KR101849476B1 - Auto washing apparatus of crude oil tank and auto washing method using the same - Google Patents

Abstract

The present invention relates to an automatic crude oil tank washing apparatus and an automatic washing method to automatically control the injection of washing liquid capable of rapidly removing pollutants to be washed or removed in an industrial facility such as a crude oil tank, and to quantitatively determine a washed area and other areas. The automatic crude oil tank washing apparatus according to the present invention comprises: a first manhole and a second manhole which are formed on the side of the crude oil tank; an injection nozzle which is inserted into the first manhole of the crude oil tank, and is rotatable in a horizontal direction (X axis) and a vertical direction (Y axis); a pressurizing pump which is connected to the injection nozzle, and supplies washing liquid to the injection nozzle; a control unit which controls the injection nozzle; a power supply unit which supplies power to the injection nozzle; an intake pipe which is inserted into the second manhole of the crude tank; and a vacuum pump which is connected to the intake pipe. The control unit determines injection pressure and injection directions (X axis and Y axis) of the washing liquid injected from the injection nozzle and controls the rotation of the injection nozzle to automatically wash the crude oil tank.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crude oil tank,

The present invention relates to a crude oil tank automatic washing apparatus and an automatic washing method using the same. More particularly, the present invention relates to a crude oil tank which is capable of automatically controlling the injection of a cleaning liquid which can quickly remove contaminants which are required to be cleaned or removed in an industrial facility such as a crude oil tank, and quantitatively grasping a washed area and a non- And an automatic cleaning method using the same.

Long-term crude oil storage tanks require periodic maintenance. For such maintenance, move the crude oil (CRUDE OIL) from the crude oil storage tank to the extra storage tank and clean the remaining crude oil (CRUDE OIL) and foreign matter from the tank do.

Conventionally, a person is directly put into a tank to separately perform a forced exhaust operation for purifying air, or a separate process for continuously supplying oxygen for ventilation, which requires a lot of time and cost, and there is a risk of potential safety accident It became a difficult method to apply.

In addition, the bottom of the storage tank storing the crude oil accumulates foreign substances and it is very difficult to clean by a conventional method. Techniques related to an automatic crude oil storage tank cleaning apparatus that automatically cleans the cleaning process of crude oil foreign materials have been proposed.

With the related art, "Apparatus and method for cleaning the tank and recovery and treatment of the residual liquid in the tank" (Korean Patent Registration No. 10-171626, Patent Document 1) discloses a method of sucking and discharging residual liquid from a tank A second system unit having an oil-water separator for separating oil from the discharged residual liquid, means for treating the separated oil, and means for supplying a flushing liquid into the tank, and a second system unit having an inert gas generator Second and third delivery units for delivering the first, second and third system units to a tank to be treated, respectively.

However, in Patent Document 1, when the storage tank is completely sealed, the pressure of the storage tank is made lower than the atmospheric pressure by using a blower to suck the SLUDGE. In this case, when the pressure in the storage tank becomes too low In the case of a large-sized storage tank, there is a fear that the tank may be distorted, and in the opposite case, there is a problem that the suction of the sludge is not performed well.

In addition, since a large-sized crude oil storage tank having a diameter of about 80 m is generalized, the roof (ROOF) of the tank is not fixed type but is a subtype rising and falling according to the flow rate of stored crude oil (CRUDE OIL) There is a problem in that it can not be used in a negative type crude oil storage tank and can be used only in a small, airtight tank.

In addition, the method of spraying the fluid at room temperature and high pressure for pulverizing sludge has drawbacks in that the fluidity is increased when the temperature rises and the fluidity is lowered when the temperature is lowered due to the nature of the crude sludge. As compared with the method using the fluid having high temperature and high pressure, And the use of the sludge in the winter season is considerably less than that of the sludge.

In addition, the installation of separate units (UNIT) in the transportation means is costly to manufacture the equipment, which causes cost increase of the tank washing operation and is very unproductive compared to the limited tank washing amount .

