KR20240033434A - Non-entry type Water-Jet Cleaning Method for Pressure Vessel and Storage Tank - Google Patents

Abstract

The present invention relates to a non-invasive water jet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety and a cleaning method using the same. A preparation step (S10) of selecting a work section of a pressure vessel or storage tank to be cleaned; Setting a drain outlet at the lower part of a large pressure vessel or storage tank within the work section (S20); Installing a workbench at the top of the work section (S30); A step of measuring the degree of contamination inside the work container by photographing the internal state of the work section and confirming work stability (S40); Installing the non-entry type water jet cleaning device in the pressure vessel or storage tank through the hatch (S50); Connecting the non-entry-type water jet cleaning device and the ultra-high pressure washing water generating device through a supply pipe (S60); Installing a drain outlet in the drain branch (S70); A step (S80) of generating ultra-high-pressure washing water through the ultra-high-pressure washing water generator and spraying close-up high-pressure washing water through a spray nozzle of the non-granular water jet cleaning device to clean the inside of the work section (S80); After completing cleaning, re-photographing and inspecting the work tool to determine whether cleaning of the inside of the work container has been completed (S90); And when it is determined that the internal cleaning of the work section is completed, restoring the work section (S100).

Description

High-pressure industrial cleaning method for pressure vessels and storage tanks using a non-entry type water-jet cleaning device {Non-entry type Water-Jet Cleaning Method for Pressure Vessel and Storage Tank}

The present invention relates to a high-pressure industrial cleaning method for pressure vessels and storage tanks using a non-immersive water jet cleaning device. More specifically, it is fixed to the pressure vessel hatch and secures worker safety by ensuring safety during high-pressure cleaning work through external work. At the same time, it relates to a high-pressure industrial cleaning method for pressure vessels and storage tanks using a non-invasive water jet cleaning device that can clean the inside of the pressure vessel through effective spraying.

In February 2022, business owners, management managers, public officials and corporations who caused casualties by violating safety and health measures while operating businesses, workplaces, public facilities and public transportation, or handling raw materials or products harmful to the human body. The Serious Accident Act came into effect with the purpose of preventing serious disasters and protecting the lives and bodies of citizens and workers by stipulating punishments, etc. Accordingly, employers must pay special attention to worker safety management. If the safety of workers is not secured at an industrial site, it is difficult to receive orders for plant facility cleaning work.

Therefore, there is a need for professional construction companies to develop preemptive safety systems and build equipment.

Meanwhile, in general, a high-pressure washer drives a pump with a motor to spray a mixture of high-pressure water and a chemical solution onto objects to be disinfected or cleaned. The high-pressure washer is used for spraying pesticides on crops, washing wheels at construction sites, etc. Cleaning work at food processing sites, disinfection of various wastes in livestock farms, repair and cleaning of ships, vehicle washing, removal of grease at maintenance plants, cleaning of tanks and heat exchangers at chemical plants, removal of adhesive advertisements, plastic boxes at food and beverage companies. The scope of its use is very wide, including cleaning.

High-pressure washers are essentially provided with a spray device capable of spraying water at high pressure, and the spray device is provided in various configurations.

However, since safety accidents cannot be prevented with these spraying devices alone, there is a need for a spraying device that can provide worker safety.

Republic of Korea Patent Publication No. 10-2013-0001043

The purpose of the present invention is to secure the safety of workers by securing safety during high-pressure cleaning work through external work by fixing it to the pressure vessel hatch, and at the same time, to clean the inside of the pressure vessel through effective spraying. It provides a high-pressure industrial cleaning method for pressure vessels and storage tanks using .

The purpose of the present invention is not limited to the purposes mentioned above, and other purposes not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the following description.

