Crude oil storage tank with stirring function

Abstract

According to the crude oil storage tank with the stirring function, the rotary spraying pipeline is arranged in the crude oil storage tank body, liquid with pressure is drained into the crude oil storage tank body through the rotary spraying pipeline, the liquid with pressure is sprayed out in a rotary mode through the rotary spraying head, and the liquid with pressure is sprayed out in the rotary spraying process. The fluid with the pressure can convey certain driving force to oil sludge at the bottom of the crude oil storage tank body in the rotating process, meanwhile, the stirring effect on the oil sludge at the bottom is achieved under the cooperation of the pressure, the deposited oil sludge and crude oil are taken out of the crude oil storage tank together when the storage tank is filled with oil, the oil sludge can be cleared away in the operation process, and the operation efficiency is improved. The oil sludge is not required to be specially cleaned in the later stage, and a worker does not need to enter the tank for cleaning, so that the operation risk is reduced, the cleaning time is shortened, the oil sludge is timely cleaned, and a dehydration pipeline of the storage tank can be prevented from being blocked.

Description

Technical Field

[0001] The utility model belongs to the technical field of crude oil and relates to a crude oil storage tank with a stirring function. Background Art

[0002] At present, the storage tank design scheme adopted by oil and gas fields often adopts the GB50341 "Vertical Cylindrical Steel Welded Oil Tank Design Specifications". For the storage of stabilized crude oil, internal and external floating roof crude oil storage tanks are used. The mixing and external transmission function of the heavy component crude oil at the bottom of the tank is not considered during the design stage of the storage tanks of oil and gas field enterprises.

[0003] In actual operations, there is a lot of sludge inside the storage tank, which takes a long time to clean. Mechanical cleaning is required to clear the sludge deposited on the bottom of the tank, and a 50,000 cubic meter storage tank needs 60 days to complete; the operation is risky, and after mechanical cleaning, manual entry into the tank to remove the sludge is required, and operations are carried out in a confined space filled with oil and gas, which poses a high safety risk; hazardous waste management is difficult, and the sludge must be managed in accordance with hazardous waste, and environmental protection procedures such as transportation and disposal must be strictly followed; the dehydration effect is poor, and the sludge often blocks the tank dehydration pipeline, resulting in a long dehydration time and poor effect, affecting the quality of the crude oil delivered to the outside; heavy components are wasted, and the sludge is composed of heavy components such as wax and asphalt, which are completely dissolved at a temperature of 70°C, but are disposed of as hazardous waste. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that there is much oil sludge inside the storage tank, the cleaning time is long, there are operational risks during cleaning, and when there is a lot of oil sludge, the oil sludge often blocks the dehydration pipeline of the storage tank, resulting in poor dehydration effect, and provides a crude oil storage tank with a stirring function.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A crude oil storage tank with a stirring function, comprising a crude oil storage tank body, a rotary spray pipeline is arranged in the crude oil storage tank body, and an inlet end of the rotary spray pipeline is connected to an inlet and outlet oil pipeline assembly;

[0007] A rotary nozzle is arranged at the outlet end of the rotary spray pipeline, and the rotary nozzle is used to convey pressurized fluid to the inside of the crude oil storage tank body and stir the bottom sludge by the pressurized fluid.

[0008] The further improvement of the utility model is:

[0009] The inlet end of the rotary spray pipeline is located outside the crude oil storage tank body.

[0010] A support assembly is arranged inside the crude oil storage tank body, and the support assembly is used to support the rotary spray pipeline.

[0011] The support assembly includes a first support leg and a second support leg that are spaced apart.

[0012] The rotary spray head is connected to the rotary spray pipeline through a first flange.

[0013] The oil inlet and outlet pipeline assembly comprises a first inlet pipeline, one end of the first inlet pipeline is connected to the first inlet of the crude oil storage tank body, and the other end is connected to the second inlet pipeline;

[0014] One end of the second inlet pipeline away from the first inlet pipeline is connected to the inlet end of the rotary spray pipeline through the second inlet of the crude oil storage tank body.

[0015] The first inlet pipeline includes an inlet and outlet oil pipeline flexible connecting pipe, one end of which is connected to the first inlet of the crude oil storage tank body, and the other end is connected to the inlet and outlet oil pipeline, and the inlet and outlet oil pipeline is connected to the second inlet pipeline.

[0016] The second inlet pipeline is a soft connecting pipe.

[0017] A first inlet valve is arranged at the first inlet.

[0018] A second inlet valve is arranged at the second inlet.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model discloses a crude oil storage tank with a stirring function. A rotary spray pipeline is arranged inside the crude oil storage tank body. Liquid with pressure is drained into the interior of the crude oil storage tank body through the rotary spray pipeline, and the fluid with pressure is sprinkled out by rotating through a rotary nozzle. In the process of rotary spraying, the fluid with pressure can deliver a certain driving force to the oil sludge at the bottom of the crude oil storage tank body during the rotation process. At the same time, the stirring effect on the oil sludge at the bottom is achieved under the cooperation of pressure, so that the deposited oil sludge and crude oil are taken out of the crude oil storage tank together when the storage tank is filled with oil. The device can clean the oil sludge during operation, and there is no need to clean the oil sludge specifically at a later stage, and there is no need to manually enter the tank for cleaning, which reduces the operation risk and shortens the cleaning time. In addition, the oil sludge is cleaned in time, which can avoid blocking the dehydration pipeline of the storage tank.

[0021] Furthermore, in the utility model, a support assembly is arranged inside the crude oil storage tank body, and the support assembly is used to support the rotary spraying pipeline to ensure the stability of the connection of the rotary spraying pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a general schematic diagram of a crude oil storage tank of the utility model;

[0024] Figure 2 This is a structural diagram of a rotary sprinkler head of the utility model;

[0025] Figure 3 This is a schematic diagram of the connection between the rotary spray pipeline of the utility model and the wall of the crude oil storage tank.

[0026] Among them: 1- crude oil storage tank body; 2- oil inlet and outlet pipelines; 3- soft connecting pipes of oil inlet and outlet pipelines; 4- first inlet valve; 5- soft connecting pipe; 6- second inlet valve; 7- rotary spray pipeline; 8- rotary spray device components; 9- blind flange; 10- first supporting leg; 11- second supporting leg; 12- first flange; 13- rotary spray head; 14- tank bottom plate; 15- crude oil storage tank wall; 16- second flange; 17- third flange. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] The utility model is further described in detail below with reference to the accompanying drawings:

[0034] See also Figures 1 to 3 The embodiment of the utility model discloses a crude oil storage tank with a stirring function, which is mainly used for crude oil storage facilities in oil and gas storage and transportation sites. The system is mainly composed of a rotating nozzle system and a pipeline system. Through daily operation, the device can reduce the component crude oil in the tank, reduce the sludge content, reduce the operation risk, and increase the economic benefit.

[0035] Specifically includes the following structures:

[0036] Example 1

[0037] The utility model embodiment discloses a crude oil storage tank with a stirring function, comprising a crude oil storage tank body 1, wherein a rotary spray pipeline 7 is arranged inside the crude oil storage tank body 1, and the inlet end of the rotary spray pipeline 7 is connected to the inlet and outlet oil pipeline components; a rotary spray head 13 is arranged at the outlet end of the rotary spray pipeline 7, and the rotary spray head 13 is used to convey pressurized fluid inside the crude oil storage tank body 1 to stir the oil sludge at the bottom.

[0038] The device disclosed in the present embodiment is provided with a rotary spray pipeline inside the crude oil storage tank body, through which the pressurized liquid is drained into the interior of the crude oil storage tank body, and the pressurized fluid is sprinkled out by rotating through a rotary nozzle, and in the process of rotary spraying, the pressurized fluid can deliver a certain driving force to the sludge at the bottom of the crude oil storage tank body during the rotation, and at the same time, the stirring effect on the bottom sludge is achieved under the cooperation of pressure, so that the deposited sludge and crude oil are taken out of the crude oil storage tank together when the storage tank is filled with oil. The device can clean the sludge during operation, without the need to clean the sludge specifically at a later stage, and without the need to manually enter the tank for cleaning, which reduces the operation risk and shortens the cleaning time. In addition, the sludge is cleaned in time to avoid blocking the dehydration pipeline of the storage tank.

[0039] Example 2

[0040] The utility model embodiment discloses a crude oil storage tank with a stirring function, comprising a crude oil storage tank body 1, wherein a rotary spray pipeline 7 is arranged inside the crude oil storage tank body 1, and the inlet end of the rotary spray pipeline 7 is connected to the inlet and outlet oil pipeline components; a rotary spray head 13 is arranged at the outlet end of the rotary spray pipeline 7, and the rotary spray head 13 is used to convey pressurized fluid inside the crude oil storage tank body 1 to stir the bottom oil sludge, and the inlet end of the rotary spray pipeline 7 is located outside the crude oil storage tank body 1.

[0041] In this embodiment, the rotary spray pipeline 7 penetrates the crude oil storage tank wall 15 of the crude oil storage tank body 1 and extends into the interior of the crude oil storage tank body 1, wherein a blind flange 9 is provided at the port where the rotary spray pipeline 7 extends into the interior of the crude oil storage tank body 1, and the rotary spray pipeline 7 is sealed by the blind flange 9.

[0042] Furthermore, in this embodiment, the rotary spray pipeline 7 is fixed to the tank wall 15 of the crude oil storage tank by welding.

[0043] Furthermore, in this embodiment, the rotary spray pipeline 7 includes two connected pipelines, and the two pipelines are connected by a third flange 17.

[0044] Example 3

[0045] The utility model embodiment discloses a crude oil storage tank with a stirring function, comprising a crude oil storage tank body 1, wherein a rotary spray pipeline 7 is arranged inside the crude oil storage tank body 1, and the inlet end of the rotary spray pipeline 7 is connected to the inlet and outlet oil pipeline components; a rotary spray head 13 is arranged at the outlet end of the rotary spray pipeline 7, and the rotary spray head 13 is used to convey pressurized fluid inside the crude oil storage tank body 1 to stir the bottom oil sludge, and a support component is arranged inside the crude oil storage tank body 1, and the support component is used to support the rotary spray pipeline 7.

[0046] Furthermore, in this embodiment, the support member is mainly used to provide bottom support and stability for the rotary spray pipeline. The upper end of the support component is connected to the rotary spray pipeline 7, and the lower end is connected to the tank bottom plate 14 of the crude oil storage tank body 1.

[0047] Furthermore, in this embodiment, the support assembly includes a first support leg 10 and a second support leg 11 that are spaced apart.

[0048] Example 4

[0049] The utility model embodiment discloses a crude oil storage tank with a stirring function, comprising a crude oil storage tank body 1, wherein a rotary spray pipeline 7 is arranged inside the crude oil storage tank body 1, and the inlet end of the rotary spray pipeline 7 is connected to the inlet and outlet oil pipeline components; a rotary spray head 13 is arranged at the outlet end of the rotary spray pipeline 7, and the rotary spray head 13 is used to convey pressurized fluid inside the crude oil storage tank body 1 to stir the bottom oil sludge, and the rotary spray head 13 is connected to the rotary spray pipeline 7 through a first flange 12.

[0050] In this embodiment, the rotary nozzle 13 is installed at the lower end of the rotary spray pipeline 7. The rotary nozzle 13 can spray pressurized liquid while rotating, so as to generate a pushing and stirring force on the oil sludge at the bottom, thereby achieving a stirring effect of the oil sludge.

[0051] Furthermore, the first flange 12 and the rotating nozzle 13 constitute a rotary spray assembly 8.

[0052] Example 5

[0053] The utility model embodiment discloses a crude oil storage tank with a stirring function, comprising a crude oil storage tank body 1, wherein a rotary spray pipeline 7 is arranged in the crude oil storage tank body 1, and the inlet end of the rotary spray pipeline 7 is connected to an oil inlet and outlet pipeline assembly; a rotary spray head 13 is arranged at the outlet end of the rotary spray pipeline 7, and the rotary spray head 13 is used to convey pressurized fluid inside the crude oil storage tank body 1 to stir the bottom oil sludge, and the first inlet pipeline of the oil inlet and outlet pipeline assembly, one end of the first inlet pipeline is connected to the first inlet of the crude oil storage tank body 1, and the other end is connected to the second inlet pipeline, and the end of the second inlet pipeline away from the first inlet pipeline is connected to the inlet end of the rotary spray pipeline 7 through the second inlet of the crude oil storage tank body 1.

[0054] Example 6

[0055] The embodiment of the utility model discloses a crude oil storage tank with a stirring function, including a crude oil storage tank body 1, a rotary spray pipeline 7 is arranged inside the crude oil storage tank body 1, and the inlet end of the rotary spray pipeline 7 is connected to the oil inlet and outlet pipeline assembly; a rotary spray head 13 is arranged at the outlet end of the rotary spray pipeline 7, and the rotary spray head 13 is used to convey pressurized fluid inside the crude oil storage tank body 1 to stir the bottom oil sludge, and the oil inlet and outlet pipeline assembly includes a first inlet pipeline, one end of the first inlet pipeline is connected to the first inlet of the crude oil storage tank body 1, and the other end is connected to the second inlet pipeline, and the end of the second inlet pipeline away from the first inlet pipeline is connected to the inlet end of the rotary spray pipeline 7 through the second inlet of the crude oil storage tank body 1. The first inlet pipeline includes an inlet and outlet oil pipeline soft connecting pipe 3, one end of the inlet and outlet oil pipeline soft connecting pipe 3 is connected to the first inlet of the crude oil storage tank body 1, and the other end is connected to the inlet and outlet oil pipeline 2, and the inlet and outlet oil pipeline 2 is connected to the second inlet pipeline.

