Combined cable purging device

Abstract

The utility model discloses a combined cable purging device. The combined cable purging device comprises a cable bridge; the airflow nozzle device is mounted on the cable bridge and used for blowing dust accumulated on the cables in the cable bridge; the airflow nozzle device comprises a main air path, a transverse nozzle structure and a longitudinal nozzle structure, the transverse nozzle structure and the longitudinal nozzle structure are installed on the main air path, the longitudinal nozzle structure blows accumulated dust into the air, the transverse nozzle structure blows the dust in the air out of the accumulation space, and secondary accumulation is avoided. According to the utility model, dust covering the cable can be effectively removed, and problems caused by dust accumulation and secondary accumulation can be solved.

Description

Technical Field

[0001] The present application relates to a combined cable blowing device, belonging to the technical field of cable blowing. Background Art

[0002] Currently, coal-fired boilers in thermal power plants are subject to the leakage and spread of fine dust during production and operation, particularly in the coal pulverization and transportation areas. The leaked dust consists of coal dust particles. Once leaked, the dust will drift and settle throughout the production site, particularly on the cable trays installed in these areas and on the power and control cables installed within. If not promptly removed, the dust accumulation will increase in thickness. According to statistics from one power plant, dust thickness can reach approximately 30mm after one month of operation. Power cables generate heat during operation, and excessive dust prevents the proper dissipation of this heat. This not only accelerates the aging of the power cables, but in severe cases, the coal dust particles can easily ignite and spontaneously combust in this environment, potentially causing fires and cable short-circuit explosions.

[0003] At present, power cables at production sites need to be cleaned of dust on the cables regularly. For example, the utility model patent with the announcement number CN208001119U discloses a cable tray that is easy to clean and cool. Specifically, the workers use an external blowing mechanism to remove dust from the cable tray through a spray pipe installed between the pipe diameter bracket panels. However, during the dust removal work, the dust after blowing will be deposited again. Utility Model Content

[0004] According to one aspect of the present application, a combined cable blowing device is provided, which effectively removes dust covering the cable and solves the problems caused by dust accumulation and secondary accumulation.

[0005] A combined cable blowing device, characterized by comprising:

[0006] cable trays;

[0007] An air flow nozzle device is installed on the cable tray and is used to blow away dust accumulated on the cables in the cable tray;

[0008] The airflow nozzle device includes a main air path and a transverse nozzle structure and a longitudinal nozzle structure installed on the main air path. The longitudinal nozzle structure blows the accumulated dust into the air, and the transverse nozzle structure blows the dust in the air out of the accumulation space to avoid secondary accumulation.

[0009] Furthermore, the air flow nozzle device is mounted on the cable tray via a mounting flange;

[0010] A universal joint is installed on the mounting flange, one end of the universal joint is provided with an air inlet interface, the air inlet interface is connected to the on-site air source, and the other end of the universal joint is connected to the main air path.

[0011] Furthermore, the longitudinal nozzle structure includes a longitudinal air path and a plurality of longitudinal nozzles arranged on the longitudinal air path;

[0012] The transverse nozzle structure includes a transverse air path and a transverse nozzle arranged on the transverse air path;

[0013] The longitudinal air path and the transverse air path are both connected to the end of the main air path.

[0014] Furthermore, the longitudinal gas path is coaxially arranged with the main gas path;

[0015] The transverse air path is arranged perpendicular to the main air path / longitudinal air path.

[0016] Furthermore, the air holes at the end of the longitudinal nozzle and the transverse nozzle are both provided with tapered long slots set at an angle, so that the ejected gas is distributed in a fan shape.

[0017] Furthermore, the transverse gas path includes a first transverse gas path and a second transverse gas path, and the first transverse gas path and the second transverse gas path are both provided with a plurality of transverse nozzles;

[0018] The first transverse air path and the second transverse air path are located on both sides of the main air path / longitudinal air path.

[0019] Furthermore, the universal joint is an adjustable spherical joint.