In addition, the tank cleaning facility is operated by a combination of a large number of pumps and valves in order to suck and discharge the sludge and to separate the water from the sludge. However, since all the operation methods are manual, there is a problem that labor and time are wasted. It is difficult to adjust the height of the spray nozzle and to rotate the nozzle so that it is difficult to effectively clean the tank and a long washing time is required.

On the other hand, it is often difficult to ensure visibility due to sticking of foreign matter to the camera, which is essential for remote control by automatic cleaning, or due to oil evaporation or steam generated inside the facility, wiper). However, it has disadvantages such as frequent breakdown in working conditions such as industrial facilities, and difficulty in maintaining performance guarantee for a long period of time.

The present invention relates to a crude oil tank automatic cleaning apparatus capable of automatically controlling a cleaning fluid injection capable of quickly removing contaminants which are required to be cleaned or removed in an industrial facility such as a crude oil tank and quantitatively grasping the washed region and the non- And an automatic cleaning method using the same.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

The crude oil tank automatic washing apparatus according to an embodiment of the present invention includes a first manhole and a second manhole formed on a side surface of the crude oil tank and a second manhole inserted in the first manhole of the crude oil tank, A control unit connected to the injection nozzle for controlling the operation of the injection nozzle, a power supply unit for supplying power to the injection nozzle, , A suction pipe inserted into the second manhole of the crude oil tank, and a vacuum pump connected to the suction pipe, wherein the control unit controls the injection pressure of the cleaning liquid injected from the injection nozzle, The jetting distance D is determined and the rotary operation of the jetting nozzle is controlled to automatically clean the crude oil tank.

The display unit may further include a display unit connected to the control unit, and the display unit may output cleaning sign information and wash operation information according to the spray distance and the spray direction of the wash liquid.

Wherein the working tank is divided into a working area and a safety area and one end of the crude oil tank, the injection nozzle and the suction pipe is disposed in the working area, and the pressure pump, the control part, the power supply part, And the display portion may be disposed in the safety zone.

Meanwhile, the automatic cleaning method according to an embodiment of the present invention includes a first step of measuring an initial injection speed V ₀ of a cleaning liquid sprayed from the spray nozzle, a step of injecting the spray nozzle into a first manhole of the crude oil tank A third step of aligning the injection nozzle to a set initial position, a fourth step of operating the pressurizing pump and the vacuum pump, rotating the injection nozzle in the horizontal direction (X-axis) A sixth step of determining whether the spraying distance of the washing liquid sprayed from the spraying nozzle is within the spraying range of the crude oil tank or not if the spraying distance of the washing liquid is within the spraying range, If the ejection distance of the cleaning liquid does not correspond to the set end position, the cleaning is completed within the current cleaning liquid ejection distance A step of returning to the fifth step, and a step of returning to the fifth step when the ejection distance of the cleaning liquid is not within the ejection range, And a tenth step of reducing the jetting distance by a predetermined distance and returning to the sixth step.

=0)하게 배치한 후 측정할 수 있다.In addition, the initial injection velocity V ₀ of the cleaning liquid is calculated by the following equation (1), and the nozzle is horizontally moved in the vertical direction (Y axis)

= 0).

[Equation 1]

는 노즐의 수직방향 회전 각도,

는 초기 분사 속도,

는 중력 가속도,

는 노즐의 설치 높이를 나타낸다.)(Where D is the spray distance of the washer fluid,

The vertical rotation angle of the nozzle,

The initial injection speed,

Gravity acceleration,

Represents the installation height of the nozzle.)

Further, in the sixth step, it is possible to judge whether the spraying distance of the washing liquid is within the spraying range in the crude oil tank, if the condition of the following formula (2) is satisfied.

&Quot; (2) "

는 노즐의 수평방향 회전 각도, r은 원유 탱크의 반지름을 나타낸다.)(Where D is the spray distance of the washer fluid,

Is the horizontal rotation angle of the nozzle, and r is the radius of the crude oil tank.)

