KR102539403B1 - Dry type cleaning apparatus of plate heat exchanger - Google Patents

Abstract

Disclosed is a dry pipe cleaning apparatus of a plate heat exchanger, for cleaning a contaminant on a heat transfer plate. The dry pipe cleaning apparatus of the plate heat exchanger of the present invention comprises: a heat transfer plate transfer unit which transfers the heat transfer plate in one direction; a laser irradiation unit which irradiates a laser to remove a contaminant on the front surface or the back surface of the heat transfer plate; and a driving module on which the laser irradiation unit is installed and for moving the laser irradiation unit so that the laser irradiation unit irradiates the laser to a preset area of the heat transfer plate.

Description

Dry type custom tube device of plate heat exchanger {DRY TYPE CLEANING APPARATUS OF PLATE HEAT EXCHANGER}

The present invention relates to a dry tubular device for a plate heat exchanger.

The plate heat exchanger is a device that manages heat generated in all industrial fields and daily life, and it is important to maintain the efficiency of thermal energy.

The plate heat exchanger has a structure in which heat transfer plates are laminated, and a flow path is formed between the heat transfer plates. It is a structure in which the hot fluid and the cold fluid flow convectively in this flow path to transfer heat.

Over time, deposits or impurities in the heat transfer plate hinder the flow of fluid, reducing heat transfer efficiency. When acid/alkaline cleaning or high-pressure cleaning is performed to remove deposits or impurities in the fluid, industrial wastewater is generated. , a device for customizing the heat exchanger in a dry manner is required.

Meanwhile, a device capable of recognizing the state of the heat transfer plate is required to automatically control the heat transfer plate of the heat exchanger.

In addition, in the case of using the laser tube, physical properties such as specific heat and heat transfer of the base material and the scale affect the result of the laser tube, so a technique for removing only the scale while minimizing thermal deformation or damage to the base material is required. .

A problem to be solved according to an embodiment of the present invention includes customizing a heat exchanger in a dry manner using a laser source.

In addition, it includes recognizing the state of the heat transfer plate using a stereo camera, and automatically customizing the heat transfer plate.

In addition, it includes removing only the scale while minimizing thermal deformation or damage to the base material using an orthogonal robot driven based on the state of the heat transfer plate.

The technical problem to be achieved by the present invention is not limited to the above-mentioned technical problem, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

In order to solve the above problems, a dry customs tube device of a plate type heat exchanger for washing contaminants on a heat transfer plate according to an aspect of the present invention includes a heat transfer plate transfer unit for transferring the heat transfer plate in one direction, and the contaminants on the front or rear surface of the heat transfer plate. A laser irradiation unit for radiating a laser to remove the laser and the laser irradiation unit are installed, and a driving module for moving the laser irradiation unit so that the laser irradiation unit radiates a laser to a predetermined area of the heat transfer plate.

In addition, an image acquisition unit for acquiring customs range data for the customs tube of the heat transfer plate based on an image of the heat transfer plate and a control for controlling the irradiation degree of the laser irradiation unit and the driving module based on the customs range data. A control unit generating a message may be further included.

Here, the heat transfer plate transfer unit may include a pair of clamp belts fixing both sides of the heat transfer plate and a driving motor connected to one end of the clamp belt to provide power to move the heat transfer plate in one direction.

Here, the image acquiring unit may acquire coordinate information of a point where the contaminant is located in an image of the heat transfer plate.

Here, the image acquisition unit may generate a depth map based on a photographed image of the heat transfer plate.

Here, the control unit may determine a position and movement range of the laser irradiation unit to irradiate the laser to the heat transfer plate based on the obtained coordinate information.

Here, the control unit may determine an output of the laser irradiation unit based on the generated depth map.

Here, the control unit may determine a moving speed of the driving module based on the generated depth map.

In addition, the laser irradiation unit may further include a roller unit for removing dust and foreign substances from the heat transfer plate to which the laser is irradiated.

Here, the laser irradiation unit includes a handle on one side, and may be installed to be detachable from the driving module.

As described above, according to the embodiments and various aspects of the present invention, the heat transfer plate of the heat exchanger can be automatically cleaned in a dry manner by recognizing the state of the heat transfer plate.

In addition, only scale can be removed while minimizing thermal deformation or damage to the base material.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the description of the present invention or the configuration of the invention described in the claims.

1 is a view showing a dry tubular device of a plate heat exchanger according to an embodiment of the present invention.
2 is a block diagram showing a dry tubular device of a plate heat exchanger according to an embodiment of the present invention.
3 illustrates a heat transfer plate for using a dry tube device of a plate heat exchanger according to an embodiment of the present invention as an example.
4 is a view showing a laser irradiation unit of a dry custom tube device of a plate heat exchanger according to an embodiment of the present invention.
5 is a view showing a driving module of a dry tubular device of a plate type heat exchanger according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and, therefore, is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, combined)" with another part, this is not only "directly connected", but also "indirectly connected" with another member in between. "Including cases where In addition, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

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

One embodiment of the present invention relates to a dry tubular arrangement of a plate heat exchanger.

1 is a view showing a dry tubular device of a plate heat exchanger according to an embodiment of the present invention.

Referring to FIG. 1 , a dry custom tube device 10 of a plate heat exchanger according to an embodiment of the present invention includes a heat transfer plate transfer unit 100, a laser irradiation unit 200, a driving module 300, an image acquisition unit 400, It includes a control unit 500 and a roller unit 600.

The dry custom tube device 10 of the plate heat exchanger according to an embodiment of the present invention is a device for cleaning contaminants from heat transfer plates of the plate heat exchanger.

Unlike conventional laser cleaners that only clean rust or oil-based areas, it is possible to remove scale fronts of various fluids on heat transfer plates of various sizes by expanding the cleaning range of the irradiation unit by using an orthogonal robot.

The dry custom tube device 10 of the plate heat exchanger according to an embodiment of the present invention is an automated in-line system and may be composed of transfer, measurement, custom tube, and post-processing parts.

The heat transfer plate transfer unit 100 transfers the heat transfer plate 20 in one direction.

The heat transfer plate transfer unit 100 includes a pair of clamp belts 110a and 110b and a driving motor 120 .

The clamp belts 110a and 110b fix both sides of the heat transfer plate and may serve as a work table suitable for the tubes of the heat transfer plate.

The clamp belts 110a and 110b according to an embodiment of the present invention may be composed of stainless steel chains that are less abraded and thermally deformed even when laser cleaning is continuously irradiated.

The pair of clamp belts 110a and 110b of the heat transfer plate transfer unit 100 according to an embodiment of the present invention are provided to adjust the distance between the clamp belts 110a and 110b, even if the size of the heat transfer plates 20 is different. , By adjusting the distance between the clamp belts 110a and 110b, it is possible to transfer the heat transfer plate 20 while fixing both sides.

Accordingly, it is easy to remove scale deposited on both sides of the heat transfer plate, and heat transfer plates of various sizes can be transferred.

The driving motor 120 is connected to one end of the clamp belt and provides power to move the heat transfer plate in one direction.

The laser irradiator 200 irradiates a laser to remove contaminants from the front or rear surface of the heat transfer plate 20 .

The laser irradiator 200 includes a handle 210 on one side and is installed to be detachable from the driving module.

The laser source irradiated from the laser irradiation unit 200 emits light for a short moment that can improve the workability of scale removal while minimizing thermal deformation or damage to the 0.5t thin metal (stainless, titanium, hastelloy, etc.) base material. A pulse type laser that can increase the peak power can be applied.

In addition, a lens having a laser light width of 250 mm to 350 mm may be included so that a large work area can be digested.

In addition, it may include a laser irradiation system 220 that receives a control message for controlling the irradiation degree of the laser irradiation unit from the control unit 500 to be described later.

