An installation environment control device and installation method for a cable joint along a cross-sea bridge

Abstract

The present invention discloses an installation environment control device and an installation method for a cable joint along a cross-sea bridge, which relates to the field of cable installation construction equipment. The operating environment on a cross-sea bridge is complex, with sea breezes accompanied by high humidity, heavy salt mist water vapor, and large day-night temperature differences. The existing cable joint working environment control devices are relatively large in size and cannot pass through the narrow gaps of the cable trays, resulting in too low efficiency for cable joint operations that require multi-point intermittent continuous welding. The present invention includes an electric tractor device, a sealed cabin device, and an environment control device. The electric tractor device is detachably connected to the sealed cabin device, and the environment control device is arranged inside the sealed cabin device. The environment control device is remotely managed through a wireless connection. It effectively realizes the ideal operating environment for cable joint operations, has a high degree of equipment integration, can occupy a relatively small space, is convenient for passing through the narrow gaps of the cross-sea bridge cable trays, is convenient for movement and multi-point intermittent layout, effectively improves the cable joint operation speed, and shortens the operation time.

Description

Technical Field

[0001] The invention relates to the field of cable installation construction equipment, and in particular to an installation environment control device for a cable joint of a cross-sea bridge and an installation method. Background Art

[0002] For long-distance high-voltage cables, the installation of intermediate joints is essential. Since the intermediate joints of cables involve many issues such as electric field control, interface processing, heat dissipation, aging, etc., they are weak links in the overall operation of the cable. Therefore, the control of the installation process is also relatively strict, especially for cables with voltage levels above 110kV. The main cause of cable joint accidents is that the environment does not meet the requirements during the installation of the joints. For example, moisture and small impurities are attached to the surface of the cable insulation during installation, which can easily cause the main insulation of the cable to discharge when the cable is in operation.

[0003] Due to the complex working environment on the cross-sea bridge, the sea breeze is accompanied by high humidity, heavy salt fog and water vapor, and the temperature difference between day and night varies greatly. Therefore, there is not much time in a year suitable for the construction of cross-sea bridge power transmission, which seriously affects the construction period. Some patents have proposed cable joint working environment control equipment, but these systems are large in size and cannot pass through the narrow gaps of the bridge frame, or the assembly time is long. The efficiency is too low for cable joint operations that require multi-point interval continuous welding, or they are used in conventional dusty environments and are not suitable for offshore environments. Developing a set of environmental control equipment that can be quickly assembled and transferred in the narrow steel platform of the cross-sea bridge to control the construction environment of the cable joints on the cross-sea bridge can not only greatly improve the environmental quality of the cable joints and meet the process indicators, but also greatly increase the working time and ensure the progress of the project. Summary of the invention

[0004] The technical problem to be solved and the technical task proposed by the present invention are to improve and perfect the existing technical solutions, and provide an environmental control device for installing a cable connector on a cross-sea bridge, so as to speed up the operation and shorten the operation time. To this end, the present invention adopts the following technical solutions.

[0005] An installation environment control device for submarine cable joints of a cross-sea bridge, comprising an electric tractor device that travels above the cable to be processed, a movable sealed cabin device for realizing a sealed environment, and an environment control device for monitoring temperature, humidity, air quality, and illuminance. The electric tractor device is detachably connected to the sealed cabin device. The environment control device is arranged inside the sealed cabin device, and the environment control device is wirelessly connected to a remote management device for visual supervision. The electric tractor device that can travel above the cable to be processed can realize the traction and movement of the sealed cabin device, facilitating the layout in the operation area. By realizing adjustable monitoring of temperature, humidity, air quality, and illuminance inside the sealed cabin device, an ideal operation environment for cable joint operations can be effectively achieved. The device has a high integration level, can occupy a small space, is convenient to pass through the narrow gaps of the cross-sea bridge bridge frame, is convenient for movement and multi-point spaced layout, and can realize the simultaneous operation of cable joint operations with multi-point spaced continuous welding, effectively improving the cable joint operation speed and shortening the operation time.

[0006] As a preferred technical measure: The sealed cabin device includes a square base, an integrated inflatable sealed cabin, a mobile wheel set, a cable joint installation equipment placement platform, an environment control equipment placement platform, an equipment external unit placement platform, a power distribution cabinet, and a control cabinet. The mobile wheel set is arranged at the bottom of the left and right sides of the square base. The cable joint installation equipment placement platform and the environment control equipment placement platform are respectively arranged on the left and right sides of the square base. The equipment external unit placement platform is arranged below the environment control equipment placement platform. The power distribution cabinet is arranged at the front end of the cable joint installation equipment placement platform. The control cabinet is arranged at the front end of the environment control equipment placement platform. Rectangular card slot columns are arranged at the upper ends of the left and right sides of the square base. The integrated inflatable sealed cabin is connected to the square base through the rectangular card slot columns. The cable joint installation equipment placement platform, the environment control equipment placement platform, the power distribution cabinet, and the control cabinet are all located inside the integrated inflatable sealed cabin. The structure of the sealed cabin device is effectively realized.

[0007] As a preferred technical measure: The input voltage of the power distribution cabinet is 380V alternating current. The input line is first connected in parallel to the rear end of the cable joint installation equipment placement platform before entering the molded case circuit breaker, serving as the input power supply for the lower sealed cabin 2. After passing through the molded case circuit breaker, the input line is converted into multiple 380V and 220V alternating current lines for use by operating equipment and control equipment. Different sockets are used for 380V and 220V alternating current to avoid misoperation. The power supply access required for the operation is realized.

[0008] As a preferred technical means: The electric tractor device uses an electric flatbed truck. The ground clearance at the middle bottom of the electric flatbed truck is ≥20 cm, which is greater than the diameter of the cable under the electric flatbed truck. The suspension height of the square frame base is ≥50 cm for cable routing. The height of the electric flatbed truck is less than the suspension height of the square frame base, and it can pass under the square frame base. This facilitates cable routing and the movement of the electric flatbed truck, and is conducive to the multi-point layout of operating equipment.

