CN208619399U - A kind of antisurge control system of compressor - Google Patents
A kind of antisurge control system of compressor Download PDFInfo
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- CN208619399U CN208619399U CN201820798483.8U CN201820798483U CN208619399U CN 208619399 U CN208619399 U CN 208619399U CN 201820798483 U CN201820798483 U CN 201820798483U CN 208619399 U CN208619399 U CN 208619399U
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Abstract
The utility model discloses provide a kind of antisurge control system of compressor; including centrifugal compressor, cooler, compressor analysis processor and ventilation pipe; compressor analysis processor is compared according to the numerical value of corrected flow and grade pressure ratio PR and compressor operation characteristic line; it analyses whether to reach surge critical point or blocks operating point; opening degree adjusting is carried out to coolant liquid regulating valve; operation stable to compressor provides protection; coolant rate is adjusted using coolant liquid regulating valve to safeguard compressor, use cost reduces；Analysis comparison is carried out by the parameters to system, guarantees that compressor stablizes safe operation between at different levels, guarantees that compressor operates in efficient region；Intercooler and aftercooler are in same housing of cooler body, are advantageously reduced the cost of heat exchanger, are reduced the weight and size of device.
Description
Technical field
The utility model relates to fuel cell technology more particularly to a kind of antisurge control systems of compressor.
Background technique
The periodic swinging of medium in fluid machinery and its pipeline is that the excitation that medium is periodically sucked and is discharged is made
With and the mechanical oscillation that occur, the low frequency that compressor surge refers to that air-flow occurs along compressor axis direction is (usually only several
Hertz or more than ten hertz), the air-flow oscillatory occurences of high amplitude (strong pressure and flowed fluctuation), this low frequency high amplitude
Air-flow oscillation is a kind of very big exciting force source, it will lead to intense mechanical vibration and the hot end overtemperature of compressor part, and
The badly damaged of component is caused in a short period of time, so compressor is not allowed to enter surge area work under any state
Make.
Fuel cell technology is a kind of energy conversion technique of high-efficiency cleaning, and reactant is water, and there are no pollution to the environment.
Its theoretical energy transformation efficiency is not limited by Carnot cycle, can be run under the thermal efficiency close to 100%, due to technology original
The limitation of cause and system other energy consumptions, total transfer efficiency is between 45%~60%.Wherein most important system energy consumption is
It is generated by air supply system, fuel cell at work, is sent to cell cathode participation after needing air supply system to compress air
Reaction.The energy consumption of usual air supply system accounts for 5%~20% of fuel battery power or so.
Volume currently, fuel cell technology is gradually applied on automobile, therefore to fuel cell power system and again
Amount requires very stringent.Also there is the strict demand of volume and weight to fuel cell air supply system.Traditional air supply system is main
It is formed including air intake filter, air compressor machine or oxidizer compressor, cooler.Surrounding air is inhaled into after crossing air filter
Air compressor, air compressor machine enter cooler for after gas compression.By after gas cooling to suitable temperature in cooler,
Into fuel cell pack.Wherein air compressor machine is energy consumption equipment.The air compressor machine of air supply system includes positive displacement compressor and speed at present
Degree formula compressor.Positive displacement compressor technology maturation, but since volume is big, quality weight, noise are big, cannot be entirely without in gas
The disadvantages of oily can be mainly gradually that centrifugal compressor replaces by speed mode compressor.
Honeywell Inc., the U.S. develops the two-stage centrifugal air compressor that high-speed motor directly drives.It is successfully employed in this
On the fuel cell-powered vehicle in field.Compared to positive displacement compressor, have small, light-weight, corresponding fast, low noise of size etc. excellent
Point.Due to not using cascade EDFA, so the power consumption of air compressor machine is bigger than normal.The maximum power dissipation of air compressor machine reaches 20kW, accounts for fuel
20% or so of battery power output power.If using traditional interstage cooler, and will increase machine weight and volume.This
Outside, the problem of surge existing for centrifugal air compressor.And in use, variation of ambient temperature can be from -45 DEG C on fuel-cell vehicle
Change to 45 DEG C.Air compressor machine surge problems are more exacerbated in this way.The purpose of this utility model is that proposing a kind of preventing for compressor
Surge control system prevents compressor from surge or blocking, the cost for reducing heat exchanger, the weight and ruler of reduction device occurs
Very little, conveying clean gas that can be stable.