The driving module 300 has the laser irradiation unit 200 installed, and moves the laser irradiation unit so that the laser irradiation unit radiates laser to a predetermined area of the heat transfer plate 20 .

The driving module 300 may be a cartesian robot, and a working range, laser irradiation unit height, power, and movement speed may be adjusted according to the collected data.

The image acquisition unit 400 acquires customs range data for the customs of the heat transfer plate based on the photographed image of the heat transfer plate.

Specifically, the image acquisition unit 400 may be configured as a stereo vision unit of two or more cameras forming an epipolar line, and determines a location and a cleaning range by recognizing corner feature points of the heat transfer plate.

Here, the customs range data may include corner feature point coordinates and a disparity depth map of stereo vision, which is thickness data of a scale.

The control unit 500 generates a control message for controlling the irradiation degree of the laser irradiator and the driving module based on the customs range data.

Specifically, the control unit 500 utilizes the disparity map information to measure the non-uniform scale thickness of each part to adjust information on the power and speed of the laser required for cleaning, and to adjust the focal distance with the laser emitter. Acquired, can maintain proper pitch.

In addition, after laser cleaning, the control unit 500 additionally recognizes feature points through the image acquisition unit 400, checks only the partial area that is not customs, generates a control message for re-customs, and transmits it to the laser irradiation unit. .

The image acquisition unit 400 and the control unit 500 will be described in detail in FIG. 2 below.

The roller unit 600 is provided at one end of the heat transfer plate transfer unit 100 and removes dust and foreign matter from the heat transfer plate irradiated with laser by the laser irradiation unit.

The roller unit 600 includes a silicon roller brush 610 capable of cleaning both sides of the heat transfer plate, and can remove dust and foreign matter from the heat transfer plate passing through the roller brush 610 .

In addition, the roller unit 600 may include a brush rotation module 620 that is connected to the roller brush 610 and can rotate the roller brush 610 .

2 is a block diagram showing a dry tubular device of a plate heat exchanger according to an embodiment of the present invention.

Referring to FIG. 2 , the dry custom tube device 10 of the plate heat exchanger according to an embodiment of the present invention includes a heat transfer plate transfer unit 100, a laser irradiation unit 200, a driving module 300, an image acquisition unit 400, and A control unit 500 is included.

The image acquiring unit 400 of the dry custom tube device 10 of the plate type heat exchanger according to an embodiment of the present invention acquires customs range data for the customs of the heat exchanger plate based on a photographed image of the heat exchanger plate.

The control unit 500 generates a control message for controlling the irradiation degree of the laser irradiator and the driving module based on the customs range data.

The controller 500 includes a processor 510, a memory 520 and a communication unit 530.

Specifically, when the image acquisition unit 400 obtains coordinate information of a point where a contaminant is located in an image of a photographed heat transfer plate and transmits the information to the control unit 500, the processor 510 of the control unit 500, Based on the coordinate information, it is possible to determine the location and movement range of the laser irradiation unit to irradiate the laser to the heat transfer plate.

When the processor 510 of the control unit 500 determines the position and movement range of the laser irradiator, generates a control message, and transmits it to the driving module 300, the driving module 300 receives the control message and receives the control message to the corresponding position. The driving module 300 is controlled so that the laser irradiation unit 200 can be moved.

Meanwhile, when the image acquisition unit 400 generates a depth map based on a photographed image of the heat transfer plate, the processor 510 of the controller 500 may determine an output of the laser irradiation unit based on the generated depth map. there is.

When the processor 510 of the control unit 500 determines the output of the laser emitter, generates a control message, and transmits it to the laser emitter 200, the laser emitter 200 receives the control message and outputs for irradiating the laser. By setting the value, the laser can be irradiated to the heat transfer plate.

For example, the laser power, frequency, and size of light can be adjusted with output values.

Also, the processor 510 of the controller 500 may determine the movement speed of the driving module based on the generated depth map.