[0009] As a preferred technical means: Anti-collision strips are provided around the frame of the electric flatbed truck; lifting rings are provided at the four corners of the upper surface of the electric flatbed truck; a weight compartment that can be opened and closed is provided in the middle of the upper surface of the electric flatbed truck; an interconnection device for detachable connection is provided at the rear of the electric flatbed truck and the front of the sealed cabin device. The anti-collision strips prevent impact damage to the equipment caused by collisions during installation and operation, improving safety. Lifting rings are installed with adjustable-length slings for transporting the vehicle from the bridge gap to the working area. By adding weights to the weight compartment, the frictional force is increased on the inclined bridge surface, improving the traction power output. The interconnection device realizes the connection between the rear of the electric flatbed truck and the sealed cabin device and the cascading of the sealed cabin devices, realizing the mobile traction of the sealed cabin device and effectively realizing the operating ability of the electric flatbed truck.

[0010] As a preferred technical means: Four hook holes are provided at the corners on the left and right outer sides of the square frame base. Four fixing rings are provided on the left and right outer sides of the top of the integrated inflatable cabin wall. The positions of the four fixing rings correspond one-to-one with the positions of the four hook holes. The hook holes and the fixing rings are connected by a cable. The four hook holes are used when lifting and placing the base and can also ensure that the integrated inflatable cabin wall can be better fixed on the square frame base.

[0011] As a preferred technical means: The integrated inflatable seal cabin uses 21OD Oxford cloth material. Self-adhesive straps are installed at both the front end and the rear end of the integrated inflatable seal cabin. The material is firm and reliable. The self-adhesive straps are convenient for splicing the integrated inflatable seal cabin of the lower section of the seal cabin and can also install PVC soft plastic curtain to form a closed space.

[0012] As a preferred technical means: the environmental control device includes a temperature monitoring module, a humidity monitoring module, an air quality monitoring module, an audible and visual alarm, an illuminance monitoring module, a PLC, and a human-machine interaction panel. The temperature monitoring module includes a temperature sensor, an indoor air conditioner, and an outdoor air conditioner. The temperature sensor is arranged inside the integrated inflatable sealed cabin. The indoor air conditioner is arranged on the environmental control equipment placement platform, and the outdoor air conditioner is arranged on the equipment outdoor placement platform. The humidity monitoring module includes a humidity sensor and an internal circulation dehumidifier. The humidity sensor is arranged inside the integrated inflatable sealed cabin, and the internal circulation dehumidifier is arranged on the environmental control equipment placement platform. The air quality monitoring module includes an air filter, an air quality sensor, and an air filtration fan. The air filter is arranged on the equipment outdoor placement platform. The air quality sensor includes methane CH4, carbon monoxide CO, hydrogen sulfide H2S, fine particulate matter PM2.5, and oxygen O2 detection sensors, which are arranged inside the sealed cabin. The air filtration fan is arranged on the environmental control equipment placement platform, and the air filtration fan is connected to the air filter through a flange port. The illuminance monitoring module includes an illuminance sensor, a dimming controller, and multiple adjustable lighting lamps. The illuminometer is arranged inside the sealed cabin, and the dimming controller is arranged inside the control cabinet. The temperature sensor, humidity sensor, air quality sensor, illuminance sensor, audible and visual alarm, and human-machine interaction panel are all connected to the PLC. The PLC is connected to the air conditioner, internal circulation dehumidifier, and air filtration fan through a relay to achieve start-stop control. The PLC is connected to a remote management device through a wireless communication module. The PLC, relay, and wireless communication module are all arranged inside the control cabinet. The human-machine interaction panel and the audible and visual alarm are arranged on the control cabinet door. A circuit breaker is provided at the power access end inside the control cabinet. It effectively realizes the monitoring and control of the working environment.

[0013] As a preferred technical means: the temperature sensor, humidity sensor, air quality sensor, and illuminance sensor are arranged in multiple groups and at multiple points in a sensor group manner on the side of the environmental control equipment placement platform, the middle operation area, and the side of the cable joint installation equipment placement platform inside the integrated inflatable sealed cabin, and are all arranged on movable brackets. Through the multiple-group and multiple-point method distributed at different positions, the monitoring of air quality can be effectively realized.

[0014] As a preferred technical measure: The air filter adopts a multi-layer structure, including a solid particle filter layer, a water-vapor separation layer, and a salt spray filter layer. The solid particle filter layer adopts multi-layer non-woven fabric filters, and the filters are arranged in a plug-in form on the outermost layer of the solid particle filter. The water-vapor separation layer adopts a multi-layer louver structure and is cooled by an external circulation dehumidifying condenser. The external circulation dehumidifying condenser is arranged on the external equipment installation platform. A one-way diversion pipe for discharging condensed water to the outside is provided at the lower end of the louver structure. The salt spray filter layer adopts a three-layer fiber filter of coarse, medium, and high efficiency. The fiber filter adopts fiber filter paper with strong hydrophobicity. The solid particle filter layer, the water-vapor separation layer, and the salt spray filter layer all adopt a plug-in fixing method. When replacing the filter element, the fixing sandwich is loosened by a butterfly nut, and after replacing the filter layer, the butterfly nut is tightened to seal the filter channel. It can effectively achieve air filtration, and the plug-in fixing method is convenient for maintenance and replacement.

[0015] As a preferred technical measure: The mobile wheel set adopts universal wheels with brakes. It is convenient for the movement of the sealed cabin device and the fixation of the position during operation.

[0016] As a preferred technical measure: The interconnection device adopts a single-axis connection device, including a plug pin and a socket plate seat. The socket plate seat at the front end of the square base is located on the upper surface of the base cross bar of the square base. When two sealed cabin devices are cascaded, the socket plate seat of the subsequent sealed cabin device is located on the upper surface of the front-stage square base and is fixed by a plug pin. The structure is simple, and during the cascading process of the sealed cabin device, the socket plate seat will not contact the front-stage sealed cabin.