In order to achieve the above object, in the high-pressure industrial cleaning method for pressure vessels and storage tanks using a non-granular water jet cleaning device according to an embodiment of the present invention, a preparatory step of selecting the work section of the pressure vessel or storage tank to be cleaned (S10); Setting a drain outlet at the lower part of a large pressure vessel or storage tank within the work section (S20); Installing a workbench at the top of the work section (S30); A step of measuring the degree of contamination inside the work container by photographing the internal state of the work section and confirming work stability (S40); Installing the non-entry type water jet cleaning device in the pressure vessel or storage tank through the hatch (S50); Connecting the non-entry-type water jet cleaning device and the ultra-high pressure washing water generating device through a supply pipe (S60); Installing a drain outlet in the drain branch (S70); A step (S80) of generating ultra-high-pressure washing water through the ultra-high-pressure washing water generator and spraying close-up high-pressure washing water through a spray nozzle of the non-granular water jet cleaning device to clean the inside of the work section (S80); After completing cleaning, re-photographing and inspecting the work tool to determine whether cleaning of the inside of the work container has been completed (S90); And when it is determined that the internal cleaning of the work section is completed, restoring the work section (S100).

Here, an endoscope camera and a harmful gas measuring device may be used to photograph and inspect the inside of the work section.

The high-pressure industrial cleaning method for pressure vessels and storage tanks using a non-immersive water jet cleaning device according to the present invention secures worker safety by securing safety during high-pressure cleaning work through external work by fixing it to the pressure vessel hatch and at the same time provides effective spraying. Through this, the inside of the pressure vessel can be cleaned and industrially cleaned.

In particular, the present invention can protect workers from safety accidents and ensure safety because cleaning work is not performed while the worker directly enters the interior.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is a diagram of a non-entry-type waterjet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention.
Figure 2 is a perspective view of a non-entry-type waterjet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention.
Figure 3 is a detailed operational view of the fixed coupling part.
Figure 4 is a detailed view of the operation of the injection unit.
Figure 5 is a detailed view of the combination of square pipe tubes.
Figure 6 is a perspective view of a non-granular water jet cleaning device for cleaning a storage tank according to an embodiment of the present invention rotated by 90 degrees.
Figure 7 is an analysis diagram showing the results of structural analysis of a non-entry-type waterjet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention.
Figure 8 is a flowchart of the cleaning method of a non-entry-type waterjet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. These embodiments only serve to ensure that the disclosure of the present invention is complete and to convey the scope of the invention to those skilled in the art. It is provided for complete information. In the drawings, like symbols refer to like elements.

When adding reference numerals to components in each drawing, it should be noted that the same components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

Figure 1 is a diagram of a non-entry-type waterjet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention, and Figure 2 is a diagram of a pressure vessel and storage tank for ensuring worker safety according to an embodiment of the present invention. It is a perspective view of a non-granular water jet cleaning device for cleaning a storage tank, Figure 3 is a detailed view of the operation of the fixed joint, Figure 4 is a detailed view of the operation of the spray section, Figure 5 is a detailed view of the combination of the square pipe tube, and Figure 6 is a detailed view of the connection of the square tube. A perspective view of the non-entry tank type waterjet cleaning device for cleaning storage tanks according to an embodiment of the invention is rotated 90 degrees, and Figure 7 is a non-entry tank for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention. This is an analysis drawing showing the structural analysis results of the waterjet cleaning device.

1 to 7, the non-enclosed water jet cleaning device 100 for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention includes a fixed coupling portion 110 and a square pipe tube ( 120) and a spray unit 130, and is characterized in that the cleaning operation is not performed while the worker directly enters the inside, but is operated from the outside, thereby preventing safety accidents for workers. The structure is explained in more detail below.

The fixed coupler 110 is fixed to the top hatch (H) of the pressure vessel (PV) and may be provided with a bearing ball joint 111 and a ball joint guide 112.

The bearing ball joint 111 has an outer peripheral surface formed in a spherical shape, a through hole is formed so that the inner peripheral surface corresponds to the outer peripheral surface of the square pipe tube 120, and the upper end is connected to the multi connection hole 126 of the square pipe tube 120. At least one fixing hole 1111 is formed and coupled to the outer peripheral surface of the square tube 120. In the present invention, the fixing holes 1111 are formed on each peripheral surface formed of a square pipe, and can maintain a stable coupling state with the fixing holes 1111. Here, if the inner peripheral surface of the bearing ball joint 111 is formed as a square tube as in the present invention, rotation of the square tube tube 120 coupled to the bearing ball joint 111 can be prevented and a stable fixed state can be maintained.

