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1. WO2019188184 - NON-PULSATING PUMP

Publication Number WO/2019/188184
Publication Date 03.10.2019
International Application No. PCT/JP2019/009665
International Filing Date 11.03.2019
Chapter 2 Demand Filed 05.09.2019
IPC
F04B 11/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
11Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
F04B 13/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
13Pumps specially modified to deliver fixed or variable measured quantities
CPC
F04B 11/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
11Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
F04B 11/005
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
11Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
005using two or more pumping pistons
F04B 13/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
13Pumps specially modified to deliver fixed or variable measured quantities
F04B 17/03
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
17Pumps characterised by combination with, or adaptation to, specific driving engines or motors
03driven by electric motors
F04B 2201/0206
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
2201Pump parameters
02Piston parameters
0206Length of piston stroke
F04B 2203/0903
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
2203Motor parameters
09of linear hydraulic motors
0903Position of the driving piston
Applicants
  • 日機装株式会社 NIKKISO CO., LTD. [JP]/[JP]
Inventors
  • 村越 富三雄 MURAKOSHI Fusao
Agents
  • 特許業務法人YKI国際特許事務所 YKI INTELLECTUAL PROPERTY ATTORNEYS
Priority Data
2018-06170228.03.2018JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) NON-PULSATING PUMP
(FR) POMPE SANS PULSATIONS
(JA) 無脈動ポンプ
Abstract
(EN) When a pipe pressure P_L of a common discharge pipe (36) during an independent discharge step in which only one reciprocating pump among a plurality of reciprocating pumps (20, 40) discharges a fluid to the common discharge pipe (36) differs from internal pressures P_OR1, P_OR2 in pump chambers (220, 240) of the respective reciprocating pumps (20, 40) at discharge step start point angles θ2, θ5 that are determined to correspond to a cam angle θ of a cam mechanism (16) with respect to the predetermined reciprocating pumps (20, 40), a stroke adjustment mechanism (80) adjusts, on the basis of a pressure difference ΔP therebetween, effective stroke lengths of cross heads (28, 48) connected to plungers (26, 46) of the predetermined reciprocating pumps (20, 40) so that the time at which the internal pressures P_OR1, P_OR2 in the pump chambers (220, 240) reach the pipe pressure P_L is at the discharge step start point angles θ2, θ5.
(FR) Selon l'invention, lorsqu'une pression de tuyau P_L d'un tuyau d'évacuation commun (36), pendant une étape d'évacuation indépendante dans laquelle seule une pompe alternative parmi une pluralité de pompes alternatives (20, 40) évacue un fluide vers le tuyau d'évacuation commun (36), diffère des pressions internes P_OR1, P_OR2 dans des chambres de pompe (220, 240) des pompes alternatives respectives (20, 40) à des angles θ2, θ5 de point de départ de l'étape d'évacuation définis pour correspondre à un angle de came θ d'un mécanisme à cames (16) par rapport aux pompes alternatives prédéfinies (20, 40), un mécanisme de réglage de course (80) peut régler, en fonction d'une différence de pression ΔP, des longueurs de course effective des crosses de piston (28, 48) reliées à des plongeurs (26, 46) des pompes alternatives prédéfinies (20, 40), de sorte que le moment où les pressions internes P_OR1, P_OR2 dans les chambres de pompe (220, 240) atteignent la pression de tuyau P_L soit au niveau des angles θ2, θ5 de point de départ de l'étape d'évacuation.
(JA) 複数の往復動ポンプ(20,40)のうち、一台の往復動ポンプのみが共通吐出配管(36)に流体を吐出する単独吐出工程における共通吐出配管(36)の配管圧力P_Lと、所定の往復動ポンプ(20,40)に対してカム機構(16)のカム角度θに対応して定められた吐出工程開始点角度θ2,θ5における、当該所定の往復動ポンプ(20,40)のポンプ室(220,240)の内圧P_OR1,P_OR2とが異なるときに、その圧力差ΔPに基づいて、ストローク調整機構(80)は、ポンプ室(220,240)の内圧P_OR1,P_OR2が配管圧力P_Lに到達する時点が吐出工程開始点角度θ2,θ5となるように、上記所定の往復動ポンプ(20,40)のプランジャ(26,46)に接続されたクロスヘッド(28,48)の有効ストローク長を調整する。
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