[0017] As a preferred technical measure: The rectangular card slot bar adopts a grid structure and a segmented installation structure. The rectangular card slot bar is fixed to the square base by countersunk head screws. Adopting a grid structure can reduce the weight while ensuring the structural strength, and the connection and disassembly are convenient by fixing with countersunk head screws.

[0018] Another object of the present invention is to provide a device installation method, which includes the following steps:

[0019] S1) Hoist each part of the device to the vicinity of the operation area;

[0020] S2) Place the end of the square base with the single-axis connection device facing the subsequent operation area, and fix the rectangular card slot bar to the square base with countersunk head screws;

[0021] S3) Inflate the integrated inflatable sealed cabin for 5 minutes until it can expand into a shape and has a certain supporting ability;

[0022] S4) Embed the integrated inflatable sealed cabin into the rectangular card slot;

[0023] S5) Inflate the integrated inflatable sealed cabin fully;

[0024] S6) Connect the fixing ring on the integrated inflatable seal cabin and the hook hole on the square frame base with a cable rope to complete the fixed installation of the integrated inflatable seal cabin on the square frame base;

[0025] S7) Install the mobile wheel set at the bottom of the square frame base and lock the brake structure;

[0026] S8) Install the cable joint installation equipment placement platform, the environmental control equipment placement platform, and the equipment outdoor unit placement platform on the square frame base;

[0027] S9) Install the power distribution cabinet and the control cabinet on the square frame base;

[0028] S10) Connect the branched sockets to the power distribution cabinet through aviation control plugs;

[0029] S11) Install the indoor unit of the air conditioner, the internal circulation dehumidifier, and the air filtration fan on the environmental control equipment placement platform;

[0030] S12) Install the outdoor unit of the air conditioner, the external circulation dehumidification condenser, the solid particle air filtration layer, the water vapor separation layer, and the salt mist filtration layer on the equipment outdoor unit placement platform;

[0031] S13) Fix the pipelines of the indoor unit of the air conditioner and the outdoor unit of the air conditioner on the environmental control equipment placement platform through flanges, and connect the RS485 control line of the indoor unit of the air conditioner to the control cabinet through a 2-core aviation control plug;

[0032] S14) Fix the outlet pipeline of the external circulation dehumidification condenser on the environmental control equipment placement platform through a flange, connect the air outlet of the external circulation dehumidification condenser to the water vapor separation layer, and connect the start-stop control signal line of the external circulation dehumidification condenser to the control cabinet through a 2-core aviation control plug;

[0033] S15) Fix the pipeline of the air filtration fan on the environmental control equipment placement platform through a flange, and connect the start-stop control signal line of the air filtration fan to the control cabinet through a 2-core aviation control plug;

[0034] S16) Connect each sensor to the control cabinet through a 16-core aviation control plug;

[0035] S17) After completing the construction of the above seal cabin unit, according to the actual operation space requirements, complete the construction of the remaining seal cabin units in the same steps;

[0036] S18) Connect the single-axis connection device of the electric flatbed truck with the single-axis connection device of the square frame base, open the counterweight cabin of the electric flatbed truck, put sandbags in it, and control the electric flatbed truck to tow the seal cabin device to the operation area through a remote control;

[0037] S19) Control the electric flatbed truck to pass under the in-place sealed cabin device, and tow the remaining sealed cabin devices to the operation area one by one;

[0038] S20) Lay a sealing film at the bottom of the square base, and lay a fireproof pad on the sealing film, and place the cable on the fireproof pad;

[0039] S21) Install PVC soft plastic door curtains on the outermost two sealed cabin devices through self-adhesive straps, and splice the sealed cabins with self-adhesive straps;

[0040] S22) Install the required equipment for cable joint installation on the equipment placement platform for cable joint installation;

[0041] S23) Power on the power distribution cabinet of the sealed cabin device, power on the control cabinet, power on the equipment on the equipment placement platform for cable joint installation, power on the equipment on the equipment placement platform for environmental control equipment, power on the equipment on the equipment placement platform for the external unit of the equipment, and power on each sensor module;

[0042] S24) Start the PLC, automatically start the external circulation dehumidification condenser and the air filtration fan, set the expected values of temperature, humidity, and illuminance inside the sealed cabin, and after the PLC collects the sensor data, automatically control the air conditioner, the internal circulation dehumidifier, and the dimming controller to work;

[0043] S25) The PLC regularly packages the sensor data and the equipment operation status data and sends them to the remote management device at the specified IP and port through the 4G wireless router module;

[0044] S26) After receiving the data, the remote management device parses the data according to the protocol, visualizes the data, and displays it on the control screen.

[0045] Beneficial effects: This equipment can conveniently move and arrange above the cable to be processed, and can effectively realize the ideal working environment for cable joint operation by adjusting and monitoring the temperature, humidity, air quality, and illuminance inside the sealed cabin device. The equipment has a high integration level, can occupy a small space, is convenient to pass through the narrow gaps of the cross-sea bridge bridge, is convenient for moving and multi-point interval layout, realizes the simultaneous cable joint operation of multi-point interval continuous welding, can effectively improve the cable joint operation speed, and shorten the operation time. Description of the Drawings

[0046] Figure 1 It is a schematic structural diagram of the present invention.

[0047] Figure 2 It is a schematic structural diagram of the electric flatbed truck in the present invention.

[0048] Figure 3 It is a schematic diagram of the sealed cabin device after removing the integrated inflatable seal cabin of the present invention.

[0049] Figure 4 It is a schematic layout diagram of the environmental control device of the present invention.

[0050] In the figure: 1, electric flatbed truck; 2, sealed cabin device; 3, environmental control device; 101, lifting ring; 102, counterweight cabin; 201, square base; 202, integrated inflatable sealed cabin; 203, mobile wheel set; 204, cable joint installation equipment placement platform; 205, environmental control equipment placement platform; 206, equipment outdoor unit placement platform; 207, power distribution cabinet; 208, control cabinet; 209, rectangular card slot bar; 210, hook hole; 211, fixing ring; 212, socket plate seat; 213, bolt; 301, air conditioner indoor unit; 302, air conditioner outdoor unit; 303, internal circulation dehumidifier; 304, external circulation dehumidification condenser; 305, air filtration fan; 306, solid particle filtration layer; 307, water-vapor separation layer; 308, salt mist filtration layer; 309, sensor group. Specific embodiments

[0051] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings of the specification.

