CN112360827A - Hydraulic circuit system for supercharging diesel generator by adopting hydraulic pump - Google Patents
Hydraulic circuit system for supercharging diesel generator by adopting hydraulic pump Download PDFInfo
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- CN112360827A CN112360827A CN202011508917.4A CN202011508917A CN112360827A CN 112360827 A CN112360827 A CN 112360827A CN 202011508917 A CN202011508917 A CN 202011508917A CN 112360827 A CN112360827 A CN 112360827A
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- 230000001960 triggered effect Effects 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a hydraulic loop system for boosting a diesel generator by adopting a hydraulic pump, which is used for amplifying the output pressure of a hydraulic cylinder H of the diesel generator boosting system and comprises an oil tank K, a first reversing valve A, a pressure relay YJ and a hydraulic pump I driven by a power source; a piston left side cavity of the hydraulic cylinder H is communicated with the pressure relay YJ through an oil way and a one-way valve C, and is also communicated with the output end of the hydraulic pump I through an oil way and a one-way valve D; a connecting oil path between a piston right side cavity of the hydraulic cylinder H and the oil tank K passes through the first reversing valve A; when the first reversing valve A is switched to a pressurization position, a piston left side cavity of the hydraulic cylinder H is communicated with a pressure oil input end through an oil way and the first reversing valve A, the oil pressure of the piston left side cavity is increased, a pressure relay YJ is triggered to start a power source, and the hydraulic pump I is driven to pump high-pressure oil into the piston left side cavity of the hydraulic cylinder H so as to amplify the oil pressure in the piston left side cavity of the hydraulic cylinder H; the invention has compact structure and easy control.
Description
Technical Field
The invention relates to the field of machinery, in particular to a hydraulic loop system for supercharging a diesel generator by adopting a hydraulic pump.
Background
The purpose of diesel generator supercharging is to improve the intake pressure, improve the intake density of the diesel engine under the condition that the working volume of a cylinder is not changed, increase the intake air quantity in the cylinder, and improve the output power of the diesel engine by burning more fuel under the condition that the mechanical strength allows.
Compared with non-supercharged diesel engines, supercharged diesel engines can generally increase power by about 60%, and the fuel consumption can be reduced by about 5.5%, and the discharged waste gas can be purified. How to boost pressure is a technical problem, and the technical problem cannot be broken through so far.
The traditional diesel generator supercharging mode has four types: 1) a mechanical supercharging system; 2) a gas wave pressurization system; 3) an exhaust gas turbocharging system; 4) a compound supercharging system.
The traditional pressurization mode has a plurality of defects:
1) because the whole device of the mechanical supercharging system is arranged in the rotating shaft of the engine, partial power is consumed, and the supercharging effect is not high.
2) The whole device of the gas wave supercharging system is heavy and difficult to use in a small-sized diesel generator.
3) The exhaust gas turbocharging system adopts the supercharger to supercharge, and because the rotating speed of the rotor of the supercharger is very high during the work, the supercharger needs to be cooled by a special cooling device, so that the whole price is high.
Disclosure of Invention
The invention provides a hydraulic loop system for boosting a diesel generator by adopting a hydraulic pump, which has a compact structure and is easy to control.
The invention adopts the following technical scheme.
A hydraulic loop system for supercharging a diesel generator by adopting a hydraulic pump is used for amplifying the output pressure of a hydraulic cylinder H of the diesel generator supercharging system, and comprises an oil tank K, a first reversing valve A, a pressure relay YJ and a hydraulic pump I driven by a power source; a piston left side cavity of the hydraulic cylinder H is communicated with the pressure relay YJ through an oil way and a one-way valve C, and is also communicated with the output end of the hydraulic pump I through an oil way and a one-way valve D; a connecting oil path between a piston right side cavity of the hydraulic cylinder H and the oil tank K passes through the first reversing valve A; when the first reversing valve A is switched to the pressurization position, the piston left side cavity of the hydraulic cylinder H is communicated with the pressure oil input end through the oil way and the first reversing valve A, the oil pressure of the piston left side cavity is increased, the pressure relay YJ is triggered to start the power source, and the power source drives the hydraulic pump I to pump high-pressure oil into the piston left side cavity of the hydraulic cylinder H so as to amplify the oil pressure in the piston left side cavity of the hydraulic cylinder H.