Further, the method may further include an eleventh step of displaying the cleaning trajectory information and the cleaning operation information according to the spraying distance and the spraying direction of the cleaning solution through the display unit.

In the seventh step, the end position may be set to a predetermined distance based on a point at which the distance from the first manhole is the largest in the crude oil tank.

The crude oil tank automatic washing apparatus and the automatic washing method using the same according to the present invention automatically control the washing fluid injection capable of rapidly removing contaminants which are required to be washed or removed in an industrial facility such as a crude oil tank, It is possible to grasp the area quantitatively.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and, together with the description, And shall not be interpreted.
1 is a block diagram schematically showing an automatic crude oil tank cleaning apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating an automatic cleaning method according to an embodiment of the present invention.
3 is a graph showing the relationship between the spraying direction and the spraying distance along the vertical direction (Y axis) in the present invention.
4 is a graph showing the relationship between the jet direction and the jetting distance in the horizontal direction (X axis) of the cleaning liquid in the crude oil tank in the present invention.
FIG. 5 schematically shows cleaning sign information and washing operation information output to the display unit of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more faithful and complete, and will fully convey the scope of the invention to those skilled in the art.

Also, in the following drawings, each configuration is exaggerated for convenience and clarity of description, and the same reference numerals denote the same elements in the drawings. As used herein, the term "and / or" includes any and all combinations of any of the listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

<Crude oil tank automatic cleaning device>

1 is a block diagram schematically showing an automatic crude oil tank cleaning apparatus according to an embodiment of the present invention.

1, an automatic crude oil tank cleaning apparatus 100 according to an embodiment of the present invention includes a crude oil tank 10, an injection nozzle 20, a pressurizing pump 30, a control unit 40, a power supply unit 50 ), A vacuum pump (60), and a suction pipe (62).

Here, the crude oil tank automatic washing apparatus 100 is divided into a safety zone A and a working zone B as shown in FIG. Here, the safe area (A) is defined as a relatively safe area even in the event of an accident, and the working area (B) is defined as a location near the work place where a safety accident is likely to occur during the cleaning operation. In a preferred embodiment of the present invention, a distance from a crude oil tank 10 is defined as a working area within a radius of 50 m and a safety area outside the working area.

The crude oil tank 10 provides a space for storing crude oil, and is preferably formed in a cylindrical shape.

At least two manholes are formed on the sidewall of the crude oil tank 10 and include a first manhole 11 and a second manhole 12 formed on the opposite side of the first manhole 11.

The injection nozzle 20 is inserted into the first manhole 11 and disposed inside the crude oil tank 10.

Here, a cleaning liquid supply pipe is connected to the rear end of the injection nozzle 20, and a cleaning liquid (water or diesel) is supplied through a pressurizing pump 30 installed in the safety zone A, and a cleaning liquid is supplied into the crude oil tank 10 It can be sprayed. Such a cleaning liquid may be jetted by a jet injection type or a spray injection type.

On the other hand, in the present invention, it is preferable to keep the pressure of the pressurizing pump 30 constant.

Further, a bracket (flange) for fixedly engaging with the first manhole 11 is formed in the injection nozzle 20.

These injection nozzles 20 are individually rotatable in the horizontal direction (X-axis) and the vertical direction (Y-axis) and are powered through the power supply 40 in the safety zone A.

Here, the power supply unit 40 is generally composed of a hydraulic power unit (HPU), and may be an electric power generator in some cases. However, a hydraulic power unit is used because there is a possibility of explosion due to oil evaporation like the crude oil tank 10.

The control unit 40 controls the operation of the injection nozzle 20 and controls the injection pressure of the cleaning liquid injected from the injection nozzle 20 and the injection distance D along the injection direction (X axis and Y axis) , And controls the rotation operation of the injection nozzle (20).

