barrel 21. When the oil is stable, open the first sampling valve 42, and part of the oil flows to the first sampling branch 4, and flows into the first sampling component 41, and the first sampling component 41 samples the oil. After sampling, open the first recovery valve 51, and the oil is discharged through the first sampling recovery branch 5 through the first oil outlet branch 3 or flows into the quality inspection barrel 21 through the oil transmission main line 2. When the oil in the quality inspection barrel 21 needs to be discharged, the first oil outlet valve 32 is opened, and the oil flows into the first oil outlet branch 3 through the quality inspection barrel 21, and flows to the sight glass 33, the first oil outlet valve 32, the filter 35, the first pressure gauge 36, the bottom oil pump 31, the second pressure gauge 37, the second one-way valve 38 and the oil drain valve 39 in sequence, and then flows to the outside to discharge the unused oil. When the quality of the oil is good, the oil recovery valve 81 is opened, and the second main valve 23 is closed. The oil flows into at least one oil recovery valve 81 through the recovery branch, and then flows into the first main valve 22 of the oil transmission main road 2, and is recovered in the oil tank 1. When the oil quality is poor and not suitable for sampling, in order to improve efficiency, the second oil outlet valve 901 can be opened, the third main valve 24 can be closed, and the oil can flow directly through the second oil outlet branch 90 into the filter 35, the first pressure gauge 36, the bottom oil pump 31, the second pressure gauge 37, the second check valve 38, and the oil drain valve 39 of the first oil outlet branch 3, and then flow to the outside. When the oil in the quality inspection barrel 21 is not completely drained, the third oil outlet valve 911 is opened, and the oil flows from the outlet of the quality inspection barrel 21 through the first oil outlet branch 3 to the third oil outlet valve 911 of the third oil outlet branch 91, and then flows to the outside.

[0068] When performing special sampling and testing, if it is necessary to test the high point 113 of the oil product, the first switch valve 614, the second switch valve 615, and the second sampling valve 62 are opened, and the oil product flows to the outside through the first switch valve 614, the second switch valve 615, and the second sampling valve 62, and is caught on the outside with a small bucket for sampling and testing; if it is necessary to test the midpoint 114 of the oil product, the third switch valve 616, the fourth switch valve 617, and the second sampling valve 62 are opened, and the oil product flows to the outside through the third switch valve 616, the fourth switch valve 617, and the second sampling valve 62, and is caught on the outside with a small bucket for sampling and testing; if it is necessary to test the low point 115 of the oil product, the fifth switch valve 618, the sixth switch valve 619, and the second sampling valve 62 are opened, and the oil product flows to the outside through the fifth switch valve 618, the sixth switch valve 619, and the second sampling valve 62, and is caught on the outside with a small bucket for sampling and testing. When sampling is completed and the oil needs to be recovered, the second recovery valve 71 is opened, and the oil flows into the quality inspection barrel 21 through the second recovery valve 71 of the second sampling recovery branch 7.

[0069] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A pre-tank oil quality inspection system, characterized in that: include: An oil tank is used to load oil products, and an oil outlet is provided at the bottom of the oil tank; The main oil transmission path is provided with a quality inspection barrel and a first main path valve connected to the quality inspection barrel, the upstream of the main oil transmission path is connected to the oil outlet through the first main path valve, and the quality inspection barrel is located downstream of the main oil transmission path; A first oil outlet branch is provided with a bottom oil pump and a first oil outlet valve connected to the bottom oil pump, wherein the upstream of the first oil outlet branch is connected to the quality inspection barrel through the first oil outlet valve, and the downstream of the first oil outlet branch is connected to the outside through the bottom oil pump; The first sampling branch is provided with a first sampling component and a first sampling valve connected to the first sampling component. The upstream of the first sampling branch is connected to the oil product transmission main line through the first sampling valve, and the first sampling component is located downstream of the first sampling branch.

2. The pre-tank oil quality inspection system according to claim 1 is characterized in that: It also includes a second sampling branch, the second sampling branch is provided with a second sampling assembly and a second sampling valve connected to the second sampling assembly, the upstream of the second sampling branch is connected to the inner wall of the oil tank through the second sampling assembly, and the downstream of the second sampling branch is connected to the outside through the second sampling valve; The second sampling component includes at least one valve component arranged in parallel with the second sampling branch, and the valve component is connected to the point of the floating liquid level height of the oil tank; when there are multiple valve components, the multiple valve components are arranged in sequence according to the set positions along the liquid level height direction in the oil tank.

3. The pre-tank oil quality inspection system according to claim 2 is characterized in that: The interior of the oil tank includes a floating structure, and the second sampling assembly includes a first valve assembly, a second valve assembly and at least one third valve assembly, the first valve assembly is connected to a high point of the floating structure, the second valve assembly is connected to a low point of the floating structure, and the third valve assembly is connected to a midpoint of an inner wall of the floating structure.

