KR101962345B1 - Bridge expansion joint anti-icing system with the carbon fiber heating element - Google Patents

Abstract

Disclosed is an anti-freezing bridge expansion joint system using a carbon fiber heating element. Bridge joints connecting bridge tops; A heating element that dissipates heat by conducting heat to the bridge joint; A driver for driving the heating element; A supply unit for supplying electricity to the driver; And a control unit for enabling electric power supply when the switch is turned on or a temperature drop of the camera is detected and a temperature drop of the temperature sensor is detected, the heating element is installed at the leg joint, the driver is installed at the end of the heating element, The switch of the control unit is installed at the bridge bridge, the temperature sensor measures the temperature of the bridge joint, and the camera recognizes the snowfall. Therefore, heat can be conducted to bridge joints to perform snow removal work.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a carbon fiber heating element,

More particularly, the present invention relates to a system for preventing the freezing bridge expansion and contraction using a carbon fiber heating element, and more particularly, And a carbon fiber heating element for enabling electric supply of a supply part for supplying electric power to a driver for driving a heating element for melting snow.

The bridge is installed on the road to help the car move. If snow accumulates on the bridge in the winter, there will be restrictions on driving. This can cause traffic congestion. In order to solve the traffic congestion, the bridge is snowing, but there is a problem that the iron structure supporting the bridge pier can corrode due to snow removal. There is a need for an apparatus for performing snow removal while preventing corrosion of a steel structure supporting the bridge.

Registration number: 20-0437025, roof top structure Publication number: 20-2011-0001066, Electrode structure of tubular heating device using carbon heating element

In order to solve the above problems, it is an object of the present invention to provide an anti-freezing bridge expansion / contraction joint system using a carbon fiber heating element that conducts heat by conducting heat to a leg.

In order to achieve the above object, the present invention provides a bridge joint for connecting a bridge top plate, A heating element that dissipates heat by conducting heat to the bridge joint; A driver for driving the heating element; A supply unit for supplying electricity to the driver; And a control unit for enabling electric power supply when the switch is turned on or a temperature drop of the camera is detected and a temperature drop of the temperature sensor is detected, the heating element is installed at the leg joint, the driver is installed at the end of the heating element, The switch of the control unit is installed at the bridge bridge, the temperature sensor measures the temperature of the bridge joint, and the camera recognizes the snowfall.

Further, the heating element is a transverse heating element mounted on a concrete portion where a tire operated by a car runs on the bridge; A longitudinal heating element mounted on an upper end of a steel structure of a leg stretching joint device; And a wire protecting tube for protecting the wiring portions of the longitudinal heating element by bundling the wire portions of the longitudinal heating element by connecting the wire portions of the lateral heating elements arranged at regular intervals while connecting them in order.

In addition, the supply unit includes a solar cell that generates solar power, and a solar cell is installed on a leg top plate to convert sunlight into electricity.

Further, the supply section includes a generator that turns a gasoline engine constituted by a rotary engine when an external power source is shut down to drive the motor to generate electric power to supply power to the supply section.

In addition, the longitudinal heating element is formed on the lower portion of the heat shielded PA casing to block heat transmission to the steel structure.

In the case of using the anti-freezing bridge expansion joint system using the carbon fiber heating element according to the present invention as described above, heat can be conducted to the legs for snow removal.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the construction of an anti-freeze bridge expansion joint system to which a carbon fiber heating element of the present invention is applied. FIG.
2 is a block diagram showing the construction of an anti-icing bridge expansion joint system to which a carbon fiber heating element according to an embodiment of the present invention is applied.
FIG. 3 is an exemplary view showing a heating element mounted on a leg according to an embodiment of the present invention. FIG.
4 is an exemplary view showing a wire protecting tube according to an embodiment of the present invention.
5 is a view illustrating a configuration of an anti-freeze bridge expansion joint system to which a carbon fiber heating element according to another embodiment of the present invention is applied.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the construction of an anti-icing bridge expansion joint system to which a carbon fiber heating element of the present invention is applied. Fig.

