CN110332155A - A kind of hydraulic loading system - Google Patents
A kind of hydraulic loading system Download PDFInfo
- Publication number
- CN110332155A CN110332155A CN201910657218.7A CN201910657218A CN110332155A CN 110332155 A CN110332155 A CN 110332155A CN 201910657218 A CN201910657218 A CN 201910657218A CN 110332155 A CN110332155 A CN 110332155A
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- CN
- China
- Prior art keywords
- explosion
- proof
- pressure control
- load
- proportional pressure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- 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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The application belongs to aero-engine test technology field, is related to a kind of hydraulic loading system.The hydraulic system includes intake line, executive device and return line, the first explosion-proof proportional pressure control valve is provided on return line, for controlling return pressure, the first explosion-proof proportional pressure control valve both ends are parallel at least one and adjust pipeline, each regulation pipe road is provided with the second explosion-proof proportional pressure control valve and the first explosion-proof solenoid valve, and the second explosion-proof proportional pressure control valve is connected with first explosion-proof solenoid valve.The application an explosion-proof proportional pressure control valve in parallel and explosion-proof solenoid valve at the explosion-proof proportional pressure control valve of existing system outlet of plunger pump pipeline first, adjust the aperture of two proportional pressure control valves, it can correspond to the pressure requirements of given tensile load load with dynamic load load, pass through the opening and closing of control solenoid valve later, switching between optimized integration load and dynamic load, it realizes the load of dynamic load transient state, unloading, meets test load and require.
Description
Technical field
The application belongs to aero-engine test technology field, in particular to a kind of hydraulic loading system.
Background technique
Currently, using hydraulic loading device in the accessory drive laboratory duration running carried out according to national military standard
Fly attached output shaft instead of winged random casket for accessory drive gearbox to be loaded.
Exerciser hydraulic loading system schematic diagram as shown in Figure 1, including intake line, executive device and return line, institute
Intake line is stated by oil pump unit 4 to executive device fuel feeding, the output end connection of the executive device flies attached output shaft, is used for
Oil liquid pressure is converted into mechanical energy, with drive it is described fly the rotation of attached output shaft, it is explosion-proof to be provided with first on the return line
Proportional pressure control valve 23, for controlling return pressure.
Loaded load needed for testpieces is divided into given tensile load and dynamic load two parts: given tensile load is testpieces a certain
Steady load to be loaded is needed under stabilized (steady-state) speed state, given tensile load value is different under different rotating speeds state；Dynamic load is in base
The square wave load for continuously additionally applying several groups of 4s~6s on the basis of plinth load, simulates aircraft generator and hydraulic pump works shape
State, as shown in Fig. 2, the size of the lower value of usually dynamic load is suitable with given tensile load.
Accessory drive gearbox flies attached output shaft and drives plunger pump to be loaded by gear-box.By plunger pump swash plate angle when test
It is adjusted to a certain stationary state (usually maximum functional angle keeps pumpage maximum), plunger pump aerial drainage pressure is adjusted to be greater than load
Pressure, plunger pumpage passes through the first explosion-proof proportional pressure control valve 23 on pilot plunger pump reflux pipeline with rotation speed change at this time
Aperture come pilot plunger pump 12 outlet pressures, to carry out loaded load adjusting.First explosion-proof proportional pressure control valve 23 can be into
100 grades of aperture regulations of row, therefore fly attached output shaft load power and can realize relatively to fine-tune.
Although existing hydraulic system can satisfy testpieces given tensile load, load is required, and can not be fully met dynamic and be carried
Lotus load requires.When carrying out dynamic load load operation, continuous button pilot plunger pump discharge pressure is needed, load operation needs
Certain time (usual 10s or so) is wanted, although loaded load can satisfy dynamic load numerical requirements, load and unloading speed
Degree is not able to satisfy dynamic load instantaneous herk requirement.
It needs to provide a kind of hydraulic loading system, both can satisfy testpieces given tensile load and dynamic load loaded value is any
The requirement of adjusting, and can satisfy the test requirements document of the load of dynamic load moment, unloading.
Summary of the invention
To solve the above problems, this application provides a kind of hydraulic loading system, including intake line, executive device and return
Flow tube road, by oil pump unit to executive device fuel feeding, the output end connection of the executive device flies attached defeated the intake line
Shaft, for oil liquid pressure to be converted to mechanical energy, with drive it is described fly the rotation of attached output shaft, be provided on the return line
First explosion-proof proportional pressure control valve, for controlling return pressure, wherein the first explosion-proof proportional pressure control valve both ends are parallel at least
One adjusting pipeline, each regulation pipe road is provided with the second explosion-proof proportional pressure control valve and the first explosion-proof solenoid valve, described
Second explosion-proof proportional pressure control valve is connected with first explosion-proof solenoid valve.
