Barrel-hammer-following circulating water cooling system

Abstract

The invention discloses a barrel-hammer-following circulating water cooling system which comprises a lower cylinder and a water-cavity outer wall fixedly connected on the lower cylinder. A cooling water cavity is formed between the lower cylinder and the water-cavity outer wall, a cooling water tank and a circulating pump unit are serially connected between a water outlet and a water inlet of the cooling water cavity through a cooling water pipe, the circulating pump unit is electrically connected with a controller, a water outlet of the cooling water cavity is communicated with a pressure sensor and a temperature sensor which are electrically connected with the controller respectively, and at least one section of the cooling water pipe is a soft water pipe. Through circulation of cooling water outside the water cavity, quick dissipation of heat of a lower cylinder of a barrel hammer is realized, so that temperature rise of the lower cylinder is controlled effectively and large-tonnage continuous running of the barrel hammer is realized.

Description

technical field [0001] The invention relates to a cylinder-type diesel piling hammer used for pile foundation engineering, in particular to a cooling system of a lower cylinder of the cylinder-type diesel piling hammer. Background technique [0002] Drum-type diesel piling hammer uses the fuel energy to push the upper piston up and down to generate impact to hammer piles. It is widely used in marine engineering for its advantages of large impact force, high work efficiency, strong reliability, and convenient operation and maintenance. , sea-crossing bridges, oil drilling platforms and offshore wind farms are under construction. [0003] During the hammering process of the cylinder type diesel piling hammer, a large amount of heat generated by the combustion and explosion of the fuel oil needs to be dissipated through the surface of the lower cylinder block of the pile driving hammer. Otherwise, the heat of the lower cylinder cannot be dissipated in time, and the temperature ...

AI Technical Summary

Problems solved by technology

It will generate a huge amount of heat during the piling process, and only relying on the convective heat exchange between the cooling fins on the lower cylinder block and the air is obviously unable to meet the heat dissipation effect of the piling hammer; therefore, people began to try to use a steel welded water tank structure. However, under the action of continuous high temperature and shock vibration, the weld seam connected to the water jacket shell, suction and exhaust ports of this structure will soon crack due to high temperature and vibration fatigue, causing the cooling water to leak and lose water cooling. At the same time, the cracked welds will also make the water flow into the lower cylinder body along the welds of the suction and exhaust ports, oil injection ports, etc.

[0005] For this reason, the applicant applied for "Integral Lower Cylinder with Convex Rib Water Chamber and Its Barrel Diesel Piling Hammer" (Patent Application No. 201410416982.2), which realizes the weldless connection between the water chamber casing and the cylinder body, Effectively solved the problem of leakage and desoldering of the cooling water chamber, and enhanced the rigidity and strength of the lower cylinder block, but this water chamber still cannot change the capacity and heat dissipation efficiency of the water chamber. In the lower case, the cooling water in the water chamber will be heated and boiled and evaporate quickly, so the cooling water cannot be replenished in time. The water chamber after the cooling water evaporates will hinder the heat dissipation of the lower cylinder instead.

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