The heating unit 110 is installed at the leg joint 115 and the driver 120 is installed at the end of the heating body 110. The supplying unit 130 supplies external power to the driver 120, (150) is installed at the bridge bridge, the temperature sensor (160) measures the temperature of the leg joint, and the camera (170) recognizes the snowfall. A configuration for enabling the operation of the freeze-preventing bridge expansion joint system to which such a carbon fiber heating element is applied will be described.

The heating element 110 is installed at the leg joint 115 to conduct heat to the leg joint 115. The heating element 110 may be a carbon fiber heating element.

The driver 120 is installed at the end of the heat emitting body 110 to drive the heat emitting body 110.

The supply unit 130 supplies external power to the driver 120.

The supply unit 130 includes a solar cell that generates sunlight, and a solar cell is installed on a bridge top plate to convert sunlight into electricity. In another embodiment, the solar cell may be installed in a leg rail.

The switch 150 of the control unit 140 is installed at the bridge bridge. The switch 150 turns on / off and issues a command to the control unit. When the switch 150 is turned on, the controller 140 supplies the power of the supply unit 130 to the driver to drive the heating element 110. Heat is conducted to the bridge joint 115 and the snow piled up on the bridge joint 115 melts.

The temperature sensor 160 measures the temperature of the leg joint 115.

The camera 170 recognizes the snowfall. When the snow is recognized, the controller 140 supplies power to the driver 120 to drive the heating element 110.

2 is a block diagram showing the construction of an anti-freeze bridge expansion joint system to which a carbon fiber heating element according to an embodiment of the present invention is applied.

A bridge joint connecting the legs top plate 115; A heating element 110 for dissipating heat by conducting heat to the leg joint 115; A driver 120 for driving the heating element 110; A supply unit 130 for supplying electricity to the driver 120; And a control unit 140 for enabling electricity supply when the switch 150 or the camera 170 senses a snow drop and a temperature drop of the temperature sensor 160. The configuration will be described below.

The bridge joint (115) connects the bridge top plate and is made up of steel structures.

The heating element 110 dissipates heat by conducting heat to the leg joint 115. Aluminum may be bonded to the heating element 110 to increase the thermal conductivity.

The driver 120 supplies electricity to the heating element 110 to drive the heating element 110.

The supply unit 130 receives external power and supplies electricity to the driver 120.

The control unit 140 enables the electricity supply when the switch 150 is turned on or when the camera 170 senses the snowing down and the temperature sensor 160 senses a temperature drop. The controller 140 supplies the power of the supplying unit 130 to the driver 120 to drive the heating element 110. The heating element 110 emits heat.

FIG. 3 is an exemplary view showing a heating element mounted on a leg according to an embodiment of the present invention. FIG.

The heating element mounted on the leg includes a transverse heating element 111 mounted on a concrete portion where a tire operated by a car runs on the bridge; A longitudinal heating element (112) installed at the upper end of the steel structure of the leg stretching joint device; And the wires of the lateral heat generating elements 111 arranged at regular intervals are stacked while being connected to one another and the wire protecting portions 113 of the longitudinal heating elements 112 are bundled and protected.

There is a bridge joint (115) on the bridge.

The bridge joint (115) is a steel structure connecting the top plate. When the upper plate is abutted, a leg joint (115) is made.

The top plate abuts to form the bridge joint.

A heating element 110 is installed on the leg joint 115.

The heating element 110 generates heat by conducting heat to the leg joint 115. Heat can be conducted over a narrow area of the leg joint 115 to melt the eyes.

The driver 120 is located at the end of the heating element 110.

There is a supply part 130 for supplying electricity to the driver 120 and a control part 140 for controlling the supply part 130 is located. The supply unit 130 may use external power or battery power. In case of external power supply, it is necessary to lay wires, but it can operate independently if it is battery.

The leg joint (115) is provided with an expansion joint. The carbon fiber heating element is applied to the expansion joint.

The transverse heating element 111 is applied to a concrete portion where a tire operated by an automobile touches the bridge.

The vertical heating element 112 is installed at the upper end of the steel structure of the expansion joint of the leg.

The electric line protection pipe 113 stacks the electric wires of the transverse heating elements 111 arranged at regular intervals while sequentially connecting them, and protects the electric wires of the longitudinal heating element 112 by bundling them together.

