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 PDF

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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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pressure
oil
hydraulic
piston
reversing valve
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CN112360827B (en
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廖娟
郑志洋
陈宇祥
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Fuzhou University
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Fuzhou University
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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
    • 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
    • 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
    • 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
    • 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
    • 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

本发明提出一种采用液压泵对柴油发电机进行增压的液压回路系统，用于对柴油发电机增压系统的液压缸H输出压力进行增幅，包括油箱K、第一换向阀A、压力继电器YJ和由动力源驱动的液压泵I；液压缸H的活塞左侧腔经油路、单向阀C与压力继电器YJ相通，还经油路、单向阀D与液压泵I的输出端相通；液压缸H的活塞右侧腔与油箱K的连接油路经过第一换向阀A；当第一换向阀A切换至增压位时，液压缸H的活塞左侧腔经油路、第一换向阀A与压力油输入端相通，活塞左侧腔油压增大，触发压力继电器YJ以启动动力源，驱动液压泵I向液压缸H的活塞左侧腔内泵入高压油，以对液压缸H的活塞左侧腔内的油压进行增幅；本发明结构紧凑，易于控制。

Figure 202011508917

The present invention proposes a hydraulic circuit system that uses a hydraulic pump to pressurize a diesel generator, which is used to amplify the output pressure of a hydraulic cylinder H of a diesel generator pressurization system, including a fuel tank K, a first reversing valve A, a pressure The relay YJ and the hydraulic pump I driven by the power source; the left cavity of the piston of the hydraulic cylinder H is connected with the pressure relay YJ through the oil circuit and the check valve C, and is also connected with the output end of the hydraulic pump I through the oil circuit and the check valve D The connection oil path between the right side cavity of the piston 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 boosting position, the left side cavity of the piston of the hydraulic cylinder H passes through the oil path , The first reversing valve A is communicated with the pressure oil input end, the oil pressure in the left cavity of the piston increases, the pressure relay YJ is triggered to start the power source, and the hydraulic pump I is driven to pump high-pressure oil into the left cavity of the piston of the hydraulic cylinder H. , to amplify the oil pressure in the left cavity of the piston of the hydraulic cylinder H; the present invention has a compact structure and is easy to control.

Figure 202011508917

Description

Hydraulic circuit system for supercharging diesel generator by adopting hydraulic pump
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)