[0052] As Figures 1-4 shown, an environmental control device for installing a cable joint along a cross-sea bridge includes an electric tractor device traveling above the cable to be processed, a movable sealed cabin device 2 for realizing a sealed environment, and an environmental control device 3 for realizing monitoring of temperature, humidity, air quality, and illuminance. The electric tractor device is detachably connected to the sealed cabin device 2, and the environmental control device 3 is arranged in the sealed cabin device 2. The environmental control device 3 is wirelessly connected to a remote management device for visual supervision.

[0053] To implement the structure of the sealed cabin device 2, the sealed cabin device 2 includes a square base 201, an integral inflatable sealed cabin 202, a mobile wheel set 203, a cable joint installation equipment placement platform 204, an environmental control equipment placement platform 205, an equipment external unit placement platform 206, a power distribution cabinet 207, and a control cabinet 208. The mobile wheel set 203 is arranged at the bottom of the left and right sides of the square base 201. The cable joint installation equipment placement platform 204 and the environmental control equipment placement platform 205 are respectively arranged on the left and right sides of the square base 201. The equipment external unit placement platform 206 is arranged below the environmental control equipment placement platform 205. The power distribution cabinet 207 is arranged at the front end of the cable joint installation equipment placement platform 204. The control cabinet 208 is arranged at the front end of the environmental control equipment placement platform 205. Rectangular slot columns 209 are arranged at the upper ends of the left and right sides of the square base 201. The integral inflatable sealed cabin 202 is connected to the square base 201 through the rectangular slot columns 209. The cable joint installation equipment placement platform 204, the environmental control equipment placement platform 205, the power distribution cabinet 207, and the control cabinet 208 are all located inside the integral inflatable sealed cabin 202. The structure of the sealed cabin device 2 is effectively implemented.

[0054] To achieve the power access required for the operation, the input voltage of the power distribution cabinet 207 is 380V alternating current. The input line is first connected in parallel to the rear end of the cable joint installation equipment placement platform 204 before entering the molded case circuit breaker, serving as the input power supply for the lower sealed cabin 2. After passing through the molded case circuit breaker, the input line is converted into multiple 380V and 220V alternating current lines for use by the operation equipment and the control equipment. Different sockets are used for 380V and 220V alternating current to avoid misoperation. The power access required for the operation is achieved.

[0055] To facilitate wire routing and the movement of the electric flatbed truck 1 through, the electric tractor device uses the electric flatbed truck 1. The ground clearance at the middle bottom of the electric flatbed truck 1 is 20 cm, which is greater than the diameter of the cable below the electric flatbed truck 1, facilitating walking and moving on the cable. The suspended height of the square base 201 is 50 cm for wire routing. The height of the electric flatbed truck 1 is less than the suspended height of the square base 201, and it can pass under the square base 201. It is convenient for wire routing and the movement of the electric flatbed truck 1 through, and it is convenient for multi-point layout of operation equipment.

[0056] To realize the operation ability of the electric flatbed truck 1, anti-collision strips are provided around the frame of the electric flatbed truck 1; lifting rings 101 are provided at the four corners of the upper surface of the electric flatbed truck 1; a detachable counterweight compartment 102 is provided in the middle of the upper surface of the electric flatbed truck 1; an interconnection device for detachable connection is provided at the rear of the electric flatbed truck 1 and the front of the sealed cabin device 2. The anti-collision strips can avoid impact damage to the equipment caused by collision during installation and operation, improving safety. The lifting rings 101 are installed with straps of adjustable length, which are used to carry the vehicle from the bridge gap to the working area. By adding counterweights through the counterweight compartment 102, the friction force can be increased on the inclined bridge surface, improving the traction power output. The interconnection device realizes the connection between the rear of the electric flatbed truck 1 and the sealed cabin device 2 and the cascading of the sealed cabin device 2, realizing the mobile traction of the sealed cabin device 2, and effectively realizing the operation ability of the electric flatbed truck 1.

[0057] To enable the integral inflatable cabin wall to be better fixed on the square base 201, 4 hook holes 210 are provided at the corners on the left and right outer sides of the square base 201, and 4 fixing rings 211 are provided on the left and right outer sides of the cabin top of the integral inflatable cabin wall. The positions of the 4 fixing rings 211 correspond to the positions of the 4 hook holes 210 one by one, and the hook holes 210 and the fixing rings 211 are connected by a cable. The 4 hook holes 210 are used when lifting and placing the base, and can also ensure that the integral inflatable cabin wall can be better fixed on the square base 201.

[0058] To facilitate the splicing of the lower section of the sealed cabin, self-adhesive straps are installed at both the front end and the rear end of the integral inflatable sealed cabin 202. In this example, the integral inflatable sealed cabin 202 is made of 21OD Oxford cloth material. The material is firm and reliable. The setting of the self-adhesive straps facilitates the splicing of the integral inflatable sealed cabin 202 of the lower section of the sealed cabin, and a PVC soft plastic curtain can also be installed to form a sealed space.

[0059] To achieve the monitoring and control of the working environment, the environmental control device 3 includes a temperature monitoring module, a humidity monitoring module, an air quality monitoring module, an audible and visual alarm, an illuminance monitoring module, a PLC, and a human-machine interface panel. The temperature monitoring module includes a temperature sensor, an indoor air conditioner 301, and an outdoor air conditioner 302. The temperature sensor is arranged inside the integrated inflatable sealed cabin 202, the indoor air conditioner 301 is arranged on the environmental control equipment placement platform 205, and the outdoor air conditioner 302 is arranged on the equipment outdoor placement platform 206. The humidity monitoring module includes a humidity sensor and an internal circulation dehumidifier 303. The humidity sensor is arranged inside the integrated inflatable sealed cabin 202, and the internal circulation dehumidifier 303 is arranged on the environmental control equipment placement platform 205. The air quality monitoring module includes an air filter, an air quality sensor, and an air filtration fan 305. The air filter is arranged on the equipment outdoor placement platform 206. The air quality sensor includes sensors for detecting methane CH4, carbon monoxide CO, hydrogen sulfide H2S, fine particulate matter PM2.5, and oxygen O2, and is arranged inside the sealed cabin. The air filtration fan 305 is arranged on the environmental control equipment placement platform 205, and the air filtration fan 305 is connected to the air filter through a flange port. The illuminance monitoring module includes an illuminance sensor, a dimming controller, and multiple adjustable lighting lamps. The illuminance meter is arranged inside the sealed cabin, and the dimming controller is arranged inside the control cabinet 208. The temperature sensor, humidity sensor, air quality sensor, illuminance sensor, audible and visual alarm, and human-machine interface panel are all connected to the PLC. The PLC is connected to the air conditioner, internal circulation dehumidifier 303, and air filtration fan 305 through relays to achieve start-stop control. The PLC is connected to the remote management device through a wireless communication module. The PLC, relays, and wireless communication module are all arranged inside the control cabinet 208. The human-machine interface panel and the audible and visual alarm are arranged on the door of the control cabinet 208. A circuit breaker is arranged at the power access end inside the control cabinet 208. The monitoring and control of the working environment are effectively achieved.

[0060] To better achieve the monitoring of air quality, the temperature sensor, humidity sensor, air quality sensor, and illuminance sensor are arranged in a multi-group and multi-point manner using a sensor group 309 on the side of the environmental control equipment placement platform 205 inside the integrated inflatable sealed cabin 202, at the middle working area, and on the side of the cable joint installation equipment placement platform 204, and are all arranged on movable brackets. Through the multi-group and multi-point method distributed at different positions, the monitoring of air quality can be better achieved.

[0061] In order to effectively achieve air filtration, the air filter adopts a multi-layer structure, including a solid particle filtration layer 306, a water-vapor separation layer 307, and a salt mist filtration layer 308. The solid particle filtration layer 306 adopts multiple layers of non-woven fabric filters, and the filters are arranged in a plug-in form on the outermost layer of the solid particle filter. The water-vapor separation layer 307 adopts a multi-layer louver structure and is cooled by an external circulation dehumidification condenser 304. The external circulation dehumidification condenser 304 is arranged on the external equipment installation platform. The external circulation dehumidification condenser 304 is automatically started by the centralized control module controlling the relay action. The temperature of the water-vapor separation layer 307 of the louver structure is reduced through air-cooled heat exchange, so that moisture condenses into water droplets on the louvers and remains outside the sealed cabin. A one-way diversion pipeline for discharging the condensed water to the outside is provided at the lower end of the louver structure. The salt mist filtration layer 308 adopts a three-layer fiber filter of coarse, medium, and high efficiency. The fiber filter uses fiber filter paper with strong hydrophobicity. The solid particle filtration layer 306, the water-vapor separation layer 307, and the salt mist filtration layer 308 all adopt a plug-in fixing method. When replacing the filter element, the fixing sandwich is loosened by a wing nut, and after replacing the filtration layer, the wing nut is tightened to seal the filtration channel. It can effectively achieve air filtration, and the plug-in fixing method is convenient for maintenance and replacement.

[0062] In order to achieve position fixation during operation, the mobile wheel set 203 adopts universal wheels with brakes, which is convenient for the movement of the sealed cabin device 2 and position fixation during operation.

[0063] In order to facilitate connection, the interconnection device adopts a single-axis connection device, including a plug pin 213 and a socket plate base 212. The socket plate base 212 at the front end of the square base 201 is located on the upper surface of the base cross bar of the square base 201. When two sealed cabin devices 2 are cascaded, the socket plate base 212 of the subsequent sealed cabin device 2 is located on the upper surface of the square base 201 of the previous stage and is fixed by the plug pin 213. The structure is simple, and during the cascading process of the sealed cabin device 2, the socket plate base 212 will not contact the front-stage sealed cabin.

[0064] In order to reduce weight while ensuring structural strength, the rectangular card slot bar 209 adopts a grid structure and a segmented installation structure. The rectangular card slot bar 209 is fixed to the square base 201 by countersunk head screws. Adopting a grid structure can reduce weight while ensuring structural strength, and being fixed by countersunk head screws makes connection and disassembly convenient.

[0065] In this example, the human-machine panel sets the start / stop parameters of each device. The temperature sensor, humidity sensor, air quality sensor, illuminance sensor, and human-machine panel all use the RS485 communication bus and the Modbus-RTU communication protocol to communicate with the PLC. The PLC monitors the sensor data and outputs alarm signals. The human-machine panel displays the real-time data of each sensor and the operating status of the device, and controls the start / stop of the device. The PLC is connected to the wireless communication module through the network port, and sends the real-time sensor data and the operating status of the device to the remote management device through the network. In this example, the wireless communication module uses a 4G wireless router module, and the remote management device uses a computer to receive the data uploaded by the PLC and display it in real time for the management department to monitor the construction site conditions.

[0066] In this example, PVC soft plastic curtain mounting brackets are reserved at the front and rear ends of the square base 201 to facilitate the installation of the curtain to isolate the front and rear ends of the square base 201 from the outside air.

[0067] In this example, for the air conditioner and dehumidifier in the equipment, the PLC controls the relay according to the real-time detection data to power on and off the equipment, and controls the working mode through the RS485 bus. The fan and condenser are automatically started and maintained in the operating state by the PLC controlling the relay.

[0068] In this example, one side, the upper surface, and the lower surface of the equipment outdoor unit placement platform 206 close to the center of the square base 201 are sealed, and the other three sides are unobstructed. The frame and bottom of the equipment outdoor unit placement platform 206 are supported by angle irons.

[0069] In this example, during operation, the internal circulation dehumidifier 303 controls the humidity to below 70%.