When the processor 510 of the control unit 500 determines the movement speed of the driving module, generates a control message, and transmits it to the driving module 300, the driving module 300 receives the control message and sets the corresponding movement speed. The driving module 300 is controlled.

In addition, the processor 510 of the control unit 500 may adjust the speed of the driving motor of the heat exchanger plate transfer unit 100 according to a speed convenient for scale removal.

The memory 520 stores data acquired from the image acquisition unit 400, and is of a flash memory type, a hard disk type, a multimedia card micro type, or a card type. of memory (eg, SD or XD memory, etc.), RAM (Random Access Memory, RAM), SRAM (Static Random Access Memory), ROM (Read-Only Memory, ROM), EEPROM (Electrically Erasable Programmable Read-Only Memory) ), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk may include at least one type of computer readable storage medium.

The communication unit 530 may transmit the generated control message to the laser irradiation unit 200 and the driving module 300 and may transmit a setting result to an external user.

3 illustrates a heat transfer plate for using a dry tube device of a plate heat exchanger according to an embodiment of the present invention as an example.

Referring to FIG. 3, the heat transfer plate 20 for using the dry tube device of the plate type heat exchanger includes contaminants C1, C2, and C3 inside, and each contaminant C1, C2, and C3 is different from each other of the heat transfer plate. It may be located in a location, and the degree of contamination may be formed differently.

Accordingly, the image acquisition unit 400 acquires customs range data for the customs of the heat transfer plate based on the image of the heat transfer plate, and coordinates of corner feature points where the contaminants C1, C2, and C3 are located and the degree of contamination of the contaminants. A disparity depth map of stereo vision, which is thickness data of a scale according to , is acquired.

Then, the control unit 500 generates a control message for controlling the irradiation degree of the laser irradiation unit and the driving module based on the customs range data.

The image acquisition unit 400 may include a stereo camera. A stereo camera composed of two pairs of lenses uses the corresponding point pixel coordinates (x, y) find a relationship Find corner feature points from the obtained coordinates, set the work range, recognize the distance to the coordinates, measure the thickness of each part of the scale with the pixel information of the disparity depth map, and work without damaging the base material with appropriate laser power and speed. you can raise your stamina. In addition, the stereo camera inspects the operation of the laser, provides coordinate value information of the unremoved scale, and performs re-customization through the provided information, thereby reducing the process error rate.

4 is a view showing a laser irradiation unit of a dry custom tube device of a plate heat exchanger according to an embodiment of the present invention.

Referring to (a) of FIG. 4 , the laser irradiation unit 200 may be manufactured in a hand gun type including a handle 210 on one side, and can be detached from the drive module 300 to improve the amount of work or workability. Depending on the environment, it can be attached to an automation jig.

The laser irradiation unit 200 may include a trigger unit 212 that a user can press during laser irradiation, separately from the opening 211 through which the laser is irradiated.

The laser source irradiated from the laser irradiation unit 200 emits light for a short moment that can improve the workability of scale removal while minimizing thermal deformation or damage to the 0.5t thin metal (stainless, titanium, hastelloy, etc.) base material. A pulse type laser that can increase the peak power can be applied.

The important point in laser customs is that there should be no leakage due to damage or deformation of the base material of the heat transfer plate. The heat exchanger plate is a thin plate material of 0.5T, and must withstand a maximum temperature of 150 ° C and a pressure of 25 bar, and the heat exchanger plate is stacked to form a flow path, so leak problems can occur even with minute changes. In the laser tube, physical properties such as specific heat and heat transfer of the heat transfer plate base material and scale affect the result of the laser tube. Although there are various types of sources such as continuous laser (CW) and pulse (CW) laser sources used in laser tubes, pulse-type laser sources that can instantly increase peak power to remove only scale while minimizing thermal deformation or damage to the base material. can be used.

In addition, a lens having a laser light width of 250 mm to 350 mm may be included so that a large work area can be digested.

In addition, it may include a laser irradiation system 220 that receives a control message for controlling the irradiation degree of the laser irradiation unit from the control unit 500 to be described later.

The handle 210 of the laser irradiation unit 200 may be connected to the laser irradiation system 220 by a wire, mounted on the driving module 300 and moved, or a user may separately irradiate the laser to the heat transfer plate.

5 is a view showing a driving module of a dry tubular device of a plate type heat exchanger according to an embodiment of the present invention.

The driving module 300 has the laser irradiation unit 200 installed, and moves the laser irradiation unit so that the laser irradiation unit radiates laser to a predetermined area of the heat transfer plate 20 .

The driving module 300 may be a cartesian robot, and the working range, laser irradiation unit height, power, and moving speed may be adjusted according to the collected data.

Referring to FIG. 5 , the driving module 300 may be a three-axis orthogonal robot capable of moving in directions D1, D2, and D3.

In addition, a mounting unit 310 capable of mounting the laser irradiation unit 200 inside may be included.

In the field where the existing laser cleaner is introduced, a method of moving the irradiation area through a driving motor is adopted by using a conveyor that serves as a work table on which an object to be cleaned is placed. However, when the conveyor is driven, precision is lowered due to a phenomenon in which the object to be cleaned is shaken and the coordinates are distorted, and when the speed is lowered to reduce the shaking phenomenon, productivity is lowered.

The cartesian robot utilizes a hybrid technology of electric and pneumatic components, so it can easily introduce 2D and 3D linear applications, and the control of the motor is precise and there is little shaking because it moves in a fixed form. In addition, since it can move at high speed, damage to the 0.5t thin base material can be reduced due to the laser.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

10: dry tubular device of plate heat exchanger
100: heat transfer plate transfer unit
200: laser irradiation unit
300: driving module
400: image acquisition unit
500: control unit
600: roller unit

Claims (10)

In the dry tube device of the plate heat exchanger for cleaning contaminants on the heat transfer plate,
a heat transfer plate transfer unit for transferring the heat transfer plate in one direction;
a laser irradiation unit for irradiating a laser to remove the contaminants on the front or rear surface of the heat transfer plate;
a driving module in which the laser irradiation unit is installed and which moves the laser irradiation unit so that the laser irradiation unit radiates laser to a predetermined area of the heat transfer plate;
an image acquisition unit acquiring customs range data for customs of the heat transfer plate based on a photographed image of the heat transfer plate; and
Based on the customs range data, a control unit for generating a control message for controlling the irradiation degree of the laser irradiation unit and the driving module,
The heat transfer plate transfer unit,
Including a pair of clamp belts fixed to both sides of the heat transfer plate and provided to adjust the distance according to the size of the heat transfer plate,
The drive module,
A dry customs device driven to receive the control message and move the laser irradiation unit to a position corresponding to the location of the contaminant. delete According to claim 1,
The heat transfer plate transfer unit,
A dry custom tube device further comprising a driving motor connected to one end of the clamp belt and providing power to move the heat transfer plate in the one direction. According to claim 1,
The image acquisition unit,
The dry customs tube device, characterized in that for obtaining the coordinate information of the point where the contaminant is located in the image of the heat transfer plate. According to claim 4,
The image acquisition unit,
Dry customs device, characterized in that for generating a depth map based on the image of the heat transfer plate. According to claim 5,
The control unit,
Based on the obtained coordinate information, a location and a moving range of the laser irradiation unit are determined to irradiate the laser to the heat transfer plate. According to claim 5,
The control unit,
Based on the generated depth map, the dry customs device, characterized in that for determining the output of the laser irradiation unit. According to claim 5,
The control unit,
Based on the generated depth map, the dry customs device, characterized in that for determining the moving speed of the driving module. According to claim 1,
Dry type tube device further comprising a roller unit for removing dust and foreign substances from the heat transfer plate irradiated with the laser by the laser irradiation unit. According to claim 1,
The laser irradiator,
A handle is included on one side, and the dry customs device, characterized in that installed detachably to the driving module.

Images