At this time, the outer circumferential shape of the bearing ball joint 111 may not be formed in a perfect spherical shape like a ball, but may be formed in a spherical shape elongated in the vertical direction. When formed in this way, it is possible to form a structure that can be rotated within the range of 75 to 105 degrees inside the ball joint guide 112, which will be described later.

The ball joint guide 112 is formed so that its outer peripheral surface is coupled to the hole formed at the top of the hatch (H), and its inner peripheral surface is formed to correspond to the outer peripheral surface of the sliding bearing ball joint 111 to rotate the sliding bearing ball joint 111. The spray angle of the spray unit 130 can be adjusted by guiding the angle and adjusting the angle of the square tube 120. In addition, the ball joint guide 112 is formed in a structure of two disks, and is formed in a laminated structure and coupled to surround the sliding bearing ball joint 111, thereby preventing the sliding bearing ball joint 111 from being separated. A stable bonding state can be maintained.

The square tube 120 is formed in a bar shape and connected to the fixed coupling part 110, and is placed in the inner cylinder of the pressure vessel (PV) so that the length can be adjusted in the axial direction, and is connected to the high pressure hose 121 and the connection hole. (122), an adjustment handle 123, a guide tool 124, and an extension tool 125 may be provided.

The high-pressure hose 121 provides fluid, and is disposed along the square tube 120 and connected to the spray nozzle 131. The fluid will typically be water. Since the pressure vessel (PV) is generally curved in a hemispherical shape on the upper and lower sides and can be opened, contaminants after washing can be naturally induced and drained, and separate hydraulic pressure for removal is required to remove the water remaining inside. No need for a hose.

A plurality of connection holes 122 may be formed along the outer peripheral surface at predetermined intervals along the longitudinal direction of the square pipe tube 120.

The adjustment handle 123 is coupled to the top of the square tube 120 so that the operator can adjust the spray direction of the square tube 120 from the outside. The adjustment handle 123 is connected to the top of the square tube 120, and the coupling position can be adjusted considering the length of the square tube 120 exposed outside the pressure vessel (PV). Since the adjustment handle 123 has protrusions formed at 90-degree intervals so that the user can easily rotate it, the user can continuously rotate the adjustment handle. In addition, the control handle 123 is connected to a drive motor (not shown) and automatically rotates at a constant rate according to a preset time, thereby cleaning the inside evenly.

Therefore, the square tube 120 can be rotated as shown in FIG. 5 through the adjustment handle 123. Figure 5 shows that the square tube 120 has been rotated by 90 degrees, and is an example showing that the high pressure injection device 10 has been rotated by 90 degrees and moved to the position 10a to 10d. However, the rotation angle is not limited to 90 degrees, and the operator can adjust it to various rotation angles considering the size and conditions of the pressure vessel (PV).

The guide holes 124 are formed on both sides of the longitudinal end of the square tube 120, and are formed adjacent to each other to protrude from the square tube 120 in pairs. The guide tool 124 has the feature of being able to more stably guide the rotation of the angle adjuster 133 by being combined with the arc slit hole 1331, which will be described later.

The extension 125 serves to extend the length of the square tube 120 by connecting the two square tubes 120a and 120b to each other. The extension 125 is formed with a plurality of holes, and corresponding holes are formed in the square pipe tubes 120a and 120b to provide a firm connection.

The multi-connection hole 126 may be formed in each of the square pipe tubes 120a and 120b, and the coupling position of the fixed coupling portion 110 or the adjustment handle 123 can be selectively adjusted through the multi-connection hole 126. You can.

The injection unit 130 is connected to the end of the square tube 120, extends along the longitudinal direction, and has a high pressure hose 121 extended therein and disposed in one direction. The spray unit 130 has a plurality of holes formed along the longitudinal direction and is rotatably coupled to the end of the square tube 120 to spray high-pressure water to clean the inner peripheral surface of the pressure vessel (PV). It may be provided with a spray nozzle 131, a gap maintainer 132, and an angle adjuster 133.

The spray nozzle 131 is disposed at the end of the spray unit 130 and sprays high-pressure water on the inner peripheral surface of the pressure vessel (PV). It is desirable that the injection pressure of the injection nozzle 131 is adjustable, and by adjusting the injection pressure, the pressure can be adjusted according to the condition of the inner peripheral surface of the pressure vessel (PV) to ensure effective cleaning.

The gap maintenance tool 132 is coupled to the spray unit 130 so that the spray nozzles 131 do not contact each other and maintain a constant gap. At this time, the gap maintainer 132 may have an approximate shape of a 'ㄷ' shape. In addition, the gap maintenance device 132 may be provided with a damage prevention portion 1321 made of a soft material such as rubber at the end. Through this, damage can be prevented even if the end of the gap maintainer 132 comes into contact with the inner peripheral surface of the pressure vessel (PV).

Additionally, a buffer portion 1322 may be further provided in the middle extending along one direction. The buffer portion 1322 may be formed in a spring-like structure, and prevents shock from being transmitted along with the damage prevention portion 1321 to the inner peripheral surface of the pressure vessel (PV) due to the operator's inexperience during operation of the square pipe tube 120. By doing so, internal damage to the pressure vessel (PV) that can occur during industrial cleaning can be fundamentally prevented.

The angle adjuster 133 is capable of selectively adjusting the position of the injection unit 130 coupled to a plurality of holes 1301 along one direction, and is formed in the shape of a pair of flat plates, one end of which is attached to the square pipe tube 120. It is rotatably coupled to both sides, and the lower side is connected to cover the lower side of the injection unit 130, and the coupling position can be selectively adjusted to a plurality of holes 1301 along one direction. Through this, the spray angle of the spray nozzle 131 can be rotated horizontally, vertically, and at any angle desired by the operator. At this time, the angle adjuster 133 may have an arc slit hole 1331 formed in an arc shape on each of a pair of flat plates. When the circular slit hole 1331 is combined with the guide tool 124, it can be guided to rotate, providing various angle adjustments. Additionally, a horizontal slot hole 1332 may be provided. The horizontal slot hole 1332 can facilitate screw fastening so that the overall assembly state can be maintained stably.

Referring to FIG. 7, as a result of examining the non-entry water jet cleaning device 100 for cleaning pressure vessels and storage tanks to ensure worker safety according to the present invention through precise analysis, large displacement occurs even under high pressure. Distribution was also found to be safe.

Using FIGS. 1 to 6 , the operating state of the pressure vessel cleaning system 10 equipped with a high-pressure spray device to ensure worker safety will be described in more detail.

First, in the present invention, the water jet cleaning device 100 for cleaning without a tank can be coupled to the top hatch (H) of the pressure vessel (PV), as shown in FIGS. 1 to 6. Next, the water jet cleaning device 100, a non-entry-type cleaning device, may rotate along the circumferential direction of the pressure vessel (PV) while being fixed to the hatch (H). At this time, the square tube 120 of the non-entry-type waterjet cleaning device 100 can be rotated at a predetermined angle through the fixed joint 110, and the worker shown in Figure 1b opens the upper hatch of the pressure vessel (PV). When combined with H), you can work safely by holding the adjustment handle (123) while standing stably on the footrest.

In addition, the spray unit 130 of the pressure vessel cleaning system 10 equipped with a high-pressure spray device to ensure worker safety can be rotated 90 degrees toward the bottom as shown in (b) of FIG. 4, so the pressure vessel (PV) The underside of the product can be effectively industrially cleaned. On the other hand, the conventional nozzle (b) shown in Figure 1 (b) can only rotate up and down along the circumferential surface, making it difficult to industrially clean the lower and upper surfaces, and the structure (a) of the cleaning equipment is large. Therefore, there is a risk of a disaster occurring due to a safety accident during the process of attaching and detaching the hatch of the pressure vessel (PV).

However, the pressure vessel cleaning system 10, which is equipped with a high-pressure spray device to ensure worker safety according to the present invention, is small in volume and easy to carry by the worker, so it is safe from safety accidents when attaching and detaching it from the hatch of the pressure vessel (PV). Industrial accidents can be prevented through the advantage of having a very low risk of occurrence.

Figure 8 is a flowchart of the cleaning method of a non-entry-type waterjet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention.