The longitudinal heating element 112 is formed at a lower portion of the heat shielded PA casing 114 so as to block heat transmission to the steel structure.

4 is an exemplary view showing a wire protecting tube according to an embodiment of the present invention.

The electric line protecting tubes 113 are stacked while sequentially connecting the electric wire portions of the lateral heat generating elements 111 arranged at regular intervals.

The wire protecting tube 113 protects one transverse heating element 111 with the wire protecting tube 113 from the transverse heating element 111 disposed at regular intervals and connects one heating element 111 wire to the next transverse heating element 111 And then laminated with the next lateral heating element (111) and protected by a wire protecting tube (113). With this structure, the electric wire protecting tube 113 can safely protect the plurality of transverse heating elements 111 without being twisted.

Hereinafter, a control unit configured on the legs according to the system of the present invention, an anti-icing bridge expansion joint system using a carbon fiber heating element, and a central monitoring server will be described.

Attach the temperature sensor to the expansion joint to measure the temperature.

The controller 140 tests for structural deformation to prevent freezing of the expansion joint and improve reliability and quality due to environmental influences. The control unit 140 performs a test for maintaining structural integrity.

In addition, the control unit 140 measures a change in the amount of expansion or contraction that may occur while applying the heating system to the expansion joint device through a specimen test.

The control unit 140 numerically estimates and compares the measured value with the reference value or the existing design value to see whether a large difference occurs.

The control unit 140 introduces a heating system to provide experimental data as to the degree of structural integrity change caused by the introduction of materials having different characteristics into an existing high performance concrete and expansion joint apparatus made of metal.

The control unit 140 performs a comparative evaluation of the load for the existing case in which the icemaking prevention system is not introduced and the heating system in the case where the icemaking prevention system is installed through the deformation characteristic and the destructive test.

The control unit 140 includes an environmental control module including a heating control system and a weather sensor.

The bridge section where the expansion joint is installed is a very poor environment for the electrical system. In winter, the temperature drops to minus 40 ° C, and in the summer it rises to 80 ° C due to asphalt heat. In addition, there are various environments such as continuous vibration and water infiltration by precipitation.

Roadside facilities require a very conservative design because they must be used over a long period of time in harsh environments.

A case for protecting the control unit 140 is designed. The case is intended to protect the circuitry from the harsh environment.

The case has a sufficient size to dissipate heat generated by the controller and solar heat.

The case is designed to seal the door with rubber so that moisture does not penetrate into the case in a precipitation environment, and the wiring is designed to go under the case.

The case is painted with case, so that the case is not corroded by moisture, salt water or the like.

A rubber damper is added to the case and control circuit board connection area to reduce the transmission of vibration to the control circuit.

It is designed with high durability PCB circuit.

The waterproof connector is used where water penetration is anticipated in the expansion joint system of the bridge for preventing freezing by applying the carbon fiber heating element.

The freezing bridge extension joint system to which carbon fiber heating element is applied selects long-life parts and uses electronic parts with a large operating temperature range.

Freezing bridge with carbon fiber heating element The expansion joint system does not use connectors that are separated by vibration or are not in contact with each other.

Since the weather sensor can not accurately measure the temperature, humidity, etc. when it is in the control box, a separate case is made and installed on the bridge.

The freezing bridge extension joint system using a carbon fiber heating element measures the structural integrity of the expansion joint using a PZT piezoelectric sensor.

Since the expansion joint is installed at the position where the upper part of the road and the bridge are in contact with each other or where the upper structure is separated, most of the impact load is taken to cause breakage frequently.

If the expansion joint device is damaged, it may cause accidents. Therefore, it is necessary to repair the damaged part.

In addition, since it is difficult to grasp the degree of damage, it is required to carry out repair work at regular intervals, so that it is necessary to replace a large number of unexpanded expansion joints, which may cause unnecessary expenditure of social overhead capital do.

All objects have inherent vibration characteristics, and when the shape is changed or damaged, the natural vibration characteristics are changed. PZT Piezoelectric Sensor is a sensor using piezoelectric phenomenon and it is widely used for contact vibration measurement.