Utility model content
The purpose of this hair utility model is that in order to overcome the shortcomings in the prior art, providing one kind prevents compressor from breathing heavily
Vibration or blocking, reduce heat exchanger cost, reduce device weight and size, can be stable conveying clean gas compression
The antisurge control system of machine.
To achieve the goals above, the utility model uses following technical scheme:
A kind of antisurge control system of compressor, including
Centrifugal compressor, cooler, compressor analysis processor and ventilation pipe, the centrifugal compressor include the
First-stage centrifugal compressor and second level centrifugal compressor, the cooler include intercooler and aftercooler, and described second
Grade centrifugal compressor inlet end is equipped with pipeline baroceptor, the second level centrifugal compressor between interstage temperature sensor and grade
Exhaust end is equipped with flow monitor and output channel pressure sensor, and the intercooler is equipped with coolant liquid regulating valve；
In the operating condition: the air pressure Pa and defeated that the compressor analysis processor detects pipeline baroceptor between grade
The air pressure Pb of pipe pressure sensor detection, which calculate, out acquires high stage compressor pressure ratio PR=Pb/Pa, compressor analysis
Processor is analyzed further according to the instantaneous flow Q and air compressor machine second level intake air temperature Ta of grade pressure ratio PR, flow monitor detection
Whether reach surge critical point, and the opening degree of coolant liquid regulating valve is adjusted.Adjust the inlet temperature of the second level, environment
Air or oxidant pass through first order centrifugal compressor and compress the gas to form high temperature and pressure, subsequently enter the intercooler of cooler
Part is cooled to the gas of cryogenic high pressure, and low temperature high pressure gas enters second level centrifugal compressor by gas pipeline, passes through
The gas that high temperature and pressure is formed after second level centrifugal compressor compresses is crossed, into the aftercooler part of cooler, finally by gas
Enter fuel cell pack after being cooled to suitable temperature.
Further, the compressor analysis processor is according to the numerical value of second level centrifugal compressor stage pressure ratio PR, instantaneous
Flow Q and second level inlet temperature Ta analyses whether to reach surge critical point or blocked state, to coolant liquid regulating valve into
Row opening degree is adjusted, and changes the intake air temperature Ta of the second level, so that compressor is far from surge or blocked state.Compressor is pacified
Steady operation provides protection, coolant rate is adjusted using coolant liquid regulating valve to safeguard compressor, use cost reduces.
The further intercooler outlet Temperature of Working T between 0-80 degrees Celsius, grade pressure ratio 1.0-4.0 it
Between, instantaneous flow Q flow is between 0.01-1.00kg/s.
Further, the compressor analysis processor is run according to the numerical value and corrected flow and compressor of grade pressure ratio PR
Characteristic curve compares, and analyses whether to reach surge critical point or blocking operating condition, carries out opening degree to coolant liquid regulating valve
Adjust: contrast properties curve, when grade pressure ratio stablize when, corrected flow be lower than surge critical point when, air compressor machine operating condition can at any time into
Enter surging condition, compressor analysis processor reduces coolant liquid regulating valve opening degree, while increasing second level intake air temperature Ta, directly
It is higher than to corrected flow in surge critical point；Contrast properties curve, when corrected flow is higher than blocking critical point, system is operated in
Inefficient blocked state, compressor analysis processor increase coolant liquid regulating valve opening degree, reduce high stage compressor import temperature
Degree, until corrected flow is lower than blocking critical point.
Further, the centrifugal compressor is directly driven by high-speed motor, and high-speed motor is in first order centrifugation pressure
Between contracting machine and two-stage centrifugal compressor.
Further, the cooler further includes cooler casing, and the intercooler and aftercooler are in same
In housing of cooler body.Intercooler and aftercooler are in same housing of cooler body, advantageously reduce heat exchanger cost,
Reduce the weight and size of device.
The beneficial effects of the utility model are: numerical value of the compressor analysis processor according to corrected flow and pressure ratio PR, point
Whether analysis reaches surge critical point or blocking operating point, carries out opening degree adjusting to coolant liquid regulating valve, stable to compressor
Operation provides protection, coolant rate is adjusted using coolant liquid regulating valve to safeguard compressor, use cost reduces；It is logical
It crosses and analysis comparison is carried out to the parameters of system, guarantee that compressor stablizes safe operation between at different levels, compressor is allowed to operate in
High efficiency range；Intercooler and aftercooler are in same housing of cooler body, are advantageously reduced the cost of heat exchanger, are reduced
The weight and size of device.