[0020] The beneficial effects of this application include:

[0021] The present application provides a combined cable blowing device, which has an air flow nozzle device, which is installed on the cable tray and is used to blow away the dust accumulated on the cables in the cable tray; the air flow nozzle device includes a main air path and a transverse nozzle structure and a longitudinal nozzle structure installed on the main air path, the longitudinal nozzle structure blows the accumulated dust into the air, and the transverse nozzle structure blows the dust in the air out of the accumulation space, effectively and promptly removing the dust covering the cables, reducing the workload of maintenance personnel, reducing safety risks, solving a series of problems caused by dust accumulation, and avoiding secondary accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a combined cable blowing device in one embodiment of the present application;

[0023] List of components and reference numerals: 1-main air path; 2-mounting flange; 3-universal joint; 4-air inlet interface; 5-longitudinal air path; 6-longitudinal nozzle; 7-lateral nozzle; 8-conical long slot hole; 9-first lateral air path; 10-second lateral air path. DETAILED DESCRIPTION

[0024] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0025] See also Figure 1 , a combined cable blowing device, characterized by comprising:

[0026] cable trays;

[0027] An air flow nozzle device is installed on the cable tray and is used to blow away dust accumulated on the cables in the cable tray;

[0028] The airflow nozzle device includes a main air path 1 and a transverse nozzle structure and a longitudinal nozzle structure installed on the main air path 1. The longitudinal nozzle structure blows the accumulated dust into the air, and the transverse nozzle structure blows the dust in the air out of the accumulation space to avoid secondary accumulation.

[0029] Specifically, a cable tray is a structure that supports and secures cables. It's located above or around the cables, providing a stable and organized path for them. The airflow nozzle assembly is the core component of this purge system. Installed on the cable tray, it sprays high-speed airflow to remove dust from the cables. This design eliminates the tedious and dangerous process of manual cleaning, improving work efficiency and safety. Main air path 1 is the air supply system for the airflow nozzle assembly, responsible for delivering the appropriate gas to each nozzle. The design of the main air path must consider gas flow rate, pressure, and uniformity of distribution to ensure that each nozzle receives sufficient airflow to complete the purge task. The longitudinal nozzle structure is primarily located on the side or below the cable tray, with its spray direction parallel to the cables. When the purge is activated, the longitudinal nozzles release a high-speed airflow, blowing dust accumulated on the cables into the air. This design effectively breaks up dust accumulation, facilitating subsequent cleaning. Unlike the longitudinal nozzles, the transverse nozzles spray perpendicularly to the cables or cable tray. Once the longitudinal nozzles lift the dust, the transverse nozzles immediately activate, blowing the airborne dust toward the edge of the cable tray or a designated collection area. This prevents secondary accumulation of dust within the cable tray, keeping it clean and the cables safe. This combined cable purge device, through its rational layout of airflow nozzles and structural design, effectively removes dust from cables within the cable tray and prevents secondary accumulation. This not only improves work efficiency and safety, but also extends the service life of the cables and cable tray. In practice, the number and position of the nozzles can be adjusted and optimized to achieve optimal purge results based on specific environments and needs.

[0030] The air flow nozzle device is installed on the cable tray through the mounting flange 2;

[0031] A universal joint 3 is installed on the mounting flange 2 , and an air inlet interface 4 is provided at one end of the universal joint 3 , the air inlet interface 4 is connected to the on-site air source, and the other end of the universal joint 3 is connected to the main air path 1 .

[0032] Specifically, the mounting flange 2 is a key component connecting the airflow nozzle assembly to the cable tray. It has standard dimensions and bolt holes to match the corresponding interfaces on the cable tray. During installation, the mounting flange 2 is fixed to the predetermined position of the cable tray to ensure stability and a good seal to prevent gas leakage. The universal joint 3 is mounted on the mounting flange 2, and its design allows for adjustment of angle and direction within a certain range. This flexibility is crucial to ensure that the airflow nozzle assembly can accurately align with the cables in the cable tray and effectively blow away dust. The air inlet interface 4 is provided at one end of the universal joint 3 for connecting to the on-site air source. This interface typically has standard threads or a quick-connect device to easily connect to different types of air source pipes or hoses. The appropriate gas is delivered to the airflow nozzle assembly through the air inlet interface 4. It is worth noting that this application can use an on-site instrument air source, which has high gas output pressure, thorough cleaning, and saves gas source. The main air path 1 is the air supply channel inside the airflow nozzle assembly. It connects to the other end of the universal joint 3 and delivers gas to the horizontal nozzle structure and the longitudinal nozzle structure. The design of the main air path 1 needs to ensure the smoothness and uniformity of the gas flow so that each nozzle can obtain sufficient airflow to perform the purge task. When the on-site air source supplies air to the main air path 1 through the air inlet interface 4 and the universal joint 3, the gas is distributed to the horizontal nozzle structure and the longitudinal nozzle structure. The longitudinal nozzle structure first ejects a high-speed airflow to blow the dust accumulated on the cables in the cable tray into the air. Subsequently, the horizontal nozzle structure blows the dust in the air to the edge of the cable tray or the designated collection area, thereby avoiding secondary accumulation of dust. This design not only improves the purge efficiency, but also enhances the adaptability and flexibility of the device. By adjusting the angle and direction of the universal joint 3, it can easily adapt to cable trays of different shapes and sizes, ensuring that the airflow nozzle device can accurately align the cables and effectively remove dust.

