Steel wire rope online cleaning method and steel wire rope cleaning device

Abstract

The invention provides a steel wire rope online cleaning method and a steel wire rope cleaning device.The steel wire rope online cleaning method comprises the steps that S1, a carbon dioxide compression pump sucks carbon dioxide liquid and then conveys the carbon dioxide liquid to a mixed flow nozzle, carbon dioxide is sprayed to the surface of a to-be-cleaned steel wire rope through the mixed flow nozzle, and a carbon dioxide liquid film is generated on the surface of the steel wire rope; and S2, the carbon dioxide liquid film on the surface of the steel wire rope is irradiated through laser, liquid carbon dioxide cavitation is induced, and the steel wire rope is cleaned through shock waves generated by cavitation. Through the liquid film formed by the carbon dioxide liquid and the cavitation effect induced by laser, deep cleaning can be carried out under the condition that the steel wire rope is not directly contacted. The carbon dioxide liquid film provides a uniform covering layer, then attachments and pollutants on the surface of the steel wire rope can be rapidly removed through the force of shock waves generated by cavitation, the steel wire rope can be rapidly cleaned when needing to be cleaned, the time needed for cleaning the steel wire rope is shortened, and the quite efficient cleaning effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel measurement, and in particular to an online cleaning method and a cleaning device for a steel wire rope. Background Art

[0002] Mining wire rope is an indispensable equipment for coal production, and is widely used in mine hoisting, endless rope winch, aerial ropeway, belt conveyor traction, electric shovel and return column, etc. Most mining wire ropes are in a dusty environment for a long time, and dust, oil and other stains are adsorbed on the surface of the wire rope, which easily accumulates to form a large area of ​​stains that are difficult to remove, which not only affects the performance and aggravates wear, but also reduces the service life of the wire rope or fails to achieve the expected function if used without maintenance for a long time, and even causes some safety accidents, posing a threat to the safe production of coal mines.

[0003] The existing wire rope cleaning method requires the wire rope to be removed or the equipment to be shut down, and then cleaned with a brush, water or a detergent. There are problems such as low cleaning efficiency due to untimely cleaning and poor cleaning effect. Summary of the invention

[0004] The invention provides a wire rope online cleaning method and a wire rope cleaning device to solve the problem of low cleaning efficiency of the wire rope cleaning method in the prior art.

[0005] In order to solve the above problems, according to one aspect of the present invention, the present invention provides a method for online cleaning of a steel wire rope, comprising:

[0006] Step S1: The carbon dioxide compression pump sucks in carbon dioxide liquid, and then delivers it to the mixed flow nozzle, and the carbon dioxide is sprayed onto the surface of the steel wire rope to be cleaned through the mixed flow nozzle, so that a layer of carbon dioxide liquid film is generated on the surface of the steel wire rope;

[0007] Step S2: The carbon dioxide liquid film on the surface of the steel wire rope is irradiated with a laser to induce cavitation of the liquid carbon dioxide, and the steel wire rope is cleaned by the shock wave generated by the cavitation.

[0008] Furthermore, in step S1, the liquid carbon dioxide is divided into two parts when passing through the mixing nozzle, one part of which absorbs heat and expands, gasifies into carbon dioxide gas, and forms a high-speed jet airflow, and the other part loses heat, cools down and solidifies into dry ice particles, which are mixed into the high-speed jet airflow. The high-speed jet airflow containing dry ice particles is sprayed onto the surface of the wire rope. Under the impact, the dry ice particles close to the surface of the wire rope collide and are compressed to become liquid, forming a carbon dioxide liquid film.

[0009] Furthermore, in step S2, laser irradiation is focused on the position of the carbon dioxide liquid film, and laser heating is used to induce cavitation bubbles in the liquid carbon dioxide, and the collapse of the bubbles generates shock waves, thereby cleaning the surface of the wire rope.

