CN103696927A

CN103696927A - Four-cylinder and double-action reciprocating type gas fluid mixture pump

Info

Publication number: CN103696927A
Application number: CN201310744651.7A
Authority: CN
Inventors: 张生昌; 邓鸿英; 马艺; 张志鸿; 马中强
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2014-04-02

Abstract

A four-cylinder and double-action reciprocating type gas fluid mixture pump comprises a power end and a fluid end, wherein an opening is formed in the top of a work cavity of a fluid cylinder; and a linking flow channel of a combination valve is connected with the opening in the top of the work cavity. The gas fluid mixture pump is uniform and high in flow and high in work efficiency; and vibration influence on equipment is low.

Description

Four cylinder Double-action reciprocating formula gas fluid mixture pumps

Technical field

The present invention relates to the reciprocating mixing pump of gas-liquid two-phase, particularly four cylinder Double-action reciprocating mixing pumps.

Background technique

Notification number is the Chinese patent of CN102213205A, a kind of three cylinder Double-action reciprocating formula mixing pumps are disclosed, in actual using process, find that the flow curve of this three cylinder reciprocating mixing pumps within each cycle is inhomogeneous, be that input shaft rotates a circle as one-period, flow pulsation is larger, can produce vibration to mixing pump and oil transport pipeline, the stressing conditions of machine integral body and pipeline is complicated, affects the normal use of equipment; And the flow of three cylinder mixing pumps is less, inefficiency.

Summary of the invention

For solve prior art mass flow discrepancy even, equipment is produced to vibration, little, the ineffective problem of flow, a kind of four cylinder Double-action reciprocating mixing pumps are provided, this mixing pump flow is even, little on vibration equipment impact, flow is large, working efficiency is high.

For addressing the above problem, the technological scheme that the present invention's four cylinder Double-action reciprocating formula gas fluid mixture pumps adopt comprises:

Four cylinder Double-action reciprocating formula gas fluid mixture pumps, comprise power end and fluid end, and power end comprises the pump housing, input shaft, crankshaft-and-connecting-rod, and input shaft is connected by crank pin with bent axle, is connected with connecting rod on crank pin; Fluid end comprises piston rod and fluid cylinder, and the piston ring on piston rod is divided into Liang Ge work chamber by fluid cylinder, and Liang Ge work chamber is respectively arranged with opening, at opening, combination brake switch and proporting is installed; Piston rod is connected by crosshead with connecting rod, between piston rod and fluid cylinder, by black box, seals; Every group of interconnective connecting rod and piston rod, and corresponding fluid cylinder and the combination brake switch and proporting that is installed on it are a pump unit; The opening of the work chamber of described fluid cylinder is arranged on top, and the link runner of combination brake switch and proporting is communicated with the open top of work chamber.

Described bent axle is connected in sequence by four crank pins by five crank pieces, and the phase angle of the first crank pin and four-throw pin is π, and the phase angle of the first crank pin and the 3rd crank pin is pi/2, and the phase angle of the first crank pin and the second crank pin is 3 pi/2s.

Piston is divided into fluid cylinder the active chamber of two sealings, in stroke of piston, an active chamber is carried out to the suction of medium, another active chamber is carried out the discharge of medium simultaneously, the media expansion power of suction chamber is to doing work in compression chamber, be conducive to reduce piston end surface stressed, can also to opposite side, play seal action by a side pressure medium, improve the reliability of sealing.

At fluid cylinder work chamber top, offer opening, the link runner of combination brake switch and proporting directly communicates with it, can make like this mixing pump first liquid be sucked to the pump housing when mixed defeated, first Exhaust Gas during discharge, improved compression ratio, the generation that reduces bubble in liquid to break and produce intense impact phenomenon, the operation of pump is more steady, and the life-span is longer.

Described bent axle is four to turn five fulcrum combined bent axles, bent axle is comprised of five crank pieces, crank interblock connects by crank pin, crank pin connection mouth eccentric setting, and four crank pins arrange by different phase angles, and such structure can realize the balance between bent axle, improve the power utilization rate of pump, and the suction of four self-contained pump unit or discharge process make total quantity delivered large after mutually superposeing, flow pulsation is little.

Because the rotating speed of the input shaft of mixing pump can not infinitely improve, once paranormal rotating speed will cause unit exception vibration, equipment cannot normally be used.

Under same rotational speed, identical operating conditions, in the identical situation of the physical dimension of equipment, in actual motion, the input discharge flow rate of four cylinder mixing pumps is higher more than 1.5 times than three cylinder mixing pumps, and working efficiency improves very obvious; And nondimensional mass flow curve also than three cylinders steadily.

With reference to accompanying drawing, at connecting rod, than λ, be 0.25, in the situation that COEFFICIENT K is 0.8, the nondimensional mass flow curve of four cylinders is compared the nondimensional mass flow curve of three cylinders and is wanted steadily.Wherein the parameter connecting rod of flow curve is than λ=r/l, and r is crank radius, and l is length of connecting rod; K=1-Ar/A, Ar is piston rod sectional area, A is that piston cross-section is long-pending.