Detailed description of the invention
Fig. 1 is the air supply system schematic diagram of the utility model；
Fig. 2 is the utility model compressor analysis processor process flow diagram；
Fig. 3 is the compressor performance curve of the utility model；
In figure: first order centrifugal compressor 11, second level centrifugal compressor 12, it is cooler 2, intercooler 21, rear cold
But pipeline baroceptor 5, flow monitor 6, output between device 22, compressor analysis processor 3, interstage temperature sensor 4, grade
Pipe pressure sensor 7, coolant liquid regulating valve 8.
Specific embodiment
The utility model is described in further detail below with reference to embodiment, following embodiment is to the utility model
Explanation and the utility model is not limited to following embodiment.
As shown in Figure 1 to Figure 3, a kind of antisurge control system of compressor, including
Centrifugal compressor, cooler 2, compressor analysis processor 3 and ventilation pipe, the centrifugal compressor include
First order centrifugal compressor 11 and second level centrifugal compressor 12, the cooler include intercooler 21 and aftercooler
22, the second level centrifugal compressor inlet end is equipped with pipeline baroceptor 5 between interstage temperature sensor 4 and grade, and described the
The exhaust end of two-stage centrifugal compressor is equipped with flow monitor 6 and output channel pressure sensor 7, sets on the intercooler
There is coolant liquid regulating valve 8；
In the operating condition: the air pressure Pa and defeated that the compressor analysis processor detects pipeline baroceptor between grade
The air pressure Pb of pipe pressure sensor detection, which calculate, out acquires a grade pressure ratio PR=Pb/Pa, compressor analysis processor according to
The temperature Ta of pipeline baroceptor detects between grade air pressure Pa, the detection of interstage temperature sensor and the stream of flow monitor detection
Amount Q calculates corrected flow, Compressor analysis processor is further according to grade pressure ratio
PR and corrected flow are compared with compressor operation characteristic line, analyse whether to reach surge critical point or blocking operating condition, and
The opening degree of coolant liquid regulating valve is adjusted, the intercooler outlet Temperature of Working T is between 0-80 degrees Celsius, grade
Pressure ratio between 1.0-4.0, instantaneous flow Q flow between 0.01-1.00kg/s, the compressor analysis processor according to
The numerical value of grade pressure ratio PR is compared with corrected flow and compressor performance curve, analyse whether to reach surge critical point or
Person blocks operating condition, carries out opening degree adjusting: contrast properties curve to coolant liquid regulating valve, when grade pressure ratio is stablized, corrected flow
When lower than surge critical point, air compressor machine operating condition can enter surging condition at any time, and compressor analysis processor reduces coolant liquid and adjusts
Valve opening degree, while increasing second level intake air temperature Ta, until corrected flow is higher than in surge critical point；Contrast properties curve,
When corrected flow is higher than blocking critical point, system operates in inefficient blocked state, the increase cooling of compressor analysis processor
Liquid regulating valve opening degree reduces high stage compressor inlet temperature, until corrected flow is lower than blocking critical point, the centrifugation
Compressor is directly driven by high-speed motor, and high-speed motor is between first order centrifugal compressor and two-stage centrifugal compressor, institute
Stating cooler further includes cooler casing, and the intercooler and aftercooler are in same housing of cooler body.
In the present embodiment, compressor analysis processor according to the comparison of PR and corrected flow and compressor operation characteristic line,
It analyses whether to reach surge critical point or blocks operating status, opening degree adjusting is carried out to coolant liquid regulating valve, to compressor
Stable operation provides protection, coolant rate is adjusted using coolant liquid regulating valve to safeguard compressor, use cost drop
It is low；Analysis comparison is carried out by the parameters to system, guarantees that compressor stablizes safe operation between at different levels, guarantees compressor
Operate in efficient region；Intercooler and aftercooler are in same housing of cooler body, advantageously reduce heat exchanger at
Originally, the weight and size of device are reduced.
Those skilled in the art will readily occur to the disclosure after considering specification and practicing utility model disclosed herein
Other embodiments.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes
Or adaptive change follow the general principles of this disclosure and including the disclosure it is undocumented in the art known in often
Knowledge or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by right
It is required that pointing out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the attached claims.
Claims (5)
1. a kind of antisurge control system of compressor, which is characterized in that including centrifugal compressor, cooler (2), compressor
Analysis processor (3) and ventilation pipe, the centrifugal compressor include first order centrifugal compressor (11) and second level centrifugation
Compressor (12), the cooler include intercooler (21) and aftercooler (22), the second level centrifugal compressor into
Gas end is equipped with pipeline baroceptor (5), the exhaust end of the second level centrifugal compressor between interstage temperature sensor (4) and grade
Equipped with flow monitor (6) and output channel pressure sensor (7), the intercooler is equipped with coolant liquid regulating valve (8)；
In the operating condition: the air pressure Pa and efferent duct that the compressor analysis processor detects pipeline baroceptor between grade
The air pressure Pb of road pressure sensor detection, which calculate, acquires a grade pressure ratio PR=Pb/Pa, and compressor analysis processor is according between grade
The flow Q of the air pressure Pa of pipeline baroceptor detection, the temperature Ta of interstage temperature sensor detection and flow monitor detection
Corrected flow is calculated, Compressor analysis processor is further according to grade pressure ratio PR
It is compared with corrected flow and compressor operation characteristic line, analyses whether to reach surge critical point or blocking operating condition, and right
The opening degree of coolant liquid regulating valve is adjusted.
2. a kind of antisurge control system of compressor according to claim 1, which is characterized in that the intercooler
Temperature of Working T is exported between 0-80 degrees Celsius, grade pressure ratio is between 1.0-4.0, and instantaneous flow Q flow is between 0.01-
Between 1.00kg/s.
3. a kind of antisurge control system of compressor according to claim 2, which is characterized in that the compressor analysis
Processor is compared according to the numerical value of grade pressure ratio PR with corrected flow and compressor performance curve, analyses whether to reach asthma
Vibration critical point or blocking operating condition, carry out opening degree adjusting: contrast properties curve to coolant liquid regulating valve, when grade pressure ratio is stablized
When, when corrected flow is lower than surge critical point, air compressor machine operating condition can enter surging condition at any time, and compressor analysis processor reduces
Coolant liquid regulating valve opening degree, while increasing second level intake air temperature Ta, until corrected flow is higher than surge critical point；It is comparative
Energy curve, when corrected flow is higher than blocking critical point, system operates in inefficient blocked state, and compressor analysis processor increases
Big coolant liquid regulating valve opening degree, reduces second level centrifugal compressor inlet temperature, until corrected flow is lower than blocking critical point.
4. a kind of antisurge control system of compressor according to claim 1 or 2 or 3, which is characterized in that it is described from
Heart compressor is directly driven by high-speed motor, high-speed motor be in first order centrifugal compressor and second level centrifugal compressor it
Between.
5. a kind of antisurge control system of compressor according to claim 1, which is characterized in that the cooler also wraps
Cooler casing is included, the intercooler and aftercooler are in same housing of cooler body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820798483.8U CN208619399U (en) | 2018-05-25 | 2018-05-25 | A kind of antisurge control system of compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820798483.8U CN208619399U (en) | 2018-05-25 | 2018-05-25 | A kind of antisurge control system of compressor |
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| Publication Number | Publication Date |
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| CN208619399U true CN208619399U (en) | 2019-03-19 |
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| CN201820798483.8U Active CN208619399U (en) | 2018-05-25 | 2018-05-25 | A kind of antisurge control system of compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529422A (en) * | 2018-05-25 | 2019-12-03 | 势加透博（北京）科技有限公司 | A kind of antisurge control system of compressor |
| CN111980952A (en) * | 2020-08-13 | 2020-11-24 | 北京智拓博科技有限公司 | Method, device and system for controlling running boundary of rotary fluid machine |
-
2018
- 2018-05-25 CN CN201820798483.8U patent/CN208619399U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529422A (en) * | 2018-05-25 | 2019-12-03 | 势加透博（北京）科技有限公司 | A kind of antisurge control system of compressor |
| CN110529422B (en) * | 2018-05-25 | 2024-04-09 | 势加透博（北京）科技有限公司 | Anti-surge control system of compressor |
| CN111980952A (en) * | 2020-08-13 | 2020-11-24 | 北京智拓博科技有限公司 | Method, device and system for controlling running boundary of rotary fluid machine |
| CN111980952B (en) * | 2020-08-13 | 2022-04-12 | 北京智拓博科技有限公司 | Method, device and system for controlling running boundary of rotary fluid machine |
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