[0010] Furthermore, in step S1, a plurality of mixed flow nozzles are arranged in the circumferential direction of the steel wire rope; in step S2, a carbon dioxide liquid film on the surface of the steel wire rope is irradiated with laser in the circumferential direction of the steel wire rope.

[0011] According to another aspect of the present invention, a wire rope cleaning device is provided. Using the above-mentioned wire rope online cleaning method, the wire rope cleaning device includes a cavitation induction cleaning chamber, a mixed flow nozzle, a cavitation induction laser, a compression pump, a liquid carbon dioxide storage tank and a laser power supply; wherein, the mixed flow nozzle and the cavitation induction laser are arranged in the cavitation induction cleaning chamber, holes for passing the wire rope are provided on both sides of the cavitation induction cleaning chamber, the mixed flow nozzle includes a liquid inlet chamber, a diverter chamber and a mixed flow chamber arranged in sequence, the liquid inlet chamber is connected to the outlet of the compression pump, a diverter baffle is provided in the diverter chamber, the outlet of the mixing flow chamber sprays carbon dioxide onto the surface of the wire rope to be cleaned, so that a layer of carbon dioxide liquid film is generated on the surface of the wire rope, and the cavitation induction laser is used to generate laser and irradiate the carbon dioxide liquid film on the surface of the wire rope.

[0012] Furthermore, a plurality of mixed flow nozzles and a plurality of cavitation inducing lasers are arranged in the cavitation inducing cleaning chamber, and the plurality of mixed flow nozzles and the plurality of cavitation inducing lasers are arranged in one-to-one correspondence.

[0013] Furthermore, a focal length adjustment screw and a focusing lens are arranged inside the cavitation induced laser. There are threads at the matching positions of the focusing lens and the focal length adjustment screw. When the focal length adjustment screw rotates, the focusing lens can move along the focal length adjustment screw.

[0014] Furthermore, the mixed flow nozzle and the cavitation inducing laser are both obliquely arranged on the inner wall of the cavitation inducing cleaning chamber, and the jet point of the mixed flow nozzle and the irradiation point of the corresponding cavitation inducing laser are at the same position.

[0015] Furthermore, the outer wall of the mixed flow nozzle is made of heat-insulating material, and the diverter baffle divides the diverter chamber into an expansion chamber and a solidification chamber with different flow areas. After the carbon dioxide liquid in the liquid inlet chamber flows into the diverter chamber, the liquid carbon dioxide is diverted under the action of the diverter baffle. The carbon dioxide liquid entering the expansion chamber absorbs heat and expands, and is vaporized into carbon dioxide gas to form a high-speed jet airflow. The carbon dioxide liquid entering the solidification chamber loses heat, cools down and solidifies into dry ice particles, and then mixes into the high-speed jet airflow in the mixed flow chamber.

[0016] Furthermore, a resonant cavity and a focus adjustment motor are provided in the cavitation induced laser, and the focus adjustment screw is driven to rotate by the focus adjustment motor so as to adapt to steel wire ropes of different diameters by adjusting the laser focusing position.

[0017] By applying the technical solution of the present invention, a method for online cleaning of a steel wire rope is provided, comprising: step S1: a carbon dioxide compression pump sucks in carbon dioxide liquid, and then transports it to a mixed flow nozzle, and the carbon dioxide is sprayed onto the surface of the steel wire rope to be cleaned through the mixed flow nozzle, so that a layer of carbon dioxide liquid film is generated on the surface of the steel wire rope; step S2: the carbon dioxide liquid film on the surface of the steel wire rope is irradiated by a laser to induce cavitation of the liquid carbon dioxide, and the steel wire rope is cleaned by the shock wave generated by the cavitation.