Meanwhile, the cleaning liquid injected from the injection nozzle 20 follows the physical motion law (Newton's second law) as shown in FIG. Assuming that the inside of the crude oil tank 10 is a sealed space close to the vacuum pressure, it is assumed that the resistance of the air is ignored, and the free fall motion by the gravity in the vertical direction (Y axis) And the initial velocity of the particles leaving the injection nozzle 20 is V ₀ , the velocities on the x and y axes at time t are as shown in [Equation 1] and [Equation 2] The position is defined as [Equation 3] and [Equation 4].

[Equation 1]

는 X축의 속도,

는 분사 초기 속도,

는 수평면에 대한 분사 노즐(20)의 분사 각도를 나타낸다.) (here,

The speed of the X axis,

Is the initial injection velocity,

Represents the injection angle of the injection nozzle 20 with respect to the horizontal plane.)

[Formula 2]

는 Y축의 속도, g는 중력 가속도를 나타낸다.) (here,

Is the velocity in the Y-axis, and g is the gravitational acceleration.)

[Formula 3]

(Where t represents the elapsed time).

[Formula 4]

Since the required information in the embodiment of the present invention is the horizontal distance (jetting distance, D) reached by the cleaning liquid sprayed from the jetting nozzle 20, Y = 0 in D and substituting this into [Equation 4] 5] can be obtained, and since -1 g / 2 is not 0, [Formula 5] can be defined as a quadratic equation for time t.

[Formula 5]

Accordingly, [Equation 5] is applied to the root formula, and the time (tD) at D can be defined as [Equation 6].

[Formula 6]

Thus, from [Expression 3], [Expression 7] holds in D, and when Expression 6 is substituted in Expression 7, the injection distance D can be defined as a function of V ₀ .

[Equation 7]

=0) 설정하면, [식 7]은 [식 8]과 같이 간단히 정리되며, 실제로 분사 거리(D)를 측정하면, 분사 초기 속도(

)를 연산할 수 있다.Here, the vertical angle of the injection nozzle 20 is set to be horizontal (

= 0), [Expression 7] is simply summarized as in [Expression 8], and if the injection distance D is actually measured, the injection initial velocity

) Can be calculated.

[Equation 8]

)는 고정되므로, 수평면에 대한 분사 노즐(20)의 분사 각도(

)에 따른 분사 거리(D)를 도출할 수 있다.That is, as described above, the present invention maintains the pressure of the pressurizing pump 30 constant,

The injection angle of the injection nozzle 20 with respect to the horizontal plane

(D) can be derived.

4, when the area where the injection nozzle 20 is installed in the crude oil tank 10 is defined as the origin of coordinates and the bottom surface of the crude oil tank 10 is defined as a circle, the radius of the crude oil tank 10 In this case, when the injection nozzle 20 rotates in the horizontal direction (X axis), the injection distance D must satisfy the following expression (9), and [Expression 10] (11) should be satisfied.

[Equation 9]

[Equation 10]

는 원점에서 좌우에 대한 분사 노즐(20)의 분사 각도를 나타낸다.) (here,

Represents the injection angle of the injection nozzle 20 from the origin to the left and right.)

[Equation 11]

The vacuum pump 60 is connected to a suction pipe 62 having one end inserted into the second manhole 12 of the crude oil tank 10 to suck and discharge contaminants in the crude oil tank 10 to the outside.

Here, the vacuum pump 60 installed in the safe zone A is used as the suction force to be extracted, and the vacuum tank 61 provided in the work zone B stores the actual pollutant.

Contaminants in the vicinity of the suction pipe 62 are sucked into the vacuum tank 61 and the vacuum tank 61 is filled with the contaminant when the inside of the vacuum tank 61 becomes close to the vacuum by the vacuum pump 60 Until then, work continues. In general, the vacuum tank 61 may be connected in series or in parallel so as to simultaneously remove as many contaminants as possible during a single operation.

In addition, one embodiment of the present invention further includes a display unit 200. [

FIG. 5 schematically shows cleaning sign information and washing operation information output to the display unit of the present invention. FIG.

