CN202867183U

CN202867183U - Pump cylinder capable of working independently

Info

Publication number: CN202867183U
Application number: CN201220552584XU
Authority: CN
Inventors: 吴继农; 黎瑶; 高原; 李运柱; 曹庆保; 李欣; 庄庆武
Original assignee: China Petroleum and Chemical Corp; Sinopec Jianghan Oilfield Co Jianghan Oil Production Plant
Current assignee: China Petroleum and Chemical Corp; Sinopec Jianghan Oilfield Co Jianghan Oil Production Plant
Priority date: 2012-10-26
Filing date: 2012-10-26
Publication date: 2013-04-10
Anticipated expiration: 2022-10-26

Abstract

The utility model provides a pump cylinder capable of working independently. The pump cylinder capable of working independently is characterized by comprising a cylinder-shaped pump cylinder, the cylinder-shaped pump cylinder is sleeved with a piston, an outer sleeve of the cylinder-shaped pump cylinder is provided with an upper outer shell, and the lower end of the cylinder-shaped pump cylinder and the lower end of the upper outer shell are respectively connected with a sealing connector. An upper riffling room is formed between the cylinder-shaped pump cylinder and the upper outer shell. The piston reciprocates up and down, a relative motion between the piston and the working pump cylinder is produced, and a goal of oil pumping is achieved. The pump cylinder capable of working independently is directly connected with the sealing connectors to form an independent working area, and working rigidity is guaranteed. The lower end of the pump cylinder capable of working independently is a righting pump cylinder, and the righting pump cylinder plays a role of righting when working. The pump cylinder capable of working independently has the advantages of being simple in structure and free from parts, accessories and leakage points and guaranteeing oil pumping performance.

Description

Pump barrel works alone

Technical field

The utility model relates to the petroleum industry oil well pump pump barrel that works alone.

Background technique

The oil well pump of long-plunger, short pump barrel structure because have sands-proof check, sand control buries and the advantage such as wear-resistant, and be widely used in having in the oil well pump of sand-proof function.But such oil well pump exists that Component are many, complex structure, leakage point is many and affect its oil pumping performance, and the pump barrel of particularly working links to each other with lower righting pump barrel, and the pump barrel of working in the descent of piston process is in quick condition, and rigidity dies down.

The model utility content

The technical problems to be solved in the utility model is: a kind of pump barrel that works alone is provided, is used for solving the oil well pump stiff problem at work of long-plunger short pump barrel, make this class oil well pump bring into play its due advantage, ensure its normal operation.

The utility model is to solve the problems of the technologies described above the technological scheme of taking to be: a kind of pump barrel that works alone, it is characterized in that: it comprises a cylindricality pump barrel, cylindricality pump barrel and piston socket, cylindricality pump barrel overcoat has upper shell, and the lower end of cylindricality pump barrel is connected with SEALING FITTING respectively with the lower end of upper shell; Form upper sand setting chamber between cylindricality pump barrel and the upper shell.

Press such scheme, described cylindrical pump tube length degree is 1.2 meters.

The beneficial effects of the utility model are:

1, piston pumps, and produces relative movement with the work pump barrel, reaches the purpose of oil pumping; The work pump barrel directly is connected with SEALING FITTING, forms an independently working zone, has guaranteed the work rigidity; The lower end is the righting pump barrel, only plays righting during work.

2, the pump barrel that originally works alone is simple in structure, without Component and leakage point, has guaranteed the oil pumping performance.

Description of drawings

Fig. 1 is the utility model one embodiment's application structure figure.

Among the figure: 1, piston, 2, upper shell, 3, the cylindricality pump barrel, 4, upper sand setting chamber, 5, SEALING FITTING, 6, the righting pump barrel, 7, clearance hole, 8, lower casing, 9, sand stop ring, 10, lower sand setting chamber, 11, the standing valve assembly, 12, lower contact.

Embodiment

As shown in Figure 1, for the pump barrel that works alone is used in application structure figure in the long stroke sand-proof oil-well pump, the pump barrel that works alone comprises a cylindricality pump barrel 3, cylindricality pump barrel 3 and piston 1 socket, cylindricality pump barrel 3 overcoats have upper shell 2, and the lower end of cylindricality pump barrel 3 is connected with SEALING FITTING 5 respectively with the lower end of upper shell 2; Form upper sand setting chamber 4 between cylindricality pump barrel 3 and the upper shell 2; Piston 1 outer below is also overlapped lower casing 8 is arranged, and connects by SEALING FITTING 5 between the upper lower casing 2,8; Be provided with righting pump barrel 6 between lower casing 8 and the piston 1, are connected the lower end and all are connected with standing valve assembly 11 by lower contact 12 in lower casing 8 lower ends with the righting pump barrel; Righting pump barrel 6 is provided with clearance hole 7, consists of lower sand setting chamber 10 between clearance hole 7 and the lower casing 8.Sand discharge hole 7 is divided into the N group along the piston movement direction, is provided with sand stop ring 9 between every group of clearance hole, and sand stop ring 9 is divided into N separate sand setting zone with described lower sand setting chamber 10, so that each sand setting zone can both sand setting.

In the present embodiment, piston 1 Length Ratio stroke is long 1.5 meters, and cylindricality pump barrel 3 length only are 1.2 meters, and simple in structure, is what separate between its lower righting pump barrel 6 that connects and the cylindricality pump barrel 3, and acts on difference.Therefore, employing originally works alone, and pump barrel does not only affect piston and the relative movement of cylindricality pump barrel is pumped, especially in the descent of piston process since the cylindricality pump barrel be what to separate with the righting pump barrel, and cylindricality pump barrel 3 length are short, so that the cylindricality pump barrel is in steady state but not quick condition, solved the oil well pump stiff problem at work of long-plunger short pump barrel.

Claims

1. pump barrel that works alone, it is characterized in that: it comprises a cylindricality pump barrel, cylindricality pump barrel and piston socket, cylindricality pump barrel overcoat has upper shell, and the lower end of cylindricality pump barrel is connected with SEALING FITTING respectively with the lower end of upper shell; Form upper sand setting chamber between cylindricality pump barrel and the upper shell.

2. the pump barrel that works alone according to claim 1, it is characterized in that: described cylindrical pump tube length degree is 1.2 meters.