CN204186569U - A kind of Variable quantity three plunger superpressure pump - Google Patents
A kind of Variable quantity three plunger superpressure pump Download PDFInfo
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- CN204186569U CN204186569U CN201420613558.2U CN201420613558U CN204186569U CN 204186569 U CN204186569 U CN 204186569U CN 201420613558 U CN201420613558 U CN 201420613558U CN 204186569 U CN204186569 U CN 204186569U
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Abstract
The utility model provides a kind of Variable quantity three plunger superpressure pump, and it is made up of bent axle, connecting rod, slide block, variable oil cylinder, high-pressure cylinder and external hydraulic power, hydraulic accumulator and air bag etc.Variable oil cylinder is single-rod piston cylinder, and cylinder body can relative to piston movement, and cylinder body and high-pressure plunger are connected, and high-pressure plunger and high pressure cylinder body plunger hole form sealed volume, coordinates one-way valve to form Variable quantity positive displacement pump.When the delivery pressure of three plunger superpressure pumps is lower than set pressure, variable cylinder block stretches out completely under pressure oil effect, the high-pressure plunger stroke be connected with variable oil cylinder reaches maximum, and high-pressure cylinder discharge capacity also reaches maximum, and now three plunger superpressure pumps run with maximum output flow; When the delivery pressure of three plunger superpressure pumps raises, then variable oil cylinder rodless cavity pressure also increases, when reaching the set pressure of sequence valve, sequence valve is opened, variable oil cylinder rodless cavity inner fluid is pressed into hydraulic accumulator through sequence valve, the cylinder body opposing pistons motion of variable oil cylinder is retracted, and the stroke of high-pressure plunger in high-pressure cylinder shortens, the corresponding reduction of discharge capacity; Otherwise the stroke of high-pressure plunger in high-pressure cylinder increases, the corresponding increase of discharge capacity, thus ensure the required flow matches of output flow and work, realize automatic constant-power variable.This Variable quantity three plunger superpressure pump compact structure, reliable operation, and also easy to adjust, cost is low.Extra high pressure charging system, high-pressure water shot streaming system, high-pressure liquid transmission and high-voltage testing system etc. can be widely used in.
Description
Technical field
The utility model relates to superpressure pump technical field, and particularly a kind of Variable quantity three plunger superpressure pump, can be used for extra high pressure charging system, high-pressure water shot streaming system, high-pressure liquid transmission and high-voltage testing system etc.
Background technique
Water-jet technology is, with high pressure or superpressure pump, ordinary water medium is pressurized to 300 ~ 420MPa, then by the nozzle of a diameter 0.10 ~ 0.25mm, with 2-3 times of velocity of sound ejection, thus form high speed, high energy, high penetrating power water bundle, i.e. high-speed water jet, can be used for material cutting or industry cleaning link, due to the advantage of its uniqueness, be used widely in fields such as machine-building, Aero-Space, automobile, military project and potteries.
High-pressure service pump or superpressure pump are the critical components of water jet system, are its heart.In water-jet technology, the superpressure pump of extensive use has two types at present: one is hydraulic driving pressurized cylinder; Another kind is three plunger superpressure pumps of Direct driver.Hydraulic driving pressurized cylinder utilizes large piston action area and little plunger active area ratio (pressure ratio) to realize supercharging, and hydraulic pressure incoming pressure is improved several times and exports high-pressure water pressure, pressure can reach 420MPa, even higher.The delivery pressure of pressurized cylinder is directly proportional to hydraulic pressure incoming pressure, therefore, by adjusting the incoming pressure of hydraulic system, just can change the delivery pressure of pressurized cylinder.Hydraulic system adopts variable displacement with constant power pump just can realize the Auto-matching of pressurized cylinder output flow and required working flow, reaches invariable power automatic variable object.For three plunger superpressure pumps of Direct driver, because its discharge capacity is only relevant with plunger stroke and diameter, structure belongs to non-variables pump, when adopting common three-phase alternating-current motor to drive, if when output flow is greater than required flow, excess traffic, from the overflow of system relief valve, produces very large power loss.So, the mode of usual employing frequency conversion and speed regulation of AC motor reaches the object of variable displacement with constant power, namely when three plunger superpressure pump output flows are greater than required working flow, system pressure raises, output power increases, frequency conversion speed-adjusting system controls motor speed to be reduced, and three plunger superpressure pump output flows decline thereupon, and vice versa.So just can ensure that the output flow of system mates with required working flow automatically.But this mode Problems existing needs to increase a set of frequency conversion speed-adjusting system, not only makes system complex, cost increases greatly, and pressure regulate exist certain delayed.
For the problems referred to above, the utility model, according to the principle of hydraulic variable displacement pump, proposes a kind of Variable quantity three plunger superpressure pump.This Variable quantity three plunger superpressure pump carries out discharge capacity adjustment by changing plunger stroke, realizes variable displacement pump function, not only compact structure, reliable operation, and easy to adjust, and cost is low.Ultra-high pressure water fluid jet system, super high pressure fluid transmission and high-voltage testing system etc. can be widely used in, there is very high use value.
Summary of the invention
The purpose of this utility model is: can not the problem of variable in order to solve now widely used three plunger superpressure pumps, provide a kind of Variable quantity three plunger superpressure pump, application Variable quantity three plunger superpressure pump can reliable, convenient, realize invariable power automatic variable efficiently.
For achieving the above object, the utility model by the following technical solutions: a kind of Variable quantity three plunger superpressure pump, it is made up of bent axle (1), connecting rod (2), slide block (3), variable oil cylinder (4) and high-pressure cylinder (7).The piston (5) of variable oil cylinder (4) is connected by piston rod and slide block (3), the high-pressure plunger (6) be connected with the cylinder body of variable oil cylinder (4) stretches in the plunger hole of high-pressure cylinder (7), form sealed volume (8) with high-pressure cylinder, coordinate one-way valve (9), (10) formation Variable quantity positive displacement pump.
onthe Variable quantity three plunger superpressure pump stated, variable oil cylinder (4) is single-rod piston cylinder, and cylinder body can move relative to piston (5), and cylinder body and high-pressure plunger (6) are connected, variable oil cylinder (4) there are two interfaces, communicate with rodless cavity (18) and rod chamber (19) respectively.
onthe Variable quantity three plunger superpressure pump stated, be equipped with hydraulic power (14) outward, hydraulic accumulator (12) and air bag (11), hydraulic accumulator (12) and safety valve (13) in parallel with hydraulic power (14), hydraulic power (14) is through one-way valve (20), one-way valve (16), sequence valve (15) is communicated with variable oil cylinder (4) rodless cavity (18), the rod chamber (19) of variable oil cylinder (4) is connected with air bag (11) through throttle valve (17), when hydraulic power (14) is for running first to variable oil cylinder (4) rodless cavity (18) and hydraulic accumulator (12) oil-filled, safety valve (13) makes hydraulic accumulator (12) maintain constant voltage, sequence valve (15) plays pressure regulation effect, air bag (11) and the relative movement of throttle valve (17) to variable oil cylinder (4) play buffer function.
Prime mover band dynamic crankshaft (1) rotary motion, connecting rod (2) is by the cylinder body of crosshead band movable slider (3), piston (5), variable oil cylinder (4) and high-pressure plunger (6) to-and-fro motion, sealed volume (8) is made periodically to increase, reduce, when sealed volume (8) increases, through one-way valve (10) water suction (or other flowing medium), when sealed volume (8) reduces, water (or other flowing medium) is extruded from one-way valve (9), three plunger alternating actions of three plunger superpressure pumps, just can discharge high-pressure water (or other flowing medium) continuously.
When the delivery pressure of three plunger superpressure pumps is lower, pressure oil in hydraulic accumulator (12) is through one-way valve (16) entering variable oil cylinder (4) rodless cavity (18), variable oil cylinder (4) cylinder body is forced to stretch out completely, fluid in variable oil cylinder (4) rodless cavity (18) is closed by sequence valve (15) and one-way valve (16), now, high-pressure plunger (6) stroke be connected with variable oil cylinder (4) reaches maximum, high-pressure cylinder discharge capacity also reaches maximum, therefore three plunger superpressure pumps run with maximum output flow, when the delivery pressure of three plunger superpressure pumps raises, then variable oil cylinder (4) rodless cavity (18) internal pressure also increases, when reaching the set pressure of sequence valve (15), sequence valve (15) is opened, the fluid of variable oil cylinder (4) rodless cavity (18) is through sequence valve (15) press-in hydraulic accumulator (12), cylinder body opposing pistons (5) motion of variable oil cylinder (4) is retracted, the stroke of high-pressure plunger (6) in high-pressure cylinder (7) shortens, the water (or other flowing medium) of discharging measures corresponding reduction, otherwise, the stroke of plunger (6) in high-pressure cylinder (7) increases, the water (or other flowing medium) of discharging measures corresponding increase, thus ensure the required flow matches of output flow and work, realize automatic constant-power variable, regulate the setting pressure of sequence valve (15), different variable characteristics can be obtained.
The utility model compared with prior art, has following remarkable advantage:
1, on conventional reciprocating formula treble ram pump basis, by structural improvement, variable cylinder apparatus is increased between slide block and high-pressure plunger, this device can the delivery pressure of perception high-pressure cylinder, make variable oil cylinder generation relative movement change the stroke of high-pressure cylinder plunger by external oil hydraulic circuit, realize variable displacement with constant power.
2, structure is simple, compact, and reliable operation is easy to adjust, and cost is low.Extra high pressure charging system, high-pressure water shot streaming system, high-pressure liquid transmission and high-voltage testing system etc. can be widely used in, there is very high use value.
Accompanying drawing explanation
Fig. 1 is the working principle schematic diagram of Variable quantity three plunger superpressure pump.
Embodiment
Shown in Figure 1, Variable quantity three plunger superpressure pump, it is made up of bent axle (1), connecting rod (2), slide block (3), variable oil cylinder (4) and high-pressure cylinder (7).The piston (5) of variable oil cylinder (4) is connected by piston rod and slide block (3), the plunger (6) be connected with variable oil cylinder (4) stretches in high-pressure cylinder (7) plunger hole, form sealed volume (8) with high-pressure cylinder, coordinate one-way valve (9), (10) formation Variable quantity positive displacement pump.
Under original state, air bag (11) compressed air suits, the pressure oil of hydraulic power (14) is oil-filled to hydraulic accumulator (12) through one-way valve (20), simultaneously through one-way valve (16) entering variable oil cylinder (4) rodless cavity (18), because the hydraulic fluid pressure of variable oil cylinder (4) rodless cavity (18) and effective active area are all greater than gas pressure and the effective active area of variable oil cylinder (4) rod chamber (19), therefore, variable oil cylinder (4) cylinder body also stretches out completely relative to piston (5) motion, when high-pressure cylinder delivery pressure is less, fluid in variable oil cylinder (4) rodless cavity (18) is closed by sequence valve (15) and one-way valve (16), now, high-pressure plunger (6) stroke be connected with variable oil cylinder (4) is maximum.
Prime mover band dynamic crankshaft (1) rotary motion, connecting rod (2) is by crosshead band movable slider (3), piston (5), the cylinder body of variable oil cylinder (4) and high-pressure plunger (6) to-and-fro motion, sealed volume (8) is periodically increased, reduce, when sealed volume (8) increases, through one-way valve (10) water suction (or other flowing medium), when sealed volume (8) reduces, water (or other flowing medium) is extruded from one-way valve (9), three plunger alternating actions of three plunger superpressure pumps, just high-pressure water (or other flowing medium) can be discharged continuously, now, high-pressure plunger (6) stroke be connected with variable oil cylinder (4) reaches maximum, high-pressure cylinder discharge capacity also reaches maximum, therefore three plunger superpressure pumps run with maximum output flow.
When the delivery pressure of three plunger superpressure pumps raises, then variable oil cylinder (4) rodless cavity (18) internal pressure also increases, when reaching the set pressure of sequence valve (15), sequence valve (15) is opened, the fluid of variable oil cylinder (4) rodless cavity (18) is through sequence valve (15) press-in hydraulic accumulator (12), cylinder body opposing pistons (5) motion of variable oil cylinder (4) is retracted, the stroke of high-pressure plunger (6) in high-pressure cylinder (7) shortens, the water (or other flowing medium) of discharging measures corresponding reduction, otherwise, the stroke of plunger (6) in high-pressure cylinder (7) increases, the water (or other flowing medium) of discharging measures corresponding increase, thus ensure the required flow matches of output flow and work, realize automatic constant-power variable, regulate the setting pressure of sequence valve (15), different variable characteristics can be obtained.
When hydraulic power (14) only need run first to hydraulic accumulator (12) and variable oil cylinder (4) rodless cavity (18) oil-filled, in later running variable oil cylinder relative movement needed for pressure oil then provided by hydraulic accumulator (12), safety valve (13) makes hydraulic accumulator (12) maintain constant voltage, sequence valve (15) plays pressure regulation effect, and air bag (11) and the relative movement of throttle valve (17) to variable oil cylinder (4) play buffer function.
Above-described embodiment is described further foregoing of the present utility model, but this should be interpreted as that the scope of the above-mentioned theme of the utility model is only limitted to above-described embodiment.All technology realized based on foregoing all belong to scope of the present utility model.
Claims (3)
1. a Variable quantity three plunger superpressure pump, it is made up of bent axle (1), connecting rod (2), slide block (3), variable oil cylinder (4) and high-pressure cylinder (7), the piston (5) of variable oil cylinder (4) is connected by piston rod and slide block (3), the high-pressure plunger (6) be connected with the cylinder body of variable oil cylinder (4) stretches in high-pressure cylinder (7) plunger hole, form sealed volume (8) with high-pressure cylinder, coordinate one-way valve (9), (10) formation Variable quantity positive displacement pump.
2. Variable quantity three plunger superpressure pump as claimed in claim 1, it is characterized in that: variable oil cylinder (4) is single-rod piston cylinder, cylinder body can move relative to piston (5), variable oil cylinder (4) has two interfaces, communicates respectively with rodless cavity (18) and rod chamber (19).
3. Variable quantity three plunger superpressure pump as claimed in claim 1, it is characterized in that: be equipped with hydraulic power (14), hydraulic accumulator (12) and air bag (11) outward, hydraulic accumulator (12) and safety valve (13) in parallel with hydraulic power (14), hydraulic power (14) is communicated with variable oil cylinder (4) rodless cavity (18) through one-way valve (20), one-way valve (16), sequence valve (15), and the rod chamber (19) of variable oil cylinder (4) is connected with air bag (11) through throttle valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420613558.2U CN204186569U (en) | 2014-10-23 | 2014-10-23 | A kind of Variable quantity three plunger superpressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420613558.2U CN204186569U (en) | 2014-10-23 | 2014-10-23 | A kind of Variable quantity three plunger superpressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186569U true CN204186569U (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420613558.2U Expired - Fee Related CN204186569U (en) | 2014-10-23 | 2014-10-23 | A kind of Variable quantity three plunger superpressure pump |
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| CN (1) | CN204186569U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358681A (en) * | 2014-10-23 | 2015-02-18 | 西华大学 | Variable displacement triple plunger super-pressure pump |
| CN109708838A (en) * | 2019-01-30 | 2019-05-03 | 徐州市全球通精密钢管有限公司 | A kind of crank connecting link double-cylinder hydraulic hf and hv pulse impact test apparatus and method |
-
2014
- 2014-10-23 CN CN201420613558.2U patent/CN204186569U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358681A (en) * | 2014-10-23 | 2015-02-18 | 西华大学 | Variable displacement triple plunger super-pressure pump |
| CN109708838A (en) * | 2019-01-30 | 2019-05-03 | 徐州市全球通精密钢管有限公司 | A kind of crank connecting link double-cylinder hydraulic hf and hv pulse impact test apparatus and method |
| CN109708838B (en) * | 2019-01-30 | 2023-09-22 | 徐州市全球通精密钢管有限公司 | Crank connecting rod double-cylinder hydraulic high-frequency high-voltage pulse impact test device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |