CN109630383A - A kind of vacuum pump simulated loading system - Google Patents
A kind of vacuum pump simulated loading system Download PDFInfo
- Publication number
- CN109630383A CN109630383A CN201811506526.1A CN201811506526A CN109630383A CN 109630383 A CN109630383 A CN 109630383A CN 201811506526 A CN201811506526 A CN 201811506526A CN 109630383 A CN109630383 A CN 109630383A
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- China
- Prior art keywords
- vacuum
- chamber body
- air pump
- tonifying
- pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
A kind of vacuum pump simulated loading system comprising: observing and controlling end, tonifying Qi air pump and pressure regulation air pump；It is disposed with pressure balance module at observing and controlling end, is disposed with left chamber body, right chamber body and diaphragm positioned there between in pressure balance module, and diaphragm deforms offset according to the vacuum degree difference between left chamber body and right chamber body in respective cavities；Tonifying Qi air pump provides make-up gas from extraneous phase vacuum tank, pressure regulation air pump is connected with left chamber body gas, and the gas of left chamber body is provided or extracted according to the intracorporal vacuum degree of left chamber, right chamber body is connected with vacuum tank gas, it realizes the negative feedback control to vacuum degree in vacuum tank, realizes continuous, stable tonifying Qi and pressure regulation.
Description
Technical field
The present invention is about a kind of vacuum pump simulated loading system.
Background technique
The front end of conventional engine can include several power accessories: generator, compressor of air conditioner, vacuum pump etc..It is each dynamic
Power attachment plays the role of oneself on vehicle, such as: generator is driven by engine crankshaft realizes that high speed rotation generates electricity, and issues
Electric energy supply all kinds of electrical appliances of vehicle (such as: car light, middle control display screen, ECU).
In these power accessories, vacuum pump is also a more important attachment, (is generally sent out by engine driving
Motivation camshaft directly drives) high speed rotation generates the effect vacuumized, certain vacuum is provided for vehicle power-assisted etc. of braking
Degree, i.e., vacuum pump wants run with load on vehicle, i.e., certain vacuum degree is generated by consumption of engine Partial Power.
And during the verification experimental verification of engine complete machine, because not being attached to vehicle brake system, result in vacuum pump can not be with load
Operation, it is common practice to make vacuum pump free-runing operation.Such operating status is not inconsistent with vehicle virtual condition, so that engine
The verifying and physical presence deviation of complete machine, verification the verifying results simultaneously do not meet reality.
The present invention relates to engine test development fields, in particular for the examination of motor front-end wheel system, either
For the field of engine maximum machine load examination.It is whole by indirectly simulating as a kind of vacuum pump simulated loading system
Vehicle brake system, the generation vacuum degree for enabling vacuum pump controlled in engine overall test.
Summary of the invention
The object of the present invention is to provide a kind of simulation system, the simulation loading to vacuum pump can be realized, and can be continuous
Load, loading accuracy is higher.
To realize the above-mentioned technical purpose, the present invention provides a kind of vacuum pump simulated loading system comprising: vacuum tank and its
On pumping end, the pumping end is connected with vacuum pump, in which: its further include: observing and controlling end, tonifying Qi air pump and pressure regulation air pump；Institute
It states and is disposed with pressure balance module at observing and controlling end, left chamber body, right chamber body are disposed in the pressure balance module and positioned at two
Diaphragm between person, and the diaphragm according to the vacuum degree difference between the left chamber body and the right chamber body in respective cavities
Deform offset；The tonifying Qi air pump provides make-up gas, the pressure regulation air pump and the left side from vacuum tank described in extraneous phase
Cavity gas is connected, and provides or extract the gas of the left chamber body, the right chamber body according to the intracorporal vacuum degree of the left chamber
It is connected with the vacuum tank gas.