1.一种采用液压泵对柴油发电机进行增压的液压回路系统，用于对柴油发电机增压系统的液压缸H输出压力进行增幅，其特征在于：所述液压回路系统包括油箱K、第一换向阀A、压力继电器YJ和由动力源驱动的液压泵I；所述液压缸H的活塞左侧腔经油路、单向阀C与压力继电器YJ相通，还经油路、单向阀D与液压泵I的输出端相通；液压缸H的活塞右侧腔与油箱K的连接油路经过第一换向阀A；当第一换向阀A切换至增压位时，所述液压缸H的活塞左侧腔经油路、第一换向阀A与压力油输入端相通，活塞左侧腔油压增大，触发压力继电器YJ以启动动力源，使动力源驱动液压泵I向液压缸H的活塞左侧腔内泵入高压油，以对液压缸H的活塞左侧腔内的油压进行增幅。1. a hydraulic circuit system that adopts hydraulic pump to pressurize diesel generator, is used to increase the output pressure of hydraulic cylinder H of diesel generator pressurization system, it is characterized in that: described hydraulic circuit system comprises oil tank K, The first reversing valve A, the pressure relay YJ and the hydraulic pump I driven by the power source; the left cavity of the piston of the hydraulic cylinder H is communicated with the pressure relay YJ through the oil circuit and the check valve C, and is also connected with the pressure relay YJ through the oil circuit and the The direction valve D is communicated with the output end of the hydraulic pump I; the connecting oil path between the right cavity of the piston 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 boosting position, all the The left cavity of the piston of the hydraulic cylinder H is communicated with the pressure oil input end through the oil circuit and the first reversing valve A, the oil pressure of the left cavity of the piston increases, and the pressure relay YJ is triggered to start the power source, so that the power source drives the hydraulic pump. I pump high-pressure oil into the left cavity of the piston of the hydraulic cylinder H to amplify the oil pressure in the left cavity of the piston of the hydraulic cylinder H. 2.根据权利要求1所述的一种采用液压泵对柴油发电机进行增压的液压回路系统，其特征在于：当所述液压缸H的活塞左侧腔经油路、第一换向阀A与压力油输入端相通时，活塞左侧腔油压增大并驱动活塞移动。2. A hydraulic circuit system for pressurizing a diesel generator using a hydraulic pump according to claim 1, characterized in that: when the left cavity of the piston of the hydraulic cylinder H passes through the oil circuit, the first reversing valve When A communicates with the pressure oil input end, the oil pressure in the left cavity of the piston increases and drives the piston to move. 3.根据权利要求1所述的一种采用液压泵对柴油发电机进行增压的液压回路系统，其特征在于：所述动力源为由油箱K油压驱动的液压马达II，所述液压马达II的出油端经背压阀G与油箱K相通；当压力继电器YJ被触发时，所述液压马达II的进油端经调速阀E、第二换向阀B与压力油输入端相通。3. a kind of hydraulic circuit system that adopts hydraulic pump to pressurize diesel generator according to claim 1, it is characterized in that: described power source is the hydraulic motor II driven by oil pressure of oil tank K, and described hydraulic motor The oil outlet end of II communicates with the oil tank K through the back pressure valve G; when the pressure relay YJ is triggered, the oil inlet end of the hydraulic motor II communicates with the pressure oil input end through the speed regulating valve E and the second reversing valve B . 4.根据权利要求3所述的一种采用液压泵对柴油发电机进行增压的液压回路系统，其特征在于：当压力继电器YJ被触发时，所述第二换向阀B通电，使压力油输入端输入的压力油经调速阀E进入液压马达II并驱动其工作。4. a kind of hydraulic circuit system that adopts hydraulic pump to pressurize diesel generator according to claim 3, it is characterized in that: when pressure relay YJ is triggered, described second reversing valve B is energized to make pressure The pressure oil input from the oil input end enters the hydraulic motor II through the speed regulating valve E and drives it to work. 5.根据权利要求3所述的一种采用液压泵对柴油发电机进行增压的液压回路系统，其特征在于：所述液压马达II与液压泵I的驱动轴刚性连接；所述调速阀通过调节液压马达II的输出动力来调节活塞的移动速度。5. a kind of hydraulic circuit system that adopts hydraulic pump to pressurize diesel generator according to claim 3, is characterized in that: described hydraulic motor II is rigidly connected with the drive shaft of hydraulic pump I; The moving speed of the piston is adjusted by adjusting the output power of the hydraulic motor II. 6.根据权利要求2所述的一种采用液压泵对柴油发电机进行增压的液压回路系统，其特征在于：所述单向阀D处并联有安全阀F；所述安全阀F可对液压泵I向液压缸H的活塞左侧腔输出的高压油油压进行限制；当所述液压缸H的活塞在活塞左侧腔油压向右移动时，所述活塞在油压驱动下对柴油发电机进行增压；设增压压力为P1，则当液压马达II为变量液压马达时，增压压力P1的大小液压马达II的排量q2相关。6 . The hydraulic circuit system according to claim 2 , wherein a hydraulic circuit system for pressurizing a diesel generator by a hydraulic pump is characterized in that: a safety valve F is connected in parallel at the one-way valve D; The hydraulic pump I outputs the high-pressure oil pressure to the left cavity of the piston of the hydraulic cylinder H to limit the oil pressure; when the piston of the hydraulic cylinder H moves to the right under the oil pressure in the left cavity of the piston, the piston is driven by the oil pressure. The diesel generator is supercharged; if the supercharging pressure is P1, when the hydraulic motor II is a variable hydraulic motor, the magnitude of the supercharging pressure P1 is related to the displacement q2 of the hydraulic motor II. 7.根据权利要求1所述的一种采用液压泵对柴油发电机进行增压的液压回路系统，其特征在于：所述单向阀C为液控单向阀；所述第一换向阀A为三位四通电磁换向阀；所述第二换向阀B为二位二通电磁换向阀。7. A hydraulic circuit system for pressurizing a diesel generator using a hydraulic pump according to claim 1, wherein the check valve C is a hydraulically controlled 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.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118836195A (en) * 2024-09-20 2024-10-25 宁波力劲科技有限公司 Thimble oil circuit pressure boost structure and die casting machine

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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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118836195A (en) * 2024-09-20 2024-10-25 宁波力劲科技有限公司 Thimble oil circuit pressure boost structure and die casting machine

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