Procedure For Laying Pipes For Hot-dip Galvanized Wires

1. Marking positioning: according to the circuit diagram of the hot dip galvanizing plant, the coordinates and heights of all kinds of lamps, switches, sockets and distribution boxes are determined in combination with the actual situation to determine the direction of the outlet pipe and the branch junction point.

2. Construction steps: before introducing construction steps, talk about wiring rules first. Circuit wiring for interior decoration works. It is generally advisable to adopt the construction method from the end of the line to the end of the line. Specific say, begin wiring from lamp holder of the most end or socket first namely, make along the line each conductor gathers together to distribution box, distribution dish place.

The advantage of this approach lies in the convenience of cleaning the circuit that is connected to each electrical appliance, avoiding confusion and omission when it is connected to the distribution box (disk). At the same time, it can also be convenient to reserve appropriate length of wire when threading or entering the box, and reduce the loss rate of wire. When using slot body wiring, each loop conductor is squeezed inside groove, produce easily the phenomenon of chaotic and omission circuit loop, this is the advantage that says before can reflect come out more.

(1) Production of line pipe hanger: laying line pipe can be fixed by using different hangers or hanger rods according to the terrain. If the line pipe is laid along the wall or floor surface, the finished hanging piece (pipe code) can be directly fixed on the wall or floor surface; If the line pipe is suspended, it should be fixed with a boom. The suspender is generally made of Angle iron. The shape of the suspender can be made into T type, I type and II type according to the form and quantity of the hanging line pipe. T type hanger rod is used for vertical arrangement hoisting of line pipes, I type is used for horizontal arrangement hoisting of a small number of line pipes, and ⅱ type is used for a large number of horizontal arrangement hoisting of pipes.

(2) cutting, bending and wire covering of wire pipe

A. pipe cutting. The length of a line pipe is 4m, and the pipe should be cut "long before short", that is, the line pipe of long size should be cut first, and the line pipe of short size should be cut later, so as to reduce the loss rate of the line pipe. When cutting pipe, the feeding quantity of pipe cutter should not be too deep each time, so that it is not too difficult to rotate the blade after feeding. Rotate the blade along the outer diameter of the tube for 1-2 weeks before feeding the knife, and drop oil on the incision for lubrication before cutting the tube, so as to prolong the life of the blade.

B. bend. Cut the size of the line tube should be bent before the need to bend the wire work, otherwise it will be in the bending of the thread has been set broken. Before bending the pipe, it is necessary to put on the wire of more than two bends, and then bend again. The bending of the line tube, it is best to use the pipe bender, at room temperature can be directly used for bending the pipe specification has three kinds of 20.25.30mm, more than 30mm diameter of the line pipe bending needs special equipment or sand filling in the tube heating to complete.

In the case that there is no pipe bender and the specification line pipe is less than 20mm, the elbow hole in the line pipe clamp brake can be used to bend the pipe. When operating, we should pay attention to the bending radius of the line tube can not be too small (six times of the pipe diameter size). Second, we should gradually move the supporting point of force in the bending, and force should be uniform to avoid bending the line tube.

C. set of silk. Wire tube sleeve can be used for special wire plate appliances, also can use water pipe sleeve machine, the former light, the latter is more bulky, but the latter can adjust the blade to adapt to a variety of pipe diameter sleeve wire, and in the sleeve wire is more labor saving.

When the wire to continue to drop oil on the wire knife, to maintain lubrication to reduce resistance, when the set does not move, you can back the knife so that the iron scrap can be discharged smoothly. After the wire is set, the pipe mouth should be filed flat with a round file, so as not to scratch the wire when wearing it.

(3) Line pipe installation: in the way of laying line pipe, install hanging parts or boom at a distance of 1.5-2.5m. Cover the tube mouth with rubber mouth, put on the traction thin wire in the tube, and install the joint or junction box. Fix the line pipe on the hanger or hanger rod with the pipe code, and connect each section of the line pipe with the joint or junction box to make it a whole pipe.

Lead the branches of the loop pipes to the distributor (box) above the concentration, and then along the wall (cylinder) line pipe orderly lead to the distributor (box) internal fixation. In the connection point of the wired pipe (including joint, junction box, cable box, lamp box, switch box, distribution panel) and other places, with the diameter of not less than 2.5mm thick hot-dip galvanized steel wire for the jumper wire and pipeline welding firm, so that the pipeline welding into an electrical whole and grounding.

(4) Laying electric wires

After above each job is finished, can undertake threading job, use electric wire divides accord with design outside discharge, had better be able to choose the electric wire of different color, its purpose facilitates the electric wire of different loop that identifies same tube. When identifying color is not enough, a knife can be used to cut a number of gaps on the wire end to try to identify. Of course, a lot of effort can be saved if there are "coding granules" set as identification marks on the line end.

When threading, identification marks shall be made for the live line, zero line and lamp control line of each loop, and the wire shall be threaded into the tube with the iron wire reserved for online tube in sections. The wiring work can be carried out after the circuit wires are threaded. Each section of line connector is connected in the junction box, and the junction box cover is well covered after the connection, and each lamp line is led out from the junction box of the lamp cap. The method is as follows: According to the number of lamp caps, the same number of hose joints are installed in the "knock hole" of the lamp junction box, and the metal hose is installed on each joint, and the lamp lead is led to the lamp by the metal hose of the lamp junction box, and then the lamp cap box is covered.