When a piston left side cavity of the hydraulic cylinder H is communicated with a pressure oil input end through an oil way and the first reversing valve A, the oil pressure of the piston left side cavity is increased and the piston is driven to move.
The power source is a hydraulic motor II driven by the oil pressure of an oil tank K, and the oil outlet end of the hydraulic motor II is communicated with the oil tank K through a backpressure valve G; when the pressure relay YJ is triggered, the oil inlet end of the hydraulic motor II is communicated with the pressure oil input end through the speed regulating valve E and the second reversing valve B.
When the pressure relay YJ is triggered, the second reversing valve B is electrified, so that pressure oil input from the pressure oil input end enters the hydraulic motor II through the speed regulating valve E and drives the hydraulic motor II to work.
The hydraulic motor II is rigidly connected with a driving shaft of the hydraulic pump I; the speed regulating valve regulates the moving speed of the piston by regulating the output power of the hydraulic motor II.
The safety valve F is connected in parallel with the one-way valve D; the safety valve F can limit the oil pressure of high-pressure oil output from the hydraulic pump I to the piston left side cavity of the hydraulic cylinder H; when the piston of the hydraulic cylinder H moves rightwards under the oil pressure of the piston left side cavity, the piston is driven by the oil pressure to pressurize the diesel generator; assuming that the boost pressure is P1, when the hydraulic motor II is a variable displacement hydraulic motor, the magnitude of the boost pressure P1 is related to the displacement q2 of the hydraulic motor II.
The check valve C is a hydraulic control check valve; the first reversing valve A is a three-position four-way electromagnetic reversing valve; the second reversing valve B is a two-position two-way electromagnetic reversing valve.
The pressurizing mode of pressurizing the diesel generator by adopting the hydraulic loop system formed by combining the hydraulic pump and the hydraulic motor has the advantages that:
1) the oil pressure is increased by adopting the hydraulic pump, so that the air inlet density of the cylinder is improved, the air inlet amount is increased, and the output power of the diesel engine is higher;
2) the hydraulic pump is driven by a hydraulic motor instead of a motor, so that the use of a prime mover is reduced, the structural system of a hydraulic loop system is compact, the size of the diesel generator is small, and the application field is wider;
3) the supercharging pressure can be changed directly by changing the displacement of the hydraulic motor, and the method is simple and quick;
4) the whole supercharged hydraulic circuit system is compact in structure, the related hydraulic components are fewer, and the cost of the diesel generator can be reduced.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic of the present invention;
in the figure: 1. the hydraulic control system comprises first reversing valves A, 2, second reversing valves B, 3, check valves C, 4, check valves D, 5, check valves G, 6, speed regulating valves E, 7, safety valves F, 8, hydraulic cylinders H, 9, oil tanks K, 10, pressure relays YJ, 11, hydraulic pumps I, 12, hydraulic motors II, 13, pistons and 14-pressure oil input ends.
Detailed Description
As shown in the figure, a hydraulic circuit system for supercharging a diesel generator by using a hydraulic pump is used for amplifying the output pressure of a hydraulic cylinder H8 of the diesel generator supercharging system, and comprises an oil tank K, a first reversing valve A1, a pressure relay YJ and a hydraulic pump I driven by a power source; a piston left side cavity of the hydraulic cylinder H is communicated with the pressure relay YJ through an oil way and a check valve C3, and is also communicated with the output end of the hydraulic pump I11 through the oil way and a check valve D4; a connecting oil path between a piston right side cavity of the hydraulic cylinder H and an oil tank K9 passes through a first reversing valve A; when the first reversing valve A is switched to the pressurization position, the cavity on the left side of the piston of the hydraulic cylinder H is communicated with the pressure oil input end 14 through the oil way and the first reversing valve A, the oil pressure of the cavity on the left side of the piston is increased, the pressure relay YJ10 is triggered to start the power source, and the power source drives the hydraulic pump I to pump high-pressure oil into the cavity on the left side of the piston of the hydraulic cylinder H so as to amplify the oil pressure in the cavity on the left side of the piston of the hydraulic cylinder H.