Preferably, oil filter is provided on the intake line.
Preferably, it is provided with butterfly valve on the intake line, and is set before the butterfly valve on the intake line
It is equipped with the return pipe for connecting the return line.
Preferably, multiple explosion-proof pressure sensors are provided on the intake line and return line.
Preferably, the intake line and return line are all connected with fuel tank, are provided with temperature sensor in the fuel tank.
Preferably, accumulator is provided on the return line.
Preferably, cooler is provided on the return line.
Preferably, it is provided with the second return line before the cooler, is provided on second return line excessive
Flow valve.
The application explosion-proof ratio in parallel at the explosion-proof proportional pressure control valve of existing system outlet of plunger pump pipeline first is excessive
Valve and an explosion-proof solenoid valve are flowed, the aperture of two proportional pressure control valves is adjusted, given tensile load load is can correspond to and is carried with dynamic
The pressure requirements of lotus load, later by the opening and closing of control solenoid valve, the switching between optimized integration load and dynamic load is real
Existing dynamic load transient state load, unloading meet test load and require.
Detailed description of the invention
Fig. 1 is hydraulic loading system connection schematic diagram in the prior art.
Fig. 2 is to fly attached output shaft dynamic load schematic diagram.
Fig. 3 is the connection schematic diagram of the application hydraulic loading system.
Wherein, 1- fuel tank, 2- compensation hose, 3- butterfly valve, 4- oil pump unit, 5- compensate hose, 6- vibration-proof pressure gauge, and 7- stops
Returning valve, 8- oil filter, 9- butterfly valve, 10- ball valve, 11- damping larynx, 12- plunger pump, 13- flies attached output shaft, 14- high-pressure hose,
15- explosion-proof pressure sensor, 16- ball valve, 17- accumulator, 18- vibration-proof pressure gauge, 19- check valve, 20- explosion-proof electromagnetic overflow
Valve, 21- oil filter, 22- explosion-proof pressure sensor, 23- the first explosion-proof electromagnetic overflow valve, 24- butterfly valve, the explosion-proof turbine flow of 25-
Meter, 26- temperature sensor, 27- cooler, 28- explosion-proof pressure sensor, 29- explosion-proof solenoid valve, 30- ball valve, 31- overflow valve,
32- liquidometer controller, the explosion-proof proportional pressure control valve of 33- second, the first explosion-proof solenoid valve of 34-.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction with the application embodiment
In attached drawing, the technical solution in the application embodiment is further described in more detail.In the accompanying drawings, identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.Described embodiment is
A part of embodiment of the application, rather than whole embodiments.Embodiment below with reference to attached drawing description is to show
Example property, it is intended to for explaining the application, and should not be understood as the limitation to the application.Based on the embodiment in the application,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Apply for the range of protection.Presently filed embodiment is described in detail with reference to the accompanying drawing.
This application provides a kind of hydraulic loading systems, as shown in figure 3, including intake line, executive device and return pipe
Road, for the intake line by oil pump unit to executive device fuel feeding, the output end connection of the executive device flies attached output shaft,
For oil liquid pressure to be converted to mechanical energy, with drive it is described fly the rotation of attached output shaft, be provided with first on the return line
Explosion-proof proportional pressure control valve, for controlling return pressure, first explosion-proof 23 both ends of proportional pressure control valve are parallel at least one tune
Pipeline is saved, each regulation pipe road is provided with the second explosion-proof proportional pressure control valve 33 and the first explosion-proof solenoid valve 34, described
Second explosion-proof proportional pressure control valve 33 is connected with first explosion-proof solenoid valve 34.
With reference to Fig. 3, hydraulic loading system is briefly described, includes oil pump unit 4 on intake line, is used for from fuel tank
1 oil pumping, the compensated hose 2 of oil liquid and butterfly valve 3, into oil pump unit 4, compensated hose 5 and check-valves 7 enter oil filter later
8, vibration-proof pressure gauge 6 is parallel in oil pump unit 4, oil liquid enters through butterfly valve 9, damping larynx 11 after the filtering of oil filter 8 and executes dress
It sets, executive device for example can be plunger pump 12, and executive device can also include the devices such as shaft coupling, bell-jar, shock ring, hold
Luggage is set and is flown attached output shaft 13 and connects.
In the input port of butterfly valve 9, return line is also connected to by return pipe, the output end of butterfly valve 9 also passes through unidirectionally
Valve is connected to the output end of plunger pump 12, is return line after 12 output end of plunger pump, successively by high-pressure hose 14, unidirectional
Oil filter 21 is connected after valve 19,12 output end of plunger pump is additionally provided with explosion-proof pressure sensor 15, ball valve 16, accumulator 17 and resistance to
Shake pressure gauge 18.
