Automatic dehumidifying and heat dissipating device for cable trench

Abstract

A kind of cable trench automatic dehumidification heat dissipation device, including cable trench, the upper portion of one side of cable trench is opened vent, the upper portion of the other side of cable trench is communicated with ventilation pipe, the present application utilizes vent and ventilation pipe cooperation, let the height difference between the two sides of cable trench port form, due to airflow passing, the higher the airflow velocity is greater, let the airflow of ventilation pipe port portion be higher than the flow rate of vent portion, so that the air pressure of vent mouth portion is greater than the air pressure of ventilation pipe mouth portion, so that airflow can flow through the inside of cable trench under the action of pressure difference, so that not continuous power supply can utilize the air pressure difference between vent and ventilation pipe when airflow passes to ventilate cable trench.

Description

Technical Field

[0001] This invention relates to a heat dissipation device, and more specifically, to an automatic dehumidification and heat dissipation device for cable trenches. Background Technology

[0002] Existing automatic dehumidification and heat dissipation devices for cable trenches generally use electric fans for ventilation to reduce internal humidity, requiring continuous power to the motor for ventilation. For example, patent publication number CN218733139U discloses a waterproof ventilation structure for underground cable trenches, as shown in Figure 7. This device uses ventilation components, ventilation pipes, a motor, and fan blades to ventilate the cable trench, requiring continuous power to the motor for ventilation. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic dehumidification and heat dissipation device for cable trenches. It can utilize the cooperation of ventilation openings and ventilation pipes to create a height difference between the two ends of the cable trench. Since the airflow velocity is greater at higher levels, the airflow velocity at the ventilation pipe end is higher than that at the ventilation opening, thereby making the air pressure at the ventilation opening greater than that at the ventilation pipe end. This allows the airflow to flow through the inside of the cable trench under the action of the pressure difference, thus ventilating the cable trench by utilizing the air pressure difference between the ventilation opening and the ventilation pipe when the airflow passes through, without the need for continuous power supply.

[0004] To achieve the above objectives, the present invention employs the following technical solution: An automatic dehumidification and heat dissipation device for cable trenches includes a cable trench, with a ventilation opening on the upper part of one side of the cable trench and a ventilation pipe connected to the upper part of the other side of the cable trench. The lower end of the ventilation pipe is fitted into the cable trench, and the upper end of the ventilation pipe is higher than the lower end of the ventilation pipe. A first electric opening and closing device and a first cover plate are installed at the ventilation opening of the cable trench. The first cover plate can block the ventilation opening, and the first electric opening and closing device can control the opening and closing of the first cover plate. A second electric opening and closing device and a second cover plate are installed at the ventilation pipe of the cable trench. The second cover plate can block the upper opening of the ventilation pipe, and the second electric opening and closing device can control the opening and closing of the second cover plate.

[0005] To further achieve the purpose of the present invention, the following technical solution can also be adopted: a flow guide protrusion is provided on the side periphery of the ventilation pipe, the flow guide protrusion is a frustum-shaped shell with both the upper and lower bottom open, and the ventilation pipe passes through the middle of the flow guide protrusion.

[0006] The first electric opening and closing device includes a first electric push rod. The fixed end of the first electric push rod is connected to the inner wall of the cable trench. The push rod end of the first electric push rod is connected to a transmission rod. Two rotating rods are installed on one side of the transmission rod. The central axes of the two rotating rods are parallel to each other. One end of the rotating rod is hinged to the transmission rod, and the other end of the rotating rod is hinged to a crossbar. A tension spring is installed between the crossbar and the transmission rod. One end of the tension spring is connected to the crossbar, and the other end of the tension spring is connected to the transmission rod. A vertical rod is connected to one side of the crossbar. One end of the vertical rod is connected to a truncated pyramidal guide block. The upper part of the truncated pyramidal guide block is connected to a first cover plate. The truncated pyramidal guide block is an inverted truncated pyramidal structure. The truncated pyramidal guide block can be inserted and fitted with the ventilation opening. A cutter is connected to one side of the first cover plate.

[0007] The second electric opening and closing device includes a second electric push rod, the fixed end of which is connected to the inner wall of the cable trench, the push rod of which is connected to a truncated quadrangular guide block, and the upper part of the truncated quadrangular guide block is connected to a first cover plate.

[0008] A guide shaft is connected to one side of the inner wall of the cable trench, and a guide tube is connected to the bottom of the transmission rod. The guide tube is sleeved on the guide shaft and can slide on the guide shaft.