When the left piston cavity of the hydraulic cylinder H is communicated with the pressure oil input end through the oil way and the first reversing valve A, the oil pressure of the left piston cavity is increased and the piston 13 is driven to move.
The power source is a hydraulic motor II12 driven by the oil pressure of an oil tank K, and the oil outlet end of the hydraulic motor II is communicated with the oil tank K through a backpressure valve G; when the pressure relay YJ is triggered, the oil inlet end of the hydraulic motor II is communicated with the pressure oil input end through the speed regulating valve E6 and the second reversing valve B2.
When the pressure relay YJ is triggered, the second reversing valve B is electrified, so that pressure oil input from the pressure oil input end enters the hydraulic motor II through the speed regulating valve E and drives the hydraulic motor II to work.
The hydraulic motor II is rigidly connected with a driving shaft of the hydraulic pump I; the speed regulating valve regulates the moving speed of the piston by regulating the output power of the hydraulic motor II.
A safety valve F7 is connected in parallel at the one-way valve D; the safety valve F can limit the oil pressure of high-pressure oil output from the hydraulic pump I to the piston left side cavity of the hydraulic cylinder H; when the piston of the hydraulic cylinder H moves rightwards under the oil pressure of the piston left side cavity, the piston is driven by the oil pressure to pressurize the diesel generator; assuming that the boost pressure is P1, when the hydraulic motor II is a variable displacement hydraulic motor, the magnitude of the boost pressure P1 is related to the displacement q2 of the hydraulic motor II.
The check valve C is a hydraulic control check valve; the first reversing valve A is a three-position four-way electromagnetic reversing valve; the second reversing valve B is a two-position two-way electromagnetic reversing valve.
In this example, when the first reversing valve a is switched to the left position, the first reversing valve a is switched to the pressurization position;
in this example, a check valve G is provided at the input end of the tank.
In this example, the hydraulic components are connected by oil pipes.
In this example, if the hydraulic pressure supplied by the hydraulic motor II is P0, the output pressure of the hydraulic pump I is P1= a P0, where a is the ratio of the displacement of the hydraulic motor II to the displacement of the hydraulic pump I per revolution, i.e., a = q2/q1. with a =2, P1=2P0, and the oil pressure can be doubled.
Claims (7)
1. The utility model provides an adopt hydraulic pump to carry out the hydraulic circuit system of pressure boost to diesel generator for pneumatic cylinder H output pressure to diesel generator pressure boost system carries out the amplification, its characterized in that: the hydraulic loop system comprises an oil tank K, a first reversing valve A, a pressure relay YJ and a hydraulic pump I driven by a power source; a piston left side cavity of the hydraulic cylinder H is communicated with the pressure relay YJ through an oil way and a one-way valve C, and is also communicated with the output end of the hydraulic pump I through an oil way and a one-way valve D; a connecting oil path between a piston right side cavity of the hydraulic cylinder H and the oil tank K passes through the first reversing valve A; when the first reversing valve A is switched to the pressurization position, the piston left side cavity of the hydraulic cylinder H is communicated with the pressure oil input end through the oil way and the first reversing valve A, the oil pressure of the piston left side cavity is increased, the pressure relay YJ is triggered to start the power source, and the power source drives the hydraulic pump I to pump high-pressure oil into the piston left side cavity of the hydraulic cylinder H so as to amplify the oil pressure in the piston left side cavity of the hydraulic cylinder H.
2. The hydraulic circuit system for boosting a diesel generator with a hydraulic pump according to claim 1, wherein: when a piston left side cavity of the hydraulic cylinder H is communicated with a pressure oil input end through an oil way and the first reversing valve A, the oil pressure of the piston left side cavity is increased and the piston is driven to move.