Explosion-proof pressure sensor 22 and the first explosion-proof electromagnetic overflow valve 23 are set on the oil return line after oil filter 21, the
Explosion-proof electromagnetic overflow valve 20 is parallel on one explosion-proof electromagnetic overflow valve 23.
In the application, at the first explosion-proof electromagnetic overflow valve 23 can a plurality of adjusting pipeline in parallel, Fig. 3 gives parallel connection one
Item adjusts the case where pipeline, and regulation pipe road is provided with the second explosion-proof proportional pressure control valve 33 and the first explosion-proof solenoid valve 34, institute
The second explosion-proof proportional pressure control valve 33 is stated to connect with first explosion-proof solenoid valve 34.
It should be noted that in parallel the at the first explosion-proof proportional pressure control valve 23 of existing system outlet of plunger pump pipeline
After two explosion-proof proportional pressure control valves 33 and the first explosion-proof solenoid valve 34, the working principle of system are as follows:
1. closing the first explosion-proof solenoid valve 34 under some test speed, the nozzle of the first explosion-proof proportional pressure control valve 23 is adjusted
Aperture makes to load given tensile load+dynamic load value that power is equal under the revolving speed, the i.e. high level of the square wave of Fig. 2；
2. opening the first explosion-proof solenoid valve 34, at this time the second explosion-proof proportional pressure control valve 33 and the first explosion-proof proportional pressure control valve 23
It is used as nozzle simultaneously, nozzle area becomes larger, outlet of plunger pump pressure reduction, and loaded load reduces.The second explosion-proof ratio is adjusted to overflow
33 aperture of valve is flowed, makes to load the given tensile load value that power is equal under the revolving speed, the i.e. low value of the square wave of Fig. 2；
3. being opened under the revolving speed after completing the first explosion-proof proportional pressure control valve 23 and the second explosion-proof adjusting of proportional pressure control valve 33
First explosion-proof solenoid valve, 34 state carries out given tensile load load, only needs to close first when needing to carry out dynamic load load explosion-proof
Instantaneous herk can be realized in solenoid valve 34；
4. repeating above step after replacement rotary regimes readjusts given tensile load+dynamic load loaded value and given tensile load
Loaded value.
The hydraulic system can also be extended when needing to apply multiple groups dynamic load under some trystate, every parallel connection
One group of explosion-proof proportional pressure control valve valve and explosion-proof solenoid valve can adjust out a dynamic load value more.
It also successively include butterfly valve 24, explosion-proof turbine flowmeter 25 after the first explosion-proof electromagnetic overflow valve 23 on return line
And temperature sensor 26, return line is divided into two branches later, flows back to fuel tank 1, another way after cooler 27 is cooling all the way
For overflow branch, overflow branch includes ball valve 30 and overflow valve 31, and cooling branch includes cooler 27, explosion-proof pressure sensor 28
And explosion-proof solenoid valve 29.
Temperature sensor 26 and liquidometer controller 32 are provided in herein described fuel tank 1.
Compared with existing hydraulic system, the present invention has the following advantages:
1. the load of dynamic load transient state, unloading can be realized, fully meets test load and require；
2. loaded value can arbitrarily be adjusted within the scope of system capability, can try out in different tests part and different tests state；
3. can be transformed on the basis of existing system, system is stable and cost is relatively low.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (8)
1. a kind of hydraulic loading system, including intake line, executive device and return line, the intake line passes through oil pump machine
Group (4) is to executive device fuel feeding, and the output end connection of the executive device flies attached output shaft, for oil liquid pressure to be converted to machine
Tool energy, with drive it is described fly the rotation of attached output shaft, be provided with the first explosion-proof proportional pressure control valve (23) on the return line, be used for
Control return pressure, it is characterised in that:
First explosion-proof proportional pressure control valve (23) both ends are parallel at least one and adjust pipeline, and each regulation pipe road is set
It is equipped with the second explosion-proof proportional pressure control valve (33) and the first explosion-proof solenoid valve (34), the second explosion-proof proportional pressure control valve (33) and institute
State the first explosion-proof solenoid valve (34) series connection.
2. hydraulic loading system as described in claim 1, which is characterized in that be provided with oil filter (8) on the intake line.
3. hydraulic loading system as described in claim 1, which is characterized in that it is provided on the intake line butterfly valve (9), and
And the return pipe for connecting the return line is provided on the intake line before the butterfly valve (9).