Referring to FIG. 5, the display unit 200 outputs information on the cleaning operation, and the user or the administrator can confirm the progress of the operation and information on other operations.

), 현재 분사량, 작업시간, 초깃값(V₀), 가압 펌프 및 진공펌프의 동작 유무 및 세척 작업 궤적(T)을 출력할 수 있다.Here, the display unit 200 displays a current injection distance D, a current injection angle

), The current injection amount, the working time, the initial value (V ₀ ), the operation of the pressurizing pump and the vacuum pump, and the cleaning operation locus (T).

)는 분사 노즐(20)에 장착되어 있는 인코더(encoder) 값 등을 읽어서 표시될 수 있다. 현재 분사량은 가압 펌프(30)의 시간당 펌핑 용량을 기준으로 가압 펌프(30)를 작동시킨 시간(=작업시간)을 곱하여 구할 수 있으며, 작업시간은 가압펌프를 작동시킨 시간의 경과시간을 표시한다. 또한, 가압펌프와 진공펌프의 on/off 상태는 각 장치의 스위치 신호를 읽어 표시 가능하다.The current injection distance D can be expressed by the above-mentioned [Expression 7], and the current injection angle (

Can be displayed by reading an encoder value or the like mounted on the injection nozzle 20. The current injection amount can be obtained by multiplying the time (= operation time) in which the pressurizing pump 30 is operated based on the pumping capacity per hour of the pressurizing pump 30, and the operation time indicates the elapsed time of the operation of the pressurizing pump . The on / off state of the pressurizing pump and the vacuum pump can be read by reading the switch signal of each device.

&

)를 누적(적분)하여 화면에 표시한 것으로 세척액에 의해 어느 영역이 세척되었고, 세척되지 않았는지를 시각적으로 정량화(표시 눈금)하여 출력한다. 도 5에서는 일 실시예로 세척 궤적(trajectory, T)을 표시하였으나, 경우에 따라 세척한 영역과 그렇지 않은 영역을 다른 색으로 표현하여 구별하는 방식을 사용할 수도 있다.In addition, the display unit 200 displays a current injection distance D, an injection angle

&

) Is cumulatively (integrated) and displayed on the screen, which is visually quantified (indicated scale) by which area is cleaned and not cleaned by the cleaning liquid, and is output. Although the cleaning trajectory (T) is shown in FIG. 5 as an example, it is also possible to use a method of representing the washed region and the non-washed region by different colors.

<Automatic cleaning method>

2 is a flowchart illustrating an automatic cleaning method according to an embodiment of the present invention.

Referring to FIG. 2, an automatic cleaning method according to an embodiment of the present invention includes an initial injection speed measuring step S10, an injection nozzle injection step S20, an injection nozzle initial alignment step S30, (S90), a spraying nozzle left / right rotation step S50, a spraying range determination step S60, an end position determination step S70, a current spraying distance cleaning completion determination step S80, a spraying distance increasing step S90 And a step S100 of reducing the injection distance.

=0) 설정하고, 실제로 분사 거리(D)를 측정하여 [식 8]을 통해 분사 초기 속도(

)를 연산한다.In the initial injection speed measuring step S10, as described above, the vertical angle of the injection nozzle 20 is set to be horizontal

= 0), and actually the injection distance D is measured, and the injection initial velocity (

).

Here, it is preferable that the initial injection speed measuring step S10 is to measure the accurate injection distance D easily by arranging the injection nozzle 20 on the outside of the crude oil tank 10.

The injection nozzle 20 is inserted into the first manhole 11 of the crude oil tank 10 and the injection nozzle 20 is inserted into the first manhole 11 through the bracket (flange) .

Before the injection nozzle 20 is introduced into the crude oil tank 10, the foreign matter on the side of the crude oil tank 10 may be dropped to the bottom through a separate cleaning robot or the like.

In addition, in the injecting nozzle injection step S20, not only the injection nozzle 20 but also the end of the suction pipe 62 can be injected into the second manhole 12.

=0)을 바라보고, 분사 노즐(20)을 바닥과 가까운 방향으로 절곡된 각도(-45)를 설정한다. 이는 제 1 맨홀(11)의 바닥면을 기준으로 세척을 시작하기 위한 것일 뿐, 작업방법 및 환경에 따라 변경 가능하다. Thereafter, in the initial alignment step S30 of the injection nozzle initial position, the injection nozzle 20 is aligned. Here, the initial position is a front face that can be sprayed at a distance closest to the first manhole 11 into which the injection nozzle 20 is inserted

= 0), and sets the angle (-45) of the injection nozzle 20 bent in the direction close to the bottom. This is for starting cleaning only on the basis of the bottom surface of the first manhole 11, and can be changed depending on the working method and environment.

Thereafter, in a step S40 of operating the pressurizing pump and the vacuum pump, the pressurizing pump 30 is operated to spray the cleaning liquid from the injection nozzle 20, and the vacuum pump 60 is operated to remove foreign matter in the crude oil tank 10 And discharged to the outside.

Thereafter, in the injection nozzle left / right rotation step S50, the bottom surface of the crude oil tank 10 is flushed in the same injection distance D while rotating the injection nozzle 20 in the horizontal direction (X axis) do.

Here, in the injection range determination step S60, it is determined whether the injection distance D in accordance with the rotation in the horizontal direction (X axis) is within the injection range in real time.

Here, it is judged whether or not the condition of the above-mentioned expression (11) is satisfied.

If it is determined in step S60 that the cleaning liquid is to be sprayed in the spraying range in step S70, it is determined whether the spray position of the cleaning liquid corresponds to the end position. Here, if it is determined that the injection position of the cleaning liquid corresponds to the end position, the cleaning operation is completed.

Referring to FIG. 5, the end position E may be set to a predetermined distance based on a point at which the distance from the first manhole 11 in the crude oil tank 10 is the largest. This can be set as an area having a predetermined size, in consideration of the error level of the ejection distance.

If it is determined in step S70 that the injection position of the cleaning liquid does not correspond to the end position, it is determined whether the cleaning is completed at the current injection distance. At this time, the completion is determined when there is no angle at which the current injection range and injection distance are not rotated any more.

If it is determined that the cleaning operation has not been completed at the present distance, the process returns to step S50 to return the injection nozzle 20 to the left or right in the horizontal direction (X axis) Clean the bottom surface within the same spray distance (D).

Thereafter, in step S90, if it is determined that the cleaning is completed at the distance currently being sprayed in step S80, the spray distance D of the cleaning liquid is increased.

)를 증가시킨다. 1회의 분사 각도(

) 증가량은 기설정된 일정한 값이며, 증가량을 크게 할수록 전체 세척 작업 시간의 단축이 가능하지만, 세척 작업의 완성도는 떨어질 수 있으니, 최적 증가량으로 설정될 수 있다.Here, the method of increasing the spraying distance D is a method of increasing the spraying angle D in the vertical direction (Y-axis) as shown in the above-

). One injection angle (

) Increase amount is a preset constant value. The larger the increase amount, the shorter the entire cleaning operation time, but the cleaning operation can be completed, so that the optimum increase amount can be set.

If the jetting distance D of the washing liquid is increased in step S90, the flow returns to step S50 to rotate the jetting nozzle 20 to the left or right in the horizontal direction (X axis) ) Is cleaned in the same injection distance (D).

On the other hand, if it is determined in step S60 that the cleaning liquid is not sprayed within the spray range in step S100, the spray distance D of the cleaning liquid is decreased.

)를 감소시킨다. 1회의 분사 각도(

) 감소량은 기설정된 일정한 값이며, 상술한 1회의 분사 각도(

) 증가량보다는 작은 값으로 설정되는 것이 바람직하다.Here, the method of reducing the ejection distance D is a method of reducing the ejection angle (in the vertical direction

). One injection angle (

) Is a predetermined constant value, and the above-described one injection angle (

) Increase amount.

