PROBLEM TO BE SOLVED: To provide a pump device etc. which secure electric connection with a sacrifice anode with a simple structure to make electric field corrosion less likely to occur.SOLUTION: A pump device of the invention includes: a housing 181 in which an oil flow passage is formed; a cylinder 51 which is provided so as to contact with the housing 181; and a sacrifice anode which is connected to one of the housing 181 and the cylinder 51 and inhibits corrosion of the housing 181 and the cylinder 51. Further, at least one of the housing 181 and the cylinder 51 has a processed part 181s which interrupts electric connection between the housing 181 and the cylinder 51. The pump device includes a relief valve 300 which is provided in a relief passage 123, controls flow of an oil flowing in the relief passage 123, and electrically connects the housing 181 with the cylinder 51.SELECTED DRAWING: Figure 5
【課題】簡易な構成により犠牲アノードとの電気的な接続を確保し、電界腐食が生じにくいポンプ装置等を提供する。【解決手段】本発明のポンプ装置は、オイルが流れる流路が形成されたハウジング181と、ハウジング181と接触して設けられるシリンダ51と、ハウジング181およびシリンダ51のいずれか一方に接続され、ハウジング181およびシリンダ51の腐食を抑制する犠牲アノードとを備える。また、ハウジング181およびシリンダ51の少なくとも一方は、ハウジング181およびシリンダ51の電気的な接続を遮断する被処理部181sを有し、リリーフ路123内に設けられリリーフ路123を流れるオイルの流れを制御するとともに、ハウジング181およびシリンダ51を電気的に接続するリリーフバルブ300を備える。【選択図】図5
PUMP DEVICE AND SHIP PROPULSION MACHINE
ポンプ装置および船舶推進機
05.09.2016
Patent
Elektronische Ressource
Japanisch
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / C23F Nichtmechanisches Entfernen metallischer Stoffe von Oberflächen , NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES / F16K VALVES , Ventile |
SHIP PROPULSION MACHINE AND SHIP PROPULSION MACHINE SET
Europäisches Patentamt | 2023
|TRIM/TILT DEVICE FOR SHIP PROPULSION MACHINE, AND SHIP PROPULSION MACHINE
Europäisches Patentamt | 2017
|