4. hydraulic loading system as described in claim 1, which is characterized in that be provided on the intake line and return line
Multiple explosion-proof pressure sensors.
5. hydraulic loading system as claimed in claim 4, which is characterized in that the intake line and return line are all connected with oil
Case (1) is provided with temperature sensor (26) in the fuel tank.
6. hydraulic loading system as claimed in claim 4, which is characterized in that be provided with accumulator on the return line
(17)。
7. hydraulic loading system as described in claim 1, which is characterized in that be provided with cooler on the return line
(27)。
8. hydraulic loading system as claimed in claim 7, which is characterized in that be provided with second time before the cooler (27)
Flow tube road is provided with overflow valve (31) on second return line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657218.7A CN110332155B (en) | 2019-07-19 | 2019-07-19 | Hydraulic loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657218.7A CN110332155B (en) | 2019-07-19 | 2019-07-19 | Hydraulic loading system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110332155A true CN110332155A (en) | 2019-10-15 |
| CN110332155B CN110332155B (en) | 2021-08-17 |
Family
ID=68146992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910657218.7A Active CN110332155B (en) | 2019-07-19 | 2019-07-19 | Hydraulic loading system |
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| CN (1) | CN110332155B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855467A (en) * | 2022-12-07 | 2023-03-28 | 浙江大学 | Single-plunger piston shoe assembly test bench with reciprocating type return stroke structure |
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| CN102155442A (en) * | 2011-03-18 | 2011-08-17 | 湖南工程学院 | Control loop of adjustable hydraulic loader |
| CN202367945U (en) * | 2011-12-20 | 2012-08-08 | 南平市南电通用机械有限公司 | Pressure welding hydraulic device for producing elastic metallic plastic pads |
| CN105697353A (en) * | 2016-01-21 | 2016-06-22 | 燕山大学 | Comprehensive testing device for fault simulation and state detection for hydraulic pump under variable working condition |
| CN206449033U (en) * | 2017-01-23 | 2017-08-29 | 柳工美卓建筑设备(常州)有限公司 | A kind of hydraulic drive mechanism of disintegrating machine |
| CN207513966U (en) * | 2017-11-16 | 2018-06-19 | 江苏真绩机械制造有限公司 | A kind of two-way hydraulic motor loading system |
| CN208040790U (en) * | 2018-02-13 | 2018-11-02 | 韶山市联信电器有限公司 | A kind of riveting machine integrated hydraulic system |
| CN208106855U (en) * | 2017-12-20 | 2018-11-16 | 黄石麦斯特机械设备有限公司 | A kind of hydraulic system of hydraulic bending press |
| CN109340218A (en) * | 2018-12-18 | 2019-02-15 | 中国铁建重工集团有限公司 | A kind of cooling control system and cutting apparatus of diaphram wall cutting apparatus |
-
2019
- 2019-07-19 CN CN201910657218.7A patent/CN110332155B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155442A (en) * | 2011-03-18 | 2011-08-17 | 湖南工程学院 | Control loop of adjustable hydraulic loader |
| CN202367945U (en) * | 2011-12-20 | 2012-08-08 | 南平市南电通用机械有限公司 | Pressure welding hydraulic device for producing elastic metallic plastic pads |
| CN105697353A (en) * | 2016-01-21 | 2016-06-22 | 燕山大学 | Comprehensive testing device for fault simulation and state detection for hydraulic pump under variable working condition |
| CN206449033U (en) * | 2017-01-23 | 2017-08-29 | 柳工美卓建筑设备(常州)有限公司 | A kind of hydraulic drive mechanism of disintegrating machine |
| CN207513966U (en) * | 2017-11-16 | 2018-06-19 | 江苏真绩机械制造有限公司 | A kind of two-way hydraulic motor loading system |
| CN208106855U (en) * | 2017-12-20 | 2018-11-16 | 黄石麦斯特机械设备有限公司 | A kind of hydraulic system of hydraulic bending press |
| CN208040790U (en) * | 2018-02-13 | 2018-11-02 | 韶山市联信电器有限公司 | A kind of riveting machine integrated hydraulic system |
| CN109340218A (en) * | 2018-12-18 | 2019-02-15 | 中国铁建重工集团有限公司 | A kind of cooling control system and cutting apparatus of diaphram wall cutting apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855467A (en) * | 2022-12-07 | 2023-03-28 | 浙江大学 | Single-plunger piston shoe assembly test bench with reciprocating type return stroke structure |
| CN115855467B (en) * | 2022-12-07 | 2023-08-29 | 浙江大学 | Single-plunger sliding shoe assembly test bench with reciprocating return structure |
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| Publication number | Publication date |
|---|---|
| CN110332155B (en) | 2021-08-17 |
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