Quick and active cooling trepanning method for condensation pipe of hydraulic machine oil tank
A technology of condensing pipes and active heat dissipation, which is used in fluid pressure actuation devices, fluid pressure actuation system components, mechanical equipment, etc., and can solve the problems of uneven temperature field distribution in the fuel tank, unreasonable cooling pipe design, and small cooling range. , to achieve the effect of improving cooling, rapid diffusion and sufficient heat exchange
Active Publication Date: 2018-07-24
ZHEJIANG UNIV
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Problems solved by technology
[0003] In order to solve the problem of poor cooling effect caused by unreasonable design of the condensate pipe of the fuel tank, the present invention provides a method for quickly and actively dissipating heat from the condensate pipe of the hydraulic oil tank, which solves the problem of small cooling range and low The problem of uneven distribution of temperature field
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[0057] The present invention will be further described below in conjunction with drawings and embodiments.
[0058] Such as figure 1 Shown, embodiment of the present invention and concrete implementation process thereof are as follows:
[0059] This embodiment is specifically a GYZ1669 separate hydraulic oil tank, and the initial temperature of the oil tank is T 1 =60℃, condensing pipe length L 1=600mm, initial condensing pipe diameter size D 1 = 50mm. No. 46 hydraulic oil in the oil tank, density 872.5kg / m 3 , The viscosity coefficient at 50°C is 0.00045Pa.S. The pipe wall is 45 steel, and the roughness n of the pipe is 0.0053. The pressure at the condensation port is 0.5MPa. The outlet velocity of the condensation port is 1.2m / s. The turbulence model is used in the simulation, and the turbulence intensity is 3.4%.
[0060] After calculation, the total flow Q of the condensing pipe 1 =1.9625×10 -3 m 3 / s.
[0061] In the embodiment, one oil outlet hole is opened ...
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The invention discloses a quick and active cooling trepanning method for a condensation pipe of a hydraulic machine oil tank. The two symmetrical sides of the condensation pipe are each provided witha row of through holes to serve as oil outlet holes, and the row of oil outlet holes in each side are evenly distributed between the two ends of the condensation pipe along the axial straight lines atintervals; the hole diameters of the oil outlet holes are calculated, the total flow of the condensation pipe is calculated according to parameters of the condensation pipe and the oil tank, flow ofall oil outlet holes is calculated according to the total flow and the total number of the oil outlet holes, the distances of the adjacent oil outlet holes in the condensation pipe are calculated, then the trepanning diameters of the condensation oil outlet holes are calculated according to the flow and the flowing speed of the oil outlet holes, whether interference exists in zones of condensationliquid jetted from the condensation oil outlet holes or not is judged, and the condensation pipe trepanning prioritization scheme capable of enabling cooling liquid to be quickly diffused to the largest scope is found. By means of the quick and active cooling trepanning method, optimization design is made for the condensation pipe of the oil tank, and it is guaranteed that under the same coolingcondition, the cooling liquid can be quickly diffused to the largest scope, and the better oil tank cooling effect is achieved.
Description
technical field [0001] The invention relates to an improvement scheme of a condensation pipe of a hydraulic oil cooling return system, in particular to a method for quickly and actively dissipating heat from a condensation pipe of a hydraulic oil tank. Background technique [0002] For the existing cooling problem of the fuel tank, the current condensing pipeline only sends the condensed liquid back to the fuel tank. Because the pipeline is not properly designed, the pipeline has only one oil outlet. It causes problems such as uneven temperature distribution of the overall fuel tank and concentration of cooling liquid. The invention proposes a method for quickly and actively dissipating heat from a condensing pipe of a hydraulic oil tank, based on the optimization idea that the cooling liquid can be quickly diffused to the maximum range. By arranging oil outlet holes with reasonable spacing and size on the condensing pipe, the cooled liquid can fill the entire oil tank are...
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IPC IPC(8): F15B21/04
CPCF15B21/042
Inventor 冯毅雄赵彬高一聪
Owner ZHEJIANG UNIV