CN102564500B - Method for estimating air consumption of compressed air system - Google Patents
Method for estimating air consumption of compressed air system Download PDFInfo
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- CN102564500B CN102564500B CN2011103523125A CN201110352312A CN102564500B CN 102564500 B CN102564500 B CN 102564500B CN 2011103523125 A CN2011103523125 A CN 2011103523125A CN 201110352312 A CN201110352312 A CN 201110352312A CN 102564500 B CN102564500 B CN 102564500B
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Abstract
The invention belongs to the field of energy conservation of pneumatic systems, and discloses a method for estimating air consumption of a compressed air system. The system comprises a compressor, an air storage tank and an air appliance. The method includes measuring change delta p1 of pressure in the air storage tank within time delta t1 after the system starts running stably; changing air yield of the compressor and setting variation as a set value delta Gin; then measuring change delta p2 of the pressure in the air storage tank within time delta t2; comparing change rate of the pressure in the air storage tank before and after the air yield of the compressor is changed; and estimating the volume of the integral system so that the air consumption of the system can be estimated according to the air yield Gin of the compressor before the air yield is changed and the set value delta Gin of the variation.
Description
Technical field
The invention belongs to energy-saving field of pneumatic, relate to a kind of evaluation method of compressed air system gas consumption.
Background technology
Generally in pressurized gas system, the total gas consumption of system slowly changes in time, for guaranteeing enough instantaneous gas consumptions, the total gas production of compressor has certain having more than needed when system constructing, when instantaneous gas consumption reaches peak value, gas production rate and gas consumption maintain an equal level, and this moment, system pressure was in minimumly, and the operational efficiency of compressor is high; But when the gas consumption of system diminished, the gas production rate of system was higher than gas consumption, and this moment, system pressure increased, and the operational efficiency of compressor reduces greatly, and whole system is operated under higher power consumption.
For making the energy saving of system operation, meeting under the prerequisite that remains on system minimum essential requirement pressure under the system works pressure condition, the gas production rate of compressor should maintain an equal level with the gas consumption in system as far as possible, just can make system pressure maintain a lower value, and the gas consumption of system is to change along with the variation of operating mode, gas consumption coupling for the gas production rate with compressor and system, at first to know the gas consumption of system, this shows, in can't testing the system of gas consumption, the gas consumption of estimating system is necessary with can't flowmeter being installed flowmeter is not installed.
Summary of the invention
Purpose of the present inventionBe: the evaluation method that gas consumption in a kind of pressurized gas system is provided.
Technical scheme of the present inventionBe:
When system run to reach stable after, this moment, total gas consumption of system was Gout, it is Gin that compressor a opens gas production rate, and differential is done on the Ideal-Gas Equation both sides, ignores temperature variation and obtains:
Wherein:
VThe volume of whole system:
R is the air constant, the T air themperature.
Then open valve 3, it is Δ Gin that compressor b opens gas production rate, and total gas consumption of supposing the system changes slowly, ignores its variation in Δ t2, obtains:
Volume disappears
V, obtain the gas consumption of system:
Advantage of the present inventionBe: in the compressed air system of flowmeter not being installed or flowmeter can't be installed, total gas consumption of estimating system.
Description of drawings
Fig. 1 is the inventive method typical case application schematic diagram.
Wherein: 1, compressor a, 2, compressor b, 3, valve, 4, pressure transducer.
Embodiment
Below the present invention is further illustrated.
Measuring process is as follows:
(a) Measuring Time △ at first
t 1The variation △ of pressure in interior gas-holder
p 1
(b) then open valve 3, change the gas production rate of compressor, variable quantity is setting value △
G in, Measuring Time △ then
t 2The variation △ of pressure in interior gas-holder
p 2.
Claims (1)
1. the evaluation method of a compressed air system gas consumption, it is characterized in that: when system run to reach stable after, this moment, total gas consumption of system was Gout, it is Gin that compressor a opens gas production rate, differential is done on the Ideal-Gas Equation both sides, is ignored temperature variation and obtain:
Wherein:
VThe volume of whole system:
R is the air constant, the T air themperature.
Then open valve 3, it is Δ Gin that compressor b opens gas production rate, and total gas consumption of supposing the system changes slowly, ignores its variation in Δ t2, obtains:
Volume disappears
V, obtain the gas consumption of system:
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103523125A CN102564500B (en) | 2011-11-09 | 2011-11-09 | Method for estimating air consumption of compressed air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103523125A CN102564500B (en) | 2011-11-09 | 2011-11-09 | Method for estimating air consumption of compressed air system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102564500A CN102564500A (en) | 2012-07-11 |
| CN102564500B true CN102564500B (en) | 2013-11-13 |
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| CN2011103523125A Active CN102564500B (en) | 2011-11-09 | 2011-11-09 | Method for estimating air consumption of compressed air system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278434B (en) * | 2013-05-20 | 2015-08-12 | 清华大学 | Measure the device and method of concentration of graphite dust in high temperature gas cooled reactor primary coolant circuit pipe |
| CN106150996B (en) * | 2016-08-30 | 2018-05-18 | 深圳市新环能科技有限公司 | The air compressor machine team control control method calculated based on demand gas consumption |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152122A (en) * | 1995-07-20 | 1997-06-18 | 丰田自动车株式会社 | Method of testing pressure relief |
| CN1592848A (en) * | 2001-11-27 | 2005-03-09 | 阿姆科技株式会社 | Pressure measuring method and device |
| CN1692221A (en) * | 2003-02-27 | 2005-11-02 | 新卡特彼勒三菱株式会社 | System for measuring quantity of liquid fuel and method for measuring quantity of liquid fuel |
| CN1934740A (en) * | 2004-03-16 | 2007-03-21 | 丰田自动车株式会社 | Fuel cell system and method for controlling same |
| CN101371122A (en) * | 2006-01-13 | 2009-02-18 | 株式会社科思莫计器 | Method for detecting fault in leakage inspector, leakage inspector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575770C (en) * | 2006-05-29 | 2009-12-30 | 新疆新捷燃气有限责任公司 | CNG directly fills aerating technology and CNG directly fills air entraining substation |
| CN101509599A (en) * | 2009-03-31 | 2009-08-19 | 沈军 | Secondary gas filling station |
-
2011
- 2011-11-09 CN CN2011103523125A patent/CN102564500B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152122A (en) * | 1995-07-20 | 1997-06-18 | 丰田自动车株式会社 | Method of testing pressure relief |
| CN1592848A (en) * | 2001-11-27 | 2005-03-09 | 阿姆科技株式会社 | Pressure measuring method and device |
| CN1692221A (en) * | 2003-02-27 | 2005-11-02 | 新卡特彼勒三菱株式会社 | System for measuring quantity of liquid fuel and method for measuring quantity of liquid fuel |
| CN1934740A (en) * | 2004-03-16 | 2007-03-21 | 丰田自动车株式会社 | Fuel cell system and method for controlling same |
| CN101371122A (en) * | 2006-01-13 | 2009-02-18 | 株式会社科思莫计器 | Method for detecting fault in leakage inspector, leakage inspector |
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| CN102564500A (en) | 2012-07-11 |
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Address after: 100191 room A506, computer building, No. 38, Xueyuan Road, Beijing, Haidian District, China Patentee after: Beijing Aisuo energy Polytron Technologies Inc Address before: 100191 room A506, computer building, No. 38, Xueyuan Road, Beijing, Haidian District, China Patentee before: Beijing ECOSO Technology Development Co., Ltd. |