[0018] In this solution, the liquid film formed by the carbon dioxide liquid and the laser-induced cavitation can be used to perform deep cleaning without direct contact with the wire rope. The carbon dioxide liquid film in this method provides a uniform covering layer, and then the shock wave generated by cavitation can be used to quickly remove oil, rust, dust, dirt and other attachments on the surface of the wire rope. The wire rope can be quickly cleaned when it needs to be cleaned, and the time required to clean the wire rope is reduced, achieving a very efficient cleaning effect. Moreover, the carbon dioxide liquid and laser cleaning process do not directly contact the wire rope, which can avoid the common physical wear and scratch problems in traditional cleaning methods, protect the surface of the wire rope from damage, and extend the service life of the wire rope. The cleaning method in this embodiment does not require the addition of water and some cleaning agents, so there will be no waste of water resources and the impact of cleaning agents on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A flow chart showing a method for online cleaning of a steel wire rope provided by an embodiment of the present invention is shown;

[0021] Figure 2 A top cross-sectional view of a wire rope cleaning device provided by an embodiment of the present invention is shown;

[0022] Figure 3 A side cross-sectional view of a wire rope cleaning device provided by an embodiment of the present invention is shown;

[0023] Figure 4 A schematic diagram of the structure of a mixed flow nozzle of a wire rope cleaning device provided by an embodiment of the present invention is shown;

[0024] Figure 5A schematic diagram of the structure of a cavitation-inducing laser of a wire rope cleaning device provided in an embodiment of the present invention is shown;

[0025] Figure 6 Schematic diagram showing the location of laser-induced cavitation in liquid carbon dioxide.

[0026] The above drawings include the following reference numerals:

[0027] 10. Cavitation induction cleaning chamber;

[0028] 20. Mixing flow nozzle; 21. Liquid inlet chamber; 22. Diverter chamber; 23. Diverter baffle; 24. Mixing flow chamber;

[0029] 30. Cavitation-induced laser; 31. Focus adjustment screw; 32. Focus lens; 33. Resonant cavity; 34. Focus adjustment motor;

[0030] 40. Wire rope;

[0031] 50. Compression pump;

[0032] 60. Liquid carbon dioxide storage tank;

[0033] 70 laser power supply. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0035] like Figures 1 to 6 As shown, an embodiment of the present invention provides an online cleaning method for a steel wire rope, comprising: step S1: a carbon dioxide compression pump 50 sucks carbon dioxide liquid, and then delivers it to a mixed flow nozzle 20, and the carbon dioxide is sprayed onto the surface of a steel wire rope 40 to be cleaned through the mixed flow nozzle 20, so that a layer of carbon dioxide liquid film is generated on the surface of the steel wire rope 40;

[0036] Step S2: The carbon dioxide liquid film on the surface of the steel wire rope 40 is irradiated with a laser to induce cavitation of the liquid carbon dioxide, and the steel wire rope 40 is cleaned by the shock wave generated by the cavitation.

[0037] In this embodiment, the liquid film formed by the carbon dioxide liquid and the cavitation induced by the laser (i.e., the liquid film formed by the carbon dioxide liquid is quickly vaporized by heating), deep cleaning can be performed without direct contact with the wire rope 40. The carbon dioxide liquid film in this method provides a uniform covering layer, and then the shock wave generated by cavitation can be used to quickly remove the oil, rust, dust, dirt and other attachments on the surface of the wire rope, so that the wire rope 40 can be quickly cleaned when it needs to be cleaned, and the time required for cleaning the wire rope 40 is reduced, achieving a very efficient cleaning effect. Moreover, the carbon dioxide liquid and the laser cleaning process do not directly contact the wire rope 40, so that the common physical wear and scratch problems in traditional cleaning methods can be avoided, the surface of the wire rope 40 is protected from damage, and the service life of the wire rope 40 can be extended. The cleaning method in this embodiment does not require the addition of water and some cleaning agents, so there will be no waste of water resources and the impact of cleaning agents on the environment.

