Fixed-point triggering type air-cooled gallery and workshop for high-temperature workshop overhead travelling crane electric control center

Abstract

The application discloses a kind of fixed-point trigger type air-cooled gallery for high-temperature workshop crane electric control hub and workshop, including installation in the high-temperature workshop outside top air supply fan and the air supply gallery being communicated with air supply fan arrangement;Air supply gallery is installed with multiple air supply ends;Air supply gallery includes intercommunication gallery, with rectangular main gallery and circular branch gallery, air supply end is installed on circular branch gallery;Rectangular main gallery is installed in the high-temperature workshop inside top.The fixed-point trigger type air-cooled gallery for high-temperature workshop crane electric control hub of the present application uses local accurate air supply technology, only for crane electric control hub is oriented cooling, without the overall cooling of entire high-temperature workshop, substantially reduce the air volume demand and energy consumption, solve the problem of high energy consumption and low cooling efficiency of traditional comprehensive ventilation system in large workshop.

Description

Technical Field

[0001] This invention belongs to the field of industrial ventilation technology, specifically relating to a point-triggered air-cooled guide corridor and workshop for the electrical control center of overhead cranes in high-temperature workshops. Background Technology

[0002] With the increasing scale and size of modern industrial plants, high-temperature workshops in industries such as metallurgy and chemicals are expanding, typically spanning 10-35 meters and exceeding 100 meters in length. As core smelting equipment in these workshops, high-temperature reaction equipment such as roasting furnaces play a crucial role. Their surface operating temperatures often exceed 140°C, dissipating significant heat into the workshop and causing a substantial increase in ambient temperature. Especially in the frequently used overhead crane area, the surrounding air temperature can rise above 80°C, far exceeding the allowable operating temperature of electrical control components. This leads to frequent equipment failures, shortened lifespans, and severely restricts production safety and efficiency. To ensure normal equipment operation, overhead cranes often need to be temporarily shut down and moved to a non-high-temperature area for cooling, causing production interruptions and impacting overall operational efficiency.

[0003] For high-temperature industrial environments like these, existing technologies primarily employ comprehensive ventilation and cooling, relying on large-volume air supply and exhaust systems to regulate the overall temperature of the workshop. However, this method faces significant limitations in large, high-temperature workshops. Firstly, the vast space necessitates extremely large air volumes for comprehensive cooling, resulting in excessive energy consumption. Secondly, the complex airflow organization due to the large structural span, concentrated heat sources, numerous process equipment and obstacles makes it difficult to transport cooling energy to the heat-generating parts of critical equipment such as overhead cranes, leading to low cooling efficiency and uneven cooling effects. Therefore, in complex industrial scenarios characterized by high temperatures, large spans, and numerous obstacles, there is an urgent need to develop a technical solution capable of achieving precise localized air supply, efficient cooling, and without disrupting continuous operation. This invention aims to address this need by providing a system and its design method that uses an automatic control system to drive the overhead air supply unit at the top of the workshop, implementing directional and precise air supply to the overhead crane's electrical control center. This achieves rapid, continuous, and targeted cooling of critical equipment components, ensuring stable operation of the overhead crane in high-temperature environments and improving production efficiency and safety. Summary of the Invention

[0004] In view of the above-mentioned shortcomings and defects of the prior art, the purpose of the present invention is to provide a fixed-point trigger type air-cooled guide corridor and workshop for the electrical control center of the overhead crane in a high-temperature workshop, so as to solve the problem that the electrical control center of the overhead crane in the high-temperature workshop is prone to shutdown due to overheating, making it difficult to maintain production continuity and work efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a fixed-point trigger type air-cooled guide corridor and workshop for the electrical control center of the overhead crane in a high-temperature workshop, including a blower installed on the top of the outer side of the high-temperature workshop and a blower guide corridor connected to the blower.

[0006] Multiple air supply terminals are installed on the air supply corridor.

[0007] The air supply corridor includes a connecting corridor connected to the air supply fan, a rectangular main corridor connected to the connecting corridor, and a circular branch corridor connected to the rectangular main corridor. The air supply terminal is installed on the circular branch corridor.

[0008] The rectangular main corridor is installed on the top of the inner side of the high-temperature workshop.

[0009] The present invention also has the following technical features:

[0010] The air supply terminal includes an air supply terminal cylinder and guide vanes arranged inside the air supply terminal cylinder; the air supply terminal cylinder is also provided with a grid structure along its circumference.

