CN206539543U - Hydraulic pressure intensifier and the fluid pressurized induction system with the device - Google Patents

Abstract

A kind of hydraulic pressure intensifier and the fluid pressurized induction system with the device are disclosed in the utility model, including cylinder barrel, and in cylinder barrel and by piston that the cylinder barrel sealed separation is the first work chamber and the second work chamber, on the piston piston rod is axially provided with along piston, the two ends of the piston rod are fixed to the cylinder barrel, cavity is provided with the piston, the spacing block that the cavities seals are divided into the first control chamber and the second control chamber is installed with the piston rod, it is provided with the axial direction of the piston rod from outside cylinder barrel to two sections of spacing block and controls oil duct, the runner for controlling oil duct connection first to control chamber and the second control chamber at two ends respectively is provided with spacing block, it passes through built in hydraulic control portion, with on the premise of output flow is not changed, reduce the length dimension of equipment as far as possible.

Description

Hydraulic pressure intensifier and the fluid pressurized induction system with the device

Technical field

The utility model is related to fluid pressurized and transportation art, more particularly to a kind of hydraulic system of utilization high-pressure low-flow Control the hydraulic pressure intensifier of large flow fluid and the fluid pressurized induction system with the device.

Background technology

In fluid pressurized and transportation art, the flow of fluid, pressure, viscosity, physical state and unstable and can not The flow regime of control, the production and research and development to pump and compressor propose new challenge.

In high viscosity, the transportation art of huge discharge fluid, because the viscosity of fluid in itself is high, the rotor speed of pump is limited System, therefore, the output discharge capacity of single pump is limited, the need for meeting big row's conveying, it is necessary to which multiple pumps are used in combination, therefore, if Standby cost is higher, and the power of single pump can not be played, and there is larger efficiency and wastes.

And be often the mixed of oil, natural gas and water and solid particle in the field of oil exploitation, the output object of well head , in some cases, or even there is the gas-liquid mixture of one section of liquid, one section of gas, in this case, due to gas-liquid ratio in compound It is uncertain, and the conveying equipment of existing this kind of mixture, if with reciprocating pump, because reciprocating frequence is too high and longevity of check valve Life can not ensure that check valve is also difficult to compatible biphase gas and liquid flow in high frequency, it is impossible to ensure performance, therefore typically use screw pump, This kind of pump is without interior compression process, and the compressibility of gas-liquid is different, it is difficult to meet the conveying needs of gas-liquid mixture.

And bigger gas compression field is compressed for natural gas used for automobile air entraining substation etc., the gas compression generally used Such as equipment is the gas compressing apparatus of hydraulic pump control, the structure described in accompanying drawing 6, and the compression of gas is dependent on piston Motion, and piston action is controlled, the pressure oil in chamber B or C is input into, the compression of gas is completed in chamber A or D , the area of the chamber of gas and liquid differs only by the area of a piston rod, therefore, and the flow of the pressure oil of input is with gas The flow of output is more or less the same, when initial, and groove interior pressure is higher, to meet the pressure oil stream required for the conveying capacity of gas Amount is little, however, with the progress for the process of unloading, gas pressure is gradually reduced in tank car, in order to ensure enough air demands then Pump is needed to provide the hydraulic oil of greater flow to drive piston, and by preceding described, the difference in areas of piston is not away between gas-liquid chamber Greatly, therefore, driving piston action needs the flow of pump larger, and general pump, which is difficult to meet, to be required.

It is existing a kind of if Authorization Notice No. is public in CN102287407B patent of invention for above-mentioned three kinds of applying working conditions The Double-effect reciprocating hydraulic pressure booster opened, with reference to shown in Fig. 1 of its Figure of description, utilizes chamber 3a（3b）With chamber 4a （4b）Between area of section difference, realize to 3a（3b）Input high-voltage oil liquid in chamber, control piston 6 is acted, so as to chamber Room 4a（4b）Interior fluid carries out suction, so as to realize the purpose of low discharge input, big flow output and the constancy of volume.

But, in the technical scheme, the length of whole booster is the summation of four chamber spacing block strokes, whole equipment Size is larger.

Utility model content

First purpose of the present utility model be to provide a kind of hydraulic pressure intensifier, and it passes through in hydraulic control portion Put, on the premise of output flow is not changed, to reduce the length dimension of equipment as far as possible.

Above-mentioned purpose of the present utility model technical scheme is that：A kind of hydraulic pressure intensifier, bag Cylinder barrel is included, and in cylinder barrel and by the piston that the cylinder barrel sealed separation is the first work chamber and the second work chamber, Piston rod is axially provided with along piston on the piston, the two ends of the piston rod, which are fixed in the cylinder barrel, the piston, to be set It is equipped with point for being installed with cavity, the piston rod and the cavities seals being divided into the first control chamber and the second control chamber It is provided with spacer block, the axial direction of the piston rod from outside cylinder barrel to two sections of spacing block and controls to be provided with oil ducts, spacing block point Oil duct connection first is not controlled to control chamber and second to control the runner of chamber at two ends.

By using above-mentioned technical proposal, inner chamber is set, the cavity is separated into two control chambers by spacing block in piston, When entering the high voltage control fluid pumped out in one of two control chambers, wall formation of the control fluid to the control chamber is pushed Pressure, now, the fluid of another control chamber connect with fuel tank maintains normal pressure, and high-pressure side space gradually increases, normal pressure side sky Between be gradually reduced, therefore, the control fluid of high-pressure low-flow is passed through control chamber, piston can be promoted to move, so as to realize The Volume Changes of work chamber, realize the output or compression of fluid.And in above process, because spacing block is located at piston In internal cavity, therefore, on the premise of equal output flow, the length of cylinder barrel will not become due to controlling the introducing of chamber It is long.

Preferably, the piston include with spacing block outer ring seal the inner cylinder coordinated, with inner cylinder is coaxial and and inner wall of cylinder The outer barrel of cooperation, and sealing inner cylinder and outer barrel two ends and the end cap that is slidingly sealed with piston rod, the inner cylinder and outer barrel it Between be formed with inner chamber.

By using above-mentioned technical proposal, the annular cavity formed between inner cylinder and outer barrel, compared to the piston of entity, this Plant structure lighter equivalent to portion of material, whole hydraulic pressure intensifier weight is removed on the piston of same volume.

Preferably, offer and be installed with annular groove sealing point in an annular groove, the cylinder barrel on the outer surface of piston It is divided into the separation baffles of newly-increased chamber one and newly-increased chamber two.

By using above-mentioned technical proposal, the annular groove of outer surface of piston and the setting of separation baffles so that piston and cylinder Two newly-increased chambers are formd in separation baffles both sides between cylinder inwall, the two chambers are connected with work chamber, can be increased The volume of work chamber in cylinder barrel, the space availability ratio of lifting device.

Preferably, the 4th seal of both fixing seals, spacing block and work are provided between the piston rod and cylinder barrel The second seal of both fixing seals is provided between cavity in plug.

By using above-mentioned technical proposal, the sealing between piston rod and cylinder barrel, what is directly affected is the close of work chamber Feng Xing, increased 4th seal produces fixing seal therebetween, lifts the sealing effectiveness of work chamber；Spacing block and sky Sealing influence between chamber is the sealing for controlling chamber, is slidingly sealed between the two by second seal, can be with Lift the sealing effectiveness of the control chamber in cavity.

Preferably, be provided between the piston rod and piston and be slidingly sealed both the 3rd seals, the piston with It is provided between inner wall of cylinder and is slidingly sealed both first seals.

By using above-mentioned technical proposal, what the 3rd seal can increase piston and piston rod piece is slidingly sealed effect, Adjacent control chamber room is connected with work chamber when preventing piston from being slided relative to piston rod；First seal can increase piston with Effect is slidingly sealed between cylinder barrel, the Liang Ge work chamber connection separated when piston is moved in cylinder barrel by piston is prevented.

Second purpose of the present utility model be to provide a kind of fluid pressurized induction system, and it is by using above-mentioned liquid Supercharging device is pressed, on the premise of input flow rate and output flow is not changed, to reduce the length dimension of supercharging device as far as possible, enter And reduce the overall dimensions of fluid pressurized induction system.

Above-mentioned purpose of the present utility model technical scheme is that：A kind of fluid pressurized delivery system System, includes above-mentioned any hydraulic pressure intensifier, and supply pressure oil into the first control chamber and the second control chamber room Liquid with drive piston move hydraulic system.

Preferably, the hydraulic system includes fuel tank, is arranged at the hydraulic pump of fuel-tank outlet and is connected to hydraulic pump Hydraulic fluid port is used for the reversal valve for selecting pressure oil to flow into the first control control chamber or the second control chamber.

By using above-mentioned technical proposal, due to using above-mentioned hydraulic pressure intensifier so that the high pressure of hydraulic pump output Small Flow Control fluid can control piston to move, so that realize the big flow output of the fluid in work chamber or compress, The size of whole device is built in piston due to spacing block, and on the premise of equal flow is exported, cylinder barrel will not too increase, Whole fluid pressurized induction system size has reduced compared to existing structure.

In summary, the utility model has the advantages that：

（1）For the operating mode of the gas-liquid delivery of arbitrary proportion, because the pressure-flow control form of pump is flexible, Ke Yi Gas-liquid ratio adjusts the input of control fluid at any time when changing, thus control the translational speed and reciprocating frequence of piston, improve work Make the reliability and gas-liquid compatibility of the check valve of chamber, therefore, the structure can accomplish arbitrary content product ratio in work chamber Compression and performance are not bullied the influence of liquid proportional, it is adaptable to the gas-liquid delivery operating mode in the field of oil exploitation；

（2）The control fluid of high-pressure low-flow is inputted in control chamber room, the big stream that work chamber's output can be controlled stable Fluid is measured, because the reciprocating motion speed of piston is slower, this big flow output is not by viscosity of the fluid in work chamber etc. Impact on physical properties, the manufacture difficulty reduction of cost, the self-priming effect of device is preferable；

（3）During applied to natural gas used for automobile compression field, the fluid flow that the flow of hydraulic pump is exported with work chamber has Larger difference, therefore, output flow is not limited by pump after gas compression, and cutting for piston internal cavity need to be only set as desired The area of section ratio of face area and cylinder barrel.

Brief description of the drawings

Fig. 1 is the working state schematic representation one of fluid pressurized induction system；

Fig. 2 is the working state schematic representation two of fluid pressurized induction system；

Fig. 3 is the hydraulic pressure intensifier described in embodiment 1；

Fig. 4 is the hydraulic pressure intensifier described in embodiment 2；

Fig. 5 is the hydraulic pressure intensifier described in embodiment 3；

Fig. 6 is the prior art accompanying drawing mentioned in background technology.

In figure, 1, hydraulic pump；2nd, reversal valve；3rd, hydraulic pressure intensifier；30th, the first working chamber；300th, chamber one is increased newly； 301st, the first overcurrent mouth；302nd, the second overcurrent mouth；31st, the second working chamber；310th, chamber two is increased newly；311st, the 3rd overcurrent mouth； 312nd, the 4th overcurrent mouth；32nd, the first control chamber；33rd, the second control chamber；34th, piston rod；340th, oil duct is controlled；341st, spacing block； 342nd, runner；35th, piston；350th, inner cylinder；351st, outer barrel；352nd, end cap；353rd, inner chamber；354th, separation baffles；36th, the first sealing Part；37th, second seal；38th, the 3rd seal；39th, the 4th seal；4th, stop valve；5a to 5f, check valve；6th, fuel tank；7、 Intake line；8th, output pipe.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment 1

A kind of fluid pressurized induction system, as shown in Figures 1 and 2, including hydraulic pressure intensifier 3 and for control increase The hydraulic system that pressure device 3 works, wherein：Hydraulic system includes hydraulic pump 1, reversal valve 2 and fuel tank 6 again, and hydraulic pump 1 is by oil Fluid in case 6, is pumped in supercharging device 3, and under the direction controlling effect of reversal valve 2, controls the two-way of supercharging device 3 Supercharging motion.

Specifically, with reference to Fig. 3, hydraulic pressure intensifier 3 includes outer cylinder tube, and is slidingly sealed and is arranged inside cylinder barrel Piston rod 34 is slidably connected on piston 35 in cavity, piston 35, the two ends of piston rod 34 are fixed to two end walls of cylinder barrel On.First overcurrent mouth 301, the second overcurrent mouth 302, the 3rd overcurrent mouth 311 and the 4th excessively stream are set on two end walls of cylinder barrel Mouth 312, to introduce to be conveyed or compression fluid into cylinder barrel.

Cylinder barrel internal cavities are divided into the first work chamber 30 and the second work chamber 31, to be conveyed or pressure by piston 35 The fluid of contracting completes supercharging in the two chambers or conveyed, and the fluid flowed in or out in four overcurrent mouths respectively enters the two Work chamber；Piston 35 is internally provided with a cavity, and the total length middle position of piston rod 34 is provided with a spacing block 341, point Spacer block 341 is slidingly sealed with the cavity inside piston 35（Piston 35 slides vertically relative to spacing block 341）, also, the sky Chamber is the first control control chamber 33 of chamber 32 and second by sealed separation in the both sides of spacing block 341.

Being internally provided with for piston rod 34 is axially arranged and extend the control oil duct 340 of cylinder barrel, spacing block always along its The runner 342 for controlling the control chamber 32 or second of oil duct 340 and first to control chamber 33 is communicated with 341, in this way, close to the The control fluid that the control oil duct 340 of one control chamber 32 enters enters the first control chamber by the runner 342 on spacing block 341 Room 32；And the control fluid of control oil duct 340 entrance close to the second control chamber 33 passes through the runner 342 on spacing block 341 Into the second control chamber 33, two parts control fluid is all from foregoing hydraulic system.

Due to the fluid in work chamber for it is to be conveyed or compression fluid, and in control chamber room be from hydraulic system Fluid, therefore, in order to realize sealing, prevent supercharging device 3 from being let out in occurring, the internal cavities of spacing block 341 and piston 35 it Between set second seal 37；3rd seal 38 is set between piston rod 34 and piston 35；Between piston 35 and inner wall of cylinder First seal 36 is set；And piston rod 34 is with setting the 4th seal 39 at the extended position of cylinder barrel upper piston rod 34.Above-mentioned In seal, the 4th seal 39 is fixing seal, is to be slidingly sealed at remaining position.

With reference to Fig. 1 and Fig. 3, the fluid in fuel tank 6 is pressurizeed in the work of hydraulic pump 1, and inputs liquid by reversal valve 2 Press supercharging device 3, the first working condition as shown in Figure 1, the direction that pressure oil arrow along along figure is indicated, via Fig. 3 Shown in left side control oil duct 340 flow into piston rod 34 in, and by the runner on spacing block 341 enter the second control chamber Room 33；Fluid in first control chamber 32 flows out piston rod 34 via the control oil duct 340 on the right side shown in Fig. 3, and most Eventually fuel tank 6 is flowed back to via the oil return opening of reversal valve 2.Under the flow direction control of this fluid, piston 35 is by the second control chamber The pressure effect of pressure oil in room 33 is moved to the left, the fluid in the second work chamber 31 of extruding, is realized its conveying or is pressed Contracting.

Similarly, with reference to Fig. 2 and Fig. 3, reversal valve 2 switches to the work of left position, fluid via the right side shown in Fig. 3 control Liquefaction road 340 flows into piston rod 34, and pressure oil enters in the first control chamber 32, and piston 35 moves right in the presence of pressure oil Dynamic, the fluid in the first work chamber 30 of extruding makes it compress or in the discharge of expected discharge capacity.

To be conveyed or compression fluid flows into and out fluid pressurized induction system via intake line 7 and output pipe 8, It is each on two pipelines that a stop valve 4 is set, for connecting or blocking external fluid.7 points of intake line is two-way：Connect all the way Second work chamber 31, another road connects the first work chamber 30, also, setting is open towards inside cylinder barrel respectively on two-way Check valve 5a and check valve 5c；Same, output pipe 8 is also classified into two-way：The second work chamber 31, Ling Yilu is connected all the way Connect and check valve 5b and check valve 5d of the opening towards output pipe 8 are set respectively on first work chamber 30, two-way.

Reference picture 1 and Fig. 2, provide the dynamic duty process of the fluid pressurized induction system in the present embodiment：

As shown in fig. 1, reversal valve 2 works in right position, and the pumping pressure of hydraulic pump 1 oil enters the second control chamber 33, living Plug 35 is moved to the left, and the fluid in the second work chamber 31 is squeezed, and output pipe 8 is flowed out to via check valve 5d；Now, it is single It is opening to valve 5c and connects in intake line 7, the first work chamber 30 and have fluid inflow；

As shown in Figure 2, when piston 35 moves to stroke end（Such as travel switch or the second control in touching cylinder barrel Pressure exceedes a certain threshold value in chamber 33 processed）, reversal valve 2 switches to the work of left position, and now, the pumping pressure of hydraulic pump 1 oil enters First control chamber 32, piston 35 moves right, and the fluid in the first work chamber 30 is squeezed, and is flowed out to via check valve 5b Output pipe 8；Now, check valve 5a is opening and connects in intake line 7, the second work chamber 31 and have fluid inflow.

Said process moves in circles, it is possible to achieve fluid from intake line 7 to the compression of output pipe 8 or conveying, due to What control piston 35 was acted is the pressure oil liquid of hydraulic pump 1, and the active area of pressure oil liquid is the area of spacing block 341, with Differ larger between the area of piston 35, therefore, the structure can realize the fluid conveying of high-pressure low-flow control big flow；And divide Spacer block 341 is nested in the cavity inside piston 35, therefore, in the case of output flow identical, the length of hydraulic pressure intensifier 3 Degree is small, and the size of whole fluid pressurized induction system also reduces therewith.

Embodiment 2

A kind of hydraulic pressure intensifier, as shown in Figure 4, the difference of itself and the hydraulic pressure intensifier 3 in embodiment 1 are： Piston 35 uses Split piston, and it is specifically included：The inner cylinder 350 coordinated with spacing block 341, the outer barrel coordinated with inner wall of cylinder 351, the two ends of inner cylinder 350 and outer barrel 351 are sealed by end cap 352, so, are formed between inner cylinder 350 and outer barrel 351 in one Chamber 353.The hydraulic pressure intensifier of this structure, when as the conveying of inflammable and explosive or unstable chemcial property fluid or compression When, can be by the way that appropriate gas formation protective atmosphere be filled with inner chamber 353 in advance.Also, in being between inner/outer tube Empty inner chamber 353, therefore, compared to solid piston 35, such a structure can mitigate the weight of hydraulic pressure intensifier.

Embodiment 3

A kind of hydraulic pressure intensifier, as shown in Figure 5, the difference of itself and the hydraulic pressure intensifier 3 in embodiment 1 are： The length center of piston 35 opens up a ring groove so that whole piston 35 is similar to the inwall cunning of " work " font, two ends and cylinder barrel Separation baffles 354 are set on dynamic sealing, the annular groove at middle part, and separation baffles 354 are fixed in cylinder barrel, and with the annular groove on piston 35 Outer wall formation be slidingly sealed connection, in this way, in the both sides of separation baffles 354, being formed and increasing chamber 1 and newly-increased chamber two newly 310, both aid in the first work chamber 30 and the second work chamber 31 to carry out the conveying or compression of fluid respectively.

Check valve 5e is the fluid introducing position of newly-increased chamber 1 and newly-increased chamber 2 310 when in use；Check valve 5f The position of fluid is exported to increase chamber 1 and newly-increased chamber 2 310 newly.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Claims (7)

1. a kind of hydraulic pressure intensifier, including cylinder barrel, and worked in cylinder barrel and by the cylinder barrel sealed separation for first Chamber（30）With the second work chamber（31）Piston（35）, it is characterized in that：The piston（35）On along piston（35）Axially set It is equipped with piston rod（34）, the piston rod（34）Two ends be fixed to the cylinder barrel, the piston（35）Cavity is inside provided with, institute State piston rod（34）On be installed with the cavities seals be divided into the first control chamber（32）With the second control chamber（33）'s Spacing block（341）, the piston rod（34）Axial direction on be provided with from outside cylinder barrel to spacing block（341）Two sections control oil ducts （340）, spacing block（341）Inside it is provided with and two ends is controlled into oil duct respectively（340）Connection first controls chamber（32）With the second control Chamber processed（33）Runner（342）.

2. hydraulic pressure intensifier according to claim 1, it is characterized in that：The piston（35）Including with spacing block（341） The inner cylinder that outer ring sealing coordinates（350）With inner cylinder（350）Outer barrel that is coaxial and coordinating with inner wall of cylinder（351）, and in sealing Cylinder（350）And outer barrel（351）Two ends and and piston rod（34）The end cap being slidingly sealed（352）, the inner cylinder（350）With outer barrel （351）Between be formed with inner chamber（353）.

3. hydraulic pressure intensifier according to claim 1, it is characterized in that：The piston（35）A ring is offered on outer surface It is newly-increased chamber one to be installed with the annular groove sealed separation in groove, the cylinder barrel（300）With newly-increased chamber two（310）Separation Baffle plate（354）.

4. hydraulic pressure intensifier according to claim 1, it is characterized in that：The piston rod（34）It is provided between cylinder barrel 4th seal of both fixing seals（39）, spacing block（341）With piston（35）It is provided with and is slidingly sealed between interior cavity Both second seals（37）.

5. hydraulic pressure intensifier according to claim 1, it is characterized in that：The piston rod（34）With piston（35）Between set It is equipped with and is slidingly sealed both the 3rd seals（38）, the piston（35）It is provided between inner wall of cylinder and is slidingly sealed both First seal（36）.

6. a kind of fluid pressurized induction system, it is characterized in that：Include the hydraulic booster dress described in claim 1-5 any one Put, and chamber is controlled to first（32）With the second control chamber（33）Interior confession pressure oil liquid is to drive piston（35）Mobile liquid Pressure system.

7. fluid pressurized induction system according to claim 6, it is characterized in that：The hydraulic system includes fuel tank（6）, set It is placed in fuel tank（6）The hydraulic pump of outlet（1）And it is connected to hydraulic pump（1）Hydraulic fluid port be used for select pressure oil flow into first control Control chamber（32）Or second control chamber（33）Reversal valve（2）.