[0038] Further, in step S1, the liquid carbon dioxide is divided into two parts when passing through the mixing nozzle 20, one part of which absorbs heat and expands, gasifies into carbon dioxide gas, and forms a high-speed jet airflow, and the other part loses heat, cools down and solidifies into dry ice particles, which are mixed into the high-speed jet airflow. The high-speed jet airflow containing dry ice particles is sprayed onto the surface of the wire rope 40. Under the impact, the dry ice particles close to the surface of the wire rope 40 collide and are compressed to become liquid, forming a carbon dioxide liquid film.

[0039] In this embodiment, when the liquid carbon dioxide passes through the mixing nozzle 20, the liquid carbon dioxide is divided into two parts after the mixing nozzle 20 absorbs and releases heat. One part absorbs the heat released by the mixing nozzle 20 to expand, gasifies into carbon dioxide gas, and forms a high-speed jet airflow. The other part absorbs a part of the heat by the mixing nozzle 20, cools down and solidifies into dry ice particles, mixes into the high-speed jet airflow, and then is sprayed together to the surface of the wire rope 40. Under the action of impact, the dry ice particles close to the surface of the wire rope 40 collide and become liquid under pressure, forming a carbon dioxide liquid film, which can effectively cover the surface of the wire rope 40. The carbon dioxide liquid film can penetrate into the tiny gaps on the surface of the wire rope 40 to wrap the pollutants. The temperature of the liquid carbon dioxide is low, and the pollutants can be brittle by low temperature, and help remove pollutants such as oil and rust that are difficult to remove or have strong adhesion in the subsequent steps.

[0040] Specifically, in step S2 , laser irradiation is focused on the position of the carbon dioxide liquid film, and laser heating is used to induce cavitation bubbles in the liquid carbon dioxide. The collapse of the bubbles generates shock waves, thereby cleaning the surface of the steel wire rope 40 .

[0041] In this embodiment, laser irradiation is focused on the position of the carbon dioxide liquid film, so that the liquid carbon dioxide is rapidly gasified under the action of local high temperature to form bubbles. These bubbles will expand and quickly collapse, and generate shock waves to crush and remove the pollutants that have become brittle after being wrapped by the liquid carbon dioxide. The whole process is simple and efficient, which reduces the cleaning time and improves the cleaning efficiency. The shock waves generated when the bubbles collapse are not only effective for the dirt on the surface of the wire rope 40, but also because the shock waves have a certain penetrating power, they can penetrate into the tiny pores, gaps and surface textures of the wire rope 40 to remove those dirt that are difficult to clean by traditional methods. In addition, there is no friction or physical impact in the entire cleaning process, so it will not cause any physical wear or scratches on the surface of the wire rope 40.

[0042] In step S1 , a plurality of mixed flow nozzles 20 are arranged in the circumferential direction of the steel wire rope 40 ; in step S2 , a carbon dioxide liquid film on the surface of the steel wire rope 40 is irradiated with laser in the circumferential direction of the steel wire rope 40 .

[0043] In this embodiment, the arrangement of multiple mixed flow nozzles 20 enables the liquid carbon dioxide to evenly cover the circumferential surface of the wire rope 40, ensuring that the entire surface of the wire rope 40 can be fully cleaned and treated. By laser irradiating the circumferential surface, the carbon dioxide liquid film can be evenly heated, inducing cavitation and the generation of shock waves, thereby enhancing the comprehensiveness of the cleaning and avoiding the situation where only local areas are cleaned while other areas are ignored. Moreover, after multiple mixed flow nozzles 20 are arranged circumferentially, the liquid carbon dioxide can act on multiple surface areas of the wire rope at the same time, thereby improving the overall efficiency of the cleaning process.