Referring to FIG. 8, the cleaning method of the non-entry-type waterjet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety according to an embodiment of the present invention may be performed in the following order.

First, prepare to select the work section of the pressure vessel or storage tank to be cleaned (S10).

Set a drain outlet at the bottom of the large pressure vessel or storage tank within the work section (S20).

Install a workbench at the top of the work section. (S30)

The internal state of the work section is photographed to measure the degree of contamination inside the work container and check work stability (S40).

Install the non-immersive water jet cleaning device in the pressure vessel or storage tank through the hatch (S50).

Connect the non-immersive water jet cleaning device and the ultra-high pressure cleaning water generator through a supply pipe (S60).

Install a drain port in the drain outlet (S70).

Ultra-high-pressure cleaning water is generated through an ultra-high-pressure cleaning water generator, and the adjacent high-pressure cleaning water is sprayed through the spray nozzle of the non-entrying water jet cleaning device to clean the inside of the work area (S80).

After completing cleaning, rephotograph and inspect the work tool to determine whether cleaning inside the work container has been completed (S90).

When it is determined that the internal cleaning of the work section has been completed, a step (S100) of restoring the work section is included.

At this time, photographing and inspecting the inside of the work zone can be done with an endoscope camera and a harmful gas measuring device.

The high-pressure industrial cleaning method for pressure vessels and storage tanks using a non-immersive water jet cleaning device according to the present invention secures worker safety by securing safety during high-pressure cleaning work through external work by fixing it to the pressure vessel hatch and at the same time provides effective spraying. Through this, the inside of the pressure vessel can be cleaned and industrially cleaned.

In particular, the present invention can protect workers from safety accidents and ensure safety because cleaning work is not performed while the worker directly enters the interior.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

10: high pressure injection device system 100: high pressure injection device
110: fixed joint 111: bearing ball joint
112: Ball joint guide 120: Square pipe tube
121: high pressure hose 122: connection hole
123: Adjustment handle 124: Guide hole
125: Tool 130: Spray unit
131: spray nozzle 132: gap maintenance device
133: Angle adjuster

Claims (3)

In a cleaning method using a non-entry water jet cleaning device for cleaning pressure vessels and storage tanks to ensure worker safety,
Preparatory step (S10) for selecting the work section of the pressure vessel or storage tank to be cleaned;
Setting a drain outlet at the lower part of a large pressure vessel or storage tank within the work section (S20);
Installing a workbench at the top of the work section (S30);
A step of measuring the degree of contamination inside the work container by photographing the internal state of the work section and confirming work stability (S40);
Installing the non-entry type water jet cleaning device in the pressure vessel or storage tank through the hatch (S50);
Connecting the non-entry-type water jet cleaning device and the ultra-high pressure washing water generating device through a supply pipe (S60);
Installing a drain outlet in the drain branch (S70);
A step (S80) of generating ultra-high-pressure washing water through the ultra-high-pressure washing water generator and spraying close-up high-pressure washing water through a spray nozzle of the non-granular water jet cleaning device to clean the inside of the work section (S80);
After completing cleaning, re-photographing and inspecting the work tool to determine whether cleaning of the inside of the work container has been completed (S90); and
When it is determined that the internal cleaning of the work section is completed, a step (S100) of restoring the work section. A cleaning method using a non-entry water jet cleaning device.
According to paragraph 1,
A cleaning method using a non-invasive water jet cleaning device, characterized in that an endoscope camera and a harmful gas measuring device are used to photograph and inspect the inside of the work section.
According to paragraph 1,
The waterjet cleaning device,
A fixed coupling portion 110 fixed to the top hatch (H) of the pressure vessel (PV);
A square tube 120 formed in a bar shape, connected to the fixed coupling portion 110, and disposed in the axial direction of the inner cylinder of the pressure vessel (PV); and
A spray unit 130 that is coupled to the end of the square tube 120, extends toward the inner peripheral surface of the pressure vessel (PV), and includes a spray nozzle 131 that sprays the inner peripheral surface of the pressure vessel (PV) at high pressure; A cleaning method using a non-entry water jet cleaning device comprising: