[특허]Apparatus for pumping cement slurry

Apparatus for pumping cement slurry 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04B-009/08 F04B-035/02 F04B-043/08 F04B-015/02
출원번호	US-0486382 (1974-07-08)
발명자 / 주소	Ray Jr. Jess B. (3150 E. 62 St. Tulsa OK 74136) Nourse Billie Eugene (Rte. 4 Bristow OK 74145)
인용정보	피인용 횟수 : 34 인용 특허 : 0

초록 ▼

A system for pumping cement slurry comprising two pumps connected in parallel in a piping system, each pump comprising a flexible tubular bladder connected between two tubular elements and surrounded by a cylindrical housing so as to provide a closed annular space between the bladder and the housing. There is an inlet check valve and an outlet check valve on each of the two pumps. Pressure fluid is provided by a cylinder and power driven piston, which oscillates in the cylinder, from one end to the other. Each end of the cylinder is connected to one of the two annular spaces so that when the annular spaces and the cylinder are filled with pressure fluid, oscillation of the piston will cause sequential compression and expansion of the bladders, and pumping of cement slurry through the inlet check valves and out of the outlet check valves providing a substantially constant flow of slurry.

대표청구항 ▼

A cement slurry pumping system comprising: a. first and second apparatus for pumping a slurry of cement particles and water, each apparatus comprising 1. inlet tubular means having an inlet ball check valve at a first end including means to restrain said ball means to the vicinity of the valve seat; 2. flexible tubular bladder means and circumferential clamp means to sealably attach said bladder means, at a first end, to the second end of said inlet means, outlet check valve seat means attached to the second end of said bladder means by circumferential clamp means; 3. rigid cylindrical housing means removably attached at its first end to said inlet means, said housing means of larger diameter than and surrounding said bladder means, providing an annular space therebetween, said housing means supporting said outlet check valve seat means, said clamp means being in said annular space; and 4. outlet tubular means and outlet ball valve means removably attached to said housing means and coupled to said outlet check valve seat means, and including means to restrain said ball means to the vicinity of said seat means; b. additional tubular means to couple both of said inlet tubular means to an inlet pipe means and to couple both of said outlet tubular means to an outlet pipe means, the internal surfaces of said inlet tubular means, inlet check valve, said bladder means, said outlet check valve seat means, and said additional tubular means being contoured to prevent accumulations of cement slurry in pockets, said means to couple said inlet means and said means to couple said outlet means comprising a Y-shaped means, said first and second apparatus being positioned parallel and adjacent to each other; c. cylinder means and piston means sealably slidable in said cylinder means, and piston rod means attached to said piston means; d. first conduit means connected from a first end of said cylinder means to said first annular space, and second conduit means connected from the second end of said cylinder means to said second annular means, said cylinder, conduits and annular spaces filled with pressure fluid; and e. means to cyclically oscillate said piston rod to apply fluid pressure to each of said annular spaces in a manner so that high pressure is applied to a first annular space while low pressure is applied to the second annular space and vice versa.

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Apparatus for pumping cement slurry 원문보기

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