[0044] An embodiment of the present invention also includes a wire rope cleaning device, which uses the above-mentioned wire rope online cleaning method, including a cavitation induction cleaning chamber 10, a mixed flow nozzle 20, a cavitation induction laser 30, a compression pump 50, a liquid carbon dioxide storage tank 60 and a laser power supply 70; wherein, the mixed flow nozzle 20 and the cavitation induction laser 30 are arranged in the cavitation induction cleaning chamber 10, and holes for passing the wire rope 40 are provided on both sides of the cavitation induction cleaning chamber 10. The interior of the mixed flow nozzle 20 includes a liquid inlet chamber 21, a diverter chamber 22 and a mixed flow chamber 24 arranged in sequence, the liquid inlet chamber 21 is connected to the outlet of the compression pump 50, and a diverter baffle 23 is provided in the diverter chamber 22. The outlet of the mixing flow chamber 24 sprays carbon dioxide onto the surface of the wire rope 40 to be cleaned, so that a layer of carbon dioxide liquid film is generated on the surface of the wire rope 40, and the cavitation induction laser 30 is used to generate laser and irradiate the carbon dioxide liquid film on the surface of the wire rope 40.

[0045] In this embodiment, the liquid carbon dioxide is transported to the mixing flow nozzle 20 by the compression pump 50, and the liquid carbon dioxide enters the diverter chamber 22 through the liquid inlet chamber 21. Through the diverter baffle 23 and the heat absorption and release function, a part of the liquid carbon dioxide absorbs heat and expands, gasifies into carbon dioxide gas, and forms a high-speed airflow, and the other part loses heat, cools down and solidifies into dry ice particles. Finally, the dry ice particles are mixed with the high-speed airflow in the mixing flow chamber 24, and the liquid carbon dioxide is sprayed onto the surface of the steel wire rope 40 to form a layer of carbon dioxide liquid film. This film can not only effectively cover the entire surface of the steel wire rope 40, but also can use the cooling effect of the liquid carbon dioxide to irradiate the carbon dioxide liquid film through the laser emitted by the cavitation induction laser 30, and the laser heating induces carbon dioxide to produce cavitation bubbles. These bubbles will release powerful shock waves when they collapse, and deeply clean the surface of the steel wire rope 40, help remove oil, rust and other pollutants on the surface, and effectively avoid wear or damage to the surface of the steel wire rope 40.

[0046] like Figure 2 and Figure 3 As shown, a plurality of mixed flow nozzles 20 and a plurality of cavitation inducing lasers 30 are arranged in the cavitation inducing cleaning chamber 10 , and the plurality of mixed flow nozzles 20 and the plurality of cavitation inducing lasers 30 are arranged in a one-to-one correspondence.

[0047] In this embodiment, multiple mixed flow nozzles 20 can cover multiple areas on the surface of the wire rope 40, ensuring that each area is covered by the carbon dioxide liquid film. At the same time, multiple cavitation inducing lasers 30 can irradiate the carbon dioxide liquid film in each area and evenly stimulate cavitation bubbles, thereby providing more uniform and thorough cleaning, avoiding the problem of incomplete local cleaning and dead corners that may be caused by a single mixed flow nozzle 20 and a cavitation inducing laser 30. In addition, multiple mixed flow nozzles 20 spray carbon dioxide liquid films at the same time, and multiple cavitation inducing lasers 30 synchronously irradiate and induce cavitation bubbles, which can clean more surface areas in the same time and improve cleaning efficiency.

[0048] like Figure 5 As shown, a focal length adjustment screw 31 and a focusing lens 32 are provided inside the cavitation induced laser 30 . The focusing lens 32 and the focal length adjustment screw 31 have threads at the matching positions. When the focal length adjustment screw 31 rotates, the focusing lens 32 can move along the focal length adjustment screw 31 .

[0049] In this embodiment, the focal length adjustment screw 31 can accurately control the focal length of the laser beam. By adjusting the position of the focusing lens 32, the focal size and position of the laser beam can be changed, thereby ensuring that the focus of the laser beam is accurately focused on the position of the carbon dioxide liquid film on the surface of the wire rope 40 to be irradiated, thereby enhancing the cleaning effect. Different pollutants or cleaning of different parts may require different focal lengths. By adjusting the focal length, the best cleaning effect can be achieved. Moreover, the size and position of the laser focus directly affect the generation of cavitation bubbles and the effect of the shock wave. By accurately adjusting the laser focal length, the laser energy can be concentrated in a specific area, inducing the generation of more cavitation bubbles, enhancing the cavitation effect, and thus improving the cleaning ability.

