Pre-embedded construction scheme of solar street lamp with pole foundation
Dig a hole at the position of the lamp post to make the lamp post foundation: the company provides the embedded map of the street lamp foundation with corresponding specifications. After excavation, it is necessary to explore whether there are obstacles and underground pipelines underground. If there is, it should be translated. Get out of the way and avoid barbaric construction.
8 cm thick cushion is laid in the foundation pit.
The foundation pouring concrete is produced by centralized processing, stirred evenly by a mixer, and transported to the construction site by vehicles.
When pouring concrete independent foundation on cushion, it should be vibrated while pouring; Before the end of pouring, the embedded parts of anchor bolts should be buried and the anchor bolts should be grouted again.
Pay attention to the bolt protection measures on the foundation of the lamp post to prevent the bolt from being damaged.
When laying the embedded conduit (protective tube), a special person shall be appointed to align the foundation outlet hole with the battery outlet hole in time. The upper mouth should be located in the middle of the embedded parts, 5 cm higher than the concrete embedded parts (to avoid water). Try to avoid bending of the embedded threading pipe, and its inner diameter should not be less than 1.5 times of the outer diameter of the steel hose. When the protective tube is bent, it should not be less than 2 times, and try to avoid dead bending. Keep the lower port slightly inclined downward. The nozzle must be blocked with something to avoid mud and other sundries pouring into the pipe to block the threading pipe during construction.
After pouring, level the embedded parts and smooth the surface of concrete foundation.
Before installing the light pole foundation, find out the verticality from two directions, and monitor the verticality during installation. The verticality deviation is not more than 5 mm to ensure the verticality of the lamp post.
The prepared foundation must be maintained for 2-5 days (according to the environmental temperature during construction, it is decided by the construction personnel). In the process of maintenance, the upper surface of the foundation shall be tested irregularly to ensure its levelness. If it does not meet the requirements, it should be repaired in time.
The construction scheme of solar street lamp is to install storage battery and buried storage battery box.
There should be no water in the buried area of the battery.
Before burying the battery box, a working pit should be dug, the size of which is generally more than 1m * 1m (the length and width vary with the specifications of the battery box and the depth varies with the region, so it must be below the local frozen soil layer).
After excavation, use the ground line to explore whether there are obstacles and underground pipelines. If yes, get out of the way smoothly to avoid barbaric construction.
If the battery voltage is higher than 12.6V (12V system), it is qualified. Then, put the battery horizontally into the battery box and fix it firmly to ensure that the battery terminals are smooth. When necessary, polish the terminal with a wire brush or sandpaper to connect the battery output line firmly (the positive and negative electrodes are separated). The two wires are sheathed with steel hose, and then placed on the threading port (overlapping length) of the battery box, so as to be waterproof, anticorrosive, short-circuited and heat-insulated. Finally, cover the battery box and make it waterproof.
After digging the working pit, start to bury the battery box and find out the levelness of the battery box. The inner diameter of the embedded threading tube (protection tube) should not be less than 1.5 times of the outer diameter of the steel hose, and the protection tube should not be less than 2 times when bending, so as to avoid dead bending.
The protection tube shall be free from perforation, crack and uneven defects, and the inner wall shall be smooth without burrs and sundries.
The steel wire hose goes out of the ground from bottom to top. After installation, it is backfilled with earthwork to restore the original road surface and clean up the construction site.
Installation of solar cells in the construction scheme of solar street lamps
First, level the solar panel holder (which may cause the panel holder to bend during transportation) so that the solar panel can be placed on it smoothly.
The solar panel is firmly fixed on the bracket with bolts, nuts and washers. When the solar cell is placed vertically, the junction box should be located above, and when the solar cell is placed horizontally, the junction box should be close to the lamp post assembly.
Construction scheme of solar street lamp connecting solar cell cable
Connections with system voltage of 12 volts or 24 volts.
Connect the red wire to the positive pole of the solar panel, and the black wire to the negative pole of the solar panel, and then tighten the waterproof sealing nut under the junction box to fasten the wire in the junction box.
After the two wires are connected, be sure to measure whether there is voltage at the output end. The end of the red line is a positive electrode; The end of the black line is the negative pole. On sunny days, the open-circuit voltage of the module should be greater than17-18v (12v system) or 34-36V (24V system). When the light is weak, the voltage is lower.
Series and parallel connection of solar panels: If solar panels need to be connected in series or in parallel, there must be diodes in the junction box of solar panels. If the system voltage of the street lamp is 24 volts and the voltage of the solar cell module is 17- 18 volts, the solar cell module should be connected in series by connecting the anode (or cathode) of the first module with the cathode (or anode) of the second module. If the voltage of the solar cell module is 34-36 volts, the solar cell module should be connected in parallel by connecting the anode and cathode of the first module.