[0033] The longitudinal nozzle structure includes a longitudinal air path 5 and a plurality of longitudinal nozzles 6 arranged on the longitudinal air path 5;

[0034] The transverse nozzle structure includes a transverse air path and a transverse nozzle 7 arranged on the transverse air path;

[0035] The longitudinal gas path 5 and the transverse gas path are both connected to the ends of the main gas path 1 .

[0036] Specifically, the longitudinal air path 5 is a channel specifically used to provide airflow to the longitudinal nozzle 6. It extends along the length of the cable tray to ensure that the airflow can be evenly distributed to each longitudinal nozzle 6. The design of the longitudinal air path 5 needs to take into account the gas flow, pressure loss and the spacing between the nozzles to ensure that each nozzle can obtain sufficient airflow to perform the purging task. The longitudinal nozzles 6 are key components installed on the longitudinal air path 5. They are responsible for blowing the dust accumulated on the cables in the cable tray into the air. These nozzles usually have specific spray angles and shapes to optimize the distribution of airflow and the purging effect. By adjusting the number, spacing and spray angle of the nozzles, targeted purging of dust accumulation in different areas and degrees can be achieved.

[0037] The longitudinal gas path 5 is coaxially arranged with the main gas path 1;

[0038] The transverse gas path is arranged perpendicular to the main gas path 1 / longitudinal gas path 5.

[0039] Specifically, the longitudinal air path 5 is aligned with the main air path 1 on the central axis. This design helps ensure that gas flows smoothly from the main air path 1 into the longitudinal air path 5, reducing air flow losses and turbulence at turns or branches. The transverse air path intersects the main air path 1 at a right angle (since the longitudinal air path is coaxial with the main air path, it also indirectly intersects the longitudinal air path 5). This design allows the transverse nozzle structure to spray air in a direction perpendicular to the length of the cable tray (i.e., transversely), thereby effectively blowing the dust blown up by the longitudinal nozzle out of the accumulation space. The vertical setting not only optimizes the distribution and purge effect of the air flow, but also avoids the formation of vortices or backflows in the air flow inside the cable tray, thereby improving the purge efficiency. Therefore, the main air path 1 introduces gas from the side or top of the cable tray and is connected to the on-site air source through the universal joint 3. The main air path 1 is bifurcated at the end into the longitudinal air path 5 and the transverse air path. The longitudinal air path 5 is coaxially arranged downstream of the main air path 1 and is responsible for conveying the air flow to the longitudinal nozzle 6. The transverse air path intersects the main air path 1 (or the longitudinal air path 5) at right angles and delivers the airflow to the transverse nozzle 7. In this way, the longitudinal nozzle 6 and the transverse nozzle 7 can work together to achieve comprehensive blowing and cleaning of dust on the cables in the cable tray.

[0040] The end air holes of the longitudinal nozzle 6 and the transverse nozzle 7 are both provided with tapered long slot holes 8 arranged at an angle, so that the ejected gas is distributed in a fan shape.

[0041] Specifically, the design of the tapered slotted holes 8 results in a fan-shaped distribution of the ejected gas, rather than a single, straight-line flow. This fan-shaped airflow more widely covers the cable surface and surrounding area, effectively dispersing and removing dust. Because the airflow is dispersed into a fan-shaped pattern, each direction has a specific velocity and pressure. This dispersed airflow acts more evenly on the dust, reducing excessive impact on a single point while enhancing the overall sweeping force, making it easier to lift and remove dust from accumulation areas. Traditional nozzle designs may generate vortexes or backflows, causing some dust to redeposit on the cables or within the cable bridge. The fan-shaped airflow design of the tapered slotted holes 8 helps mitigate these adverse effects, making the sweeping process smoother and more efficient. The tapered slotted holes 8 are set at a specific angle at the end of the nozzle, typically determined by the sweeping requirements and the cable arrangement. By adjusting the angle of the cone, the airflow distribution and sweeping effect can be optimized. The slotted holes are tapered, meaning that the orifice width gradually increases from the inside of the nozzle to the outside. This design helps to accelerate the diffusion of the airflow and the formation of a fan-shaped distribution, while reducing the resistance of the airflow inside the nozzle. In summary, the tapered long slots 8 provided at the air holes at the ends of the longitudinal nozzle 6 and the transverse nozzle 7 significantly improve the purging effect and efficiency of the purging device. The fan-shaped distributed airflow can cover the internal areas of the cables and cable trays more widely, effectively removing dust and preventing its secondary accumulation. At the same time, this design also reduces the occurrence of eddy currents and backflow phenomena, making the purging process more stable and reliable. In practical applications, this optimized design of the purging device will greatly improve the cleanliness and maintenance efficiency of the cable tray.