The freezing bridge extension joint system using carbon fiber heating element is designed to attach the PZT piezoelectric sensor to the end of the expansion joint and to measure the vibration characteristics in the frequency range when the impact occurs.

The free-span bridged expansion joint system using carbon fiber heating elements performs measurements on vibration characteristics using a piezoelectric sensor and transmits measurement data to a central monitoring server. The central monitoring server manages the measurement data of each expansion joint and takes action when abnormal data is generated. Since the central monitoring device can predict the fatigue of the leg based on the measurement data of the expansion joint device, the maintenance plan can be established by predicting the maintenance time. This can increase leg safety.

In this study, we investigated the vibration characteristics of impact specimens (concrete cracks, separation of concrete and steel structure, concrete part breakage, etc.) And analyzed frequency characteristics of normal specimens and damaged specimens. And the damage detection algorithm using them.

The anti-icing bridge expansion joint system with carbon fiber heating element includes an online monitoring and control system.

It is not easy to locate and check each construction site for maintenance and inspection, because the expansion joint is mainly installed on bridges and is installed nationwide rather than in a specific area.

In the present invention, the expansion joint system for connecting the freezing bridge with the carbon fiber heating element is connected to the Ethernet, so that the expansion joint device installed in the whole country can be monitored in the central system and controlled at the center if necessary.

The information transmitted in the freezing bridge extension joint system using the carbon fiber heating element is the weather data measured by the weather sensor at each position, the state information of the expansion joint, the operation information of the carbon fiber heating element, and the damage state of the carbon fiber heating element. The central monitoring device utilizes the weather data from the freeze bridge bridge extension joint system using carbon fiber heating element for weather forecasting and uses the state information of the expansion joint device for leg safety management and uses it to manage the heating element with the operation information of carbon fiber heating element. , And the carbon fiber heating element is damaged and used for maintenance.

The central monitoring server monitors the expansion joints in each region, manually controls the carbon fiber heating elements in each region, and notifies the repair department in the event of a failure of the expansion joint.

The description of the structure including the generator in the anti-freeze bridge expansion / contraction joint system to which the carbon fiber heating element according to another embodiment of the present invention is applied.

The freezing bridge extension telescopic joint system using carbon fiber heating element further includes a servo motor for on / off control of fuel supply, and the generator controls the servo motor to turn on and off the fuel supply, Save. A configuration for enabling the operation of the freeze-preventing bridge expansion joint system to which such a carbon fiber heating element is applied will be described.

The bridge free extension bridge system with carbon fiber heating element transforms the input voltage to charge the battery.

When the generator is cut off the input voltage, it turns the gasoline engine composed of rotary engine and drives the motor to supply power to the anti-freezing bridge expansion joint system applying carbon fiber heating element. The generator power is used as an external power source for the expansion joint system of the anti-freezing bridges to which the carbon fiber heating element is applied.

The generator is a gasoline engine composed of a rotary engine; A BLDC motor driven by rotation of a gasoline engine; A bridge diode for converting the output of the BLDC motor to an input voltage; And a servo motor for on-off control of the fuel supply.

The gasoline engine consists of a rotary engine. The rotary engine is an engine in which the triangular rotor is eccentrically rotated in the cocoon housing. The gasoline engine is a small rotary engine. The rotary engine has a simple structure and can be miniaturized.

The BLDC motor is driven by the rotation of the gasoline engine.

The bridge diode converts the output of the BLDC motor to the input voltage. The bridge diode converts the AC output of the BLCD motor to a DC output.

The bridge diode output is used as the input voltage and is supplied to the anti-freeze bridge expansion joint system using a carbon fiber heating element.

The bridge-free expansion joint system with carbon fiber heating element charges the battery using the generator power as input voltage.

The generator controls the servomotor to turn the fuel supply on and off to save fuel by using the idle rotation of the gasoline engine and the motor. The servomotor pushes or releases the fuel hose to turn the fuel supply on and off. In the gasoline engine, the gas passing through the exhaust valve is supplied to the fuel tank, the fuel is discharged and supplied to the carburetor. The carburetor supplies the rotary engine with a fuel mixture of air.

The controller of the generator controls the servo motor to turn off the fuel supply when the number of revolutions of the gasoline engine exceeds a predetermined threshold value. When the number of revolutions of the gasoline engine becomes lower than a predetermined threshold value, the control unit of the generator controls the servo motor to turn on the fuel supply. In addition, the control unit of the generator can control the servo motor based on the revolution number by hysteresis. The controller of the generator can adjust the on-off time period using hysteresis. The controller of the generator can increase the hysteresis width to increase the off-period.

The controller of the generator can control the servomotor by adjusting the hysteresis based on the number of rotations when the battery charging is completed and the trickle charging is required, so that the motor output can be lowered by increasing the off period of the fuel supply on-off period.

The method of heating the leg will be described.

An anti-freeze bridge stretch joint system employing a carbon fiber heating element includes a program memory for storing a program, a data memory for storing data, and a processor for executing the program.

Turning now to the data stored in the program memory, the program memory includes a step of enabling electrical supply when it detects a switch-on or camera drop and a temperature drop of the temperature sensor; Supplying electricity to the driver; Driving a heating element; And melting the eyes by conducting heat to the leg joints.

An unfrozen bridge expansion joint system using a carbon fiber heating element executes a program stored in a program memory by a processor, and the operation will be described as follows.

The procedure to be carried out in the freezing bridge extension joint system using the carbon fiber heating element is described in a time series.

Freezing bridge with carbon fiber heating element The expansion joint system enables electricity supply when it senses switch-on or camera down and temperature sensor temperature drop.

The anti-freezing bridge expansion joint system using the carbon fiber heating element detects whether the switch is on and enables the on-back electricity supply. In addition, the anti-freezing bridge expansion joint system using the carbon fiber heating element can recognize the snowing by the camera and enable the electric supply when the temperature sensor senses the temperature drop.

The anti-freeze bridge expansion joint system with carbon fiber heating element supplies electricity to the driver according to the electric supply enable.

The freeze-free bridge expansion joint system using a carbon fiber heating element drives a heating element by a driver.

Freezing bridge with carbon fiber heating element The expansion joint system dissipates heat by conducting heat to bridge joints. The anti-freezing bridge stretch joint system with carbon fiber heating element can be used to check the recording of the snow with the camera and stop the electricity supply. The freeze-free bridge expansion joint system with a carbon fiber heating element can save power by continuing to supply electricity only during snow recording and by stopping electricity supply when snow recording is over. The anti-freeze bridge stretch joint system with carbon fiber heating element detects snow accumulation in bridge joints and can only enable electricity supply when snow accumulation.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

110: heating element 120: driver
130: supply unit 140:
150: switch 160: temperature sensor
170: camera

Claims (3)

Bridge joints connecting bridge tops;
By melting the eyes by conducting heat to the leg joint,
A vertical heating element formed at the lower portion of the heat shielded PA casing to block heat transmission to the steel structure and constructed at the upper end portion of the steel structure of the leg joint and a horizontal portion formed in the concrete portion where the tire A heating element including a heating element and a wire protecting part for stacking and connecting the wire parts of the transverse heating element arranged at regular intervals in order and bundling and protecting the wire parts of the longitudinal heating element;
A driver for driving the heating element;
A supply unit for supplying electricity to the driver;
And a control unit for enabling the supply of electricity to the supply unit when it detects a switch-on or a snow-down of the camera and a temperature drop of the temperature sensor,
The heating element is installed at a leg joint,
The driver is installed at the end of the heating element,
The supply unit supplies external power to the driver,
Wherein the switch of the control unit is installed at a bridge bridge,
The temperature sensor measures the temperature of the leg joint,
The camera recognizes snowing,
The control unit measures the structural integrity of the leg joint using the piezoelectric sensor, transmits the measured structural integrity to the central monitoring server, and displays the weather data measured by the weather sensor, state information of the leg joint, operation information of the heating element, and,
The central monitoring server estimates the fatigue of the leg based on the measurement data, establishes a maintenance plan by predicting the maintenance time, utilizes the meteorological data for weather forecasting, utilizes the state information of the bridge seam to manage the leg safety, A freezing bridge extension joint system using a carbon fiber heating element which is utilized in the heating element management with the operation information of the heating element and used for maintenance in the damaged state of the heating element. delete delete

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