[0050] like Figure 2 As shown, the mixed flow nozzle 20 and the cavitation inducing laser 30 are both obliquely arranged on the inner wall of the cavitation inducing cleaning chamber 10, and the jet point of the mixed flow nozzle 20 and the corresponding irradiation point of the cavitation inducing laser 30 are at the same position.

[0051] In this embodiment, the jet point and irradiation point of the mixed flow nozzle 20 and the cavitation inducing laser 30 coincide, so that the energy of the laser and the ejected carbon dioxide liquid film can work together at the same position. The carbon dioxide liquid film is first ejected to the surface of the wire rope 40 through the mixed flow nozzle 20, and the laser is irradiated at these positions to induce the generation of cavitation bubbles. The high-speed airflow containing dry ice particles is ejected to the surface of the wire rope. Under the impact, the dry ice particles close to the surface are compressed and turned into liquid, forming a carbon dioxide liquid film combined with the shock wave generated by the cavitation bubbles, which can enhance the removal effect of dirt, rust and grease on the surface of the wire rope 40.

[0052] like Figure 4 As shown, the outer wall of the mixed flow nozzle 20 is made of a heat-insulating material, and the diverter baffle 23 divides the diverter chamber 22 into an expansion chamber and a solidification chamber with different flow areas. After the carbon dioxide liquid in the liquid inlet chamber 21 flows into the diverter chamber 22, the liquid carbon dioxide is diverted under the action of the diverter baffle 23. The carbon dioxide liquid entering the expansion chamber absorbs heat and expands, and is vaporized into carbon dioxide gas to form a high-speed jet airflow. The carbon dioxide liquid entering the solidification chamber loses heat, cools down and solidifies into dry ice particles, and then mixes into the high-speed jet airflow in the mixed flow chamber 24.

[0053] In this embodiment, the flow dividing baffle 23 divides the flow dividing chamber 22 into an expansion chamber and a solidification chamber with different flow areas. When the compression pump 50 delivers the liquid carbon dioxide to the mixed flow nozzle 20, the carbon dioxide liquid in the liquid inlet chamber 21 flows into the flow dividing chamber 22, and the liquid carbon dioxide is divided under the action of the flow dividing baffle 23. The carbon dioxide liquid entering the expansion chamber absorbs heat and expands, gasifies into carbon dioxide gas, and forms a high-speed jet airflow. The carbon dioxide liquid entering the solidification chamber loses heat, cools down and solidifies into dry ice particles, and then mixes into the high-speed jet airflow in the mixed flow chamber 24, and the liquid carbon dioxide is sprayed onto the surface of the wire rope 40, and a layer of carbon dioxide liquid film is formed. The outer wall of the mixed flow nozzle 20 is made of heat-insulating material, which can ensure the temperature stability of the jet airflow and dry ice particles.

[0054] like Figure 5 As shown, a resonant cavity 33 and a focus adjustment motor 34 are provided in the cavitation induced laser 30 , and a focus adjustment screw 31 is driven to rotate by the focus adjustment motor 34 so as to adapt to steel wire ropes 40 of different diameters by adjusting the laser focus position.

[0055] In this embodiment, a resonant cavity 33 and a focal length adjustment motor 34 are also provided in the cavitation induced laser 30. The focal length adjustment screw 31 is driven to rotate by the focal length adjustment motor 34 to change the focusing position of the laser, so that the laser can accurately irradiate the surface of the wire rope 40 of different diameters. The wire ropes 40 of different diameters require different laser focal lengths to ensure that the laser can effectively irradiate the carbon dioxide liquid film on the surface of the wire rope 40, thereby generating cavitation bubbles to meet the cleaning needs of various wire ropes 40.