Connect the solar panel cable
After all wiring is completed, cover the junction box and fix it with screws.
After the inspection is correct, the next step of the solar cell can be carried out.
Construction scheme of solar street lamp Installation of lamp poles, lamps and cables
Before installing the lamp post, visually inspect the weld of the lamp post to be symmetrical without virtual welding, and there should be no bulge, pinhole, crack and missed spraying in plastic spraying, and the straightness error of the rod body is less than 3%.
When installing the lamp post, try to prevent strangling or cutting the surface coating. It is forbidden to strangle with wire rope or throw it down from the car.
The lamp post shall be installed vertically, with the vertical deviation not more than half of the diameter of the lamp tip, and the lamp post shall be arranged on a straight line parallel to the longitudinal axis of the road, with the lateral displacement not more than half of the diameter of the root of the lamp post.
Before installing the light source, check whether it is normal, so as to avoid unnecessary trouble caused by the installation that may be damaged in transit.
Lamps and lanterns should be installed correctly and perpendicular to the longitudinal axis of the road, with an error of no more than 3 degrees. After installation, visually check that there is no skew.
When installing the light pole, the bolts at all parts should be reinforced with flat pads and spring pads, and the exposed nuts of the bolts should not be less than two pitches after fastening.
Bolts between lamp holder and lamp body must be fastened, and reinforcement measures should be taken for parts that may rotate under wind pressure.
Thread with pre-threaded wire. When threading, it is forbidden to pull hard, so as not to cause sheath line to be scratched or even broken. Sheath line connecting solar cell module and light source must have sufficient margin; The power cord connected to the controller needs to be bent downward to prevent water from flowing into the terminal along the wire.
The construction scheme of solar street lamps adjusts the direction and angle of solar panels.
Adjust the angle of the solar panel according to the design requirements.
Use the compass to adjust the front of the solar panel, facing south (equatorial direction).
Tighten the fixing bolts after adjustment.
Connection of solar street lamp construction scheme controller
The output line of the solar cell, the output line of the lamp holder and the connecting line of the storage battery. These three groups of wires should be connected to the controller in the following order: 1, battery 2, load (light source) 3, and solar battery (according to the requirements for installing the controller). If this wiring sequence is violated, the whole system will not work normally.
Connect the battery first. First measure the voltage of the battery, whether it is within the specified range, and then make the positive and negative terminals of the battery (there can be no burrs on the metal terminals. The length of the metal head depends on the depth of the controller terminal hole, not too long to avoid overlapping and short circuit between wires). After the wire ends are connected, insert the positive electrode into the "+"terminal hole of the battery marked on the controller and tighten the screws. Connect the negative electrode to the corresponding "-"terminal hole and check whether there is voltage. Be careful when wiring, and don't let the positive and negative poles of the battery short-circuit through the shell or tools in your hand.
After the battery is connected to the controller, the controller starts to work and the corresponding battery indicator lights up. After ten minutes, there should be voltage at the output of the load. Turn on the load (light source) and the light source will light up immediately.
Reconnect the load (light source) and unplug the wire protector of the light source. The red line is positive and the black line is negative. Connect them to the load terminals of the controller (in the light source "+"and "-"terminal holes marked on the controller). Note: The positive and negative poles should not be connected incorrectly, otherwise the load may be damaged.
After the light is on, the solar panels can be connected in a minute or two.
Finally, connect the solar panels. Pull out the protective sleeve of the solar panel, with the red line as the positive electrode and the black line as the negative electrode. First, measure the line-to-line voltage. When the light is weak, the voltage is lower. On sunny days, the open-circuit voltage of components should be greater than 18V (12V system) or 36V (24V system). The anode and cathode of the solar cell are not afraid of short circuit, and the two wires of the solar cell are connected to the corresponding terminals of the controller. Pay attention to the positive and negative poles.
After the controller is connected to the solar cell, if there is enough voltage (above 10V) on the solar cell panel, the controller will consider it as a dawn state. In ten minutes, the street lamp will be turned off. When you turn on the light again, you have to wait until dark.
At this point, all the wires of the controller are connected. Carefully check whether the terminals of the controller are connected to the three groups of wires correctly, whether there are burrs, whether there are bare metal wires, and whether the screws for fixing the wires are tightened.
Trial operation of solar street lamp construction scheme
Before the trial operation, a detailed inspection should be made to carefully check whether the controller, solar battery cable, load cable, battery cable and safety device are connected correctly.
After operation, send someone to check the opening time, closing time and luminous efficiency of each solar street lamp, and take corrective measures immediately when problems are found to ensure normal operation.
Do a good job of running records and establish file management.