[0056] Furthermore, a first inlet valve 4 is provided at the first inlet, the inlet and outlet oil pipeline flexible connecting pipe 3 is connected to the first inlet valve 4, and the first inlet valve 4 is connected to the crude oil storage tank wall 15 through a flange.

[0057] Furthermore, the second inlet pipeline is a flexible connecting pipe 5, and a second inlet valve 6 is arranged at the second inlet. Specifically, one end of the flexible connecting pipe 5 is connected to the inlet and outlet oil pipelines 2, and the other end is connected to the second inlet valve 6. The second inlet valve 6 is connected to the rotary spray pipeline 7 through a second flange 16.

[0058] The working principle of this device is:

[0059] When it is necessary to start the in-tank rotary sprayer, open the oil inlet valve at the front end of the crude oil storage tank to ensure that the oil inlet pipeline is full of petroleum liquid and under pressure.

[0060] At this time, the second inlet valve 6 is opened and the first inlet valve 4 is closed. The pressurized fluid will reach the rotary nozzle 13 through the rotary spray pipeline 7. At this time, the rotary nozzle 13 starts to rotate under the impetus of the medium pressure and flow rate, and sprays the medium. The sprayed high-speed medium stirs the oil sludge deposited around. Under the stirring action, the oil sludge is taken out of the crude oil storage tank together with the crude oil when the storage tank is filled with oil.

[0061] The device can avoid excessive sludge on the tank bottom caused by the deposition of heavy components, and solve the problem of high risk in tank cleaning operations.

[0062] In terms of economic benefits, taking a 50,000 cubic meter storage tank as an example, the single environmental protection disposal fee is 2500*439*1.1=1.2073 million yuan. After adding the agitator, the environmental protection disposal fee is reduced by 80%, which is 965,800 yuan less, and the crude oil sales fee is increased by 2500*0.8*4413=8.826 million yuan, a total increase of 9.7918 million yuan. In terms of management benefits, the mechanical cleaning operation time is shortened, and the safety risk of long-term human entry into the storage tank operation is reduced; the amount of solid waste environmental protection treatment is reduced at the source; through operation control, the sludge blocking of the dehydration pipeline is reduced, and the water content exceeds the standard is reduced.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crude oil storage tank with stirring function, characterized in that: It comprises a crude oil storage tank body (1), a rotary spray pipeline (7) is arranged inside the crude oil storage tank body (1), and the inlet end of the rotary spray pipeline (7) is connected to the inlet and outlet oil pipeline components; A rotary spray head (13) is arranged at the outlet end of the rotary spray pipeline (7), and the rotary spray head (13) is used to convey pressurized fluid to the inside of the crude oil storage tank body (1) and to stir the oil sludge at the bottom by means of the pressurized fluid.

2. The crude oil storage tank with stirring function according to claim 1, characterized in that: The inlet end of the rotary spray pipeline (7) is located outside the crude oil storage tank body (1).

3. The crude oil storage tank with stirring function according to claim 1, characterized in that: A support assembly is arranged inside the crude oil storage tank body (1), and the support assembly is used to support the rotary spray pipeline (7).

4. The crude oil storage tank with stirring function according to claim 3, characterized in that: The support assembly comprises a first support leg (10) and a second support leg (11) which are spaced apart.

5. The crude oil storage tank with stirring function according to claim 1, characterized in that: The rotary spray head (13) is connected to the rotary spray pipeline (7) via a first flange (12).

6. The crude oil storage tank with stirring function according to claim 1, characterized in that: The oil inlet and outlet pipeline assembly comprises a first inlet pipeline, one end of which is connected to a first inlet of the crude oil storage tank body (1), and the other end of which is connected to a second inlet pipeline; One end of the second inlet pipeline away from the first inlet pipeline is connected to the inlet end of the rotary spray pipeline (7) through the second inlet of the crude oil storage tank body (1).

7. The crude oil storage tank with stirring function according to claim 6, characterized in that: The first inlet pipeline comprises an inlet and outlet oil pipeline flexible connecting pipe (3), one end of the inlet and outlet oil pipeline flexible connecting pipe (3) is connected to the first inlet of the crude oil storage tank body (1), and the other end is connected to the inlet and outlet oil pipeline (2), and the inlet and outlet oil pipeline (2) is connected to the second inlet pipeline.

8. The crude oil storage tank with stirring function according to claim 7, characterized in that: The second inlet pipeline is a soft connecting pipe (5).

9. The crude oil storage tank with stirring function according to claim 7, characterized in that: A first inlet valve (4) is arranged at the first inlet.

10. The crude oil storage tank with stirring function according to claim 7, characterized in that: A second inlet valve (6) is provided at the second inlet.

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