Although the present invention has been described in connection with what is presently considered to be preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

10: Crude oil tank 20: Injection nozzle
30: pressure pump 40:
50: Power supply unit 60: Vacuum pump
61: Vacuum tank 62: Suction pipe
100: Crude oil tank automatic cleaning device
200:

Claims (8)

delete delete delete An automatic crude oil tank cleaning apparatus for cleaning a crude oil tank,
A first manhole and a second manhole formed on a side surface of the crude oil tank;
A spray nozzle inserted in the first manhole of the crude oil tank and rotatable in a horizontal direction (X axis) and a vertical direction (Y axis);
A pressurizing pump connected to the spray nozzle and supplying the wash liquid to the spray nozzle;
A control unit for controlling an operation of the injection nozzle;
A power supply for supplying power to the injection nozzle;
A suction pipe inserted into the second manhole of the crude oil tank; And
A vacuum pump connected to the suction pipe; And
A display unit connected to the control unit; Lt; / RTI &gt;
The control unit determines the spraying distance D along the spraying direction and the spraying direction (X axis and Y axis) of the washing liquid sprayed from the spraying nozzle and controls the rotating operation of the spraying nozzle to automatically .
Wherein the display unit outputs cleaning sign information and cleaning operation information according to the spray distance and the spray direction of the wash water,
The work site is divided into a work area and a safety area,
One end of the crude oil tank, the injection nozzle and the suction pipe is disposed in the working space,
Wherein the pressure pump, the control unit, the power supply unit, the vacuum pump, and the display unit are disposed in the safe zone.
A first step of measuring an initial injection speed V0 of a cleaning liquid injected from the injection nozzle;
A second step of injecting the injection nozzle into a first manhole of the crude oil tank;
A third step of aligning the injection nozzle to a set initial position;
A fourth step of operating the pressurizing pump and the vacuum pump;
A fifth step of rotating the injection nozzle in a horizontal direction (X-axis) in a leftward direction and a rightward direction;
A sixth step of determining whether a spraying distance of the washing solution sprayed from the spraying nozzle is within the spraying range of the crude oil tank;
A seventh step of determining whether the spraying distance of the washing liquid corresponds to the set end position when the spraying distance of the washing liquid is within the spraying range;
An eighth step of judging whether the cleaning is completed within the spraying distance of the washing liquid when the spraying distance of the washing liquid does not correspond to the set end position;
A ninth step of increasing the ejection distance by a predetermined distance when the washing operation is completed within the washing liquid ejection distance and returning to the fifth step; And
A tenth step of reducing the jetting distance by a predetermined distance when the jetting distance of the washing liquid is not within the jetting range, and returning to the sixth step; Wherein the automatic tank cleaning device comprises:
5. The method of claim 4,
In the first step,
The initial injection velocity V ₀ of the cleaning liquid is calculated through the following equation (1), and the nozzle is horizontally moved in the vertical direction (Y axis)

= 0). The automatic cleaning method using the automatic crude oil tank cleaning apparatus according to claim 1,
[Equation 1]

(Where D is the spray distance of the washer fluid,

The vertical rotation angle of the nozzle,

The initial injection speed,

Gravity acceleration,

Represents the installation height of the nozzle.)
5. The method of claim 4,
In the sixth step,
Wherein when the condition of the following formula (2) is satisfied, it is determined whether the spraying distance of the washing liquid is within the spraying range in the crude oil tank.
&Quot; (2) &quot;

(Where D is the spray distance of the washer fluid,

Is the horizontal rotation angle of the nozzle, and r is the radius of the crude oil tank.)
5. The method of claim 4,
An eleventh step of displaying washing sign information and washing operation information according to the spraying distance and the spraying direction of the washing solution through a display unit connected to the control unit; Further comprising the step of automatically cleaning the crude oil tank.
5. The method of claim 4,
In the seventh step,
Wherein the end position is set to a predetermined distance based on a point at which the distance from the first manhole is the largest in the crude oil tank.

Images