3. The hydraulic circuit system for boosting a diesel generator with a hydraulic pump according to claim 1, wherein: the power source is a hydraulic motor II driven by the oil pressure of an oil tank K, and the oil outlet end of the hydraulic motor II is communicated with the oil tank K through a backpressure valve G; when the pressure relay YJ is triggered, the oil inlet end of the hydraulic motor II is communicated with the pressure oil input end through the speed regulating valve E and the second reversing valve B.
4. The hydraulic circuit system for boosting a diesel generator with a hydraulic pump according to claim 3, wherein: when the pressure relay YJ is triggered, the second reversing valve B is electrified, so that pressure oil input from the pressure oil input end enters the hydraulic motor II through the speed regulating valve E and drives the hydraulic motor II to work.
5. The hydraulic circuit system for boosting a diesel generator with a hydraulic pump according to claim 3, wherein: the hydraulic motor II is rigidly connected with a driving shaft of the hydraulic pump I; the speed regulating valve regulates the moving speed of the piston by regulating the output power of the hydraulic motor II.
6. The hydraulic circuit system for boosting a diesel generator with a hydraulic pump according to claim 2, wherein: the safety valve F is connected in parallel with the one-way valve D; the safety valve F can limit the oil pressure of high-pressure oil output from the hydraulic pump I to the piston left side cavity of the hydraulic cylinder H; when the piston of the hydraulic cylinder H moves rightwards under the oil pressure of the piston left side cavity, the piston is driven by the oil pressure to pressurize the diesel generator; assuming that the boost pressure is P1, when the hydraulic motor II is a variable displacement hydraulic motor, the magnitude of the boost pressure P1 is related to the displacement q2 of the hydraulic motor II.
7. The hydraulic circuit system for boosting a diesel generator with a hydraulic pump according to claim 1, wherein: the check valve C is a hydraulic control check valve; the first reversing valve A is a three-position four-way electromagnetic reversing valve; the second reversing valve B is a two-position two-way electromagnetic reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508917.4A CN112360827B (en) | 2020-12-18 | 2020-12-18 | Hydraulic loop system for boosting diesel generator by adopting hydraulic pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508917.4A CN112360827B (en) | 2020-12-18 | 2020-12-18 | Hydraulic loop system for boosting diesel generator by adopting hydraulic pump |
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| Publication Number | Publication Date |
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| CN112360827A true CN112360827A (en) | 2021-02-12 |
| CN112360827B CN112360827B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011508917.4A Active CN112360827B (en) | 2020-12-18 | 2020-12-18 | Hydraulic loop system for boosting diesel generator by adopting hydraulic pump |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383769A (en) * | 2011-10-14 | 2012-03-21 | 上海大学 | Power compensation type hydraulic pressurizing water injection system |
| CN204054552U (en) * | 2014-08-27 | 2014-12-31 | 山东胜岳精密机械有限公司 | Two plate hydraulic injection molding machine normal pressures, supercharging, high-voltage lock mould loop |
| CN106150850A (en) * | 2016-09-27 | 2016-11-23 | 桂林航天工业学院 | A kind of compound hydraulic drive type wave energy generating set |
| CN214092493U (en) * | 2020-12-18 | 2021-08-31 | 福州大学 | Hydraulic circuit system for supercharging diesel generator by adopting hydraulic pump |
-
2020
- 2020-12-18 CN CN202011508917.4A patent/CN112360827B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383769A (en) * | 2011-10-14 | 2012-03-21 | 上海大学 | Power compensation type hydraulic pressurizing water injection system |
| CN204054552U (en) * | 2014-08-27 | 2014-12-31 | 山东胜岳精密机械有限公司 | Two plate hydraulic injection molding machine normal pressures, supercharging, high-voltage lock mould loop |
| CN106150850A (en) * | 2016-09-27 | 2016-11-23 | 桂林航天工业学院 | A kind of compound hydraulic drive type wave energy generating set |
| CN214092493U (en) * | 2020-12-18 | 2021-08-31 | 福州大学 | Hydraulic circuit system for supercharging diesel generator by adopting hydraulic pump |
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| Publication number | Publication date |
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| CN112360827B (en) | 2024-06-14 |
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