[0009] The advantages of this invention are as follows: This invention utilizes the combination of a vent and a vent pipe to create a height difference between the two ends of the cable trench. Since the airflow velocity increases with height, the airflow velocity at the vent pipe end is higher than that at the vent, resulting in a higher air pressure at the vent opening than at the vent pipe end. This allows the airflow to flow through the cable trench under the influence of the pressure difference, thus enabling ventilation of the cable trench without continuous power supply by utilizing the pressure difference between the vent and the vent pipe. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the first electric opening and closing device and the second electric opening and closing device of the present invention when closed; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of Part I; Figure 3 This is a schematic diagram of the first electric opening and closing device and the second electric opening and closing device of the present invention in the first step of opening. Figure 4 for Figure 3 Enlarged structural diagram of Part II; Figure 5 This is a schematic diagram of the structure of the first electric opening and closing device and the second electric opening and closing device of the present invention in the second step of opening. Figure 6 for Figure 5 A schematic diagram of the enlarged structure of Part III; Figure 7 This is a schematic diagram of the structure of the prior art patent publication number: CN218733139U. Detailed Implementation

[0011] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0012] An automatic dehumidification and heat dissipation device for cable trenches, such as Figures 1-6 As shown, the cable trench includes a cable trench 1, with a ventilation opening 3 on the upper part of one side of the cable trench 1, and a ventilation pipe 10 connected to the upper part of the other side of the cable trench 1. The lower end of the ventilation pipe 10 is engaged with the cable trench 1, and the upper end of the ventilation pipe 10 is higher than the lower end of the ventilation pipe 10. A first electric opening and closing device and a first cover plate 2 are installed at the ventilation opening 3 of the cable trench 1. The first cover plate 2 can block the ventilation opening 3, and the first electric opening and closing device can control the opening and closing of the first cover plate 2. A second electric opening and closing device and a second cover plate 9 are installed at the ventilation pipe 10 of the cable trench 1. The second cover plate 9 can block the upper opening of the ventilation pipe 10, and the second electric opening and closing device can control the opening and closing of the second cover plate 9.

[0013] This invention utilizes the cooperation of ventilation opening 3 and ventilation pipe 10 to create a height difference between the two ends of the cable trench 1. Since the airflow velocity is greater at higher levels, the airflow velocity at the end of ventilation pipe 10 is higher than that at ventilation opening 3. This results in the air pressure at the opening of ventilation opening 3 being greater than that at the opening of ventilation pipe 10. As a result, the airflow can flow through the inside of the cable trench 1 under the action of the pressure difference. Thus, the cable trench 1 can be ventilated by the air pressure difference between ventilation opening 3 and ventilation pipe 10 when the airflow passes through, without the need for continuous power supply.

[0014] Specific material selection and feasibility analysis: The samples we actually manufactured used the accompanying drawings as blueprints, and were implemented according to the proportions and assembly methods of each component in the drawings. The connections used were common methods such as strong adhesive bonding, welding, riveting, flange connections, and integral molding connections. In actual manufacturing, the corresponding connection method, thickness, and strength of the connection points can be selected according to the actual connection strength requirements without creative innovation. This invention only requires power to the first electric push rod 8 and the second electric push rod 12 when opening and closing the first cover plate 2 and the second cover plate 9. The upper part of the second cover plate 9 is connected to a photosensitive sensor 18 and a humidity sensor 19. The photosensitive sensor 18 and the humidity sensor 19 can detect the ambient light level and humidity, thus facilitating remote judgment of whether it is raining. When it is determined to be raining, personnel can remotely control the first electric push rod 8 and the second electric push rod 12 to close the first cover plate 2 and the second cover plate 9. The components used in this embodiment, specifically the electric linear actuator, are selected as follows: Brand: Longxiang; Model: 200mm stroke, 1000N thrust, 24V voltage; Power supply: 24V / 4A switching power supply; Brand: Mean Well; Model: [Missing information - likely a brand name or model number]. The electric linear actuator of this invention can be a Longxiang brand, with a 200mm stroke, 1000N thrust, and 24V voltage. It has a corresponding electric linear actuator motor linear driver and power supply. This application only utilizes the push-pull function of the electric linear actuator. In actual use, the electric linear actuator can be manually opened and closed according to actual needs via a drive device to achieve the basic functions of this application. The automatic control circuit of the electric linear actuator can be designed by those skilled in electrical control without creative invention, and this does not limit the implementation of this application. Example

[0015] An automatic dehumidification and heat dissipation device for cable trenches, such as Figures 1-6 As shown, the system includes a cable trench 1, with a ventilation opening 3 on the upper part of one side of the cable trench 1. A ventilation pipe 10 is connected to the upper part of the other side of the cable trench 1. The lower end of the ventilation pipe 10 engages with the cable trench 1, and the upper end of the ventilation pipe 10 is higher than its lower end. A first electric opening and closing device and a first cover plate 2 are installed at the ventilation opening 3 in the cable trench 1. The first cover plate 2 can seal the ventilation opening 3, and the first electric opening and closing device can control the opening and closing of the first cover plate 2. A second electric opening and closing device and a second cover plate 9 are installed at the ventilation pipe 10 in the cable trench 1. The second cover plate 9 can seal the upper opening of the ventilation pipe 10, and the second electric opening and closing device can control the opening and closing of the second cover plate 9. A flow guide protrusion 11 is provided on the side periphery of the ventilation pipe 10. The flow guide protrusion 11 is a frustum-shaped shell with openings at both the upper and lower bottoms, and the ventilation pipe 10 passes through the middle of the flow guide protrusion 11.

[0016] The guide protrusion 11 of the present invention can guide the airflow, allowing the airflow to pass through the upper opening of the ventilation pipe 10. Under the guidance of the guide protrusion 11, the flow velocity of the horizontally passing airflow at the upper opening of the ventilation pipe 10 will increase, thereby further reducing the air pressure at the upper opening of the ventilation pipe 10, making the air pressure at the ventilation port 3 less than the air pressure at the upper opening of the ventilation pipe 10, thereby forming airflow inside the cable trench 1, ventilating the inside of the cable trench 1, and reducing the humidity inside the cable trench 1. Example

[0017] An automatic dehumidification and heat dissipation device for cable trenches, such as Figures 1-6 As shown, the cable trench includes a cable trench 1, with a ventilation opening 3 on the upper part of one side of the cable trench 1, and a ventilation pipe 10 connected to the upper part of the other side of the cable trench 1. The lower end of the ventilation pipe 10 is engaged with the cable trench 1, and the upper end of the ventilation pipe 10 is higher than the lower end of the ventilation pipe 10. A first electric opening and closing device and a first cover plate 2 are installed at the ventilation opening 3 of the cable trench 1. The first cover plate 2 can block the ventilation opening 3, and the first electric opening and closing device can control the opening and closing of the first cover plate 2. A second electric opening and closing device and a second cover plate 9 are installed at the ventilation pipe 10 of the cable trench 1. The second cover plate 9 can block the upper opening of the ventilation pipe 10, and the second electric opening and closing device can control the opening and closing of the second cover plate 9. The first electric opening and closing device includes a first electric push rod 8. The fixed end of the first electric push rod 8 is connected to the inner wall of the cable trench 1. The push rod end of the first electric push rod 8 is connected to the transmission rod 6. Two rotating rods 5 are installed on one side of the transmission rod 6. The central axes of the two rotating rods 5 are parallel to each other. One end of the rotating rod 5 is hinged to the transmission rod 6, and the other end of the rotating rod 5 is hinged to the crossbar 4. A tension spring 7 is installed between the crossbar 4 and the transmission rod 6. One end of the tension spring 7 is connected to the crossbar 4, and the other end of the tension spring 7 is connected to the transmission rod 6. One side of the crossbar 4 is connected to a vertical rod 14. One end of the vertical rod 14 is connected to a truncated pyramidal guide block 13. The upper part of the truncated pyramidal guide block 13 is connected to a first cover plate 2. The truncated pyramidal guide block 13 is an inverted truncated pyramidal structure. The truncated pyramidal guide block 13 can be inserted and fitted with the vent 3. One side of the first cover plate 2 is connected to a cutter 15.

[0018] The first electric opening and closing device of the present invention can horizontally push the first cover plate 2, transmission rod 6, etc. using the first electric push rod 8 to control the opening and closing of the first cover plate 2. When the first cover plate 2 is opened, in Figure 1 In the middle, the first electric push rod 8 drives the transmission rod 6 to move to the right. At this time, the side slope of the truncated pyramid guide block 13 engages with the outer edge of the vent 3. Under the guidance of the guide roller 16, the first cover plate 2 and the truncated pyramid guide block 13 are pushed upward. This drives the rotating rod 5 to rotate, thereby widening the distance between the crossbar 4 and the transmission rod 6. After the first electric push rod 8 opens the first cover plate 2 and the transmission rod 6, the first cover plate 2 reaches... Figure 5In this state, the upper plate of the cable trench 1 can be inserted and engaged with the U-shaped structure formed by the truncated pyramid guide block 13, the longitudinal rod 14, and the transverse rod 4. When the first cover plate 2 is closed, the first electric push rod 8 pushes the first cover plate 2 to the left, thereby moving the device from... Figure 5 State transformation Figure 3 In this state, the first electric push rod 8 further pushes the first cover plate 2 to the left, and when the first cover plate 2 reaches... Figure 1 When in position, the tension spring 7 pulls the first cover plate 2 downward with the tension force, so that the quadrangular truncated guide block 13 is inserted and engaged with the vent 3. At this time, the first cover plate 2 is engaged with the upper opening of the cable trench 1 with a certain pressure, and the first cover plate 2 closes the vent 3 of the cable trench 1. Example