Accompanying drawing explanation

Fig. 1 is the structural representation of facing of the embodiment of the present invention.

Fig. 2 is the plan structure schematic diagram of the embodiment of the present invention.

Fig. 3 is the work chamber of the embodiment of the present invention and the linkage structure schematic diagram of combination brake switch and proporting.

Fig. 4 is the zero dimension discharge flow rate curve of the embodiment of the present invention.

Fig. 5 is the zero dimension discharge flow rate curve of three cylinder mixing pumps.

In figure, be labeled as: 1 pump housing, 2 crosshead guide rails, 3 black boies, 4 combination brake switch and proporting, the 5 right work chamber of fluid cylinder, 6 piston rings, 61 piston heads, 62 piston rods, the 7 left work chamber of fluid cylinder, 8 crosshead links, 9 connecting rods, 10 input shafts, 12 fluid cylinders, 13 pump housing inner chambers, 21 crank pieces, the link runner of 30 combination brake switch and proporting, 40 first crank pins, 41 second crank pins, 42 the 3rd crank pins, 43 four-throw pins, the open top of 52You work chamber, the open top of 72Zuo work chamber.

Embodiment

Embodiment one

With reference to accompanying drawing, four cylinder Double-action reciprocating formula gas fluid mixture pumps, comprise power end and fluid end, power end comprises the pump housing 1, input shaft 10, crankshaft-and-connecting-rod 9, input shaft is connected by crank pin 20 with bent axle, is connected with connecting rod on crank pin, and bent axle is comprised of the crank piece being connected with crank pin; In this example, bent axle is connected in sequence by four

crank pins

40,41,42,43 by five crank pieces 21, the phase angle of the first crank pin and 40 four-throw pins 43 is π, the phase angle of the first crank pin 40 and the 3rd crank pin 42 is pi/2, and the phase angle of the first crank pin 40 and the second crank pin 41 is 3 pi/2s.

Fluid end comprises piston rod 62 and fluid cylinder 12, piston ring 6 on piston head 61 is divided into 7 He You work chamber 5 of left work chamber by fluid cylinder, Liang Ge work chamber is respectively arranged with opening 52,72 at top, at opening, combination brake switch and proporting 4 is installed, the open top of the link runner 30Yu work chamber of combination brake switch and proporting is communicated with; Piston rod is connected by crosshead 8 with connecting rod, and the black box 3 of separating liquid cylinder working chamber and power end pump housing inner chamber 13 is installed between crosshead link and piston ring.Every group of interconnective connecting rod and piston rod, and the fluid cylinder of this piston rod is installed and the combination brake switch and proporting that is installed on it is a pump unit.

Input shaft 10 rotates, by crank pin 20, rotate and drive the bent axle being formed by crank to rotate, the connecting rod being connected with crank pin is by crosshead link, circular-rotation is converted into straight reciprocating motion, by crosshead link, in crosshead guide rail 2, carried out straight reciprocating motion and then drive piston rod straight reciprocating motion, each pump unit is in piston rod to-and-fro motion process, to a left side, You Liangge work chamber carries out compression and expansion, combination brake switch and proporting oil-feed and fuel-displaced respectively, after the filler opening oil-feed of combination brake switch and proporting, by connecting passage, oil is sucked to work chamber, during discharge, the opening of work chamber is located at the top of fluid cylinder, so the gas in oil is first discharged from open top, and then fluid is discharged.Fluid flows into work chamber by combination brake switch and proporting, and then piston rod carries out supercharging to work chamber, then discharges through combination brake switch and proporting.

Claims

1. four cylinder Double-action reciprocating formula gas fluid mixture pumps, comprise power end and fluid end, and power end comprises the pump housing, input shaft, crankshaft-and-connecting-rod, and input shaft is connected by crank pin with bent axle, is connected with connecting rod on crank pin; Fluid end comprises piston rod and fluid cylinder, and the piston ring on piston rod is divided into Liang Ge work chamber by fluid cylinder, and Liang Ge work chamber is respectively arranged with opening, at opening, combination brake switch and proporting is installed; Piston rod is connected by crosshead with connecting rod, between piston rod and fluid cylinder, by black box, seals; Every group of interconnective connecting rod and piston rod, and corresponding fluid cylinder and the combination brake switch and proporting that is installed on it are a pump unit; The opening that it is characterized in that the work chamber of described fluid cylinder is arranged on top, and the link runner of combination brake switch and proporting is communicated with the open top of work chamber.

2. four cylinder Double-action reciprocating formula gas fluid mixture pumps as claimed in claim 1, it is characterized in that bent axle is connected in sequence by four crank pins by five crank pieces, the phase angle of the first crank pin and four-throw pin is π, the phase angle of the first crank pin and the 3rd crank pin is pi/2, and the phase angle of the first crank pin and the second crank pin is 3 pi/2s.