Safety measures for installation and use of the ho

2022-07-30
  • Detail

Safety measures for installation and use of water transfer station

the water transfer station is set for drainage in the next construction. The chamber floor of the water transfer station is located at the level of -510.54 m in vertical depth. Two transformers ksjl-320/6, two high-voltage explosion-proof distribution boxes PB to B, three starting cabinets, two explosion-proof switches and two horizontal pumps 100dm-100*6 with a flow of 85m3/h are arranged in the chamber

for the installation of water transfer station, after the chamber support of the water transfer station is completed and the formwork is constructed downward, the main purpose is to prevent blasting from damaging the equipment and cables of the water transfer station. The embedded parts of the fence and sliding platform shall be embedded when pouring the concrete of the chamber base. The embedded parts of the sliding platform must be leveled and aligned according to the center line of the chamber. Two lifting rings are installed in the chamber 1m away from both sides of the chamber opening for the convenience of lifting equipment. The equipment shall be inspected before installation, and the damaged equipment shall be repaired in time. Before installation, the ropes and shackles used shall be inspected and qualified before use. Transport the equipment that needs to go down the well to the wellhead and place it

during installation, make the upper hanging plate level with the chamber floor to facilitate the transportation of equipment into the chamber of the water transfer station. First lower and install two transformers. An inverted wedge shall be made on the transformer foundation. Hang the transformer with steel wire rope at the wellhead, and then lower it with the main lifting hook. When the transformer is lowered to the upper hanging plate, a 5T hoist is hung on the lifting ring of the chamber, and the transformer is hung with the 5T hoist to guide the transformer into the chamber. Drill an inverted wedge on the chamber top above the transformer foundation, hang a 5T hoist on the steel wire rope head of the inverted wedge, pull the transformer to the foundation, level, align and install the transformer. Then the starting cabinet, high-voltage explosion-proof distribution box, explosion-proof switch and horizontal pump shall be lowered, leveled, aligned and installed. The method of moving the equipment into the chamber is the same as that of moving the transformer into the chamber. The last one is to lower the horizontal pump. Make sure that the motor end is downward when lowering the horizontal pump

after the equipment is moved into the chamber and installed, the local market supervision departments strengthen the supervision of the production source to connect the power and install the water suction and drainage pipelines. Install the suction pipe from the suction port of the water pump, connect the elbow, suction short pipe and suction bottom valve, tighten the connecting bolts of each flange, and place rubber asbestos rings at the interface of each pair of flanges. The drainage pipeline, regulating valve, check valve and short drainage pipe (steel braided pipe) shall be installed from the drainage of the water pump. Connect the short drain pipe with the main drain pipe( φ 127 steel pipe) put snap rings at the interface of each pair of flange plates, and tighten the connecting bolts of each flange plate. The short drain pipe is connected with the main drain pipe by flange. Install a socket at the main drain. Therefore, the reservoir is divided into inlet reservoir and outlet reservoir by filtration, and the inlet pipeline is installed to the inlet reservoir of the reservoir

finally install the fixed fence and the sliding platform for getting on and off. When installing the sliding platform guide rail, ensure the spacing between the two guide rails and the levelness of both ends of the guide rail. The guide rail for fixing the fence and sliding platform must be firmly welded with the embedded parts

after the equipment is installed, it can only be used after it is powered on for test run. Before use, it must be tested for leakage protection. It can only be used after the protection is reliable

Description: the power, lighting, signal and communication cables of the water transfer station adopt a 520m long steel beam suspended on the fixed steering wheel steel beam near the chamber of the water transfer station φ 26mm steel wire rope is led into the diversion chamber. When lowering the steel wire rope and cable, first disconnect the No. 2 formwork rope from the formwork and lift it to the wellhead. hold φ The 26mm steel wire rope is connected with the front end of the formwork rope and wrapped on the stable vehicle with the formwork, and then the cable is clamped with the cable clamp φ 26 on the steel wire rope, lower the steel wire rope and cable. When clamping the cable, it shall be noted that the cable shall be 15m longer than the front end of the steel wire rope for easy introduction into the water transfer station. When the cable reaches the water transfer station and has enough length, it shall be installed at the fixed plate at the wellhead φ Fixing the upper end of the 26mm steel wire rope can change the moving speed of the beam. Disconnect the formwork rope from the steel wire rope on the steel beam, lower the formwork rope to the formwork and fix it with the formwork. The cable shall be clamped with two cable supports at the chamber opening. The cable of the large pump on the hanging tray is led out from the water transfer station and fixed to the shaft wall with the hanging tray downward. Two cable clips are used φ 20mm expansion bolts are fixed on the shaft wall

when the water transfer station is in the normal drainage section and the personnel go up and down the bucket, the bucket position is that the upper edge of the bucket is not lower than the platform surface and 500mm higher than the platform surface. Before personnel go up and down, the bucket and platform shall be fixed with ropes without relative displacement. The buckets of the upper and lower personnel are parked at the water transfer station. People stand in the buckets. People in the chamber untie the rope tied to the water pump base and push the sliding platform. After entering the water transfer chamber, people pull the sliding platform back into the chamber to avoid affecting the access of the buckets. On the contrary, after the personnel in the water transfer chamber return to the bucket, the passing platform shall be timely pulled back to the chamber and firmly tied to the base of the horizontal pump with a rope. A set of reliable acousto-optic signal system and anti noise machine are arranged in the water transfer station to connect with the wellhead signal room. At the same time, a set of TV monitoring device is installed in the chamber to directly connect to the winch room, so that the winch driver can visually see whether the personnel entering and leaving the water transfer chamber safely reach or leave the sliding platform. The water transfer station staff shall take over the shift in the chamber, and can leave the post after being cleared. For the maintenance of large pumps in the underground water transfer station, tools and accessories must be placed away from the opening of the chamber (the distance shall not be less than 2m). Leakage protection test shall be conducted frequently for the water transfer station in use, and overall inspection shall be conducted for the power supply system

installation safety precautions for water transfer station:

1. All lifting appliances must be checked and can be used only after they are confirmed to be correct

2. When lowering the equipment, the command must be unified, and the signal of the use range of the waterproof testing machine must be clear

3. When gas cutting and electric welding are used underground, good ventilation and fire prevention measures shall be taken underground, and the bottom of the electric welding machine shall be padded with rubber to prevent electric leakage

4. Prevent falling objects from injuring people when lowering equipment at the wellhead

5. When lowering the equipment, a comprehensive inspection shall be conducted after the equipment is lifted off the ground, and the lifting and lowering can be continued only after there is no abnormality in the lifted equipment

Tangkou main well project department

September 27, 2002

Copyright © 2011 JIN SHI