[0019] An automatic dehumidification and heat dissipation device for cable trenches, such as Figures 1-6 As shown, the cable trench includes a cable trench 1. A ventilation opening 3 is located on the upper part of one side of the cable trench 1. A ventilation pipe 10 is connected to the upper part of the other side of the cable trench 1. The lower end of the ventilation pipe 10 engages with the cable trench 1, and the upper end of the ventilation pipe 10 is higher than its lower end. A first electric opening and closing device and a first cover plate 2 are installed at the ventilation opening 3 in the cable trench 1. The first cover plate 2 can seal the ventilation opening 3, and the first electric opening and closing device can control the opening and closing of the first cover plate 2. A second electric opening and closing device and a second cover plate 9 are installed at the ventilation pipe 10 in the cable trench 1. The second cover plate 9 can seal the upper opening of the ventilation pipe 10, and the second electric opening and closing device can control the opening and closing of the second cover plate 9. The second electric opening and closing device includes a second electric push rod 12. The fixed end of the second electric push rod 12 is connected to the inner wall of the cable trench 1, and the push rod of the second electric push rod 12 is connected to a truncated pyramid guide block 13. The upper part of the truncated pyramid guide block 13 is connected to the first cover plate 2.

[0020] The second electric push rod 12 of the present invention can push the first cover plate 2 up and down, thereby controlling the opening and closing of the first cover plate 2.

[0021] A guide shaft 20 is connected to one side of the inner wall of the cable trench 1, and a guide tube 21 is connected to the bottom of the transmission rod 6. The guide tube 21 is sleeved on the guide shaft 20 and can slide on the guide shaft 20. The guide shaft 20 and the guide tube 21 of the present invention cooperate to guide the transmission rod 6 and share the force in the vertical direction of the first electric push rod 8.

[0022] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention.

Claims

1. An automatic dehumidification and heat dissipation device for cable trenches, characterized in that: The cable trench (1) includes a vent (3) on one side of the upper part of the cable trench (1) and a ventilation pipe (10) on the other side of the upper part of the cable trench (1). The lower end of the ventilation pipe (10) is connected to the cable trench (1), and the upper end of the ventilation pipe (10) is higher than the lower end of the ventilation pipe (10). The cable trench (1) is equipped with a first electric opening and closing device and a first cover plate (2) at the vent (3). The first cover plate (2) can block the vent (3). The first electric opening and closing device can control the opening and closing of the first cover plate (2). The cable trench (1) is equipped with a second electric opening and closing device and a second cover plate (9) at the vent (10). The second cover plate (9) can block the upper opening of the vent (10). The second electric opening and closing device can control the opening and closing of the second cover plate (9). The first electric opening and closing device includes a first electric push rod (8), the fixed end of which is connected to the inner wall of the cable trench (1), the push rod end of which is connected to a transmission rod (6), two rotating rods (5) are installed on one side of the transmission rod (6), the central axes of the two rotating rods (5) are parallel to each other, one end of the rotating rod (5) is hinged to the transmission rod (6), the other end of the rotating rod (5) is hinged to the crossbar (4), and a tension spring is installed between the crossbar (4) and the transmission rod (6). 7) One end of the tension spring (7) is connected to the crossbar (4), and the other end of the tension spring (7) is connected to the transmission rod (6). One side of the crossbar (4) is connected to the longitudinal rod (14), and one end of the longitudinal rod (14) is connected to the truncated pyramid guide block (13). The upper part of the truncated pyramid guide block (13) is connected to the first cover plate (2). The truncated pyramid guide block (13) is an inverted truncated pyramid structure. The truncated pyramid guide block (13) can be inserted and matched with the vent (3). One side of the first cover plate (2) is connected to the cutter (15). The ventilation pipe (10) is provided with a flow guide protrusion (11) on its side. The flow guide protrusion (11) is a frustum-shaped shell with openings at both the top and bottom. The ventilation pipe (10) passes through the middle of the flow guide protrusion (11). The inner wall of the cable trench (1) is connected to a guide shaft (20), and the bottom of the transmission rod (6) is connected to a guide tube (21). The guide tube (21) is sleeved on the guide shaft (20) and can slide on the guide shaft (20).

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