[0042] The transverse gas path includes a first transverse gas path 9 and a second transverse gas path 10, and the first transverse gas path 9 and the second transverse gas path 10 are both provided with a plurality of transverse nozzles 7;

[0043] The first transverse air path 9 and the second transverse air path 10 are located on both sides of the main air path 1 / longitudinal air path 5 .

[0044] Specifically, the first transverse air path 9 and the second transverse air path 10 are respectively located on both sides of the main air path 1 (longitudinal air path 5), forming a symmetrical or parallel layout. This layout helps to ensure that the airflow can evenly cover the entire width of the cable tray, avoiding blind spots during the purge process. Several transverse nozzles 7 are provided on both transverse air paths. The number and position of these nozzles are determined according to the actual size of the cable tray and the dust accumulation situation to ensure that each area can be fully purged. The transverse nozzle 7 blows the dust blown up by the longitudinal nozzle 6 further out of the accumulation space of the cable tray by spraying a fan-shaped airflow. The nozzles on the first transverse air path 9 and the second transverse air path 10 work together to form a comprehensive purge network to ensure that dust will not be retained or redeposited in a certain area. Therefore, by introducing the first transverse air path 9 and the second transverse air path 10, the purge effect of the combined cable purge device is significantly improved. This design not only enhances the coverage and uniformity of the airflow, but also improves the efficiency and stability of the purge. In practical applications, this multi-air path, multi-nozzle layout will more effectively remove dust from cable trays, maintaining cable cleanliness and proper operation. Furthermore, this design offers scalability and flexibility. Depending on the specific conditions and purge requirements of the cable tray, the number and location of the lateral air paths, as well as the number and layout of the nozzles, can be adjusted to achieve optimal purge results.

[0045] The universal joint 3 is an adjustable spherical joint.

[0046] Specifically, the universal joint 3 is an adjustable spherical joint, which can be adjusted to any angle within a 45-degree conical surface range. Therefore, it can be adjusted and arranged on site according to actual conditions, so that the purge effect is more suitable for on-site use.

[0047] The above descriptions are merely a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application discloses the preferred embodiments as above, they are not intended to limit the present application. Any technical personnel familiar with the present profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A combined cable blowing device, characterized in that: include: cable trays; An air flow nozzle device is installed on the cable tray and is used to blow away dust accumulated on the cables in the cable tray; The airflow nozzle device comprises a main air path (1) and a transverse nozzle structure and a longitudinal nozzle structure installed on the main air path (1); the longitudinal nozzle structure blows accumulated dust into the air, and the transverse nozzle structure blows the dust in the air out of the accumulation space to avoid secondary accumulation.

2. A combined cable blowing device according to claim 1, characterized in that: The air flow nozzle device is mounted on the cable tray via a mounting flange (2); A universal joint (3) is mounted on the mounting flange (2), one end of the universal joint (3) is provided with an air inlet interface (4), the air inlet interface (4) is connected to an on-site air source, and the other end of the universal joint (3) is connected to the main air path (1).

3. A combined cable blowing device according to claim 1, characterized in that: The longitudinal nozzle structure comprises a longitudinal air path (5) and a plurality of longitudinal nozzles (6) arranged on the longitudinal air path (5); The transverse nozzle structure includes a transverse air path and a transverse nozzle (7) arranged on the transverse air path; The longitudinal air path (5) and the transverse air path are both connected to the ends of the main air path (1).

4. A combined cable blowing device according to claim 3, characterized in that: The longitudinal gas path (5) is coaxially arranged with the main gas path (1); The transverse air path is arranged perpendicularly to the main air path (1) / longitudinal air path (5).

5. The combined cable blowing device according to claim 3, characterized in that: The end air holes of the longitudinal nozzle (6) and the transverse nozzle (7) are both provided with tapered long slot holes (8) arranged at an angle, so that the ejected gas is distributed in a fan shape.

6. A combined cable blowing device according to claim 4, characterized in that: The transverse air path comprises a first transverse air path (9) and a second transverse air path (10), and a plurality of transverse nozzles (7) are provided on each of the first transverse air path (9) and the second transverse air path (10); The first transverse air path (9) and the second transverse air path (10) are located on both sides of the main air path (1) / longitudinal air path (5).

7. The combined cable blowing device according to claim 2, characterized in that: The universal joint (3) is an adjustable spherical joint.

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