PUMP DEVICE

To provide a pump device for a liquefied gas which can efficiently cool an electric motor without leaking the liquefied gas.SOLUTION: A pump device includes: a pump 1 having an impeller 2; a rotary shaft 5 to which the impeller 2 is fixed; an electric motor 7 for rotating the rotary shaft 5 and the...

Full description

Saved in:
Bibliographic Details
Main Authors NAKAMURA YOICHI, MATAKE KOZO
Format Patent
LanguageEnglish
Japanese
Published 17.01.2024
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:To provide a pump device for a liquefied gas which can efficiently cool an electric motor without leaking the liquefied gas.SOLUTION: A pump device includes: a pump 1 having an impeller 2; a rotary shaft 5 to which the impeller 2 is fixed; an electric motor 7 for rotating the rotary shaft 5 and the impeller 2; and a pump side bracket 11 and a non-pump side (a side opposite to the pump) bracket 12 disposed at both sides of the electric motor 7. A motor housing 23 is formed of aluminum or aluminum alloy. Both ends of the motor housing 23 are supported by the pump side bracket 11 and the non-pump side bracket 12. Linear expansion coefficients of the pump side bracket 11 and the non-pump side bracket 12 are smaller than a linear expansion coefficient of the motor housing 23.SELECTED DRAWING: Figure 1 【課題】液化ガスを漏洩させることなく、電動機を効率よく冷却することができる液化ガス用のポンプ装置を提供する。【解決手段】ポンプ装置は、羽根車2を有するポンプ1と、羽根車2が固定された回転軸5と、回転軸5および羽根車2を回転させるための電動機7と、電動機7の両側に配置されたポンプ側ブラケット11および反ポンプ側ブラケット12を備える。モータハウジング23は、アルミニウムまたはアルミニウム合金から構成されており、モータハウジング23の両端は、ポンプ側ブラケット11および反ポンプ側ブラケット12に支持されており、ポンプ側ブラケット11および反ポンプ側ブラケット12の線膨張係数は、モータハウジング23の線膨張係数よりも小さい。【選択図】図1
Bibliography:Application Number: JP20220106837