[0070] The equipment installation operation process is as follows:

[0071] S1 Lift and install each part of the equipment near the operation area;

[0072] S2 Place the end of the square base 201 with the single-axis connection device facing the subsequent operation area, and fix the rectangular card slot bar 209 to the square base 201 with countersunk screws;

[0073] S3 Inflate the integrated inflatable seal chamber 202 for 5 minutes until it can expand into a shape and has a certain supporting capacity;

[0074] S4 Embed the integrated inflatable seal chamber 202 into the rectangular card slot;

[0075] S5 Inflate the integrated inflatable seal chamber 202 fully;

[0076] S6 Connect the fixing ring 211 on the integrated inflatable seal cabin 202 and the hook hole 210 on the square base 201 with a cable to complete the fixed installation of the integrated inflatable seal cabin 202 on the square base 201;

[0077] S7 Install the mobile wheel set 203 at the bottom of the square base 201 and lock the brake structure;

[0078] S8 Install the cable joint installation equipment placement platform 204, the environmental control equipment placement platform 205, and the equipment external unit placement platform 206 on the square base 201;

[0079] S9 Install the power distribution cabinet 207 and the control cabinet 208 on the square base 201;

[0080] S10 Connect the branched sockets to the power distribution cabinet 207 through aviation control plugs;

[0081] S11 Install the air conditioner indoor unit 301, the internal circulation dehumidifier 303, and the air filtration fan 305 on the environmental control equipment placement platform 205;

[0082] S12 Install the air conditioner outdoor unit 302, the external circulation dehumidification condenser 304, the solid particle air filtration layer, the water vapor separation layer 307, and the salt mist filtration layer 308 on the equipment external unit placement platform 206;

[0083] S13 Fix the pipelines of the air conditioner indoor unit 301 and the air conditioner outdoor unit 302 on the environmental control equipment placement platform 205 through flanges, and connect the RS485 control line of the air conditioner indoor unit 301 to the control cabinet 208 through a 2-core aviation control plug;

[0084] S14 Fix the outlet pipeline of the external circulation dehumidification condenser 304 on the environmental control equipment placement platform 205 through a flange, connect the air outlet of the external circulation dehumidification condenser 304 to the water vapor separation layer 307, and connect the start-stop control signal line of the external circulation dehumidification condenser 304 to the control cabinet 208 through a 2-core aviation control plug;

[0085] S15 Fix the pipeline of the air filtration fan 305 on the environmental control equipment placement platform 205 through a flange, and connect the start-stop control signal line of the air filtration fan 305 to the control cabinet 208 through a 2-core aviation control plug;

[0086] S16 Connect each sensor to the control cabinet 208 through a 16-core aviation control plug;

[0087] S17 After completing the construction of the above seal cabin unit, according to the actual operation space requirements, complete the construction of the remaining seal cabin units in the same steps;

[0088] S18 Connect the single-axis connection device of the electric flatbed truck 1 to the single-axis connection device of the square base 201. Open the counterweight compartment 102 of the electric flatbed truck 1, put sandbags into it, and control the electric flatbed truck 1 to tow the sealed cabin device 2 to the operation area through the remote control;

[0089] S19 Control the electric flatbed truck 1 to pass through the bottom of the in-place sealed cabin device 2, and tow the remaining sealed cabin devices 2 to the operation area one by one;

[0090] S20 Lay a sealing film at the bottom of the square base 201, and a fireproof pad should be laid on the sealing film. Place the cable on the fireproof pad;

[0091] S21 Install PVC soft plastic curtains on the outermost two sealed cabin devices 2 through self-adhesive straps, and splice the sealed cabins with self-adhesive straps;

[0092] S22 Install the required equipment for cable joint installation on the equipment placement platform 204 for cable joint installation;

[0093] S23 Power on the power distribution cabinet 207 of the sealed cabin device 2, power on the control cabinet 208, power on the equipment on the equipment placement platform 204 for cable joint installation, power on the equipment on the equipment placement platform 205 for environmental control equipment, power on the equipment on the equipment placement platform 206 for external equipment, and power on each sensor module;

[0094] S24 Start the PLC, automatically start the external circulation dehumidification condenser 304 and the air filtration fan 305, set the expected values of temperature, humidity, and illuminance inside the sealed cabin. After the PLC collects the sensor data, it automatically controls the air conditioner, the internal circulation dehumidifier 303, and the dimming controller to work;

[0095] S25 The PLC regularly packs the sensor data and the equipment operation status data and sends them to the remote management device at the specified IP and port through the 4G wireless router module;

[0096] S26 After receiving the data, the remote management device parses the data according to the protocol, visualizes the data, and displays it on the control screen.

[0097] The traction and movement of the sealed cabin device 2 can be realized by the electric flatbed truck that can travel above the cable to be processed, which is convenient to be arranged in the operation area. By realizing the adjustable monitoring of temperature, humidity, air quality, and illuminance inside the sealed cabin device 2, an ideal operation environment for cable joint operation can be effectively achieved. The equipment has a high integration level, can be made to occupy a small space, is convenient to pass through the narrow gaps of the cross-sea bridge bridge, is convenient for movement and multi-point interval layout, and realizes the simultaneous cable joint operation of multi-point interval continuous welding, which can effectively improve the cable joint operation speed and shorten the operation time.

[0098] In this example, the PLC compares the operating environment parameters, air quality parameters with the alarm thresholds. If the current environment parameters are not suitable for operation, it triggers the audible and visual device to alarm.

[0099] In this example, the PLC adopts the PID control algorithm for temperature control; the PLC adopts the bang-bang control strategy for humidity control; the PLC adopts the fuzzy control algorithm for illuminance control.

[0100] In this example, after the air filtration fan 305 is powered on, the PLC controls the relay to act and start automatically. The air filtration fan 305 draws negative pressure in the filter channel to introduce the outside air into the sealed cabin. The fresh air volume is not less than 50 cubic meters per hour.

[0101] Above Figures 1-4 The above-mentioned installation environment control device and installation method for the cable joint along the sea-crossing bridge are specific embodiments of the present invention, which have already reflected the substantial features and progress of the present invention. According to the actual use needs, under the inspiration of the present invention, equivalent modifications can be made to its shape, structure, etc., and all are within the protection scope of this solution.

Claims

1. An installation environment control device for a cable joint along a cross - sea bridge, characterized in that: It includes an electric tractor device that travels above the cable to be processed, a movable sealed cabin device (2) for realizing a sealed environment, and an environmental control device (3) for monitoring temperature, humidity, air quality, and illuminance. The electric tractor device is detachably connected to the sealed cabin device (2). The environmental control device (3) is arranged inside the sealed cabin device (2), and the environmental control device (3) is wirelessly connected to a remote management device for visual supervision. The sealed cabin device (2) includes a square base (201), an integral inflatable sealed cabin (202), a mobile wheel set (203), a cable joint installation equipment placement platform (204), an environmental control equipment placement platform (205), an equipment external unit placement platform (206), a power distribution cabinet (207), and a control cabinet (208). The mobile wheel set (203) is arranged at the bottoms of the left and right sides of the square base (201). The cable joint installation equipment placement platform (204) and the environmental control equipment placement platform (205) are respectively arranged on the left and right sides of the square base (201). The equipment external unit placement platform (206) is arranged below the environmental control equipment placement platform (205). The power distribution cabinet (207) is arranged at the front end of the cable joint installation equipment placement platform (204). The control cabinet (208) is arranged at the front end of the environmental control equipment placement platform (205). Rectangular slot bars (209) are arranged at the upper ends of the left and right sides of the square base (201). The integral inflatable sealed cabin (202) is connected to the square base (201) through the rectangular slot bars (209). The cable joint installation equipment placement platform (204), the environmental control equipment placement platform (205), the power distribution cabinet (207), and the control cabinet (208) are all located inside the integral inflatable sealed cabin (202).

2. The installation environment control device for a cable joint along a cross - sea bridge according to claim 1, characterized in that: The input voltage of the power distribution cabinet (207) is 380V alternating current. The input line is first paralleled to the rear end of the cable joint installation equipment placement platform (204) before entering the molded case circuit breaker, serving as the input power supply of the sealed cabin device (2). After passing through the molded case circuit breaker, the input line is converted into multiple 380V and 220V alternating current lines for use by operating equipment and control equipment. Different sockets are used for 380V and 220V alternating current to avoid misoperation.

3. The installation environment control device for a cable joint along a cross - sea bridge according to claim 1, characterized in that: The electric tractor device uses an electric flatbed truck (1). The ground clearance at the middle bottom of the electric flatbed truck (1) is ≥20 cm, which is greater than the diameter of the cable below the electric flatbed truck (1). The suspended height of the square base (201) is ≥50 cm for cable routing. The height of the electric flatbed truck (1) is less than the suspended height of the square base (201), and it can pass under the square base (201).

4. The installation environment control device for a cable joint along a cross - sea bridge according to claim 3, characterized in that: Anti-collision strips are arranged around the frame of the electric flatbed truck (1). Lifting rings (101) are arranged at the four corners of the upper surface of the electric flatbed truck (1). A detachable counterweight cabin (102) is arranged in the middle of the upper surface of the electric flatbed truck (1). Interconnecting devices for detachable connection are arranged at the rear of the electric flatbed truck (1) and the front of the sealed cabin device (2).

5. The installation environment control device for a cable joint along a cross - sea bridge according to claim 4, characterized in that: Four hook holes (210) are provided at the corners on the left and right outer sides of the square base (201). Four fixing rings (211) are provided on the left and right outer sides of the top of the integrated inflatable sealed cabin (202). The positions of the four fixing rings (211) correspond to the positions of the four hook holes (210) one by one. The hook holes (210) and the fixing rings (211) are connected by a cable.

6. The installation environment control device for a cable joint along a cross - sea bridge according to claim 5, characterized in that: The integrated inflatable sealed cabin (202) is made of 21OD Oxford cloth material, and self-adhesive straps are installed at both the front end and the rear end of the integrated inflatable sealed cabin (202).

7. The installation environment control device for a cable joint along a cross - sea bridge according to claim 1, characterized in that: The environmental control device (3) includes a temperature monitoring module, a humidity monitoring module, an air quality monitoring module, a sound and light alarm, an illuminance monitoring module, a PLC, and a human-machine interaction panel. The temperature monitoring module includes a temperature sensor, an indoor air conditioner (301), and an outdoor air conditioner (302). The temperature sensor is arranged inside the integrated inflatable sealed cabin (202). The indoor air conditioner (301) is arranged on the environmental control equipment placement platform (205). The outdoor air conditioner (302) is arranged on the equipment outdoor unit placement platform (206). The humidity monitoring module includes a humidity sensor and an internal circulation dehumidifier (303). The humidity sensor is arranged inside the integrated inflatable sealed cabin (202). The internal circulation dehumidifier (303) is arranged on the environmental control equipment placement platform (205). The air quality monitoring module includes an air filter, an air quality sensor, and an air filtration fan (305). The air filter is arranged on the equipment outdoor unit placement platform (206). The air quality sensor includes methane CH4, carbon monoxide CO, hydrogen sulfide H2S, fine particulate matter PM2.5, and oxygen O2 detection sensors, which are arranged inside the sealed cabin. The air filtration fan (305) is arranged on the environmental control equipment placement platform (205). The air filtration fan (305) is connected to the air filter through a flange port. The illuminance monitoring module includes an illuminance sensor, a dimming controller, and multiple adjustable lighting lamps. The illuminance sensor is arranged inside the sealed cabin. The dimming controller is arranged inside the control cabinet (208). The temperature sensor, the humidity sensor, the air quality sensor, the illuminance sensor, the sound and light alarm, and the human-machine interaction panel are all connected to the PLC. The PLC is connected to the air conditioner, the internal circulation dehumidifier (303), and the air filtration fan (305) through a relay to realize start-stop control. The PLC is connected to a remote management device through a wireless communication module. The PLC, the relay, and the wireless communication module are all arranged inside the control cabinet (208). The human-machine interaction panel and the sound and light alarm are arranged on the door of the control cabinet (208). A circuit breaker is provided at the power access end inside the control cabinet (208).