[0056] The present application discloses an online cleaning method and a cleaning device for a steel wire rope, which realizes efficient, non-destructive and environmentally friendly cleaning of the surface of the steel wire rope 40 by forming a liquid film of liquid carbon dioxide on the surface of the steel wire rope 40 and combining it with cavitation bubbles induced by laser. The cleaning process in the present application does not require equipment shutdown, thereby improving the cleaning efficiency. At the same time, the use of liquid carbon dioxide avoids corrosion and wear on the surface of the steel wire rope 40, ensuring the service life and safety performance of the steel wire rope 40. In addition, the solution in the present application has the following advantages:

[0057] 1. The solution in the present application can fully clean the steel wire rope 40 in real time as the steel wire rope 40 is reeled in and released. The laser is used to induce liquid carbon dioxide to absorb energy and produce instantaneous gasification and expansion, which is converted into carbon dioxide bubbles and then collapses, generating shock waves in the surrounding area. The shock wave releases the dirt attached to the surface of the steel wire rope 40 and quickly falls off. The dust, mud and oil stains on the surface of the steel wire rope 40 are cleaned in time, reducing the wear of the steel wire rope and increasing the service life of the steel wire rope.

[0058] 2. The solution in the present application adopts the method of manufacturing a carbon dioxide liquid film on the surface of the steel wire rope 40. The liquid carbon dioxide generated after the dry ice particles melt has a strong solubility for organic pollutants and good self-volatility, and can effectively remove stains on the surface of the steel wire rope 40, with a good cleaning effect.

[0059] 3. The solution in the present application uses laser-induced liquid carbon dioxide cavitation to clean the steel wire rope 40 online. The liquid carbon dioxide cavitation induction can be completed using a low-power laser. The cleaning accuracy and cleaning efficiency are high with low energy consumption and are easy to implement.

[0060] 4. The laser-induced liquid carbon dioxide cavitation cleaning method used in the solution of the present application is a wet cleaning method, which can achieve non-destructive cleaning of the surface of the wire rope 40 and reduce the loss of the life of the wire rope 40 caused by the cleaning process.

[0061] The above is only an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. 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.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of this solution. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0064] In the description of this scheme, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing this scheme and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of this scheme; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0065] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0066] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this scheme.

Claims

1. A wire rope online cleaning method, characterized in that: include: Step S1: a carbon dioxide compression pump (50) sucks in carbon dioxide liquid, and then delivers it to a mixed flow nozzle (20), and the carbon dioxide is sprayed onto the surface of the steel wire rope (40) to be cleaned through the mixed flow nozzle (20), so that a layer of carbon dioxide liquid film is generated on the surface of the steel wire rope (40); Step S2: irradiating the carbon dioxide liquid film on the surface of the steel wire rope (40) with a laser to induce cavitation of the liquid carbon dioxide, and cleaning the steel wire rope (40) with the shock wave generated by the cavitation.

2. The method for online cleaning of a steel wire rope according to claim 1, characterized in that: In step S1, the liquid carbon dioxide is divided into two parts when passing through the mixing nozzle (20), one part of which absorbs heat and expands, gasifies into carbon dioxide gas, and forms a high-speed jet airflow, and the other part loses heat, cools down and solidifies into dry ice particles, which are mixed into the high-speed jet airflow. The high-speed jet airflow containing the dry ice particles is sprayed onto the surface of the steel wire rope (40). Under the impact, the dry ice particles close to the surface of the steel wire rope (40) collide and are compressed to become liquid, forming a carbon dioxide liquid film.

3. The method for online cleaning of a steel wire rope according to claim 1, characterized in that: In step S2, laser irradiation is focused on the position of the carbon dioxide liquid film, and laser heating is used to induce cavitation bubbles in the liquid carbon dioxide, and the collapse of the bubbles generates shock waves, thereby cleaning the surface of the steel wire rope (40).