Pair that the present invention passes through vacuum degree equilibrium and transformation and tonifying Qi air pump and pressure regulation air pump in pressure balance module
To adjusting, the negative feedback control to vacuum degree in vacuum tank is realized, realize continuous, stable tonifying Qi and pressure regulation.
As a further improvement, there also is provided main vacuum sensor in the middle part of the vacuum tank；Cloth in the left chamber body
It is equipped with observing and controlling end vacuum sensor；And the main vacuum sensor and observing and controlling end vacuum sensor are and positioned at outer
The control unit phase signals in portion control connection.
As a further improvement, when the diaphragm deforms in respective cavities and deviates, it will in the interdependent cavity
It generates voltage signal and is transmitted to described control unit.
As a further improvement, the pressure regulation air pump is connected through pressure regulation pipeline with the left chamber body gas, the tonifying Qi gas
Pump is connected through tonifying Qi pipeline with the vacuum tank gas.
As a further improvement, the entrance of the pressure regulation air pump is equipped with pressure regulation air filter, the entrance peace of the tonifying Qi air pump
Equipped with tonifying Qi air filter.
As a further improvement, the pressure regulation air pump and the tonifying Qi air pump are that high-precision gas pumps and with the control
The control connection of unit phase signals.
The present invention can have the closed-loop control of PID control and feedback regulation, and control precision is higher.
Detailed description of the invention
Fig. 1 is appearance diagram of the present invention；
Fig. 2 is diagrammatic cross-section of the present invention.
Appended drawing reference: 1 pressure balance module, 11 right chamber bodies, 12 left chamber bodies, 13 diaphragms, 15 observing and controlling ends, 2 observing and controlling ends sensing
Device, 3 pressure regulation pipelines, 4 pressure regulation air pumps, 5 main vacuum sensors, 6 tonifying Qi pipelines, 7 tonifying Qi air pumps, 8 pumping ends, 9 vacuum tanks, 10
Pressure regulation air filter, 14 tonifying Qi air filters.
Specific embodiment
As illustrated in fig. 1 and 2, the present invention provides a kind of vacuum pump simulated loading system comprising: vacuum tank 9 and thereon
It is evacuated end 8, the pumping end 8 is connected with vacuum pump, in which: its further include: observing and controlling end 15, tonifying Qi air pump 7 and pressure regulation air pump 4；
It is disposed with pressure balance module 1 at the observing and controlling end 15, left chamber body 12, right chamber body 11 are disposed in the pressure balance module 1
And diaphragm 13 positioned there between, and the diaphragm 13 is according to the vacuum between the left chamber body 12 and the right chamber body 11
Degree difference deforms offset in respective cavities；The tonifying Qi air pump 7 provides make-up gas from vacuum tank 9 described in extraneous phase,
The pressure regulation air pump 4 is connected with 12 gas of left chamber body, and provides or extract institute according to the vacuum degree in the left chamber body 12
The gas of left chamber body 12 is stated, the right chamber body 11 is connected with 9 gas of vacuum tank.
The present invention passes through the vacuum degree equilibrium and transformation and tonifying Qi air pump 7 and pressure regulation air pump 4 in pressure balance module 1
Bidirectional modulation, realize to the negative feedback control of vacuum degree in vacuum tank 9, realize continuous, stable tonifying Qi and pressure regulation.
As a further improvement, the middle part of the vacuum tank 9 there also is provided main vacuum sensor 5；The left chamber body 12
Inside it is disposed with observing and controlling end vacuum sensor 2；And the main vacuum sensor 5 and observing and controlling end vacuum sensor 2 are equal
Connection is controlled with external control unit phase signals are located at.
As a further improvement, when the diaphragm 13 deforms in respective cavities and deviates, in the interdependent cavity
Voltage signal will be generated and be transmitted to described control unit.
As a further improvement, the pressure regulation air pump 4 is connected through pressure regulation pipeline 3 with 12 gas of left chamber body, the benefit
Gas air pump 7 is connected through tonifying Qi pipeline 6 with 9 gas of vacuum tank.
As a further improvement, the entrance of the pressure regulation air pump 4 is equipped with pressure regulation air filter 10, the tonifying Qi air pump 7 enters
Mouth is equipped with tonifying Qi air filter 14.
As a further improvement, the pressure regulation air pump 4 and the tonifying Qi air pump 7 are that high-precision gas pumps and with the control
Unit phase signals control connection processed.
The present invention can be realized the simulation loading to vacuum pump, and can continuously load, and loading accuracy is higher；It can make
It obtains vacuum pump stabilization to be loaded in setting vacuum degree A numerical value, control characteristic is more preferable；The present invention passes through the control of high-precision air feed pump
System is adjusted, and can be realized quick, the sensitive gas content (i.e. vacuum degree) adjusted in vacuum tank；Can have PID control and
The closed-loop control of feedback regulation, control precision are higher.
In the preferred embodiment of the present invention, vacuum pump exhaust pipe is connected with pumping end 8, i.e. meeting when vacuum pump runs at high speed
Gas inside vacuum tank 9 is gradually drawn in ambient atmosphere, i.e., gradually increases the vacuum degree inside vacuum tank 9, vacuum
Vacuum degree inside tank 9 can be measured by main vacuum sensor 5, and be input in external control unit.
It is disposed with a set of tonifying Qi air pump 7 on vacuum tank 9, the two is connected by tonifying Qi pipeline 6, and tonifying Qi air pump 7 can will be outer
Boundary's gas is input in 9 cavity of vacuum tank, it can gas in lasting supplement vacuum tank 9, filling into gas can maintain or subtract
Vacuum degree B in small vacuum tank 9, the vacuum degree B in vacuum tank 9 act on diaphragm 13.And ambient atmosphere is entering tonifying Qi air pump 7
Before can pass through tonifying Qi air filter 14, ambient atmos are dried, filter remove impurity.Tonifying Qi air pump 7 is high-precision gas simultaneously
Body pump, can be accurately controlled air compensation.
It is disposed with a set of pressure balance module 1 in 9 left end of vacuum tank, mainly includes right chamber body 11, left chamber body 12 and film
Piece 13.The description that the left and right cavity is carried out for relatively attached Fig. 1 and 2, it will be appreciated by persons skilled in the art that the right side
Cavity 11 is the cavity being connected with vacuum tank 9, and the left chamber body 12 is the cavity being connected with pressure regulation air pump 4.Vacuum tank 9 is left
The pressure balance module 1 at end is connected by pressure regulation pipeline 3 with pressure regulation air pump 4, and one side pressure regulation air pump 4 can will be in left chamber body 12
Gas be evacuated in ambient atmosphere, certain vacuum degree A is formed in left chamber body 12, vacuum degree A acts on diaphragm 13, this is true
Reciprocal of duty cycle can be measured by observing and controlling end sensor 2 and be input to control unit；Ambient atmos can also be pumped by another aspect pressure regulation air pump 4
In left chamber body 12, reduce the vacuum degree in left chamber body 12 at this time, that is, realize the accurate control of vacuum degree in left chamber body 12 with
Input, can independently set vacuum degree A in left chamber body 12 according to demand.And ambient atmosphere can be by sky before entering pressure regulation air pump 4
Filter 10 is dried ambient atmos, filters removal impurity.Pressure regulation air pump 4 is high-precision gas pump simultaneously, can be accurate
Control air compensation and sucking rate.
As known from the above, diaphragm 13 (is connected to) vacuum by vacuum degree in left chamber body 12 and right chamber body 11 simultaneously with vacuum tank 9
B effect is spent, when vacuum degree A is greater than 11 vacuum degree B of right chamber body in left chamber body 12, diaphragm 13 is moved to the left and contacts left side pipe
Wall, control unit can receive the voltage signal that transmits of left side tube wall at this time, and control unit is according to the size of the voltage signal
Judge two sides vacuum pump size of the difference；Likewise, when vacuum degree A is less than 11 vacuum degree B of right chamber body in left chamber body 12, diaphragm 13
It moves right and contacts right side tube wall, control unit can receive the voltage signal that a right side tube wall transmits, control unit at this time
Two sides vacuum pump size and difference are judged according to the size of the voltage signal.Control unit passes through for two sides vacuum degree A and B
The control model of PID controls to adjust tonifying Qi air pump 7, can make in this way true in vacuum tank 9 (being equal to right chamber body 11)
Reciprocal of duty cycle B is accurately intended to 12 vacuum degree A of left chamber body, and when target value vacuum degree B is equal to setting value vacuum degree A, diaphragm 13 will not
Voltage value is generated to two sides, control unit stops adjusting and maintaining 7 steady running of tonifying Qi air pump at this time, continues tonifying Qi and makes vacuum
Pump it is lasting setting vacuum degree A carry out pumping acting.It is stable accurate in setting vacuum degree A numerical value progress to realize vacuum pump
Load, and be continuous load.
When the not make-up gas into vacuum tank 9 of tonifying Qi air pump 7, vacuum pump continuous running can realize that vacuum pump can reach
The maximum vacuum arrived.It is intermittent that vacuum pump can be realized when the intermittent tonifying Qi gas into vacuum tank 9 of tonifying Qi air pump 7
Acting.
The present invention can be realized the simulation loading to vacuum pump, and continuous load may be implemented, maximum load, intermittent add
Isotypes, the loading accuracies such as load are higher；So that engine in verification experimental verification, can be such that vacuum pump band carries close to whole vehicle state
Operation；The present invention enables to vacuum pump stabilization to load in setting vacuum degree A numerical value, and control characteristic is more preferable；The present invention is logical
The control and regulation for crossing high-precision air feed pump can be realized quick, the sensitive gas content (i.e. vacuum degree) adjusted in vacuum tank；
The present invention can have the closed-loop control of PID control and feedback regulation, and control precision is higher.
The corresponding arragement construction of the present invention is simple, and it is convenient to operate, preferable to the versatility of all kinds of vacuum pumps, avoids application
The trouble of vehicle brake auxiliary；Inventive principle, control and feedback procedure have novelty, include high-precision air pump, diaphragm pressure
Balance module, PID control mode, pressure regulation and the scheme thinking of tonifying Qi, the selection of a variety of loading modes etc.；The present invention passes through master control
Unit controls to adjust, and the convenient installation of each module, function-specific and reliable, later period can extend to wireless integration Management etc.,
Intelligence and versatility are stronger.Later period of the invention, which can expand, to be applied in the vacuum degree control in other fields, as vacuum valve gates
System etc..
It should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, it should be understood that non-limiting embodiment party
Case is illustrated as just example.The protection scope of the desired essence of the application is more embodied in independent claims offer
Range and its dependent claims.
Claims (6)
1. a kind of vacuum pump simulated loading system comprising: vacuum tank (9) and pumping end (8) thereon, the pumping end (8)
It is connected with vacuum pump, it is characterised in that:
Its further include: observing and controlling end (15), tonifying Qi air pump (7) and pressure regulation air pump (4)；
It is disposed with pressure balance module (1) at the observing and controlling end (15), is disposed with left chamber body in the pressure balance module (1)
(12), right chamber body (11) and diaphragm positioned there between (13), and the diaphragm (13) according to the left chamber body (12) and
Vacuum degree difference between the right chamber body (11) deforms offset in respective cavities；
The tonifying Qi air pump (7) provides make-up gas, the pressure regulation air pump (4) and the left side from vacuum tank (9) described in extraneous phase
Cavity (12) gas is connected, and provides or extract the gas of the left chamber body (12) according to the vacuum degree in the left chamber body (12)
Body, the right chamber body (11) are connected with the vacuum tank (9) gas.
2. a kind of vacuum pump simulated loading system as described in claim 1, it is characterised in that: the middle part of the vacuum tank (9)
It there also is provided main vacuum sensor (5)；Observing and controlling end vacuum sensor (2) is disposed in the left chamber body (12)；And it is described
Main vacuum sensor (5) and observing and controlling end vacuum sensor (2) are controlled with the control unit phase signals for being located at outside
Connection.
3. a kind of vacuum pump simulated loading system as claimed in claim 2, it is characterised in that: when the diaphragm (13) is corresponding
It is deformed when deviating in cavity, voltage signal will be generated in the interdependent cavity and is transmitted to described control unit.
4. a kind of vacuum pump simulated loading system as claimed in claim 3, it is characterised in that: the pressure regulation air pump (4) is through adjusting
Pressure pipe road (3) is connected with left chamber body (12) gas, and the tonifying Qi air pump (7) is through tonifying Qi pipeline (6) and the vacuum tank (9)
Gas is connected.
5. a kind of vacuum pump simulated loading system as claimed in claim 4, it is characterised in that: pressure regulation air pump (4) enter
Mouth is equipped with pressure regulation air filter (10), and the entrance of the tonifying Qi air pump (7) is equipped with tonifying Qi air filter (14).
6. a kind of vacuum pump simulated loading system as claimed in claim 5, it is characterised in that: the pressure regulation air pump (4) and institute
Tonifying Qi air pump (7) is stated to be high-precision gas pump and control connection with described control unit phase signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506526.1A CN109630383B (en) | 2018-12-10 | 2018-12-10 | Vacuum pump simulation loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506526.1A CN109630383B (en) | 2018-12-10 | 2018-12-10 | Vacuum pump simulation loading system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630383A true CN109630383A (en) | 2019-04-16 |
| CN109630383B CN109630383B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811506526.1A Active CN109630383B (en) | 2018-12-10 | 2018-12-10 | Vacuum pump simulation loading system |
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| Country | Link |
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| CN (1) | CN109630383B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370386A (en) * | 2020-10-15 | 2022-04-19 | 海信（山东）冰箱有限公司 | Refrigerator vacuumizing control method and refrigerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203580929U (en) * | 2013-12-05 | 2014-05-07 | 王水争 | Vacuum supply system for motor vehicle unpowered state brake device |
| CN104057942A (en) * | 2014-05-27 | 2014-09-24 | 王水争 | Vacuum supply system for motor vehicle brake devices |
| US20160356273A1 (en) * | 2015-06-05 | 2016-12-08 | Agilent Technologies, Inc. | Vacuum pump system with light gas pumping and leak detection apparatus comprising the same |
| CN206723000U (en) * | 2017-05-09 | 2017-12-08 | 天津沃昌机械设备有限公司 | Vacuum Pumps Station |
-
2018
- 2018-12-10 CN CN201811506526.1A patent/CN109630383B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203580929U (en) * | 2013-12-05 | 2014-05-07 | 王水争 | Vacuum supply system for motor vehicle unpowered state brake device |
| CN104057942A (en) * | 2014-05-27 | 2014-09-24 | 王水争 | Vacuum supply system for motor vehicle brake devices |
| US20160356273A1 (en) * | 2015-06-05 | 2016-12-08 | Agilent Technologies, Inc. | Vacuum pump system with light gas pumping and leak detection apparatus comprising the same |
| CN206723000U (en) * | 2017-05-09 | 2017-12-08 | 天津沃昌机械设备有限公司 | Vacuum Pumps Station |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370386A (en) * | 2020-10-15 | 2022-04-19 | 海信（山东）冰箱有限公司 | Refrigerator vacuumizing control method and refrigerator |
| CN114370386B (en) * | 2020-10-15 | 2024-05-03 | 海信冰箱有限公司 | Refrigerator vacuumizing control method and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109630383B (en) | 2020-12-01 |
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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