8. The installation environment control device for a cable joint along a cross - sea bridge according to claim 7, characterized in that: The temperature sensor, humidity sensor, air quality sensor, and illuminance sensor are arranged in multiple groups and at multiple points in the form of a sensor group (309) on the sides of the environmental control equipment placement platform (205), in the middle operation area, and on the sides of the cable joint installation equipment placement platform (204) inside the integrated inflatable sealed cabin (202), and are all installed on movable brackets.

9. The installation environment control device for a cable joint along a cross - sea bridge according to claim 7, characterized in that: The air filter adopts a multi-layer structure, including a solid particle filter layer (306), a water-vapor separation layer (307), and a salt spray filter layer (308). The solid particle filter layer (306) adopts multiple layers of non-woven fabric filters. The filter is arranged in a plug-in form on the outermost layer of the solid particle filter. The water-vapor separation layer (307) adopts a multi-layer louver structure and is cooled by an external circulation dehumidification condenser (304). The external circulation dehumidification condenser (304) is installed on the external equipment installation platform. A one-way diversion pipe for discharging condensed water to the outside is provided at the lower end of the louver structure. The salt spray filter layer (308) adopts a three-layer fiber filter of coarse, medium, and high efficiency. The fiber filter adopts fiber filter paper with strong hydrophobicity. The solid particle filter layer (306), the water-vapor separation layer (307), and the salt spray filter layer (308) all adopt a plug-in fixing method. When replacing the filter element, loosen the fixing sandwich by turning the wing nut, and then tighten the wing nut to seal the filter channel after replacing the filter layer.

10. An installation method for the installation environment control device for a cable joint along a cross - sea bridge according to any one of claims 1 - 9, characterized in that It includes the following steps: S1) Hoist each part of the equipment to the vicinity of the operation area; S2) Place the end of the square base (201) with the single-axis connection device facing the subsequent operation area, and fix the rectangular card slot bar (209) to the square base (201) with countersunk head screws; S3) Inflate the integrated inflatable sealed cabin (202) for 5 minutes until it can expand into a shape and has a certain supporting capacity; S4) Insert the integrated inflatable sealed cabin (202) into the rectangular card slot; S5) Inflate the integrated inflatable sealed cabin (202) fully; S6) Connect the fixing ring (211) on the integrated inflatable sealed cabin (202) and the hook hole (210) on the square base (201) with a cable to complete the fixed installation of the integrated inflatable sealed cabin (202) on the square base (201); S7) Install the mobile wheel set (203) at the bottom of the square base (201) and lock the braking structure; S8) Install the cable joint installation equipment placement platform (204), the environmental control equipment placement platform (205), and the equipment external unit placement platform (206) on the square base (201); S9) Install the power distribution cabinet (207) and the control cabinet (208) on the square base (201); S10) Connect the branched sockets to the power distribution cabinet (207) through aviation control plugs; S11) Install the air conditioner indoor unit (301), the internal circulation dehumidifier (303), and the air filter fan (305) on the environmental control equipment placement platform (205); S12) Install the outdoor air conditioner (302), the external circulation dehumidifying condenser (304), the solid particle air filter layer, the water-vapor separation layer (307), and the salt spray filter layer (308) onto the equipment outdoor unit placement platform (206); S13) Fix the pipelines of the indoor air conditioner (301) and the outdoor air conditioner (302) to the environmental control equipment placement platform (205) through flanges, and connect the RS485 control line of the indoor air conditioner (301) to the control cabinet (208) through a 2-core aviation control plug; S14) Fix the water outlet pipeline of the external circulation dehumidifying condenser (304) to the environmental control equipment placement platform (205) through a flange, connect the air outlet of the external circulation dehumidifying condenser (304) to the water-vapor separation layer (307), and connect the start-stop control signal line of the external circulation dehumidifying condenser (304) to the control cabinet (208) through a 2-core aviation control plug; S15) Fix the pipeline of the air filtration fan (305) to the environmental control equipment placement platform (205) through a flange, and connect the start-stop control signal line of the air filtration fan (305) to the control cabinet (208) through a 2-core aviation control plug; S16) Connect each sensor to the control cabinet (208) through a 16-core aviation control plug; S17) After completing the construction of the above-mentioned sealed cabin unit, according to the actual operation space requirements, complete the construction of the remaining sealed cabin units in the same steps; S18) Connect the single-axis connection device of the electric flatbed truck (1) to the single-axis connection device of the square base (201), open the counterweight cabin (102) of the electric flatbed truck (1), put sandbags in it, and use the remote control to control the electric flatbed truck (1) to tow the sealed cabin device (2) to the operation area; S19) Control the electric flatbed truck (1) to pass through the bottom of the in-place sealed cabin device (2), and tow the remaining sealed cabin devices (2) to the operation area one by one; S20) Lay a sealing film at the bottom of the square base (201), and lay a fireproof pad on the sealing film, and place the cable on the fireproof pad; S21) Install PVC soft plastic door curtains on the outermost two sealed cabin devices (2) through self-adhesive straps, and splice the sealed cabins with self-adhesive straps; S22) Install the required equipment for cable joint installation on the cable joint installation equipment placement platform (204); S23) Power on the power distribution cabinet (207) of the sealed cabin device (2), power on the control cabinet (208), power on the equipment on the cable joint installation equipment placement platform (204), power on the equipment on the environmental control equipment placement platform (205), power on the equipment on the equipment outdoor unit placement platform (206), and power on each sensor module; S24) Start the PLC, automatically start the external circulation dehumidifying condenser (304) and the air filtration fan (305), set the expected values of temperature, humidity, and illuminance inside the sealed cabin, and after the PLC collects the sensor data, automatically control the air conditioner, the internal circulation dehumidifier (303), and the dimming controller to work; S25) The PLC regularly packages the sensor data and equipment operation status data and sends them to the remote management device at the specified IP and port through the 4G wireless router module; S26) After receiving the data, the remote management device analyzes the data according to the protocol, performs visual processing on the data, and displays it on the control screen.

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