4. The online cleaning method for steel wire rope according to claim 1, characterized in that: In the step S1, a plurality of the mixed flow nozzles (20) are arranged in the circumferential direction of the steel wire rope (40); and in the step S2, a carbon dioxide liquid film on the surface of the steel wire rope (40) is irradiated with a laser in the circumferential direction of the steel wire rope (40).

5. A wire rope cleaning device, using the wire rope online cleaning method according to any one of claims 1 to 4, characterized in that: The wire rope cleaning device comprises a cavitation induction cleaning chamber (10), a mixed flow nozzle (20), a cavitation induction laser (30), a compression pump (50), a liquid carbon dioxide storage tank (60) and a laser power supply (70); wherein the mixed flow nozzle (20) and the cavitation induction laser (30) are arranged in the cavitation induction cleaning chamber (10), holes for passing the wire rope (40) are provided on both sides of the cavitation induction cleaning chamber (10), and the mixed flow nozzle (20) comprises a cavitation induction laser (30) according to the embodiment of the present invention; A liquid inlet chamber (21), a flow diversion chamber (22) and a flow mixing chamber (24) are arranged in sequence, the liquid inlet chamber (21) is connected to the outlet of the compression pump (50), a flow diversion baffle (23) is arranged in the flow diversion chamber (22), and the outlet of the flow mixing chamber (24) sprays carbon dioxide onto the surface of the steel wire rope (40) to be cleaned, so that a layer of carbon dioxide liquid film is generated on the surface of the steel wire rope (40), and the cavitation induction laser (30) is used to generate laser and irradiate the carbon dioxide liquid film on the surface of the steel wire rope (40).

6. The wire rope cleaning device according to claim 5, characterized in that: A plurality of the mixed flow nozzles (20) and the cavitation inducing lasers (30) are arranged in the cavitation inducing cleaning chamber (10), and the plurality of mixed flow nozzles (20) and the plurality of cavitation inducing lasers (30) are arranged in a one-to-one correspondence.

7. The wire rope cleaning device according to claim 5, characterized in that: A focal length adjustment screw (31) and a focusing lens (32) are arranged inside the cavitation induced laser (30); a thread is provided at a matching position between the focusing lens (32) and the focal length adjustment screw (31); when the focal length adjustment screw (31) rotates, the focusing lens (32) can move along the focal length adjustment screw (31).

8. The wire rope cleaning device according to claim 5, characterized in that: The mixed flow nozzle (20) and the cavitation inducing laser (30) are both arranged obliquely on the inner wall of the cavitation inducing cleaning chamber (10), and the jet point of the mixed flow nozzle (20) and the corresponding irradiation point of the cavitation inducing laser (30) are at the same position.

9. The wire rope cleaning device according to claim 5, characterized in that: The outer wall of the mixing nozzle (20) is made of a heat-insulating material, and the diverter baffle (23) divides the diverter chamber (22) into an expansion chamber and a solidification chamber with different flow areas. After the carbon dioxide liquid in the liquid inlet chamber (21) flows into the diverter chamber (22), the liquid carbon dioxide is diverted under the action of the diverter baffle (23). The carbon dioxide liquid entering the expansion chamber absorbs heat and expands, and is vaporized into carbon dioxide gas to form a high-speed jet airflow. The carbon dioxide liquid entering the solidification chamber loses heat, cools down and solidifies into dry ice particles, and then mixes into the high-speed jet airflow in the mixing chamber (24).

10. The wire rope cleaning device according to claim 7, characterized in that: The cavitation induced laser (30) is provided with a resonant cavity (33) and a focus adjustment motor (34), and the focus adjustment screw (31) is driven to rotate by the focus adjustment motor (34) so ​​as to adapt to steel wire ropes (40) of different diameters by adjusting the laser focus position.

Images