CN1204740A

CN1204740A - Directacting transfusion system

Info

Publication number: CN1204740A
Application number: CN 98114656
Authority: CN
Inventors: 江祖德
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-22
Filing date: 1998-06-22
Publication date: 1999-01-13

Abstract

A direct-driven perfusion appratus is composed of hydraulic power cylinder and liquid distribution unit having pilot valve and master valve, both of which are cylindrical commutating slide valves. Said pilot valve is composed of pilot valve core, pilot valve rod, packing chamber, push rod, slide block and ejector. Each of two master valves has valve core and valve body. The information about that piston moves to stop position is transferred via ejector, slide block and push rod to pilot valve core, making the working liquid of master valve commutate to drive hydraulic engine to do work to pump and recover energy. Its advantages are high speed of reciprocating movement, simple structure, small size, light weight high safety and wide range of its usages.

Description

Directacting transfusion system

The present invention relates to fluid pressure energy recovering device, relate in particular to straight moving piston-type hydro pressure infusion set, be called for short Directacting transfusion system.

Chemical reaction in petrochemical iy produced, mass transport process etc., existing in a large number can be for the pressure energy that reclaims.Produce such as middle-size and small-size ammonia factory: 32MPa liquefied ammonia, 12MPa cuprammonia, alkali lye are arranged, 20MPa urea liquid etc. must reduced pressure storage, circulation, regeneration or flash distillation are used, owing to carried a large amount of solids, gaseous impurity secretly in the liquid, permeability is strong and flow discontinuous, inflammable and explosive again corrosivity is strong, therefore, pressure energy recovery technology is quite complicated.So far, both at home and abroad the recoverable hydraulic machine of working pressure has: 1. hydraulic turbine, and it is not suitable for the high pressure small flow, and efficient is lower; 2. water turbine, it is especially big only to be suitable for flow, and the very low occasion of pressure can't be used; 3. oil hydraulic motor, it is unsuitable for gas, solid impurity, the inflammable and explosive petrochemical industry liquid that corrosion is arranged; 4. jet pump can only be suitable for liquid-liquid and mix situation, and efficient is extremely low; 5. directly moving biserial piston type energy reclaims machine, and the whole system bulky complex from introducing so far in the early days of foundation, can't be applied; 6. rotary piston energy-recovering machine, promptly model utility " piston Hydraulic Energy Recovering Machine " has connecting rod, compare with 5, volume is little, system is simple, but the machine rotational speed height, structure is complicated; 7. free piston type energy-recovering machine, promptly model utility " overbottom pressure power piston formula oil hydraulic pump " and 5,6 is compared, and is improved, and has now produced examination more than 3000 hour, and is very promising, but also exists some key technical problems to overcome; 8. floating piston energy-recovering machine, i.e. " floating piston type liquid transporter " compared with above-mentioned, and bigger improvement is then arranged, but can only be applicable to some specific occasion, and must make biserial, makes flow even.

The purpose of this invention is to provide a kind of simple in structure, Directacting transfusion system that efficient is high, safe and reliable.

The present invention takes following measures in order to achieve the above object: it comprises fluid power cylinder and liquid dispensing apparatus two-part; Liquid dispensing apparatus has pilot valve and main valve, and they are cylindrical reversing slide valve; Pilot valve has guide's spool, guide's valve body, fills out letter, push rod, slide block, push rod; Main valve has two, and they have main valve plug and main valve body respectively; Push rod, slide block, push rod pass to guide's spool with piston motion to the information of dead-centre position.

Advantage of the present invention because pump adopts reversing slide valve suction liquid, thereby when having avoided piston stop return, the valve of spring non-return valve hit with cylinder in water attack, improve to-and-fro motion speed greatly.Because piston commutation signal lead-out mode changes, thereby take public cylinder cap and must not fill out the bigger axial distance that shortened of letter.So compared with the prior art have to-and-fro motion speed height, simple in structure, volume is little, in light weight, vibrating noise is little, advantage such as of many uses.

Elaborate below in conjunction with accompanying drawing:

Accompanying drawing is the Directacting transfusion system structural representation.

Directacting transfusion system comprises fluid power cylinder and liquid dispensing apparatus two-part, and fluid power cylinder is by two identical cylinder diameter cylinder bodies, that is two single pumps 7 and fluid power motor 13 are composed in series; The public cylinder cap of two cylinder bodies, piston rod 5 runs through public cylinder cap, and 4 series connection of two pistons are tightened to one, and is reciprocating in cylinder.Liquid dispensing apparatus has pilot valve and main valve, and they are cylindrical reversing slide valve; Pilot valve has guide's spool 8, guide's valve body 9, fills out letter 10, push rod 12, slide block 14, push rod 3; Main valve has two, and they have

main valve plug

1,15 and

main valve body

2,16 respectively; Push rod, slide block, push rod pass to guide's spool with piston motion to the information of dead-centre position.Two main valves are parallel connection separately or series connection, and two main valves also can be head and the tail series connection or head and the tail parallel connection, distribute the dual functions combination valve thereby constitute the liquid with fluid power motor and pump.Directacting transfusion system is horizontal, also can be vertical.When piston moves near dead-centre position, run into push rod, slide block slided act on guide's spool, but also can adopt solenoid valve, by electromagnetic force act on pilot valve, controlling liquid commutation when making dead-center position of piston.

Working principle of the present invention is as follows: during as shown for the nonoculture cylinder, piston is separated into two chambeies with a cylinder body, and a side cylinder chamber of fastening piston rod is a pump, and piston opposite side piston-rodless cylinder chamber then is a fluid power motor; Because piston rod has accounted for a part of piston area, though so be lower than high pressure using system inlet pressure slightly from the pressure of high pressure using system 11 outlets, start on the pusher side piston area power still greater than pump side power but act on, therefore can promote piston reciprocates, the pump work done.When piston moves to dead-centre position left, piston is run into push rod 3, makes framework, and promptly slide block 14 slides left, promote pilot valve push rod 12, pilot valve core 8 is moved to the left, and high pressure liquid body opening P and hole A are communicated with, and low pressure liquid hole O and hole B are communicated with, so controlling liquid commutation, highly pressurised liquid flows to the right chamber of two valve body of

main valve

16,2 through PA, and corresponding promotion valve core of

main valve

15 and 1 is moved to the left, and therefore makes two main valve respective aperture P ₁A ₁, be communicated with the outlet of high pressure using system, P ₂A ₂Be communicated with the import of high pressure using system, and B ₁O ₁Hole B ₂O ₂The hole is by drilling through the import and export that the hole is communicated with low pressure processing system 6 respectively in the middle of the main valve plug; Meanwhile, the liquid in chamber, a valve body of main valve left side enters the low pressure processing system through pilot valve BO hole.Therefore from the highly pressurised liquid of high pressure using system through main valve hole P ₁A ₁Flow into fluid power motor cylinder 13 left chambeies, promote piston and move right,, thereupon, the right chamber of engine cylinder liquid is passed through hole B liquid work done in the pumping cylinder 7 ₁Drill through hole and hole O in the middle of the main valve plug ₁Unload and be depressed into the low service system processing, meanwhile, liquid is subjected to moving right the compression of piston in the pumping cylinder 7, and pressure improves, through main valve A ₂P ₂The hole is pressed into the high pressure using system, and low pressure processing system liquid is through O thereupon ₂B ₂Suck the right chamber of pumping cylinder.So driven plunger constantly moves right, and in the time of will closing on right dead-centre position, again in the opposite direction, in like manner repeats said process, and the piston return is to left movement.Make ceaselessly reciprocatingly like this, reclaimed the waste liq pressure energy of having finished the chemical process effect from high pressure using system outlet, the fresh liquid of having handled in the pump is transported in the high pressure using system goes.The outlet of low pressure processing system also has electronic high-pressure service pump (not drawing among the figure), and a part of low pressure liquid is transported to the import of high pressure using system, makes whole flow process obtain energy and flow equilibrium, constantly running.

Claims

1. Directacting transfusion system, it comprises fluid power cylinder and liquid dispensing apparatus two-part, it is characterized in that said liquid dispensing apparatus has pilot valve and main valve, they are cylindrical reversing slide valve; Pilot valve has guide's spool [8], guide's valve body [9], fills out letter [10], push rod [12], slide block [14], push rod [3]; Main valve has two, and they have main valve plug [1], [15] and main valve body [2], [16] respectively; Push rod, slide block, push rod pass to guide's spool with piston motion to the information of dead-centre position.

2. a kind of Directacting transfusion system according to claim 1 is characterized in that said two main valves are in parallel or series connection separately.

3. a kind of Directacting transfusion system according to claim 1 and 2 is characterized in that said two main valves are head and the tail series connection or head and the tail parallel connection, distribute the dual functions combination valve thereby constitute the liquid with fluid power motor and pump.

4. a kind of Directacting transfusion system according to claim 1, its feature is a solenoid valve at said pilot valve.