4. The pre-tank oil quality inspection system according to claim 3 is characterized in that: It also includes a second sampling recovery branch, the second sampling recovery branch is provided with a second recovery valve, the upstream of the second sampling recovery branch is connected between the second sampling component and the second sampling valve, and the downstream of the second sampling recovery branch is connected between the first main valve and the quality inspection barrel; and / or The first valve assembly comprises a first switch valve connected to the oil tank and a second switch valve connected downstream of the first switch valve, the first switch valve is a flat gate valve, and the second switch valve is a ball valve; and / or The second valve assembly comprises a third switch valve connected to the oil tank and a fourth switch valve connected downstream of the third switch valve, the third switch valve is a flat gate valve, and the fourth switch valve is a ball valve; and / or The third valve assembly includes a fifth switch valve connected to the oil tank and a sixth switch valve connected downstream of the fifth switch valve. The fifth switch valve is a flat gate valve, and the sixth switch valve is a ball valve.

5. The pre-tank oil quality inspection system according to claim 1 is characterized in that: It also includes a first sampling recovery branch, which is provided with a first recovery valve. The upstream of the first sampling recovery branch is connected to the outlet of the first sampling component, and the downstream of the first sampling recovery branch is connected between the outlet of the quality inspection barrel and the first oil outlet valve; or, the downstream of the first sampling recovery branch is connected to the inlet of the quality inspection barrel.

6. The pre-tank oil quality inspection system according to claim 1 is characterized in that: It also includes an oil recovery branch, which is provided with at least one oil recovery valve, the first oil outlet branch is provided with an oil drain valve, and the oil drain valve is located between the bottom oil pump and the outside, the oil transmission main line is provided with a second main line valve, and the second main line valve is located between the first main line valve and the quality inspection barrel, the upstream of the oil recovery branch is connected between the bottom oil pump and the oil drain valve, and the downstream of the oil recovery branch is connected between the first main line valve and the second main line valve.

7. The pre-tank oil quality inspection system according to claim 6 is characterized in that: One of the oil recovery valves is disposed close to the oil transmission main path; and / or One of the oil recovery valves is arranged close to the first oil outlet branch, and / or The oil recovery valve is a ball valve.

8. The pre-tank oil quality inspection system according to claim 1 is characterized in that: It also includes a second oil outlet branch, which is provided with a second oil outlet valve, and a third main valve is provided between the first main valve of the oil transmission main line and the quality inspection barrel, the upstream of the second oil outlet branch is connected between the first main valve and the third main valve, and the downstream of the second oil outlet branch is connected between the first oil outlet valve and the bottom oil pump.

9. The pre-tank oil quality inspection system according to claim 8, characterized in that: The third main valve and the first sampling valve are vertically distributed on a horizontal plane; and / or The third main valve and the first sampling valve are arranged in parallel on a horizontal plane, and the third main valve and the first sampling valve are arranged close to each other; and / or The third main valve and the first sampling valve are parallel and relatively distributed on a horizontal plane; and / or The third main valve is a spring return valve; and / or The second oil outlet valve is a ball valve; and / or The first sampling valve is a spring return valve.

10. The pre-tank oil quality inspection system according to claim 1, characterized in that: It also includes a third oil outlet branch, which is provided with a third oil outlet valve. The upstream of the third oil outlet branch is connected between the outlet of the quality inspection barrel and the first oil outlet valve, and the downstream of the third oil outlet branch is used to connect to the outside.

11. The pre-tank oil quality inspection system according to claim 10, characterized in that: The third oil outlet branch is arranged close to the outlet of the quality inspection barrel; and / or The third oil outlet valve is a spring return valve.

12. The pre-tank oil quality inspection system according to claim 1, characterized in that: The first oil outlet branch is provided with a sight glass, and the sight glass is arranged between the outlet of the quality inspection barrel and the first oil outlet valve; and / or The first oil outlet branch is provided with a first one-way valve, the inlet of the first one-way valve is connected to the first oil outlet valve, and the outlet of the first one-way valve is connected to the bottom oil pump; and / or The first oil outlet branch is provided with a filter, and the filter is arranged between the first oil outlet valve and the bottom oil pump; and / or The first oil outlet branch is provided with a first pressure gauge, and the first pressure gauge is arranged between the first oil outlet valve and the bottom oil pump; and / or The first oil outlet branch is provided with a second pressure gauge, and the second pressure gauge is provided between the bottom oil pump and the outside; and / or The first oil outlet branch is provided with a second one-way valve, and the second one-way valve is provided between the bottom oil pump and the outside; and / or The quality inspection barrel comprises at least one window and a barrel body, wherein the window is arranged on a side wall of the barrel body and faces the first sampling assembly; and / or The quality inspection barrel comprises at least one window and a barrel body, wherein the window is arranged on a side wall of the barrel body and faces the oil tank and the bottom oil pump; and / or The quality inspection barrel comprises a top cover, a barrel body and a pressing handle, wherein the top cover is assembled to the barrel body, the pressing handle is assembled to the barrel body and is close to the side wall of the barrel body, and the pressing handle is used to open or close the top cover; and / or The quality inspection barrel comprises a barrel body and a barrel bracket, wherein the barrel bracket is arranged at the bottom of the barrel body for supporting the barrel body, and the height of the barrel bracket from the ground is 0.4-0.9m; and / or The pre-tank oil quality inspection system comprises an operating column and a pressing piece arranged on the operating column, wherein the operating column is arranged on a side close to the bottom oil pump and the quality inspection barrel and assembled on the ground, and the pressing piece is used to operate the bottom oil pump to open or close; and / or The first main valve is a flat gate valve; and / or The first oil outlet valve is a ball valve.

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