[0011] The opening ratio of the grid is 40% to 55%, and the hole shape is circular or regular hexagonal.

[0012] The circular branch corridor is a hollow cylindrical structure with open ends and a diameter of d. The air supply terminal cylinder is a hollow cylindrical structure with one end closed and the other end connected to the circular branch corridor, and a diameter of D, where D = (1.1~1.3)d.

[0013] It also includes an automatic control system, which includes: an air supply terminal positioning module installed on the outside of the circular guide corridor, a crane position detection module installed on the crane, a central control module installed in the high-temperature workshop, an execution module installed on the circular guide corridor, and an air supply terminal status detection module installed on the rectangular main guide corridor corresponding to the position of the air supply terminal.

[0014] The present invention also provides a high-temperature workshop with a fixed-point trigger air-cooled guide corridor, including the workshop and the thermal reaction equipment installed in the workshop. The workshop is also equipped with a crane, and the crane is equipped with an overhead crane. It also includes the aforementioned fixed-point trigger air-cooled guide corridor for the overhead crane electrical control center of the high-temperature workshop.

[0015] Compared with the prior art, the beneficial technical effects of this invention are: (I) The fixed-point trigger-type air-cooled guide corridor for the overhead crane electrical control center of the present invention adopts local precision air supply technology, which only targets the overhead crane electrical control center for directional cooling, without the need for comprehensive cooling of the entire high-temperature workshop, thus greatly reducing the air volume demand and energy consumption, and solving the problems of excessive energy consumption and low cooling efficiency of traditional comprehensive ventilation systems in large workshops.

[0016] (II) The fixed-point trigger-type air-cooled guide corridor of the present invention for the electrical control center of the overhead crane in a high-temperature workshop achieves precise cooling of the cooling area of ​​the overhead crane through an automated control system and air supply terminal, effectively overcoming the airflow organization problem under complex working conditions such as concentrated heat source, large structural span, and many obstacles.

[0017] (III) The high-temperature workshop with fixed-point trigger air-cooled guide corridor of the present invention does not require the overhead crane to be transferred to a non-working area for cooling. It can achieve continuous cooling directly in the working state, avoid equipment shutdown due to overheating, significantly improve production continuity and work efficiency, and provide reliable protection for equipment operation in high-temperature industrial environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 for Figure 1 A side view structural diagram.

[0020] Figure 3 for Figure 2 A side view structural diagram.

[0021] Figure 4 for Figure 1 A partial structural diagram.

[0022] Figure 5 This is a schematic diagram showing the positional relationship between the overhead crane and the air supply terminal.

[0023] Figure 6 This is a schematic diagram of an automatic control system.

[0024] Figure 7 A comparison diagram of the temperature field before and after the air-cooled guide corridor device was put into use.

[0025] Figure 7 (a) is a windless, cold corridor.

[0026] Figure 7 (b) To enable the use of the air-cooled guide corridor.

[0027] The meanings of the labels in the attached diagram are as follows: 1-Air supply fan, 2-Air supply guide corridor, 3-Air supply terminal, 4-Automatic control system, 5-Workshop, 6-Heat reaction equipment, 7-Crane, 8-Overhead crane.

[0028] 2-1-Connecting guide corridor, 2-2-Rectangular main guide corridor, 2-3-Circular branch guide corridor.

[0029] 3-1-Air supply terminal cylinder, 3-2-Guide vanes.

[0030] 4-1-Air supply terminal positioning module, 4-2-Crane position detection module, 4-3-Central control module, 4-4-Execution module, 4-5-Air supply terminal status detection module.

[0031] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, all raw materials used in this invention are those known in the prior art.

[0033] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0034] Example 1: A point-triggered air-cooled guide corridor for the electrical control center of overhead cranes in high-temperature workshops, such as Figures 1-7 As shown, it includes a blower 1 installed on the top of the outside of the high-temperature workshop and a blower corridor 2 connected to the blower 1.

[0035] Multiple air supply terminals 3 are installed on the air supply corridor 2.

[0036] The air supply corridor 2 includes a connecting corridor 2-1 connected to the air supply fan 1, a rectangular main corridor 2-2 connected to the connecting corridor 2-1, and a circular branch corridor 2-3 connected to the rectangular main corridor 2-2. The air supply terminal 3 is installed on the circular branch corridor 2-3.

[0037] The rectangular main corridor 2-2 is installed on the top of the inner side of the high-temperature workshop.

[0038] The rectangular main guide corridor 2-2 is installed at the center of the top of workshop 5 and is connected to the air supply fan 1 through the connecting guide corridor 2-1. It is used for the main airflow transportation. The distance from the top of workshop 5 is H and the distance from both sides of workshop 5 is L.

[0039] The circular guide corridor 2-3 is installed at the air supply terminal 3. The air supply terminal 3 is equipped with guide vanes 3-2 to guide the vertical airflow into a horizontally diffused airflow, and together with the air supply terminal cylinder 3-1, forms an umbrella-shaped airflow to cover the electrical control center of the overhead crane 8.

[0040] The guide vane 3-2 is composed of several arc-shaped metal blades, which are evenly distributed in the circumferential direction. The included angle between adjacent blades is 30° to 60°, and they are arranged at an inclination of 10° to 30°. When airflow passes through, the guide vane 3-2 can change the airflow direction from vertical downward to horizontal diffusion in all directions, thereby expanding the airflow coverage area.

[0041] The air supply terminal 3 is coaxially and fixedly connected to the top of the circular support corridor 2-3. Multiple air supply components are arranged at intervals of 'a' along the longitudinal direction of the factory building, with a distance of 'h' from the overhead crane, to evenly distribute the airflow delivered by the circular support corridor 2-3. The number of components installed is determined according to the depth of workshop 5.

[0042] As a preferred embodiment: The air supply terminal 3 includes an air supply terminal cylinder 3-1 and guide vanes 3-2 arranged inside the air supply terminal cylinder 3-1.

[0043] The air supply terminal cylinder 3-1 is also provided with a grid structure along its circumference.

[0044] As a preferred embodiment: The opening ratio of the grid is 40% to 55%, and the hole shape is circular or regular hexagonal.

[0045] As a preferred embodiment: The circular support corridor 2-3 is a hollow cylindrical structure with open ends and a diameter of d. The air supply terminal cylinder 3-1 is a hollow cylindrical structure with one end closed and the other end connected to the circular support corridor 2-3, and a diameter of D.

[0046] Let D = (1.1~1.3)d.

[0047] The air delivery speed at the air delivery terminal Based on the crane width B, the height h of the air vent from the top of the crane, and the area of ​​the air supply vent. To confirm, you can calculate using the formula in the table below:

[0048]

[0049]

[0050] The air supply velocity is expressed in m / s.

[0051] The air velocity of the isothermal jet is in m / s.

[0052] This is the temperature correction factor.

[0053] The velocity at the jet tip is m / s.

[0054] This is the jet terminal velocity correction factor, ranging from 0.45 to 0.5.

[0055] For the air supply outlet area, m 2 .

[0056] The distance is m.

[0057] This is an empirical coefficient, ranging from 0 to 0.2.

[0058] It is an Archimedes number, ranging from 0.08 to 1.4.

[0059]

[0060] As a preferred embodiment: It also includes an automatic control system 4.

[0061] The automatic control system 4 includes an air supply terminal positioning module 4-1 installed on the outside of the circular guide corridor 2-3, a crane position detection module 4-2 installed on the crane, a central control module 4-3 installed in the high-temperature workshop, an execution module 4-4 installed on the circular guide corridor 2-3, and an air supply terminal status detection module 4-5 installed on the rectangular main guide corridor 2-2 corresponding to the position of the air supply terminal 3.

[0062] The air supply terminal positioning module 4-1 is an RFD reader / writer, the overhead crane position detection module 4-2 is an RFD tag, the central control module 4-3 is a PLC controller, the execution module 4-4 is an electric air valve, and the air supply terminal status detection module 4-5 is an LED indicator.

[0063] After the central control module 4-3 receives the instruction information, it immediately outputs a control signal to drive the corresponding air supply terminal 3 execution module 4-4 to adjust the airflow interruption. At the same time, it triggers the air supply terminal status detection module 4-5 of the air supply terminal 3 to work synchronously, collect and feedback the opening and closing status and operating parameters of the air supply terminal 3 in real time, and realize the monitoring of the working status of the air supply system.

[0064] The automatic control system 4's air supply terminal status detection module 4-5 and vehicle position detection module 4-2 are used to calibrate the spatial position parameters of each air supply terminal and collect the crane's operating position data in real time. After the data is collected, it is transmitted to the central control module 4-3, which issues a command to drive the 2-3 execution modules 4-4 adjacent to the current position of the crane 8 to complete the airflow interruption control and link the air supply terminal status detection module 4-5 to simultaneously monitor the operating condition of the air supply system.

[0065] Example 2: A high-temperature workshop with a fixed-point trigger-type air-cooled guide corridor includes a workshop 5 and a thermal reaction device 6 installed in the workshop 5. The workshop 5 is also equipped with a crane 7, and a gantry crane 8 is installed on the crane 7. It also includes a fixed-point trigger-type air-cooled guide corridor for the gantry crane electrical control center of the high-temperature workshop as described in Example 1.

[0066] The thermal reaction equipment 6 is a high-temperature roasting furnace and other thermal reaction equipment. During the production process, the high-temperature air continuously generated on the surface of the high-temperature roasting furnace is driven upward by the thermal buoyancy force, causing the electrical control center of the overhead crane 8 in the upper part of workshop 5 to be in a high-temperature environment of close to 80°C for a long time. This leads to overheating of electrical control components, interruption of equipment operation, or even shutdown failure. Therefore, the overhead crane 8 needs to be moved away from the high-temperature roasting furnace at regular intervals and placed in a non-working area to cool down before it can be put into operation again, which seriously affects production efficiency.

[0067] In this embodiment, outdoor fresh air is introduced from outside the factory as a cold source. Through a fixed air outlet array consisting of multiple air supply terminals 3 arranged at the center of the top of the workshop 5, the overhead crane 8 does not need to be moved to a non-working area. It only needs to be moved to the area below the air supply terminals 3 to cool down while working continuously, which significantly improves work efficiency.

[0068] The high-temperature workshop 5 has a span of 10-35m and a length of up to 100 meters. A crane 7, which moves longitudinally along the factory building, is installed on the top of workshop 5. A gantry crane 8 is mounted on the crane 7 and can move laterally along the crane 7's track, and can also move longitudinally along the factory building for over 100 meters, thus enabling large-span operations throughout the entire workshop 5.

[0069] like Figure 1 As shown, a large high-temperature roasting workshop has a span of 30 meters and a length of 105 meters. The surface of the roasting furnace at the bottom of the workshop generates temperatures exceeding 140°C, causing the ambient temperature of the overhead crane's electrical control center to exceed 80°C.

[0070] In this embodiment, clean, low-temperature air is delivered to the air supply terminal 3 at the top of the workshop through the air supply fan 1 arranged on the outside of the workshop wall and connected to the air supply corridor 2. The air supply is further combined with the guide vanes 3-2 to form an umbrella-shaped airflow, which accurately covers the overhead crane 8, and effectively cools down the machine while ensuring work efficiency.

[0071] The total flow rate of the air supply fan 1 in this embodiment is Q=378000m 3 / h air delivery speed =2 / The aforementioned air supply terminals 3 are evenly distributed in 20 units along the longitudinal direction of the factory building.

[0072] like Figure 2 The diagram shown is a cross-sectional view of workshop 5. The distance L between the air supply terminal 3 and the outer wall of workshop 5 is 15m.

[0073] like Figure 3 The diagram shows a detailed structural drawing of the air supply terminal 3. The air supply guide corridor 2 includes a rectangular main guide corridor 2-2, a circular branch guide corridor 2-3, and guide vanes 3-2. The diameter d of the circular branch guide corridor 2-3 is 1.0m. The guide vanes 3-2 consist of 6 arc-shaped metal blades, installed at the end of the circular branch guide corridor 2-3. The blades are evenly distributed circumferentially, with an included angle of 60° between adjacent blades, arranged at a 30° inclination. The air supply terminal 3 is an umbrella-shaped diffuser-type air supply assembly with a diameter D of 1.1m; the grille opening rate is 50%, the diameter of a single fine hole is 2mm, the hole shape is circular, and the fine holes are evenly distributed along the grille surface with a center-to-center distance of 3mm between adjacent holes.

[0074] like Figure 4 The diagram shown is a schematic of an umbrella-shaped airflow. The width B of the overhead crane is 3m.

[0075] like Figure 5 The diagram shows the location of the air supply corridor 2. Twenty air supply terminals 3 are evenly distributed along the longitudinal direction of the factory building, spaced 5m apart, 3m from the top H of workshop 5, and 0.5m from the top h of overhead crane 8.

[0076] Verification Example: Based on the aforementioned air supply system design scheme and implementation parameters, computational fluid dynamics (CFD) numerical simulation technology was used to verify the effect, constructing a physical model including the workshop, overhead crane, and air supply system. By giving boundary conditions, the temperature and velocity fields in the overhead crane's electrical control center area were simulated and analyzed.

[0077] Verification results: The cooling effect of this invention is verified as follows: Figure 7 As shown, the air supply terminal can achieve full coverage of the outer surface of the overhead crane's electrical control center and its surrounding area, which significantly reduces the operating temperature of the electrical control center. This proves that the present invention can effectively solve the problem of equipment shutdown caused by overheating of the electrical control center of the overhead crane in large high-temperature workshops.

[0078] The cooling effect of this invention is achieved through Figure 7 The comparison and verification are shown below. Figure 7 (a) is a simulated operating condition without an air-cooled guide corridor. Figure 7 (b) is a simulated working condition after the air-cooled guide corridor is activated.

[0079] When the guide corridor is not in use, the hot plume generated by the roasting furnace causes the temperature around the overhead crane's electrical control center to rise to 341-365K (68-92℃), with a local area below reaching about 353K (80℃) and the highest local temperature approaching 365K (92℃), posing a risk of shutdown due to overheating.

[0080] After the guide corridor is activated, low-temperature air at 293K (approximately 20℃) is directionally transported and diffused, forming a low-temperature airflow envelope around the electrical control center, reducing the temperature around the center to 317–341K (44–68℃). (Comparison) Figure 7 As can be seen from both sides, this invention can significantly reduce the range of high temperature influence, lower the temperature in local areas, effectively improve the working environment of the electrical control center, reduce the risk of component failure due to high temperature, and thus ensure the continuous and stable operation of the overhead crane in the high-temperature workshop.

[0081] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived by those skilled in the art within the scope of the technology disclosed in the present invention without creative effort are covered within the scope of protection of the present invention.

Claims

1. A point-triggered air-cooled guide corridor for the electrical control center of an overhead crane in a high-temperature workshop, characterized in that, It includes a blower (1) installed on the top of the outside of the high-temperature workshop and a blower corridor (2) connected to the blower (1); Multiple air supply terminals (3) are installed on the air supply corridor (2); The air supply corridor (2) includes a connecting corridor (2-1) connected to the air supply fan (1), a rectangular main corridor (2-2) connected to the connecting corridor (2-1), and a circular branch corridor (2-3) connected to the rectangular main corridor (2-2). The air supply terminal (3) is installed on the circular branch corridor (2-3). The rectangular main corridor (2-2) is installed on the top of the inner side of the high-temperature workshop.

2. The fixed-point trigger-type air-cooled guide corridor for the electrical control center of a high-temperature workshop crane as described in claim 1, characterized in that, The air supply terminal (3) includes an air supply terminal cylinder (3-1) and guide vanes (3-2) arranged inside the air supply terminal cylinder (3-1). The air supply terminal cylinder (3-1) is also provided with a grid structure along its circumference.

3. The fixed-point trigger-type air-cooled guide corridor for the electrical control center of a high-temperature workshop crane as described in claim 2, characterized in that, The opening ratio of the grid is 40% to 55%, and the hole shape is circular or regular hexagonal.

4. The point-triggered air-cooled guide corridor for the electrical control center of a high-temperature workshop crane as described in claim 2, characterized in that, The circular branch corridor (2-3) is a hollow cylindrical structure with open ends and a diameter of d. The air supply terminal cylinder (3-1) is a hollow cylindrical structure with one end closed and the other end connected to the circular branch corridor (2-3) and a diameter of D. Let D = (1.1~1.3)d.

5. The point-triggered air-cooled guide corridor for the electrical control center of a high-temperature workshop crane as described in claim 4, characterized in that, It also includes an automatic control system (4); The automatic control system (4) includes an air supply terminal positioning module (4-1) installed on the outside of the circular branch guide corridor (2-3), a crane position detection module (4-2) installed on the crane, a central control module (4-3) installed in the high-temperature workshop, an execution module (4-4) installed on the circular branch guide corridor (2-3), and an air supply terminal status detection module (4-5) installed on the rectangular main guide corridor (2-2) corresponding to the position of the air supply terminal (3).

6. A high-temperature workshop with a fixed-point trigger-type air-cooled guide corridor, comprising a workshop (5) and a thermal reaction device (6) installed in the workshop (5), wherein a crane (7) is also installed in the workshop (5), and an overhead crane (8) is installed on the crane (7), characterized in that, It also includes the point-triggered air-cooled guide corridor for the electrical control center of the overhead crane in a high-temperature workshop as described in any one of claims 1-5.

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